JP2014070894A - Inspection measurement stage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inspection measurement stage capable of more precisely inspecting for bent and curl on a product formed of a steel plate.SOLUTION: An inspection measurement stage 100 is an inspection measurement stage for placing a product 81 thereon when inspecting the product 81 formed of a steel plate. The inspection measurement stage 100 has plural support mechanisms 50 for supporting the product at predetermined intervals in a longitudinal direction. Each of the support mechanisms 50 includes: a mounting table 58 for mounting a product 81; and a movable mechanism 55 to support the mounting table 58 movably in a shorter side of the inspection measurement stage 100 due to an elastic force of the product 81.

Description

  The present invention relates to an inspection measurement stage on which a product formed by a steel plate is inspected.

  Conventionally, a product may be formed by subjecting a steel sheet to roll forming, welding, and pressing. In addition, it has also been conventionally performed to construct a forming line incorporating a forming machine and form a product from a steel plate by the forming line. For example, as a conventional forming line for forming a product by subjecting a steel sheet to roll forming, as a forming line for forming an electric resistance tube from a steel sheet, “an electric resistance pipe manufacturing line is a belt wound around a rotating shaft 1a. The uncoiler 1 that rewinds the plate-like material 11 and supplies it downstream, and the belt-like material 11 is gradually bent from a flat plate into an arc-shaped cross section, and finally a cylinder. ... which is formed between a roll forming machine (commonly known as forming roll stand) 2 ··· and a roll forming machine 2 · 2 which are curved in a cross-section, and the thickness of the strip-like material 11 is continuously increased A thickness measuring device 7 that measures the thickness of the material, a welding machine 3 that heats the joint of the material 11A that is abutted in a cylindrical shape to the melting point or higher by induction heating, and presses and welds it with an upset roll, and molding by welding The heated ERW pipe 11B was heated Cooling device 4 that cools the contact part to room temperature by air cooling and water cooling, and after cooling, roll shaping machine 5.5 that determines the outer dimension by reducing the outer diameter of the ERW pipe 11B with a squeezing roll (commonly known as sizing, A roll stand), roller tables 15, 15... For conveying the shaped original pipe 11C to the downstream side, a running cutting machine 6 for cutting the original pipe 11C into a fixed length, A contact roller type measuring device 8 that continuously measures the travel length and travel speed of the original tube 11C, a main controller 9 that uses a programmable controller, and the original tube 11C that is traveling through the inter-running cutting machine 6. And a servo control device 10 that performs control for cutting at a predetermined length in synchronization with the same speed. "(See Patent Document 1) has been proposed.

  When a product is formed from a steel plate by a forming line, the inspection of bending and warping of the product is generally performed on a stock conveyor (roller table 15 in Patent Document 1) provided on the downstream side of the forming machine. That is, when a product is formed from a steel plate by a forming line, a stock conveyor is generally used as a measurement stage for product inspection.

  FIG. 7 is a perspective view for explaining a conventional product inspection method performed on a stock conveyor. FIG. 7A is a perspective view for explaining a product bending inspection, and FIG. 7B is a perspective view for explaining a product warpage inspection.

  The steel sheet formed into a predetermined cross-sectional shape by the forming machine is cut into a predetermined length by the cutting machine to become a product 81, and then sent to the stock conveyor 40. The stock conveyor 40 is provided with a plurality of rollers 41 that rotate about the rotational axis along the short direction of the stock conveyor 40, and these rollers 41 are arranged at predetermined intervals in the longitudinal direction of the stock conveyor 40. Has been. For this reason, the product 81 delivered from the cutting machine is carried into the stock conveyor 40 so that its longitudinal direction is along the longitudinal direction of the stock conveyor 40, and is placed on the roller 41. Thus, when inspecting the bending and warping of the product 81 placed on the roller 41 of the stock conveyor 40, conventionally, the inspection is performed using the water thread 92 as shown in FIGS. 7 (a) and 7 (b). It was.

  Specifically, conventionally, when inspecting the bending of the product 81, as shown in FIG. 7A, the water yarn 92 is stretched along the longitudinal direction of the product 81, and the distance between the water yarn and the end portion of the product 81. Y was measured with a scale or the like. And the bending of the product 81 was calculated | required by measuring the distance Y in the several measurement location along the longitudinal direction of the product 81, and it was test | inspected whether the bending of the product 81 was within tolerance. Conventionally, when inspecting the warp of the product 81, as shown in FIG. 7B, the product 81 is rotated 90 degrees, and the distance Z between the rotated product 81 and the water thread is measured with a scale or the like. It was. And the curvature of the product 81 was calculated | required by measuring the distance Z in the several measurement location along the longitudinal direction of the product 81, and it was test | inspected whether the curvature of the product 81 was within tolerance.

Japanese Patent Laying-Open No. 2003-326312 (paragraph 0010, FIG. 1)

  When the product 81 is carried into the stock conveyor 40, the product 81 is pushed into the stock conveyor 40 along its longitudinal direction. For this reason, a load for bending the product 81 acts on the product 81. When the product 81 is bent by the bending load at the time of carrying in, the product 81 has an elastic force against the bending load at the time of carrying in, and the product 81 is at the time of product formation (when it is cut by a cutting machine). Is restored to the bent state.

Here, in order for the product 81 to be bent at the time of product formation against the bending load at the time of carry-in, the product 81 is on the roller 41 in the short direction (the short direction of the product 81 and the stock conveyor 40). You need to slip and correct your posture. That is, a frictional resistance proportional to the weight of the product 81 is generated between the product 81 and the roller 41. Therefore, in order for the product 81 to slide on the roller 41 and correct its posture, the elastic force of the product 81 is the product. It is necessary to exceed the frictional resistance generated between 81 and the roller 41. For this reason, when the length of the product 81 is longer than a certain length, as shown in FIG. 8, the elastic force of the product 81 (the force acting in the direction indicated by the white arrow in FIG. 8) is the product. The frictional resistance generated between the roller 81 and the roller 41 is lower, and the product 81 cannot slide on the roller 41 and return to the bent state when the product is formed. Therefore, conventionally, there has been a problem that the bending of the product 81 cannot be accurately measured, and the bending inspection of the product 81 cannot be accurately performed. When warping inspection of the product 81 is performed, the product 81 is rotated 90 degrees on the roller 41, but the elastic force of the product 81 is less than the frictional resistance generated between the product 81 and the roller 41. Then, even if the product 81 is rotated, the product 81 remains bent due to the bending load at the time of loading. For this reason, when the length in the longitudinal direction of the product 81 is a certain length or more, there is a problem that the warpage inspection of the product 81 cannot be performed accurately.
Note that the above-described “length not less than a certain value” varies depending on the cross-sectional shape of the product 81 (more specifically, the cross-sectional shape in a virtual plane perpendicular to the longitudinal direction).

  The above problem is not a problem that occurs only when the stock conveyor 40 is used as a measurement stage for inspection of the product 81. The above-mentioned problem is also a problem that occurs in the same manner when the product 81 is placed on an inspection measurement stage provided at a place different from the molding line for inspection. Specifically, when the product 81 is transported to an inspection measurement stage provided at a location different from the molding line, belts, hooks, etc. are hung on a plurality of locations (a plurality of locations along the longitudinal direction) of the product 81, and the product 81 is craned. It will be carried to the measurement stage for inspection while fishing. At this time, in a state where the product 81 is lifted, the product 81 is bent by its own weight, with an engagement portion such as a belt or a hook serving as a fulcrum. When the product 81 is placed on the inspection measurement stage in this state, if the length of the product 81 in the longitudinal direction is a certain length or more, the elastic force of the product 81 is the product 81 and the inspection measurement stage. The product 81 falls below the frictional resistance generated during this period, and the product 81 cannot slide on the measurement stage for inspection and return to the bent state during product formation. For this reason, even when the product 81 is placed on an inspection measurement stage provided at a place different from the molding line and inspected, if the length in the longitudinal direction of the product 81 is a certain length or more, the product There was a problem that 81 bending and warping could not be accurately inspected.

  Further, as described above, the water yarn 92 is used for the inspection of the bending and warping of the conventional product 81. However, since the slack of the water yarn 92 occurs due to the force of the installer, the bending and warping of the product 81 cannot be accurately measured, and the bending and warping inspection of the product 81 cannot be accurately performed. was there.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an inspection measuring stage that can inspect the bending and warping of a product formed of a steel plate more accurately than in the past. And

  The inspection measurement stage according to the present invention is an inspection measurement stage on which a product is placed when inspecting a product formed of a steel plate, and supports the product in the longitudinal direction of the inspection measurement stage. A plurality of mechanisms are provided at predetermined intervals. Each of the support mechanisms includes a mounting table on which the product is mounted, and a moving mechanism that supports the mounting table so that the mounting table can move in the short direction of the measurement stage for inspection by the elastic force of the product. And.

  Moreover, in addition to said structure, the test | inspection measurement stage which concerns on this invention may be provided with the some roller provided in the said longitudinal direction via the predetermined space | interval. In this case, the support mechanism is disposed between the rollers in a plan view, and the upper surface portion of the mounting table is disposed below the upper portion of the roller in the lowered state, and the upper surface portion of the mounting table is disposed in the raised state. A height adjusting mechanism is provided above the upper part of the roller.

The measurement stage for inspection according to the present invention may include at least three contact-type or non-contact-type measurement apparatuses that measure the distance in the short direction to a product along the longitudinal direction.
At this time, it is preferable to include a storage device that is connected to each of the measurement devices and stores the measurement results transmitted from each measurement device.

  In the measurement stage for inspection according to the present invention, the upper surface portion of the mounting table may be formed of a resin member.

  In the measurement stage for inspection according to the present invention, the mounting table of each support mechanism on which the product is placed is movable in the short direction (that is, the short direction of the product) of the measurement stage for inspection by the elastic force of the product. It has become. For this reason, even if the elastic force of the product falls below the frictional resistance generated between the product and the mounting table, the product returns to the bent state when the product is formed by moving the mounting table. be able to. For this reason, the measurement stage for inspection according to the present invention can inspect the bending and warping of the product more accurately than in the past.

  In addition, a plurality of rollers are provided in the longitudinal direction of the measurement stage for inspection through a predetermined interval, and the support mechanism is arranged between the rollers in plan view, and the upper surface portion of the mounting table is placed in each of the support mechanisms in the lowered state. The inspection measurement stage according to the present invention is formed as a stock conveyor by providing a height adjustment mechanism that is arranged below the upper part of the roller and in the raised state, the upper surface part of the mounting table is arranged above the upper part of the roller. Can be incorporated into the line. That is, by lowering the mounting table by the height adjustment mechanism, the upper surface portion of the mounting table is arranged below the upper part of the roller, so that the measurement stage for inspection according to the present invention can be used as a stock conveyor. it can. Further, by raising the mounting table by the height adjusting mechanism, the upper surface portion of the mounting table can be disposed above the upper portion of the roller, and the product can be mounted on the mounting table of each support mechanism. . As a result, the product can return to the bent state at the time of product formation, and the bending and warping of the product can be inspected more accurately than before.

In addition, by providing at least three contact-type or non-contact-type measurement devices for measuring the distance to the product along the longitudinal direction of the inspection measurement stage, the product can be accurately bent and warped without using water thread. Can be measured. For this reason, it is possible to inspect the bending and warping of the product more accurately.
At this time, by providing a storage device that is connected to each of the measurement devices and stores the measurement results transmitted from each measurement device, the operation of manually inputting the measurement results to the storage device is not required, and the work efficiency is improved. It is also possible to prevent erroneous input of measurement results and erroneous determination due to the erroneous input.

  Moreover, it can prevent that a product is damaged by forming the upper surface part of the mounting base in which a product is mounted with a resin member.

It is a block diagram which shows the molding line which concerns on Embodiment 1 of this invention. It is a block diagram which shows the stock conveyor which concerns on Embodiment 1 of this invention. It is a perspective view which shows the support mechanism provided in the stock conveyor which concerns on Embodiment 1 of this invention. It is explanatory drawing for demonstrating the measurement result at the time of performing the bending measurement of a product using the stock conveyor which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows another example of the moving mechanism which concerns on Embodiment 1 of this invention. It is a perspective view which shows the measurement stage for a test | inspection which concerns on Embodiment 2 of this invention. It is a perspective view for demonstrating the conventional product inspection method performed on a stock conveyor. It is a perspective view for demonstrating the state which the bending generate | occur | produced in the product by the bending load generate | occur | produced at the time of stock conveyor carrying in.

Embodiment 1 FIG.
In the first embodiment, an example in which the measurement stage for inspection according to the present invention is incorporated in a molding line as a stock conveyor will be described.

FIG. 1 is a configuration diagram showing a molding line according to Embodiment 1 of the present invention.
The molding line 1 according to the first embodiment includes an uncoiler 10, a roll molding machine 20, a cutting machine 30, a stock conveyor 40, and a loading / conveying unit 60. The uncoiler 10 supplies a flat steel plate 80 wound in a spiral shape to the downstream roll forming machine 20. The roll forming machine 20 rolls a flat steel plate 80 into a product shape. In the roll forming machine 20, a plurality of roll units 21 including an upper roll 22 and a lower roll 23 are arranged along the flow direction of the steel plate 80. In these roll units 21, a gap for sandwiching the steel plate 80 is formed between the upper roll 22 and the lower roll 23. And this gap is changing from the linear shape which is the cross-sectional shape of a flat plate to the shape which approaches the cross-sectional shape of a product as it goes to the roll unit 21 on the downstream side from the upstream roll unit 21. As a result, the flat steel plate 80 that has entered the most upstream roll unit 21 is gradually processed into a product shape as it is sandwiched by the downstream roll unit 21. And the steel plate 80 which came out of the roll unit 21 of the most downstream side becomes the cross-sectional shape of the product 81 which the cross-sectional shape mentions later.

  The cutting machine 30 is disposed on the downstream side of the roll forming machine 20. The steel plate 80 having the cross-sectional shape of the product 81 is cut into a predetermined length by the cutting machine 30, and the product 81 is completed. On the downstream side of the cutting machine 30, a stock conveyor 40 corresponding to the measurement stage for inspection of the present invention is provided. The stock conveyor 40 is provided with a plurality of rollers 41 that rotate about the rotational axis along the short direction of the stock conveyor 40, and these rollers 41 are arranged at predetermined intervals in the longitudinal direction of the stock conveyor 40. Has been. For this reason, the product 81 sent out from the cutting machine 30 is carried into the stock conveyor 40 and placed on the roller 41 so that the longitudinal direction thereof is along the longitudinal direction of the stock conveyor 40. The product 81 placed on the roller 41 is inspected for bending and warping, and then sent to the loading / conveying unit 60 provided on the downstream side of the stock conveyor 40. The loading / conveying unit 60, after loading a predetermined number of products 81, conveys these products 81 to a downstream process.

(Stock conveyor details)
Next, details of the stock conveyor will be described.

  FIG. 2 is a configuration diagram illustrating the stock conveyor according to Embodiment 1 of the present invention. FIG. 3 is a perspective view showing a support mechanism provided in the stock conveyor. FIG. 3 shows the support mechanism as seen from the right side in FIG. FIG. 3A is a perspective view showing the support mechanism in a state where the moving mechanism and the mounting table are lowered, and FIG. 3B is a perspective view showing the support mechanism in a state where the moving mechanism and the mounting table are raised. FIG. 3A and 3B also show a state where the mounting table has moved.

  As shown in FIG. 2, the stock conveyor 40 includes a base table 42, and the above-described roller 41 is rotatably provided on the base table 42. The base table 42 is provided with a plurality of support mechanisms 50 at predetermined intervals in the longitudinal direction of the stock conveyor 40 (that is, the longitudinal direction of the base table 42). These support mechanisms 50 are provided at positions between the rollers 41 in plan view. Each of the support mechanisms 50 includes a height adjusting mechanism 51, a moving mechanism 55, and a mounting table 58.

  The height adjustment mechanism 51 includes a height adjustment mechanism base portion 52 attached to the base table 42 of the stock conveyor 40 and a cylinder 53 attached to the height adjustment mechanism base portion 52. Specifically, a base block 53 a of a cylinder 53 is attached to the height adjustment mechanism base portion 52. The movable portion 53b of the cylinder 53 is movable in the vertical direction. A moving mechanism 55 is attached to the upper end of the movable portion 53b. In the cylinder 53, the movable portion 53b moves in the vertical direction by, for example, hydraulic pressure or air pressure. That is, the height adjusting mechanism 51 is configured to be able to raise and lower the moving mechanism 55 and the mounting table 58 provided on the upper portion of the height adjusting mechanism 51 by, for example, hydraulic pressure or air pressure. The cylinder 53 is provided with a guide 54 that slides in the base block 53a together with the movable portion 53b in order to prevent the movable portion 53b and the moving mechanism 55 from falling down. The guide 54 increases the structural rigidity in order to prevent fluctuations such as shaking during sliding of the movable portion 53b as much as possible. Of course, the guide 54 may be provided separately from the cylinder 53.

  The moving mechanism 55 includes a moving mechanism base 56, a rail 57a, and a block 57b. The movable mechanism base portion 56 has a movable portion 53b of a cylinder 53 attached to the lower surface portion thereof, and a rail 57a attached to the upper surface portion thereof. The rail 57 a is attached to the upper surface portion of the moving mechanism base portion 56 so that the longitudinal direction thereof is along the short direction of the stock conveyor 40. And the block 57b is provided in the upper part of the rail 57a so that the movement to the longitudinal direction (namely, short direction of the stock conveyor 40) of the said rail 57a is possible. Between the rail 57a and the block 57b, a plurality of spherical rolling elements (not shown) are disposed that roll between the blocks 57b when the block 57b moves on the rail 57a. Therefore, the block 57b can move on the rail 57a with a slight resistance.

A mounting table 58 is attached to an upper portion of the block 57b of the moving mechanism 55. The mounting table 58 is for mounting the product 81 on the upper surface. In the first embodiment, in order to prevent the mounted product 81 from being damaged, the upper surface portion of the mounting table 58 is formed of the resin member 58a.
In the first embodiment, the height adjustment mechanism 51 of each support mechanism 50 is provided with a stopper (not shown) for adjusting the rising position of the movable portion 53b of the cylinder 53. Then, by adjusting these stoppers, each support mechanism 50 is adjusted such that the height of the upper surface when the mounting table 58 is raised is substantially on the same plane. Of course, each height adjustment mechanism 51 itself may be provided with an electronic control mechanism capable of setting the height individually or as a whole.

In each support mechanism 50 according to the first embodiment, a measuring device 59 is provided on the moving mechanism base 56 of the moving mechanism 55. These measuring devices 59 are, for example, non-contact type measuring devices (laser type measuring device, ultrasonic type measuring device, eddy current type measuring device (a high frequency current is caused to flow through a coil inside the measuring device to generate a high frequency magnetic field). Measuring the distance to the measurement object based on the impedance of the coil that changes due to the eddy current flowing in the measurement object due to the magnetic field)), and the distance from the measurement device 59 to the product 81 (more specifically, The distance in the short direction of the stock conveyor 40) is measured. That is, the stock conveyor 40 according to the first embodiment is provided with a plurality of measuring devices 59 along the longitudinal direction of the stock conveyor 40, and the bending and warping of the product 81 are obtained from the measurement results of each measuring device 59. It has a configuration that can.
The installation position of the measuring device 59 is not limited to the moving mechanism base portion 56 of the moving mechanism 55. The measuring device 59 only needs to be installed at a position that does not interfere with the product 81 carried on the stock conveyor 40, and may be installed, for example, on the height adjustment mechanism base portion 52 of the support mechanism 50, or the stock conveyor 40 base stands 42 may be installed. Further, the number of measurement devices 59 installed is not necessarily the same as the number of support mechanisms 50. If at least three measuring devices 59 are provided along the longitudinal direction of the stock conveyor 40, the bending and warping of the product 81 can be obtained.

  In the first embodiment, each measuring device 59 is electrically connected to a storage device 90 (for example, a RAM of a PC). That is, in the first embodiment, the measurement result of each measuring device 59 is automatically taken into the storage device 90.

(Description of operation)
Then, operation | movement of the stock conveyor 40 which concerns on this Embodiment 1 is demonstrated.
When the product 81 is carried from the cutting machine 30 to the stock conveyor 40, the movable portion 53b of the cylinder 53 of the height adjusting mechanism 51 is lowered, and the moving mechanism 55 and the mounting table 58 are lowered. Thereby, as shown in FIG. 2A, the upper surface portion of the mounting table 58 is disposed below the upper portion of the roller 41. In this state, the stock conveyor 40 performs the same operation as the conventional stock conveyor 40. Therefore, the product 81 sent out from the cutting machine 30 is carried into the stock conveyor 40 and placed on the roller 41 so that the longitudinal direction thereof is along the longitudinal direction of the stock conveyor 40.

  Here, when the product 81 is carried into the stock conveyor 40, a load for bending the product 81 acts on the product 81. When the product 81 is bent by the bending load at the time of carrying in, the product 81 has an elastic force against the bending load at the time of carrying in, and the product 81 is formed at the time of product formation (when it is cut by the cutting machine 30). ) To return to the bent state. At this time, in order for the product 81 to be in a bent state at the time of product formation against the bending load at the time of carrying in, the product 81 is short on the roller 41 (the short direction of the product 81 and the stock conveyor 40). You need to slip and correct your posture. However, in order for the product 81 to correct its own posture, the elastic force of the product 81 needs to exceed the frictional resistance generated between the product 81 and the roller 41. For this reason, when the length in the longitudinal direction of the product 81 becomes a certain length or more (that is, when the product 81 becomes long), the elastic force of the product 81 causes friction generated between the product 81 and the roller 41. The product 81 falls below the resistance, and the product 81 cannot slide on the roller 41 to return to the bent state during product formation. Therefore, when the length of the product 81 in the longitudinal direction is a certain length or more, the product 81 is not bent by the bending load at the time of loading when the moving mechanism 55 and the mounting table 58 of the support mechanism 50 are lowered. In this state, it is placed on the roller 41.

  When inspecting the product 81 placed on the roller 41, the movable portion 53b of the cylinder 53 of the height adjusting mechanism 51 is raised, and the moving mechanism 55 and the placing table 58 are raised. Thereby, as shown in FIG. 2B, the upper surface portion of the mounting table 58 is disposed above the upper portion of the roller 41. For this reason, the product 81 is lifted by each support mechanism 50 and placed on the placement table 58. At this time, as described above, the block 57b of the support mechanism 50 is configured to be able to move on the rail 57a with a slight resistance. For this reason, the length in the longitudinal direction of the product 81 is a certain length or more, and the elastic force of the product 81 is less than the frictional resistance generated between the product 81 and the mounting table 58. Also, the mounting table 58 can move in the short direction (the short direction of the product 81 and the stock conveyor 40) by the elastic force of the product 81. Therefore, the product 81 can return to the bent state at the time of product formation. That is, by measuring the amount of bending of the product 81 with the measuring device 59 in this state, the amount of bending of the product 81 can be measured more accurately than before.

  When measuring the amount of warping of the product 81, the moving mechanism 55 and the mounting table 58 are lowered once, and the product 81 is rotated 90 degrees on the roller 41. Thereafter, the moving mechanism 55 and the mounting table 58 are raised again, and the amount of warpage of the product 81 is measured by the measuring device 59. By setting the product 81 on the mounting table 58 of the support mechanism 50, the bending generated when the product 81 is rotated by 90 degrees is eliminated, and the amount of warpage of the product 81 is measured more accurately than before. be able to.

(inspection result)
The measurement results when the bending of the product 81 is measured using the stock conveyor 40 according to the first embodiment will be shown below.

FIG. 4 is an explanatory diagram for explaining a measurement result when the bending of the product is measured using the stock conveyor according to Embodiment 1 of the present invention. Specifically, FIG. 4A is a perspective view showing the shape of a product used for bending measurement. Moreover, FIG.4 (b) is a figure which shows the measurement result at the time of performing the bending measurement of a product using the stock conveyor which concerns on Embodiment 1 of this invention.
This measurement result is obtained by measuring the bending amount of the end A of the product 81 shown in FIG. In addition, six products 81 shown in FIG. 4A were prepared, and bending measurement was performed on each of the products 81. In addition, in FIG.4 (b), the measurement result at the time of measuring the bending of the product 81 using the conventional stock conveyor is also shown as a comparative example ("measurement by a prior art" in the figure). The measurement result shown as “measurement by the prior art” shows that the product 81 sent from the cutting machine 30 is placed on the conventional stock conveyor, and the bending of the product 81 is measured according to the first embodiment. This is measured with the device 59.

  As shown in FIG. 4A, for example, a product 81 formed of a stainless steel plate (SUS301) having a thickness t = 3 mm is a long product having a length in the longitudinal direction of 23 m. For this reason, the product 81 placed on the conventional stock conveyor is bent due to a bending load acting when the product 81 is carried into the stock conveyor. For this reason, as shown in FIG.4 (b), the bending amount of the product 81 mounted on the conventional stock conveyor will depend on the bending load which acts at the time of carrying in, and all the products 81 will be 23 mm. ing.

On the other hand, the product 81 carried into the stock conveyor 40 according to the first embodiment from the cutting machine 30 is lifted by the support mechanism 50 and placed on the placing table 58, so that the product 81 along with the placing table 58 is short direction. The product 81 and the stock conveyor 40 can be moved in the short direction. That is, the product 81 can return to the bent state at the time of product formation. For this reason, as shown in FIG.4 (b), the bending amount of each product 81 becomes a different value, respectively.
As can be seen from FIG. 4B, in the product 81 having the shape shown in FIG. 4A, by measuring the bending of the product 81 using the stock conveyor 40 according to the first embodiment, the average is obtained. An improvement effect of 38% (measurement error was reduced) was obtained.

  As described above, in the stock conveyor 40 configured as in the first embodiment, by placing the product 81 on the mounting table 58 of the support mechanism 50, the bending of the product 81 that occurs when the product 81 is carried into the stock conveyor 40. Further, it is possible to eliminate the warpage and return the bent state and the warped state of the product 81 to the state when the product is formed. Therefore, the bending and warping of the product 81 can be measured more accurately than before, and whether or not the bending and warping of the product 81 is within an allowable value can be inspected more accurately than before.

  Further, in the first embodiment, since the bending and warping of the product 81 are measured using the measuring device 59, it is not necessary to use a water thread as in the prior art, so that the bending and warping of the product 81 is less than conventional. Can be measured more accurately, and the bending and warping of the product 81 can be inspected more accurately than before.

  In the first embodiment, the measurement result of each measurement device 59 is automatically taken into the storage device 90, so that the operation of manually inputting the measurement result to the storage device 90 is not required, and the work efficiency is improved. Will improve. It is also possible to prevent erroneous input of measurement results and erroneous determination due to the erroneous input.

  Further, the product 81 can be prevented from being damaged by forming the upper surface portion of the mounting table 58 with the resin member 58 a softer than the product 81.

In the first embodiment, by using the rail 57a and the block 57b for the moving mechanism 55, the mounting table 58 can be moved with a slight resistance. That is, in the first embodiment, by adopting a rolling bearing structure using a spherical rolling element for the moving mechanism 55, the mounting table 58 can be moved with a slight resistance. However, as long as the mounting table 58 can move with a slight resistance, it is needless to say that a moving bearing 55 other than a rolling bearing structure using a spherical rolling element may be employed.
For example, as shown in FIG. 5A, a rolling bearing structure using a roller-like rolling element 57c may be adopted for the moving mechanism 55.
Further, for example, as shown in FIG. 5B, at least one of the lower surface of the moving mechanism base 56 and the mounting table 58 of the moving mechanism 55 is a member having a low sliding resistance (for example, an alloy impregnated with resin or oil). The sliding portion 57d may be formed between the moving mechanism base portion 56 of the moving mechanism 55 and the lower surface portion of the mounting table 58.
Further, for example, as shown in FIG. 5C, the moving mechanism base portion 56 of the moving mechanism 55 and the lower surface portion of the mounting table 58 are formed by magnets having the same magnetic pole (SS pole, NN pole). Further, a gap 57e may be formed between the two by the magnetic repulsive action so that the mounting table 58 can move on the moving mechanism base 56 without contact. Even when the moving mechanism base portion 56 of the moving mechanism 55 and the lower surface portion of the mounting table 58 are not formed of magnets, by supplying air between them, a gap 57e is formed between them, and the mounting table 58 is formed. Can move on the moving mechanism base portion 56 in a non-contact manner.
Further, for example, as shown in FIG. 5 (d), a moving mechanism 55 may be provided on the roller 41 itself of the stock conveyor 40. In detail, the roller 41 is comprised by two members of the roller outer peripheral part 41a which comprises the outer peripheral part of the roller 41, and the rotating shaft part 41b provided in the inner peripheral side of this roller outer peripheral part 41a. A shaped rolling element 57c may be provided. With this configuration, the roller outer peripheral portion 41 a functions as the mounting table 58, and the rotating shaft portion 41 b and the rolling element 57 c function as the moving mechanism 55. In this case, it is not necessary to lift the product 81 from the roller 41 during the inspection, so that the height adjustment mechanism 51 of the support mechanism 50 is not necessary. On the other hand, by providing the moving mechanism 55 outside the roller 41, the stock conveyor 40 according to the first embodiment can be configured by attaching the support mechanism 50 to an existing stock conveyor.

  In the first embodiment, the support mechanism 50 is provided between the rollers 41. However, the configuration is not necessarily limited to this configuration. If the product 81 is supported by the mounting table 58 of the support mechanism 50 and the bending generated in the member 81 at the time of carrying into the stock conveyor 40 can be eliminated, the installation interval of the support mechanism 50 is arbitrary.

  In the first embodiment, the cylinder 53 is employed as the height adjustment mechanism 51 of the support mechanism 50. That is, the moving mechanism 55 and the mounting table 58 are moved up and down by the cylinder 53. The configuration for moving the mounting table 58 up and down is not limited to the cylinder 53. For example, various linear motion actuators such as a linear motion actuator using a motor (configured by a ball screw, a nut attached to the ball screw, a motor for driving the ball screw, or the like) can be employed.

  In the first embodiment, the moving mechanism 55 and the mounting table 58 are provided above the height adjusting mechanism 51. However, the height adjusting mechanism 51 is provided above the moving mechanism 55, and this height adjusting mechanism. A mounting table 58 may be provided on the upper part of 51.

  In the first embodiment, a non-contact type measuring device is used as the measuring device 59, but a contact type measuring device may be used as the measuring device 59. At this time, if the measurement device can output the measurement result, the measurement result of each measurement device 59 is automatically taken into the storage device 90, thereby eliminating the need to manually input the measurement result into the storage device 90. Thus, work efficiency is improved. It is also possible to prevent erroneous input of measurement results and erroneous determination due to the erroneous input.

  In the first embodiment, the stock conveyor 40 incorporated in the molding line 1 using the roll molding machine 20 has been described. However, the stock conveyor according to the first embodiment is applied to the molding line using a press machine or a welding machine. Of course, the conveyor 40 may be incorporated.

Embodiment 2. FIG.
In the first embodiment, the example in which the measurement stage for inspection according to the present invention is incorporated as a stock conveyor in a molding line has been described. When the measurement stage for inspection according to the present invention is arranged separately from the molding line, the measurement stage for inspection according to the present invention may be configured as follows, for example. Note that a configuration not particularly described in the second embodiment is the same as that of the first embodiment, and the same function and configuration are described using the same reference numerals.

FIG. 6 is a perspective view showing an inspection measurement stage according to Embodiment 2 of the present invention.
The inspection measurement stage 100 according to the second embodiment includes a base table 101. A plurality of support mechanisms 50 are provided on the upper surface of the base table 101 at predetermined intervals in the longitudinal direction of the measurement stage for inspection 100 (that is, the longitudinal direction of the base table 101).

  Note that the inspection measurement stage 100 according to the second embodiment has a member 81 that has been picked up and carried by a crane or the like, for example, so that the rollers provided in the stock conveyor 40 of the first embodiment are mounted. 41 is not provided. Further, since the inspection measurement stage 100 according to the second embodiment does not have the roller 41, the support mechanism 50 according to the second embodiment has a height adjustment mechanism for moving the mounting table 58 above and below the roller 41. 51 is not provided.

  When measuring the bending and warping of the product 81 using the inspection measuring stage 100 configured as described above, the bending and warping are measured as follows.

  Specifically, the product 81 is manufactured at a place different from the measurement stage 100 for inspection. For this reason, belts, hooks, and the like are hung on a plurality of locations (a plurality of locations along the longitudinal direction) of the product 81, and the product 81 is carried to the inspection measurement stage 100 while being lifted by a crane.

  Here, in a state in which the product 81 is lifted, the product 81 is bent by its own weight, with an engagement portion such as a belt or a hook serving as a fulcrum. For this reason, when the product 81 is placed on a conventional inspection measuring stage in this state, the elastic force of the product 81 and the product 81 is inspected when the length of the product 81 is a certain length or more. Therefore, the product 81 is less than the frictional resistance generated between the product measurement stage and the product 81 cannot slide on the test measurement stage and return to the bent state when the product is formed.

  However, the support mechanism 50 according to the second embodiment is configured such that the mounting table 58 can move with a slight resistance, as in the first embodiment. For this reason, the length in the longitudinal direction of the product 81 is a certain length or more, and the elastic force of the product 81 is less than the frictional resistance generated between the product 81 and the mounting table 58. However, the mounting table 58 that does not receive frictional resistance in the short direction can move in the short direction by the elastic force of the product 81. Therefore, the product 81 can return to the bent state at the time of product formation. That is, by measuring the amount of bending of the product 81 with the measuring device 59 in this state, the amount of bending of the product 81 can be measured more accurately than before.

  When measuring the warpage amount of the product 81, the product 81 is rotated 90 degrees on the support mechanism 50, and the warpage amount of the product 81 is measured by the measuring device 59. The bending that occurs when the product 81 is rotated by 90 degrees is eliminated with the movement of the mounting table 58, and the amount of warping of the product 81 can be measured more accurately than before.

  As described above, also in the measurement stage for inspection 100 configured as in the second embodiment, the product 81 is mounted on the mounting table 58 of the support mechanism 50 as in the stock conveyor 40 of the first embodiment. The bent state and the warped state of the product 81 can be returned to the state at the time of product formation. Therefore, the bending and warping of the product 81 can be measured more accurately than before, and whether or not the bending and warping of the product 81 is within an allowable value can be inspected more accurately than before.

  DESCRIPTION OF SYMBOLS 1 Molding line, 10 Uncoiler, 20 Roll forming machine, 21 Roll unit, 22 Upper roll, 23 Lower roll, 30 Cutting machine, 40 Stock conveyor, 41 roller, 41a Roller outer peripheral part, 41b Rotating shaft part, 42 Base stand, 50 Support mechanism, 51 Height adjustment mechanism, 52 Height adjustment mechanism Base, 53 Cylinder, 53a Base block, 53b Movable part, 54 Guide, 55 Movement mechanism, 56 Movement mechanism base, 57a Rail, 57b block, 57c Roller shape Rolling element, 57d sliding part, 57e gap part, 58 mounting table, 58a resin member, 59 measuring device, 60 loading / conveying unit, 80 steel plate, 81 product, 90 storage device, 92 water thread, 100 measurement for inspection Stage, 101 base stand.

Claims (6)

When inspecting a product formed of a steel plate, an inspection measurement stage on which the product is placed,
In the longitudinal direction of the measurement stage for inspection, a plurality of support mechanisms for supporting the product are provided at predetermined intervals,
Each of the support mechanisms
A mounting table on which the product is mounted;
A moving mechanism that supports the mounting table so that the mounting table can be moved in the short direction of the measurement stage for inspection by the elastic force of the product;
An inspection measuring stage characterized by comprising: A plurality of rollers provided at predetermined intervals in the longitudinal direction;
The support mechanism is disposed between the rollers in plan view,
Each of the support mechanisms has a height in which the upper surface portion of the mounting table is disposed below the upper portion of the roller in the lowered state and the upper surface portion of the mounting table is disposed above the upper portion of the roller in the raised state. The measurement stage for inspection according to claim 1, further comprising an adjustment mechanism.   The contact type or non-contact type measuring device for measuring the distance in the short direction to the product is provided with at least three measuring devices along the longitudinal direction. Measurement stage for inspection.   4. The inspection measurement stage according to claim 3, further comprising a storage device connected to each of the measurement devices and storing a measurement result transmitted from each of the measurement devices.   The inspection measurement stage according to any one of claims 1 to 4, wherein the upper surface portion of the mounting table is formed of a resin member. A plurality of rollers provided at predetermined intervals in the longitudinal direction;
Each of the rollers is composed of a roller outer peripheral portion constituting the outer peripheral portion of the roller, and a rotating shaft portion provided on the inner peripheral side of the roller outer peripheral portion,
The roller outer peripheral portion is provided so as to be movable in the short direction by the elastic force of the product with respect to the rotating shaft portion,
The measurement stage for inspection according to claim 1, wherein the roller outer peripheral portion serves as the mounting table.

Images