KR102488819B1 - Jig apparatus for welding vehicle body with variable structue - Google Patents

Abstract

A jig apparatus supports a vehicle body to weld the vehicle body based on a variable structure and comprises: a main body (20) installed adjacent to a side hanger (11) and a quarter hanger (13), and transporting panels of a vehicle body by a cart (22); an upper moving part (30) arranged on both sides of the main body (20) to allow the position thereof to be changed, and supporting one side of the quarter hanger (13) by a grip part (35); a lower moving part (40) loading the upper moving part (30) to be horizontally moved, and supporting the lower side of the quarter hanger (13) by a placing part (42); and a controller (50) controlling the position change and the horizontal motion of the upper moving part (30) and the lower moving part (40). Accordingly, work is quickly and accurately switched in response to many vehicle types in the process of coupling panels making up a vehicle body by welding to increase process flexibility to improve productivity by reducing man-hours and labor.

Description

Jig apparatus for welding vehicle body with variable structure}

The present invention relates to a jig device for welding a car body of a vehicle, and more particularly, to a jig device for welding a vehicle body of a variable structure that supports a plurality of vehicles for welding together floor panels, side panels, roof panels, etc. will be.

Special efforts are being made to improve the productivity and quality of mass production in a situation where oversupply due to the mismatch between demand and supply continues along with unlimited competition due to globalization of the automobile industry. High-efficiency bonding technology is required based on various jig devices in assembling various parts constituting vehicles at mass production sites. Even in the case of a process of joining a floor panel, a side panel, a roof panel, etc. of a body frame by welding, the importance of a jig device connected to a robot system is inevitably increased.

As prior art documents that can be referred to in this regard, Korean Utility Model Registration No. 0391534 (Prior Document 1), Korean Patent Registration No. 1326833 (Prior Document 2), and the like are known.

In Prior Document 1, in constructing a welding jig base having a clamping device for automatic welding with a robot at the top, the transfer holes formed on the bottom of the jig base consist of eight, two sets of two in the middle of each side, , Process setting holes formed on the bottom of the jig base are configured at each of the four corners. Accordingly, an effect capable of automatically producing vehicle parts for multiple types of vehicles is expected.

Prior Document 2 is a jig frame mounted on the front end of the arm of the robot; A first clamping unit for clamping the welding flange portion of the side panel; a first position regulating unit regulating the upper end of the side panel; A second clamping unit clamping the lower end of the side panel; a second position regulating unit for positioning the side panel; Include etc. Accordingly, the effect of reducing the preparation period is expected through flexible production of multiple models.

However, the above prior literature shows room for improvement in terms of flexibility of the process for application to welding of more vehicle types.

Korean Registered Utility Model Publication No. 0391534 "Jig for Automotive Parts Welding Device" (Publication Date: 2005.08.03.) Korean Registered Patent Publication No. 1326833 "Multi-vehicle side common jig" (Publication date: 2013.06.14.)

An object of the present invention for improving the above-mentioned conventional problems is to increase process flexibility by rapidly and accurately changing operations corresponding to many vehicle models in the process of welding a floor panel, side panel, roof panel, etc. of a vehicle body. It is an object of the present invention to provide a jig device for welding a vehicle body having a variable structure that can be increased.

In order to achieve the above object, the present invention provides a jig device for supporting a vehicle body to be welded based on a variable structure: a main body installed adjacent to a side hanger and a quarter hanger and transporting panels of a vehicle body by a bogie; an upper moving table disposed on both sides of the main body so as to be able to change posture and supporting one side of the quarter hanger with a gripping part; a lower movable table for mounting the upper movable table so as to be horizontally movable and supporting the other side of the quarter hanger with a seating portion; and a controller for controlling posture change and horizontal motion of the upper and lower movable tables.

As a detailed configuration of the present invention, the main body is characterized in that it includes a slide drive unit that induces horizontal motion of at least some components.

As a detailed configuration of the present invention, the upper movable table is characterized in that it has a plurality of mounting surfaces to mount a plurality of quarter hangers.

As a detailed configuration of the present invention, the lower movable table is characterized in that it has a central shaft integrally connected to the bottom surface of the upper movable table, a lift drive unit for causing vertical movement of the central shaft, and a rotation drive unit for causing rotational movement of the central shaft. .

As a detailed configuration of the present invention, the lower movable table is characterized by inducing a posture change at an arbitrary angle at an arbitrary height by connecting the elevation driving unit and the rotation driving unit to a support plate supporting the central axis to be capable of vertical and rotational movement. .

As a detailed configuration of the present invention, the controller is characterized in that it differentially controls the three-axis movement of the upper movable table in response to the panel according to the vehicle type based on the microcomputer circuit.

As described above, according to the present invention, in the process of joining the panels constituting the vehicle body by welding, work switching corresponding to many vehicle types is prompt and accurate, thereby increasing process flexibility, so that there is an effect of improving productivity through reduction of man-hours and labor saving. there is.

1 is a perspective view showing the device according to the present invention as a whole
Figure 2 is a schematic diagram showing the device according to the present invention in a plane
Figure 3 is a schematic diagram showing the main part of the device according to the present invention
Figure 4 is a schematic diagram showing a detailed configuration and operation example according to the present invention
Figure 5 is a schematic diagram showing an operation example of the device according to the present invention

Hereinafter, embodiments of the present invention will be described in detail based on the accompanying drawings.

The present invention proposes a jig device for supporting a vehicle body to be welded based on a variable structure. It targets jig devices used in the process of welding and combining floor panels, side panels, roof panels, etc. constituting the skeleton of a vehicle, but is not necessarily limited thereto.

Referring to FIG. 1 , the side panels SP are coupled to both sides of the floor panel FP, and the roof panel RP is coupled to the upper side of the side panels SP. The quarter panel QP may be included in the side panel SP in a broad sense. Depending on the vehicle model (model), it is usually composed of only the integrated side panel (SP), but sometimes the side panel (SP) is reduced and a separate quarter panel (QP) is connected to the rear side. In addition, although not shown, a roof rail, a cowl panel, a package tray, and the like are included. These panels are transported by a plurality of feed robots (not shown) and joined by spot welding by a welding robot (not shown).

According to the present invention, the body 20 for transferring the panels of the vehicle body by the bogie 22 has a structure installed adjacent to the side hanger 11 and the quarter hanger 13.

1 and 2, the side hanger 11 and the quarter hanger 13 on both sides of the base of the main body 20 shows a state that opposes symmetrically. The main body 20 supports the trolley 22 to be transportable through the rail 21 to the upper side of the base. In a series of processes, a plurality of bases and the trolley 22 are continuously connected, and the trolley 22 moves to the next process through the transfer unit 23.

The base of the main body 20 closely supports the floor panel FP corresponding to the underbody of the vehicle body on the bogie 24 in place. The side hanger 11 regulates the side panel SP to a set position (posture) on the floor panel FP. The quarter hanger 13 regulates the quarter panel QP to a set position (posture) on the floor panel FP. The roof rail and the roof panel (RP) transported through a separate upper path (rail) are regulated by the roof hanger 15 at the upper end of the side panel (SP).

On the other hand, the side hanger 11, the quarter hanger 13, and the roof hanger 15 have a modular structure in which a plurality of grippers differentiated according to vehicle models and grades are integrally mounted on the body. The side hanger 11 and the quarter hanger 13 are arranged to face each other on both sides of the main body 20 . In any case, the hangers of the module structure can be easily replaced with a separate robot (not shown) using the holder part 17 exposed to one side of the body.

As a detailed configuration of the present invention, the main body 20 is characterized in that it includes a slide drive unit 27 that induces horizontal movement of at least some components.

Referring to FIGS. 1 and 3 , sliding actuators 27 are disposed on both sides of the base of the main body 20 adjacent to the fixing table 25 . The sliding driver 27 induces horizontal movement in the Y-axis direction perpendicular to the X-axis direction in which the bogie 22 moves. The sliding driving unit 27 is involved in the horizontal movement of the upper movable table 30 and the lower movable table 40 to be described later, but is not limited thereto, and horizontal movement of other components is also possible. An LM guide, a lead screw-nut, and a rack-pinion method are selectively applied to the slide drive unit 27.

At this time, the fixing base 25 of the main body 20 is arranged to detachably mount the side hanger 11 . A buffer roller for reducing friction with the side hanger 11 is installed on the mounting surface of the fixing table 25 . It is good to consider the welding condition of a vehicle model not equipped with a quarter panel (QP) for the arrangement position of the fixing table (25).

In addition, according to the present invention, the upper movable table 30 supporting one side of the quarter hanger 13 with the gripping part 35 has a structure in which the posture change is possible on both sides of the main body 20.

In FIG. 3 , an alignment surface 31 , a bearing surface 33 , and a gripping portion 35 constituting the upper movable table 30 are shown. The upper movable table 30 has a high-strength slim structure to prevent interference with surrounding objects. The alignment surface 31 is a part formed on the bottom surface and engaged with the lower movable table 40 in an accurate position. The passing surface 33 is formed to be in close contact with one side of the passing surface of the quarter hanger 13 . The gripping part 35 may be configured by using a plurality of clampers in the upper region of the bearing surface 33 . The posture change of the upper movable table 30 is realized through multi-axis motion, and interference or collision is prevented in the process of attaching or detaching (replacing) the quarter hanger 13.

As a detailed configuration of the present invention, the upper movable table 30 is characterized in that it has a plurality of mounting surfaces 33 to mount a plurality of quarter hangers 13.

In FIG. 3, a quarter hanger of reference numeral 13 and a quarter hanger of reference numeral 13' are simultaneously mounted on two bearing surfaces 33. The former is put into a welding process and can support the panel, and the latter is a state waiting for the next input in response to a change in the target vehicle type. According to such a configuration, process change can be speedy and the flexibility of process management can be increased. The contact surface 33 on one side and the contact surface 33 on the other side maintain the same, but may be configured differentially.

In addition, according to the present invention, the lower movable table 40 supporting the other side of the quarter hanger 13 with the seating portion 42 has a structure in which the upper movable table 30 is mounted so as to be horizontally movable.

Referring to FIGS. 3 and 4 , an alignment surface 41 , a mounting surface 33 , and a seating portion 42 constituting the lower movable table 40 are shown. The lower movable table 40 has a high-strength slim structure to prevent interference with surrounding objects. The alignment surface 41 is formed in a pin-hole engagement structure together with the above-described alignment surface 31 on the upper surface, and induces an accurate coupling posture. The passing surface 33 is formed to be in close contact with the other passing surface of the quarter hanger 13 . The seating portion 42 may be configured by using a plurality of fixing pins in a partial region of the bearing surface 33 . The quarter hanger 13 maintains a tight mounting state by the gripping part 35 and the seating part 42 .

At this time, the lower movable table 40 is mounted on the slide driving unit 27 of the main body 20 and performs horizontal movement in at least the Y-axis direction. The quarter hanger 13 also reduces the risk of interference or collision during the replacement process while horizontally moving by the sliding drive unit 27.

As a detailed configuration of the present invention, the lower movable table 40 includes a central axis 43 integrally connected to the bottom surface of the upper movable table 30, and a lift drive unit 46 that causes vertical movement of the central axis 43 , It is characterized by having a rotation drive unit 48 for inducing rotational movement of the central axis 43.

Referring to FIGS. 3 and 4 , a central axis 43 constituting the lower movable table 40 , a lift drive unit 46 , a rotation drive unit 48 , and the like are shown. The central axis 43 is coupled to coincide with the center of gravity of the upper movable table 30 while being supported so as to be able to move up and down. The lift driver 46 causes the upper movable table 30 to move up and down through the central axis 43, and the rotation driver 48 causes the upper movable table 30 to rotate through the central axis 43. do. The risk of interference or collision of the quarter hanger 13 is reduced by the lifting and rotating movements of the upper movable table 30.

As a detailed configuration of the present invention, the lower movable table 40 connects the lift drive unit 46 and the rotation drive unit 48 to a support plate 45 that supports the central shaft 43 so as to be capable of up and down movement and rotational movement, respectively. Characterized in that it induces a posture change at an arbitrary angle at an arbitrary height.

4 and 5, the support part 44 connected to the central axis 43 of the lower movable table 40, the support plate 45, the lift drive unit 46, the rotary drive unit 48, etc. are shown in detail. . The central axis 43 has a collar in the middle. The support plate 45 surrounds and supports the collar of the central axis 43 via the support part 44 . The lifting drive unit 46 can be implemented in a ball screw-nut block-motor method, and the rotary drive unit 48 can be implemented in a way in which a motor is connected to a worm gear equipped with a worm and a worm wheel. A nut block of the lift drive unit 46 is connected to one side of the support plate 45, and a worm and a motor of the rotary drive unit 48 are mounted on the other side of the support plate 45.

Accordingly, the welding process proceeds with the upper movable table 30 and the lower movable table 40 in close contact as shown in FIG. 4 (a), and the nut block of the lift drive unit 46 rises or The worm gear of the rotary drive unit 48 is rotatable. Like the upper portion of FIG. 5, the upper movable table 30 can move horizontally to the position of 30', and can rotate at least 180 degrees around the central axis 43 at the position of 30', like the lower part of Do. The upper movable table 30 is raised to a predetermined height and rotated at an arbitrary angle to reduce the risk of interference or collision when the quarter hanger 13 is replaced.

In addition, according to the present invention, the controller 50 has a structure in which the upper movable table 30 and the lower movable table 40 control posture changes and horizontal movements.

1 and 3, the controller 50 includes a posture detector 51, a lift detector 53, a rotation detector 55, a slide detector 57, a slide drive unit 27, a lift drive unit 46, and a rotation drive unit. (48), etc. The posture detector 51 detects a state in which the quarter hanger 13 is properly seated on the upper movable table 30 and the lower movable table 40 . In addition, the posture detector 51 may detect an alignment state in the alignment surfaces 31 and 41 of the upper movable table 30 and the lower movable table 40 . The elevation detector 53 detects the operating state (height, etc.) of the elevation driving unit 46, the rotation detector 55 detects the operating state (angle, etc.) of the rotation driving unit 48, and the slide detector 57 The operating state (distance, etc.) of the slide drive unit 27 is detected.

As a detailed configuration of the present invention, the controller 50 is characterized in that it differentially controls the three-axis movement of the upper movable table 30 in response to the panel according to the vehicle model based on the microcomputer circuit.

The controller 50 is composed of a microprocessor, memory, and a microcomputer circuit equipped with an input/output interface. The controller 50 assists the quarter hanger 13 mounted in the north hand to be quickly and accurately replaced while realizing the horizontal motion, elevation motion, and rotation motion of the upper movable table 30. Of course, the controller 50 stores coordinate information about the three-axis motion of the quarter hanger 13 according to the vehicle type (body model) in the memory.

The present invention is not limited to the described embodiments, and it is obvious to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such variations or modifications should fall within the scope of the claims of the present invention.

11: side hanger 13: quarter hanger
15: roof hanger 17: holder part
20: body 21: rail
22: bogie 23: transfer unit
25: fixed stand 27: sliding drive unit
30: upper movable table 31: alignment surface
33: rough surface 35: gripping part
40: lower movable table 41: alignment surface
42: seating part 43: central axis
44: support 45: support plate
46: lift drive unit 48: rotation drive unit
50: controller 51: attitude detector
53: lift detector 55: rotation detector
57: sliding detector

Claims (6)

In a jig device for supporting a vehicle body to be welded based on a variable structure:
A main body 20 installed adjacent to the side hanger 11 and the quarter hanger 13 and transferring the panels of the vehicle body to the bogie 22;
an upper movable table 30 disposed on both sides of the main body 20 so as to be able to change posture and supporting one side of the quarter hanger 13 with a gripping part 35;
a lower movable table (40) for mounting the upper movable table (30) horizontally and supporting the other side of the quarter hanger (13) with a seating portion (42); and
A controller 50 for controlling the posture change and horizontal movement of the upper movable table 30 and the lower movable table 40;
The main body 20 is provided with a slide drive unit 27 that induces horizontal movement of at least some components,
The upper movable table 30 has a plurality of mounting surfaces 33 to mount a plurality of quarter hangers 13,
The lower movable table 40 includes a central shaft 43 integrally connected to the bottom surface of the upper movable table 30, a lift drive unit 46 that causes the vertical movement of the central shaft 43, and a central shaft 43. Equipped with a rotary drive unit 48 for inducing rotational motion,
The lower movable table 40 connects the lift drive unit 46 and the rotation drive unit 48 to a support plate 45 that supports the central shaft 43 so as to be capable of up and down movement and rotational movement. A jig device for welding a car body having a variable structure, characterized in that it induces a change in attitude. delete delete delete delete The method of claim 1,
The controller 50 differentially controls the three-axis movement of the upper movable table 30 in response to the panel according to the vehicle model based on the microcomputer circuit.

Images