JP3655137B2 - Body assembly equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle body assembly apparatus that assembles an automobile body by welding and joining left and right side panels to a floor.
[0002]
[Prior art]
Conventionally, as this type of vehicle body assembly apparatus, Japanese Patent Publication No. 63-53073 discloses a set carriage that can reciprocate between a set station and a vehicle body assembly station, and a stand disposed on each of the left and right outer portions of the vehicle body assembly station. And a jig mounted in an inward orientation facing inward in the lateral direction, and a floor support member that positions and supports the floor of the automobile body on the set carriage, and the floor and the left and right side panels of the automobile body A side sill receiving member that receives the side sill portion that is a joint portion and a side panel pressing member that presses both side panels against the floor from the outside in the lateral direction are provided, and the floor and both side panels are set on the set carriage at the set station. To the body assembly station, and each side panel on the set carriage is Receive a state in combination on the floor, those to assemble the car body welded to the respective side panel in this state the floor is known by.
[0003]
In this device, a plurality of welding guns are mounted on a jig, and the side panels are welded to the floor by these welding guns.
[0004]
[Problems to be solved by the invention]
Jigs are dedicated to each model of automobile. If a welding gun is mounted on a jig as in the above-mentioned conventional example, the cost of the jig increases. Expensive.
[0005]
In this case, if a plurality of welding robots are provided at the left and right sides of the vehicle body assembly station below the jigs, and the side panels are welded and connected to the floor by the welding robots, Equipment costs can be reduced by eliminating the need for welding guns.
[0006]
However, when the welding robot is arranged in this manner, the side sill receiving member and the side panel pressing member provided on the set carriage can interfere with the welding robot and return the set carriage to the set position during welding work by the welding robot. Therefore, after the side panel and the floor are received by the jig, the set carriage must be moved back to the set position and welding work by the welding robot must be started, and the set carriage is moved back to the set position. The time required for this becomes a loss time and the cycle time is prolonged.
[0007]
SUMMARY OF THE INVENTION In view of the above, the present invention provides a vehicle body assembly apparatus that can start a welding operation by a welding robot without waiting for the return of a set carriage to a set station to shorten the cycle time. It is an issue.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a set carriage that can reciprocate between a set station and a vehicle body assembly station, and a frame disposed on each of the left and right outer sides of the vehicle body assembly station. And a side sill that receives a side sill portion that is a joint between the floor and the left and right side panels of the automobile body. A receiving member and a side panel pressing member that presses both side panels against the floor from the outside in the lateral direction, and the floor and both side panels are set on the set carriage at the set station and conveyed to the vehicle body assembly station. Receiving each side panel on the set trolley at the body assembly station in combination with the floor using each jig In this state, each side panel is welded and joined to the floor to assemble the vehicle body. The vehicle body assembly apparatus is positioned below each jig on the left and right sides of the body assembly station, and each side panel is placed on the floor. In the arrangement of a plurality of welding robots that are welded to each other, the set carriage is provided with a side panel receiving member and a side panel pressing member that can be retracted to a retracted position that does not cause interference with the welding robot during the welding operation. ing.
[0009]
According to the present invention, even if the welding operation between the side panel and the floor by the welding robot is started immediately after the side panel on the set carriage is received by the jig in a state of being combined with the floor, the receiving member for the side sill By pulling the side panel pressing member into the retracted position, the set jig can be moved back to the set station without causing interference with the welding robot. Thus, welding work by the welding robot can be started without waiting for the return of the set carriage to the set station, and the cycle time can be shortened to improve productivity.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a vehicle body assembly apparatus for assembling an automobile body W by welding the left and right side panels W5, W5 to the floor W1, the roof W2, the dashboard upper W3, and the rear tray W4 shown in FIG. explain.
[0011]
As shown in FIGS. 1 and 2, the vehicle body assembling apparatus is configured by a straight line that is long in the front-rear direction in which the set station ST1, the vehicle body assembly station ST2, and the payout station ST3 are arranged in order from the upstream side. A pair of left and right guide rails 1 and 1 are laid on the line over the entire length of the line, and a set carriage that reciprocates between the set station ST1 and the vehicle body assembly station ST2 on the guide rails 1 and 1. 2 and a payout carriage 3 that reciprocates between the vehicle body assembly station ST2 and the payout station ST3. At the set station, the floor W1, the roof W2, the dashboard upper W3, the rear tray W4, and the left and right side panels W5 are set on the set carriage 2 in a forward posture in which the front of the vehicle body faces the front of the line. Is moved forward to the vehicle body assembly station ST2, and the left and right side panels W5 and W5 are welded to the floor W1, the roof W2, the dashboard upper W3 and the rear tray W4 at the station ST2, and the vehicle body W thus assembled is delivered. The vehicle 3 is transported to the payout station ST3, and the vehicle body W is transported from the station ST3 to the additional hitting line by a transport device (not shown).
[0012]
A pair of first set robots 4 and 4 for the side panel W5 are disposed on the left and right outer portions of the set station ST1, and further, one of the left and right ends of the end of the set station ST1 on the vehicle body rear (line rear) side. The second set robot 5 for the roof W2 and the rear tray W4 is arranged on the outer side of the vehicle, and a third for the dashboard upper W3 is provided on one of the left and right outer sides of the end of the set station ST1 on the front side of the vehicle body (front of the line). A set robot 6 is arranged. When the set carriage 2 is moved back to the set station ST1, the floor W1 is set on the set carriage 2 from the rear of the line by a transfer device (not shown), and the first to third set robots 4, 5, 6 Thus, the side panel W5, the rear tray W4, the roof W5, and the dashboard upper W3 are set.
[0013]
As clearly shown in FIG. 3, the set robots 4, 5, and 6 each have a swivel base 4a, 5a, 6a that can swivel about a vertical axis, and a first robot arm 4b, 5b, 6b, second robot arms 4c, 5c, 6c connected to the tip of the first robot arm in a swingable manner, and wrists 4d, 5d, 6d having a three-axis structure connected to the tip of the second robot arm 6 It is composed of a multi-joint robot.
[0014]
A side panel holder 4e is attached to the wrist 4d, which is the operation end of the first set robot 4, and is carried into an appropriate supply position such as around the arrangement portion of the first set robot 4 or above the set station ST1. The side panel W5 is held by the side panel holder 4e, and the side panel W5 is set on the set carriage 2 by the first set robot 4.
[0015]
A dashboard upper holder 6e is attached to the wrist 6d, which is the operation end of the third set robot 6, and a dashboard upper W3 carried into an appropriate supply position around the arrangement portion of the third set robot 6 is installed. The third set robot 6 is held at a predetermined set position between the left and right side panels W5 and W5 which are held by the dashboard upper holder 6e and set by the pair of left and right first set robots 4 and 4 on the set carriage 2. To set the dashboard upper W3.
[0016]
A roof holder 5e that holds the roof W2 is attached to the wrist 5d that is the operation end of the second set robot 5. The rear tray holder 5e is positioned at the end of the roof holder 5e near the front end of the roof W2 on the back side of the roof holder 5e, and holds the rear tray W4 with its lower surface facing the front of the roof W2. A tool 5f is attached. Then, after holding the roof W2 and the rear tray W4 carried into appropriate supply positions around the arrangement portion of the second set robot 5 with the roof holder 5e and the rear tray holder 5f, respectively, As shown in FIG. 4A, the roof holder 5e is in a standing posture in which the rear tray holder 5f faces downward, and in this state, the rear portions of the left and right side panels W5 and W5 on which the rear tray W4 is set on the set carriage 2 are placed. Set at a predetermined set position between the upper edges. At this time, the roof W2 stands up at a position offset to the rear of the vehicle body (the rear of the line) with respect to the rear tray W4, and the rear tray W4 can be set without causing the interference of the roof W2 with respect to the side panel W5. Next, the attitude of the roof holder 5e is changed to a horizontal attitude as shown in FIG. 4B, and the roof W2 is set between the upper edges of the left and right side panels W5 and W5. Thus, the number of robots used can be reduced and the equipment cost can be reduced by setting the rear tray W4 and the roof W2 by the second set robot 5.
[0017]
As shown in FIGS. 1, 2 and 5, laterally movable along the guide rail 7b on the fixed base 7a is provided at the left and right outer portions of the vehicle body assembly station ST2, and a feed screw 7d is provided by a motor 7c. A platform 7 that is moved back and forth between a laterally inward working position (a position in the right half of FIG. 5) and a laterally outward standby position (a position in the left half of FIG. 5), A jig 8 that positions and holds the side panel W5 is mounted in an inward posture facing inward in the lateral direction on an upper frame 70 that is long in the front-rear direction and fixed to the top of the gantry 7. Further, the vehicle body assembly station ST2 is provided with a plurality of positioning pins 9a that are fitted into a plurality of positioning holes formed on the lower surface of the set carriage 2, and is lifted and lowered by a motor 9b via a rack and pinion mechanism 9c. 9 is provided. Then, after the set carriage 2 is moved forward to the vehicle body assembly station ST2, the set carriage 2 is positioned and lifted from the guide rail 1 by raising the elevating stand 9, and in this state, the gantry 7 is moved to the working position, Each side panel W5 on the carriage 2 is received by the jig 8 in a state of being combined with the floor W1, the roof W2, the dashboard upper W3, and the rear tray W4.
[0018]
In addition, on the left and right sides of the vehicle body assembly station ST2, a fixed frame 10 that is long in the front-rear direction and located below the jig 8 is disposed. The fixed frame 10 and the upper frame 70 of the gantry 7 are disposed on the left and right sides. Four welding robots 11 and 12 are mounted, and the side panel W5 held by the jig 8 is welded to the floor W1 by the welding robot 11 mounted on the fixed frame 10, and the side panel W5 is attached to the upper frame 70. The mounted welding robot 12 is welded to the roof W2, the dashboard upper W3, and the rear tray W4.
[0019]
Each of the welding robots 11 and 12 includes a robot main body 11a and 12a movable in the front-rear direction along guide rails 10a and 70a fixed to the fixed frame 10 and the upper frame 70, and a first pivotally connected to the robot main body. 6 having robot arms 11b and 12b, second robot arms 11c and 12c swingably connected to the tip of the first robot arm, and wrists 11d and 12d having a three-axis structure connected to the tip of the second robot arm. Spot welding is performed by moving the welding gun G attached to the wrists 11d and 12d to predetermined hitting points connecting the side panel W5 and other vehicle body components such as the floor W1.
[0020]
The gantry 7 is formed in a T-shape in which the length of the lower portion 71 is shorter than the length of the upper frame 70 in the front-rear direction, and is a space that reaches the fixed frame 10 in front of and behind the lower portion 71 of the gantry 7. Space is secured. Thus, by tipping the welding robots 11 on the fixed frame 10 to the front and rear portions of the fixed frame 10 facing these empty spaces, the tip dressing of the welding gun G is applied to all the welding robots 11 on the fixed frame 10. Such maintenance work can be performed with good workability in an empty space.
[0021]
As clearly shown in FIG. 6, the set cart 2 has four pairs of front and rear floor support members 20 for positioning and supporting the floor W <b> 1 at four front and rear positions. ₁ , 20 ₂ , 20 _Three , 20 _Four And a pair of front and rear side sill receiving members 21 each receiving a side sill portion which is a joint portion between the floor W1 and each side panel W5 at two front and rear positions. ₁ , 21 ₂ And the left and right side panels W5, W5 are pressed by the front pillar portion and the rear wheel house portion from the outside in the lateral direction. ₁ , 22 ₂ And a side panel pressing member 22. ₁ , 22 ₂ As a result, the left and right side panels W5, W5 are pressed against the floor W1, and the roof W2, the dashboard upper W3, and the rear tray W4 are sandwiched between the side panels W5, W5.
[0022]
Floor support member 20 ₁ ~ 20 _Four Is composed of a pin-like member that fits into a hole formed in the floor W1. Here, the floor support member 20 that supports the floor W1 at the front end of the passenger compartment. ₂ Is standing on the fixed frame 23 on the set carriage 2 and does not move with respect to the set carriage 2, but the remaining floor support member 21 ₁ , 20 _Three , 20 _Four The position can be adjusted front and rear, left and right, and up and down by a cross table unit 24 having a three-axis structure so as to cope with changes in the vehicle type. The cross table unit 24 is provided with a second table 24b that moves up and down on a first table 24a that moves back and forth, and a pair of left and right third tables 24c and 24c that approach and separate in the lateral direction are mounted on the second table 24b. Each floor support member 20 is formed on the third table 24c. ₁ , 20 _Three , 20 _Four Is standing.
[0023]
Each side sill receiving member 21 ₁ , 21 ₂ However, the position can be adjusted back and forth and up and down to cope with changes in the vehicle type. That is, an elevating frame 26 that is moved up and down by a motor 26a via a feed screw mechanism 26b is provided on a movable frame 25 that moves back and forth, and each side panel receiving member 21 is provided on the elevating frame 26. ₁ , 21 ₂ Is installed. Also, each side sill receiving member 21 ₁ , 21 ₂ As is clearly shown in FIG. 7, the cylinder 21a is attached to the lifting frame 26 so as to be swung in the vertical direction via the toggle link mechanism 21b. The hatched area in FIG. 7 is an interference area with respect to the welding robot 11 when the welding robot 11 on the fixed frame 10 is performing a welding operation. ₁ , 21 ₂ Each side sill receiving member 21 is swung downward. ₁ , 21 ₂ Is retracted to the retracted position indicated by the phantom line in FIG.
[0024]
A pair of left and right first side panel pressing members 22 that press the front pillar portion of the side panel W5. ₁ , 22 ₁ 8 and 9, a pair of left and right slide frames 22 are movable in the horizontal direction. ₁ a, 22 ₁ a and cylinder 22 respectively. ₁ It is attached so that it can be moved up and down by b. Both slide frames 22 ₁ a is a pair of left and right feed screws 22 driven synchronously via a belt by a motor (not shown). ₁ c, 22 ₁ By c, it is moved synchronously inward and outward in the lateral direction. Thus, both first side panel pressing members 21. ₁ , 21 ₁ Both slide frames 22 in a state of standing ₁ a, 22 ₁ The left and right side panels W5 and W5 can be pressed from the outside in the lateral direction by moving a inward in the lateral direction. Also, the first side panel pressing member 22 ₁ Slide frame 22 in a state where the vehicle is lying forward in front of the vehicle body (front of the line) ₁ The first side panel pressing member 22 is moved by moving a to the laterally inner end position indicated by the phantom line in FIG. ₁ Is retracted to a retracted position that does not cause interference with the welding robot 11 during the welding operation.
[0025]
A pair of left and right second side panel pressing members 22 that press the rear wheel house portion of the side panel W5. ₂ , 22 ₂ 10 and 11 are mounted on a movable frame 27 that moves back and forth so as to cope with vehicle type changes by adjusting the position in the front-rear direction. On the movable frame 27, a pair of left and right slide frames 22 that are movable in the horizontal direction. ₂ a, 22 ₂ a is offset in the front-rear direction and each slide frame 22 is provided. ₂ a is a pressing member 22 for each second side panel. ₂ The cylinder 22 ₂ It is attached so that it can be moved up and down by b. On the movable frame 27, both slide frames 22 are provided. ₂ a, 22 ₂ A pair of front and rear feed screws 22 respectively connected to a ₂ c, 22 ₂ c is pivotally supported, and double feed screw 22 ₂ c, 22 ₂ c at one end of the gear 22 ₂ d through one feed screw 22 ₂ motor 22 with c mounted on movable frame 27 ₂ Both slide frames 22 are driven by belt drive at e. ₂ a, 22 ₂ a is moved synchronously inward and outward in the lateral direction. Thus, both second side panel pressing members 22. ₂ , 22 ₂ Both slide frames 22 in a state of standing ₂ a, 22 ₂ The left and right side panels W5 and W5 can be pressed from the outside in the lateral direction by moving a inward in the lateral direction. Also, each second side panel pressing member 22 ₂ Is cylinder 22 ₂ It is configured to be expanded and contracted by f. And the pressing member 22 for 2nd side panels ₂ Slide frame 22 in a state of lying down laterally outward. ₂ a is moved inward in the lateral direction and the second side panel pressing member 22 ₂ By contracting the second side panel pressing member 22. ₂ Is retracted to the retracted position indicated by the phantom line in FIG. 10 which does not cause interference with the welding robot 11 during the welding operation.
[0026]
Thus, at the vehicle body assembly station ST2, even if the welding operation by the welding robot 1 is started immediately after the side panel W5 on the set carriage 2 is received by the jig 5 together with other vehicle body components such as the floor W1, Side sill receiving member 21 ₁ , 21 ₂ And side panel pressing member 22 ₁ , 22 ₂ Can be moved back to the set station ST 1 without causing interference with the welding robot 11. Therefore, the welding operation at the vehicle body assembly station ST2 can be started without waiting for the set carriage 1 to return to the set station ST1, and the cycle time can be shortened.
[0027]
By the way, the jig 8 mounted on the gantry 7 is dedicated for each vehicle type, and it is necessary to replace the jig 8 when changing the vehicle type. Therefore, a jig changing device 13 is disposed adjacent to the front of the gantry 7 on the left and right outer portions of the payout station ST3 so that the jig 8 can be exchanged between the gantry 7 and the jig changing device 13. .
[0028]
A support frame 72 for the jig 8 is provided on the upper frame 70 of the gantry 7, and is opposed to the support frame 72 in the vertical direction attached to the back side of the jig 8 as shown in FIGS. 12 to 14. A plurality of roller units 73 serving as upper and lower guide members engaged with a pair of upper and lower guide rails 8 a and 8 a are attached, and a jig 8 is attached to the support frame 72 via the guide rails 8 a and 8 a and the roller unit 73. It is supported so that it can move in the front-rear direction while maintaining its inward posture.
[0029]
The support frame 72 is supported by the cylinder 72a so as to be able to contact and separate in the lateral direction with respect to the upper frame 70 via a pair of front and rear guide bars 72b and 72b. The upper frame 70 is provided with a vertical positioning member 74 and a longitudinal positioning member 75, and when the support frame 72 is pulled toward the upper frame 70, the vertical positioning provided on the back surface of the jig 8 is provided. The engagement member 8b and the positioning engagement member 8c in the front-rear direction engage with the corresponding positioning members 74, 75, respectively, so that the jig 8 is positioned in the vertical direction and the front-rear direction with respect to the upper frame 70. I have to. The upper frame 70 further includes a clamp member 77 having a swing-type clamp rod 77a for clamping the jig 8 so that the back surface thereof is in close contact with a receiving seat 76 serving as a lateral positioning reference fixed to the upper frame 70. Is provided. Thus, when the support frame 72 is pulled toward the upper frame 70 and the clamp member 77 is operated, the jig 8 is fixed to the upper frame 70 in a three-dimensionally positioned state.
[0030]
As shown in FIGS. 15 and 16, the jig exchanging device 13 includes a rotating body 131 that is pivotally supported on a base 130 so as to be rotatable about an axis in the front-rear direction. A circular wheel 131a is fixed to the front end of the rotating body 131, and a motor 131d having a sprocket 131c on the output shaft that meshes with a chain 131b wound around the outer periphery of the wheel 131a is attached to the base 130, and the motor 131d The rotating body 131 can be rotated.
[0031]
The rotating body 131 is configured by a frame body that is framed in a longitudinal rectangle in the front-rear direction. The stock frames 132 for the jig 8 are attached to both side surfaces of the rotating body 131, and both stock frames are rotated by the rotation of the rotating body 131. Any one of 132 and 132 can be freely selected as a laterally inner exchange position. Each stock frame 132 is provided with a plurality of roller units 133 as upper and lower guide members with which a pair of upper and lower guide rails 8a, 8a of the jig 8 are engaged. It is supported by the stock frame 132 through the guide rails 8a, 8a and the roller unit 133 so as to be movable in the front-rear direction.
[0032]
The replacement position is the same as that of the roller unit 73 on the support frame 72 and the stock frame 132 in the replacement position when the gantry 7 is moved to the standby position and the support frame 72 is moved laterally inward from the upper frame 70. The roller unit 133 is set so as to be aligned on a straight line in the front-rear direction. Thus, the jig 8 is moved between the stock frame 132 and the support frame 72 selected at the replacement position, and the roller units 133 and 73 are arranged. It is possible to change the position in the inward posture.
[0033]
Further, the stock frame 132 is provided with a detaching mechanism 134 that detaches each roller unit 133 from each guide rail 8a by narrowing the distance between the upper and lower roller units 133, 133. Thus, another jig 8 can be placed on the stock frame 132 by releasing the engagement between the guide rail 8a and the roller unit 133. The detaching mechanism 134 includes a pair of upper and lower slide plates 134b and 134b supported by rails 134a fixed to the stock frame 132, and a cylinder 134d that moves the slide plates 134b and 134b closer to and away from each other via a toggle link 134c. The upper and lower roller units 133 and 133 are attached to the slide plates 134b and 134b, respectively, and the distance between the upper and lower roller units 133 and 133 is reduced by the close movement of the slide plates 134b and 134b. I am doing so.
[0034]
The base 130 is further provided with a transport mechanism 135 that transports the jig 8 in the front-rear direction between the stock frame 132 and the support frame 72 at the replacement position. The transport mechanism 135 has a hook 135c that can be engaged with a hooking portion 8d suspended from the front end of the jig 8 on a traveling body 135b supported by a guide rail 135a on a base 130 so as to be movable back and forth by a cylinder 135d. It is configured to be undulated. A motor 135g having a sprocket 135f on the output shaft that meshes with a chain 135e fixed to the base 130 is mounted on the traveling body 135, and the traveling body 135 travels along the guide rail 135a by the motor 135g.
[0035]
In addition, the rotating body 131 corresponds to the pair of stock frames 132 and 132, and a pair of clamp members 137 and 137 that are opened and closed by a pair of stoppers 136 and 136 at the front end and a cylinder 137a at the rear end. The jig 8 supported by each stock frame 132 can be sandwiched between each stopper 136 by each clamp member 137.
[0036]
When exchanging the jig, the gantry 7 is moved to the standby position, the clamp member 77 is unclamped, and then the support frame 72 is separated from the upper frame 70 inward in the lateral direction so as to be positioned in the vertical and lateral directions. The joint members 8b and 8c are separated from the corresponding positioning members 74 and 75, and the traveling body 135b is moved backward to raise the hook 135c, and the used jig 8 supported by the support frame 72 is hooked. The hook 135c is engaged with the portion 8d. Next, the traveling body 135b is moved forward, and the used jig 8 is transferred from the support frame 72 to one stock frame 132 located at the replacement position. When this transfer is completed, the clamp member 137 for the one stock frame 132 is closed and the hook 135c is laid down, and then the rotating body 131 is rotated to support the jig 8 for the next vehicle type. Stock frame 132 is selected as the replacement position. Next, the hook 135c is raised, the hook 135c is engaged with the hook portion 8d of the jig 8 supported by the other stock frame 132, and the clamp member 137 for the other stock frame 132 is opened. Next, the traveling body 135b is moved rearward, the jig 8 for the next vehicle type is transferred from the other stock frame 132 to the support frame 72, and then the support frame 72 is pulled toward the upper frame 70 and the clamp member. 77, the jig 8 is clamped, and the jig replacement is completed. After the jig replacement is completed, the traveling body 135b is moved forward with the hook 135c lying down, and is kept in this position until the next jig replacement.
[0037]
In the above embodiment, the stock frames 132 are provided on the two surfaces around the rotating body 131. However, the rotating body 131 is formed in a prismatic shape having a triangular or quadrangular cross section, and three or more stocks are provided on the peripheral surface of the rotating body 131. It is also possible to provide a frame 132.
[0038]
In the above embodiment, the welding robot 12 for welding the upper part of the vehicle body is mounted on the upper frame 70 of the gantry 7. However, a fixed frame is disposed above each of the left and right sides of the vehicle body assembly station ST2, and this fixing is performed. A plurality of welding robots may be suspended from the frame, and the upper part of the vehicle body may be welded by these welding robots.
[0039]
【The invention's effect】
As is apparent from the above description, according to the present invention, welding work at the vehicle body assembly station can be started without waiting for the return of the set carriage to the set station, and the cycle time can be shortened to improve productivity. .
[Brief description of the drawings]
FIG. 1 is a plan view of an example of a vehicle body assembly apparatus to which the present invention is applied.
FIG. 2 is a side view of the vehicle body assembling apparatus viewed from the direction of arrow II in FIG.
3 is a front view of the set station as seen from line III-III in FIG.
4A is a side view showing a state when a rear tray is set by the second set robot, and FIG. 4B is a side view showing a state when the roof is set by the second set robot.
FIG. 5 is a front view of the vehicle assembly station as seen from the line VV in FIG.
FIG. 6 is a perspective view of a set cart.
FIG. 7 is a front view of a side sill receiving member viewed from the line VII-VII in FIG.
8 is a front view of the first side panel pressing member as seen from the line VIII-VIII in FIG. 6;
FIG. 9 is a left side view of FIG.
10 is a front view of the second side panel pressing member as seen from the line XX in FIG. 6;
FIG. 11 is a plan view of a second side panel pressing member.
FIG. 12 is a side view of the upper part of the gantry viewed from the inside in the horizontal direction.
13 is a cross-sectional plan view taken along line XIII-XIII in FIG.
14 is an enlarged cross-sectional view taken along line XIV-XIV in FIG.
FIG. 15 is a side view of the jig changing device viewed from the inside in the lateral direction.
16 is a cross-sectional view taken along line XVI-XVI in FIG.
FIG. 17 is a perspective view showing a vehicle body constituting member.
[Explanation of symbols]
W1 floor W5 side panel
ST1 Set station ST2 Body assembly station
2 set trolley
20 ₁ ~ 20 _Four Floor support
21 ₁ , 21 ₂ Side sill receiving member
22 ₁ , 22 ₂ Side panel pressing member
11 Welding robot

Claims (1)

A set carriage that can reciprocate between the set station and the vehicle body assembly station, and a jig that is mounted on a pedestal arranged on each of the left and right outer portions of the vehicle body assembly station in an inward posture facing inward in the lateral direction,
A floor support member that positions and supports the floor of the vehicle body on the set carriage, a side sill receiving member that receives a side sill portion that is a joint between the floor and the left and right side panels of the vehicle body, and both side panels on the floor A side panel pressing member that is pressed from the outside in the lateral direction is provided.
The floor and both side panels are set on the set carriage at the set station and transported to the car body assembly station. At the car body assembly station, each side panel on the set truck is received in a state of being combined with the floor by each jig. A vehicle body assembly apparatus for assembling an automobile body by welding and joining each side panel to a floor in a state,
In each of the left and right sides of the body assembly station, a plurality of welding robots that are positioned below the respective jigs and welded to each floor to the floor are arranged.
The set carriage is provided with a receiving member for side sill and a pressing member for side panel so as to be retractable to a retracted position that does not interfere with the welding robot during welding work.
The vehicle body assembly apparatus characterized by the above-mentioned.

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