JPH0341861Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lock seamer device for forming a metal cylinder such as a shell constituting an automobile muffler by lock seaming.

[Prior Art] Generally, a metal cylinder such as a shell that constitutes an automobile muffler is formed by lock seaming.

This lock seaming is performed by winding a steel plate around a mandrel, so it can be easily manufactured by simply adjusting the mandrel to the size of the product to be formed, and is suitable for mass production.

A lock seamer device that performs such lock seaming is, for example, the one disclosed in Japanese Utility Model Application No. 152128/1982, or the one disclosed in Japanese Patent Application No. 1983-152-1.
The one described in No. 36128 is known.

4 and 5 show the main parts of this type of lock seamer device, and in the figures, reference numeral 11
shows a mandrel placed horizontally.

Above this mandrel 11, there is a mandrel 1
A support plate 13 that is movable along one axis is disposed.

A bending roller section 15 is arranged on the front side of the support plate 13, and a roller forming section 17 is arranged at a predetermined distance L from the bending roller section 15.

Further, on both sides of the mandrel 11, as shown in FIG.
A ranket portion 29 having 5 and 27 is arranged.

In the Roxima device configured as described above, as shown in FIG. By pressing the steel plate 23 onto the mandrel 11, the steel plate 23 is wound around the mandrel 11 from below.

Thereafter, the supporting plate 13 is moved horizontally by a drive mechanism (not shown), and the bending roller portion 15 is moved along the axial direction of the mandrel 11, so that both ends of the steel plate 23 are bent as shown in FIG. 7, for example. It is bent into the shape shown.

After this, the bent portion 1 is bent by the bending roller portion 15.
As shown in FIG. 5, the steel plate 23 on which the numbers 9 and 21 have been formed is pressed on both sides toward the mandrel 11 by the rankets 25 and 27, and is brought into a state as shown in FIG.

Next, by moving the support plate 13 in the horizontal direction,
The forming roller part 17 is moved along the axial direction of the mandrel 11, and both ends of the steel plate 23, which are pressed on both sides by the runkets 25 and 27, are
As shown in FIG. 9, polymerization is carried out, and at about the same time this part is lockseamed as shown in FIG.

[Problem that the invention attempts to solve]

However, in the conventional lock seamer device configured as described above, both ends of the steel plate 23 wound around the mandrel 11 are bent by the roller portion 15.
After the steel plate 2 is bent by the bending roller section 15, the bent portions 19 and 21 are formed by the bending roller section 15 before lock seaming is performed by the roller forming section 17.
3 needs to be pressed in the direction of the mandrel 11 from both sides by the runkets 25 and 27. Therefore,
At this time, space is required for the movement of the runkets 25 and 27, so in the conventional lock seamer device, the bending roller section 15 and the roller forming section 17 are
There is a problem in that it is necessary to arrange the two at a predetermined interval L.

That is, in this case, there is a problem in that the length of the support plate 13 increases and the size of the lock seamer device increases accordingly.

[Purpose of invention]

The present invention solves the above-mentioned problems and aims to provide a lock seamer device that can be easily miniaturized.

[Means for solving problems]

The Roxima device according to the present invention bends both ends of a steel plate wound from below around a horizontally arranged mandrel into a predetermined shape by moving a helical bending roller along the axial direction of the mandrel. a roller part, and a runket part that presses the steel plate on which the bent part is formed from both sides in the direction of the mandrel by the bending roller part;
A lock seamer device comprising a roller forming section that overlaps both ends of the steel plate, both sides of which are pressed by the runket section, by moving a forming roller along the axial direction of the mandrel, and lock seams these sections. A cylinder is fixed to the upper surface of a support plate that supports the forming roller of the roller forming section on the lower surface, and the bent roller section is fixed to the tip of the piston rod of this cylinder.

[Effect of invention]

In the lock seamer device of the present invention, the piston rod is extended in the horizontal direction by operating the cylinder placed on the upper surface of the support plate, and both ends of the steel plate are held in a predetermined position by the bending roller portion placed at the tip of the piston rod. It is bent into the shape of.

Thereafter, with the piston rod extended, the lanket part is moved, and the steel plate having the bent part formed by the bending roller part is pressed on both sides toward the mandrel by the lanket part.

Next, the support plate is moved in the horizontal direction, and by the movement of the forming roller section disposed on the lower surface of the support plate, both ends of the steel plate, which are pressed on both sides by the runket section, are overlapped and lock-seamed. Ru.

[Example of idea]

Hereinafter, details of the present invention will be described with reference to an embodiment shown in the drawings.

1 and 2 show an embodiment of the lock seamer device of the present invention.
3 shows a horizontally arranged mandrel.

A support plate 3 that is movable along the axis of the mandrel 33 is located above the left side of the mandrel 33.
5 is placed.

A roller forming section 41 including a plurality of forming rollers 37 and 39 is arranged on the lower front side of the support plate 35 .

A cylinder 43 is fixed to the upper surface of the support plate 35, and the piston rod 4 of this cylinder 43
A plurality of bending rollers 47, 4 are provided at the tip of 5.
A bending roller portion 51 having a diameter of 9 is fixed.

Further, on both sides of the mandrel 33, as shown in FIG. 5
3,55 are arranged.

The ranking parts 53 and 55 are the ranking parts 53 and 55.
7 in the horizontal direction, and a cylinder 61 to move the runket 57 in the vertical direction.

In the Roxima device configured as described above, the steel plate 2 is attached to the lower mold 31 as shown in FIG.
After placing the mandrel 3 on this steel plate 23,
3 is placed, the lower die 31 is raised, and the steel plate 23 is pressed onto the mandrel 33, so that the steel plate 23 is wound around the mandrel 33 from below.

After this, the cylinder 43 placed on the upper surface of the support plate 35 is actuated, thereby causing the piston rod 4
5 is a bent roller portion 51 which extends as shown in FIG. 3 and is placed at the tip of the piston rod 45.
As the steel plate 23 moves, both ends of the steel plate 23 are bent into a shape similar to that shown in FIG. 7, for example.

Thereafter, with the piston rod 45 of the cylinder 43 extended, the runkets 57 of the runket parts 53 and 55 move, and the steel plate 23 with the bent parts 19 and 21 formed by the bending roller part 51 is bent as shown in FIG. As shown in FIG. 8, both sides of the lancet 57 are pressed toward the mandrel 33, resulting in a state similar to that shown in FIG.

Next, by horizontally moving the support plate 35 by a drive mechanism (not shown), the forming roller 3 of the forming roller section 41 is moved along the axial direction of the mandrel 33.
7 and 39 are moved, and both ends of the steel plate 23, which are pressed on both sides by the runkets 57, are overlapped in the same manner as shown in FIG. 9, and almost simultaneously, this portion is locked as shown in FIG. Seamed.

In this embodiment, as the support plate 35 moves toward the mandrel 33, the extended piston rod 45 moves in the direction of arrow A in FIG.
It is configured to move at the same speed as No. 5.

In the lock seamer device configured as described above, the bending roller portion 51 is moved by operating the cylinder 43 disposed on the upper surface of the support plate 35 and extending the piston rod 45. , after the piston rod 45 is extended, the support plate 35 on which the roller forming part 41 is arranged.
Since the piston rod 4 will be moved,
When the runners 5 are extended, sufficient space is created for moving the lanket parts 53, 55.

Therefore, if the runket parts 53 and 55 are moved when the piston rod 45 is extended, it is not necessary to arrange the bending roller part 15 and the roller forming part 17 on the support plate 13 with a space between them, as in the conventional case. As a result, the length of the support plate 13 is shortened, and the device can be easily miniaturized.

[Effect of idea]

As described above, in the lock seamer device of the present invention, the cylinder is fixed to the upper surface of the support plate that supports the forming roller of the roller forming section on the lower surface, and the bent roller section is fixed to the tip of the piston rod of this cylinder. Therefore, there is an advantage that the device can be easily downsized.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the lock seamer device of the present invention, FIG. 2 is a front view of the lock seamer device of FIG. 1, and FIG. 3 is a state in which the piston rod of the lock seamer device of FIG. 1 is extended. Side view,
FIG. 4 is a side view showing an example of a conventional lock seamer device, FIG. 5 is a front view of the lock seamer device shown in FIG. . 23... Steel plate, 33... Mandrel, 35...
Support plate, 41...Roller forming part, 43...Cylinder, 45...Piston rod, 51...Bending roller part, 53...Ranket part.

Claims (1)

[Claims for Utility Model Registration] (1) Both ends of a steel plate wound from below around a horizontally arranged mandrel are bent into a predetermined shape by moving a helical bending roller along the axial direction of the mandrel. a bent roller section;
A runket part that presses the steel plate with the bent part formed in the direction of the mandrel from both sides by the bending roller part, and a runket part that presses the steel plate with the bent part formed in the direction of the mandrel from both sides, and a runket part that presses both ends of the steel plate whose both sides are pressed by the runket part in the axial direction of the mandrel. In a lock seamer device, a cylinder is provided on the upper surface of a support plate that supports the forming roller of the roller forming section on the lower surface. A lock seamer device characterized in that the bending roller portion is fixed to the tip of the piston rod of the cylinder. (2) The lock seamer device according to claim 1, wherein the runket portion is movable up and down.