JP3670166B2 - Suction type dust remover - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a suction type dust removing device used for removing dust on the surface of a vehicle body before painting, for example, in an automobile painting line, and more particularly to a suction type dust removing device capable of enhancing the dust removing effect. .
[0002]
[Prior art]
Car body painting is generally performed in the order of substrate surface treatment, undercoating (electrodeposition coating), intermediate coating, and topcoating. However, if a coating failure occurs in each coating process up to the above intermediate coating, Sanding with sandpaper, so-called “Karaken” is performed to correct the defective part. However, if the next coating is performed with the slab attached to the defective part and its surroundings, the quality of the appearance of the coating surface will be impaired. Dust removal measures are taken to remove polishing.
[0003]
Conventionally, an operator cleans the surface of a vehicle body by air blow, or by absorbing dust using a blade wipe type dust suction device or a brush type dust suction device. However, the cleaning by the air blow has a problem that the dust attached to the vehicle body is scattered by the air blow, so that it adheres again to the own vehicle body or adheres to another vehicle body, resulting in poor efficiency. In addition, since the blade wiper type or brush type dust suction device removes the blade wipes and brushes by contacting the rotating blade wipes brush with the vehicle body and digging up the dust, these blade wipes and brushes There is a problem in that a secondary problem occurs in which dirt on the vehicle body adheres to the vehicle body.
[0004]
In order to solve such a problem, for example, a non-contact type suction dust removing device as described in Japanese Patent No. 2698917 is used. This suction-type dust removing device includes a vacuum device disposed so as to surround the vehicle body in a conveyance path of the vehicle body that is conveyed while being placed on the carriage. This vacuum device is provided with a suction duct arranged close to the vehicle body, and an air nozzle is provided in the suction duct. Therefore, air is blown to the transported vehicle body by the air nozzle in the suction duct, and dust on the surface of the vehicle body is blown up and removed by suctioning with the suction duct.
[0005]
[Problems to be solved by the invention]
The above conventional suction type dust removal device is advantageous in that it does not cause secondary problems such as attachment of blades to remove dust without contact with the vehicle body. Because the air blown out by the air causes turbulent flow in the suction duct, the dust adhering to the surface of the vehicle body is once separated from the surface of the vehicle body, but cannot be smoothly sucked in the suction duct in which the turbulent flow is generated. There's a problem. That is, in the suction duct where turbulent flow is generated, the air flow is not always directed in the suction direction of the suction duct, and if the direction is opposite to the suction direction, the suction efficiency decreases. In some cases, the dust once blown up may be reattached due to the influence of turbulent flow.
[0006]
In order to prevent such a problem, it is conceivable that the conveyance time of the vehicle body is lengthened to increase the substantial suction time and the dust removal efficiency is improved. Since a space twice as long as the entire length of the vehicle body is required, there is a problem in that extending the line length beyond this will cause a significant delay in processing time and adversely affect other processes. Accordingly, the present invention provides a suction type dust removing device that can efficiently remove dust on the surface of a vehicle body .
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention described in claim 1 is an exhaust that can be bent to a suction port (for example, the suction port 6 in the embodiment) that can be disposed opposite to the surface of the vehicle body (for example, the vehicle body 1 in the embodiment). duct (e.g., the exhaust duct 5 in the embodiment) is mounted in the suction-type dust collector for sucking and removing dust is brought close to the suction port to the vehicle body surface, on the outside of the suction port body surface facing the suction port An air nozzle (for example, air nozzle 9 in the embodiment) that blows off dust is disposed, and brackets are rotatably provided on the guide rails on both side walls of the suction port, and the protruding length is adjusted at the insertion portion of the bracket possible mounting arm is arranged, said air nozzles is mounted to the mounting arm, the flange portion and the suction port which protrudes in the horizontal direction on the periphery (e.g., Wherein the flange portion 16 in the facilities embodiment) is provided.
With this configuration, when air is blown from the outside of the suction port by the air nozzle, dust attached to the surface of the vehicle body facing the suction port is blown out by the air. The dust blown up is sucked and removed by the air that blows out from the air nozzle, reflects off the surface of the vehicle body, and flows along the suction direction of the suction port.
[0008]
Further, of the air blown from the air nozzle, the air that is reflected by the surface of the vehicle body and reaches the vicinity of the periphery of the suction port is prevented from escaping to the outside of the suction port by the flange portion. Further, the air drawn in from the periphery of the suction port so as to be drawn into the air sucked from the suction port is drawn into the inside from the suction port so as to go around along the flange portion.
[0009]
In a second aspect of the invention, a robot (for example, the robot 4 in the embodiment) is provided adjacent to the vehicle body , and the suction port is supported by an arm of the robot (for example, the robot arm 7 in the embodiment). It is characterized by.
With this configuration, to extend and retract the arm by copying operation has been set in advance by teaching or the like, it is possible to perform dust removal by moving the finely suction port in accordance with the vehicle body shape without moving the vehicle.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 to 8, reference numeral 1 denotes a vehicle body. The vehicle body 1 is in a state after air polishing, for example, after the intermediate coating is finished and before the top coating (or before the undercoat is finished and before the intermediate coating). The vehicle body 1 is placed on a base 3 (shown only in FIG. 8) in the dust removal booth 2, and two articulated robots 4 are installed on both sides of the vehicle body 1 on the side of the vehicle body 1 of the dust removal booth 2. ing. On the other hand, an exhaust duct 5 is connected to a vacuum device (not shown), and a suction port 6 is attached to the open end of the exhaust duct 5. In FIG. 8, each robot 4 can slide along a traveling base 4b on a fixed base 4a.
[0011]
The exhaust duct 5 is formed of a bellows-like flexible member, and sends dust sucked from the suction port 6 to the vacuum device. The suction port 6 of the exhaust duct 5 is supported at the tip of the robot arm 7 of the robot 4. The suction port 6 is formed to open downward when viewed from the front as shown in FIGS. 6 (a) and 6 (b), and has a tapered shape when viewed from the side as shown in FIGS. 6 (a) and 6 (c). Has been. In this way, while widening in the vehicle width direction, the suction width is ensured while the suction flow velocity is increased by making the shape tapered. Here, as shown in FIG. 6C, a known rotation mechanism 7 a is provided between the fixed member K and the robot arm 7.
[0012]
As shown in FIG. 3, the tip of the robot arm 7 is fixed to a fixing member K wound around the top of the suction port 6 so that the suction port 6 can be rotated 2 by a rotation mechanism 7a at the tip of the robot arm 7. It has become. The exhaust duct 5 is not flexible as long as it can follow the movement of the robot arm 7, but may be formed of a bendable pipe.
Therefore, since the robot arm 7 can rotate the suction port 6 by the rotation mechanism 7a as schematically shown in FIG. 8, the bonnet B, the front and rear fender panels F of the vehicle body 1, the trunk lid T, The suction port 6 can be opposed to the roof panel R. In addition, the movement of the robot arm 7 of the robot 4 is captured in advance in memory so that the robot arm 7 can be moved on the surface of the vehicle body 1 by teaching in advance.
[0013]
As shown in FIG. 1, an air nozzle 9 that is long in the vehicle width direction is attached to the suction port 6 via a pair of rod-like attachment arms 8 provided on the sides. Specifically, guide rails G are provided on both side walls of the suction port 6 in the vertical direction, and brackets 11 that can be rotated on the guide rails G and can be fixed by bolts 10 are attached to the guide rails G. It has been. The bracket 11 is provided with an insertion portion 12 of the attachment arm 8, and the attachment arm 8 is fastened and fixed to the insertion portion 12 with a bolt 13 so that the protruding length can be adjusted in the longitudinal direction. The air nozzle 9 is a long member in which a known nozzle piece 9a having a plurality of blowing holes (not shown) is arranged at the tip as shown in FIG. Air can be blown out evenly in the width direction by supplying air from the part (may be only from one side).
[0014]
A fixing bracket 14 for fixing the air nozzle 9 is provided at the tip of the mounting arm 8, and the fixing bracket 14 supports the air nozzle 9. Further, a flange portion 16 projecting in the horizontal direction is provided at the periphery of the suction port 6. The flange portion 16 is formed at a position that blocks the reflection direction of the air blown out from the air nozzle 9. Note that the position of the tip of the air nozzle 9 is preferably the same as or higher than the flange portion 16 in order to avoid contact with the vehicle body 1.
[0015]
Next, the operation will be described.
The vehicle body 1 that has finished the intermediate coating process (or undercoating process) is placed on the base 3 of the dust removal booth 2 as shown in FIG. The vehicle body 1 is air-polished after the intermediate coating, and the surface of the vehicle body 1 is in a state in which polishing is adhered. In this state, when a vacuum device (not shown) is operated and the robot arm 7 of the robot 4 is moved along a predetermined route preset by teaching, it adheres to the vehicle body 1 through the suction port 6 facing the vehicle body 1 in a non-contact manner. The dust that is on is reliably removed by suction. Here, since the robot arm 7 basically moves the suction port 6 in the direction in which the air nozzle 9 is arranged, dust is sucked by the air blown from the air nozzle 9 to the panel of the vehicle body 1. Even if it bounces in the opposite direction to 6, the dust bounced back by the suction port 6 that moves so as to chase in that direction is reliably sucked.
[0016]
That is, when the suction port 6 removes dust from the surface of the vehicle body 1, for example, the bonnet B as shown in FIG. 1, when the suction port 6 is located at a position facing the bonnet B and approaches a predetermined distance, the air nozzle The dust on the bonnet B is blown up by the pressure of the air blown out from the air. The blown dust is reflected on the bonnet B, sucked into the suction port 6 together with the air blown toward the suction port 6, and sucked and removed from the exhaust duct 5.
[0017]
At this time, the air blown to the bonnet B is blown to the bonnet B from the outside of the suction port 6, so that the air blown from the air nozzle 9 adversely affects the air flow in the suction port 6 before reaching the bonnet B. Rather, since the air blown from the air nozzle 9 and reflected by the bonnet B is directed in the suction direction acting inside the suction port 6, the dust blown from the bonnet B together with the reflected air Suction and removal are efficiently performed in the accelerated state. That is, the air reflection used for blowing dust on the bonnet B from the air nozzle 9 is effectively used without waste, and the dust is efficiently sucked and removed from the suction port 6.
[0018]
Here, since the flange portion 16 is provided in the suction port 6, the air blown out from the air nozzle 9 and reflected by the bonnet B does not escape to the outside of the suction port 6. Further, by providing the flange portion 16, the air blown out from the air nozzle 9 does not escape to the outside of the suction port 6, so that the outside of the suction port 6, particularly near the upper surface of the flange portion 16, as shown in FIG. The air is not adversely affected, and as a result, the air in this portion is smoothly sucked into the lower portion of the flange portion 16 as indicated by the arrow and moves around. Therefore, even if dust is scattered outside the suction port 6, it is sucked into the suction port 6 by the air that circulates from the periphery of the suction port 6 to the suction port 6.
[0019]
In this way, the robot arm 7 of each robot 4 is moved and adhered along the bonnet B shown in FIGS. 1 and 3, the roof panel R shown in FIG. 2, the front and rear fender panels F shown in FIG. The dust that is being removed is removed. The moving speed of the robot arm 7 of the robot 4 is set based on the working time determined in relation to the preceding and following processes.
Since the robot 4 is used to remove dust from the vehicle body 1 in this way, the dust removal booth 2 has one vehicle body as compared with the conventional case where only the vehicle body 1 is moved and dust is removed by a fixed dust removal device. With a length of minutes, the finished line can be made compact, and fine dust removal work can be performed along the shape of the vehicle body 1 while maintaining a certain distance from the panel surface.
[0020]
According to the experiment, when the dust removal effect is examined by attaching nylon fiber or the like and the sculpture of Kuken to the vehicle body 1, in this embodiment, compared with the conventional average removal rate of about 24%. The average removal rate was about 98%. In addition, although the visual confirmation under 800 lux was performed about the polishing, in the past, it was confirmed that it remained in a streak shape, but it could not be confirmed in this embodiment.
[0021]
The present invention is not limited to the above embodiment. For example, the number of robots arranged is not limited to two, and may be one, or may be three or more . Further, the subject of the dust is post-painting process, not limited to the pre-treatment can be applied to a line that requires a mere dust. Further, the case where the vehicle body 1 is fixed and the robot 4 is moved has been described as an example. However, the dust removal time may be further shortened by moving the vehicle body 1 as well. Moreover, although the said embodiment demonstrated the case where the air nozzle 9 was attached only to the one side of the suction port 6, the air nozzle 9 can also be attached to the other side. In this way, if both air nozzles 9 are switched by a valve or the like so that air can be ejected from either one, dust can be removed in a reciprocating manner when dust is removed from a wide area such as a bonnet. It can be shortened.
[0022]
【The invention's effect】
As described above, according to the first aspect of the present invention, dust blown from the surface of the vehicle body between the suction port and the vehicle body is drawn toward the suction port and blown out from the air nozzle. In addition, since the exhaust duct is guided together with the air reflected on the surface of the vehicle body and directed in the suction direction of the air outlet, the dust can be efficiently removed without reattaching to the surface of the vehicle body .
[0023]
In addition, the flange provided on the suction port increases the efficiency of suction of the air blown to the air nozzle into the suction port, and the air sucked from the periphery of the suction port can be smoothly guided, thus removing dust. There is an effect that can increase the rate.
[0024]
According to the second aspect of the present invention, it is possible to perform dust removal by expanding and contracting the arm by a copying operation input in advance by teaching or the like, and finely moving the suction port according to the shape of the vehicle body , There is an effect of improving the dust removal efficiency. Also, since that allows the dust without moving or reduce the movement of the vehicle body, or the body, there is an effect that can be shortened line length as compared to the case of dust while moving the vehicle body only.
[Brief description of the drawings]
FIG. 1 is a side view showing a working situation of an embodiment of the present invention.
FIG. 2 is a front view showing a situation where dust is removed from the roof according to the embodiment of the present invention.
FIG. 3 is a side view showing a situation where dust is removed from the bonnet according to the embodiment of the present invention.
FIG. 4 is a front view showing a situation where dust is removed from the fender panel according to the embodiment of the present invention.
FIG. 5 is a front view showing a fixed position state of the robot according to the embodiment of the present invention.
FIG. 6 is an explanatory view of a suction port according to an embodiment of the present invention, in which (a) is a front view, (b) is a plan view, and (c) is a side view.
FIG. 7 is an explanatory diagram showing a dust suction state according to the embodiment of the present invention.
FIG. 8 is a front view showing a positional relationship between the robot and the vehicle body according to the embodiment of the present invention.
[Explanation of symbols]
1 Body (work)
4 Robot 5 Exhaust duct 6 Suction port 7 Robot arm (arm)
9 Air nozzle 16 Flange

Claims (2)

In a suction-type dust removing device in which a bendable exhaust duct is attached to a suction port that can be disposed opposite to the surface of the vehicle body , and the suction port is brought close to the surface of the vehicle body to suck and remove dust, the suction port is provided outside the suction port. An air nozzle that blows off dust on the opposite body surface is arranged , brackets are rotatably provided on the guide rails on both side walls of the suction port, and an attachment arm that can adjust the protruding length is arranged at the insertion part of this bracket A suction type dust remover , wherein the air nozzle is attached to the attachment arm, and the suction port is provided with a flange portion extending horizontally in the periphery. The suction dust removing apparatus according to claim 1, wherein a robot is provided adjacent to the vehicle body , and the suction port is supported by an arm of the robot.

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