JPH0694294B2 - Method of collecting panel products - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for accumulating panel-shaped products, and more particularly to a method for accumulating panel-shaped products so that the panel-shaped products are moved toward an inclined surface provided on a pallet. Regarding

b. Conventional Technology Conventionally, the product 1 bent into a box shape or a lid shape by an appropriate bending machine may be simply laminated and accumulated as shown in FIG. Further, the panel-shaped product 9 (synonymous with the above-mentioned product 1) may be accumulated such that the positions of the corners thereof are displaced from each other, as shown in FIG.

Further, as shown in FIG. 4, a plurality of support members 5 each having a protection member 7 on the top thereof are erected on the carriage 3 at appropriate intervals and inclined so that the product 1 is placed between the support members 5. It is a configuration to be arranged.

c. Problems to be Solved by the Invention When the products 1 and 9 are stacked and stacked as shown in FIGS. 2 and 3, there is a problem that scratches are likely to occur during stacking. Further, in the case of stacking as shown in FIG. 4, there is a problem that many spaces exist between products, and it is not possible to densely stack products.

d. Means for Solving the Problems The present invention has been made in view of the conventional problems as described above, and has an approaching slope for approaching the panel-shaped product to one end of a pallet that supports the panel-shaped product. A pallet is provided on a trolley or a base which is relatively movable toward and away from the other end of the pallet, and a tilting support frame is provided so that one end side of the pallet is lowered, and a frame body is provided on the one end side of the support frame. One end side of the pallet is tiltably supported, and one end side of the panel-shaped product on the frame is supported so as to be capable of abuttingly supported so as to be movable in the tilt direction of the frame. After stacking the panel-shaped products on the frame body by stacking the panel-shaped products on the slope, the supporting frame and the frame body are mounted on the frame, and the folding rising part of the panel-shaped product is a carriage or a base. Is not detected by the rotation limit sensor attached to the (A) step in which the lower end side of the panel-shaped product is supported by a stopper and the lower end side is supported by a stopper; and a panel shape that approaches the inclined surface of the extended surface of the inclined surface of the pallet and the upper surface of the pallet in advance. The pallet is relatively close to the trolley or the base so that the intersection of the extended surface of the inclined upper surface of the product and the upper surface of the pallet and the extended surface of the inclined upper surface of the panel-shaped product on the frame are substantially aligned with each other (b ) Step; the stopper is lowered along the inclination of the frame to support the lower end side of the panel-shaped product against the upper surface of the pallet (c) step; and the other end side of the frame is separated from the support frame. A panel-shaped product accumulating method comprising the step (d) of further inclining the frame body and inclining the panel-shaped products toward the inclined surface side of the pallet to accumulate them.

e. Operation With the above configuration, in the present invention, when the panel-shaped product is placed on the frame, the supporting frame and the frame are such that the bending rising portion of the panel-shaped product serves as the rotation limit detection sensor. The lower end side of the panel-shaped product is supported by a stopper provided in the frame body, which is integrally inclined to an angle at which it cannot be detected.

Then, for example, the pallet is relatively moved so that the intersection of the extended surface of the inclined surface of the pallet and the upper surface of the pallet substantially coincides with the extended surface of the inclined upper surface of the panel-shaped product on the frame.

Then, the stopper is lowered along the inclination of the frame body so that the lower end side of the panel-shaped product is brought into contact with and supported by the upper surface of the pallet. Then, the other end side of the frame is largely tilted away from the support frame, and the panel-shaped product is pushed toward the inclined surface side of the pallet by the frame body, and the panel-shaped product is tilted toward the inclined surface side of the pallet to be collected. It will be.

That is, when the panel-shaped product is tilted to the inclined surface side of the pallet, the position where the extension surface of the inclined surface intersects the pallet upper surface and the extension surface of the inclined upper surface of the panel-shaped product on the frame are pre-matched. , When the panel-shaped product is tilted toward the inclined surface side of the pallet, the inclined surface and the inclined lower surface of the panel-shaped product (the inclined upper surface when supported on the frame, but after being accumulated on the pallet, , And the inclined direction on the frame is opposite to the inclined direction, so that the inclined lower surface is in contact.

Therefore, when stacking the panel-like products against each other, it is possible to prevent the occurrence of scratches without slipping between the products and to stack the products in close contact with each other. It is possible to collect products so that they can be approached.

f. Example The product stacking device 15 shown in FIG. 1 is an example provided orthogonal to the end of the carry-out conveyor 17 from the plate material bending machine (not shown). A trolley 19 on which the tilting base 13 is rotatably mounted can be moved and positioned on the rails 21, 21 in the left-right direction in FIG. 1 by, for example, an electric motor (not shown).

On the left side of the tilting base 13 in FIG. 1, two rows of traverse conveyors 23, 23 arranged in series and the conveyor bases 25, 27 shown in FIGS. 8 and 10 are connected in series in two rows. There are provided two conveyors 29, 29 for transferring the pallets 11 in mutually opposite directions (indicated by arrows in FIG. 1).

As can be seen in Figures 7,8,9,10, the two-chain conveyor 2
9,29 are the electric motors 3 at the conveyor stands 25, 25, 27, 27.
1 is driven at the same speed, and the tension of the traverse conveyor can be adjusted individually by tension sprockets 33 at the side ends.

Although the above-mentioned conveyor stands 25 and 27 have almost the same structure, for example, the upper conveyor stand 25 in FIG. 1 carries in empty pallets 11 from the upper left one by one using a forklift or the like. Therefore, there are no guide rails 35 on the left and right in this direction (see FIGS. 7, 8, 9, and 10), and instead a positioning guard rail 37 and, if necessary, a stopper roller 39 are provided.

The lower left conveyor table 25 in FIG. 1 is the upper left conveyor table 25.
Since the pallet 11 in which the panel-shaped products 9 are closely packed in the symmetrical direction is removed, there is a portion without the guide rail 35.
(Not shown) The pallet 11 used in the product stacking device 15 of the present invention is the fifth and sixth pallets.
As illustrated in the figure, a product approaching slope 41 is provided at one end.

This inclined slope 41 is preferably made of a stainless steel plate or the like in which the square pipe 43 and the like are R-bent to 72 degrees and the left and right sides and the upper side are bent, and the pedestal part is a bar-shaped part 45 of sufficient height. Has become.

The fork of the forklift is designed so that it can be inserted from the side, and the bottom is covered with a plate to prevent the fork from catching.

A non-slip rubber sheet 47 is attached to the upper surface of the bar-shaped portion 45 to prevent the panel-shaped product 9 from slipping, and the panel-shaped product 9 is attached to the side bars 49 at both ends of the end without the slanting slope 41.
If necessary, attach the slip-off prevention plate 51 with the thumbscrew 53.

As shown in FIG. 11, the sloping base 13 described above has a carriage 19
A support frame 59 supported by a rotary shaft 57 provided above the front leg 55 of the
Is rotatable by the expansion and contraction action of the piston rod 63 of the fluid pressure cylinder 61.

Further, the roller frame 71 is rotatable by being driven by the fluid pressure cylinder 69 around a shaft 67 provided near the front end of a bracket plate 65 provided with support frames 59 on both sides of the front end.

As shown on the left side of FIG. 11, the roller frame 71 is placed under fluid pressure so that the product 9 tilts forward by more than 90 degrees before the product 9 is finally approached and closely packed on the slope 41. Cylinder 69
It is a function of tilting forward.

Guide rails 73 for guiding the left and right sides of the panel-shaped product 9 are provided on both left and right sides of the roller frame body 71.

Further, as shown in FIGS. 13 and 14, a stopper that allows the fluid pressure cylinder 75 to select two positions for raising and lowering is provided on the lower surface of the roller frame 71.
77 are provided in a cantilever comb-like shape (five in this example) and are inserted between the cross-sections 45 of the pallet 11 shown in FIG.

As is apparent from FIG. 11, the support frame 59 is inclined to the left with respect to the carriage 19 by the stopper bolt 79, and the roller frame body 71 is also flat by the stopper bolt 81 in a plane substantially parallel to the support frame 59. Held in.

Therefore, the panel-shaped product 9 carried from the carry-out conveyor 17 onto the tilt table 13 descends on the roller 83 of the tilt table 13 by its own weight, and the above-mentioned stopper 77 is in the upper position and stopped. is there.

This state is shown by the chain double-dashed line in the middle of FIG. 11, and the lower end of the panel-shaped product 9 occupies a position higher than the cross-shaped portion 45 of the pallet 11, and the stopper 77 is located between the cross-shaped portions 45. It can be located low.

Further, in the sensor group box 85 shown in the front leg 55 of the right side view of FIG. 11, various detectors 87 for controlling the approach movement with respect to the pallet 11 on which the carriage 19 is stopped on the traverse conveyor 23 are provided. It is provided. The details of the various detectors 87 are sensors S ₁ , S ₂ and S ₃ described later with reference to FIG.

The traverse conveyor 23 described above is configured as shown in FIG. In FIG. 1, two upper and lower traverse conveyors 23 are provided in series, but since the main structure is the same, the one located in front of the tilt table 13 will be described.

The traverse conveyor 23 has five rollers in the traverse direction.
89 is provided, and the lower side of each is driven and rotated in the same direction by a belt 93 circulating between idle rollers 91, 91 at both ends.

The drive motor 95 shown on the left side of FIG. 12 has a chain 97 between an idle roller 91 on the left side and a sprocket provided at a distance, and three rollers 89 in the center.
A tension roller 99 is provided between them.

Fluid pressure cylinders 101, 101 are provided on both sides of the above three rollers 89.
Are provided, and the sprockets 103 are provided at the four corners of the frame assembled into the double girder that moves up and down. Further, a two-way chain conveyor 105 is provided by an electric motor (not shown).
Circulate in the axial direction of the roller 89.

The stopper ring 107 is shown on the upper right side of FIG.
It is made of a cushioning material such as rubber, and stops the pallet 11 in front of the slant table 13.

In addition to the above, regarding the method of use of the present invention, some detection devices and control methods are implemented.

As shown in FIG. 16, as shown on the right side of FIG. 11, the panel-shaped product 9 is received in a state in which the inclined table 13 has a slight downward slope toward the pallet 11. Next, when the tilt table 13 is rotated in the counterclockwise direction around the rotation shaft 57 by the fluid pressure cylinder 61 in the counterclockwise direction in FIG. 11, the rising portion of the product 9 is detected by the rotation limit detecting sensor 109 provided on the carriage 19. This is a system in which the rotation is stopped when it has completely passed.

Next, the trolley 19 on which the sloping platform 13 is placed is brought closer to the slanting surface 41 of the pallet 11 or the back surface of the preceding product 9, so that the extension of the frontal sloping surface of the product 9 is the slope and the cross section 45 of the pallet 11. Stop at a point where it intersects with the line of intersection with the upper surface, and then stop 77
Lower.

Thus, the rear end side of the product 9 is brought into contact with the bar-shaped portion 45, and then the fluid pressure cylinder 69 is operated to move the product 9 close to the slope 41 or the back surface of the preceding product 9 (the 11th product).
(Refer to the diagram on the left side of the figure.) When products are accumulated by this method, the difference in the directional direction of the upper surface of the product, δ, shown in the lower part of FIG. 16 appears depending on the size of the bending rising amount of the product 9. It is about 2%, which is practically acceptable.

FIGS. 17, 18, and 19 illustrate an integration method that does not use the rotation limit detection sensor 109 described above.

In this method, the tilt base 13 is rotated from a horizontal state to a specific angle θ such as 80 degrees, and the tilt carriage 19 is provided with a sensor base 111 provided with a sensor group as shown in FIG.
Provided on 13.

Such a sensor base 111 is configured such that a rail 117 on a bracket 113 can be moved and positioned left and right by a fluid pressure cylinder 115, for example.

As shown in FIG. 17, the approaching slope 41 of the pallet 111 is shown.
When the angle α is set to 72 degrees and the above-mentioned θ is set to 80 degrees, the product 9 is placed at a specific height from the upper surface of the bar-shaped portion 45 of the pallet 11, for example (h = 100 mm). The distance l between the front upper surface of the and the inclined slope 41 is a calculable distance.

Now, the center distance between the sensor groups S1 and S2 in FIG. 19 is (l + α)
(Α is a stop delay distance due to inertia of the sensor base 111).

Further, S3 is a deceleration switching sensor when the inclined carriage 19 moves closer to the pallet 11, and S1 is the same stop command sensor.
Set the distance between S3 and S1 appropriately.

Thus, the sensor S2 is moved to the right in FIG. 19 and stopped until it coincides with the rising front surface of the product 9.

When the carriage 19 of the slanted base 13 having the above-mentioned sensor group is moved toward the pallet 11 in the approaching direction, S3 approaches and slows down by detecting the slope 41 and the back surface of the preceding integrated product 9,
Since S1 detects and stops, the above-mentioned difference in the rising height of the upper surface of the product allows the integration in which the pointing direction difference becomes zero.

In the example shown in FIG. 20, a stationary base 19 'is used in place of the carriage 19 of the tilt base 13, and a chain conveyor is provided below the base 19' instead of the traverse conveyor 23 in front of the base 19 '. Ten
A traverse conveyor 23 'provided by extending 5 is provided.

That is, it is shown that all of the above product accumulation operations can be similarly performed by moving and approaching the pallet 11.

FIG. 21 shows a method of accumulating the products illustrated in FIG. 16 so that even a small product that does not have a bending rise can be stacked with the fluid pressure cylinder 69 having the same stroke length by leaning it on the slope 41. It is an improved one.

As in the present invention, the panel-shaped product 9 is received on the tilt table 13,
After moving to a position where the direction of the upper surface of the product intersects with the line of intersection between the above-mentioned inclined surface of the pallet 11 having the approaching inclined surface 41 and the supporting plane (top surface of the bar-shaped portion 45), the stopper 77 is lowered and one end side is moved. When the products are obliquely stacked so as to be pushed down after being brought into contact with the bearing plane, it is difficult for a product in which the bending rising dimension is significantly different.

The reason will be explained with reference to FIG.

For example, in the integrated device shown in FIG. 21, if the desired maximum rise dimension product 9H and minimum rise dimension product 9L are used, product 9H
The center of gravity of the product 9H should be on the right side of the bottom edge 1 side when the bottom edge 1 side of the bottom edge of the product abuts on the bearing surface.

If the inclination angle at that time is 15 degrees, the inclination angle of the product 9L having the minimum rising dimension is 27.5 degrees. (When the rise of 9H is 80 mm and the rise of 9L is 13 mm) Therefore, as shown in FIG. 21, the tilt table 13 and the pallet 11 are positioned close to each other until the upper surface of the product 9 matches the above-mentioned intersection line and the same. When pushing down on the opposite side with the fluid cylinder 69,
For the product 9L, the stroke length of the fluid pressure cylinder 69 is insufficient unless it is kept in a posture closer to vertical.

As a countermeasure, a sensor for detecting the rotation limit of the tilting table 13 as usual
At 109, the product 9L is tilted to 27.5 degrees, and then the stopper 77 is lowered to lower the entire product 9L so that one lower end is brought into contact with the bar-shaped portion 45 which is the bearing surface of the pallet 11.

Next, when the fluid cylinder 61 for rotating the tilt table 13 is extended to the stroke end, the upper end of the product 9L occupies the position of 9L2.

A correction auxiliary sensor 119 provided on the tilting carriage 19 is indicated by C in FIG.
When moved by the amount, the rotary shaft 57 also shifts to the left by the amount C, but the lower end of the product 9L is immobile, so the upper end occupies the position of 9L3.

Further, when the roller frame 71 is pushed down by the fluid cylinder 69, the product 9L reaches the position 9L4 and falls down and overlaps with the back surface of 9 '.

At the same time, the trolley stop sensor 12
Sensors 109, 119 and 121 so that the carriage 19 stops when 1 detects
Set and attach a, b, c, d, e, f related to the height position of.

g is the gap from the upper surface of the pallet 11 at the lower end when the product 9H is rotated at an oblique angle of 15 degrees and stopped, and j is its turning radius.

g. Effect of the invention As will be understood from the above description of the embodiments, in essence, the gist of the present invention is as set forth in the claims. Therefore, in the present invention, the panel-shaped product is provided on the frame. When placed, the support frame and the frame body are integrally tilted to an angle at which the rotation limit detection sensor does not detect the bending rising portion of the product, and the panel-shaped product is provided by the stopper provided on the frame body. The lower end side of is supported.

Then, for example, the pallet is relatively moved so that the intersection between the extension surface of the pallet slope and the top surface of the pallet and the extension surface of the sloped top surface of the panel-shaped product on the frame are substantially aligned with each other.

Then, the stopper is lowered along the inclination of the frame body so that the lower end side of the panel-shaped product is brought into contact with and supported by the upper surface of the pallet. After that, the other end side of the frame body is largely tilted away from the support frame, the panel-shaped product is pushed toward the slope side of the pallet by the frame body, and the panel-shaped product is tilted toward the slope side of the pallet to be collected. Become.

That is, when the panel-shaped product is tilted to the slope side of the pallet, the position where the extension surface of the slope intersects the pallet upper surface and the extension surface of the inclined upper surface of the panel-shaped product on the frame body are the dimensions of the bending rising portion of the product. However, when the panel-shaped product is tilted to the slope side of the pallet, the slope and the sloped lower surface of the panel-shaped product (the sloped upper surface when supported on the frame) However, after being accumulated on the pallet, the inclination direction on the frame is opposite to the inclination direction, so that the inclined lower surface is in close contact.

Therefore, when stacking the panel-like products against each other, it is possible to prevent the occurrence of scratches without slipping between the products and to stack the products in close contact with each other. It is possible to collect products so that they can be approached.

[Brief description of drawings]

FIG. 1 is an overall plan view of the product stacking device. FIG. 2 is an explanatory view of stacking and stacking box-like products. FIG. 3 is an explanatory view of stacking and stacking of panel-like products. FIG. 5 is a side view of an example of a pallet of the present invention. FIG. 6 is a front view of the same as above. FIG. 7 is an enlarged plan view of the conveyor table 25 of FIG. 1. FIG. 8 is a side view of FIG. VIII-VIII line view FIG. 9 is an enlarged plan view of the conveyor stand 27 of FIG. 1. FIG. 10 is a side view of FIG. 9 and at the same time XX line view of FIG. Fig. 12 is an explanatory view of the operation of the platform and its trolley. Fig. 12 is an explanatory diagram of the traverse conveyor.
XII-XII line view FIG. 13 and FIG. 14 are explanatory views showing the structure of the stopper. FIG. 15 is a detailed plan view of the tilting base. FIG. 16 is moving and positioning toward the pallet after rotation of the tilting base is stopped. FIG. 17 and FIG. 18 are explanatory views of a method for setting the sensor group by horizontally moving after swinging the constant angle tilt base. FIG. 19 is an explanatory view of horizontal movement of the sensor group. Is a side view of a device in which a pallet moves relative to a fixed-position tilting table and accumulates. FIG. 21 is an explanatory view of a method of correcting a tilt by turning more steeply for a product with a small amount of bending rising. Is. (Explanation of the symbols indicating the main parts of the drawing) 9: Panel-shaped product, 11: Pallet 13: Inclined table, 15: Product stacking device 19: Cart, 23: Traverse conveyor 25: Conveyor table, 27 …… Conveyor stand 29 …… Chain conveyor 41 …… Slanting slope, 45 …… Bar-shaped member 57 …… Rotating axis, 71 …… Roller frame 77 …… Stopper, 111 …… Sensor stand 119 …… Correction Auxiliary sensor

Claims (1)

[Claims] 1. A pallet (11) for supporting a panel-shaped product (9) is provided with an inclined slope (41) for moving the panel-shaped product (9) at one end, and the other end of the pallet (11) is provided. The support frame (59) is provided on the trolley (19) or the base, which can be relatively approached and separated from the side of the pallet (11) so that one end side of the pallet (11) is lowered, and the support frame (59) is The one end side of the frame body (71) is tiltably supported at one end side, and the one end side of the panel-like product (9) on the frame body (71) is contactably supported by the stopper (77). The frame body (71) is provided so as to be movable in the inclination direction, and the panel-like products (9) are brought close to the sloped surface (41) of the pallet (11) and accumulated, and each of the following steps is performed. A method for accumulating panel-shaped products, which is characterized by the above. (A) After the panel-shaped product (9) is placed on the frame body (71), the supporting frame (59) and the frame body (71) are mounted on the carriage ( 19) or a step of supporting the lower end side of the panel-like product (9) by a stopper (77) while integrally inclining to an angle at which it cannot be detected by the rotation limit detecting sensor (109) attached to the base. ) Between the extended surface of the inclined upper surface of the panel-shaped product (9) and the upper surface of the pallet (9) which is approached in advance at the intersection of the extended surface of the inclined surface (41) of the pallet (11) and the upper surface of the pallet. The pallet (11) so that the intersection part and the extension surface of the inclined upper surface of the panel-shaped product on the frame body (71) substantially coincide with each other.
Of the panel-shaped product (9) by lowering the stopper (77) along the inclination of the frame (71) so that the lower end of the panel-shaped product (9) is moved toward the pallet (11). )
(D) The panel-shaped product (9) is palletized by further inclining the frame body (71) so that the other end side of the frame body (71) is separated from the support frame (59). Step of stacking by tilting to the inclined surface (41) side of (11).