JPH0443776Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Purpose of invention]

(Industrial field of application) This invention can be used, for example, to measure the color tone and film thickness of a workpiece whose surface has been electrolytically colored, or to measure the color tone and film thickness of a workpiece whose surface has been painted. The present invention relates to a surface condition measuring device for a processed object, which is used to measure coating film thickness and the like. (Prior Art) For example, when coloring the surface of a workpiece by electrolytic coloring, it is necessary to perform color matching during the electrolytic coloring so that a predetermined color tone can be obtained. Since ancient times, colors have been matched by the naked eye. However, since color matching work with the naked eye relies on the senses of the operator, errors are likely to occur and the workability is not very good. Therefore, a method of using one of the processing conditions such as current density and potential difference during electrolytic coloring treatment as a guide to the coloring state without looking at the naked eye (Japanese Patent Application Laid-Open No. 1983-1993)
−109236, JP-A-53-67642, JP-A-58-
3994, JP-A No. 59-177395), and a method in which the projector and receiver are hooked onto the object to be treated or installed outside the electrolytic treatment tank (JP-A-53-166488, JP-A No. 57-171693), etc. were developed. (Problem to be solved by the invention) However, even if one of the electrolytic treatment conditions is used as a guideline for the coloring state, the coloring state may differ depending on other processing conditions. There was a problem in that it was difficult to perform stable and accurate measurements. In addition, a method in which the emitter and receiver are hooked onto the workpiece has extremely poor workability, and a method in which the emitter and receiver are installed outside the surface treatment tank reduces the amount of light from the emitter. There were problems such as not being able to properly irradiate the object to be treated and the attenuation being large. (Purpose of the invention) This invention was made in view of the conventional problems mentioned above, and is to measure the surface condition such as color tone and film thickness of the workpiece with high precision and with good reproducibility. The object of the present invention is to provide an apparatus for measuring the surface condition of a processed object.

[Structure of the idea]

(Means for Solving the Problems) The device for measuring the surface condition of a workpiece according to this invention is installed at the top of a surface treatment tank, and comes into contact with one side of the workpiece pulled up from the surface treatment tank. a surface condition measuring device having a surface condition measuring head equipped with a pressing section that can move forward and backward with respect to the object to be treated; The present invention is characterized in that it is equipped with a workpiece support machine that is movable forward and backward in the same direction as the measurement head and rotatable around the forward and backward direction at a position beyond the workpiece. (Function) The device for measuring the surface condition of a workpiece according to this invention is installed in the upper part of a surface treatment tank, and the surface state measuring head equipped with a pressing part that comes into contact with one side of the workpiece is connected to the surface condition measuring device of the workpiece. A surface condition measuring device that is movable forward and backward with respect to the object and a workpiece support machine that has a support part that comes into contact with the opposite surface of the workpiece are arranged in parallel, and the support part that the support machine has is capable of moving forward and backward in the same direction as the measurement head, and is rotatable about the forward and backward direction at a position beyond the object to be treated, and presses the pressing portion against the object to be treated that has been pulled up from the surface treatment tank. The surface condition measuring head equipped with the head is advanced to come into contact with one side of the object to be treated, and at the same time, the support section is advanced to a position beyond the object to be treated, and then rotated around the forward and backward direction. If the object is moved and retreated appropriately, the object to be processed will be supported by the pressing section and the supporting section. With this workpiece being supported, the surface state of the workpiece, such as color tone and film thickness, is measured with high accuracy by the surface state measurement head. (Embodiment) FIG. 1 shows an embodiment of the surface state measuring device for a workpiece according to this invention.
0. Of these, the surface condition measuring device 20 is equipped with a pressure cylinder 2 which is a driving means for moving the measuring head forward and backward, and this pressure cylinder 2 has a coupling ring 21 and a bracket 22 attached to the tip of its piston rod 2a. The bracket 22 is connected to a measuring head support 24, which is a surface condition measuring head in this embodiment and has a color difference meter head 23 at its tip. It also serves as a pressing part. This pressure cylinder 2 has a forward and backward stroke that allows the color difference meter head 23 to come into contact with the object to be surface treated. The color difference meter head 23 is
The reflected light from the object to be processed is inputted, transmitted through the optical fiber cable 25 and inputted to the light receiving section main body 26, and the data processor 27 discriminates the color tone. Further, the workpiece support device 30 has drive means for advancing and retracting the support portion and drive means for rotation, but in this case, both means are not limited to those having separate configurations. In this embodiment, the motor 3, which is a driving means for advancing and retracting the support part, is connected to the substrate 3 by a gear meshing system.
The rod 32 is rotatably supported by a bearing 33 on the base plate 31, and one end of a support part 34 is fixed to the tip of the rod 32. The portion 34 is fixed eccentrically with respect to the center of rotation of the rod 32. This motor 3 is designed to give the substrate 31 and the rod 32 a forward and backward stroke that allows the support section 34 to be advanced to a position beyond the position of the object to be processed. Furthermore, this rod 32 is driven by a rotary actuator 4, which is a driving means for rotating the branch part.
The support part 34 is rotated back and forth within a range of 90 degrees, and thereby the support portion 34 is also rotated within a range of 90 degrees.
Therefore, the support section 34 supports the color difference meter head 2.
It can freely move forward and backward in the same direction as No. 3, and can rotate around the forward and backward direction at a position beyond the object to be processed. Next, a method of measuring the surface condition of a workpiece using this surface condition measuring device 1 will be explained. Here, we will introduce a surface treatment line for aluminum alloy shaped materials as shown in Figure 2 (progressing in the direction of arrow X).
The surface condition measuring device (in this case, the brightness measuring device) 1 is applied to the surface treatment line shown in FIG. 2, that is, the washing tank 1.
1, preliminary tank 12, coloring tank A 13, coloring tank B 14,
In the washing tank 15 and the washing tank 16, the coloring tank B 14
It is installed at the inspection site 17 between the and the washing tank 15. In other words, the surface condition measuring device 1 has a coloring tank B
The coloring tank 14 is installed on the top of the coloring tank 14, and measurements are taken on the objects to be treated that have been pulled up from the colored tank 14. During the electrolytic coloring process, as shown in FIG. The color difference meter head 23, the support part 34, etc. move forward and backward in a direction perpendicular to the longitudinal direction of the color difference meter 51. First, as shown in FIG. 4a, the support part 34, whose one end is fixed in an eccentric state, is in an upward position, and the carrier bar 51 further moves upward in the direction of arrow A. After this carrier bar 51 further moves upward and stops at a predetermined position, as shown in FIG. The bearing 33 and the support part 34 advance together, and the support part 34 advances in the direction of arrow B until it passes the position of the object to be processed 52, and then stops. Next, as shown in FIG. 4c, the rotary actuator 4 rotates forward by 90 degrees, and the support portion 34 simultaneously rotates by 90 degrees in the direction of arrow C via the rod 32. Next, the motor 3 is driven to rotate in the reverse direction, causing the motor 33, the rotary actuator 4, the substrate 31, the rod 32, the bearing 33, and the support part 34 to retreat, so that the support part 34 is covered, as shown in FIG. 4d. It is made to retreat in the direction of arrow D to a position where it contacts the object to be processed 52. Next, the pressure cylinder 2 is driven to push out the piston rod 2a in the direction of arrow E in FIG. 34 and the color difference meter head (pressing section) 23, the reflected light from the object to be processed 52 is input to the color difference meter head 23, and the optical fiber cable 2
5, the light is received by the light receiving unit main body 26,
The data processor 27 discriminates the color tone. Thereafter, as shown in FIG. 4f, the pressure cylinder 2 is retracted to move the color difference meter head 23 backward in the direction of arrow F, and the motor 3 is driven to rotate forward, as shown in FIG. 4g. , the support part 34 is advanced in the direction of arrow G to its forward movement limit position, and the workpiece 5 is
2, and then rotate the rotary actuator 4 in the opposite direction by 90 degrees to simultaneously rotate the support part 34 by 90 degrees in the direction of arrow H, as shown in FIG. 4h.
Rotate. Subsequently, the motor 3 is driven to rotate in reverse, and the motor 3, rotary actuator 4, board 31,
The rod 32, support part 34, etc. are moved back together in the direction of arrow I in FIG. 4i, and the carrier bar 51 is lowered in the direction of arrow J as shown in FIG. 4j. The color tone measurement of the object to be processed 52 is completed according to the procedure shown in FIGS. 4a to 4j, but
The color tone measurement results output by the data processor 27 are input to the computer, and the computer calculates the formula (sec) using the brightness L data, and calculates the subsequent energization time (Tsec) from the energization time setting standard. Calculate and display the calculated energization time (Tsec) using an appropriate display means (CRT, LC, EL, etc.)
At the same time as indicated by , the rectifier is supplied to the rectifier operation panel, the rectifier is operated for the required energization time (Tsec), electrolytic coloring is performed in the electrolytic coloring tank 14 for the above time (Tsec), and then the carrier bar 51 is raised again. Thereafter, the color tone measurement is performed again in the manner shown in FIGS. 4a to 4j. In addition, in the embodiment described above, the surface condition measuring device 2
Although the measuring head 23 portion of the measuring head 23 also serves as a pressing portion for the workpiece 52, the measuring head portion and the pressing portion may be separate.

[Effect of the idea]

As explained above, the device for measuring the surface condition of a workpiece according to this invention can quickly measure the surface condition of a workpiece pulled up from a surface treatment tank during the flow of the surface treatment process. I can,
In addition to improving the workability of measurement, when the surface state of the workpiece is measured by the surface state measurement head, the workpiece is supported between the measurement head and the support section. It is possible to measure the surface condition of the workpiece stably and reliably, and the measurement head, pressing part, and support part can all be moved forward and backward, and are retracted when not measuring. As a result, there are no bumps when loading and unloading the workpiece, and work can be carried out smoothly.It also prevents a decrease in productivity on the surface treatment line, and allows the work to be carried out smoothly. It is possible to measure surface conditions such as the color tone and film thickness of objects with high precision and with good reproducibility, and it has extremely excellent effects such as contributing to the full automation of surface treatment processes. .

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the device for measuring the surface condition of a workpiece according to this invention, and FIG. 2 shows an example of a surface treatment line in which the device for measuring the surface condition shown in FIG. 1 is installed. FIG. 3 is a schematic plan view, and FIG. 3 is a side view showing the positional relationship between the surface condition measuring device shown in FIG. FIG. 2 is an explanatory diagram showing a slope sequentially showing how to measure the color tone of a workpiece using the surface condition measuring device shown in the figure. DESCRIPTION OF SYMBOLS 1...Surface condition measuring device for the object to be treated, 2...Pressure cylinder (driving means for advancing and retracting the measurement head), 3
...Motor (driving means for advancing and retracting the support part), 4...
Rotary actuator (driving means for rotating the support part, 20... Surface condition measuring device, 23... Color difference meter head (surface condition measuring head), 30... Workpiece support device, 34... Support part, 52 ...The object to be processed.

Claims (1)

[Scope of utility model registration request] A surface condition measuring head that is installed at the upper part of a surface treatment tank and has a surface condition measuring head that is provided with a pressing part that comes into contact with one side of the object to be treated that has been pulled up from the surface treatment tank, and that is movable toward and away from the object to be treated. machine and
A support part that is arranged in parallel with the measuring machine and comes into contact with the opposite surface of the object to be processed is movable in the same direction as the measuring head, and is rotatable about the direction of movement at a position beyond the object to be processed. What is claimed is: 1. A device for measuring the surface condition of a workpiece, characterized in that it is equipped with a workpiece supporting device.