JPH086516Y2 - Mixing jig for painting - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a masking jig used to prevent paint from adhering to the inner surface of a work when coating the outer peripheral surface of a cylindrical work. It is about.

[Conventional technology]

For example, when black coating is applied to the knuckle of an automobile part, in order to prevent the coating from adhering to the inner surface of the hole of the knuckle, conventionally, a masking seal is manually attached to both sides of the through hole, and the masking seal is peeled off after coating. I am trying.

Therefore, not only is it time-consuming and time-consuming to attach and peel the masking seal, but the masking seal is disposable and economically disadvantageous.

In order to improve these points, the actual development of Sho 58-195677
Japanese Patent Publication proposes a masking jig for coating as shown in FIG. This coating masking jig coats the outer surface of the work W with the coating masking jigs 11 attached to both ends of the through hole of the work W of the hollow cylinder, and after the coating, the masking jig 11 is removed from the work W. It is to be removed and reused.

As shown in FIG. 4, this masking jig 11 has a magnet 13 provided on a main body 12 made of a flexible material, and when mounted on a work W shown in FIG. The magnetic force acting between the jig 13 and the magnet 13 tries to maintain the mounted state.

[Problems to be solved by the device]

The masking jig described in the above publication is easy to attach and detach and can be reused. However, in order to maintain the state of being attached to the work W, the magnet 13 attached to the masking jig 11 is used.
The work W is attracted by the magnetic force of, and the main body 12 made of a flexible material is interposed between the two.
Since the magnetic force is inversely proportional to the square of the distance between the magnetic poles, a strong magnet is required to hold the masking jig 11 on the work W with the magnetic force, and the work may be strengthened. Further, the work which is not a magnetic body cannot be used unless another holding means is provided.

The present invention solves the above-mentioned problems of the prior art, and provides a masking jig for painting which can be held at a predetermined position even if a magnet having a weak magnetic force is used, and can be used for a non-magnetic work. That is the purpose.

[Means and Actions for Solving the Problems]

The present invention is directed to a main body having a flange surface facing the end surface of a hollow work and a cylindrical portion inserted into a through hole of the work, a flange surface facing the other end surface of the work, and a tip portion of the cylindrical portion of the main body. A masking jig for painting, which comprises a sub-main body having a joint portion that comes into contact with the main body, and a movable magnetic body having a magnet and a spring added to the other of the main body and the sub-main body.

When the cylindrical portion of the main body is inserted into the work to be positioned and the sub-main body is brought into contact with the cylindrical portion protruding from the opposite side of the through hole,
The work is sandwiched and attached with one touch by the magnetic force acting between the magnet and the magnetic body arranged in the main body and the sub body. In this case, even if there is a processing tolerance in the width of the work, since the magnetic body is movable, the magnetic body is attracted by the magnet against the spring force to bring them into close contact.

The end faces around the through-hole of the work are covered with the flanges of the main body and the sub-main body, respectively, and are pressed by the magnetic force acting between the magnet and the magnetic body, and when the work is coated in this state, Prevents paint from penetrating through holes in the workpiece.

Since the main body and the sub-body of the masking jig are magnetically held, they can be easily removed from the work after painting and can be used repeatedly as they are.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of an embodiment of the present invention in use, and FIG. 2 is a front view showing a state in which a jig is separated.

The masking jig for painting is a cylindrical part shown in Fig. 2 (A).
A main body 1 provided with 1a, and a sub-main body 2 having a concave portion 2a shown in FIG. 2 (B) and a magnet 8 arranged at a portion in contact with the bottom surface thereof
These jigs 1 and 2 are positioned by inserting the tubular 1a of the main body 1 into the through hole of the hollow work W such as a knuckle as shown in FIG. The concave portion 2a of the sub-main body 2 is fitted and positioned in the cylindrical portion 1a protruding from the opposite side of the through hole, and is attached to the work W by the magnetic force acting between the magnet 8 and the main body 1.

As shown in FIG. 1, the work W of the main body 1 and the sub-main body 2
Urethane rubber annular packings 7 and 7 are adhered and attached to the flange portion facing the end face of the magnet 8, and the surface of the magnet 8 attached to the sub-main body 2 is coated with epoxy resin 9. There is. At the central portion of the tubular portion 1a of the main body 1, a sliding body in which a rod 4 is connected to a block 3 made of a magnetic material such as steel is arranged at a position facing the magnet 8 of the sub-main body 2. Is provided with a screw 4a, and a square nut 5 mounted to the main body 1 so as to be able to move up and down is screwed with a spring 6 interposed. 3a is a hexagonal hole provided on the end face of the block 3, and 10 is a cap.

Next, the operation of the masking jigs 1 and 2 will be described.

The tubular portion 1a of the main body 1 shown in FIG. 2 (A) is inserted into the workpiece W with the through hole of the workpiece W as a guide to be positioned, and the sub body 2 is attached to the tubular portion 1a protruding from the opposite side of the through hole. Recess 2a
Are fitted and positioned, and attached to the work W with one touch by the magnetic force acting between the magnet 8 and the block 3.

Both end surfaces around the through hole of the work W are respectively the main body 1
And is covered with the packing 7 attached to the collar portion of the sub-main body 2, and is pressed by the magnetic force acting between the magnet 8 and the block 3.

In this case, it is preferable that the magnet 8 and the block 3 are in close contact with each other or have an extremely small interval. However, since the width of the work W has a manufacturing tolerance in manufacturing, it is necessary to absorb this tolerance and keep the gap between the magnet 8 and the block 3 within a desired range.

When the width of the work W is larger than the reference size, when the sub-main body 2 is attached, there is a clearance gap between the magnet 8 and the block 3, and if it is left as it is, the attraction force of the magnet 8 is extremely weak. Become. In this case, since the block 3 of the main body 1 is provided with the hexagonal hole 3a, the block 3 is turned with a hexagonal wrench, and the square nut 5 is retracted with the screw 4a to weaken the force of the spring 6. As a result, the block 3 is attracted to the magnet 8 against the force of the spring 6, and a desired pressing force can be applied to the work W sandwiched between the main body 1 and the sub-main body 2.

After painting the work W to which the main body 1 and the sub-main body 2 are attached, the main body 1 and the sub-main body 2 are removed. Since the through hole of the work W is sealed by the packing 7, the paint does not enter the hole, and the paint does not enter the fitting part and the movable part of the main body 1 and the sub-main body 2. 1 and the sub body 2 can be repeatedly used as they are.

Although the movable block 3 is provided in the main body 1 and the magnet 8 is provided in the sub-main body 2 in the above-described embodiment, these arrangements are relative, and the block and the magnet in the main body and the sub-main body are arranged. Of course, the reverse arrangement is also possible.

[Effect of device]

INDUSTRIAL APPLICABILITY The present invention has an effect that a masking jig for painting can be obtained which can be used for a work which is not a magnetic body by using a magnet having a weak magnetic force and which can be easily attached and detached and can be repeatedly used.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention.
The figure is a cross-sectional view showing a usage state, FIGS. 2 (A) and 2 (B) are front views in a disassembled state, FIGS. 3 and 4 show a conventional jig, and FIG. A diagram showing the usage state of the ingredient,
FIG. 4 is a sectional view of the jig. 1: Main body, 1a: Cylindrical part 2: Sub-main body, 2a: Recessed part 3: Magnetic block, 3a: Hexagon socket 4: Rod, 5: Square nut 6: Spring, 7: Packing 8: Magnet

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A main body having a collar surface facing the end surface of a hollow work and a tubular portion inserted into a through hole of the work, a collar surface facing the end surface of the workpiece, and the tip of the tubular portion of the main body. A masking jig for painting, characterized in that a movable magnetic body having a magnet and a spring added to the other is disposed in one of the main body and the sub-main body. .