JPH0112194Y2 - - Google Patents

Description

[Detailed description of the invention] This invention captures the end of the material to be inspected that is parallel to the transport direction as it is being sent on the transport line, and inspects the predetermined position of the material to be inspected in the direction perpendicular to the transport direction. This relates to improvements in equipment.

In general, inspection equipment such as ultrasonic flaw detection equipment uses a detector (hereinafter referred to as a sensor) to perform the inspection.
It is set at a predetermined position perpendicular to the direction of conveyance of the material to be inspected (hereinafter referred to as the material to be inspected) being sent on the conveyance line, and the position is set at a predetermined position perpendicular to the direction of conveyance of the material to be inspected (hereinafter referred to as the material to be inspected), and the position is set at a predetermined position perpendicular to the direction of conveyance of the material to be inspected while it is being conveyed. However, it is required to keep the sensor in place on the material being tested. For this reason, in the above-mentioned inspection apparatus, it is necessary to detect and follow the edge portion (hereinafter referred to as an edge portion) parallel to the conveyance direction of the material to be inspected.

A conventional inspection device will be described below with reference to the drawings.

Figure 1 is a diagram for explaining a conventional inspection device. Figure 1a is a cross-sectional view so that the conveyance direction of the test material is in the vertical direction of the page, and Figure 1b is a block diagram of the same. be.

In Figures 1a and b, 1 is the material to be tested, 2 is the trolley A carrying the first sensor 3, and 4 is the material to be tested 1.
contact roller for copying the edge part z of
6 is a spring that brings the contact roller 4 into contact with the specimen 1 and maintains the contact force, and 6 is a cart B on which devices such as the cart A2 and the contact roller 4 are mounted. The trolley A2 and the trolley B6 are movable in a direction perpendicular to the transport direction of the transport line (in the left-right direction on the paper). 7 indicates that the contact roller is at the edge Z of the test material 1.
This is a second sensor that detects that the carriage A2 has been pushed to a predetermined position relative to the carriage A2. Truck B6 and truck A2 are driven in the direction of arrow C by individual drive devices 8 and 10, respectively, and their positions in the direction of arrow C are detected by position detection devices (for example, pulse generators) 9 and 11. Ru. 12 is an entry detector that detects when the material 1 to be inspected has reached a predetermined position in the transport direction; 13 is a position detection device that detects the position of the material 1 in the width direction (horizontal direction on the paper surface); 14 receives the signals from the above-mentioned detectors, generates a predetermined signal using built-in timers _T1 to _T3, etc., drives the drive devices 8 and 10, and drives the bogie B6.
This is a control device that performs control to move the trolley A2 to a predetermined position.

The cart A2 moves to a predetermined position relative to the cart B6 in the direction of arrow C based on the material width information from the material width detection device 13. Further, when it is necessary to shorten the time until the first sensor 3 starts inspecting the specimen 1, the cart B6 also operates the specimen width detecting device 13 in parallel with the operation of the cart A2. Based on the width of the material to be inspected, the front is moved from the retreat position A to the standby position B in the direction of arrow C. Next, an entry detector 13 installed at a predetermined position in the direction of the conveyance line detects the material to be inspected.
Once it is confirmed that it has entered the designated position,
The cart 6 further moves in the direction of arrow C, and eventually the contact roller 4 comes into contact with the edge z of the specimen 1, and the spring 5 that supported the contact roller 4 is further pushed in, causing the contact roller 4 to move against the cart B6. , when it reaches a relatively predetermined position, the second sensor 7 operates, the movement of the trolley 6 in the C direction stops, and the first sensor 3 moves to a predetermined position perpendicular to the conveyance line of the material 1 to be inspected. This means that it is set to the position of .

FIG. 2 is a time chart illustrating the operation in FIG. 1. 15 shows the movement of the cart B6, and 16 shows the movement of the cart A2, and the speed is shown in the vertical direction.
Reference numeral 17 indicates the operation of the second sensor 7 of the contact roll, that is, the on/off state. Both horizontal directions (direction of arrow D) indicate time. In the vertical direction of the chart 15 showing the movement of the trolley B6, a state of _F1 indicates a speed of 0 (stopped), and a state of _F2 indicates that it is moving at a predetermined speed. Trolley A2
The vertical direction of the chart 16 indicates the movement of _F3 , which indicates a speed of 0 (stopped), and _F4 , which indicates movement at a predetermined speed. contact roll 4
Chart 1 showing the operating state of the second sensor 7 of
State F ₅ of 7 indicates the state where the sensor is off, and state F ₆ indicates the state where the sensor is on.

The timing E ₁ is created by the timer T ₁ based on the reference signal from the approach detector 12, and the timing E ₂ is created by a predetermined value set based on the detection result of the material width detection device 13 and when the cart B6 has moved. The detected value of the position detecting device 11 is transmitted to the control device 1.
4 and a timing is created when the predetermined value is reached. Timing E ₃ is generated by timer T ₂ based on the reference signal from intrusion detector 12 . Timing E ₄ is generated by sensor 7 . Timing E ₅ is the entry detector 12
is generated by timer T ₃ at approximately the same time as timing E ₁ based on the reference signal.
At timing _E6 , the control device 14 compares the predetermined value set based on the detection result of the material width detection device 13 and the detection value of the position detection device 9 due to the movement of the cart A2, and the predetermined value is reached. This creates timing.

The problems with the conventional methods mentioned above are:
If the first sensor 3 has various signal lines and, for example, air piping, which serves as a driving source for moving parts of the first sensor 3, all of them must be operated together with the movement of the trolley A2. cable,
Also, the number of piping increases, making the routing complicated. Furthermore, for the above reasons, the load becomes large, and the capacity of the drive source also becomes large. Furthermore, when the sensor 2 is of a transmission type that sandwiches the material to be inspected from above and below, it cannot be denied that moving the sub-truck on which the first sensor 3 is mounted is disadvantageous in terms of alignment of the upper and lower sensors.

This invention relates to an inspection device that solves the above problems. An embodiment of this invention will be described below with reference to the drawings.

FIG. 3 is a diagram showing an embodiment of this invention.
FIG. 3a is a cross-sectional view of this invention so that the conveyance direction of the inspection object is in the vertical direction of the page, and FIG. 3b is a block diagram of this apparatus. In the figure, 4 is a contact roller, 5 is a spring, and 7 is a second
12 is an entry detector, 14 is a control device,
Reference numeral 18 denotes a contact cart A on which the contact roller 4, spring 5, etc. described above are mounted. 19 is a sensor device on which the sensor 3 is mounted, 20 is a cart B on which the contact cart 18 and the sensor device 19 are mounted, and the contact cart A18 is movable on the cart B20. 21 and 23 are drive devices for driving the contact carts 18 and 20, respectively, and 22 and 24 are position detection devices (for example, pulse generators).

Next, regarding the function of the above device according to the present invention,
This will be explained in detail based on the time chart shown in FIG.

In FIG. 4, 25 is a chart showing the operation of the cart B20, a state of _J1 indicates that the cart is stopped, a state of _J2 indicates that the cart is moving at a predetermined speed, and 26 is a chart showing the operation of the cart B20. This is a chart showing the operation, and the state of J ₃ shows that the cart is stopped, J ₄ shows that it is moving at a predetermined speed, and 27 is a chart that shows the on-off state of the sensor 7 of the contact roller 4. J ₅ indicates the off state and J ₆ indicates the on state. Both horizontal directions (direction of arrow D) indicate time.

At timing _E'2 , the control device 14 compares a predetermined value set based on the detection result of the material width detection device 13 and the detection value of the position detection device 24 due to the movement of the cart 20, and adjusts the width to the predetermined value. Timing is created by summer. At timing _E'6 , the control device 14 uses a predetermined value set based on the detection result of the object width detection device 13 and the detection value of the position detection device 22 due to the movement of the contact cart A18.
The timing is created when the predetermined value is reached.

Cart B starts moving at timing _E1 on the chart and stops at timing _E'2 , which corresponds to preset position B' in FIG. Furthermore, it starts moving again at timing E ₃ based on the entry information of the entry detector 12 of the object 1 to be inspected, and a stop instruction is activated at timing E ₄ when the chart 27 indicating the sensor 7 of the contact roller 4 is turned on, and the timing reaches the predetermined position. Stop at _E7 . In the chart 26 showing the timing of the contact cart, the contact cart A18 starts operating at timing E5, which is one after the other at timing _E1 , and stops at _{timing E'6 when} it reaches a predetermined position. Due to the above operation, unlike the conventional method,
By moving the contact roller 4, the positions of the sensor 3 of the contact roller 4 can be maintained in a predetermined relative positional relationship, and therefore the test material 1 can be inspected at a predetermined position.

As described above, according to this invention, the first sensor 3
Compared to the conventional method in which the contact roller 4 is operated, only the contact roller 4 and the second sensor 7 for detecting its position are mounted on the contact cart A, which is a movable part, and the weight is reduced. Needless to say, it is lighter, and the number of cables for sensors and the like is reduced.Furthermore, there is no need for a drive source to further operate the contact roller, so the number of moving parts such as cables and piping is gradually reduced.

Furthermore, in the case where the material to be inspected 1 is transported with its center always at a substantially constant position, in the conventional method, the preset position B of the trolley 6 changes when the width of the material to be inspected 1 changes. However, in the method based on this invention, since the contact roller 4 moves, the preset position B' can always remain constant.

Also, when using a transmission type sensor as shown in Figure 5,
The inspection device of this invention is even more advantageous. In Fig. 5, 4 is a contact roller, 5 is a spring, 1
8 is the contact cart A, 3a is the sensor transmitter,
Reference numeral 3b is a sensor receiving section, 19a and 19b are supports for the sensors 3a and 3b, and 20 is a trolley B, whose functions are the same as those explained in FIGS. 3 and 4. In particular, the transmitting section 3a and receiving section 3b of the sensor are fixed on the trolley 20, giving rise to the advantage that there is no misalignment between the transmitting section and the receiving section of the sensor.

It should be noted that the above-mentioned embodiment shows one example of this invention, and the device for tracing the edge of the material to be inspected for setting the above-mentioned sensor is not limited to the above-mentioned one without departing from the gist of this invention. Not even.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining a conventional inspection device.
FIG. 2 is a time chart for explaining a series of operations of the inspection device shown in FIG. 1, FIG. 3 is a diagram showing the configuration of the inspection device according to this invention, and FIG. FIG. 5 is a time chart diagram for explaining the operation, and is a diagram showing another embodiment of this invention. In the figure, 1 is the material to be inspected, 3 is the first sensor, 4 is the contact roller, 5 is the spring, 7 is the second sensor,
12 is an entry detector, 13, 22, 24 are position detection devices, 14 is a control device, 18 is a contact cart A, 19 is a sensor device, and 20 is a cart B. In the drawings, the same or corresponding parts are designated by the same reference numerals.

Claims (1)

[Scope of utility model registration request] In an inspection device for inspecting a material to be inspected conveyed on a conveyance line, a first inspection device for inspecting the material to be inspected is provided.
A first moving cart is equipped with a sensor and moves in a direction substantially perpendicular to the conveying direction of the conveying line, and a first movable trolley is equipped with a first moving cart that moves in a direction substantially perpendicular to the conveying direction of the conveying line; Equipped with a roller that can copy the positional deviation of the inspected material in the right angle direction,
a second movable trolley that moves on the first movable trolley; a position detector for the trolley that detects the positions of the first and second movable trolleys; a width detector for detecting the width of the material to be inspected in a direction; a position detector for the material to be inspected for detecting when the material to be inspected has come to a predetermined position;
a second sensor provided on the movable cart and operated by contact between the roller and the end of the material to be inspected, width information of the width detector, position information of a position detector for the cart, and a second sensor for the material to be inspected; control means for creating control timings for the first and second movable carts based on the position information of the position detector and the output information of the second sensor; An inspection device comprising a driving means for driving a mobile cart.