JPH0578327U - Hemming device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention increases the pressing force of the hemming roller to perform reliable hemming, and enables the hemming roller to perform hemming correspondingly even if the hemming shape is uneven. It is to provide a hemming device. [Structure] A slider 12 is slidably guided and supported on a support member 7 fixed to a robot arm 5 via a slide shaft 11, and a cylinder 13 fixed to the support member 7 in an axial direction parallel to the slide shaft 11. And the slider 1
2 and the hemming roller 14 made of a gel material is rotatably supported on the slider 12, and the guide roller 15 is supported on the support member 7 by a rotation axis parallel to the rotation axis of the hemming roller 14. A guide rail 16a for pre-bending and a guide rail 1 for main bending, which are axially supported opposite to 14 and guide the guide roller 15 to the lower die 1.
6b is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hemming device for bending an edge of a sheet metal.

[0002]

[Prior Art]

 As shown in FIG. 6, a conventional hemming device for bending an edge of a sheet metal has a lower die 1, a positioning jig 2 for pressing and fixing the sheet metal on the lower die 1, and a lateral side of the lower die 1. A robot 3 moving on a guide rail 4 laid on the floor and a hemming roller 6 rotatably supported by a support member 7 provided on a wrist 5a at the tip of an arm 5 of the robot 3. There is.

Then, as shown in FIG. 7, the lower metal plate 8 a and the upper metal plate 9 a are positioned on the lower mold 1 by overlapping, and the edge 8 b of the lower metal plate 8 a is preliminarily moved by the hemming roller 6 at about 45 degrees. Preparation bending is performed, and then the main bending is performed so that the edge 8b of the lower sheet metal 8a overlaps the edge 9b of the upper sheet metal 9a.

[0004]

[Problems to be solved by the device]

 In the conventional hemming processing apparatus described above, since the hemming pressure is only the thrust of the robot, the pressure may be insufficient and it may not be possible to bend it sufficiently.

An object of the present invention is to provide a hemming device that solves the above-mentioned conventional problems.

[0006]

[Means for Solving the Problems]

 The gist of the present invention for achieving the above object is to provide a supporting member fixed to a robot arm, a slider fixed to a slide shaft slidably guided and supported by the supporting member, and the supporting member to the above-mentioned member. A cylinder fixedly mounted in the axial direction parallel to the slide shaft and coupled to the slider, a hemming roller made of a gel material rotatably supported by the slider, and a support member parallel to the rotation axis of the hemming roller. It is provided with a guide roller which is axially supported so as to face the hemming roller with a rotation axis, a guide rail for pre-bending and a guide rail for main bending which guide the guide roller to the lower mold.

[0007]

[Action]

 With the above configuration, the pressing force of the hemming increases the bending force by the holding force between the hemming roller to which the thrust of the cylinder is applied and the guide roller guided by the lower guide rail, thereby increasing the reliable hemming operation. It is something to do. In addition, the hemming roller made of gel-like material can be used to process concave and convex hemming shapes.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a lower die, 2 is a positioning jig for pressing and fixing a metal plate on the lower die 1, 3 is a robot that moves on a guide rail 4 laid on the floor side of the lower die 1, 7 Is a support member 7 provided on the wrist 5a at the tip of the arm 5 of the robot 3.

As shown in FIG. 2, a guide cylinder 10 is fixed to the support member 7, and a slide shaft 11 is slidably guided and supported by the guide cylinder 10. A slider 12 is fixed to the slide shaft 11.

A cylinder 13 is fixedly mounted on the support member 7 in an axial direction parallel to the slide shaft 11 and is connected to the slider 12.

A hemming roller 14 made of a gel material is rotatably supported on the slider 12 and a guide roller 15 is supported on the support member 7 by a rotation axis parallel to the rotation axis of the hemming roller 14. Is axially supported opposite to.

Further, the lower mold 1 is provided with a pre-bending guide rail 16a for guiding the guide roller 15 and a main-bending guide rail 16b. The pre-bending guide rails 16a and the main-bending guide rails 16b extend in the direction in which the robot 3 moves along the guide rails 4 on the floor surface and have chevron-shaped edges. The rail 16a has a downward inclination angle of 45 degrees, and the main bending guide rail 16b is installed so as to face downward in the vertical direction.

Therefore, the guide roller 15 is provided with a V-shaped groove corresponding to the mountain-shaped pre-bending guide rail 16a and the main-bending guide rail 16b.

Since the present invention has the above-described structure, as shown in FIG. 2, the guide roller 15 is engaged with the pre-bending guide rail 16a of the lower die 1 to move the hemming roller 14 onto the lower die 1. Positioned at an inclination angle of 45 degrees with respect to the edge 8b of the set lower sheet metal 8a which is bent at 90 degrees (the 90 degree bending of the edge 8b is formed at the time of press working in the previous step). ..

When the cylinder 13 is moved backward in this state, the hemming roller 14 moves in a direction approaching the guide roller 15 via the slider 12, and the edge 8b of the lower sheet metal 8a bent at 90 degrees is moved. Pre-bending is performed at 45 degrees.

Next, as shown in FIG. 3, the guide roller 15 is engaged with the main bending guide rail 16b. As a result, the hemming roller 15 is positioned in the horizontal direction, and the edge 8b of the lower sheet metal 8a pre-bent to 45 degrees by the backward movement of the cylinder 13 is bent and clamped on the edge 9b of the upper sheet metal 9a. This is the main bending process.

Therefore, in the present invention, in both pre-bending and main bending, the pressing force of the hemming roller 15 is a thrust force of the cylinder 13 and the holding force between the guide roller 15 that receives the thrust force acts as a bending force. A large bending force of the edge 8b is obtained.

Further, since the hemming roller 14 is formed of a gel-like material, the hemming roller 14 may have a convex hemming shape as shown in FIG. 4 or a concave shape as shown in FIG. Performs hemming by deforming following the shape.

[0019]

[Effect of the device]

 As described above, according to the present invention, the slider is slidably guided and supported by the support member fixed to the robot arm through the slide shaft, and the cylinder fixed to the support member in the axial direction parallel to the slide shaft. A hemming roller made of a gel material is rotatably supported on the slider by being coupled to the slider, and a guide roller is supported on the supporting member by a rotation axis parallel to the rotation axis of the hemming roller. Since the structure is provided with a pre-bending guide rail that pivotally supports and guides the guide roller to the lower die, and a main bending guide rail, the hemming force of the hemming roller is the thrust of the cylinder, the hemming roller and the guide roller. The holding power is great, and reliable hemming processing can be obtained.

Further, since the guide roller is engaged with the pre-bending guide rail and the main-bending guide rail to perform the pre-bending of the hemming roller and the angular positioning of the main bending, the pre-bending and the main bending of the edge of the sheet metal are performed. The angle can be obtained easily and accurately.

Furthermore, since the hemming roller is formed of a gel material, the hemming roller can be deformed to follow the shape and be hemmed regardless of whether the hemming shape is convex or concave. This has the advantage that the work of replacing the hemming roller with a concave-convex dedicated roller can be omitted.

[Brief description of drawings]

FIG. 1 Overall view of the device of the present invention

FIG. 2 is a sectional view of a main part in a pre-bent state by the device of the present invention.

FIG. 3 is a cross-sectional view of the main part of the device according to the present invention in a fully bent state.

FIG. 4 is a sectional view of an uneven hemming state by the device of the present invention.

FIG. 5 is a sectional view of an uneven hemming state by the device of the present invention.

FIG. 6 is an overall view of a conventional device

FIG. 7 is a cross-sectional view of a pre-bending state and a main bending state according to a conventional device

[Explanation of symbols]

 1 Lower die 2 Positioning jig 3 Robot 5 Arm 7 Supporting member 11 Slide shaft 12 Slider 13 Cylinder 14 Hemming roller 15 Guide roller 16a Pre-bending guide rail 16b Main bending guide rail

Claims (1)

[Scope of utility model registration request] 1. A support member fixed to a robot arm,
A slider fixedly mounted on a slide shaft slidably guided and supported by the support member, a cylinder fixedly mounted on the support member in an axial direction parallel to the slide shaft and coupled to the slider, and rotatable on the slider. A hemming roller made of a gel-like material that is axially supported on the supporting member, a guide roller that is axially supported by the supporting member so as to face the hemming roller on a rotation axis that is parallel to the rotation axis of the hemming roller, and the guide roller is guided to the lower mold. A hemming device comprising a pre-bending guide rail and a main-bending guide rail.