JPH086520Y2 - Masking material - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a masking member, and more particularly to a masking member having a permanent magnet and formed in the same shape as a portion of a member to be treated which is not desired to be surface treated.

[0002]

2. Description of the Related Art Conventionally, when a surface treatment such as painting or sandblasting is performed, a masking member formed in the same shape as the portion to be treated is not formed on the member to be treated. It is installed and processed. The applicant of the present application has also invented and applied for a masking member having a permanent magnet and formed in the same shape as the portion of the member to be processed which is not desired to be surface treated (Japanese Patent Application No. 1-128475).
issue). In this masking member, the permanent magnet is formed in the same shape as the portion of the member to be treated which is not desired to be surface treated, and surface treatment such as painting is performed by adsorbing to the portion of the member to be treated with the magnetic force of the permanent magnet. To prevent.

[0003]

However, the above conventional masking member has the following problems. The masking member according to Japanese Patent Application No. 1-128475 has an excellent effect in preventing surface treatment such as painting, but for example, an engaging portion that can be engaged with a hole formed in a member to be treated. When forming a permanent magnet, the permanent magnet must be cut. Cutting permanent magnets is time-consuming and hinders improvement in productivity. The above problems can be solved by using a permanent magnet made of synthetic resin (for example, synthetic rubber). However, there is another problem that the synthetic resin permanent magnet is easily damaged and cannot be reused under a bad environment such as high temperature and use of chemicals. There is also a method of forming a permanent magnet with a sintered metal, but there is a problem that a sintered metal material for a permanent magnet is expensive and uneconomical. Therefore, it is an object of the present invention to provide a masking member that is easy to process, can be used in a bad environment, and is inexpensive.

[0004]

In order to solve the above problems, the present invention has the following configuration. That is, a hole or a protrusion provided with a permanent magnet and formed in the same shape as a portion of a member to be processed which is not desired to be surface-treated , and formed on the surface to be treated.
In a masking member having a protrusion and / or a recess that can be engaged with a portion or the like, the entire surface of the permanent magnet is
A cover including a member that forms a protrusion and / or a recess
Is covered by a member and at least the protrusion
The member forming the starting portion and / or the concave portion leaks magnetic flux
It is characterized by comprising a member .

[0005]

[Operation] The operation will be described. Since the permanent magnet is covered with the cover member, the masking of the portion can be performed by forming the shape of the cover member in the same shape as the portion of the member to be processed which is not subjected to the surface treatment without processing the permanent magnet. . Also, since the permanent magnet is covered with the cover member,
It is possible to protect the permanent magnet even in a bad environment.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. The first embodiment will be described with reference to FIG. Reference numeral 12 is a permanent magnet, which is a cylindrical metal (for example, ferrite) magnet. The permanent magnet 12 is preferably one that can withstand high temperature (for example, about 180 ° C.), alkali, and acid. However, the above conditions are unnecessary depending on the use environment, and it is also possible to use a permanent magnet made of synthetic rubber. Reference numeral 14 denotes a protrusion member, which is made of a magnetic material (for example, a magnetic stainless material). The protruding member 14 has a protruding portion 16 formed on the lower portion. The protrusion 16 is formed in a size that can be engaged with a hole formed in a member (not shown) to be processed. The protruding member 14 is arranged in contact with the lower surface of the permanent magnet 12. The protruding member 14 is formed by pressing. The material and the like of the protruding member 14 are determined in consideration of the usage environment of the masking member 10, the type of surface treatment, the processing mode and the like. The protruding portion 16 of the protruding member 14 projects downward from the lower end surface of the cover member described later. By selecting the protrusion member 14, the protrusion amount of the protrusion 16 can be arbitrarily set.

A cover member 18 is made of a magnetic material (for example, a magnetic stainless material). The cover member 18 is formed into an inverted cup shape by press working, and is formed in the same shape as the portion of the member to be processed which is not desired to be surface-treated. In addition, the cover member 18 is a permanent magnet 12,
The projection member 14 and the like are covered. The material and the like of the cover member 18 are determined in consideration of the usage environment of the masking member 10, the type of surface treatment, and the like. Reference numeral 20 denotes a spacer member, which is inserted between the protruding member 14 and the cover member 18.
The spacer member 20 is made of a non-magnetic material (for example, a non-magnetic stainless material) and prevents the protrusion member 14 and the cover member 18 from contacting each other. The spacer member 20 allows magnetic flux to leak between the projecting member 14 and the cover member 18, and the masking member 10 can be magnetically attracted to the member to be processed. Although the spacer member 20 is press-fitted and fixed to the opening edge of the cover member 18 in this embodiment, it may be fixed with an adhesive or the like depending on the use environment.

A masking member 1 having the above-mentioned structure
No. 0 is attached to a portion on the treated surface of a member to be subjected to surface treatment such as painting or sandblasting which is not desired to be subjected to surface treatment such as painting or sandblasting. First
In the case of the embodiment, the projecting portion 16 of the projecting member 14 is inserted into and engaged with the hole formed in the site, and the masking member 10 is fixed to the site by the magnetic force of the permanent magnet 12. If a predetermined surface treatment is performed in this state, the surface treatment of the surface to be treated is performed except for the portion covered by the masking member 10.
After the surface treatment is completed, the masking member 10 may be removed, and the masking member 10 can be reused. For example, even if the surface treatment is sandblasting, damage is suppressed by using the hard cover member 18,
Can be adopted.

The second embodiment will be described with reference to FIG.
The same members as those of the first embodiment are designated by the same reference numerals as those of the first embodiment, and the description thereof will be omitted. In the first embodiment, the protruding portion 16 for engaging with the member to be processed is provided on the protruding member 14, but in the second embodiment, the protruding portion 1 is provided.
6 is projected on the closed upper end surface of the cover member 18. The protrusion 16 is formed so as to project upward from the upper end surface at the same time when the cover member 18 is formed into a reverse cup shape by press working. The masking member 10 also has the protrusion 16 of the cover member 18 inserted into and engaged with a hole formed in a portion where surface treatment is not desired to be performed on the treated surface of the member to be treated. The masking member 10 is fixed to the site. In the case of the second embodiment, when the masking member 10 is fixed to the member to be processed, the lower surface of the spacer member 20 is exposed as the surface. Therefore, the material of the spacer member 20 is also determined in consideration of the usage environment, the type of surface treatment, and the like.

A third embodiment will be described with reference to FIG.
The same components as those of the preceding embodiment are designated by the same reference numerals as those of the preceding embodiment, and the description thereof will be omitted. In the first embodiment and the second embodiment, the protrusion 16 for engaging with the member to be processed is provided, but in the third embodiment, it is associated with the convex portion (not shown) protruding from the member to be processed. The masking member 10 is compatible. In the third embodiment, the recess 22 is provided in the closed upper end surface of the cover member 18.
The recess 22 is formed so as to project downward from the upper end surface, that is, inward when the cover member 18 is formed into an inverted cup shape by press working. This masking member 1
No. 0 is also a masking member by the magnetic force of the permanent magnet 12 by attaching and engaging the concave portion 22 of the cover member 18 to the convex portion protruding on the portion to be subjected to no surface treatment on the treated surface of the member to be treated. Fix 10 to the site. Also in the case of the third embodiment, when the masking member 10 is fixed to the member to be processed, the lower surface of the spacer member 20 is exposed as the surface. Therefore, the materials of the cover member 18 and the spacer member 20 are determined in consideration of the usage environment, the type of surface treatment, and the like. The spacer member 20 in the second and third embodiments is inserted to leak magnetic flux between the opening edges of the lower surface of the cover member 18.

A fourth embodiment will be described with reference to FIG.
The same components as those of the preceding embodiment are designated by the same reference numerals as those of the preceding embodiment, and the description thereof will be omitted. The masking member 10 of the fourth embodiment is provided with a protrusion 16 for engaging with a member to be processed provided below the protrusion member 14 covered with a cover member 18, and a protrusion protruding from the member to be processed. This is an example in which a concave portion 22 that can be engaged with the concave portion is provided in the closed upper end surface of the cover member 18. Therefore, the masking member 101 can be engaged with any of the holes and the protrusions provided in the member to be processed. Further, as shown in FIG. 4, the protrusions 16 and the recesses 22 of the masking members 10 can be engaged with each other in a concavo-convex manner and can be attracted by the magnetic force of each other, which is convenient for storage. Having thus various described the preferred embodiments of the present invention, the present invention is of a can rather than being limited to the embodiments described above, may further subjected to many modifications without departing from the spirit of the present invention is Of course.

[0012]

When the masking member according to the present invention is used, the permanent magnet is covered with the cover member, so that the shape of the cover member is not processed and the surface of the member to be processed is not treated. By forming the same shape, it is possible to mask the site, so the permanent magnet is not processed as much as possible, and the shape of the masking member is surface-treated by processing the cover member (for example, pressing). It can be easily formed into the same shape as the undesired portion, and the productivity of the masking member can be improved. Further, since the permanent magnet is covered with the cover member, it becomes possible to protect the permanent magnet even in a bad environment.
It can be easily processed into a predetermined shape and can withstand use in adverse environments.
Further, a remarkable effect such as the realization of an inexpensive masking member can be achieved.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of a masking member according to the present invention.

FIG. 2 is a sectional view showing a second embodiment of a masking member according to the present invention.

FIG. 3 is a sectional view showing a third embodiment of a masking member according to the present invention.

FIG. 4 is a sectional view showing a fourth embodiment of a masking member according to the present invention.

[Explanation of symbols]

 10 Masking Member 12 Permanent Magnet 18 Cover Member

Claims (1)

[Scope of utility model registration request] 1. A permanent magnet is provided, is formed in the same shape as a portion of a member to be processed which is not desired to be surface-treated , and is engageable with a hole or a convex portion formed on the treated surface.
In the masking member in which the protrusions and / or recesses are formed , the entire surface of the permanent magnet has the protrusions and / or recesses.
Covered by a cover member including a member to be formed
Together with at least the portion forming the protrusion and / or the recess
A masking member, wherein the member is a member that leaks magnetic flux .