JPH0242392Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is designed to collect fumes generated during welding work, especially when manual arc welding is performed on a bed plate, so that the welding work can be carried out in an appropriate enclosure without inconvenience. The present invention relates to a welding fume collection device configured to completely collect fume filling the enclosure by suction with a blower.

During arc welding, the coating material on the surface of the welding rod decomposes into a large amount of fume, which is dispersed into the air. Exposure to these substances in large quantities for a long period of time can be harmful to your health. In particular, when welding not only the welding rod but also workpieces that are galvanized, lead-coated, or contain lead (non-ferrous metals), fume becomes even more harmful. Therefore, when performing arc welding work manually on a tabletop, it is necessary to always ensure good ventilation in the welding area and to use an appropriate dust mask to avoid inhaling harmful fumes. No. However, since wearing a dust mask increases the burden on the worker, it is difficult to force the worker to do so, especially in cases other than welding work in narrow spaces such as inside boilers and tanks. In addition, even though it is called ventilation, if the fume is simply released outdoors, there is a strong possibility that it will promote air pollution. Therefore, when performing welding as described above, a hood directly connected to a dust collection device is generally provided near the welding point, and the operation of intensively suctioning and collecting the fumes that are being scattered is carried out in parallel.

That is, as conventional collection devices of this type, those shown in FIGS. 1 and 2 are known. Figure 1 shows
On both longitudinal ends of the base plate 1, that is, on the right side as viewed from the worker 2, there are fans 3 for blowing fume to one side, and on the left side there is a relatively large fan 3 for collecting the fume blown towards it. A hood 4 is arranged, and a dust collection device 6 is installed through the hood 4 and the duct 5.
It is collected internally. Note that 7 is an object to be welded, and 8 is a welding torch. Further, in FIG. 2, a relatively small hood 4' connected to a dust collector 6' via a duct 5' is placed directly above the vicinity of the welding point W, and as the welding point W moves, the hood 4' also moves. The dust is moved and collected into a dust collecting device 6' via the hood 4' and the duct 5'. In the former case, there is no need to move the hood 4, so there is no particular problem with workability, but the fume is likely to be dispersed in the workplace, the blowing from the fan 3 makes winter work cold, and the installation area of the equipment is reduced. However, in the latter case, it is not effective unless the hood 4' is separated from the welding point W by more than a certain distance and is not moved as the welding point W moves. Since the fume is thin, the work is complicated, and since the fume itself is highly dissipative, there is a problem that the collection effect is not sufficient.

The present invention was developed after intensive study to solve all of these problems.It is a welded fume collection device with a simple structure that can completely collect fume even in a relatively narrow space without impairing workability. The purpose is to provide equipment.

However, the present invention that has achieved these objectives is to surround the object to be welded with a cover member to prevent the fume generated during welding work from spreading, and to
The welding fume collection device uses a blower to remove the fume by suction, and the cover member is configured to be assembled and disassembled from left and right standing side walls, a rear standing side wall, and a ceiling plate, and the left and right standing side walls are assembled and disassembled at will. One of the side walls is a stationary side wall and the other is a movable side wall, a ceiling plate is slidably engaged with the stationary side wall, and a movable side wall is slidably engaged with the ceiling plate, and the front side facing the welding operator is provided. The gist lies in that an accordion door that can be opened and closed is provided on the stationary side wall, and a blower that is connected to a telescopic duct is attached to the stationary side wall.

The configuration and effects of the present invention will be explained below based on the drawings of the embodiments, but the following description is not intended to limit the present invention. In the following description, the above-mentioned ceiling plate will be referred to as a movable ceiling.

FIG. 3 is a partially cutaway schematic perspective view of the welding fume collecting device according to the present invention attached to the base plate 1, and FIG. 4 is a sectional view taken along the line -- in FIG. 3. In these figures, the device 10 includes a box-shaped cover member 1
A blower 12 is attached to one stationary side wall 11c, and a telescopic duct 13 is connected to the blower 12. The cover member 11 has a stationary side wall 11
The movable side wall 11b is attached to the movable side wall 11b along the inside of the two gate-shaped members 14, 14' which are attached to and arranged in parallel to each other.
and a movable ceiling 11a are engaged so that they can move forward and backward in the directions of arrows A and B, respectively. Furthermore, it is recommended to use light shielding plates for the movable ceiling 11a and movable side walls 11b in consideration of shielding light from the surroundings, but the effects of the present invention will not be diminished by not using them. Of course. To explain this configuration in more detail, the portal members 14, 14' are as follows:
Arm members 15, 15' are provided on the upper outer side of the stationary side wall 11c ("outer" and "inner" in the following description mean the outer side and the inner side, respectively, as seen from the cover member 11).
At the same time, the arm members 16, 16' are erected at positions slightly apart from the stationary side wall 11c, and the upper parts of the arm members 15, 15' and the leg members 16, 16' are attached to the arm members 17, 17'. It is constructed by connecting. Further, grooves 18 and 18' are provided at the same height position on the inside of each upper part of the movable side wall 11b and the stationary side wall 11c over the entire length of each side wall.
A plurality of rollers 19, 19' are housed in each roller 8'. Also, the stationary side wall 11c and the movable side wall 11
The uppermost end of b is bent inward so that a slight gap 20, 20' is created between the upper surfaces of the rollers 19, 19'. By placing a movable ceiling 11a in each of these gaps 20, 20', the ceiling 11a can be easily moved forward and backward in the directions of arrows A and B. Furthermore, a plurality of door rollers 21 are attached to the inside of the lower part of the movable side wall 11b so that the movable side wall 11b can easily move forward and backward on the base plate 1 in the directions of arrows A and B. Also, movable ceiling 11a
Handles 22 are attached to the outer sides of both ends of the movable side wall 11b in the advancing and retreating direction, so that the operator 2 can easily operate the movable ceiling 11a and the movable side wall 11b.

Accordion-type doors 23, 23' are attached to both longitudinal ends of the stationary side wall 11c to prevent absorption of outside air when the blower 12 is in operation, and to prevent fume from being absorbed by the blower as small as possible. It is designed for efficient suction. Furthermore, if the accordion-type doors 23, 23' are also made of a light-shielding material, the light-shielding effect from the surroundings can be further enhanced. Furthermore, the accordion door 23', which is the standing side wall on the back side when viewed from the welding worker's side,
It may be a flat member that locks onto the stationary side wall 11c.

With the above configuration, the movable ceiling 11a and the movable side wall 11b are formed so that they can freely and easily move forward and backward in the directions of arrows A and B, respectively, independently of each other with respect to the stationary side wall 11c and the base plate 1. That is, movable ceiling 1
1a and the movable side wall 11b constitute a door that can be freely opened and closed with respect to the cover member 11 independently of each other. Therefore, the worker 2
When setting the workpiece 7 on the base plate 1, the workpiece 7 can be easily taken in and out of the cover member 11, and the workpiece 7 can be easily moved in and out of the cover member 11 after setting and during welding.
Since the cover member 1 can be completely covered, the fume generated during welding can be completely covered by the cover member 1.
1 does not scatter to the outside, and all of the fume is sucked from the blower 12 and sent to the duct 1.
3 to a designated area outside (dust collection equipment not shown in the diagram or main dust collection duct installed on the factory ceiling)
The complete collection of hume takes place here.

Further, in the above embodiment, the welding work is performed only from one side (the side in the direction of arrow A), but a partition is attached near the center of the inside of the cover member 11 to divide the space inside the member 11 into two directions in the directions of arrows A and B. By dividing it, welding can be performed simultaneously from the opposite side (the side in the direction of arrow B). Needless to say, in this case, two blower suction ducts are required.

Since the welding fume collection device of the present invention is constructed as described above, various effects summarized below can be obtained.

The fumes generated during manual arc welding can be completely collected, making it possible for workers to reduce their physical and
Completely free from mental pain.

Dust regulations can be easily addressed.

Since the device can be set on one end of the base board in a manner that allows it to be assembled and disassembled, there are no restrictions on where it can be installed, making it highly versatile.

Since the upper wall and side wall of the apparatus are constructed so that they can be easily opened by manual operation, the objects to be welded can be taken out easily, and workability during welding is not impaired.

Since the structure of the device is very simple and the operating load capacity of the blower can be reduced, costs can be reduced.

[Brief explanation of the drawing]

1 and 2 are schematic explanatory diagrams of a conventional welding fume collection device, FIG. 3 is a partially cutaway schematic perspective view of a welding fume collection device according to the present invention, and FIG. 4 is the same as that shown in FIG. FIG. 1... Base board, 2... Operator, 7... Work to be welded,
10... Collection device, 11... Covering member, 12...
Blower, 13... duct.

Claims (1)

[Scope of utility model registration request] A welding fume collection device that surrounds a part to be welded with a cover member to prevent the fume generated during welding work from spreading and removes the fume by suction with a blower, the cover member having left and right upstanding side walls, It is constructed so that it can be assembled and disassembled from a rear standing side wall and a ceiling plate, and one of the left and right standing side walls is a stationary side wall and the other is a movable side wall, and a ceiling plate is attached to the stationary side wall, and the ceiling plate is attached to the stationary side wall. The stationary side wall is provided with an accordion type door that can be freely opened and closed, and the stationary side wall is provided with an accordion type door that can be freely opened and closed, and the stationary side wall is provided with an accordion type door that can be freely opened and closed. A welding fume collection device characterized by being equipped with connected blowers.