JPH04190880A - Dust removal equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dust removing device that removes dust such as abrasive slag that adheres to the surface of a workpiece, and in particular, removes dust such as abrasive slag that adheres to the surface of the workpiece that occurs during the process of correcting painting defects. This invention relates to a dust removal device that reliably removes dust.

[Conventional technology]

Generally, car body painting is a high-quality paint, so it is performed in several steps: surface treatment, undercoat, intermediate coat, and topcoat.

If a coating defect occurs during each painting process, grinding,
Defective areas are corrected by polishing.

When such repair work is performed, the abrasive particles generated during the work adhere to the surface of the vehicle body. If the next painting is performed while the abrasive slag remains on the surface of the car body, a coating defect will occur again at the location where the abrasive slag has adhered.

Therefore, it is necessary to remove the abrasive slag that has adhered to the surface of the car body during repair work.

Conventionally, as a means of removing abrasive particles attached to the surface of the car body,
For example, there is a dust suction device disclosed in Japanese Utility Model Application Publication No. 63-126079.

The above-mentioned dust suction device blows air onto the surface of the vehicle body, and at the same time sucks and discharges the abrasive particles floating from the surface of the vehicle body.

[Problem to be solved by the invention]

However, since spraying and suction are performed in close proximity, the effectiveness of spraying may be diminished, and relatively large amounts of dust and slag may remain on the vehicle body.
A sufficient dust removal effect could not be obtained for the purpose of high-quality coating.

SUMMARY OF THE INVENTION An object of the present invention is to provide a dust removal device that reliably removes abrasive slag generated by correcting a coating defect after painting from a painted surface.

[Means to solve the problem]

In order to solve the above problems, the dust removal device of the present invention has the following features:
It consists of an arch-shaped frame section that stands upright at a position where the workpiece passes, and a dust removal unit section that is installed above and inside each side of the frame section. a moving part that advances and retreats the part;
A varnish swath traveling section that winds up the varnish swath fed from a feeding drum on one side onto a take-up drum on the other side, a varnish swath traveling drive section consisting of a drive source and its transmission means, and a varnish swath that presses the traveling varnish swath against a workpiece. The present invention is characterized in that it is provided with a pressure welding part and an air jetting part that advances from each of the air nozzle blocks arranged in parallel from the back side of the varnish swath to the workpiece side in large numbers corresponding to the shape of the workpiece and blows air onto the back side of the varnish swath.

[Function] In the dust removal device of the present invention, when a vehicle body is transported into the frame, one dust removal unit installed oppositely inside the frame advances toward the vehicle body side according to the vehicle type detected in advance, and The varnish cloth stretched between the tension rollers is pressed against both sides of the vehicle body as shown in FIG.

In this state, when the varnish swath is run and air is blown from the back side of the varnish swath by moving air nozzle blocks according to the shape of the vehicle body and blowing air from the back side of the varnish swath, dust such as abrasive scum is transferred to the varnish swab.

The varnish swath to which the abrasive slag has adhered is wound onto a winding drum.

Furthermore, as the vehicle moves forward, the dust removal unit installed at the top of the frame advances to the top of the vehicle, removing the varnish rag from the fourth
Press it against the top of the vehicle body as shown in the figure.

In this state, the varnish swath is run, and air nozzles, which are arranged in parallel according to the shape of the car body, advance to each block and blow air from the back side of the varnish swab, causing the varnish swath to stick to the car body and adhere to it. Dust such as abrasive slag is transferred to the varnish rag.

The varnish swath to which the abrasive slag and the like have been transferred is wound onto a winding drum.

The car body from which dust has been removed is transported to the next process.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment in which a dust removal device according to the present invention is applied to a painted car body will be described in detail with reference to the drawings.

The dust removal device according to the present invention includes a frame 1 erected so as to straddle a position where a painted automobile body (work) W passes, and a pedestal arranged above and inside each side of the frame 1. The main part consists of the dust removal unit 60.

The painted car body W is placed on a dolly truck 3 via a pedestal 2 as shown in FIGS. 1 to 4, and is moved in the direction of arrow A (see FIG. 1) by a conveyor 4. .

Then, as shown in FIG. 3, dust removal work is first performed on both sides of the vehicle body W, and then, as shown in FIG. 4, dust removal work is performed on the upper part of the vehicle body W.

The dust removal unit 60 is a varnish rag running unit that includes a moving part that moves main parts forward and backward with respect to the vehicle body W, a varnish rag running part that runs the varnish rag 5 in the direction of arrow B (see the first sign), a drive source and its transmission means. A drive unit, a varnish swath pressure contact unit that presses the traveling varnish swab 5 against the vehicle body W, and an air nozzle block that advances for each air nozzle block in accordance with the shape of the vehicle body and blows out air to the back side of the varnish swath 5 that travels (see Fig. 5). It consists of an air jet section.

A moving section for moving the main parts of the dust removal unit 60 forward and backward is composed of a servo motor 6, a guide rod 7.7, and a moving frame 8, as shown in FIGS. 3 and 4.

The movable frame 8 is connected to each tip of the guide door 7 and the guide door 7 of the servo motor 6 that passes through the frame 1, and is moved by advancing and retracting the rod 6a of the servo motor 6.

The main parts of the varnish cloth running section are composed of a payout drum 9 on which the wound varnish cloth 5 is set, and a winding drum 10 for winding up the traveling varnish cloth 5.

As shown in FIG. 5, the feeding drum 9 is rotatably supported by a bracket 12 fixed to the middle of the support plate 11 and a bearing 8a extending from the movable frame 8.

The varnish swath traveling drive unit includes a motor 13 as a drive source, a drive pulley 14 that transmits rotation, a belt 15, and a driven pulley 16. The rotation of the motor 13 is transmitted via the drive pulley 14, belt 15, and driven pulley 16.
The feeding drum 9 is rotated clockwise as shown by the fifth arrow C to feed out the varnish rag 5.

Further, as shown in FIGS. 3 and 4, the winding drum 10 is disposed on both sides of the movable frame 4-18 and in a symmetrical position with the feeding drum 9. The middle stage ζ is rotatably supported by a fixed bracket 12 and a bearing 8a extending from the movable frame 8. Then, the rotation of the motor 13 in the varnish cloth travel drive section is transmitted via the drive pulley 14, and the varnish cloth 5 is rotated clockwise as shown by the arrow in FIG.
Wind up.

The support plate 11.11 is fixed on the extension of the guide door 7 in the movable frame 8 as shown in FIGS. Fix vi17.

As shown in FIGS. 3 and 4, the main parts of the varnish cloth press-contacting section are composed of a tension roller 18 on the feed-out drum 9 side and a tension roller 19 on the take-up drum 10 side. Day, 19 is car body W
The varnish rag 5 that is being advanced to the side and is being moved is brought into pressure contact with the surface of the vehicle body W. As shown in FIGS. 1 to 5, the tension rollers 18 mentioned above are mounted on shafts at the lower ends of swing arms 2o and 20, which are swingably supported at the lower ends of the moving frame 8 and the mounting plate 17. be supported.

As shown in FIG.
2 and urges the tension roller 18 outward.

Further, the tension roller 19 is connected to the tension roller 18.
Similarly, the lower ends of swing arms 20 and 20 are rotatably supported on the lower ends of the moving frame 8 and the mounting plate 17, respectively.

And the swinging arm 20.20 of the tension roller 19
The biasing member (coil spring) 21) whose one end is hooked to the hooking piece 2] is biased by 0.7 to bias the tension roller 19 outward.

A locking piece 21 that locks one end of the biasing member 22 is attached to the lower end of the movable frame 8 and to the outside of each lower end of the mounting plate 17 .

The varnish rag 5 fed out from the feeding drum 9 is
As shown in the figure, a guide roller 23, a protruding roller 24 and a grooved roller 25 facing each other with the running varnish rag 5 in between! Therefore, it is guided to the tension roller 18.

The guide roller 23 described above is pivotally supported on the upper part of the moving frame 8 and the mounting plate 17, as shown in FIGS. 6 and 7.
The varnish rag 5 is guided to the tension roller 18 side.

As shown in FIGS. 6 and 7, the protruding roller 24 is rotatably supported by the moving frame 8 and the mounting plate 17, and the rotation of the motor 26 is transferred to a transmission part 27 such as a drive pulley, heald, and driven pulley. The varnish swab 5 is transmitted through the tension roller 18 and rotated counterclockwise to actively send the varnish swath 5 to the tension roller 18 side without shifting it.

As shown in FIGS. 5 and 7, the grooved roller 25 is rotatably supported by the free end of a swing arm 30.30, and is urged toward the projection roller 24 by a biasing member (coil spring) 31. and is driven by the protruded roller 24.

At this time, the protrusions of the protruded roller 24 are connected to the grooved roller 25.
This shape allows the varnish swab 5 to be fed reliably without shifting.

As shown in FIGS. 5 to 7, the swing arm 30.30 has its base end pivoted to the inside of the moving frame 8 and the mounting plate 17 so as to be able to swing freely. Part 31.31
is urged toward the protruded roller 24 side.

Further, the other ends of the biasing members 31 and 31 are hooked to spring receivers 32 attached to the moving frame 8 and the mounting plate 17, respectively, as shown in FIGS. 5 to 7.

Note that a guide roller 23, a protruding roller 24, and a grooved roller 25 are attached to the mounting plate 17 on the winding side.
installed symmetrically.

The air jet section is composed of a large number of air nozzle blocks 33 (eight in the embodiment) arranged in parallel, as shown in FIGS. 3 and 4.

In each air nozzle block 33, as shown in FIGS. 6 and 8, a plurality of rows (three rows in the embodiment) of nozzles 35 are attached to one plate 34, and the air introduction hole 36 of each nozzle 35 is connected to the It is communicated with 37.

Further, the nozzle 35 is formed with manifolds 38 and 38 as shown in FIG. 5, and the valve rods 39 are passed through the manifolds 38 as shown in FIG. A valve seat 41 is disposed on which the valve 40 comes into contact, and an air jet hole 43 is bored from the valve seat 41 into the cover plate 42. Note that a servo motor 55 is installed at the top of the manifold 38.
The servo motor 55 operates the valve 4 by moving the valve stem 39 vertically based on a predetermined command.
The clearance between the valve seat 41 and the valve seat 41 is adjusted.

The plate 34 of the air block 33 is shown in FIGS. 5 and 8.
Rod 45a and guide rod 46.46 of servo motor 45 pass through base plate 44 as shown in the figure.
is connected to each tip of the rod 45a of the servo motor 45.
Move by advancing and retreating.

The base plate 44 is connected to the movable frame 8 by connecting plates 47, 47, as shown in FIGS. 3-5.

50 (see FIG. 1) is a vehicle type detection switch installed on the entrance side of the dust removal device, and controls the dust removal unit 60 based on the detected information.

In the dust removal device having such a configuration, the varnish swab 5 for rolling the abrasives deposited on the feeding drum 9 is fed out by the feeding drum 9 that rotates clockwise, and is fed out by the roller 24 with projections 24 that rotates counterclockwise. and is pulled by the winding drum 10 while applying tension without shifting, guide roller 23, roller with projection 24, roller with groove 25, tension roller 8, 19, roller with projection on the winding side 24, groove on the winding side. The film is wound onto the winding drum 10 via the attached roller 25 and the guide roller 23 on the winding side.

When the vehicle body W placed on the dolly trolley 3 via the pedestal 2 approaches the dust removal device, the vehicle type detection switch 50 shown in FIG. 1 detects the vehicle type.

Based on this vehicle type detection information, the dust removal units 60 and 60 installed opposite to each other inside the frame 1 advance toward the vehicle body W side by each servo motor 6, and remove the varnish rag 5 stretched between the tension rollers 8 and 19 from the vehicle body W. Press it against the side of the

In this state, the varnish rag 5 is run, and the varnish rag 5 is advanced in each air nozzle block 33 in accordance with the shape of the vehicle body to blow out air from the air jet holes 43, thereby bringing the varnish rag 5 into close contact with the vehicle body W.

As the car body W advances on the conveyor, the abrasive slag attached to both sides of the car body W is reliably transferred to the varnish swab 5, and a device composed of the car body surface transfers the abrasive slag to the varnish swab 5. is wound onto a winding drum 10.

Further, as the vehicle body W advances, the dust removal unit 60 disposed on the inner upper part of the frame 1 advances to the upper surface of the vehicle body W by the servo motor 6, and removes the varnish rag 5 stretched between the tension rollers 18 and 19 from the upper surface of the vehicle body W. Press it against the

In this state, the varnish rag 5 is run, and the varnish rag 5 is advanced in each air nozzle block 33 in accordance with the shape of the vehicle body to blow out air from the air jet holes 43, thereby bringing the varnish rag 5 into close contact with the vehicle body W. Further, in this state, each servo motor 55 is operated based on a predetermined command to move the valve rod 39 up and down, and air at an optimal flow rate is always jetted from each air jet hole 43.

Then, as the vehicle body W moves forward, the abrasive slag adhering to the upper surface of the vehicle body W is transferred to the varnish cloth 5 and removed from the surface of the vehicle body W.

The varnish rag 5 to which the abrasive slag has been transferred is wound up on a winding drum 10.

The car body W from which dust such as abrasive slag adhering to the surface of the car body has been removed is transported to the next process.

〔Effect of the invention〕

As described above, the dust removal device according to the present invention transfers dust such as abrasive slag that is generated during the paint correction process and adheres to the car body to the varnish swab that runs in close contact with the car body, and transfers the dust from the back side of the varnish swab to the car body side. Since the optimal flow rate of air can be ejected at all times, dust removal can be performed reliably and efficiently, and car bodies with clean surfaces can be sent to the next process.

[Brief explanation of drawings]

FIG. 1 is a side view showing an example of a dust removal device according to the present invention;
Fig. 2 is a partially cutaway side view, Fig. 3 is a front view showing the state of dust removal on both sides, Fig. 4 is a front view showing the state of dust removal on the top surface, and Fig. 5 is a partially enlarged view of the dust removal unit. Figure 6 is a cross-sectional view taken along line Vl-VI in Figure 5, Figure 7 is a cross-sectional view taken along line ■-■ in Figure 5, and Figure 8 is an enlarged cross-section of the air jet section. It is a diagram. W...Car body (work) 1...Frame 3...-Dolly trolley 5...Varnish cloth 8...Movement frame 9...・
...Feeding drum 10 ...... Winding tram
18, 19...Tension roller 23...
...Guide roller 24 ...Roller with protrusion 2
5... Grooved roller 33... Air nozzle block 43... Air outlet

Claims (2)

[Claims] (1) Consisting of a frame section that is erected so as to straddle the position where the workpiece passes, and a dust removal unit section that is installed above and inside each side of the frame section, and the dust removal unit section is configured to remove dust from the workpiece. a varnish swath traveling section that winds up the varnish swath fed from a feeding drum on one side onto a winding drum on the other side, and a varnish swath traveling drive section that includes a drive source and its transmission means. , a varnish swath pressure contact section that presses the traveling varnish swab against the workpiece, and an air jet that advances from each air nozzle block, which is arranged in parallel from the back side of the varnish swath to the workpiece side in accordance with the shape of the workpiece, and blows air onto the back side of the varnish swath. A dust removal device characterized by having a section. (2) The air jetting section has a valve stem, a valve seat provided at one end of the valve stem and in contact with the valve, and a driving source that can control the valve stem to move forward and backward based on a predetermined command. The dust removal device according to claim 1, further comprising adjusting the flow rate of air ejected from a gap between the valve and the valve seat.