JP4863390B2 - Inspection device for power feeding device in elevator type plating equipment - Google Patents

Description

  The present invention relates to an inspection apparatus for a power feeding device in an elevator type plating apparatus for inspecting an energization state of a power feeding apparatus that feeds power to a hanger provided in the elevator type plating apparatus.

  Elevator type plating equipment is constructed by attaching a large number of columnar carriers to an endless chain spanned between large sprockets on both sides of the apparatus, and these columnar carriers are traversed all along the treatment tank group. The rack support hanger attached to each columnar carrier is moved up and down at a necessary place, and the rack is sequentially immersed in each processing tank. The workpiece is suspended on a rack supported by a hanger, and when it moves to the next treatment tank, it moves in a raised position, and when it is continuously immersed in the same treatment tank, it moves in a constant manner at a lowered position. The plating is automatically performed during one round of the route as shown in FIG.

  In electrolytic baths such as plating baths, when the hanger is lowered, the power supply brush attached to the hanger comes into contact with the power supply bus bar provided in the vicinity of the bath to power the work, and the power supply brush is pressed against the power supply bus bar. A mechanism is provided. However, the power supply brush, especially in the plating tank, may be traversed at the position where the hanger descends, so it is inevitable that the power supply brush will wear during use, and the mechanism that presses the power supply brush against the power supply bus bar is deformed, Wires such as connected cables and braided copper wires may corrode and break. In such a case, power supply is not normally performed, and a plating failure occurs due to a poor adhesion in a pretreatment bath such as electrolytic degreasing and a plating thickness shortage in a plating bath.

  In order to avoid the occurrence of plating defects, it is necessary to normally maintain the power supply device including the power supply brush and the pressing mechanism of the power supply brush and the conductive wire connected to the power supply brush so that power supply is performed reliably. Since the elevator-type plating apparatus has a large number of columnar carriers, it takes an enormous amount of time, so that the actual maintenance of the hangers and the power supply apparatus is not performed. For this reason, the power feeding device is repaired only after the occurrence of plating failure, and there is a problem that the occurrence of plating failure is unavoidable.

  In order to avoid the occurrence of plating defects, an inspection device for inspecting the power supply device is installed, and the power supply device that detects abnormalities due to wear and deformation of the power supply brush, disconnection of the connected conductors, etc. is equipped. It is only necessary to temporarily stop the use of the hanger and repair it collectively when the plating apparatus is stopped. This is convenient because it is not necessary to perform regular maintenance of the power supply apparatus, and it is not necessary to suspend the plating apparatus for repair. Although there are few apparatuses that perform an energization inspection in a plating apparatus, an apparatus that is disclosed in Patent Document 1 is known as an apparatus that performs an energization inspection of a plating jig.

This Patent Document 1 is connected to a power feeding unit, a current-carrying plate connected to the power-feeding unit, and a conductive layer formed on an upper surface of a target object to be plated, In a plating jig energization inspection device for confirming energization of a plating jig having a plurality of energizers that can be contacted and separated from the plate, first energization inspection means for inspecting energization between the power feeding portion and the energizing plate. And a second energization inspection means for inspecting the energization between the power supply unit and the energization body, and a third energization inspection means for inspecting the energization between the energization bodies. However, such a configuration cannot be applied to a power supply apparatus having a sliding portion such as a power supply brush, and an apparatus for inspecting such a power supply apparatus has not been put to practical use until now.
Japanese Patent Laid-Open No. 2005-2407

  The present invention has been made to solve the above-described problems and to provide a power feeding device inspection device in an elevator type plating apparatus that individually inspects the energization state of the power feeding device provided in each hanger.

  In order to solve the above-mentioned problem, the invention of claim 1 is directed to an elevator type plating apparatus for supplying power by holding a power supply hanger on a columnar carrier so as to be movable up and down. As the inspection position, when the hanger is lowered to the inspection position, the inspection power supply bar is provided at a position where the power supply brush of the power supply device provided on the hanger contacts and the auxiliary power supply brush provided on the hanger contacts In addition, a voltage between the inspection power supply bar and the inspection power supply column measured by passing a constant current between the power supply device and the inspection power supply bar is provided. Is provided with a voltage relay that outputs a signal when the value exceeds a set value.

  According to another aspect of the present invention, there is provided an elevator-type plating apparatus that feeds power by holding a power hanger on a columnar carrier so as to be movable up and down. The inspection power supply bar is provided at a position where the power supply brush of the power supply device provided on the hanger contacts when the hanger descends to the inspection position with the position as the inspection position. A contact for connecting each of the current dividers to each of the portions of the inspection power supply bar divided as the same number as that of the number of each of the current dividing points is provided, and a contact point for individually selecting a detection signal of each current divider is provided. A constant current is passed between the power supply device and the inspection power supply bar, the detection signal of the shunt selected by the contact is measured, and when the voltage exceeds the set value, the signal is It is characterized in the provision of the voltage relay to force. In the invention of claim 1 or 2, it is preferable that the inspection position is an electrolytic cell in which electrolysis is first performed.

  According to the first aspect of the present invention, when the hanger is at the lower limit at the inspection position, a constant current is passed between the power supply device and the inspection power supply bar from the power supply device, and between the inspection power supply bar and the inspection power supply column. A voltage relay is provided to output a signal when the voltage exceeds the set value and the contact between the power supply brush and the inspection power supply bar is poor, or the conductor connected to the power supply brush In the case of corrosion, the electric resistance increases and a large voltage drop occurs, which is measured through the auxiliary power supply brush and the inspection power supply column, and there is an advantage that a power supply failure of the power supply device can be detected reliably.

  Further, the invention of claim 2 corresponds to the case where a plurality of power supply devices are provided on the hanger, and the inspection power supply bar which the power supply brush contacts when the hanger is at the lower limit at the inspection position is provided for the power supply device. Dividing into the same number as the number and connecting the shunt to each part of the divided inspection power supply bar, providing a contact for individually selecting the detection signal of each shunt, from the power supply device to the power supply device and the inspection power supply A voltage relay is provided to output a signal when a constant current flows between the bar and the detection signal of the shunt selected by the contact and the voltage exceeds a set value. If there is something in the power supply device that makes it difficult for the current to flow due to poor contact between the power supply brush and the inspection power supply bar or corrosion of the conductors connected to the power supply brush, overcurrent will flow through the sound power supply device. That. As a result, the detection signal of the shunt connected to the healthy power supply device becomes large, and it can be detected that there is a power supply device with poor conduction.

  Further, according to the invention of claim 3, since the inspection position for inspecting the power supply device is an electrolytic cell such as electrolytic degreasing where electrolysis is first performed, when the hanger is at the lower limit, the power supply device and the power supply bar During this period, a current from the power supply device for the original electrolytic treatment flows. As a result, it is not necessary to connect the power supply device to the inspection power supply device for inspection or to provide a separate power supply device for inspection, and since the inspection is performed with a current of a capacity for actually performing the electrolytic treatment, There is an advantage of excellent reliability.

  Hangers that have been determined to have an abnormality in the power feeding device can be used afterwards and the operation of the plating equipment can be continued and repaired together when the plating equipment is stopped. There is an advantage in that it is not necessary to pause the plating apparatus. In addition, if the number of the hanger is recorded, it can be repaired efficiently, and when the work is washed with water, the hanger is held in the raised position by the latch mechanism, and if the subsequent processing is interrupted, the work Since it is not immersed in a chemical tank or a plating tank, the workpiece is not damaged and can be processed again to be a product.

Next, the best mode for carrying out the present invention will be specifically described with reference to the drawings.
FIG. 1 shows a configuration of an inspection device for a power feeding device in an elevator-type plating apparatus according to the present invention. An inspection power feeding bar with which a power feeding brush of a power feeding device comes into contact with a hanger at an inspection position, and an auxiliary power feeding brush An inspection power supply pillar that is in contact with the inspection power supply is provided. 2 and 3 show the structure of the columnar carrier, FIGS. 4 to 6 show the structure of the power feeding portion provided on the hanger, and FIG. 7 shows the entire elevator-type plating apparatus. First, these will be described.

  The structure of the elevator type plating apparatus is basically the same as that conventionally known, and an endless chain 3, 3 in which the upper and lower ends of a large number of columnar carriers 1, 1 are stretched between large sprockets 2, 2 on both sides of the apparatus. Attached at regular intervals, an elevating frame 5 of a hanger 4 is supported on each columnar carrier 1 so as to be movable up and down. Although not shown, there is provided a driving device for intermittently rotating the large sprockets 2 and 2 by a certain angle and intermittently driving the endless chains 3 and 3, and a lifting beam for raising and lowering the hanger 4 and its driving device are provided. is there. Further, a wheel 6 is attached to the lower end of the columnar carrier 1, and the wheel 6 is placed on a rail 7 provided on the machine frame so as to support the load of the columnar carrier 1.

  A latch mechanism 9 is provided at the upper portion of the columnar carrier 1 so as to be swingable about the support shaft 8. By operating the operating rod 10 of the latch mechanism 9 with the elevating frame 5 raised by the elevating beam. The locking plate 11 is moved so that the hook 12 provided on the upper part of the lifting frame 5 is locked so that the lifting frame 5 can be held at the raised position even when the lifting beam is lowered. A hanger arm 13 is provided on the front surface of the lifting frame 5 so as to face forward, and a support roller 14 supported by a lifting beam when the hanger 4 is lifted is attached to the rear part of the lifting frame 5. A rack support frame 15 is electrically insulated from the front end of the hanger arm 13 and attached to the rack support frame 15 along the hanger arm 13. A mounting plate 17 is electrically insulated and attached to the lower part of the front surface of the lifting frame 5 toward the front, and a power feeding device 18 and an auxiliary power feeding device 19 are attached to the mounting plate 17.

  The power supply device 18 is for supplying a current to the workpiece, and includes a power supply brush mounting plate 21 to which a plurality of cylindrical power supply brushes 20 and 20 are attached, and a conductive wire that connects the power supply brush mounting plate 21 and the connection bar 16. 22. The power supply brush mounting plate 21 is mounted on a guide bar 23 erected on the upper surface of the mounting plate 17 so as to be movable up and down, and the power supply brush 20 is protruded downward from a through hole 24 provided in the mounting plate 17. A spring 25 is provided between the upper end of the guide bar 23 and the power supply brush mounting plate 21 to apply a force for pressing the power supply brush 20 downward. Reference numeral 26 denotes a guide pin that regulates the rotation of the power supply brush mounting plate 21. In the illustrated example, the two power feeding devices 18 and 18 are attached to the left and right of the mounting plate 17, but may be one or three or more depending on the magnitude of the plating current.

  The auxiliary power supply device 19 is for supplying a current to the work while the hanger 4 moves up and down in the plating tank, and is composed of an auxiliary power supply brush 27 and a conductive wire 28 connecting the auxiliary power supply brush 27 and the connection bar 16. It is. The auxiliary power supply brush 27 is formed by forming a plate material into a U shape with an upper portion widened, and a base end portion is attached to the attachment plate 17. The auxiliary power supply brush 27 is bent at the upper left and right sides to form a contact portion that contacts the auxiliary power supply column, and a vertical slit is provided on the upper portion so that stable contact can be obtained. The structures of the columnar carrier 1, the hanger 4, the power feeding device 18, and the auxiliary power feeding device 19 described above are basically the same as those conventionally known, and are not limited thereto.

  In the plating tank, if the work is not energized when the work enters and exits, plating failure such as poor adhesion of the plating film to the work or discoloration of the plating surface occurs. The auxiliary power feeding device 19 is provided for supplying current to the work and preventing it while the hanger 4 is raised and lowered. At the position of the plating tank, there is an auxiliary power supply column 29 that contacts the auxiliary power supply brush 27 when the hanger 4 is raised and lowered, and a power supply bar 30 that contacts the power supply brush 20 from below and supplies power when the hanger 4 descends and reaches the lower limit. Are provided. In addition to the plating tank, an auxiliary power supply column 29 is provided at the position of the tank that needs to be energized when the work is loaded and unloaded.

  In FIG. 2, when the columnar carrier 1 traverses from right to left, the auxiliary power supply column 29 is the first in a plating tank in which the workpiece is continuously immersed in the left and right sides of the position in a single plating tank or the like. Provided on the right side of the position and on the left side of the last position. In addition, the power supply bar 30 is continuous from the first position to the last position in the plating tank in which the work is continuously immersed, and the auxiliary power supply column 29 and the power supply bar 30 are conventionally provided. It is the same.

  Thus, in the plating bath where the workpiece is traversed while being continuously immersed, the contact portion on the right side of the auxiliary power supply brush 27 is in contact with the auxiliary power supply column 29 at the first position where the workpiece enters, and the workpiece is discharged. Since there is no auxiliary power supply column up to the left side of the last position where the hanger 4 descends, there is no obstacle even if the hanger 4 descends and the contact portion on the left side of the auxiliary power supply brush 27 is located at the last position where the work comes out. Electric power is supplied in contact with the auxiliary power supply pillar 29. Further, since the power feeding bar 30 is continuous, power is continuously supplied to the work without interruption from the time when the work enters the tank to the time when the work is traversed and finished.

  The inspection position for inspecting the power feeding device 18 is set as one stop position of the columnar carrier 1, and the inspection power feeding column with which the contact portion of the auxiliary power supply brush 27 comes into contact with the inspection position when the hanger 4 descends and reaches the lower limit. 31 and an inspection power supply bar 32 that contacts the power supply brush 20 from below. The inspection power supply pillars 31 do not need to be provided on both the left and right sides, and can be only one of them. In addition, when a plurality of power supply devices 18 are attached to the hanger 4, the inspection power supply bar 32 is divided into the same number as the number of power supply devices 18 to insulate each other, and the power supply devices 18 and 18 are in contact with each other individually. Make sure you do.

  The inspection position is preferably a position where the work is first energized, such as the first electrolytic degreasing tank. In the case of an electrolytic degreasing tank, it is not necessary to energize normally when entering and exiting the workpiece, so that no auxiliary power supply pillar is provided, but the power supply bar 30 is provided as usual. When the first electrolytic degreasing is set as the inspection position, the inspection power supply bar 32 is used as the power supply bar 30. The inspection power supply bar 32 is connected to a power supply bus bar 33 connected to one pole of a power supply device (not shown) via a shunt, but when the inspection power supply bar 32 is divided into two as shown in the figure, The divided parts 32a and 32b are individually connected to the power supply bus bar 33 via the current dividers 34a and 34b, respectively. When the inspection power supply bar 32 is divided into three or more, the same number of current dividers is provided.

  Further, a voltage divider 35 is provided, and both ends of the voltage divider 35 are connected to the inspection power supply column 31 and the power supply bus bar 33, respectively. The other electrode of the power supply device is connected to the electrode in the tank as in the conventional case. The detection signals of each of the current dividers 34a, 34b and the voltage divider 35 are connected to the voltage relay 38 via relay contacts 36a, 37a, 36b, 37b and 36c, 37c, respectively, and the controller 39 connects the contacts 36a, 37a, Any one of 36b, 37b and 36c, 37c is selected by closing and input to the voltage relay 38. If there are more than two shunts, the number of contacts should be the same.

  In such a configuration, a series of ascending / descending beam raising, rotation of the large sprockets 2 and 2 at a certain angle and movement of the endless chains 3 and 3 by a certain distance, and descending of the ascending / descending beam as in the conventional elevator plating apparatus. These operations are repeated at a constant cycle, and the columnar carrier 1 traverses by a predetermined distance. As a result, the workpieces mounted on the racks supported by the hangers 4 and 4 are traversed at a position where they are raised when moving to the next processing tank and at positions where they are lowered when immersed in the same processing tank. A predetermined plating process is performed.

  At the inspection position where the power feeding device 18 is inspected, when the hanger 4 reaches the lower limit position due to the descending of the elevating beam, the contact portion of the auxiliary power feeding brush 27 contacts the power feeding pillar 31 for inspection, and the power feeding brush 20 of the power feeding device 18 is moved. The power supply bar 32 for inspection comes into contact. When the position of the first electrolytic degreasing tank is the inspection position, the electrode, workpiece, rack, connection bar 16, lead wire 22, power supply device 18, inspection in the electrolytic degreasing tank from the positive pole of the DC power supply for electrolytic degreasing Current flows to the negative pole of the DC power supply device through the paths of the power supply bars 32a and 32b, the current dividers 34a and 34b, and the power supply bus bar 33, and electrolytic degreasing is performed.

  At this time, if the contact between the power supply brush 20 and the inspection power supply bar 32 is bad or the conductor 22 is corroded and is broken, the voltage drop between them increases. This voltage is applied to the voltage divider 35 via the conductor 28, the auxiliary power supply brush 27, and the auxiliary power supply column 29. When the control device 39 closes the contacts 36c and 37c, the detection signal of the voltage divider 35 is supplied to the voltage relay 38. Entered. If this voltage is equal to or higher than a predetermined value, the voltage relay 38 outputs a detection signal, so that a contact failure between the power supply brush 20 and the inspection power supply bar 32 or an increase in the resistance of the conductor 22 is caused. It is possible to detect that there is an abnormality.

  In the case where a plurality of power supply devices 18 are provided, even if some of the power supply devices 18 are abnormal, a current flows through the healthy power supply device 18 and a voltage drop between the power supply brush 20 and the inspection power supply bar 32. May not be large enough to be considered abnormal. In that case, the control device 39 sequentially closes the set of contacts 36a and 37a and the set of contacts 36b and 37b individually. As a result, the detection signals of the respective shunts 34 a and 34 b are sequentially input to the voltage relay 38. When there is no abnormality in all of the power supply devices 18, 18, the electrolytic current flows in a distributed manner in each of the power supply devices 18, 18, but when there is a power supply device 18 that is abnormal and does not flow, a healthy power supply device An overcurrent flows through 18. Since the voltage relay 38 outputs a detection signal if the detection signals of the shunts 34a and 34b are equal to or higher than a predetermined value set in advance, when an overcurrent flows through any one of the power supply devices 18, the voltage relay 38 detects the overcurrent. It is determined that there is an abnormality in the power supply device that does not flow.

  If it is determined that there is an abnormality in the power feeding device 18, the number of the hanger 4 is recorded, the subsequent use is stopped, and the operation of the plating device is continued. When the inspection of the power feeding device 18 is performed in the first electrolytic degreasing tank, the work mounted on the hanger 4 is degreased, and the latch mechanism 9 is operated after the subsequent water washing. The hanger 4 is traversed at the raised position. Thus, the workpiece | work which interrupted processing can be used as a product by processing again. The hangers 4 determined to have an abnormality in the power feeding device 18 are repaired together when the plating apparatus is stopped.

  As apparent from the above description, according to the first aspect of the present invention, a constant current is passed between the power supply device 18 and the inspection power supply bar 32 from the power supply device, and the voltage is measured and set to a value greater than or equal to the set value. Then, a voltage relay 38 for outputting a signal is provided, and if the power feeding device 18 has a poor conduction, the electrical resistance increases and a large voltage drop occurs, so that the poor conduction can be detected. According to the second aspect of the present invention, the number of inspection power supply bars 32 is divided into the same number as that of the plurality of power supply devices 18 and 18, and the current dividers 34a and 34b are individually connected to each of the current dividers 34a. , 34b for individually selecting detection signals 36a, 37a, 36b, 37b, and a voltage relay 38 for outputting a signal when the voltage is measured and set to a value or more. If any of 18 has an energization failure, it can be detected because the current concentrates on a healthy power supply apparatus.

It is a connection diagram which shows the structure of the inspection apparatus of the electric power feeder in the elevator type plating apparatus of this invention. It is a front view of the principal part which shows the structure of an elevator type plating apparatus. It is sectional drawing of the principal part which shows the structure of an elevator type plating apparatus. It is a front view of the principal part which shows an example of an electric power feeding part. It is a side view of the principal part which shows an example of an electric power feeding part. It is a top view of the principal part which shows an example of an electric power feeding part. It is the whole top view which shows an example of an elevator type plating apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Columnar carrier 2 Large sprocket 3 Endless chain 4 Hanger 5 Lifting frame 6 Wheel 7 Rail 8 Support shaft 9 Latch mechanism 10 Operation rod 11 Locking plate 12 Hook 13 Hanger arm 14 Support roller 15 Rack support frame 16 Connection bar 17 Mounting plate 18 Power supply device 19 Auxiliary power supply device 20 Power supply brush 21 Power supply brush mounting plate 22 Conductor wire 23 Guide rod 24 Through hole 25 Spring 26 Guide pin 27 Auxiliary power supply brush 28 Conductor wire 29 Auxiliary power supply column 30 Power supply bar 31 Inspection power supply columns 32, 32a, 32b Power supply bar for inspection 33 Power supply bus bar 34a, 34b Current divider 35 Voltage divider 36a, 36b, 36c, 37a, 37b, 37c Contact 38 Voltage relay 39 Control device

Claims (3)

In an elevator-type plating apparatus that feeds power by holding a power supply hanger on a columnar carrier so as to be movable up and down, the above-mentioned hanger is set when the hanger is lowered to this inspection position with one stop position of the above-mentioned hanger as the inspection position. An inspection power supply bar is provided at a position where the power supply brush of the power supply apparatus provided in contact with the auxiliary power supply brush provided on the hanger as described above, and an inspection power supply column provided on the hanger is provided. A voltage relay is provided that outputs a signal when the voltage between the inspection power supply bar and the inspection power supply pole measured by passing a constant current between the power supply device and the inspection power supply bar exceeds the set value. The inspection apparatus of the electric power feeder in the elevator type plating apparatus characterized by this. In an elevator-type plating apparatus that feeds power by holding a power supply hanger on a columnar carrier so as to be movable up and down, the above-mentioned hanger is set when the hanger is lowered to this inspection position with one stop position of the above-mentioned hanger as the inspection position. The inspection power supply bar is provided at a position where the power supply brush of the power supply apparatus provided on the inspection device comes into contact, and each part of the inspection power supply bar divided into the same number as the number of the power supply apparatuses Each of the current shunts is connected to each other to provide a contact for individually selecting a detection signal of each shunt, and a constant current is passed from the power supply device to the power supply device and the inspection power supply bar. A voltage relay is provided, which measures the detection signal of the shunt selected by, and outputs a signal when the voltage exceeds the set value. Inspection apparatus of the power supply system in the device. 3. The inspection apparatus for a power feeding apparatus in an elevator type plating apparatus according to claim 1, wherein the inspection position is an electrolytic cell in which electrolysis is performed first.

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