JPH0321465B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention correctly stacks flexible products such as fabric pieces transported by a conveyor etc. on a product holder using an auxiliary conveyor that rotates along a suction box having a suction function. This invention relates to a continuous automatic stacking device for placing fabrics, etc.

In general, a conventional device for automatically stacking products such as flexible film or sheet-like thin members, such as pieces of fabric, in a continuous manner is shown in FIG. 1, for example.

1 is a main conveyor for conveying the product W, and 2 is a peeling plate for peeling off the product W from the conveyor and guiding and transferring it to the auxiliary conveyor 3. 4a,
4b are the light emitting part and light receiving part of the phototube, respectively; 5
is a reflecting plate for reflecting the light beam, and is provided facing the gap in the direction of rotation of the auxiliary conveyor 3, so that when there is no product W on the conveyor, the phototube is shielded from light. There isn't.

Now, when the tip of the product W sent from the main conveyor 1 blocks light from the phototubes 4a and 4b, the signal causes the product holder 6 to move toward the rail 7 in the direction of arrow A.
Once the product has been completely placed, it comes into contact with the limit switch 8, and in response to the signal from the limit switch, the product holder 6 moves back in the direction of arrow B, and stops at the stopper 9. It returns to the initial position where it touches and stops. Then, when the next product blocks the light from the phototubes 4a and 4b, the product holder 6 moves forward again and repeats the operation of placing the next product, thereby placing a large number of products on the product holder 6 in succession. They are automatically stacked.

However, such conventional continuous automatic stacking equipment is inefficient because the next product cannot be placed until the product pedestal has returned to its initial position, and the product pedestal does not move on the rail. There was a problem in that the device became longer as it was moved, requiring a larger installation space.

This invention was made in view of these conventional problems, and has an upper chamber and a lower chamber defined by a partition plate, and has a large number of ventilation holes on its surface. A continuous automatic stacking device for fabrics, etc., comprising a box, an auxiliary conveyor that rotates along the surface of the suction box and has ventilation, and a product receiving stand provided below the auxiliary conveyor. The aim is to solve the above problems.

The present invention will be explained below based on the drawings.

2 and 3 are diagrams showing an embodiment of the present invention.

First, the structure will be explained. Reference numeral 11 denotes a separate roller for separating the product W conveyed by the main conveyor 1 from the main conveyor and guiding and transferring it to the auxiliary conveyor 12. Auxiliary conveyor 1
2 is an endless mesh-shaped belt member 12a so as to have air permeability. 1
Reference numeral 3 denotes a suction box provided inscribed in the auxiliary conveyor, which defines an upper chamber 15 and a lower chamber 16 by a partition plate 14, and a large number of suction boxes are formed on the surfaces of the upper and lower chambers, respectively. Ventilation holes 15a and 16a are provided. 15b and 16b are upper chamber 15, respectively.
A suction hole provided in the lower chamber 16 communicates with a pressure reducing machine (not shown), and 17 is a solenoid valve for opening and closing only the intake hole 16b of the lower chamber 16.

Reference numeral 18 denotes a reflecting plate provided on the slope 13a of the suction box 13 in order to reflect the light rays from the pair of phototubes 19a and 19b. Note that, as in the conventional example, the phototube and the reflector are mounted so as to face the gap in the rotating direction of the belt member 12a.

Reference numeral 20 denotes a product receiving stand on which the product W that has fallen from the lower surface of the auxiliary conveyor 12 is placed, and is transferred to the table 23 via the link 22 by the reciprocating movement of the cylinder 21.
It is now possible to go up and down.

24a and 24b are a pair of phototubes provided to detect the height of the products W stacked on the table 23.

Next, the action will be explained.

The product W sent by the main conveyor 1 is separated from the main conveyor by a separate roller 11 and sent to the auxiliary conveyor 12, but during operation, both the upper and lower chambers 15 and 16 of the suction box 13 are depressurized. Therefore, it is attracted to the auxiliary conveyor 12 which has ventilation and rotates together with it. Then, the product W remains attached to the belt member 12a and rotates to the lower side of the auxiliary conveyor 12, so that the ends of the product W are attached to the photocells 19a and 19.
When b is shielded from light, the solenoid valve 17 is actuated by the signal and the intake air from the lower chamber 16 is stopped.
is released from the auxiliary conveyor 12 and falls, and is placed on the table 23 of the product holder 20.

Since the product W is sent continuously,
They are stacked one after another at the same position on the table 23, but when the stack exceeds a predetermined height, the phototubes 24a and 24b detect the height, and the cylinder 21 is actuated by the detection signal, and the link 22 By lowering the table 23 via the
The product is controlled so that the falling distance from the auxiliary conveyor 12 is always the same.

In addition, since the time during which the intake of air from the lower chamber 16 stops due to the operation of the solenoid valve 17 is extremely short, there is no need to increase the distance between the product and the product to be sent next, as in the case of the conventional example. do not have.

As explained above, according to the present invention, the structure has an upper chamber and a lower chamber defined by a partition plate, and a large number of ventilation holes are formed in the surfaces of the upper chamber and the lower chamber. A suction box provided therein, an auxiliary conveyor configured by a breathable belt that rotates along the surface of the suction box, and a product receiving stand provided below the auxiliary conveyor. Because this automatic continuous stacking device for fabrics, etc. is characterized by Therefore, stacking can be done several times faster, and since the entire product falls horizontally, the stacking is orderly.Also, since the product holder does not move from side to side, the installation area of the device is small. The effect of this can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of a conventional example, FIG. 2 is a schematic explanatory diagram of the present embodiment, and FIG. 3 is a partially enlarged sectional view of FIG. 2. 14... Partition plate, 15... Upper chamber, 16... Lower chamber, 15a, 16a... Ventilation hole, 3, 12... Auxiliary conveyor, 12a... Belt, 13... Suction box, 20... Product receiver The stand.

Claims (1)

[Claims] 1 Defined by a partition plate, having an upper chamber communicating with the pressure reducing machine and a lower chamber communicating with the pressure reducing machine via a solenoid valve, and having numerous ventilation holes on the surfaces of the upper chamber and the lower chamber. A perforated suction box, an auxiliary conveyor configured by a breathable belt that rotates along the surface of the suction box, a product receiving stand provided below the auxiliary conveyor, and an auxiliary A continuous automatic stacking device for fabrics, etc., characterized in that it is equipped with a detection body that detects the end of the product rotated to the bottom of the conveyor and operates a solenoid valve based on the signal to stop the intake of air into the lower chamber. .