JP5582564B2 - Electrodeposition coating equipment - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeposition coating facility for electrodepositing an electrodeposition paint on a part to be coated, and more particularly to an electrodeposition coating facility for electrodeposition coating an electrodeposition paint on a buckle part used for a seat belt of a vehicle or the like. .

  A base, a latch, a pin, and the like constituting a buckle of a seat belt in a vehicle or the like include a sliding portion for inserting a tongue. These sliding portions are required to have predetermined coating film strength and lubricity, and are required to have water repellency with respect to soft drinks brought in by the driver. An epoxy resin-based paint has been mainly used as a paint used for painting the sliding portion of the buckle. As a method for applying these paints, air spray coating, dip spin coating, immersion coating, and the like have been used.

  Dip coating is the best way to paint expensive paint with minimal loss, but the buckle has small holes for assembly, punch holes for weight reduction, and so on. However, there was a problem that the coating film stretched in the holes due to the surface tension of the paint. In addition, as a countermeasure, even if the surface tension of the paint is lowered or air spray coating is used, there are not a few similar problems, and there is a problem that the work process, work time, work cost, etc. increase. .

  As means for solving such a problem, for example, an electrodeposition coating apparatus as described in Patent Document 1 has been proposed. The electrodeposition coating apparatus described in Patent Document 1 circulates an electrodeposition paint (paint and solvent) using a nozzle in an electrodeposition tank, and causes the parts to be coated (objects to be coated) to flow through the electrodeposition paint. Apply electrodeposition while moving in the opposite direction.

JP 2004-285411 A

  However, the part to be applied applied to the electrodeposition coating apparatus described in Patent Document 1 is a heavy article such as a vehicle, and when a light article such as a buckle is applied to the part to be coated, the part to be coated is electrodeposited. When immersed in the paint, there is a problem that the part to be coated becomes unstable and it is difficult to perform good electrodeposition coating.

  The present invention has been developed in view of the above-described problems, and an object of the present invention is to provide an electrodeposition coating facility capable of performing good electrodeposition coating in a state where a part to be coated is stabilized.

According to the present invention, in an electrodeposition coating facility for electrodeposition-coating an electrodeposition paint containing an insoluble substance on a part to be coated, an electrodeposition tank for storing the electrodeposition paint, and the electrodeposition paint in the electrodeposition tank A discharge nozzle that circulates the component, a component hanger that suspends the component to be coated, and a component that moves to oppose the direction in which the electrodeposition paint flows while maintaining the state in which the component to be painted is immersed in the electrodeposition paint a moving mechanism, wherein the component energizing mechanism for energizing said to be painted parts move the predetermined section to be coated part by the component moving mechanism, Bei example, said insoluble material, a fluororesin powder or molybdenum disulfide There is provided an electrodeposition coating facility characterized by that.

  The component energizing mechanism may include an energizing bar for passing an electric current to the component hanger, and the component moving mechanism may cause the component to be coated to move only the predetermined section and then contact the energizing bar.

  The component moving mechanism repeatedly moves and stops the component to be painted, and the component energizing mechanism starts energizing the component to be painted when a predetermined time has elapsed since the component to be painted has stopped, It may be repeated to stop energization when starts moving.

  You may provide the coating material peeling apparatus which peels off the said electrodeposition coating material on the said component hanger adhering with the electrodeposition coating to the said to-be-coated part.

  The paint peeling device has, for example, a tool for peeling the electrodeposition paint on the component hanger, a motor for rotating the tool, and a sliding mechanism for moving the tool along the shape of the component hanger. .

  You may provide the electricity supply test | inspection apparatus which test | inspects whether the said component hanger which peeled the said electrodeposition coating material supplies with the said coating material peeling apparatus.

  The energization inspection device has, for example, a current collector that can be locked to the component hanger, and is configured to determine whether or not to energize based on whether or not a current flowing through the current collector is equal to or greater than a predetermined threshold. May be.

Also, the electrodeposition coating material, for example, a cationic electrodeposition paint comprising an epoxy-based cationic resins.

  According to the above-described electrodeposition coating equipment according to the present invention, the part to be coated is immersed in the electrodeposition tank and moved for a predetermined section, and then energized. Electrodeposition coating can be performed in a state where the parts to be coated are stable and the shaking is small, coating defects can be reduced, and good electrodeposition coating can be performed.

  Also, by placing the energizing bar in the component energization mechanism, it is easy to apply the part to be painted by moving the part to be painted by a predetermined section (for example, the section of the non-energized bar) and then bringing the part hanger into contact with the energizing bar. A current can be passed through.

  In addition, the component energization mechanism repeats the process of energizing the part to be painted when a predetermined time has elapsed since the part to be painted stopped and stopping energization when the part to be painted moves. It is possible to prevent energization during movement, suppress the occurrence of sparks, and perform good electrodeposition coating.

  In addition, by arranging the paint peeling device, the electrodeposition paint attached to the component hanger can be efficiently peeled off, and it is possible to prevent the current from flowing to the part to be coated when the component hanger is reused. Even when the parts hanger is reused, good electrodeposition coating can be performed.

  Furthermore, by constituting the paint peeling device with a cutting tool, a motor, and a sliding mechanism, the electrodeposition paint adhered to the component hanger can be efficiently peeled off.

  In addition, by arranging an energization inspection device, it is possible to detect a component hanger that is not energized, avoid reuse, and reduce coating defects.

  Furthermore, by arranging the current collector in the current-carrying inspection device, it is possible to easily inspect whether or not the component hanger is energized simply by engaging the current collector with the component hanger and passing a current. It is possible to easily determine whether or not the current flows, and it is possible to eliminate a component hanger that is not energized efficiently.

  Further, by selecting fluororesin powder or molybdenum disulfide as the insoluble substance, it is possible to impart predetermined functions such as lubricity and water repellency to the coating film. Further, for example, even when a material having a large specific gravity, such as molybdenum disulfide, is mixed with the electrodeposition paint, according to the present invention, the electrodeposition paint can be circulated with a fast water flow, And sedimentation can be suppressed, and good electrodeposition coating can be performed.

  Further, by using a cationic electrodeposition paint containing an epoxy cationic resin as an electrodeposition paint, a coating film excellent in strength, adhesion, and corrosion resistance can be easily formed.

It is a schematic diagram for demonstrating the circulation of the electrodeposition coating material in the electrodeposition coating equipment which concerns on embodiment of this invention. It is a top view of the electrodeposition tank in the electrodeposition coating equipment which concerns on embodiment of this invention. It is a schematic diagram for demonstrating the component electricity supply mechanism in the electrodeposition coating equipment which concerns on embodiment of this invention. It is a schematic diagram which shows the transfer state of the component hanger which suspended the to-be-painted component. It is a figure which shows the voltage which a components electricity supply mechanism applies between an electricity supply bar and a bottom part electrode. It is a schematic diagram of a paint peeling apparatus, (A) is a front view, (B) is a top view. It is a schematic diagram of an electric current inspection apparatus, (A) is a front view, (B) is a top view.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5. Here, FIG. 1 is a schematic diagram for explaining the circulation of the electrodeposition paint in the electrodeposition coating equipment according to the embodiment of the present invention. FIG. 2 is a top view of the electrodeposition tank in the electrodeposition coating facility according to the embodiment of the present invention. FIG. 3 is a schematic diagram for explaining a component energization mechanism in the electrodeposition coating facility according to the embodiment of the present invention. FIG. 4 is a schematic diagram showing a transfer state of a component hanger on which a component to be painted is suspended. In FIG. 1, the component energization mechanism is not shown.

  An electrodeposition coating equipment 1 according to the present embodiment is an electrodeposition coating equipment 1 for electrodeposition-coating an electrodeposition paint containing an insoluble substance on a part 2 to be coated, and an electrodeposition tank 3 for accommodating the electrodeposition paint, The discharge nozzle 4 that circulates the electrodeposition paint in the electrodeposition tank 3, the component hanger 5 that suspends the part 2 to be coated, and the direction in which the electrodeposition paint flows while the part 2 to be coated is immersed in the electrodeposition paint A component moving mechanism 6 for moving the component to be painted, and a component energizing mechanism 7 for energizing the component to be painted 2 after the component moving mechanism 6 moves through a predetermined section by the component moving mechanism 6.

  The electrodeposition paint is a cationic electrodeposition paint containing an epoxy-based cationic resin depending on the application, and, for example, fluororesin powder or molybdenum disulfide is mixed as an insoluble substance. For example, PTFE (polytetrafluoroethylene) resin powder is used as the fluororesin powder. The electrodeposition paint may be mixed with a coloring pigment, or a so-called anion electrodeposition paint may be used. The insoluble substance mixed in the electrodeposition paint is not limited to those described above, and can be appropriately selected according to the function required for the coating film formed on the part to be coated 2.

  Molybdenum disulfide plays a role of reducing the frictional resistance of the coating film formed on the part to be coated 2 and imparting lubricity. Moreover, PTFE resin powder plays the role which provides water repellency while providing lubricity to the coating film formed in the to-be-coated part 2. By mixing these molybdenum disulfide and PTFE resin powder into the cationic electrodeposition paint, a remarkable low frictional resistance can be realized by its synergistic effect. Therefore, such an electrodeposition paint has a sliding part such as a base, a latch, a pin, etc. constituting a buckle of a seat belt, and forms a coating film on a part where moisture may adhere. Is suitable. The PTFE resin powder and molybdenum disulfide are blended in the cationic electrodeposition paint so as to provide, for example, lubricity with a friction coefficient of 0.2 μs or less and water repellency with a water repellency contact angle of 94 ° or more.

  The epoxy cation resin is blended, for example, so as to satisfy the conditions of breaking stress 160 to 370 kgf / cm, elongation 1.4 to 3.2%, and pencil hardness H to 2H. By this blending, an excellent breaking stress and elongation can be exhibited, and the coating film can be prevented from breaking due to friction.

  The part 2 to be coated is a part made of a light iron material, such as a part constituting a buckle of a seat belt. Here, the light weight means a weight that causes shaking when the part 2 to be coated is immersed in the electrodeposition tank 3. The part to be coated 2 is preliminarily formed with a zinc phosphate coating before starting electrodeposition coating. The part to be coated 2 is not limited to an iron material, and may be any part as long as it is a material that can be electrodeposition coated.

  The electrodeposition tank 3 is a container for storing an electrodeposition paint. As shown in FIGS. 1 and 2, the electrodeposition tank 3 has a box shape that is long in the moving direction of the component 2 to be painted. An overflow tank 31 is formed on the front side of the electrodeposition tank 3 so that the electrodeposition paint overflowing from the electrodeposition tank 3 can be collected. A pump 32 is connected to the electrodeposition tank 3 and the overflow tank 31 so that the electrodeposition paint in the electrodeposition tank 3 and the overflow tank 31 can be sucked. And the to-be-coated part 2 immersed in the electrodeposition tank 3 is electrodeposition-coated in the electrodeposition tank 3, and CED (Cathodic Electrodeposition Coating: Cathode electric coating film) is formed on a zinc phosphate film.

  As shown in FIG. 1, the discharge nozzle 4 discharges the electrodeposition paint sucked by the pump 32 into the electrodeposition tank 3 while adjusting the discharge ratio of the valves Vb-1 and Vb-2. It has a function to circulate. For example, as shown in FIGS. 1 and 2, the discharge nozzles 4 are arranged in three rows at the bottom of the electrodeposition tank 3 in parallel to the longitudinal direction. At this time, the front discharge nozzle 4 is arranged in a direction for discharging the electrodeposition paint toward the corner portion of the electrodeposition tank 3. Further, the other discharge nozzles 4 arranged in the middle part of the electrodeposition tank 3 are arranged in a direction for discharging the electrodeposition paint toward the bottom so that the electrodeposition paint flows in the direction of the arrow in FIG. By disposing the discharge nozzle 4 in this way, the electrodeposition paint can be circulated efficiently in the direction of the arrow in FIG. 1, and the components contained in the electrodeposition paint to be precipitated or settled can be stirred. The electrodeposition paint can be maintained at a substantially uniform concentration. This is particularly effective when the electrodeposition paint contains an insoluble substance having a specific gravity greater than that of the main component resin such as molybdenum disulfide. Moreover, the discharge nozzle 4 is arrange | positioned so that the flow area where an electrodeposition coating material may decelerate may be minimized according to the shape of the electrodeposition tank 3 and the component contained in an electrodeposition coating material. For example, the discharge nozzles 4 are arranged at intervals of 400 to 700 mm so as to minimize the dead angle between the discharge nozzles 4 and are adjusted so as to discharge the electrodeposition paint at a flow rate of 10 to 30 cm / second.

  Further, as shown in FIGS. 1 and 2, the discharge nozzle 41 may be disposed in the overflow tank 31. The discharge nozzle 41 discharges the electrodeposition paint sucked from the overflow tank 31 by the pump 32 to the overflow tank 31, thereby stirring the electrodeposition paint and suppressing precipitation of molybdenum disulfide and the like. In this way, by stirring the overflow tank 31, the concentration of the collected electrodeposition paint can be maintained substantially uniform, and the electrodeposition paint sucked by the pump 32 is returned to the electrodeposition tank 3. Even so, the electrodeposition paint having a substantially uniform concentration can be supplied to the electrodeposition tank 3. Moreover, since the discharge nozzle 41 should just be able to stir the inside of the overflow tank 31, a position and direction are not limited to what was illustrated. Furthermore, instead of the discharge nozzle 41, another stirring mechanism such as a stirring propeller may be employed.

  As shown in FIGS. 1 and 3, the component hanger 5 has a function of suspending a plurality of components to be coated 2 so that the components to be painted 2 can be conveyed to each coating line. Specifically, the component hanger 5 includes a component hanger body 51 having a length shorter than the lateral width of the electrodeposition tank 3, a plurality of hooks 52 disposed along the longitudinal direction of the component hanger body 51, and a component hanger. And locking portions 53 formed at both ends of the main body 51. Since both end portions of the component hanger body 51 are portions to be placed on rails or conveyor belts when the component hanger 5 is horizontally conveyed on the painting line, hooks 52 are arranged at both ends of the component hanger body 51. It is preferable not to do so. As shown in FIG. 1, the hooks 52 are arranged in parallel so that the return parts of the hooks 52 face each other outward so that the part 2 to be coated can be suspended on both surfaces of the part hanger body 51. In addition, the hooks 52 are arranged at intervals that do not come into consideration in consideration of the size, shape, weight, shaking generated during immersion, and the like of the part to be coated 2 to be suspended. As shown in FIG. 3, the locking portion 53 is a portion that engages with a hanger transfer hook 81 of the transfer device 8 when the component hanger 5 is lifted and moved on the coating line. In addition, since the current component 2 is energized via the component hanger 5, at least the component hanger body 51 and the hook 52 are made of a conductor.

  As shown in FIG. 1, the component moving mechanism 6 has a function of moving the component to be coated 2 in the moving direction of the component to be coated while being immersed in the electrodeposition coating in the electrodeposition tank 3. The component moving mechanism 6 is, for example, a slat chain conveyor disposed on the upper part of the electrodeposition paint accommodated in the electrodeposition tank 3. The component moving mechanism 6 is arranged so that the component 2 to be coated can be immersed in the electrodeposition paint while the component hanger body 51 of the component hanger 5 is supported. Further, as will be described later, the component moving mechanism 6 is configured to be able to move the component hanger 5 while repeatedly moving and stopping the electrode hanger 5 against the flow of the electrodeposition paint. The component moving mechanism 6 is not limited to the slat chain conveyor, and may be a conveying device such as a line loader as long as the component moving mechanism 6 can move while supporting the component hanger 5 and repeatedly moving and stopping. In this way, the component moving mechanism 6 moves the part to be coated 2 so as to face the direction in which the electrodeposition paint flows, so that a certain resistance can be applied to the part to be painted 2, and the part to be coated 2 Can be made difficult to shake. Therefore, it is possible to suppress the part 2 to be coated from being lifted from the contact point of the part hanger 5, and the part 2 to be coated and the part hanger 5 are relatively early after the part 2 to be coated is immersed in the electrodeposition tank 3. Can be fixed by the coating film, and lifting of the part to be coated 2 can be suppressed.

  The component energization mechanism 7 has a function of energizing the part to be painted 2 via the component hanger 5. Specifically, as shown in FIG. 3, there are a non-conductive bar 71, a conductive bar 72, and a non-conductive bar 73 that are arranged in order along the component moving mechanism 6 in the component moving direction. The non-energized bars 71 and 73 are members configured so that no current flows, and are configured by an insulator or a metal part insulated from the conductive bar 72. The energization bar 72 is configured so that a voltage can be applied to a bottom electrode (not shown) disposed at the bottom of the electrodeposition tank 3. Therefore, when the component hanger 5 is conveyed by the component moving mechanism 6 and contacts the current-carrying bar 72, a current can flow between the component 2 to be coated and the bottom electrode. At this time, the part to be coated 2 becomes a cathode and the bottom electrode becomes an anode. In this way, by configuring the component energization mechanism 7, in the section in which the component moving mechanism 6 moves the part to be painted 2, a section in which the component energization mechanism 7 does not energize the part to be painted 2 (hereinafter referred to as a non-energized section). And a section to be energized (hereinafter referred to as an energized section). The non-energized bars 71 and 73 may be omitted, and the energized bar 72 may be disposed only in the energized section.

  In this way, the component energizing mechanism 7 includes the energizing bar 72 for supplying current to the component hanger 5, and the component moving mechanism 6 moves the part to be coated 2 by a predetermined section (non-energized section) and then contacts the energizing bar 72. Therefore, it is possible to prevent the energization for a certain period of time when the part to be painted 2 is placed, the shaking generated when the part 2 to be painted has converged, and the part 2 to be coated is stable and with little shaking. Electrodeposition coating can be performed. In addition, by providing a non-energized section when leaving the part 2 to be coated, it can be prevented from being energized for a certain period of time, so that shaking generated when leaving the part 2 to be coated does not affect the electrodeposition coating. Can do. Therefore, in the current-carrying section, it is not affected by the shaking that occurs at the time of entering or leaving the tank, so that poor coating can be reduced and good electrodeposition coating can be performed.

  Here, FIG. 5 is a diagram showing a voltage applied between the energizing bar 72 and the bottom electrode by the component energizing mechanism 7. In FIG. 5, the vertical axis represents voltage (V), and the horizontal axis represents time (seconds). As shown in FIG. 5, the component energizing mechanism 7 repeatedly applies voltages of 0 (V) and α (V) between the energizing bar 72 and the bottom electrode. This is because a spark may be generated when energized while the part to be coated 2 is moving. Therefore, tact energization is performed by setting the voltage to 0 (V) when the component moving mechanism 6 moves and applying a constant voltage α (V) when stopped. For example, it is assumed that the part 2 to be coated that has moved on the energization bar 72 stops at time t1. At this time, the component energization mechanism 7 starts to gradually apply voltage at time t1, and performs soft energization so as to be α (v) at time t2. The voltage α (V) is maintained until time t3. This time t3 is also a time for resuming the movement of the part 2 to be painted. That is, the voltage is turned off simultaneously with the start of movement of the part 2 to be coated. Thereafter, the component moving mechanism 6 moves and stops the component to be coated 2 until time t4. The component energizing mechanism 7 starts applying a voltage from time t4 and applies a constant voltage α (V) from time t5 to time t6.

  In this way, the component moving mechanism 6 repeatedly moves and stops the component to be coated 2, and the component energizing mechanism 7 starts energizing the component to be coated 2 when a predetermined time has elapsed since the component to be coated 2 stops, By repeatedly stopping the energization when the painted part 2 starts to move, it is possible to prevent the energization during the movement of the part to be painted 2 and to suppress the occurrence of sparks. Electrodeposition coating can be performed. In addition, by conducting the soft energization together, the voltage can be gradually applied according to the convergence of the shaking generated when the part to be coated 2 stops moving, and the electrodeposition coating can be performed efficiently. Coating failure can be reduced.

  Moreover, as shown in FIG. 3, the component hanger 5 conveyed to the front of the electrodeposition tank 3 is transferred to the component moving mechanism 6 by the transfer device 8 shown in FIG. The transfer device 8 has a hanger transfer hook 81 that can be locked to the locking portion 53 of the component hanger 5 at the tip. When the component hanger 5 is transferred, the hanger transfer hook 81 of the transfer device 8 is arranged at a position where the hanger transfer hook 81 of the transfer device 8 can be inserted into the engaging portion 53 of the component hanger 5. After the hanger transfer hook 81 is inserted into the locking portion 53, the component hanger 5 is lifted by the transfer device 8, separated from the transport line, and placed on the component moving mechanism 6. Then, the part hanger 5 for which the electrodeposition coating has been completed is returned to the transport line by the transfer device 8 by the same operation.

  By the way, when the part to be coated 2 is suspended from the hook 52 of the part hanger 5 and energized, an electrodeposited film is generated at a portion other than the contact between the part to be coated 2 and the hook 52 immersed in the electrodeposition paint. . When the part hanger 5 that has been used once is used again for electrodeposition coating, the part 2 to be coated next is placed at a position where no electrodeposition film is formed on the hook 52 of the part hanger 5. It is not always suspended. When the part to be coated 2 is suspended at a position where the electrodeposition film is generated on the hook 52 of the part hanger 5, the part to be coated 2 cannot be energized. Therefore, every time electrodeposition coating is performed, it is necessary to peel off the electrodeposition film attached to the hook 52 of the used component hanger 5.

  Therefore, the electrodeposition coating equipment 1 includes a paint peeling device 9 for peeling the electrodeposition paint on the component hanger 5 attached along with the electrodeposition coating on the part 2 to be coated, and the paint peeling device 9 peels the electrodeposition paint. It may further comprise an energization inspection device 10 that inspects whether or not the component hanger 5 is energized. Here, FIG. 6 is a schematic view of the paint peeling apparatus 9, (A) is a front view, and (B) is a top view. FIG. 7 is a schematic view of the current-carrying inspection apparatus 10, (A) is a front view, and (B) is a top view.

  Hereinafter, an automatic detaching device (not shown) for detaching the part 2 to be coated from the component hanger 5 after the baking process, and a paint peeling device 9 for peeling the electrodeposition film attached to the hook 52 of the component hanger 5; Next, the energization inspection device 10 for determining whether or not the component hanger 5 from which the electrodeposition film has been peeled off by the paint peeling device 9 is energized will be described.

  The automatic detaching device applies a shock to the part 2 to be painted that is hung on the hook 52 of the part hanger 5 with a shock bar, lifts the part 2 to be painted from the hook 52, and swings the part hanger 5 to ± 45 °. The part to be painted 2 is dropped by inclining it. Then, the part hanger 5 from which the part to be coated 2 is removed is conveyed to the paint peeling device 9 in the next process. In addition, the worker may remove the part 2 to be coated from the component hanger 5 manually.

  As shown in FIGS. 6A and 6B, the paint peeling device 9 includes, for example, a cutting tool 91 for peeling the electrodeposition paint on the component hanger 5, a motor 92 for rotating the cutting tool 91, and a cutting tool 91. And a load adjusting mechanism 94 for pressing the tool 91 against the hook 52. A hanger fixing base 95 that supports the component hanger 5 is disposed on the paint peeling device 9. The hanger fixing base 95 is disposed at a height at which the hook 52 can come into contact with the cutting tool 91 in a state where the component hanger 5 is supported, and may be configured so that the height can be adjusted. In addition, about the support member of the hanger fixing stand 95, the figure is abbreviate | omitted.

  As the cutting tool 91, a tool having a rectangular or triangular rectangular cross section and having a U-shaped groove formed in the longitudinal direction is used. By rotating the cutting tool 91, the electrodeposited film can be cut at the corner. If the hook 52 is a round bar, the hook 52 is fitted into the U-shaped groove and the cutting tool 91 is rotated forward and backward. The electrodeposition film formed on the side surface 52 can also be easily peeled off. As the cutting tool 91, a commercially available tool can be used as long as it is a cutting tool capable of cutting a so-called chamfering hail tool or other electrodeposition film on the hook 52.

  The motor 92 is a component that rotates the cutting tool 91. As illustrated, the driving force of the motor 92 is transmitted to the cutting tool 91 by belt driving, for example. Of course, the cutting tool 91 may be directly connected to the head portion of the motor 92.

  The bite sliding mechanism 93 is a component that slides the bite 91 left and right by reciprocating the pedestal 93a supporting the bite 91 left and right by a motor (not shown). The load adjusting mechanism 94 is a component that applies a load so as to press the cutting tool 91 against the surface of the hook 52 by an elastic body 94a such as a spring. Therefore, the cutting tool 91 can be moved in accordance with the shape of the hook 52 by sliding the cutting tool 91 with the cutting tool sliding mechanism 93. Further, when the rectangular cutting tool 91 is rotated and brought into contact with the hook 52, the cutting tool 91 vibrates up and down, but this vibration is also suppressed by the load adjusting mechanism 94. In addition, the load by the elastic body 94a is transmitted to the bite 91 through the link mechanism 93b.

  The paint peeling device 9 is rotatably disposed on the support member 96. When the component hanger 5 is placed on the hanger fixing base 95, the paint hanger 5 is retracted to the outside. After being placed on 95, the hook 52 is turned inward so that the hook 52 can be cut. Further, as shown in FIG. 6B, the paint peeling device 9 is arranged in parallel on both sides of the component hanger 5 so that the plurality of hooks 52 of the component hanger 5 can be processed in a short time. Preferably it is. Furthermore, the cutting tool 91 may be arranged on both the left and right sides of the paint peeling device 9 so that the two hooks 52 can be simultaneously processed by the single paint peeling device 9. Then, after the peeling of the electrodeposition film formed on the hook 52 of the component hanger 5 is finished, the paint peeling device 9 is retracted, and the component hanger 5 is conveyed to the energization inspection device 10 in the next process.

  As shown in FIGS. 7A and 7B, the current-carrying inspection apparatus 10 includes, for example, a current collector 101 that can be locked to the component hanger 5, and the current flowing through the current collector 101 is equal to or higher than a predetermined threshold value. It is determined whether or not power is supplied depending on whether or not there is. In addition, a hanger fixing base 102 that supports the component hanger 5 is disposed on the energization inspection device 10. The hanger fixing base 102 is disposed at a height at which the current collector 101 can be locked to the hook 52 in a state where the component hanger 5 is supported, and may be configured so that the height can be adjusted. In addition, about the support member of the hanger fixed base 102, the figure is abbreviate | omitted.

  The current collector 101 is a rod-shaped energizing member having an annular portion at the tip, and is held by the holding portion 103 so that it can be energized and slidable. The holding unit 103 is rotatably disposed on the support member 104. When the component hanger 5 is placed on the hanger fixing base 102, the current collector 101 is retracted to the outside, and the component hanger 5 is moved to the hanger fixing base. After being placed on 102, it is configured to rotate inward and be arranged at a position where the current collector 101 can be locked to the hook 52. According to such a configuration, the current collector 101 can be locked to the hook 52 by moving the current collector 101 onto the hook 52 and then withdrawing the current collector 101, and the hook 52 is energized by energizing the current collector 101. Whether or not current flows can be inspected. Note that the slide function of the current collector 101 may be configured to be replaced by a mechanism that rotates the holding unit 103.

  Further, as shown in FIG. 6B, the holding unit 103 extends along the longitudinal direction of the component hanger 5, and a plurality of current collectors 101 correspond to the hooks 52 on the upper surface of the holding unit 103. It is arranged at the position to do. With this configuration, it is possible to inspect whether or not the plurality of hooks 52 included in the component hanger 5 are energized simultaneously. In addition, the energization inspection apparatus has a measuring means (not shown) connected to the current collector 101 and is configured to measure whether or not the current flowing through the current collector 101 is equal to or greater than a predetermined threshold. . If there is a current collector 101 in which a current exceeding a predetermined threshold does not flow, it is determined that the electrodeposition paint on the hook 52 is not sufficiently peeled, and the component hanger 5 is removed from the coating line. At this time, it may be displayed on a display or the like which part of the hook 52 the current does not flow. And when the electric current more than a predetermined threshold value flows into all the current collectors 101, in order to reuse electrodeposition paint as a component hanger 5 with sufficient peeling, it is conveyed to the stock position in a coating line.

  As described above, by disposing the paint peeling device 9, the electrodeposition paint adhered to the component hanger 5 can be efficiently peeled off, and when the component hanger 5 is reused, a current flows through the component 2 to be coated. It is possible to suppress the loss, and even when the component hanger 5 is reused, good electrodeposition coating can be performed. Further, by disposing the energization inspection device 10, it is possible to easily detect the component hanger 5 that is not energized, to prevent reuse, and to reduce coating defects.

  The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Electrodeposition coating equipment 2 ... Parts to be coated 3 ... Electrodeposition tank 4, 41 ... Discharge nozzle 5 ... Part hanger 6 ... Part movement mechanism 7 ... Part energization mechanism 8 ... Transfer device 9 ... Paint peeling apparatus 10 ... Energization inspection Apparatus 31 ... Overflow tank 32 ... Pump 51 ... Parts hanger body 52 ... Hook 53 ... Locking portions 71, 73 ... Non-energized bar 72 ... Energizing bar 81 ... Hanger transfer hook 91 ... Tool 92 ... Motor 93 ... Tool sliding mechanism 93a ... pedestal 94 ... load adjusting mechanism 94a ... elastic body 94b ... link mechanism 95 ... hanger fixing base 96 ... support member 101 ... current collector 102 ... hanger fixing base 103 ... holding part 104 ... support member

Claims (8)

In electrodeposition coating equipment for electrodeposition coating of parts to be coated with electrodeposition paint containing insoluble substances,
An electrodeposition tank containing the electrodeposition paint;
A discharge nozzle for circulating the electrodeposition paint in the electrodeposition tank;
A part hanger for suspending the part to be painted;
A component moving mechanism for moving the electrodeposition paint so as to face the direction in which the electrodeposition paint flows while maintaining the state where the part to be coated is immersed in the electrodeposition paint;
E Bei and a part energizing mechanism for energizing said to be painted parts Move the predetermined section by the object to be coated part wherein the part movement mechanism,
The insoluble material is a fluororesin powder or molybdenum disulfide.
An electrodeposition coating facility characterized by that. The component energization mechanism includes an energization bar for passing current to the component hanger.
2. The electrodeposition coating equipment according to claim 1, wherein the component moving mechanism moves the component to be coated by the predetermined section and then contacts the current-carrying bar. The component moving mechanism repeatedly moves and stops the component to be painted,
The component energization mechanism repeats starting to energize the part to be coated when a predetermined time has elapsed since the part to be painted has stopped, and stopping energization when the part to be painted starts to move. The electrodeposition coating equipment according to claim 1.   The electrodeposition coating apparatus according to claim 1, further comprising a paint peeling device that peels off the electrodeposition paint on the component hanger attached along with the electrodeposition coating on the part to be coated.   The paint peeling device has a tool for peeling the electrodeposition paint on the component hanger, a motor for rotating the tool, and a sliding mechanism for moving the tool along the shape of the component hanger. The electrodeposition coating equipment according to claim 4, wherein   The electrodeposition coating equipment according to claim 4, further comprising an energization inspection device that inspects whether or not the component hanger that has peeled the electrodeposition paint is energized.   The energization inspection device has a current collector that can be locked to the component hanger, and determines whether or not to energize depending on whether or not a current flowing through the current collector is equal to or greater than a predetermined threshold value. The electrodeposition coating equipment according to claim 6. The electrodeposition coating equipment according to claim 1, wherein the electrodeposition paint is a cationic electrodeposition paint containing an epoxy cationic resin.