JPS6234633Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a suction cleaning device for suctioning and removing coating material adhering to a non-coated portion of a coated object, such as a threaded portion of a pipe joint coated with a resin lining.

Generally, when painting a non-painted object while leaving a part unpainted, it is common to hide the non-painted part with masking rubber or the like. For example, as shown in FIG.
is fitted and held in a cylindrical holding part 4 protruding from the belt conveyor 3, and a masking rubber 5 is fitted onto the other threaded part 2, so that both threaded parts 2, 2 are completely hidden. Usually, electrostatic coating is applied to prevent resin coating from being applied to each threaded portion 2, which is a non-coated portion.

However, if the non-painted part has unevenness such as the threaded part 2, a gap is likely to be formed between the threaded part 2 and the masking rubber 5, etc., and therefore, during painting, fine powder particles will be drawn from this gap. There is a risk that the paint material may enter and adhere to the threaded portion 2. Further, when removing the masking rubber 5 after painting, fine powdered paint residue tends to adhere to the threaded portion 2.
By the way, leaving the coating material on the threaded part 2, which is the unpainted part, looks bad and significantly reduces the product value, and is also undesirable from the viewpoint of the screwing effect of the threaded part 2. . Therefore, conventionally, the paint material adhering to the threaded part 2 is removed by blowing air onto the threaded part 2 or by brushing the threaded part 2 after baking.

However, such a work of removing the coating material is extremely time-consuming and significantly reduces work efficiency. Further, the removed fine powder coating material is scattered, which is unfavorable in terms of environmental hygiene.
Furthermore, it becomes difficult to recover the removed coating material, which cannot be reused, and the coating material is wasted.

The present invention was developed in view of the above-mentioned points, and it is possible to easily and efficiently remove painted materials adhering to non-painted areas, and all the removed painted materials can be recovered without polluting the environment. To provide a suction cleaning device devised to remove water.

The suction cleaning device of the present invention solves this problem.
The present invention is characterized in that it is provided with a suction space into which a non-coated part of a painted object is inserted and removed, a suction port opening into the suction space, and a suction passage connected to the suction port.

An example of this will be described below with reference to FIGS. 2 to 5. In this embodiment, threaded portions 1 at both ends, which are non-coated portions of a pipe joint 11 coated with a resin lining, are shown.
The present invention relates to an example in which the present invention is applied to a suction cleaning device for suctioning and removing fine powder coating material that has accidentally adhered to surfaces 2 and 12.

That is, this suction cleaning device has an annular peripheral wall 1.
It consists of a suction body 16 in the shape of a cylinder with a bottom and a passage body 17 in the shape of a cylinder with a bottom, which is screwed onto the suction body 16 from below.

The inner diameter of the peripheral wall 16a of the suction body 16 is set to be slightly larger than the outer diameter of the threaded portion 12 of the pipe joint 11, and the height of the peripheral wall 16a is set to be approximately the same as the length of the threaded portion 12 in the axial direction. A space surrounded by the peripheral wall 16a and bottom wall 16b of the suction body 16 is formed into a suction space 18 in which the threaded portion 12 of the pipe joint 11 can be inserted and removed from above.

Further, at the upper end of the peripheral wall 16a of the suction body 16,
an annular suction port 19 that opens into the suction space 18;
is formed along the circumferential direction. In other words, the suction port 19 connects the threaded portion 12 of the pipe joint 11 to the suction space 18.
When fully accommodated in the threaded portion 1
2 (see FIG. 2).

Further, the suction body 16 and the passage body 17 have a suction passage 20 connected to the suction port 19 . This suction passage 20 is connected to the peripheral wall 1 of the suction body 16.
6a, a plurality of first passages 21, 21, .
b is surrounded by the peripheral wall 17a and bottom wall 17b of the passage body 17, and is connected to a second passage 22 that communicates with each first passage 21 and a central part of the bottom wall 17b of the passage body 17, A third passage communicating with the second passage 22
It consists of a passage 23. The suction passage 20, ie, the third passage 23, is connected to a suitable suction machine (not shown). Note that it is desirable to select a suction device that has a high suction pressure and can be adjusted.

In addition, in the figure, 24 is a cover body fixed to the upper end of the suction body 16 to form the upper wall of the suction port 19.

With the above configuration, the paint material attached to each threaded part 12 can be removed by suction by simply inserting and removing each threaded part 12 of the pipe joint 11 into the suction space 18 while the suction machine is activated. be able to.

That is, when one threaded portion 12 of the pipe joint 11 is inserted into the suction space 18 from above,
In other words, when the position of the threaded portion 12 is gradually changed from the position shown in FIG. 3 to the position shown in FIG. During this time, the coating material adhering to the threaded portion 12 is suctioned and removed by the suction force from the suction port 19, and is further suctioned and discharged through the suction passage 20 to the suction machine. Ru. Thereafter, the threaded portion 12 is removed upward from the suction space 18, but during this time, the same suction removal action as described above is performed, and the pipe fitting 1
The coating material adhering to one of the threaded portions 12 is completely removed by suction.

In this way, one threaded portion 12 of the pipe joint 11
After cleaning by suction, turn the pipe fitting 11 over and
By suction cleaning the other threaded portion 12 in the same manner as described above, the threaded portions 12 at both ends of the pipe fitting 11,
12 can be cleaned by suction.

Therefore, simply by inserting and removing each threaded portion 12 of the pipe joint 11 into and from the suction space 18, the paint material adhering to each threaded portion 12 can be removed by suction.
The cleaning work No. 2 can be performed much more easily and efficiently than the conventional brushing work and the like. Furthermore, since it is easy to automate the insertion and removal of each of the threaded portions 12 described above into the suction space 18, if the suction cleaning device according to the present invention is used, each threaded portion 12 of the pipe joint 11 can be inserted and removed automatically. The cleaning work can be automated, and the manufacturing efficiency of the pipe joint 11 can be greatly improved.

In addition, since all the paint material that is the resin material that has been suctioned and removed can be recovered, this collected paint material can be reused.
The paint material adhering to the surface will not be wasted. Furthermore, there is no problem in terms of environmental hygiene such as the environment being contaminated by the scattered fine powder coating material that has been removed.

Furthermore, since the coating material adhering to each threaded portion 12 can be easily and reliably removed as described above, each threaded portion 12 can be cleaned well even if the ability to cover the threaded portion 12 with masking rubber or the like is somewhat poor. Therefore, it is possible to provide a pipe joint 11 that has a similar structure, and the masking rubber and the like can be further simplified. That is, when applying electrostatic coating to the pipe fitting 11 on the line, there is no need to force each threaded part 12 to be completely hidden as shown in FIG. It is enough if it can be prevented. For example, as shown in FIG. 5, one end of the pipe fitting 11 is inserted and held in a holding part 14 protruding from the belt conveyor 13, and the opening of the other end of the pipe fitting 11 is closed. The resin lining can be painted while the masking rubber 15 is covered with a simple masking rubber 15 that is sufficient to coat the resin lining.

By the way, a plurality of types of suction body 16 are prepared according to the diameter and shape of the pipe fitting 11, and the suction body 16 is selected to suit the threaded portion 12 of the pipe joint 11 to be suction-cleaned. It is screwed onto the peripheral wall 17a of No. 17. In this way, just by replacing the suction body 16, good suction cleaning can always be performed regardless of the shape of the pipe joint 11, which is convenient.

In the above embodiment, the suction space 18 is formed in such a shape that its lower end side is closed by the bottom wall 16b of the suction body 16, and the annular suction port 19 is formed in the suction space 1.
Although the opening is made on the upper end side of 8, for example, suction space 1
8 may be formed to be penetrating in the vertical direction. In this way, the entire pipe fitting 11 is moved in a certain direction (downward), and the lower threaded part 12 is moved inside the suction space 18, and then the upper threaded part 1 is moved inside the suction space 18.
2 in sequence, both threaded portions 1
2.12 suction cleaning can be performed.

Further, the suction port 19 may be formed in the shape of a slit that is discontinuous in the circumferential direction, and may be opened over the entire vertical width of the suction space 18. If you do this,
When the threaded portion 12 is held in the suction space 18 as shown in FIG. 2, the entire portion of the threaded portion 12 from the lower end to the upper end is simultaneously subjected to a suction action.

Furthermore, in the embodiment, the suction passage 20
Although the suction passage 20 is formed in the suction body 16 and the passage body 17, the suction passage 20 can also be constructed by a pipe.

Further, the suction cleaning device according to the present invention has a pipe joint 1 coated with a resin lining, as in the above embodiment.
This device is suitably used not only for suction cleaning the threaded portions 12, 12 at both ends of the same, but also for suctioning and removing paint materials, dust, etc. that have unexpectedly adhered to the non-coated parts of various painted objects.

As is clear from the above explanation, according to the suction cleaning device of the present invention, paint material that has accidentally adhered to the unpainted part of a painted object can be removed from the suction space by simply inserting and removing the unpainted part into the suction space. Since cleaning can be carried out by suction through a suction port that opens at the bottom, the cleaning work of non-painted parts can be performed much more easily and efficiently than brushing work, etc., and furthermore, the automation can be easily realized. I can do it.

Moreover, all the paint material that has been suctioned off can be recovered and reused.

Furthermore, environmental hygiene problems such as environmental pollution caused by scattering of the removed coating material do not occur.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal side view showing the painted state of a conventional pipe joint, Fig. 2 is a longitudinal side view showing an embodiment of the suction cleaning device according to the present invention, and Fig. 3 shows a different effect from Fig. 2. Fig. 4 is a vertical cross-sectional side view similar to Fig. 2 showing the state, Fig. 4 is a half-cut cross-sectional plan view taken along the - line in Fig. 2, and Fig. 5 shows the painted state of the pipe joint when using the suction device according to the present invention. FIG. 11... Pipe joint (painted part), 12... Threaded part (unpainted part), 18... Suction space, 19... Suction port, 20... Suction passage.

Claims (1)

[Scope of utility model registration request] Suction of a non-painted part, characterized by having a suction space into which a non-painted part of a painted object is inserted and removed, a suction port opening into the suction space, and a suction passage connected to the suction port. Cleaning equipment.