JP3470263B2 - Tile distortion measuring device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof tile strain measuring device for quickly and accurately measuring roof tile strain in the process of manufacturing clay roof tiles and the like.

[0002]

2. Description of the Related Art Generally, in the case of J-shaped or S-shaped roof tiles, the roof side lower end of the roof tile comes into contact with the collar side surface when roofing, so the parallelism of the collar side surface corresponding to the bridge side lower end is taken into consideration. There is a need. Then, as a conventional roof tile strain measuring device, for example, one disclosed in Japanese Patent Laid-Open No. 63-42412 is known.

In this device, a conveyor for supporting the side of the roof tile and a conveyor for supporting the side of the roof tile are arranged in parallel so that they can travel at the same direction and at the same speed.
An optical displacement sensor is provided at each position, and a switch for detecting the entrance of the roof tile to the measurement position is provided in the traveling direction between the two conveyors.

According to this type of apparatus, it is possible to directly measure the strain of the roof tiles that are continuously manufactured in the manufacturing line, which is in contact with the roof tiles when the roof tiles are actually roofed. There is an advantage that it is possible to measure the parallelism of the portion that contacts the lower end on the crosspiece side, that is, the collar side surface.

However, in this type of device,
In order to measure the vicinity of both the head side and the tail side of the neck side surface of the roof tile to be measured, the displacement sensor 1 is placed above both ends of the neck side surface.
It was necessary to provide each piece.

For this reason, the electric control circuit including the displacement sensor is complicated, and the cost of the measuring device is increased.

Further, the wiring work of the electric control circuit and the setting work of the program and the like are complicated at the time of manufacturing the measuring device, and the complicated work cannot be avoided in terms of the maintenance and management of the device.

Further, since the conveyor for supporting the roof side of the roof tile has a structure for supporting the roof side of the roof tile, the lower end of the roof tile on the side of the rail needs to be linear. For example, if there is a slight burr at the bottom of the roof side of the roof tile during molding,
Since the lower end on the crosspiece side, which should be the standard, is inclined with respect to the conveyor, even if the roof tile is not distorted and it is a substantially good product, a slight burr may cause a measurement result to be judged as a defective product. It was

In addition, since the roof tile is measured while it is being conveyed, the roof tile is unstable in posture when it is subjected to vibrations during conveyance or bending of the conveyor. There was a possibility that measurement could not be performed.

[0010]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is that in order to measure the strain of the roof tile, the conventional device requires at least two displacement sensors, and an electric control circuit including the displacement sensors. Is complicated, and the cost of the measuring device is high.

Further, in the apparatus for measuring the parallelism of the collar-side surface with respect to the crosspiece-side lower end, since the conveyor contacts the crosspiece-side lower end, it is necessary that the crosspiece-side lower end is formed linearly. If slight burr is generated at the lower end on the crosspiece side, accurate strain measurement may not be possible.

It is an object of the present invention to directly and accurately measure the strain of a portion that abuts when the roof tile is actually roofed, and to provide an inexpensive roof tile that has one displacement sensor for measuring the strain. The purpose is to provide a strain measuring device.

In order to achieve the above object, the tile roof strain measuring apparatus according to claim 1 is a conveyor 1 for supporting the back surface of the roof tile W.
2 is provided, and the roof tile measurement position A is set on the conveyor 12.
And the positioning means for the roof tile W
A step is provided at the measurement position A of the roof tile W, and the conveyor 12
Is equipped with a sensor 18 for detecting the entry of the roof tile W into the measurement position A.
The roof tile strain measurement device provided with a pair of measuring elements.
The vertically movable measurement unit 88 is above the roof tile measurement position A.
And one of the contact points is used as a fixed end for reference.
A child 90, and the other measuring element and the displacement sensor 92, the
The pair of gauge heads of the measured unit 88 is the conveying direction of the roof tile W.
Keep a certain distance so that it matches the
The roof tile back and forth means 20 for raising and lowering the roof tile W is provided on the back side of the roof tile W on the collar side.
Roof tiles supported by three points, one and two at the lower end of the crosspiece
Is moved up and down on the conveyor 12.

The roof tile strain measuring device according to claim 2 is
The roof tile strain measuring device according to claim 1 ,
The positioning means for the vertical direction is provided on the front side of the lift table 24 and vertically.
Braking piece consisting of a horizontal part facing inward with respect to the straight part
50 is fixed, on the other hand, a pressing low that presses the bottom B of the roof tile W.
The hip-side movable piece 52 including the la 54 is located near the rear of the lift table 24.
Provided the swing rod 22, the trailing movable piece 52 is viewed from the side
The shape is generally V-shaped, and the front-rear direction is provided via the rear side turning shaft 56.
Is rotatably mounted on the rear side and is pressed against one end of the rear side movable piece 52.
A roller 54 is provided, and the other end can be raised and lowered within a certain range.
The butt side connecting rod 58 is attached to one end of the butt side connecting rod 58, and the butt side connecting rod 58 is attached.
It is urged in the downward direction by the urging means 60.
There, 桟衿direction positioning means tile W is crosspiece S tile W
Crossbar side with two pressing rollers 66 that press two points
The moving piece 64 is provided on the lift table 24, and the crosspiece-side movable piece 64 is substantially
L-shaped, the width direction of the roof tile W through the cross-piece rotation shaft 68
It is rotatably provided at one end and one end of the crosspiece-side movable piece 64 is
It is stretched along the crosspiece S, and is attached to one end of the crosspiece-side movable piece 64.
Pressing roller 66 are two disposed at regular intervals one
On the other hand, the other end of the crosspiece-side movable piece 64 is a crosspiece that can be raised and lowered within a certain range.
The side connecting rod 70 is pivotally attached to the side connecting rod 70, and the cross-side connecting rod 70 is the rear side connecting rod.
Similarly to 58, the urging means 7 attached to the rail-side connecting rod 70
It is urged in the descending direction by 2 and the cross guide
A pressing roller for supporting the collar E of the roof tile W, which is supported by the means 74.
A collar-side movable piece 76 equipped with a roller 78 is provided on the lift table 24.
The collar-side movable piece 76 is a substantially L-shape that is symmetrical when viewed from the front.
The roof tile is rotated in the width direction of the roof tile W via the collar side rotation shaft 80.
It is movably provided.

According to the first aspect of the present invention, the roof tile is conveyed with its head side facing the rear side of the conveyor and the back surface of the roof tile being supported by the conveyor. When it almost reaches, the sensor detects the entrance of the roof tile.

Next, the roof tiles are temporarily stopped from being conveyed by the sensor, and the elevating means is operated to raise the roof tiles from the conveyor. The roof is raised by the elevating means and approaches the pair of tracing stylus of the measuring unit. One side of the roof side of the roof approaches the fixed terminal for reference and the other approaches the displacement sensor.

Then, the fixed terminal comes into contact with the collar side surface of the roof tile when the roof tile rises, but when the roof tile further rises,
The measuring unit also rises. At this time, since the roof tile is pressed by the measurement unit by acting on the roof tile whose own weight of the measurement unit rises, the roof tile does not move.

[0018] Then, increase of the tiles is stopped, the displacement sensor in contact with the one of the collar side surface of the fixed terminals tile to measure the other of the height of the collar surface. The roof tile measured by the roof tile positioning means provided in advance at the measurement position prior to this measurement is positioned at a regular position in preparation for the measurement.

At this time, when the strain on the collar side surface of the roof tile is measured, since two points at the lower end on the crosspiece side are used as a reference for the strain measurement, the elevating means makes the lower end on the crosspiece side of the roof tile into a predetermined posture. Raise.

Further, the position of the fixed terminal with respect to the displacement sensor is preset in order to grasp the parallelism of the collar side surface with respect to the lower end on the crosspiece side from the relationship between the fixed terminal and the displacement sensor.

Therefore, when the height of the other side of the roof side of the roof tile is measured by the displacement sensor while the fixed terminal is in contact with one of the side walls of the roof side, the bottom surface of the roof side corresponding to the lower end of the roof tile on the crosspiece side is Parallelism is required.

After the strain of the roof tile is measured, the roof tile is lowered by the elevating means and returned to the conveyor. The roof tiles returned to the conveyor are conveyed to the next step by driving the conveyor once stopped, but the roof tiles whose distortion is outside the permissible range after the conveyor are removed from the manufacturing line.

According to the first aspect of the present invention, the roof tile conveyed by the conveyor is set at the roof tile measurement position,
The roof tile is lifted by the elevating means, but after the fixed terminal of the measurement unit is brought into contact with one of the collar side surfaces of the tile, the displacement sensor measures the other side of the collar side, so only one displacement sensor is used. Thus, it is possible to measure the parallelism between the cross-piece side lower end of the roof tile and the collar side surface corresponding to the cross-piece side lower end.

Therefore, the electric control circuit including the displacement sensor is simplified, the cost of the measuring device can be reduced, and
Wiring work of an electric control circuit and setting work of a program and the like can be facilitated at the time of manufacturing the measuring device, and complicated work can be avoided in terms of operation and maintenance of the device.

Since the measurement unit can be raised and lowered, the roof tile lifted by the lifting means is pressed by the measurement unit moving downward by its own weight, so that the strain can be measured stably without deviating the roof tile. .

When measuring the strain of the roof tile, the lifting means is the side of the roof tile of the roof tile.
Supports three points, one on the back and two at the lower end on the crosspiece side
Since the roof tiles are stable, the roof tiles move vertically
Never.

At the same time, since the positioning means can position the roof tile in the head end direction and the cross direction of the roof tile, the roof tile does not move in the head end direction and the cross direction.

When the swing rod 22 tilts upward, the rear side connection
The rod 58 lowers the other end of the buttocks side movable piece 52 downward.
Therefore, the pressing roller 54 at one end of the hip side movable piece 52
Turns toward the butt B side of the roof tile W with the butt side turning shaft 56 as a pivot.
By moving, it approaches the bottom B side of the roof tile W, and the pressing roller 5
4 presses against the bottom B of the roof tile W and contacts the head H with a braking piece 50.
Both the front and rear positions of the roof tile W on the supports 40, 42, 44 are positioned.
Placed (see Figure 5). Therefore, the tile of the roof tile W
The position in the direction is the position determination means provided on the lift table 24.
Is securely regulated by the
The position of W does not change, and the positioning means of the collar is a lifting hand.
Since it is provided on the step 20, it can be used as a means for positioning the collar of the bridge.
Even if the roof tile W is positioned further,
The displacement of the roof tile W is small and the roof tile W is not damaged.
In addition, the crossbar positioning means is composed of three pressing rollers 66, 78.
Since the roof tile W is positioned via the
Smooth positioning of the roof tile W after positioning and measurement
You can

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a tile roof strain measuring device according to an embodiment of the present invention, and FIG. 2 is a side view of the device (for convenience of explanation, a probe near a valley V of the tile W is not shown). 3 is a plan view showing the main part of the device, FIG. 4 is a front view of the main part of the device when measuring roof tiles, and FIG. 5 is a side view of the main part of the device when measuring roof tiles (for convenience of explanation, roof tiles are shown). (A probe in the vicinity of the valley V of W is not shown), FIG. 6 is a perspective view of a main part of the measuring unit, and FIGS. 7 and 8 are explanatory views for measuring strain in a J-shaped roof tile.

A conveyor 12 having a pair of belts 14 is installed so that the back surface of the conveyor 12 faces the belts 14 and the roof tile W can be conveyed in a horizontal state. A round belt is adopted as the belt 14 of the conveyor 12 in this embodiment, so that one belt 14 contacts the back surface of the mountain M of the roof tile W and the other belt 14 contacts the back surface near the collar side. The belts 14 have different heights (see FIG. 1).

A belt receiving member 16 having a substantially V-shaped cross section is provided on the lower surface of the belt 14 with which the roof tile W abuts, so that the belt 14 is prevented from moving in the vertical and width directions when the roof tile W is conveyed. There is.

A measurement position A of the roof tile W is set slightly forward of the center of the conveyor 12. At the measurement position A of the roof tile W, an optical sensor 18 for detecting whether or not the roof tile W being conveyed has entered is provided. In this embodiment, the sensor 18 is provided from the side of the conveyor 12 toward the transport surface of the conveyor 12 (see FIGS. 1, 3, and 4).

Below the measurement position A of the roof tile W, an elevating means 20 for lifting the roof tile W from the belt 14 of the conveyor 12 and lowering the lifted roof tile W onto the belt 14 is provided. . The elevating means 20 in this embodiment is arranged so that the conveyor 1 moves from the measurement position A of the conveyor 12.
The rocking rod 22 extends toward the start end of the rocking rod 2 , and the lifting table 24 is provided on the rear end of the rocking rod 22.

The swing rod 22 is swingably provided up and down via a fulcrum shaft 26 provided near the start end of the conveyor 12, so that the swing platform 22 can be raised and lowered by the swing of the swing rod 22. Has been planned.

On the lower surface of the swing rod 22 near the center thereof,
A roller support 28 is provided downward, and a rollable cam roller 30 is attached to the lower end of the roller support 28.

On the other hand, a drive motor 34 having a speed reducer 32 is provided below the conveyor 12, and an eccentric cam 38 is attached to a rotary shaft 36 of the speed reducer 32. The eccentric cam 38 and the cam roller 30 are arranged so that the cam roller 30 of the swing rod 22 contacts the outer periphery of the eccentric cam 38 (see FIGS. 2 and 5). Therefore, when the eccentric cam 38 is rotated by the operation of the drive motor 34, the cam roller 30 moves the eccentric cam 38 as the eccentric cam 38 rotates.
Following the above, the swing rod 22 is swung in the vertical direction.

The lift table 24 provided on the swing rod 22 includes
Three supports 40, 42, and 44 are provided for contacting the back surface of the roof tile W and supporting the roof tile at three points (see FIGS. 4 and 5). These three supports 40, 42, 44 are roof tiles W
Of the cross-piece side lower ends K of the cross-piece side supports 40, 42
And a collar side support member 44 that supports one portion of the back surface near the collar side of the roof tile W.

The crosspiece-side supports 40, 42 are provided on the lift table 24 so as to correspond to the position of the crosspiece-side lower end K of the roof tile W on the conveyor 12.

In this embodiment, in order to support the roof tile W in a more accurate and point-contact state, the crosspiece-side supports 40 and 42 are a combination of two support rollers 46. The rolling direction of the support roller 46 is parallel to the transport direction. The reason why the supporting roller 46 is parallel to the conveying direction is that the lower end K on the crosspiece side is the reference when measuring the strain on the collar side surface. This is to secure the position of the lower end K on the crosspiece side as a reference by supporting in a point contact state.

On the other hand, the collar side support member 44 for supporting the rear side of the roof tile W on the collar side is mounted on the lifting table 24 so as to be positioned between the pair of belts 14 of the conveyor 12 and near the collar side belt 14. It is installed. The support roller 48 is also used for the collar side support 44, but the collar side support 44
The support roller 48 of is oriented in a direction perpendicular to the transport direction (see FIGS. 3 and 4).

The reason why the support roller 48 of the collar side support 44 is perpendicular to the carrying direction is that the crosspiece side support 4
This is because the cross-piece side lower end K is supported at two points by the support rollers 48 of 0 and 42, and the remaining one point on the collar side is supported in a comfortable state. That is, as is known, the back side of the roof W of the roof tile W generally draws an arc with a gentle cross section from the collar side to the valley, so by making it correspond to this arc direction, it makes contact in a point contact state, It is designed so that the roof tile W can be reliably supported.

Therefore, each of these supports 40, 4
It is possible to support the roof tile W at three points in a natural state without any difficulty by the support rollers 46, 46, 48 of 2,44. Although the eccentric cam 38 is used for raising and lowering the raising and lowering means 20 in this embodiment, it may be replaced with, for example, a crank mechanism or a fluid pressure cylinder.

Next, the roof tile positioning means will be described. The roof tile positioning means is intended to control the posture of the roof tile in advance in preparation for measuring the strain on the collar side surface,
Positioning of the roof tiles in the head and tail direction and positioning in the direction of the rails. It will be described for convenience that the roof tile positioning means for positioning the roof tile in the head and tail direction and in the cross direction of the roof tile is composed of head and tail positioning means and crossbar positioning means.

First, the head-and-bottom positioning means will be described. A braking piece 50 consisting of a vertical portion and a horizontal portion facing inward with respect to the vertical portion is fixed to the front side of the lift table 24 (FIG. 2, FIG. 2). (See FIG. 5). This is because when the roof tile W reaches the measurement position A of the conveyor 12 and the swing rod 22 is tilted upward, the head H of the roof tile W contacts the braking piece 50 and stops the roof tile W at the measurement position A.

On the other hand, the pressing roller 5 for pressing the bottom B of the roof tile W
The butt-side movable piece 52 provided with 4 is provided on the rocking rod 22 near the rear of the lifting table 24, but at a position corresponding to the butt B of the roof tile W. The hip-side movable piece 52 is substantially V-shaped when viewed from the side, and is rotatably provided in the front-rear direction via a hip-side turning shaft 56.

A pressing roller 54 is provided at one end of the buttocks side movable piece 52, and the other end is pivotally attached to one end of a buttocks side connecting rod 58 which can be raised and lowered within a certain range. Ass side connecting rod 58
Is urged in a descending direction by urging means 60 attached to the butt side connecting rod 58, and is supported by butt side guide means 62 (see FIG. 2).

From this, when the rocking rod 22 is tilted upward, the tail side connecting rod 58 lowers the other end of the buttocks side movable piece 52 downward, and the one end of the buttocks side movable piece 52 is lowered. The pressing roller 54 is directed toward the butt B side of the roof tile W, and the butt side rotation shaft 56
The support roller 40, 42, 44 on the supports 40, 42, 44 together with the braking piece 50 that comes in contact with the head H by the pressing roller 54 pressing the bottom B of the roof tile W by approaching the bottom B side of the roof tile W by rotating about the support shaft. The front and rear positions of the roof tile W are positioned (see FIG. 5).

Next, the crossbar positioning means will be described. Two pressing rollers 6 for pressing two portions of the cross S of the roof tile W
Although the crosspiece-side movable piece 64 having the crosspiece 6 is provided on the lifting table 24, it is located at a position corresponding to the crosspiece S of the roof tile W. The crosspiece-side movable piece 64 is substantially L-shaped and is rotatably provided in the width direction of the roof tile W via the crosspiece-side rotation shaft 68.

Further, one end of the crosspiece-side movable piece 64 has a crosspiece S of the roof tile W.
And two pressing rollers 66 are provided at one end of the crosspiece-side movable piece 64 at a constant interval.
It is designed so that two portions of the crosspiece S of the roof tile W can be pressed.

On the other hand, the other end of the crosspiece-side movable piece 64 is pivotally attached to one end of a crosspiece-side connecting rod 70 which can be raised and lowered within a certain range (see FIG. 4). The rail-side connecting rod 70 is biased in the descending direction by the biasing means 72 mounted on the rail-side connecting rod 70, as well as the rear-side linking rod 58, and the rail-side guiding means 74.
(See FIG. 1).

The lifting table 24 is provided with a collar side movable piece 76 having a pressing roller 78 for pressing the collar E of the roof tile W.
The position corresponds to the collar E of the roof tile W. Collar side movable piece 7
The reference numeral 6 is a substantially L-shape that is symmetrical left and right when viewed from the front, and is provided so as to be rotatable in the width direction of the roof tile W via a collar-side rotation shaft 80 (see FIG. 4). One pressing roller 78 is provided at one end of the collar-side movable piece 76, and is designed to be able to press almost the center of the collar E of the roof tile W.

On the other hand, the other end of the collar side movable piece 76 is pivotally attached to one end of a collar side connecting rod 82 which can be raised and lowered within a certain range. The collar-side connecting rod 82 is, like the rear-side connecting rod 58 and the cross-side connecting rod 70, the biasing means 8 attached to the collar-side connecting rod 82.
In addition to being urged in the descending direction by No. 4, it is supported by the collar side guide means 86 (see FIG. 1).

From this fact, when the swing rod 22 is tilted upward, the rail-side connecting rod 70 lowers the other end of the rail-side movable piece 64 downward, so that the push-rod of the rail-side movable piece 64 is pushed down. -One end of the side of the la 66 is the roof tile W with the crosspiece-side turning shaft 68 as a spindle.
By rotating toward the rail S side of the roof tile W, the rail S approaches the rail S of the roof tile W, and the two pressing rollers 66 press the rail S of the roof tile W.

On the other hand, the collar-side connecting rod 82 descends with the other end of the collar-side movable piece 76 facing downward, and the collar-side movable piece 7
One end of the pressing roller 78 near 6 is rotated toward the collar E side of the roof tile W by using the collar side rotating shaft 80 as a support shaft to thereby rotate the roof tile W.
The pressing roller 78 presses the roof tile W toward the collar E.

In this way, by the two pressing rollers 66 of the crosspiece-side movable piece 64 and the pressing roller 78 of the collar-side movable piece 76,
The crosspiece S and the collar E of the roof tile W are respectively pressed, the position of the roof tile W in the width direction is positioned while the roof tile W is supported at three points, and the position of the positioned roof tile W is regulated (see FIG. 4). ).

Therefore, the position of the roof tile W in the direction of the bridge is surely regulated by the bridge positioning means provided on the lifting table 24, and the position of the roof W does not change with respect to the lifting means 20. Since the positioning means is provided in the elevating means 20, even if the position of the roof tile W is positioned by the crossbar positioning means, the displacement of the roof tile W with respect to the crossbar positioning means is small and the roof tile W is not damaged.

Further, since the crossbar positioning means positions the roof tile W through the three pressure rollers 66, 66, 78, the roof tile W is positioned in the crossbar direction and the posture of the roof tile W after the measurement is regulated. It can be done smoothly.

In this embodiment, the positioning means is provided on the elevating means 20, but the elevating means 20 is not limited to the positioning means. As described above, since the posture of the roof tile W is controlled in advance in preparation for the strain measurement, the roof tile W may be provided independently at the measurement position A and beside the conveyor 12 without being combined with the elevating means 20.

Next, the measuring unit 88 for measuring the strain of the roof tile W, the fixed terminal 90 as the tracing stylus, and the displacement sensors 92, 94, 96 will be described. Measuring unit 8
8 is a fixed terminal 90 and displacement sensors 92, 94, which will be described later.
It supports 96, and is provided so as to be movable up and down above the measurement position A of the roof tile.

Measuring unit 88 in this embodiment
Is a unit swing shaft 98 supported above the start end of the conveyor 12; a unit frame body 100 axially attached to the unit swing shaft 98 and extending to a roof tile measurement position A;
It is composed of a tracing stylus support 102 provided on the unit frame body 100 (see FIGS. 2 and 6).

Therefore, when the roof tile W is lifted by the elevating means 20 described above at the roof tile measurement position A, the roof tile W to be lifted is measured while contacting the fixed terminal 90 and the displacement sensors 92, 94, 96 described later. Unit 88
Specifically, the unit frame body 100 is tilted upward with the unit swing shaft 98 as a support shaft, and the tracing stylus support body 102 rises.

Although not shown, the measuring unit 8
A stopper is provided to prevent 8 from falling below a certain height.

In this embodiment, the unit frame 100 is extended from the unit frame swing shaft 98 toward the starting end of the conveyor 12, and the balance weight 108 is provided at the extended end. Balance weight 108
This is because the load of the measurement unit 88 on the roof tile W does not become an unnecessarily large load when the measurement unit 88 is lifted while the lifted roof tile W is in contact with the measurement unit 88. This is because the posture of the roof tile W becomes unstable if an excessive load is applied to the roof tile W from the measurement unit 88.

In this embodiment, the balance weight 1
08 is slidable in the front-rear direction with respect to the unit frame 100, and the balance weight 108 can be fixed at a position suitable for the unit frame 100. By adjusting the position of the balance weight 108, the load of the measurement unit 88 on the roof tile W can be adjusted to a preferable load, and the delusion of the roof tile W during measurement can be reliably achieved.

The position where the balance weight 108 is fixed is set in advance, and the balance weights 1 having different weights are set.
You may prepare many 08 and exchange it as needed.

On the tracing stylus support 102 of the measuring unit 88, a fixed terminal 90, which is a tracing stylus, and displacement sensors 92, 94,
96 is provided, and in this embodiment, the tiles W are arranged so that the strain of the tile W can be measured at two positions near the collar E and the valley V on the surface of the tile W.

Among the four measuring elements, the measuring element provided so as to correspond to the head side near the collar E of the roof tile W is the measuring element support 1
It is the fixed terminal 90 for the reference fixed to 02 (FIG.
(See FIG. 6). The fixed terminal 90 has a rod shape and is merely fixed to the tracing stylus support 102, and does not actually measure the height of the roof tile W near the collar E.

On the other hand, the remaining three measuring elements are known displacement sensors 92, 9 for measuring the height of the surface of the roof tile W in contact therewith.
4, 96, and the tip ends of the displacement sensors 92, 94, 96 are provided with movable ends 106 that are vertically arranged (see FIG. 6). The movable ends 106 of the displacement sensors 92, 94 and 96 are
In addition to moving up and down within a predetermined range, the displacement sensor 92,
It is provided so as to be positioned at the lowermost end in the normal state by the urging force of the elastic members (not shown) provided on the members 94 and 96.

Of the displacement sensors 92, 94, 96, the displacement sensor 92 provided so as to correspond to the tail near the collar E is combined with the fixed terminal 90 described above, and the displacement sensor 92 near the collar E is It is provided so that the strain can be measured. That is, the movable end 106 of the displacement sensor 92 is provided so as to protrude downward from the horizontal line extending from the tip of the fixed terminal 90 by a distance corresponding to half the movable distance of the movable end 106 (FIG. 8). See).

In this embodiment, two points near the collar and the valley V are measured. However, only one point near the collar may be measured. If necessary, the tile M (pier pass) may be measured. You may. Therefore, in this embodiment, three examples of the displacement sensor were given as described later, but by measuring the strain of only the collar side surface by at least one displacement sensor as described in the object of the invention, It is made clear that the present invention can achieve the object. Further, if the number of the measuring units 88 is two and provided so as to move up and down independently of each other, the structure of the measuring element near the valley V can be made similar to that of the measuring element near the collar E.

Although the displacement sensors 92, 94 and 96 are of the contact type in this embodiment, they may be of the non-contact type such as an optical type.

Next, the strain measuring apparatus 10 according to this embodiment
The action of will be explained. The roof tile W whose surface is directed upward is conveyed in a horizontal state from another conveyor (not shown) in front of the conveyor 12. At this time, the head H of the roof tile W is set to the rear of the conveyor 12 and the tail B is set to the front.

When the conveyed roof tile W reaches the measurement position A of the conveyor 12, the sensor 18 for detecting that the roof tile W has reached the measurement position A reacts. The elevating means 20 rises based on the signal from the sensor 18. Specifically, the sensor 18
The drive motor 34 receives the signal from the eccentric cam 38, and the eccentric cam 38 rotates. However, since the cam roller 30 follows the eccentric cam 38, the swing rod 22 tilts upward with the fulcrum shaft 26 as the fulcrum shaft. Turn to.

At the front end of the swing rod 22, a lift table 24 is provided.
Since the rocking rod 22 is attached, the lifting table 24 rises as the swing rod 22 rotates.

The roof tile W that has reached the measurement position of the conveyor 12 is
As the elevating table 24 rises, the head H of the roof tile W is first regulated by the head-end positioning means. Specifically, the braking piece 50 provided on the lift table 24 causes the roof tile W to rise as the lift table 24 rises.
The head H is brought into contact with the roof tile W, and the transportation of the roof tile W is stopped. And
Since the lifting platform 24 is further raised, the roof tile W
It is supported by 42 and 44 at three points.

Concretely, the crosspiece side supports 40 and 42 provided on the lifting table 24 support the crosspiece side lower end K of the roof tile W at two places, and the collar side support 44 closes the tile side of the roof tile W. One place on the back is supported.

Next, the attitude of the roof tile W is regulated by the positioning means provided on the elevating means 20. Specifically, it is carried out by the head and tail positioning means and the crosspiece positioning means provided on the lifting table 24. When the swing rod 22 tilts upward,
The butt-side connecting rod 58 descends with the other end of the butt-side movable piece 52 directed downward, one end of the butt-side movable piece 52 approaches the butt B of the roof tile W, and the pressing roller 54 moves the butt of the roof tile W. The support members 40, 42, 4 and 4 together with the braking piece 50 that presses against B and contacts the head H.
The front and rear positions of the roof tile W on 4 are positioned (see FIG. 5).

Further, as the elevating table 24 is raised, the crosspiece-side connecting rod 70 descends toward the other end of the crosspiece-side movable piece 64 almost at the same time as the roof tile W is positioned in the front-rear direction. One end of 64 approaches the crosspiece S of the roof tile W, and the two pressing rollers 66 press the crosspiece S of the roof tile W. On the other hand, the collar side connecting rod 82
Means that the other end of the collar side movable piece 76 descends downward, one end of the collar side movable piece 76 approaches the collar E of the roof tile W, and the pressing roller 78 presses the collar E of the roof tile W.

In this way, the two pressing rollers 66 of the crosspiece-side movable piece 64 and the two pressing rollers 78 of the collar-side movable piece 76 respectively press the crosspiece S and the collar E of the roof tile W, so that the roof tile W is removed. Three
The position of the roof tile W in the width direction is positioned in a state of being supported by points, and the position of the roof tile W thus positioned is regulated (see FIG. 4).

Therefore, as the roof tile W is supported at three points and the lift table 24 is moved upward, the positioning of the roof tile W in the head end direction and the cross direction is completed. In this embodiment, the roof tile W is positioned by the roof tile positioning means provided in the elevating means 20 at the measurement position A when the roof tile W is raised.
It is provided separately from the elevating means 20 at the measurement position A, and is positioned before the roof tile W is raised before the strain measurement, and the conveyor 1 is used.
Positioning on 2 is also planned.

Then, the elevating table 24 is further raised and the roof tile W
Is further lifted, the roof tile W abuts on the probe. At this time, in the case of the roof tile W having no distortion near the collar, the movable end 106 protruding downward from the fixed terminal 90 is used.
The displacement sensor 92 having the above is first contacted. Since the roof tile W continues to rise, a part of its own weight of the measuring unit 88 acts on the movable end 106 of the displacement sensor 92, and the movable end 106 rises with respect to the displacement sensor 92, while the roof tile W is attached to the fixed terminal 90.
The surfaces of abut.

When the fixed terminal 90 comes into contact with the surface of the roof tile W, the measuring unit 88 is supported by the unit swing shaft 98 and the fixed terminal 90, and the unit swing shaft 98 is supported.
The measuring unit 88 rises via the. Then, while maintaining this state, the displacement sensor 92 measures the height of the measurement point when the elevating table 24 rises to the maximum.

The displacement sensor 9 provided near the valley V
Similar to the displacement sensor 92 near the collar E, Nos. 4 and 96 are in contact with the roof tile W, and are measured when the elevating table 24 is lifted to the maximum.

At this time, when the elevating table 24 is raised, the connecting rods 58, 70,
Although 82 descends, each pressing roller 54, 66, 78 maintains the pressing force against the roof tile W by the elastic force of the biasing means 60, 72, 84 provided on each connecting rod 58, 70, 82. . Therefore, the posture of the roof tile W is completely restricted even at the time of measurement.

When the displacement of the roof tile W is measured by the displacement sensors 92, 94 and 96, the lifting table 24 descends as the eccentric cam 38 rotates, and the positioning means releases the regulation of the posture of the roof tile W. . Further, the measuring unit 88 is also lowered to the position regulated by the stopper.

Then, the roof tile W is returned to the conveyor 12 by further lowering of the elevating table 24, the head H of the roof tile W is released from the braking piece 50, and the roof tile W is conveyed to the next process by the conveyor 12.

If there is distortion near the collar E of the roof tile W,
The fixed terminal 90 is indicated by line segments n'and n "in FIG.
And the roof tile W contacts the displacement sensor 92.

The purpose of measuring the strain of the roof tile W by the displacement sensor 92 of the roof tile W is to determine whether the strain of the roof tile W is good or bad. At the time of measurement, the lower end K of the roof tile W on the crosspiece side is supported by the support roller 46 at two points, and a line segment m connecting the two points can be obtained. In addition, a line segment n connecting two points at the measurement point on the collar side can be obtained.

Therefore, the distortion determination of the roof tile W can be determined by comparing the parallelism with the line segment n connecting the measurement points with the line segment m connecting the two points supported by the support roller 46 as a reference. (See FIGS. 7 and 8).

Then, the measured value of the reference roof tile W which is used for the quality determination is stored in advance, and the quality of the roof tile due to the distortion is determined based on the difference in height between the reference roof tile W and the measured roof tile W on the collar side. be able to. As a result of the comparison, the roof tile W that exceeds a predetermined difference
Is treated as a defective product because a considerable gap is generated when the roof tile W is roofed.

According to the roof tile strain measuring apparatus 10 of this embodiment, a vertically movable measurement unit 88 is provided above the roof tile measurement position A, and a pair of roof tiles W are arranged toward both ends of the collar E side surface. Of the measuring element 88 is provided in the measuring unit 88, one of the measuring elements is used as the fixed terminal 90 for reference, and the other measuring element is used as the displacement sensor 92. Therefore, with respect to the measurement of the strain near the collar E, the measuring unit 88 is fixed. After the terminal 90 is brought into contact with one of the surfaces of the roof tile W near the collar E, the displacement sensor 9
Since 2 measures the other surface near the collar E, it is possible to measure the parallelism between the lower end on the crosspiece side of the roof tile W and the surface on the collar E side corresponding to the lower end of the crosspiece with only one displacement sensor 92.

Since the measurement unit 88 is movable up and down, the roof tile W lifted by the measurement unit 88 is pressed during the measurement, so that the roof tile W can be stably measured without deviating.

Further, the position of the roof tile W in the direction of the head end is the lift table 24.
The position of the roof tile W does not change with respect to the elevating means 20, and the head buttocks positioning means is provided in the elevating means 20, so that the head buttocks positioning means is provided. Even if the position of the roof tile W is positioned by the means, the displacement of the roof tile W with respect to the head-end positioning means is small, and the roof tile W is not damaged.

Further, the position of the roof tile W in the direction of the crossbar is the height of the lift table 2.
4 is securely regulated by the crossbar positioning means, the position of the roof tile W does not change with respect to the elevating means 20, and the crossbow positioning means is provided in the elevating means 20. Even if the position of the roof tile W is positioned by the positioning means, the displacement of the roof tile W with respect to the crosspiece positioning means is small and the roof tile W is not damaged.

In addition, since the crossbar positioning means positions the roof tile W through the three pressing rollers 66 and 78, the roof tile W is positioned in the direction of the crossbar and the posture of the roof tile W after measurement is smoothly regulated. Can be done.

Further, the roof tile W is once stopped at the measurement position A to measure the strain of the roof tile W, but the roof tile W is lifted from the conveyor 12 by the operation of the eccentric cam 38 for one rotation (about 1 second). Positioning and regulation of the posture of the roof tile W, displacement sensor 92
The measurement and the return of the roof tile W to the conveyor 12 can be performed quickly and almost at the same time, and it is comparable with the processing capacity of the apparatus for measuring the roof tile W while being transported.

In the present embodiment, the roof tile W to be measured is the J-shaped roof tile, but the strain of the S-shaped roof tile can be measured even if the S-shaped roof tile is used instead of the J-shaped roof tile. Further, in the F-shaped ridge, if the overlapping portion and the underlap portion of the F-shaped ridge correspond to the ridge and the collar of the J-shaped ridge, respectively, the strain can be measured similarly to the J-shaped ridge.

If necessary, the measuring unit 88 may be provided with a pressing roller for pressing the mountain M of the roof tile W so as to surely prevent the roof tile W from being lifted when the strain is measured.

[Brief description of drawings]

FIG. 1 is a front view of a roof tile strain measuring apparatus according to an embodiment of the present invention.

FIG. 2 is a side view of the device.

FIG. 3 is a plan view of a main part of the same device.

FIG. 4 is a front view of the main part of the device when measuring roof tiles.

FIG. 5 is a side view of a main part of the device when measuring roof tiles.

FIG. 6 is a perspective view of a main part of a measurement unit.

FIG. 7 is an explanatory diagram of measurement of strain on a J-shaped roof tile.

FIG. 8 is an explanatory diagram of measurement of strain in a J-shaped roof tile.

[Explanation of symbols]

10 Roof tile strain measuring device 12 conveyor 14 belt 16 Belt receiver 18 sensors 20 lifting means 22 Swing rod 24 Lifting platform 26 fulcrum axis 28 Roller support 30 cam roller 32 reducer 34 Drive motor 36 rotation axis 38 Eccentric cam 40 Support (crosspiece side) 42 Support (crosspiece side) 44 Support (collar side) 46 Support roller (crosspiece side) 48 Support roller (collar side) 50 braking pieces 52 Buttocks movable piece 54 Pressing roller (butt side) 56 hip rotation axis 58 Butt side connecting rod 60 urging means 62 Butt guide means 64 Crosspiece-side movable piece 66 Pressure roller (crosspiece side) 68 Cross-side rotation axis 70 Bar side connecting rod 72 biasing means 74 Side guide means 76 Collar side movable piece 78 Pressing roller (collar side) 80 Collar side rotation axis 82 Collar side connecting rod 84 Biasing means 86 Collar side guidance means 88 Measuring unit 90 fixed terminal 92 Displacement sensor (collar, hip) 94 Displacement sensor (valley, head) 96 displacement sensor (valley, hip) Swing shaft for 98 units 100 unit frame 102 Stylus support 106 movable end 108 Balance weight W roof tile H head B ass S cross E collar V valley M mountain K pier side lower end A measurement position

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-4-29009 (JP, A) JP-A-52-8851 (JP, A) JP-A-62-42412 (JP, A) JP-A-10- 221034 (JP, A) JP 7-43141 (JP, A) JP 63-42412 (JP, A) JP 61-265504 (JP, A) JP 4-29010 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G01B 21/20 E04D 1/00 G01B 5/20

Claims (2)

(57) [Claims] 1. A conveyor 12 for supporting the back surface of the roof tile W is provided.
When the roof tile measurement position A is set on the conveyor 12,
In both cases, the roof tile elevating means 20 and the roof tile W positioning means are roof tiles.
The roof tile W is provided at the measurement position A of W and is attached to the conveyor 12.
Is provided with a sensor 18 for detecting the entry of the
In the roof tile strain measuring apparatus, the roof tile is equipped with a pair of measuring elements that can move up and down freely.
Is provided above the measurement position A of the
Use the probe as the fixed terminal 90 for the reference, and use the other probe as the displacement sensor.
Sensor 92, and the pair of measuring elements of the measuring unit 88 conveys the roof tile W.
Face the collar-side surface with a specified gap so that the direction matches.
The roof tile elevating means 20 is arranged on one side of the roof side of the roof tile W and the crosspiece.
Conveying roof tiles by supporting three points with two points at the lower end of the side
12. A roof tile strain measuring device characterized in that it is moved up and down on 12 . 2. Positioning means of the roof tile W in the direction of the head and bottom of the roof tile is moved up and down.
The front side of the stand 24 and the inside of the vertical section
The braking piece 50 consisting of a horizontal part is fixed, while the roof tile
Buttocks side movable piece provided with a pressing roller 54 for pressing the buttocks B of W
52 is provided on the swing rod 22 near the rear of the lifting table 24, and the buttocks side movable piece 52 has a substantially V shape when viewed from the side.
It is provided so as to be rotatable in the front-rear direction via a rotation shaft 56, and a pressing roller 54 is provided at one end of the hip side movable piece 52.
The other end is attached to one end of the hip-side connecting rod 58 that can be raised and lowered within a certain range.
The rear side connecting rod 58 is pivotally attached and is lowered by the urging means 60.
The tile W is positioned at two positions on the rail S of the roof tile W.
Crosspiece-side movable piece 6 provided with two pressing rollers 66 for pressing
4 is provided on the lifting table 24, the crosspiece-side movable piece 64 is substantially L-shaped, and the crosspiece-side rotating shaft 68 is provided.
Is provided rotatably in the width direction of the roof tile W, and one end of the crosspiece-side movable piece 64 is stretched along the crosspiece S of the roof tile W.
Then, one end of the crosspiece-side movable piece 64 is pressed at a constant interval.
Two rollers 66 are provided, while the other end of the crosspiece-side movable piece 64 is movable up and down within a certain range.
The rail- side connecting rod 70 is pivotally attached , and the rail-side connecting rod 70 is connected to the rear side.
Like the rod 58, the biasing means attached to the rail-side connecting rod 70
It is urged in the direction of descending by 72, and the side plan
Pressed by the inner means 74 to press the collar E of the roof tile W
A collar-side movable piece 76 provided with a roller 78 is provided on the lifting table 24.
The collar-side movable piece 76 has a substantially L shape which is symmetrical when viewed from the front.
It is in the shape of a letter and extends in the width direction of the roof tile W via the collar side rotation shaft 80.
The roof tile strain measuring apparatus according to claim 1, wherein the roof tile distortion measuring apparatus is provided so as to be rotatable .