JP2015105429A - Surface inspection device for deposition metal plate and classification system for deposition metal plate and cathode plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surface inspection device for a deposition metal plate and a classification system for a deposition metal plate and a defective cathode plate, capable of determining size and number of particles adhered to the deposition metal plate such as a pure copper plate, a ratio of the deposition metal plate per area efficiently in a short time, and further inspecting, determining, and classifying the deposition metal plate one by one.SOLUTION: A surface inspection device for a deposition metal plate comprises: a transport device 14; inspection means 12A, 12B; peeling means for peeling deposition metal plates 4, 4 from a cathode plate 2; and classification means for classifying the deposition metal plate 4. The peeling means is disposed on a downstream side of the inspection means 12A, 12B, and the inspection means 12A, 12B comprise: a laser 20; a 3D camera 22; a 2D camera 24; and control means 30 for determining grade of the deposition metal plate as a product, and determining degree of damage to a defective cathode plate and an insulator, and further comprise a classification device in a post-process of the peeling means, and the defective cathode plate is transported outside of a system.

Description

  The present invention more efficiently detects the size of grain copper adhering or growing on the surface of the deposited metal plate lifted from the electrolytic cell, the area occupied by the plurality of grain copper, the difference in hue due to the adhesion of impurities, and the like. After that, it is possible to efficiently sort the deposited metal plate as a product according to the quality, and detect the deformation of the cathode plate, damage to the insulator, etc., and sort the defective cathode plate. The present invention relates to a deposited metal plate surface inspection apparatus, and a deposited metal plate sorting and cathode plate sorting system.

  For example, electrolytic refining of copper is performed by depositing pure copper plates 4 (hereinafter also simply referred to as copper plates 4) on both surfaces of a cathode plate 2 made of stainless steel by electrolysis, for example, as shown in FIG. (For example, refer to Patent Document 1).

  Then, the stainless steel cathode plate 2 in which the pure copper plate 4 is deposited on both sides of the cathode plate 2 other than the insulator 3 provided on both sides of the cathode plate 2 is lifted from the electrolytic cell when a certain weight is reached. As shown in FIG. 5, the pure copper plate 4 deposited on both surfaces of the cathode plate 2 as a mother plate is stripped off by a stripper 9 such as a scraper. Then, it is placed in a lying posture on the conveyor 6 as shown in FIG. 6, and then transferred onto another conveyor 8 by a transfer device (not shown), and a plurality of sheets are transferred on the conveyor 8. The pure copper plate 4 is loaded at one place as one mountain, and further, the next loading is performed after moving a predetermined distance, and finally about 30 pure copper plates 4 are stacked as one mountain. .

In addition, the weight of the pure copper plate 4 stacked in this way is about 40 to 100 kg, and it cannot be easily held.
By the way, in the electrolytic refining of copper, whether or not pure copper is deposited in a normal state on the cathode plate 2 is peeled off one by one by a stripper 9 such as a scraper as shown in FIG. Then, after about 30 pure copper plates 4 are stacked, an operator visually inspects them. Then, it is judged that all the peaks that are visually inspected have the same quality, and graded products.

JP 2009-215598 A

  However, the visual inspection and determination for grading such products depends on the proficiency level of the worker, physical condition, and the difference in sense among different workers, etc. There was a problem of being.

  In addition, the same set of mountains may contain deposited metal plates with different qualities, but in visual surface inspection and judgment, for example, one set of mountains has a low grade product. If it is determined that it is contained, all the mountains are shipped as a low grade, so there is a problem that a high grade product is treated as a low grade product.

In addition, there was a problem that sufficient inspection could not be performed because the vicinity of the center of one set of mountains could not be seen by surface inspection.
Furthermore, conventionally, since the surface inspection and determination are performed offline, there is a problem that inspection and determination take time.

  When the cathode plate 2 is deformed in the process of being lifted from the electrolytic cell and transported by a transport device such as a crane or a conveyor (not shown), or the insulator 3 provided on both sides of the cathode plate 2 is damaged, There was a problem that it was not possible to remove in a peeling process (not shown), and the entire apparatus (not shown) stopped and it took a long time to restart. Further, the cathode plate 2 in which the deformation or damage to the insulator 3 is caused is returned to the electrolytic cell again by a transfer device (not shown), and when it is reused, the same problem is repeated again, and the time required for the work is greatly increased. There was a problem of growth.

  In view of such circumstances, the present invention is the difference in hue due to the size of the granular copper adhering to the deposited metal plate such as a pure copper plate, the number of granular copper, the ratio per area of the deposited metal plate, and the amount of adhering matter. Can be efficiently performed in a short time for all the deposited metal plates, and further, by accurately performing the inspection and judgment of each sheet, the deposited metal plates can be matched to the contents one by one. It is an object of the present invention to provide a deposited metal plate surface inspection apparatus and a deposited metal plate / cathode plate sorting system that can detect cathode plate deformation and insulation damage at the same time.

In order to achieve the above object, a surface inspection apparatus for a deposited metal plate according to the present invention is
A transport device for continuously transporting the cathode plate;
Inspection means for photographing the surface of the deposited metal plate deposited on both sides of the cathode plate;
Peeling means for peeling the deposited metal plate deposited on both sides of the cathode plate from the cathode plate;
And a sorting means for sorting the deposited metal plate peeled based on the inspection result,
The peeling means and the sorting means are disposed downstream of the inspection means in the transport device,
The inspection means includes
A laser arranged to move up and down;
A 3D camera that moves up and down with the laser;
On the side of the deposited metal plate, a 2D camera fixedly installed at a predetermined height;
Using the photographed image of the deposited metal plate photographed by the 3D camera or the 2D camera, the size of the grain copper existing on the surface of the deposited metal plate, the number of the grain copper, the deposited metal plate of the grain copper The distribution ratio per area, the difference in hue due to the adhesion of impurities, etc. are calculated, the calculated size of grain copper, the number of grain copper, the distribution ratio of the grain copper to the area of the deposited metal plate, due to the adhesion of impurities Control means for determining the grade of the deposited metal plate as a product according to a difference in hue, etc., and a control means for detecting and determining deformation of the cathode plate and damage to the insulator,
Based on the inspection results, the sorting means sorts the sheets one by one, detects the cathode plate deformation or damage to the insulator, and passes it out of the system without exercising the peeling means. It is a feature.

  According to such a surface inspection apparatus, surface inspection of the deposited metal plate, separation of the deposited metal plate, or subsequent graded deposition of the deposited metal plate one by one, and defective cathode plates are taken out of the system. Since this is continuously and automatically performed on all the deposited metal plates, the processing time can be shortened. In addition, the determination result does not vary depending on the skill level of the operator.

  Further, in the present invention, the laser is arranged so that its optical axis is perpendicular to the surface of the deposited metal plate, and the 3D camera can photograph the irradiation part from the laser obliquely. It is preferable that they are arranged in an inclined posture with respect to the surface of the deposited metal plate.

With such a configuration, the entire surface can be accurately inspected.
In the deposited metal plate sorting system according to the present invention,
An inspection unit for photographing and inspecting the surface of the deposited metal plate deposited on both sides of the cathode plate one by one;
A peeling portion for peeling the deposited metal plate deposited on both surfaces of the cathode plate;
A sorting unit that sorts the deposited metal plate separated from the cathode plate for each grade based on the inspection result by the inspection unit, and is arranged in this order on a transport device that transports the cathode plate,
After inspecting the quality of the deposited metal plate one by one by the inspection unit, the deposited metal plate is separated from both surfaces of the cathode plate by the peeling unit, and then the separated deposited metal plate is inspected. Based on the inspection result in the section, the sorting section sorts the sheets one by one for each grade.

  According to such a sorting system, the surface of the deposited metal plate can be inspected, the deposited metal plate can be peeled off, the grade of each deposited metal plate can be classified, and the defective cathode plate can be sorted continuously at high speed. .

Further, the cathode plate sorting system according to the present invention includes:
An inspection unit for photographing and inspecting the surface of the deposited metal plate deposited on both sides of the cathode plate one by one;
A peeling portion for peeling the deposited metal plate deposited on both surfaces of the cathode plate;
A sorting unit that sorts the deposited metal plate separated from the cathode plate for each grade based on the inspection result by the inspection unit, and is arranged in this order on a transport device that transports the cathode plate,
After inspecting the quality of the deposited metal plate one by one in the inspection part, if there is deformation of the cathode plate or damage to the insulator, the cathode plate is passed through without being peeled off at the peeling part, It is characterized by not being carried out of the system and returned to the electrolytic cell.

  According to such a cathode plate sorting system, a cathode plate in which deformation or damage to an insulator has occurred is not returned to the electrolytic cell and reused.

  According to the present invention, the size of the grain copper, which is a judgment criterion of the product, the number of grain copper, the ratio per area of the deposited metal plate of grain copper, the hue difference due to the adhesion of impurities, etc. are automatically inspected, It can be automatically determined, and it can detect the deformation of the cathode plate and damage to the insulator, so it is accurate regardless of the level of proficiency, physical condition, and feeling of the operator, and all the deposited metal plates Inspection and judgment can be performed at high speed.

  Furthermore, according to the deposited metal plate sorting system according to the present invention, the appropriate grade classification of the deposited metal plate can be performed automatically and continuously one by one, so that the processing time can be shortened. In addition, the deposited metal plates that meet the actual product quality can be shipped as a group.

  Further, according to the cathode plate sorting system according to the present invention, after the defective cathode plate is passed through without being peeled off at the stripping portion, it is continuously driven without being stopped by carrying it out of the system. Thus, the working time can be shortened, and the defective cathode plate can be prevented from being returned to the electrolytic cell and reused.

FIG. 1 is a schematic view showing a deposited metal plate inspection apparatus according to an embodiment of the present invention. FIG. 2 is a side view of the main part shown in FIG. FIG. 3 is a process diagram showing the procedure of the deposited metal plate inspection system according to one embodiment of the present invention. FIG. 4 is a perspective view showing an example of a conventional cathode plate. FIG. 5 is a schematic side view in the case where a deposited metal plate deposited on both surfaces of a conventional cathode plate is peeled off by a stripper. FIG. 6 is a schematic view of a conveying means for conveying the deposited metal plate separated one by one.

Hereinafter, a deposited metal plate inspection apparatus, a deposited metal plate sorting system, and a cathode plate sorting system according to the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view showing a surface inspection apparatus 10 for a deposited metal plate according to one embodiment of the present invention.

  This surface inspection apparatus 10 is applied to an inspection apparatus for a pure copper plate 4 deposited by electrolytic refining of copper as in the case of FIGS. 4 to 6 referred to as the conventional example. Therefore, in the following description, it is assumed that the deposited metal plate is the copper plate 4.

  The surface inspection apparatus 10 continuously performs an operation of stripping the copper plates 4 and 4 on both sides of the cathode plate 2 and sorting the stripped copper plates 4 one by one according to the actual quality. It is incorporated in the middle of the processing line.

  That is, the conveying device 14 such as the conveyor chain shown in FIG. 1 is continuously formed from the upstream side (right side in FIG. 1) toward the downstream side (left side in FIG. 1). (Left side of the drawing) includes a stripping machine for the deposited metal plate, a sorting device for the separated deposited metal plate, and the like.

  Thus, in the inspection apparatus 10 arranged in the middle of the continuous processing line, the cathode plate 2 in which two pairs of copper plates 4 of about 40 to 100 kg are electrodeposited on both sides is provided, for example, a conveyor chain or the like. Are continuously transported in a state of being placed on the transport device 14. Then, the cathode plate 2 that has reached a predetermined inspection position in the inspection apparatus 10 stays at the inspection position for a short time, and the surface inspection of the pair of pure copper plates 4 deposited on both sides of the cathode plate 2 is performed respectively. Done automatically. Then, the inspection result of each copper plate 4 is supplied to the control means 30 and stored in the control means 30 as shown in FIG.

  In addition, the cathode plate 2 after the surface inspection as described later in the inspection apparatus 10 is completed is conveyed in the direction of arrow B in FIG. The cathode plate 2 conveyed in the direction of arrow B is stripped of the pure copper plates 4 and 4 on both sides by a stripper (not shown) on the downstream side of the position where the surface inspection is performed.

  The cathode plate 2 from which the pure copper plate 4 has been stripped off by the stripper is further transported in the direction of arrow B, transported by a transport device such as a conveyor or a crane (not shown), and returned to the electrolytic cell. Further, a defective cathode plate in which the cathode plate 2 is deformed or the insulator 3 is damaged is not removed by a stripping machine and is carried out of the system with a deposited metal plate attached.

The stripper may be, for example, a stripper disclosed in Patent Document 1, but is not particularly limited.
FIG. 2 is a schematic side view showing the inspection means 12A and 12B provided on both sides of the cathode plate 2 at the inspection position in the inspection apparatus 10. These inspection means 12A and 12B have the same configuration.

  In FIG. 1, when it is detected that the cathode plate 2 has been transported to the inspection position by being placed on a conveyor device 14 such as a conveyor chain, the hanger bar 5 of the cathode plate 2 and the lower end of the cathode plate 2 Are respectively held by a fixing device (not shown) so as not to swing. In this way, the upper and lower end portions of the cathode plate 2 are clamped by a fixing device (not shown) so that the cathode plate 2 cannot swing in the thickness direction.

As illustrated in FIG. 2, the inspection units 12 </ b> A and 12 </ b> B include a support member 16 that is fixed in a standing posture and an auxiliary member 18 that is held on the upper side of the support member 16.
Further, a bracket member 19 that is movable in the vertical direction is attached to the auxiliary member 18. A laser 20 and a 3D camera 22 are provided in the bracket member 19 movable in the vertical direction. The auxiliary member 18 accommodates a feeding device for moving the bracket member 19.

The laser 20 is arranged so that its optical axis is perpendicular to the surface of the copper plate 4.
On the other hand, the 3D camera 22 disposed above the laser 20 is disposed in an inclined posture with respect to the surface of the copper plate 4 so that the irradiation part A from the laser 20 can be photographed obliquely from above. The laser 20 and the 3D camera 22 may be arranged upside down.

A 2D camera 24 is installed on the support member 16 so as not to prevent the vertical movement of the bracket member 19 that can move up and down.
In this specification, a 3D camera refers to a camera that can capture a 3D image, and a 2D camera refers to a camera that can capture a 2D image. The 3D camera 22 can photograph the depth of the concave portion and the height of the convex portion when the copper plate 4 is uneven. The 2D camera can capture the entire area, hue, and the like. In addition, in the 2D camera, in addition to measuring the dimensions and hue of the cathode plate 2, the cathode plate 2 serving as an electrode is not broken or deformed, is the insulation broken, or is not dropped? Can also be examined.

  In the present embodiment, the captured images taken by the 3D camera 22 and the 2D camera 24 are output to the control means 30 such as a computer and stored therein. Information such as abnormality of the cathode plate 2 is also stored here.

  The control means 30 receives a two-dimensional or three-dimensional photographed image of the copper plate 4 and presents the presence of grain copper, the size of the grain copper generated, the number of grain copper, and the area per area of the deposited metal plate of grain copper. It is possible to detect distribution ratio, hue difference due to adhesion of impurities, cathode plate deformation and insulator damage. After calculating these, the grade of copper plate 4 is automatically determined based on the preset grade judgment Can be determined.

  In addition, the size of the grain copper used as the reference for the set grade judgment, the number of the reference grain copper, the distribution ratio of the reference grain copper per area of the deposited metal plate, the difference in hue due to the adhesion of impurities, etc. Can be arbitrarily set according to the user's request. For example, the particle size of 7 mm or more can be used as impurity particles, and the particle size of 10 mm or more can be used as impurity particles. Thus, the reference value is arbitrary. Similarly, the number of particles exceeding 7 mm may be counted and the total number used for the determination result of grade classification, or the number of particles exceeding 10 mm may be counted and used for the determination of grade classification. it can.

  Then, after these inspections are completed, the cathode plate 2 is transported in the direction of arrow B in FIG. 1 from the inspection position. At the same time, the next cathode plate 2 is supplied to the inspection position.

  The cathode plate 2 that has been inspected and transported in the direction of arrow B is then transported to a stripping machine (not shown) as disclosed in Patent Document 1, and the stripping machine has copper plates 4 on both sides. 4 is stripped off as in FIG.

  In addition, when it turns out that the deformation | transformation of the cathode plate 2 before the copper plates 4 and 4 of both sides are peeled, or the damage of the insulator has arisen, and there are many granular coppers which exist on the surface of the deposit metal plate 4, it is a product. If it is determined that the product cannot be shipped, the drive of the stripper can be controlled so that the stripper is not stripped off even if it is transported to the stripper. The determination can be made based on the photographing result of the 2D camera 24 or the 3D camera 22 described above.

In this way, it is possible to prevent the non-standard copper plates 4 and 4 from being repeatedly deposited due to the abnormal shape of the cathode plate in the next electrolysis.
In addition, a large number of peeled copper plates 4, 4,... 4 are separated by, for example, a sorting device arranged on the downstream side of the stripping machine, for example, “Yu no Yama”, “Shi no Yama”, “Kane no Yama”. For example, if about 30 sheets are sorted, it is possible to ship the deposited metal plate to the customer with the content that the product has been correctly evaluated.

  As described above, in the surface inspection apparatus according to the present invention, since it is possible to automatically perform the determination for confirming the grain copper or the subsequent grade classification that has been performed by visual inspection until now, the inspection or The time until the determination can be made as short as possible. In addition, inspection, determination, and grading can be performed one by one, not as a group of about 30 sheets.

In addition, these inspections and determinations are not affected by the skill level, physical condition, feeling, etc. of the worker.
In addition, according to the deposited metal plate sorting system according to the present invention, the deposited metal plate lifted from the electrolytic cell is deposited on the conveying device 14 such as a continuous conveyor chain as shown in FIG. The surface of 4 is photographed and inspected one by one (inspection process), and is peeled off one by one by a stripping machine 9 (peeling process). The cathode plate can be sorted (sorting step) by the sorting device, the cathode plate after the stripping (peeling step) is finished, is returned to the electrolytic cell, and the defective cathode plate can be carried out of the system.

  According to such a sorting system, instead of performing inspections and determinations by human visual inspection, the inspections and determinations are automatically performed and automatically classified as “excellent”, “excellent”, “possible”, etc. It becomes possible to ship the defective cathode plate out of the system.

2 Cathode plate 3 Insulator 4 Pure copper plate (deposition)
5 Hanger part 6 Conveyor 8 Another conveyor 9 Peeling machine (peeling means)
10 Inspection devices 12A, 12B Inspection means 14 Conveyance device (conveyor chain)
16 Support member 18 Auxiliary member 19 Bracket member 20 Laser 22 3D camera 24 2D camera 30 Control means A Irradiation unit

Claims (4)

A transport device for continuously transporting the cathode plate;
Inspection means for photographing the surface of the deposited metal plate deposited on both sides of the cathode plate;
Peeling means for peeling the deposited metal plate deposited on both sides of the cathode plate from the cathode plate;
And a sorting means for sorting the deposited metal plate peeled based on the inspection result,
The peeling means and the sorting means are disposed downstream of the inspection means in the transport device,
The inspection means includes
A laser arranged to move up and down;
A 3D camera that moves up and down with the laser;
On the side of the deposited metal plate, a 2D camera fixedly installed at a predetermined height;
Using the photographed image of the deposited metal plate photographed by the 3D camera or the 2D camera, the size of the grain copper existing on the surface of the deposited metal plate, the number of the grain copper, the deposited metal plate of the grain copper Calculate the distribution ratio per area, the difference in hue due to the adhesion of impurities, etc., the calculated size of grain copper, the number of grain copper, the distribution ratio per area of the deposited metal plate of the grain copper, the adhesion of impurities A control means for determining the grade of the deposited metal plate as a product according to a difference in hue due to, and a control means for detecting and determining deformation of the cathode plate and damage to the insulator,
Based on the inspection results, the sorting means sorts the grades one by one, detects deformation of the cathode plate or damage to the insulator, and passes through the peeling means to be taken out of the system. Deposited metal plate sorting system.   The laser is arranged such that its optical axis is perpendicular to the surface of the deposited metal plate, and the 3D camera can photograph the irradiated portion from the laser obliquely from the surface of the deposited metal plate. An apparatus for inspecting a surface of a deposited metal plate, wherein the surface inspection apparatus is disposed in a posture inclined with respect to the surface. An inspection unit for photographing and inspecting the surface of the deposited metal plate deposited on both sides of the cathode plate one by one;
A peeling portion for peeling the deposited metal plate deposited on both surfaces of the cathode plate;
A sorting unit that sorts the deposited metal plate separated from the cathode plate for each grade based on the inspection result by the inspection unit, and is arranged in this order on a transport device that transports the cathode plate,
After inspecting the quality of the deposited metal plate one by one by the inspection unit, the deposited metal plate is separated from both surfaces of the cathode plate by the peeling unit, and then the separated deposited metal plate is inspected. A sorting system for deposited metal sheets, wherein the sorting unit sorts the sheets one by one on the basis of the inspection result at the section. An inspection unit for photographing and inspecting the surface of the deposited metal plate deposited on both sides of the cathode plate one by one;
A peeling portion for peeling the deposited metal plate deposited on both surfaces of the cathode plate;
A sorting unit that sorts the deposited metal plate separated from the cathode plate for each grade based on the inspection result by the inspection unit, and is arranged in this order on a transport device that transports the cathode plate,
After the inspection unit inspects the quality of the deposited metal plate one by one, if the cathode plate is deformed or the insulator is damaged, the cathode plate passes through the peeling unit and is taken out of the system. The cathode plate sorting system is characterized in that it is not returned to the electrolytic cell.

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