JPH0634023Y2 - Riveting machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a riveting machine in which both end edges of a parallel inner wall and outer wall are bent at the same time.

[Conventional technology]

Conventionally, in both ends of the pipe that constitutes the roller conveyor,
The bearing case is fitted and fixed.

As shown in FIG. 5, the receiving box includes an annular main wall 2 and a cylindrical inner wall 3 and outer wall 4 which are continuous from the entire inner and outer peripheral edges of the main wall 2 and are parallel to each other on one side of the main wall 2. And a ring-shaped lid wall 6 fitted between the inner wall 3 and the outer wall 4 of the case 5, and after the lid wall 6 is fitted, the open edge of the inner wall 3 is formed as shown in FIG. The open edge of the outer wall 4 is rolled inward by a press and bent, and the bent portions 7 and 8 prevent the lid wall 6 from falling off.

[Problems to be solved by the device]

Since the bending portion of the inner wall and the bending portion of the outer wall are separately processed by pressing, there is a problem that it takes a great deal of work and causes an increase in cost.

Therefore, an object of the present invention is to provide a riveting machine capable of simultaneously processing a bent portion of an inner wall and a bent portion of an outer wall.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a supporting member at the lower end of a spindle that is rotated by a motor and moves up and down by a cylinder, and a vertical member that rotates freely with respect to the supporting member at the center of the lower end surface of the supporting member. Is provided with a first roll that rotates freely through the rotary shaft and the horizontal support shaft, and is bent into an inverted L shape with the opening edge of the inner wall of the case fitted outwardly to the lower end outer periphery of the rotary shaft. First forming step portions are provided on the outer peripheral surface of the first roll, and second forming step portions that bend and bend the portion bent by the first forming step portion downward are provided respectively, and further, the lower surface peripheral edge portion of the support member. A second roller that freely rotates with respect to the support member via a horizontal support shaft is provided on the outer periphery of the second roller, and a third molding step portion is bent around the opening edge of the outer wall of the case toward the inside. Is provided and configured Than it is.

[Action]

After placing the case where the lid wall is fitted in the receiving jig, the spindle rotated in one direction by the motor is lowered by the cinder.

When the first forming step of the rotating shaft of the supporting member that rotates and descends together with the lowering of the spindle comes into contact with the opening edge of the inner wall and the third forming step of the second roll comes into contact with the opening edge of the outer wall, respectively. The first molding step bends the opening edge of the inner wall into an inverted L shape, and the third molding step bends the opening edge of the outer wall inward.

The second roll of the first roll is attached to the inverted L-shaped bent portion of the inner wall.
Since the forming step portion contacts, the L-shaped bent portion is wound and bent by the second forming step portion.

〔Example〕

Hereinafter, a riveting machine according to the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, at the lower end of a spindle 12 which is rotated by a motor 11 and is moved up and down by a cylinder 15, a support member 13 which is rotated together with the spindle 12 is provided.

As a means for raising and lowering the spindle 12 by the cylinder 15, the cylinder 15 is supported by a column 14 in the case shown in the drawing, and the spindle of the piston shaft 16 is arranged so as to move up and down integrally with the piston shaft 16 by the action of the cylinder 15. 12
Is pierced and supported.

In addition, the support member 13 is attached to the spindle 12 by screwing a screw hole 17 and a screw shaft 18 in the illustrated case.

Further, in the central portion of the lower surface of the support member 13, a vertical rotation shaft 19 and a horizontal support shaft 20 which rotate freely with respect to the support member 13.
A first roll 21 that freely rotates through a support roller 13 and a second roll 23 that freely rotates with respect to the support member 13 via a horizontal support shaft 22 are provided on the peripheral edge of the lower surface of the support member 13.

On the outer periphery of the lower end of the rotary shaft 19, there is provided an inverted L-shaped first forming step portion 24 which bends in an inverted L-shape with the opening edge of the inner wall 3 of the case 5 outward, and is provided on the outer peripheral surface of the first roll 21. The L-shaped second forming stepped portion 25 facing inward from one end face of the first roll 21 so that the bent portion bent by the first forming stepped portion 24 is bent downward, is formed on the outer periphery of the second roll 23. Each surface is provided with a third forming step portion 26 of a U-shaped groove that is bent inward by winding the opening edge of the outer wall 4 inward.

In addition, the rotating shaft 19, the first roll 21, the second roll 23 described above.
In the case shown in the figure, two are arranged so as to face each other to prevent the case 5 from rising during bending work.

Reference numeral 27 in the drawing denotes a bearing of the rotary shaft 19.

With the above construction, the case 5 in which the lid wall 6 is fitted is placed on the receiving jig 28, and the support member 13 is lowered together with the spindle 12 which is driven in one direction by the motor 11 by the action of the cylinder 15. Then, the first molding step portion 24 comes into contact with the opening edge of the inner wall 3, and the opening edge of the inner wall 3 is bent outwardly by the first molding step portion 24 while being bent outward to form an inverted L shape. The second forming stepped portion 25 comes into contact with the bent portion of the L-shaped portion, the L-shaped bent portion is bent and bent downward by the second forming stepped portion 25, and a third portion is formed at the opening edge of the outer wall 4.
The molding step portion 26 comes into contact, and the opening edge of the outer wall 4 is rolled up and bent downward by the third molding step portion 26.
A rotary shaft 19 associated with the rotation of the support member 13, a first roll 21,
By the turning movement of the second roll 23, a bent portion 7 is formed on the entire peripheral edge of the inner wall 3 and a bent portion 8 is formed on the entire peripheral edge of the outer wall 4 (as shown in FIG. 4).

After the bending is completed, the spindle 12 is raised and returned together with the supporting member 13, and the receiving box is taken out from the receiving jig 28.

〔effect〕

As described above, according to the riveting machine according to the present invention, the opening edges of the inner wall and the outer wall can be wound and bent at once.

Therefore, the work efficiency is significantly improved and the cost can be reduced.

Further, since the opening edge of the inner wall is bent outward by the first forming step of the rotating shaft and the bent portion is wound by the second forming step of the first roll, the inner wall can be smoothly bent. it can.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a riveting machine according to the present invention, FIG. 2 is a bottom view of a supporting member, and FIG.
-Cross-sectional view taken along line X, Fig. 4 is a vertical sectional front view of the receiving box, Fig. 5
The figure is an exploded perspective view of the above. 11 …… motor, 12 …… spindle, 13 …… supporting member, 14 …… column, 15 …… cylinder, 16 …… piston shaft, 19 …… rotating shaft, 20 …… spindle, 21 …… first roll , 22 ... spindle, 23 ... second roll, 24 ... first forming step, 25 ... second forming step, 26 ... third forming step.

Claims (1)

[Scope of utility model registration request] 1. A support member is provided at a lower end of a spindle which is rotated by a motor and is moved up and down by a cylinder, and a vertical rotation shaft and a horizontal support which are freely rotated with respect to the support member are provided at a central portion of a lower end surface of the support member. A first roll that rotates freely through a shaft is provided, and a first forming step portion that bends into an inverted L shape with the opening edge of the inner wall of the case into which the lid wall is fitted is provided on the outer periphery of the lower end of the rotating shaft. A second forming step portion is provided on the outer peripheral surface of the first roll to bend and bend the portion bent by the first forming step portion downward, and further, a horizontal spindle is provided on a peripheral edge portion of the lower surface of the supporting member. A second roller that freely rotates with respect to the support member via
A riveting machine provided with a third molding step portion which is wound around the opening edge of the outer wall of the case and is bent around the outer circumference of the second roller.