JPH076989Y2 - Seaming roll bottom closure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to improvement of a bottom closure of a seaming roll in a seamer.

(Prior Art) In can winding work, the seamer's seaming roll is
When the type of cans to be wound is changed, it must be replaced with one that matches the type of cans.

Conventionally, as shown in FIG. 7, the seaming roll of the seamer is rotatably supported by filling the bearing portion with grease at the lower end portion of the spindle 33. The seaming roll generates high heat by pressure contact with the can tightening portion and rotates at high speed during can tightening, and the grease filled therein is fluidized. Therefore, an iron plate as shown in FIG. 8 is punched and formed. The bottom closure 30 covers the lower end to prevent the grease from dripping downward. The bottom closure has an O-ring 32 on the inner peripheral wall of the seaming roll body 31.
It is crimped and fitted through. Therefore, the removal of the seaming roll from the spindle 33 for replacement is performed by first removing the bottom closure 31 and then removing the countersunk screw 34.

(Problems to be solved by the invention) A conventional bottom closure is formed by punching and molding a steel plate with a smooth surface into a dish shape, and is fitted without being caught, and its removal is done with one hand. The seaming roll is held by to prevent rotation, and a tool formed by folding a thin gold saw blade with the other hand is inserted into the edge of the bottom closure 30 and hooked on the edge. However, the tool does not easily enter the tightly fitted edges,
The tool may slip due to excessive force and the other hand holding the roll may be injured, resulting in very poor workability in terms of efficiency and safety. Therefore, conventionally, the seaming roll 1
It takes about 2 to 3 minutes to remove one, and in the case of a 12-head seamer, 24 rolls must be replaced by combining the first seaming roll and the second seaming roll, so it takes about 1 hour just to remove it. It is the actual situation that requires.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bottom closure for a seaming roll that can be attached and detached extremely easily and safely.

(Means for Solving the Problems) A bottom closure of the present invention that achieves the above object is a cylindrical wall fitted to the inner peripheral wall of the lower end of the opening of the seaming roll main body, and a first continuous inner wall from the lower end of the cylindrical wall. A bottom wall and a second bottom wall formed inside the first bottom wall via a step wall, and a projecting portion projecting outward from the step wall is formed on an outer peripheral portion of the second bottom wall. It has a configuration characterized in that.

(Operation) By providing a projecting portion on the outer peripheral portion of the second bottom wall so as to project from the step wall, a tool such as a driver is inserted between the projecting portion and the annular wall, and the tool seaming roll. If the main body is rotated as a fulcrum, the tip of the tool is caught by the protruding portion, and the bottom closure can be removed very easily.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

1 to 6 show an embodiment of a bottom closure according to the present invention. In the figure, 1 is a bottom closure, a cylindrical wall 2 fitted to the inner peripheral wall of the lower end of the opening of the seaming roll main body, a first bottom wall 3 extending inward from the lower end of the cylindrical wall, and the inside of the first bottom wall. And a second bottom wall 5 formed through the step wall 4 and formed by lathe processing.
An annular protrusion 6 is formed on the outer periphery of the second bottom wall so as to protrude outward from the step wall. The top of the cylindrical wall 2 is tapered.

The bottom closure 1 of this embodiment is formed as described above and, as shown in FIG.
The bearing 13 is attached to the lower end of the opening 12 into which the bearing 13 is fitted via the O-ring 11 to prevent the grease filled in the opening 12 from leaking downward. In addition, when attaching and detaching the bottom closure in the past, the corner portion of the bottom wall of the bottom closure hits the O-ring, and the O-ring was damaged and the life of the O-ring was short, but according to this embodiment, the tip end is tapered. Since it has become
The life of the O-ring can be extended without damaging the O-ring.

Therefore, in order to remove the seaming roll from the spindle 14 when replacing the seaming roll, a suitable tool such as a screwdriver 15 is used to remove the bottom closure.
The bottom closure can be easily removed by engaging the tip of the with the protrusion 6 of the bottom closure 1 and rotating the tool in the direction of the arrow in the drawing with the seaming roll body as the fulcrum.

FIG. 4 shows an embodiment in which the bottom closure of the above embodiment is attached to another type of seaming roll 16. 5 and 6 show bottom views of other embodiments of this embodiment. In the embodiment shown in FIG. 5, the protruding portion 21 of the bottom closure 20 is formed in a substantially elliptical shape so as to protrude from the second bottom wall 22 so that the short diameter thereof substantially matches the outer circumference of the step wall. Further, FIG. 6 shows that the outer periphery of the second bottom wall 23 is almost
Another embodiment of the seaming roll 25 in which the protrusions 24 are formed at 90 ° intervals is shown.

As described above, the shape of the protruding portion of the seaming roll of the present invention is not limited to a circular shape, and can be set as appropriate as long as it has a shape such that a tool is caught.

(Effect) Since the bottom closure of the present invention is configured as described above, the tip of the tool can be easily hooked on the protruding portion of the bottom closure, and the bottom closure can be removed extremely easily compared with the conventional one. . Therefore, unlike the conventional technique, the tool is not slipped and the other hand is not scratched, the seaming head can be replaced in a very short time, and the workability can be dramatically improved.

[Brief description of drawings]

1 to 6 show an embodiment of a bottom closure of a seaming roll according to the present invention, FIG. 1 is a side sectional view of a state in which the seaming roll is mounted, and FIG. 2 is a side sectional view of the bottom closure. FIG. 3 is a bottom view of the same, FIG. 4 is a side sectional view of the same when mounted on another type of seaming roll, and FIG.
FIG. 6 is a bottom view of another embodiment, FIG. 6 is a bottom view of still another embodiment, and FIG. 7 is a side sectional view of a conventional seaming roll.
FIG. 8 is a side sectional view of a conventional bottom closure. 1,20,25: Bottom closure, 2: Cylindrical wall, 3: First bottom wall,
4: Step wall, 5,22,23: Second bottom wall, 6,21,24: Projection part, 10: Seaming roll body, 11: O-ring

Claims (1)

[Scope of utility model registration request] 1. A bottom closure that fits into a lower end opening of a seaming roll rotatably fixed to the lower end of a spindle and seals the opening, and is fitted to an inner peripheral wall of the lower end of the opening of the seaming roll body. An outer circumference of the second bottom wall; A bottom closure for a seaming roll, characterized in that a protruding portion protruding outwardly from the step wall is formed in the portion.