KR100641329B1 - Hemming device using rollers - Google Patents

Abstract

The present invention relates to a hemming device used for partial hemming, such as a motor spring of an automobile. Hemming device of the present invention is a hemming device that is movable in the vertical and horizontal directions by a drive source; A plurality of hydraulic cylinders fixed to the frame; A plurality of hemming rollers which are movable up and down by the hydraulic cylinder, for hemming the panel; A plurality of guide rollers which come into close proximity to the respective hemming rollers when the panel is hemmed; And a plurality of hydraulic cylinders for moving the guide roller back and forth in the horizontal direction.

Hemming, Sunroof Ring, Roller Type

Description

Hemming device using rollers

Figure 1a is a cross-sectional view of the hemming state of the sunroof portion according to the present invention.

Figure 1b is a cross-sectional view of the hemming state of the wheel arch portion according to the present invention.

Figure 2 is an exemplary plan view of the hemming device according to the present invention.

Figure 3 is an exemplary cross-sectional view of the hemming device according to the present invention.

Figure 4 is an exemplary perspective view from the bottom of the hemming device according to the present invention.

Figure 5 is an exemplary perspective view from the top of the hemming device according to the present invention.

6 is a partial cross-sectional view of the hemming device according to the present invention.

7 is an explanatory diagram illustrating left and right movement of the hemming apparatus according to the present invention.

8 is an explanatory view illustrating a shandong of the hemming apparatus of the present invention.

Explanation of symbols on the main parts of the drawings

110,112,114 ..... Hydraulic Cylinder 110a, 112a, 114a ..... Piston Shaft Shaft

120 ..... Frame 122 ..... Guide Shaft

124 ..... Housing 130,132,134 ..... Moving plate

Ra, Rb, Rc ..... Heming Roller Ga, Gb, Gc ..... Guide Shaft

The present invention relates to a hemming device, and more particularly, to a roller-type hemming device configured to efficiently perform partial hemming through a mechanical configuration using a plurality of rollers.

Hemming generally means folding and joining two panels (outer panel and inner panel). Such a hemming device is generally used in a variety of automobile manufacturing, mainly applied to the combination of the inner and outer panels in the door, hood, trunk, and the like. Recently, the hemming method is applied to the wheel arch part and the sunroof part.

In the hemming of the sunroofing part and the wheel arch part, it can be said that the hemming is only required in part, unlike the hemming of the door performed on the entire outer circumferential surface of the panel. However, a conventional hemming device such as a tabletop method or a press method is not only unsuitable for a partial hemming process but also has a complicated structure. Therefore, many disadvantages are pointed out in manufacturing and management.

The present invention has been made to solve the above disadvantages, and a main object of the present invention is to provide a roller-type hemming device that is optimal for partial hemming, such as a sunroof ring part, by using a plurality of rollers.

Roller-type hemming device according to the present invention for achieving the above object is a hemming device that is movable in the vertical and horizontal direction by a drive source; A plurality of hydraulic cylinders fixed to the frame; A plurality of hemming rollers which are movable up and down by the hydraulic cylinder, for hemming the panel; A plurality of guide rollers which come into close proximity to the respective hemming rollers when the panel is hemmed; And a plurality of hydraulic cylinders for moving the guide roller back and forth in the horizontal direction.

And according to the embodiment, it may further comprise a guide means for guiding the shandong of the hemming roller.

Each of the hemming rollers is installed at the lower portion of the movable plate, and the movable plate is preferably configured to be moved by the hydraulic cylinder.

And it is preferable that the hydraulic cylinder which moves the said guide roller in a horizontal direction is provided in the bottom face of the said movable plate.

And according to the embodiment of the guide means, the guide shaft is installed on the upper portion of the movable plate; It is installed in the frame, and comprises a housing for slidably receiving the guide shaft.

Next, the present invention will be described in more detail with reference to the embodiments shown in the drawings.

First, with reference to FIG. 1, a hemming cross section of a pair of panels by the device of the present invention will be described. FIG. 1A illustrates a hemming state of the outer panel OP and the inner panel IP in the sunroof portion, and FIG. 1B illustrates a hemming state of the outer panel OP and the inner panel IP in the wheel arch portion. It is shown.

As can be seen in FIG. 1, hemming means processing at least one end of the outer panel OP to surround the inner panel IP. In the hemming of the sunroof portion of FIG. 1A and the hemming of the wheel arch portion of FIG. 1B, the structure is slightly different, but at least one end of the outer panel OP is treated to surround the inner panel IP. Same as As described above, the hemming apparatus of the present invention is a device which partially processes a portion of the outer panel to surround the inner panel, and hemming the outer panel sequentially using a plurality of rollers.

Figure 2 shows a schematic operation of the hemming apparatus according to the present invention, which schematically shows the process of hemming is performed in the sunroofing portion, Figure 3 shows the operation of the outer panel folding the operation of each hemming roller It is explanatory drawing shown as a reference.

First, as shown in FIG. 2, a plurality of rollers (Ra, Rb, Rc in the illustrated embodiment) move in the direction of the arrow A, and the hemming treatment of the sunroof portion is performed. The plurality of rollers, in the illustrated embodiment shows an embodiment consisting of three, such rollers (Ra, Rb, Rc) is mounted on the hemming device of the present invention to perform a constant reciprocating motion, hemming Processing will be performed.

That is, as shown in FIG. 3, the first hemming roller Ra performs the primary hemming to bend about 40 degrees with respect to the end of the outer panel OP. The first hemming roller Ra performs the primary hemming while moving in the direction of the arrow A while moving in the direction of the arrow A while being in contact with the end of the outer panel OP.

After the primary hemming is performed by the first hemming roller Ra, the secondary roller Rb continuously moving together is further bended at an end of the outer panel OP again to hemm about 80 degrees. Will be performed. That is, when the first hemming roller Ra reaches the hemming end line L, the first hemming roller Ra is heard upward, and the second hemming roller Rb performs the second hemming during the same period.

When the second hemming roller Rb reaches the hemming end line L, the second hemming roller is lifted upward and the third hemming roller performs the third hemming during the hemming section HL. That is, the tertiary roller Rc starts the full hemming to completely wrap the inner panel OP to completely wrap the inner panel OP, and then hemmes to the end of the hemming end line.

In summary, the rollers Ra, Rb, and Rc are in contact with the outer panel OP within the range of the hemming section HL, and a plurality of hemming processes (for example, primary hemming, secondary hemming, 3rd hemming) to complete hemming. Each of the rollers Ra, Rb, and Rc descends from the hemming start line Ls, as shown by arrow B in FIG. 3, and starts contact with the outer panel OP. When the hemming process is performed while moving along the A) direction, the hemming end line L is reached and the hemming process is completed in the direction indicated by the arrow B.

Next, a hemming apparatus of the present invention having a plurality of rollers Ra, Rb, and Rc as described above will be described with reference to FIGS. 4 and 5.

The hemming apparatus of this invention is equipped with several hemming rollers Ra, Rb, and Rc as shown to FIG. 4 and FIG. As described above, the hemming rollers Ra, Rb, and Rc are rollers capable of partially hemming the sunroof ring portion or the wheel arch portion, and are installed to be vertically movable by a plurality of hydraulic cylinders 110, 112, and 114. It is.

That is, in the illustrated embodiment, the plurality of cylinders 110, 112, 114 supported by the frame 120 are connected to the plurality of movable plates 130, 132, 134. When the piston shafts 110a, 112a, 114a of the cylinders 110, 112, 114 are operated, the plurality of movable plates 130, 132, 134 may move up and down, respectively. In addition, hemming rollers Ra, Rb, and Rc are installed at lower portions of the movable plates 130, 132, and 134 through brackets Ba, and the hemming rollers Ra, Rb are substantially operated by the hydraulic cylinders 110, 112, and 114. , Rc) is configured to operate in the vertical direction. The vertical motion of the hemming rollers Ra, Rb, and Rc is for performing the first, second and third hemming as described above. And in the embodiment shown in FIG. 5, the said piston shaft 114a is connected with the movable plate 134 and the pin 114b.

And guide means for accurately guiding the vertical movement of the movable plate (130, 132, 134) having the hemming roller (Ra, Rb, Rc) may be included. In the illustrated embodiment, the guide shaft 122 is installed upright on the movable plates 130, 132 and 134, respectively, and the frame 120 is provided with a housing 124 which slides while the guide shaft 122 is received. have. Therefore, when the movable plate (130, 132, 134) moves up and down by the hydraulic cylinder, the movable plate performs the vertical movement by the piston shaft (110a, 112a, 114a) of the hydraulic cylinder, the movable plate ( 130, 132, 134 are guided vertically by the guide shaft 122 and the housing 124, which enables more stable vertical movement. In addition, the vertical motion of the hemming rollers Ra, Rb, and Rc means substantially the movement in the direction indicated by the arrow B in FIG. 3. Therefore, by the vertical motion of the hemming rollers (Ra, Rb, Rc) as described above, the first hemming, the second hemming, and the third hemming are performed, for example, a partial hemming of the sunroofing part will be performed. .

In addition, other hydraulic cylinders 150, 152, and 154 are installed at lower ends of the movable plates 130, 132, and 134 through the brackets Br. The hydraulic cylinders 150, 152 and 154 are connected to the guide rollers Ga, Gb and Gc through the piston shaft. The guide rollers Ga, Gb, and Gc are operated in the direction of the arrow C of FIG. 3 by the hydraulic cylinders 150, 152 and 154.

For example, as described above, the first hemming roller Ra performs the first hemming of bending the outer panel by about 40 degrees, wherein the first guide roller Ga is formed of the outer panel. While being supported in contact with the side surface, after the first hemming roller Ra moves downward for the primary hemming, the first guide roller Ga moves horizontally to contact the side surface of the outer panel. In this contact state, while the first hemming roller Ra and the first guide roller Ga move, primary hemming in a predetermined section is performed.

In addition, each of the guide rollers Ga, Ga, and Gc moving in the side (horizontal direction) is provided at the front end of each of the hydraulic cylinders 150, 152, and 154, which are installed below the movable plates 130, 132, and 134, respectively. Each of the guide rollers (Ga, Gb, Gc), like each of the hemming rollers (Ra, Rb, Rc) is in close contact with the side of the outer panel to be hemmed, each hemming roller (Ra, Rb, Rc) Guides the user to perform the hemming process correctly.

Next, referring to Figures 7 and 8, the overall operation of the state in which the hemming device H is mounted according to the present invention will be described.

7 is a front view illustrating a process in which the hemming is performed while the hemming device H as described above moves in the left and right directions. As shown in the drawing, the hemming device H having the above-described configuration performs a hemming process on the panel P while moving left and right. That is, the ball screw 162 connected to it by the rotation of the servo motor (M) also rotates together. In addition, the ball screw block 166 coupled to the ball screw 162 may move in the left and right directions in FIG. 7 by the rotation of the ball screw 162. A slide plate 164 is mounted below the ball screw block 166 and a hemming device H described above is mounted below the slide plate 164. Therefore, when the servo motor (M) is operated to rotate the ball screw 162, the hemming device (H) of the present invention installed on the lower portion of the slide plate 164 moves in the horizontal direction with respect to the panel (P). The predetermined hemming process is performed.

In the above embodiment, the left-right movement of the hemming device H is performed by the servo motor, but the above-described hemming device H may be configured to be driven in the left-right direction by an automation device such as a robot. Do.

8 is a front view of the overall device according to the present invention. As illustrated, the servo motor M and the ball screw 162 shown in FIG. 7 are mounted to the lower portion of the horizontal frame 170. In addition, the horizontal frame 170 is configured to move up and down between a pair of vertical frames (172,174). The lifting and lowering of the horizontal frame 170 is a configuration required when loading or unloading a panel to be hemmed. That is, when a panel requiring a hemming process is loaded, the horizontal frame 170 is raised to load the panel, and when the panel is to be hemmed, the hemming apparatus is lowered by lowering the horizontal frame 170. H) is set at the position for the hemming treatment.

And in the illustrated embodiment, the configuration for the lifting and lowering of the horizontal frame 170, the motor (Ma) installed on the horizontal frame 170, the rotating shaft (Ms) rotated by the motor, and the rotating shaft And a pinion 176 provided at both ends of the rack, and a rack 178 meshed with the pinion and installed on inner surfaces of the vertical frames 172 and 174. Also in this embodiment, the raising and lowering of the hemming device H is achieved by a device using the motor Ma as a driving source, but the raising and lowering of the hemming device H can be achieved by any automated device such as a robot or the like. have.

That is, the hemming device H according to the present invention performs partial hemming of the vehicle body while performing the movement in the left and right direction and the vertical direction as a whole. In addition, the left and right and the shandong of such a hemming device is not limited to the illustrated embodiment, and may be used by being attached to various types of automation devices such as robots.

Next, the overall operation of the hemming apparatus according to the present invention will be described.

First, as shown in FIG. 8, when the horizontal frame 170 is raised, the hemming device H is raised as well. In this state, the panel to be hemmed is loaded. The horizontal frame 170 is lowered to set the hemming device H at a predetermined position.

Next, by operating the servomotor M shown in FIG. 7, the hemming device H is moved in one direction while hemming the panel P. FIG. When the hemming process is performed, firstly, the first hemming roller Ra descends from the hemming start line Ls, and then the first guide roller Ga is horizontally transferred and the external panel is about 40 degrees therebetween. First hemming with degree bending is performed. The first hemming is as shown in FIG. 3, and the first hemming roller Ra and the first guide roller Ga are shown in FIG. 3 as the hemming device H moves horizontally. In this state, the motor proceeds while moving to one side by the driving of the servomotor M shown in FIG. 7.

When the first hemming is completed, the outer panel is bent about 40 degrees. Then, the second hemming roller Rb is lowered and the second guide roller Gb is moved to the side (advanced). Hemming is about 80 to 90 degrees.

When the secondary hemming is completed, the third hemming roller Rc descends and the third guide roller Gc moves forward to perform the tertiary hemming in which the end of the outer panel completely surrounds the inner panel.

When the first hemming, the second hemming, and the third hemming are sequentially completed, the hemming of the outer panel and the inner panel is completed. Each hemming roller (Ra, Rb, Rc) has a hemming end line (L). As a result, the guide rollers Ga, Gb, and Gc are retracted to be lifted to the top and completed.

And the operation of each of the hemming roller and the guide roller is made by the hydraulic cylinder (110, 112, 114) and the hydraulic cylinder (150, 152, 154).

Each of the hemming rollers Ra, Rb, and Rc and the guide rollers Ga, Gb, and Gc has a shape capable of hemming the panel at a desired angle according to each hemming process. For example, the first hemming roller Ra is installed in an inclined state by about 50 degrees, and the first guide roller Ga is formed as a partial inverted cone shape having an outer circumference of the upper end having an angle of about 40 degrees. In this case, the first hemming of the panel may be performed about 40 degrees between the rear surface of the first hemming roller Ra and the distal end portion of the first guide roller Ga. And the outer circumference of the second hemming roller (Rb) and the second guide roller (Ga) is formed in a cylindrical shape is configured to be capable of secondary hemming to bend the panel of which the primary hemming is completed to about 80 to 90 degrees. The tertiary hemming roller Rc has a tapered shape in which the diameter decreases on both sides with respect to the middle portion so that the outer panel can be completely hemmed. Accordingly, it can be seen that the tertiary hemming roller Rc is configured to be able to fully hemm the outer panel toward the inner panel while the third guide roller Gc is in contact with the side of the panel.

Within the scope of the basic technical idea according to the present invention as described above, it can be seen that many other modifications are possible to those skilled in the art, the present invention should be interpreted based on the appended claims will be.

The present invention as described above, it can be seen that by using a plurality of hydraulic cylinder and hemming roller, it is configured to perform partial hemming of the vehicle itself. Thus, according to the present invention, it can be said that the advantages of being implemented with a relatively simple device and at the same time can perform a partial hemming with high reliability.

Claims (5)

As a hemming device which is movable up and down and left and right by a drive source; A plurality of hydraulic cylinders fixed to the frame; A plurality of hemming rollers which are movable up and down by the hydraulic cylinder, for hemming the panel; A plurality of guide rollers which come into close proximity to the respective hemming rollers when the panel is hemmed; And A roller-type hemming device comprising a plurality of hydraulic cylinders for moving the guide roller back and forth in the horizontal direction. The roller-type hemming device according to claim 1, further comprising a guide means for guiding the shandong of the hemming roller. 3. The roller-type hemming apparatus according to claim 2, wherein the hemming rollers guided by the guide means are respectively installed below the movable plate, and the movable plates are moved by hydraulic cylinders, respectively. 4. The roller hemming device according to claim 3, wherein the hydraulic cylinder for moving the guide roller in a horizontal direction is provided on a bottom surface of the movable plate. The method of claim 3, wherein the guide means, A guide shaft installed at an upper portion of the movable plate; Hemming device for a roller, characterized in that the housing is installed in the frame, the housing for slidably receiving the guide shaft.

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