JPH0429010A - Method and device for automatic deformation inspection of tile product - Google Patents

Abstract

PURPOSE:To improve the inspection efficiency by supporting the tile product at three points and also providing touch sensors corresponding to two points each before and behind a cleat side and a neck side, operating the outputs of the touch sensors by a computer, and deciding whether the tile is normal or defective. CONSTITUTION:The tile W has its flank positioned by a fixed guiding roller 4 and its top surface pressed by a pressure roller 6 at an inspection point and is supported at three points on conveyors 1 and 2. When a position sensor detects the tile W to be inspected being supplied onto the conveyors 1-3 in order and reaching a measurement position, the height sensors 16a and 16b, and 17a and 17b on the cleat side and neck side are put in operation and the positions of touch rollers 7a and 7b, and 8a and 8b are detected corresponding to the specific positions of the tile W and inputted to the computer 18. The computer 18 compares the input signals from the touch sensors 16a and 16b, and 17a and 17b with preset reference values, decides whether the tile is normal or defective according to the permissible range, and displays the decision result on a display device 20.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to an automatic distortion inspection method and apparatus for tile products such as crosspiece tiles to determine the quality of the tile products, and in particular, an automatic distortion inspection method and device for determining the quality of tile products such as crosspiece tiles. The present invention relates to a method and apparatus for inspecting distortion of tile products.

(Prior art) It is well known that tile products are generally distorted during the forming and firing process, but until now, the discrimination between good and defective products based on this distortion has been done visually, so I couldn't decide whether it was good or bad.

In order to solve this problem, we have already published Japanese Patent Application Laid-Open No. 61-26
As described in Publication No. 5504, a guide roller that supports the back side of the product and a side roller that guides both sides are provided at the inspection position where the tile product to be inspected is brought in, and the surface of the tile product is placed at a predetermined position at the inspection position. A potentiometer with a touch roller at the lower end is installed at a position facing above each inspection point, and the vertical position of each inspection point is measured by the potentiometer. A method and apparatus for inspecting distortion of tile products has been proposed, in which a defective product, a defective punch line, and a defective spring are inspected based on the height position of a specific point among three inspection points.

(Problems to be Solved by the Invention) In conventionally known methods and devices for testing strain on tile products, the back surface of the product is supported at a measurement point by a guide roller.

However, the crosspiece tile is curved from the head side to the tail side of the machine, and its length is not constant. Therefore, if only one side of the crosspiece tile is restricted with a stopper, the level of the measurement point will be insufficient. The accuracy of the deviation measurement was poor.

In addition, the positioning of the crosspiece tiles in the front and back direction is performed using stoppers, and -
Measurements must be taken while standing still, resulting in slow measurement speed and poor work efficiency.

Furthermore, since the depth of the valleys cannot be measured, although it is possible to determine the types of product punch defects, spring defects, and non-defective products, it is not possible to distinguish between non-defective products and defective products due to valley defects. According to the present invention, the tile products W being transferred on the conveyors 1, 2.3 are pressed from above at the inspection position, and the trough head side, the trough bottom side, and the machine side of the bottom of the tile product are pressed from above at the inspection position. touch rollers 7a, 7b, 8a, 8b, and height sensors that measure the vertical movement of the touch rollers 7a, 7b, 8a, 8b corresponding to four points in total, two points in front and back on the machine side and collar side of the surface of the tile product. 16a16b, 17a 1
7b is provided, the output from the touch sensor is input to a computing device 18, and the computing device performs a comparison operation to determine punch defects, spring defects, non-defective products, and valley defects. Automatic distortion inspection method for crosspiece tiles. And the tile product W transferred on the conveyors 1, 2.3 is placed on the bottom side of the tile product corresponding to the inspection position, and a linearly movable string conveyor 2 that supports the center of the valley and a flat surface that supports the machine side. A top chain conveyor 1 having a plate is provided, and a presser roller 6 is provided on the surface side of the tile product W at a position closer to the machine side from the center in the direction of transport of the tile product, and supports the side surface of the tile product on the side of the crosspiece. A fixed guide roller 4 and a movable guide roller 5 that support the side surface of the tile product are provided, and touch rollers 7a, 7b, 8a, and 8b are provided corresponding to the inspection points on the surface of the tile product, and a height roller that measures the vertical movement of these rollers is provided. An automatic distortion inspection device for tile products is obtained, which is characterized in that it is equipped with a touch sensor consisting of sensors 16a and 16b.

(Example) The embodiments shown in the drawings will be described below.

As shown in FIGS. 1 and 2, the main body of the automatic distortion inspection device for tile products such as crosspiece tiles is provided with two reference conveyors 1.2 and an auxiliary conveyor 3 in parallel. is now being transferred.

Of the two reference conveyors 1.2, the conveyor located on the lower surface of the machine side of the tile W is constituted by a top chain conveyor 1 having a flat plate on the upper surface.
The conveyor 2 located at the lower surface of the center (center of gravity) is constituted by a string-like conveyor 2 having an arcuate surface on the upper surface.

Further, the auxiliary conveyor 3 is provided on the lower surface of the collar side of the tile W, and the tile W is lifted up from the conveyor 3 at the inspection position.

A fixed guide roller 4 is provided on the side surface of the crosspiece tile W, which is rotatable in a fixed position while contacting the side surface of the crosspiece tile W, and a fixed guide roller 4 is provided on the side surface of the collar side of the crosspiece tile W, for example, by a spring force. A movable guide roller 5 is provided which rotates while constantly pressing the collar-side side surface of the crosspiece tile W.

On the other hand, on the upper surface of the crosspiece tile W, a press roller 6 that rotates while pressing the upper surface of the crosspiece tile W and is movable up and down is provided at a position closer to the machine side from the center in the transport direction of the crosspiece tile W.

Therefore, at the inspection position, the side surface of the crosspiece tile W is positioned by the fixed kite roller 4, the top surface is pressed by the press roller 6, and the bottom surface is pressed by the top chain conveyor 1 on the head side or bottom side of the lower surface on the machine side. Supported and centered (
The center of gravity) is supported at three points, with two points on the lower surface supported by the string conveyor 2.

Then, touch rollers 7a, 7b, 8a, 8b are provided corresponding to predetermined positions of the crosspiece W (front and rear of the machine side and front and rear of the collar side).
is provided.

The touch rollers 7a, 7b, 8a, 8b are each supported by a support frame 9 so as to be slidable in the vertical direction.
, 10b, 1la1, and 1b.

Moreover, the operating rods 10a, 10b, lla.

Racks 12a and 12b are provided at the other end of 11b, respectively.

13a, 13b are formed, the racks 1.2a,
12b, 13a, 13b have pinions 14'a, 1, respectively.
4b, 15a, and 15b are engaged with each other.

And the binions 14 a , 14 b , 1
5a.

Height sensors 16a, 16b, 17a17b such as rotary encoders are provided at one end of the support shaft 15b, and the height sensors 16a, 16b, 17a, 17b are connected to the computer 18.

Further, on the bottom side of the crosspiece tile W, there is a crosspiece tile W that is being transferred.
A position sensor 19 is provided to detect the position of the crosspiece W, and the position sensor 19 detects the position of the crosspiece W.
8, the measurement timing of the height sensors 16a, 16b, 17a, and 17b is output.

20 is a display device, 21 is a prime mover such as a motor, and a chain
The reference conveyor 1.2 and the auxiliary conveyor 3 are driven via known power transmission devices such as sprockets.

Next, a method for automatically detecting distortion of a crosspiece tile according to the present invention will be explained.

First, a good standard crosspiece tile is inserted into the measured value 1 of the reference conveyor 1.2, and as shown in FIGS. 3 and 4, the valley of the crosspiece tile W is Two points E and F on the front and back of the bottom surface and the front G of the machine side bottom of the crosspiece tile W on the top surface of the crosspiece side reference conveyor (top chain conveyor) 1.
Or adjust the inclination of the central reference conveyor 2 so that it contacts at one point on either side H, a total of three points.

Further, the side surface of the crosspiece tile W is adjusted so that it contacts the fixed guide roller 4 and the side surface of the collar side contacts the movable kite roller 5, respectively.

In this state, as shown in FIG.
, 8a, 8b are brought into contact with the surface of the crosspiece tile, and their positions are detected by height sensors 16a, ], 6b.

17a, 17b''' CM reading, reference value (
In addition to inputting the reference value as the measurement median value, the allowable range (limit value for pass/fail judgment) for this reference value is set.

Next, the crosspiece tiles W to be inspected are sequentially supplied onto the conveyor 12.3, and the position sensor 1 detects that the crosspiece tiles W have reached the measurement value 1.
9, the height sensors 16a, 16b, 17a, 17b are activated in synchronization with the timing to move the touch rollers 7a, 7b, 8a corresponding to the predetermined positions of the tile W on the machine side and the front and rear of the collar side. , 8b is detected and inputted to the computing device 18. The computing device 18 detects the height sensors 16a, 716b, 17a
, 17b are compared with a preset reference value, and if the input signal is within the allowable range, it is determined to be a good product, and if it is outside the allowable range, it is determined to be a defective product and displayed on the display device 120.

At this time, as shown in Fig. 5, the front position on the crosspiece side is A, the rear position on the crosspiece side is B, the front position on the collar side is C1, the rear position on the collar side is D, and C for a>A and/or If the difference in height between D and B exceeds the maximum or minimum range, it is determined that there is a valley defect.

b) If the difference in height between B with respect to A and D with respect to C is within the upper and lower limits, the product is determined to be non-defective.

C) Also, compare the absolute value of the height difference of B to A and the height difference of D to C, and if it is larger on the A9B side,
If A>B, the punch line is defective, and if A<B, the spring is defective. on the other hand,
When either C or D side is large, if it is COD, the spring is defective, and C<
If it is D, it is determined that the punch line is defective.

If necessary, it is also possible to display the type of defect and the degree (numerical value) of the defect on the display device. In addition, although not shown in the drawings, a good/defective product switching device is provided at the rear stage of this inspection device, and the device is activated by a pass/fail determination signal from the computer 18 to automatically distinguish between non-defective products and defective products. You may also do this.

(Effects of the Invention) According to the present invention, it is possible to automatically inspect the tile product for distortion and determine whether it is good or bad while transporting the tile product on a conveyor without having to temporarily stop it with a stopper as in the past, thereby greatly improving inspection efficiency. north to south. Moreover, since the inspection position is supported at three points by a conveyor that moves in a plane, the reference position is accurate, and inspection accuracy is also improved.

In addition, while the type of defect and the degree of defect (numerical value) can be confirmed at an early stage using a display device, it is also possible to feed back the cause of the defect to the manufacturing site to improve operations and reduce the rate of defective products. It has the effect of

[Brief explanation of the drawing]

Fig. 1 is a schematic front view of the automatic strain detection device for crosspiece tiles of the present invention, Fig. 2 is a side view of the same, Fig. 3 is a side sectional view taken along the line ◯~ in Fig. 1, and Fig. 4 is a schematic front view of the automatic strain detection device for crosspiece tiles of the present invention. FIG. 5 is a side sectional view taken along the line and a plan view showing the relationship between the crosspiece tiles and the touch roll at the inspection position. Reference conveyor (Top chain conveyor) 2: Reference conveyor (String conveyor) 3: M assistant conveyor 4: Fixed guide roller 4: Movable guide roller 6: Presser rollers 7a, 7b, 8a, 8b
: Touch roller 9 : Support frame 10a, 10b, 11a, llb : Operating rod 12a, 1
2b, 13a, 13b Nirakku 14a, 14b, 15
a, 15b: pinions 16a, 16b, 17a, 17
b: Height sensor 18: Computing machine 19: Position sensor

Claims (1)

[Claims] 1) The tile product being transferred on the conveyor is pressed from above at the inspection position, supported at three points on the bottom of the tile product: the head side of the valley, the bottom side of the valley, and the side of the crosspiece. Touch sensors are installed at four points in total, two points on the front and back on the crosspiece side and collar side on the surface of the tile product, and the output from the touch sensors is input to a computer, which compares and calculates the defects. , an automatic distortion inspection method for tile products, characterized by distinguishing between defective springs, non-defective products, and defective valleys. 2) A top chain conveyor that has a linearly movable string conveyor that supports the center of the trough and a flat plate that supports the crosspiece side on the bottom side of the tile product to correspond to the inspection position of the tile product being transferred on the conveyor. and a presser roller is provided on the surface side of the tile product at a position closer to the crosspiece side from the center in the transport direction of the tile product, and a fixed guide roller supporting the crosspiece side side surface of the tile product and a collar side side surface are provided. An automatic distortion inspection device for tile products, characterized in that a supporting movable guide roller is provided, and a touch sensor is provided corresponding to the inspection point on the surface of the tile product.