JPH0134139Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a device that non-contact detects whether or not the reinforcing bars near the edges of an ALC (lightweight foamed concrete) slab are placed in a predetermined position, and marks the results. It is something.

As shown in the partially cross-sectional perspective view of Figure 1, the ALC
Inside the plate material 1, reinforcing bars A and B, in which sub-reinforcements 3 are welded perpendicularly to the main reinforcing bars 2 in the longitudinal direction, are fixed with spacers 4 and reinforced. And reinforcing bars A and B
The sub-reinforcements 3 are arranged at opposing positions except for the ends, and sub-reinforcements 3a are also welded to the ends of the main reinforcement 2 in the reinforcing bar mat B. This sub-stripe 3a
It is essential to maintain the strength of the ALC plate material 1 that it is disposed at a predetermined position from the end surface of the ALC plate material 1. However, in the past, inspections were carried out by workers.
Add a sharp piece of iron from the outer surface of the edge of ALC plate material 1 to sub-reinforcement 3.
I checked by typing until I hit a. Therefore
There was a problem in that scratches remained on the end face of the ALC plate material 1, which not only damaged the commercial value but also damaged the anti-rust coating of the sub-stripe 3a and deteriorated the quality. In addition, as a method of inspecting the sub-stripe 3a without contacting the ALC plate material 1, it is possible to use powerful X-rays, but this method not only requires large equipment and space and is expensive, but also This method has the disadvantage that it requires a long time because it can only inspect one sheet at a time.

The present invention eliminates such conventional drawbacks by using a proximity switch, such as a high-frequency oscillation type proximity switch, as a sensor, and aligning the end faces to be inspected and connecting the end face of a large number of laminated ALC plates with the sensor. By finely adjusting the distance between the two and keeping them at regular intervals, and moving the sensor perpendicular to the reinforcing steel to be detected, continuous inspection can be performed without contact, and the results can be marked directly on the plate material. This is what I did. An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 2 is a perspective view showing an embodiment of the reinforcing bar detection device of the present invention, and FIG. 3 is a front view thereof. As shown in the figure, a transmitter 7 of a transmission type photoelectric relay is fixed to the tip of a support 6 protruding from the top of the detection device main body 5, a receiver 8 of a transmission type photoelectric relay is fixed to the lower part of the main body 5, A positioning device consisting of a motor cylinder 10 that engages a substrate 9 and a main body 5 is used to align the end faces to be inspected in advance and finely adjust the distance between the end face of a large number of stacked ALC plates 1 and the detection sensor 11 to be constant. adjust. Therefore, the main body 5 is movable in parallel to the conveying direction of the ALC plate material 1. The detection sensor 11 is fixed to the side surface facing the ALC plate material 1 of an arm 14 which is attached via two slide bearings 13 to two guide rails 12 fixed perpendicularly to the main body 5. The arm 14 is attached to a chain 15 arranged parallel to the guide rail 12, and is vertically movable by a motor 16. Further, the surface of the sensor 11 is set at a predetermined distance from the optical axis plane of the transmitter 7 and receiver 8 of the transmission type photoelectric relay. Although various types of proximity switches can be used as the sensor 11, it is preferable to use a high-frequency oscillation type proximity switch with a detection distance of 80 to 100 mm to avoid malfunctions such as detecting other reinforcing bars and to achieve high accuracy. Desired sub-stripe 3a
This is good because it only detects.

Next, as a marking device, a pipe is connected from a tank 17 attached to the arm 14 to a spray nozzle 19 via an electromagnetic pump 18, and when the electromagnetic pump 18 is activated, ink is sprayed from the nozzle 19 onto the ALC plate material 1. It's becoming like that.
In addition, 21 is a pallet for conveying the ALC plate material 1,
Reference numeral 22 indicates a conveying roller thereof, and 23 indicates a limit switch that detects the end face of the ALC plate material 1 placed on the pallet 21 that has been transported and stops the roller 22.

The operation of the device of the present invention constructed in this manner will be described next. The ALC plates 1 are stacked with the end faces to be inspected aligned and placed on a pallet 21, and are transported by transport rollers 22 to just in front of a detection device and stopped at a limit switch 23.
At this time, the arm 14 of the detection device is set in advance at the highest position so that it does not come into contact with the ALC plate material 1. Next, when the positioning device for the main body 5 of the detection device is activated, the main body 5 is moved by the motor cylinder 10 in a direction opposite to the advancing direction of the pallet 21 until the light receiver 8 is activated and then stopped. At this time, the distance between the detection sensor 11 and the end face of the ALC plate material 1 is maintained at a constant interval. Then, when the motor 16 of the detection device is started, the arm 14 is
The sensor 11 attached to is lowered at a constant speed. When the sensor 11 passes through the inspection surface of the ALC plate 1, if the sub-reinforcement 3a is arranged at a predetermined position on the plate 1, the sensor 11 operates to operate the electromagnetic pump 18, and the nozzle 19 Spray ink to mark the ALC plate material 1. It is also possible to record information on the chart or issue an alarm if necessary.

By using the detection device of the present invention in this way, desired sub-stretches 3a in a large number of ALC plates 1 can be detected with high precision.
It is also possible to detect, mark, record, or issue a warning without contact and in a short time. Note that the positioning device for fine adjustment is not limited to the embodiment. In addition, in the detection device of the present invention, reinforcing bars A and B are connected to two ALCs.
It goes without saying that it can be used not only for plate materials, but also for detecting reinforcing bars in ALC plates with a single reinforcing bar mat, and plates with sub-reinforcements placed at predetermined positions from the end face of other concrete panels. It is also possible to align the inspection surfaces of the plates horizontally and move the sensor horizontally at right angles to the sub-reinforcement, or by installing a photoelectric relay, sensor, and nozzle on the back of the arm, and inspecting the reinforcing bars on the opposite end of the plate material. can also be detected.

As described above in detail, the present invention has extremely significant effects on improving product quality and productivity.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing the arrangement of reinforcing bars of an ALC plate material, FIG. 2 is a needle perspective view showing one embodiment of the reinforcing bar detection device of the present invention, and FIG. 3 is a front view thereof. DESCRIPTION OF SYMBOLS 1... ALC plate material, 3a... Sub-line, 5... Detection device main body, 7... Emitter, 8... Light receiver, 10...
...Motor cylinder, 11...Detection sensor,
12...Guide rail, 14...Arm, 15...
...Chain, 16...Motor, 17...Tank,
18...Electromagnetic pump, 19...Spray nozzle,
21... Palette, 23... Limit switch.

Claims (1)

[Scope of claim for utility model registration] (1) A large number of sheets are laminated with the end surfaces to be inspected aligned.
A positioning device is provided with a detection device body that is movable in parallel to the conveyance direction of the ALC plate material, and finely adjusts the distance between the end face of the ALC plate material to be inspected and the reinforcing bar detection sensor attached to the detection device body at regular intervals. , it is characterized by being equipped with a device that moves this detection sensor in a direction perpendicular to the detected reinforcing bars in the ALC plate material, and a nozzle that sprays ink to mark the end face of the ALC plate material when a reinforcing bar is detected. Reinforcing bar detection device for ALC plate material. (2) The reinforcing bar detection device for ALC plate material according to claim 1, wherein the reinforcing bar detection sensor is a high-frequency oscillation type proximity switch.