JPH079800Y2 - cap - 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 cap mainly used in a shot blasting process and an exterior coating process in the production of recycled cans of drum cans.

[0002]

2. Description of the Related Art A conventional masking cap, as shown in FIG. 4, has a cover plate 1 and a stud 2 on the periphery of the back surface of the cover plate 1.
A pair of spring steel bullets 4 attached at their ends via
And an engaging portion 5 having a dogleg shape bent at the tip of both bullet pieces 4 so as to project in the peripheral direction of the cover plate 1, or as shown in FIG. The back surface of the cover plate 1, a spring steel mounting piece 6 fixed via a plurality of studs 2 on a line crossing the center of the cover plate 1, and a bifurcated ammunition projecting from both sides of the mounting piece 6. One composed of a piece 4 ′ and an engaging projection 7 provided on the middle surface of both bullet pieces 4 ′, and as shown in FIG. 6, a lid plate 1 and a tack 2 on the back surface of the lid plate 1. Both ends are moved in and out of a predetermined range via the adjustment (cover plate 1
There is a substantially C-shaped bullet piece 4 '' which is fixedly secured to the slot 3 (through the stud 2), and the opening of the mouthpiece is used for the reproduction shot blasting work of the drum can or the exterior coating work. While pushing the bullet pieces 4, 4 ′, 4 ″ onto the base, engage the engaging portion 5 or the protrusion 7 with the mouthpiece, or press the bullet piece 4 ″ under pressure to cover the mouth of the mouthpiece with the lid plate 1. U

[0003]

According to the above structure, when the bullet pieces are bifurcated, when they are put in the container, the bullet pieces are entangled and cannot be taken out smoothly, and when the cap is set on the mouthpiece. , If one of the bullets fits into the mouth of the mouthpiece, and the other bullet lies outside the mouth of the mouthpiece and cannot be pushed in, both bullets fit into the mouth of the mouth at the same time. There was a problem that it took a great deal of time to align the position where it got stuck.

Particularly, when the tips of the bifurcated bullets are not largely released inward (shown in FIG. 5 ), it is difficult to fit them, and the distance between the tips of both bullets must be corrected each time.

Further, since the cap is prevented from coming off by the projection, there is a problem that the projection is caught on the edge of the opening portion of the mouthpiece so that it is hard to fit and is hard to come off.

Further, the lid plate has a plate thickness of 0.4 to 0.6 mm.
Since it uses a thin material, it can only be used in the painting process, limiting its use.

Therefore, an object of the present invention is to enable the fitting and removal to be performed smoothly, to prevent the bullet pieces from being entangled even when stored in a container, and also to be used for the shot blasting process other than the painting process. Is to provide a cap that has been made.

[0008]

In order to solve the above-mentioned problems, the present invention proposes a metallic cover plate and a back plate of the cover plate which is fixed to the back face of the cover plate by means of studs in a direction opposite to the front face of the cover plate. A cap made of a bifurcated spring steel bullet piece having an engaging portion that protrudes and bulges outward in the middle, and the tips of the bullet pieces project inwardly toward each other, and This is a configuration in which a protruding portion that overlaps is provided.

[0009]

[Function] During the shot blasting process and the exterior coating process accompanying the reproduction of the drum can, the bifurcated bullet is pushed into the opening of the mouthpiece, the engaging portion is engaged with the edge of the opening, and the mouthpiece is covered by the cover plate. U

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, 11 is a cover plate. The lid plate 11 includes a top wall 12 and a peripheral wall 13 that is continuous from the peripheral edge of the top wall 12 and projects toward the back surface of the top wall 12, and is manufactured by pressing a metal plate.

Further, the lid plate 11 is provided with an engaging portion 15 fixed to the back surface of the top wall 12 via a stud 14 so as to project in a direction opposite to the back surface of the top wall 12 and to bulge outward in the middle. A bifurcated spring steel bullet piece 16 is provided. In the illustrated case, the bifurcated bullet piece 16 is connected from both ends of the attachment piece 17 fixed to the top wall 12 via the tack 14, but the attachment pieces connected from separate bullet pieces may be fixed.

[0013] The engagement portion 15, when the top wall 1 2 is in contact with said cap A top edge of the push the Ryotamahen 16 to opening a mouthpiece A, press immediately after passing through the opening a inner edge of and returned to the open <br/> port a are rather is bent-shape so as to engage in.

Further, projecting portions 18 which project inwardly from each other and overlap each other are connected to the tips of both bullet pieces 16. The gap between the facing surfaces in the overlapping portion of the projecting portion 18 is made as small as possible so that the bullet pieces 16 are not entangled with each other.

In addition to the large caliber cap shown in FIG. 1, there are caps for the small caliber cap shown in FIG. 3, and in the case of the small caliber cap, the facing interval between both bullets 16 becomes small. For this reason, both projecting portions 18 are bent in an arc shape so that both bullet pieces 16 can be smoothly contracted.

Since the cap is used (also used) in the shot blasting process in addition to the painting process, the cover plate 11 is thickened to have strength, and the impact of shot particles can be endured by using iron tacks. In addition, as shown in FIG. 1, the elastic member 1 for cushioning and sealing made of rubber or the like is formed on the entire circumference of the inner corner of the bending coupling of the top wall 12 and the peripheral wall 13.
If 9 is provided, it is possible to prevent paint and shot particles from entering the drum can.

[0017]

[Effect] As described above, according to the cap of the present invention, the projecting portions are connected to both projecting pieces, and the opposite ends of the projecting portions are overlapped. Entanglement can be prevented. Therefore, the cap can be easily taken out.

Further, since the projecting portion is provided on each bullet piece, when the cap is attached, the opening edge of the mouthpiece is caught by the bullet piece, and one bullet piece is inside the opening, and the other bullet piece is outside the opening. It is possible to eliminate the inconvenience of being located at.

Further, when the coating process and the shot blasting process are continuous in a line, the cap is attached to the mouthpiece with one touch before the coating process is started, and the cap is replaced with another cap before proceeding to the shot blasting process. No need. For this reason, it is not necessary to replace the cap, which is troublesome, and the efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a vertical sectional front view showing a state in which the cap is set.

FIG. 3 is a vertical sectional front view showing a cap of another embodiment.

FIG. 4 is a vertical sectional front view of a conventional cap.

FIG. 5 is a vertical sectional front view of a conventional cap.

FIG. 6 is a vertical sectional front view of a conventional cap.

[Explanation of symbols] 11 cover plate 12 top wall 13 peripheral wall 14 stud 15 engaging portion 16 bullet piece 18 protruding portion

Claims (1)

[Scope of utility model registration request] 1. A metal lid plate, and an engaging portion that is fixed to the back surface of the lid plate via studs and projects in a direction opposite to the surface of the lid plate, and that bulges outward in the middle. A cap made of a bifurcated spring steel bullet piece, wherein the tip ends of both bullet pieces are provided with projecting portions projecting inwardly toward each other and having their tips overlapping.