JPH0633961U - Workpiece lifting prevention device in electrodeposition coating process - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to prevent a decrease in the operating rate of the device due to paint adhesion, by a fixed lifting mechanism for the work in the electrodeposition tank. [Structure] A tip of a floating prevention arm 24 fixedly attached to a hanger arm 22 is inserted into a bracket 28 fixedly attached to a skid 26 supporting a work, so that when the work floats when immersed in an electrodeposition tank. ,
The upper surface of the tubular member 27A of the skid 26 abuts on the work lifting prevention arm 24, and the upward movement of the cab 25 is restricted.
It is regulated by the state of engagement between the lift-up prevention arm 24 and the tip thereof.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for preventing a work from floating in the electrodeposition tank in the process of lowering and immersing the work in the electrodeposition tank and applying the electrodeposition coating to the work.

[0002]

[Prior art]

 Conventionally, electrodeposition coating has been generally performed when painting the body of a truck cab or the like. This electrodeposition coating, for example, cationic electrodeposition coating, is a coating method that skillfully utilizes the electrophoretic and electrodialysis phenomena of polymer electrolytes, and the object to be coated is diluted with an acid-neutralized dilute water-soluble coating. When loaded as a cathode using a separately installed anode, the electrophoretic phenomenon causes the coating film components to be electrodeposited on the cathode, and the electrodialysis phenomenon causes the water in the coating film to be dehydrated, resulting in a non-water-soluble coating film. Is formed, and uniform application is performed by washing with water and drying.

By the way, when performing the electrodeposition coating as described above, a work, for example, a cab of a truck is mounted on a hanger suspended and supported by a carrier running along a rail installed on a ceiling portion of a building. It is suspended and held via a skid that is fixedly attached to and is transported from the cleaning process to the electrodeposition coating process. In the electrodeposition coating step, the cab suspended and held on the hanger is lowered and immersed in the electrodeposition tank.

[0004]

[Problems to be solved by the device]

 However, the conventional electrodeposition coating process has the following problems. That is, in the electrodeposition coating process, as described above, the cab suspended and held on the hanger is lowered into the electrodeposition tank and immersed therein. When immersed, the cab floats up and comes off the hanger. There is a risk.

In order to prevent this, conventionally, a hanger is provided with a device for preventing the work from floating. A conventional work lifting prevention device is configured as shown in FIGS. 7 and 8. First, the hanger 1 is composed of a hanger frame 2 suspended and supported by the carrier via a chain, and a pair of substantially U-shaped hanger arms 3 formed in a substantially U-shape on both sides. The base ends of the pair of hanger arms 3 are rotatably connected to both side ends of the hanger frame 2, and the pair of hanger arms 3 rotate in opposite outer directions with respect to the hanger frame 2. Expand by doing so.

A movable clamp device 6 for clamping the skid 5 fixedly attached to the bottom of the cab 4 from above is attached to both sides of the tip of the pair of hanger arms 3 of the hanger 1. The clamp device 6 is composed of a substantially L-shaped hook 7 and two links 8 and 9.

One of the links 9 is rotatably connected at one end to a base 10 fixedly attached to the tip of the hanger arm 3 via a joint pin 11, and the other end is connected to the other end of the link 9. One end of the link 8 is rotatably connected via a joint pin 12. A base end portion of the hook 7 is rotatably connected to the base 10 via a joint pin 13, and a corner portion of a tip end thereof is rotatably attached to the other end of the link 8 via a joint pin 14. Are connected.

In such a clamp device, when the operation bar 15 fixedly attached to the link 8 is operated to form a relationship in which the link 8 and the link 9 form a predetermined angle as shown by a chain double-dashed line in FIG. When the link 7 and the link 9 are in a straight line as shown by the solid line in FIG. 8, the hook 7 is in a raised state. That is, when the hook 7 is tilted, the tip of the hook 7 retreats outward from the position above the skid 5 fixedly attached to the bottom of the cab 4, so that the skid 5 is not clamped, that is, unclamped. It becomes a state. Further, when the hook 7 is raised, the tip of the hook 7 is located above the skid 5, so that the skid 5 is clamped and the skid 5 is abutted and locked on the tip of the hook 7. The lift of the skid 5, that is, the cab 4 is prevented.

However, in such a conventional movable clamp device 6, since it is movable, the links 8, 9 are mutually connected via the joint pins 11, 12, 13, 14 as described above. The link 8 and the hook 7 are connected to each other, and as a result of the paint being accumulated on the joint pins 11, 12, 13, and 14, the following inconvenience occurs. That is, for example, in a clamped state, malfunction of the pivotal connecting portion due to the joint pins 11, 12, 13, and 14 occurs, and the tip of the hook 7 is not retracted from the position above the skid 5 to the outside. 4 cannot be loaded or unloaded on the hanger 1, or the crank cannot be loaded, causing the cab 4 to rise.

Further, the accumulated paint is hardened and dust is attached to the surface of the paint to deteriorate the quality. For this reason, in the past, since it is necessary to prevent such inconvenience in advance, periodic disassembly / cleaning is required, and a large amount of work time is required for the periodic disassembly / cleaning (for example, 8 hours / day). ), There was a problem that the operating rate of the device was reduced. Therefore, the present invention has been made in view of the above, and eliminates the conventional floating prevention mechanism by the movable structure, and eliminates the above-mentioned conventional problems by the fixed type floating prevention mechanism, so that the paint adhesion is prevented. The purpose is to prevent a decrease in the operating rate of the equipment due to.

[0011]

[Means for Solving the Problems]

 For this reason, the present invention comprises a hanger suspended and supported by a carrier device having a pair of hanger arms whose proximal end is pivotally supported and whose distal end is expanded. Electrodeposition in the process of suspending and holding the workpiece at the arm tip through a skid fixedly attached to the bottom of the workpiece, transporting the workpiece, dipped in the electrodeposition tank, and applying the electrodeposition coating to the workpiece. A device for preventing lifting of a work in a tank, in which an engaging pin is erected on the upper end of each of the pair of hanger arms, and the hanger expanding direction from the engaging pin on the upper end of the pair of hanger arms. A substantially L-shaped work lifting prevention arm is provided upright at a position shifted to a position that extends substantially parallel to the engagement pin and extends to a position opposite to the upper end of the rear engagement pin with a predetermined gap therebetween. , Skip Engagement portions that can engage with the engagement pins are provided at the lower portions of both ends of the skid against which the hanger arm abuts during lifting, and at the upper portions of both ends of the skid, a cross-section substantially open in the hanger expansion direction is provided. A bracket is provided which is shaped like a character and into which the tip of the work lifting arm can be inserted.

[0012]

[Action]

 In such a configuration, the pair of hanger arms in the expanded state are closed and then lifted, so that the engagement pin engages with the engagement portion on the skid side and the work is integrated with the skid from the dolly on which the work is placed. lift. At this time, the tip of the lifting prevention arm also projects into the bracket. As a result, when the work is lifted up during immersion in the electrodeposition tank, it is regulated by the tip of the floating prevention arm, and it is regulated by the bracket and the tip of the floating prevention arm with respect to rocking in the front-back direction. And since it is not a movable structure, its function does not deteriorate regardless of paint adhesion, and the number of malfunctions and the number of regular inspections can be greatly reduced, and operating efficiency can be improved.

[0013]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 6, a hanger 20 includes a hanger frame 21 supported by a carrier running along a rail erected on a ceiling of a building via a chain and both sides formed in a substantially U shape. It is composed of a pair of substantially U-shaped hanger arms 22. The base ends of the pair of hanger arms 22 are rotatably connected to both side ends of the hanger frame 21, and the pair of hanger arms 22 rotate in opposite outer directions with respect to the hanger frame 21. By doing so, it expands (see Fig. 5 (A)).

The structure of the hanger 20 is the same as the conventional one. Engaging pins 23 are vertically provided on both sides of the upper ends of the pair of hanger arms 22. Further, at a position deviated from the engaging pins 23 on both sides of the upper ends of the pair of hanger arms 22 in the expanding direction of the hanger 20, the upper ends of the rear engaging pins 23 extend vertically in parallel with the engaging pins 23. A substantially L-shaped work lifting prevention arm 24 extending horizontally is provided upright at a position facing each other with a predetermined gap.

Engagement portions 27 with which the engagement pins 23 can be engaged are provided at the lower portions of both ends of the skid 26 which the hanger arm 22 abuts when the skid 26 fixedly attached to the bottom of the cab 25 as a work is lifted. There is. The engagement portion 27 is configured by fixedly attaching a cylindrical member 27A having an open bottom surface to the lower portions of both ends of each of the skids 26. The tubular member 27A is formed of an angular tubular portion 27a at the upper end and a trapezoidal tubular portion 27b opening downward at the lower end.

A bracket 28, which has an approximately U-shaped cross-section and is opened in the expanding direction of the hanger 20, and into which the tip of the workpiece lifting prevention arm 24 can be inserted, is provided at the upper part of each end of the skid 26. The bracket 28 is fixedly attached to the upper surface of the cylindrical member 27A forming the engaging portion 27 and extends vertically upward. In FIG. 1, reference numeral 29 is a regulating plate that regulates the position of the arm 22 when the hanger arm 22 is closed, and is vertically extended to a position corresponding to the tip surface of the arm 22. Further, 30 is a stop bracket that restricts the position of the arm 22 when the hanger arm 22 descends, and is arranged at a position corresponding to the lower surface of the base end portion of the arm 22.

Next, the operation of the work lifting prevention device having such a configuration will be described. As shown in FIG. 5 (A), when the pair of hanger arms 22 in the hanger 20 is expanded, the cab mounted and supported on the carriage 31 shown in FIG. 1 via the skid 26 between the hanger arms 22. 25 is introduced between the hanger arms 22 (see FIG. 1). Then, when the pair of hanger arms 22 in the expanded state are closed, as shown in FIG. 5B, the engagement pin 23 is located below the engagement portion 27, and the work lifting prevention is provided inside the bracket 28. The tip of the arm 24 is inserted. Next, when the hanger 20 is lifted, the engagement pin 23 is inserted into and engaged with the inside of the engagement portion 27 as shown in FIG. 4, and the cab is placed and supported on the hanger 20 via the skid 26. 25 rises (see FIG. 5 (C)). In this way, the cab 25 suspended and held by the hanger 20 is conveyed to the electrodeposition tank 32 as shown in FIG. 6, and is dipped into the electrodeposition tank 32 for electrodeposition coating. The cab 25 submerged in the electrodeposition tank 32 is swung back and forth by swinging the hanger 20 to the position shown by the alternate long and short dash line in FIG.

After the completion of the electrodeposition coating process, contrary to the above, the hanger 20 is conveyed to the position of the dolly 31 and the pair of hanger arms 22 is opened to support the cab 25 on the dolly 31. According to this structure, as described above, the tip of the lift-up preventing arm 24 projects into the bracket 28, so that when the cab 25 floats up during immersion in the electrodeposition tank, the skid 26 on the work-lifting preventing arm 24 is prevented. The upper surface of the cylindrical member 27A comes into contact with the upper surface of the cab 25, and the upward movement of the cab 25 is restricted, and the forward and backward and leftward and rightward swings are restricted by the engagement state of the bracket 28 and the tip of the lifting prevention arm 24. .

Since the work lifting prevention device is a fixed type as compared with the conventional movable type clamping device, there is no movable part, and there is no inconvenience that paint is accumulated on the movable part. As a result, the cab 25 can be loaded and unloaded smoothly on the hanger 20 at all times, and there is no concern of quality deterioration, so periodic disassembly and cleaning are unnecessary, and the work time required for this disassembly and cleaning is reduced. It is possible to improve the operation rate of the device.

Incidentally, it is possible to reduce the time required for the periodic maintenance of the movable part, for example, 2000 hours / year. Also, equipment downtime due to malfunction can be reduced, for example, 1000 minutes / year. Furthermore, it is possible to reduce equipment downtime, for example, 20 hours / year when the work is lifted when cranking is not possible, and it is clear from this that the operating rate of the device can be improved.

As described above, the present invention has been described with reference to the specific embodiments, but the present invention is not limited to this, and a person skilled in the art can apply the present invention to the present invention. It should be noted that various changes and modifications can be made without departing from the scope of the attached utility model registration request.

[0022]

[Effect of device]

 As described above, the present invention eliminates the conventional floating prevention mechanism by the movable structure and adopts the fixed type lifting prevention mechanism, so that the cab can be loaded and unloaded smoothly on the hanger at all times, and the deterioration of the quality is prevented. Since there is no need to worry, there is no need for regular disassembly / cleaning, the work time required for this periodic disassembly / cleaning can be reduced, and the operation rate of the equipment can be improved. It is a thing.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a work lifting prevention device in an electrodeposition coating process according to the present invention.

FIG. 2 is a plan view of the above embodiment.

FIG. 3 is a partial perspective view of the above embodiment.

FIG. 4 is a partial front view of the above embodiment.

FIG. 5 is a schematic front view illustrating the operation of the above embodiment.

FIG. 6 is a schematic side view illustrating the operation of the above embodiment.

FIG. 7 is a front view illustrating a conventional device.

FIG. 8 is a front view illustrating a conventional clamp device.

[Explanation of symbols]

 20 Hanger 22 Hanger Arm 23 Engagement Pin 24 Work Lifting Prevention Arm 25 Cab 26 Skid 27 Engagement Part 28 Bracket 32 Electroplating Tank

Claims (1)

[Scope of utility model registration request] 1. A hanger suspended from and supported by a transfer device having a pair of hanger arms whose base end side is pivotally supported and whose tip end side is opened and unfolded. The pair of hanger arm ends are provided. Part, the work is suspended and held via a skid fixedly attached to the bottom of the work, and the work is transported and dipped into the electrodeposition tank to be dipped in the electrodeposition tank in the process of applying the electrodeposition coating. Is a device for preventing lifting of the work, wherein an engaging pin is erected on the upper end of each of the pair of hanger arms and is displaced in the hanger expanding direction from the engaging pin on the upper end of the pair of hanger arms. At the position, a substantially L-shaped workpiece lifting preventing arm extending substantially parallel to the engaging pin and extending to a position opposed to the upper end of the rear engaging pin with a predetermined gap therebetween is erected while the skid is lifted. An engaging portion capable of engaging with the engaging pin is provided at a lower portion of each of the skid ends contacted by a hanger arm, and an upper portion of each of the skid ends has a substantially U-shaped cross-section that is opened in a hanger expanding direction. None A work lifting prevention device in an electrodeposition coating process, characterized in that the work lifting prevention arm is provided with a bracket into which the tip of the work lifting prevention arm can project.