KR930007270Y1 - Electric coating device - Google Patents

Abstract

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Description

Electrodeposition Coating Device

Figure 1 is an overall side cross-sectional view showing an embodiment of the present invention.

2 is a front cross-sectional view of FIG.

3 is an enlarged view of portion A of FIG.

4 is a partially enlarged side view showing the relationship between the conveying chain and the drying chain.

5 is a partially enlarged sectional view including an axis.

6 is a partial side view showing a state immediately after the moving carrier lowers.

7 is an overall side sectional view of the prior art.

The present invention relates to an electrodeposition coating device, and more particularly to a transfer device of the object between the coating treatment tank.

In accordance with the flow of automation and energy saving in the industry, various coating methods have been devised in the paint industry, but in general, the treatment time in the treatment tank requires 1 to 5 minutes. It takes about 30 to 30 minutes and is not suitable to meet the conditions, and due to the increase in cost and the large size of the automation device itself, it still does not reach the full-scale painting automation device, requiring a large place in the facility. The device is accompanied by a general decrease in efficiency, inconsistency, and inconvenience in automatic coating work.

As a solution to this problem, for example, Japanese Unexamined Patent Application Publication Nos. 61-4920 and 59-40364 have been disclosed. However, as shown in FIG. 7, several tanks for coating treatment are serially connected. The drying furnace 44 is installed in the upper part of the treatment tank 43 formed in two steps, and the conveying chain 45 is moved up and down at the center of each tank between the treatment tank 43 and the drying furnace 44. At the same time, the direction is changed to large sprockets revolving at both ends so as not to penetrate into the drying furnace 44, and both ends are annularly connected along the bottom of the rolling groove, and a drying chain 46 is installed at the top of the drying furnace. The part is connected to the first sprocket which is coaxial with the rotation shaft of the conveying chain 45, and the support chain protruding freely from the supporting plate at an appropriate pitch is provided on the conveying chain, and conical pins are rotated in the drying chain. Rising toward the side, the conveying chain 45 and the drying chain 46 can be driven by separate driving devices, and the staying time of the workpiece in the drying furnace 44 is conveyed by the low speed movement of the drying chain 46. It was possible to make a long adjustment irrespective of the movement of the molten chain, and to reduce the size of the supporting rod from the conveying chain 45 of the supporting rod to the drying chain 46.

However, this apparatus was able to greatly reduce the size of the equipment by arranging a drying furnace on the upper part of the treatment tank to slow down the moving speed of the drying chain. In order to make it possible, each of the three fourth sprockets should be installed on the upper side of the tank, so that the overall length of the treatment tank and the overall length of the apparatus are regulated by the conveying chain. there was.

The present invention aims to provide a simple electrodeposition coating apparatus which can solve the above problems and shorten the treatment tank to the required minimum length to shorten the overall length as the apparatus.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

In FIGS. 1 to 4, the main body 1 is a frame body 2 assembled to an angle member, and is covered with an inner plate 4 and an outer plate 5 by inserting a heat insulating material 3 in the middle of the inner and outer surfaces of the frame body 2. As the upper and lower structures to be covered, the lower part is the paint chamber 6, and the upper part is a small heating and drying furnace 7 in the middle. (8) is provided on the outer periphery of the painting chamber (6) rather than the horizontal inspection, and the front and rear directions of the painting chamber (6) and the heating and drying furnace (7). The side wall is provided with a work tool 9 for collecting and installing the workpiece, an inlet 10 and an outlet 11 by heating and drying. The treatment tank 12 located in the inner lower part of the painting chamber 6 is composed of nine groups arranged at the same pitch interval in series in the front-rear direction. Since each tank is installed in correspondence with each process of normal electrodeposition coating, the preliminary degreasing tank 13, the degreasing tank 14, the first washing tank 15, the surface adjustment tank 16, and the skinning tank 17 are respectively installed from the front. ), The second washing tank 18, the third washing tank 19, the electrodeposition tank 20, the washing tank 21 and the like.

At the front end and the rear end of the treatment tank 12, the front standby station 22 and the rear standby station 23 are provided.

A pair of pedestals 24 of which the ends are U-shaped are protruded on both sides of the squares 13-12 and the front-rear waiting stations 22, 23 in the front-rear direction. A wide frame in which the coating chamber 6 is attached to the widthwise side wall is provided with two pairs of corresponding guide plates 25 and guided to the opposing guide plates 25 at both ends in the width direction of the roller 26 to be in contact with each other. An unobstructed carrier 26 is formed over each set, and is driven up and down by a driving device (not shown) so as to be movable between the lower position shown by the solid line in FIG. 1 and the upper position shown by the two-dot chain line. It is.

This carrierless carrier 26 is a closer look, a pair of moving back and forth It is composed of a wide frame body 27 in which an angle member of a cross section is joined by a coupling member in the width direction, and a slider 27, which is guided to the frame body 27 and can be moved in the front and rear direction by the pitch of the irradiated teeth. A pair of locking portions 29 are vertically suspended from the two width directions of the 28 in the lower direction and having a pair of clicks at the lower ends in the front-rear direction. The pair of engaging portions 29 correspond to the centers of the front and rear portions 22 and 21-21 at the position moved forward of the slider 28 (hereinafter referred to as home position). The location is fixed.

Thus, in the state where the slider 28 moves backward from the original position by the pitch of the irradiator (FIG. 6), each pair of the engaging portions 29 is like the post-waiting station 23 and the legs 13-21. Is the position corresponding to the center of the front-rear direction.

The heat drying furnace 7 is heated up to a heat treatment temperature in a room by a normal heating device (not shown). Small sprockets 31 installed through the outlet 11 and the inlet 10 before and after the pair of drying chains 30 outside the furnace 7 along the widthwise side walls of the furnace 7. It is installed at the top horizontally by the drive to move forward from behind.

The pin 34 protrudes on the upper surface of the drying chain 30 at a narrow constant pitch. The small sprocket 31 is supported by the shaft 33 coaxially with the large sprocket 32 which will be described later, and is driven at a low speed independently of the large sprocket 32 by a driving device (not shown).

Between the end of the drying chain 30 on the commute 11 side of the heat drying furnace 7 and the new air station 22 of the painting chamber 6, the first half conveying chain 35 for conveying the workpiece is installed. The rear conveying chain 36 for conveying the workpiece is provided between the rear standby station 23 and the end of the inlet 10 side of the drying chain 30.

The front and back conveying chains 35 and 36 are installed to follow a path as shown by the sprocket 32 and the large and small sprockets 37, but these sprockets 32 and 37 are doubled in either way. Therefore, the front and back conveying chains 35 and 36 are also double chains, and the front and back conveying chains 35 and 36 support bearings rotatably on the upper part of the pitch support 38 fixed at the inner end thereof. A support plate 39 on a plain arc protrudes inward from a lower portion of the support 38. The front and back conveying chains 35 and 36 are always driven at the same speed by an independent driving device (not shown). do.

The front and rear half transport chains (35) and (36) have their driving speeds and pitches of the support (38) in accordance with the speed of electrodeposition coating, and the driving speeds of the drying chains (30) are required for the required heat treatment drying time and heating drying furnace. Determined by The hanger 40 of the workpiece is longer than the distance between the facing pedestals 24 and 24, but slightly longer than the distance between the pair of facing supports 38 and 38 of the front and back conveying chains 35 and 36. The T-shaped hook 41 protrudes upward from the position corresponding to each other by the catching part 29 of the upper surface in a short horizontal direction.

In the electrodeposition coating device configured as described above, first, the uncoated object 42 in the work tool 9 is removed from the support plate 39 of the pair of supporting members 38 of the first half conveying chain 35. Suspended The object 42 is moved to the upper center of the ante station 22 by the first conveying chain 35 and then lowered so that the hanger 40 is supported by the pedestals 24 and 24 of the ante station 22. The location is determined. The backing plate 39 becomes empty and moves downward again and then turns upward to face the drying conveyor 30.

In this state, the moving carrier 26 is in the lower position and the slider 28 is at the rear.

After the processing of the legs 13-21, the slider 28 moves forward by the pitch of the irradiated teeth, and each locking portion 29 is fixed to the hanger positioned on the pedestals 24 and 24 of the one-step forehead. It is caught with the hook 41 of 40.

The moving carrier 26 then moves up to reach the upper position, and the slider 28 is in its original position by hanging the hanger 40 on each of the 10 pairs of engaging portions 29. Subsequently, the slider 28 moves backward by the pitch of the irradiated teeth, and then descends to reach the lower position. (FIG. 6) In this state, the post-waiting station 23 passes through the post wash tank 21. In addition, the articles 42 and 21 are moved to the workpiece 42 immediately before passing through the tank, and in the preliminary degreasing tank 13, the workpiece 42 at the stand-by station 22 moves from the bottom upwards. With the hanger 40 supported on the backing plate 39 of the pair of supports 38 of the back conveying chain 36 coming up (i.e. after a certain time), the slider 28 is moved by the pitch of the irradiated teeth. 10 pairs of engaging portions 29 are moved to the front and are caught with the hook 41 of the workpiece placed on the pedestal 24 at the front of one process, and the object 42 is repeated by repeating the above-described operation. Move backwards in sequence.

On the other hand, the hanger 40 (the workpiece 42) supported by the support 38 of the back conveying chain 36 is lowered to the upper side of the small sprocket 31 as shown in FIG. The part is supported between the pins 34 of the drying chain 30, separated from the support plate 39, and transported into the heat drying furnace 7 as it is, while passing through the heat drying furnace 7 for a predetermined time therebetween. Heat treatment is dried. The coating object 42 which has exited the heating furnace 7 is hanger 40 at both ends of the support plate 39 of the first conveying chain 35 which rises from the bottom at the end of the outlet 11 side of the drying chain 30. The part is supported and ascends at the same time as the supporting plate 39 and then is strong to reach the work tool 9 and collected by the worker in the hanger 40 sequentially. The worker attaches the unpainted workpiece to the hanger 40 from which the workpiece 42 is collected.

Via the above process, the unpainted to-be-coated 42 is continuously coated one by one. Since the workpiece 42 in the processing tank 12 performs the conveying operation by the vertical movement of the moving carrier body 27 and the horizontal movement of the slider 28, the three sprockets, which are conventionally required on each side, are not required. Since the pitch between each group 13-21 can be set as the minimum required in the function of each group, the overall length of the coating chamber 6 and the electrodeposition coating apparatus can be shortened.

As described above, the present invention makes it possible to shorten the overall length of the treatment tank by installing an uncoated carrier which can be moved up and down by the pitch of the irradiation and the upper side of the treatment tank of the coating, thereby making it a compact electrodeposition coating device. It works.

Claims (1)

The treatment tank 13-21 which consists of several tanks installed in series, the heating drying furnace 7 installed in the upper space of this treatment tank 13-21, and the said treatment tank ( 13)-(21), the front and rear conveying chain 35 for conveying the workpiece 42 by connecting the inlet side and the outlet side of the heating drying furnace 7 to the outlet 11 side and the inlet 10 side of each other, (36), the drying chain (30) for carrying the workpiece 42 in the drying furnace (7), and the upper position when the spaces above the treatment tanks (13) to (21) are in the upper position and the lower position. In the forward and backward direction (the transfer direction of the workpiece) in the conveying direction of the workpiece 42, the pitch is moved by the pitch between each group, and then descends to reach the lower position, in this lower position after waiting station installed on the exit side of the treatment tank (23) and the quenching station (22) immersed in the respective positions in the correct position, and after a certain processing time, after the retreat in the reverse direction to the direction of the transfer of the workpiece and installed at the inlet side of the treatment tank (22) Electrodeposition coating apparatus characterized in that it comprises a moving carrier to repeat the same operation to reach the original position of the workpiece conveyance direction of the upper position by walking up the workpiece (42) positioned in each set.