JPH0370592B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a processing line for performing processing such as welding on side panels for automobiles.

(Prior Art) Conventionally, in this type of processing line, a reciprocating setting truck is provided between a setting station and a welding station in front of the setting station, and a setting jig on the truck is provided with a plurality of side panels forming side panels at the setting station. It is known that the side panels are set in a welding station and then welded to form an integrated side panel. Generally, welding is performed by welding robots placed on both sides of the weld.

Conventionally, a sealing station is placed in front of the welding station, and a receiving jig for receiving the welded side panel in a horizontal position is mounted on a reciprocating delivery cart between the two stations. There is also known a device in which a sealant is applied to the side panel by a sealant application robot placed on both sides.

(Problems to be Solved by the Invention) In the above-mentioned device, in order to set the side panel on the setting jig in a horizontal position, the setting work must be carried out by leaning over the setting jig at the setting station. In addition, since welding and coating robots are placed on both sides of the welding station and sealing station, sandwiching the track of the truck, the width of these stations becomes wider, increasing the line space. There is.

(Means for Solving the Problems) The present invention facilitates the work of setting a side panel onto a setting jig, allows welding work and sealing work to be performed efficiently, and further improves the width of the welding station. The purpose is to provide a space-efficient processing line in which the sealing station can fit within the width of the welding station and the setting station, the welding station in front of it, and the welding station In an automotive side panel processing line equipped with a sealing station in front of A side panel holder and a welding robot are arranged in the welding station on one side in the lateral direction of the track of the setting truck, and the side panel on the setting jig is disposed in the welding station so as to be movable back and forth. The welding station can be freely delivered to the holder in an upright position, and the welding station is reciprocated between the welding station and the sealing station along a stand that is laterally offset to one side with respect to the track of the setting cart. A dolly is provided, a dispensing jig is mounted on the dispensing dolly for receiving the side panel welded by the volumetric robot in an upright position from the holder, and the sealing station is mounted on both sides of the dispensing dolly in the lateral direction, sandwiching the drive of the dispensing dolly. A sealing agent application robot and a sealing jig for holding the side panel are installed in opposition to each other, and the side panel on the dispensing jig can be freely delivered to the sealing jig in an upright position at the sealing station. shall be.

(Function) At the setting station, the components of the side panel are set in an upright position from one side in the lateral direction on the setting jig, then the setting cart is moved forward to the welding station, and these components are temporarily attached using a welding robot as appropriate. After that, the welding robot performs additional stroke welding to form an integral side panel, and during this welding operation, the setting cart is moved back to the setting station to set the next side panel.

Here, the work of setting the side panel is done because it can be set on the setting jig in this standing position.
This can be done without forcing the worker into an unreasonable posture.

In addition, unlike the conventional method in which the side panel is placed in a horizontal position into the welding station, the holder and welding robot can be centrally arranged on one side of the welding station in the lateral direction opposite to the setting jig. The width is narrowed, and setting work at the setting station can be performed simultaneously during welding work, improving work efficiency.

In addition, the welded side panels are taken from the holder and received in an upright position by a payout jig on a payout cart, and transported to a sealing station by the forward movement of the payout cart, and then delivered to a sealing jig in an upright position. Then, a sealant is applied by a coating robot.

Then, by delivering the side panel to the sealing jig, the unloading cart is returned to the welding station to wait during the sealing work, and after the work at the welding station and the sealing station is completed, the welded side panel is immediately removed. It becomes possible to transport it to the sealing station, improving work efficiency.

Here, in the sealing station, for example, a coating robot is disposed on one side in the lateral direction sandwiching the track of the delivery cart, and a sealing jig is arranged on the other side, so that the track of the cart and the track of the setting cart are arranged. If they match, even if the welding equipment including the welding robot is concentrated on one side of the track in the horizontal direction, the sealing jig at the sealing station will overhang to the other side of the track in the horizontal direction, causing the entire line to be stretched horizontally. Although the width becomes wider, in the present invention, the track of the unloading cart is laterally offset to one side from the track of the setting cart, so the sealing jig can be placed in the space of the extension of the track of the setting cart. , the width of the entire line can be narrowed to improve space efficiency.

(Example) Referring to FIG. 1, L indicates the processing line of the side panel W, and the lines L are arranged side by side in a pair on the left and right, and the side panels W on the left and right sides are processed by each line L. I decided to do it.

As shown in FIGS. 2 and 3, each line L includes a set station 1, a welding station 2, and a sealing station 3 in order from the rear to the front.
and the welding station 2 along the rails 4a, 4a on the first track 4 between the welding station 1,
A set trolley 5 that reciprocates between the two is provided, and the side panel W (more precisely, the outer panel and various inner members constituting the side panel W) is mounted on the set trolley 5 in an upright position, as shown in FIG. A setting jig 6 that can be set freely from the outside in the horizontal direction with one side in the horizontal direction, for example, the side of the gap between the processing lines L and L being arranged side by side, as the inside.
is mounted on the welding station 2, and a holder 7 for the side panel W and welding robots 8, 8' are placed on the outside of the first track 4 in the lateral direction. The side panel W on the tool 6 can be freely delivered to the holder 7 in an upright position. To explain this in more detail, a machine frame 9 is erected on the outer side of the first track 4 of the welding station 2 in the lateral direction, and side panels W are installed vertically on the inner side of the outer machine frame 9 as appropriate. In addition to attaching a plurality of clamper-type holders 7 to be held at multiple locations, a pair of hanging welding robots 8 and 8 are installed on the ceiling of the machine frame 9, and a pair of floor-standing welding robots 8 and 8 are installed below the welding robots. The robots 8' and 8' are arranged, and the setting jig 6 is supported by the setting cart 5 via an X-link mechanism 6a so that it can move back and forth in the lateral direction, and the setting cart 5 is moved back and forth to the welding station 2. After that, the setting jig 6 is moved laterally outward by the X-link mechanism 6a as shown in FIG. 6, and the side panel W is held by the holder 7. ' to temporarily attach the outer panel and the inner member, then open the clamper 6b provided in the setting jig 6, move the setting jig 6 laterally inward, and attach it to the holder 7 of the side panel W. After the delivery, the setting table 5 is moved back to the setting station 1, and the side panel W held by the holder 7 is transferred to each welding robot 8,
8' allows for additional stroke welding.

The hanging type welding robot 8 has a robot body 8b that is supported in a horizontally movable manner on a frame 8a that is installed on the ceiling of the machine frame 9 and is movable back and forth. The welding gun 8e is attached to the wrist 8d at the lower end of the arm 8c, and the floor-standing welding robot 8' has a robot body 8'b that can be moved laterally on a slide table 8'a that can move forward and backward. A welding gun 8'e is attached to the tip of a swingable robot arm 8'c extending from the main body 8'b via a wrist portion 8'd.

In the drawing, reference numeral 5a indicates a conveyance motor for the set trolley 5. A pinion 5b on the output shaft of the motor 5a is engaged with a rack 5c fixed to the trolley 5, and the motor 5a is rotated in forward and reverse directions to move the trolley 5 to the set station. The welding station 1 and the welding station 2 are moved back and forth.

Further, in the drawing, reference numeral 10 indicates a reciprocating payout cart between the welding station 2 and the sealing station 3 in front of the welding station 2, and the welded side panel W is attached to the payout cart 10 from the holder 7 in an upright position. It is equipped with a receiving payout jig 11.

Here, the delivery cart 10 is supported by rails 12a, 12a on a second track 12 offset laterally outward with respect to the first track 4, and is connected to the setting cart 5 via a connecting frame 13. As the setting cart 5 reciprocates, it is reciprocated between the welding station 2 and the sealing station 3 along the second track 12. Note that the laterally outer rail 4a of the first track 4 and the laterally outer rail 12a of the second track 12 are constituted by a common rail. The sealing station 3 includes a coating robot 14 having a sealant coating nozzle 14a attached to the outer side of the second track 12 in the lateral direction, and a sealing jig 15 that holds the side panel W on the inner side of the second track 12 in the lateral direction. A side panel W on the dispensing jig 11 is provided oppositely to the dispensing jig 11.
can be freely delivered to the sealing jig 15 in an upright position. To explain this in more detail, a guide frame 10a is vertically disposed on the outer side of the dispensing cart 10 in the lateral direction, and a support frame 11a is attached to the guide frame 10a to support the dispensing jig 11 so as to be movable laterally. The payout jig 11 is supported so as to be able to move up and down, so that the payout jig 11 can be moved laterally and moved up and down by the movement of the support frame 11a, and after the payout cart 10 returns to the welding station 2, The dispensing jig 11 is advanced laterally outward as shown in FIG. is opened and the jig 11 is moved laterally inward to allow the jig 11 to receive the side panel W, and after the dispensing cart 10 is moved toward the sealing station 3, the jig 11 is moved laterally inward. Ingredients 1
1 laterally inward and raised,
In this raised position, as shown in FIG. 7, the side panel W is held by a holding member 15a such as a clamper or a workpiece holder provided in the sealing jig 15, and then, after releasing the clamper 11b of the jig 11, the jig 11 is The side panel W is moved laterally outward and lowered to attach the side panel W to the sealing jig 15.
The delivery will take place.

The sealing jig 15 is pivotably mounted on a slide base 15c provided on a machine base 15b so as to be movable in the horizontal direction, and can be reversed between a horizontal position and an upward position by means of a cylinder 15d around an axis 15e. The jig 15 is moved back and forth and reversed in synchronization with the application robot 14 to apply the sealant to the side panel.

Here, the dispensing jig 11 is for holding the welded side panel W, and is smaller than the setting jig 6, which needs to position and hold the outer panel and various inner members before welding. Therefore, the second track 12 can be formed narrower by downsizing the delivery cart 10, and even if the second track 12 is offset laterally outward from the first track 4, the width of the processing line L can be increased by this. is small, and rather, this offset makes it possible to fit the sealing jig 15 placed laterally inside the second track 12 of the sealing station 3 into the extended space of the first track 4. The effect of shortening the width is greater, and the overall width of the processing line L can be shortened as much as possible.

Next, to explain the overall operation of the above embodiment, first, at the setting station 1, the side panel W is set on the setting jig 6 on the setting trolley 5, and at the same time, at the welding station, the side panel W is set on the setting jig 6 on the dispensing trolley 10. 11 receives the welded side panel W, and then moves the setting cart 5 to the welding station 2 and the unloading cart 10 to the sealing station 3. and,
At the welding station 2, the side panel W on the setting jig 6 is tack welded and delivered to the holder 7 provided in the station 2,
In addition to performing additional welding on the side panel W, the side panel W on the payout jig 11 is delivered to the sealing jig 15 at the sealing station 3, and a sealant is applied to the side panel W. Meanwhile, after the delivery, the setting cart 5 is moved. Set station 1
Then, the payout cart 10 is moved back to the welding station 2, and the next side panel W is set on the setting jig 6. By repeating the above operation, the side panel W is set.
Welding work and sealing work are performed continuously.

The above-mentioned gap between the left and right processing lines L and L serves as a work space for exchanging jigs when changing models.
The setting jig 6, the dispensing jig 11, and the sealing jig 15 are better placed on the outside in the lateral direction, and the setting cart 5 and the dispensing cart 10 are reciprocated inside, and the sealing jig 15 is disposed on the inner side in the lateral direction. This is advantageous because the jig 15 can be replaced easily.

(Effects of the Invention) As described above, according to the present invention, the side panel can be set on the setting jig in an upright position, making the setting work easier, and the welding equipment consisting of the holder and welding robot can be placed next to the welding station. It is now possible to centrally arrange them on one side in a direction, which shortens the width of the welding station, and also allows the setting cart to be moved back to the setting station during welding work to set the next side panel. This reduces time loss due to setting work.
Furthermore, the welded side panels are transported from the welding station to the sealing station in front of the welding station by a payout jig on the payout cart, and then delivered to the sealing jig. Let's move back,
It is possible to prepare for transporting the next side panel, improving work efficiency, and due to the offset arrangement of the track of the unloading trolley, the extended part of the track for the setting trolley can be used as a space for arranging a sealing jig or coating robot. It has the effect of shortening the width of the entire processing line as much as possible.

[Brief explanation of drawings]

Fig. 1 is a plan view of the entire line in which a pair of processing lines of the present invention are installed side by side, Fig. 2 is a plan view of one side of the processing line, and Fig. 3 is a plan view of the processing line as seen from the - line in Fig. 2. 4 is a front view of the setting station when the side panel is set as seen from the - line in Fig. 3, and Fig. 5 is a front view of the side panel when it is delivered to the receiving jig as seen from the - line in Fig. 3. 6 is a front view of the welding station when the side panel is delivered to the holder, and FIG. 7 is a front view of the welding station when the side panel is delivered to the sealing jig as seen from the - line in FIG. 3. FIG. 3 is a front view of the ceiling station. W... Side panel, 1... Setting station, 2... Welding station, 3... Sealing station, 4... First track (track of the setting truck), 5... Setting truck, 6... Setting jig, 7
...Holder, 8... Welding robot, 10... Payout cart, 11... Payout jig, 12... Second track (track of payout cart), 14... Application robot, 1
5...Sealing jig.

Claims (1)

[Claims] 1. In a processing line for automobile side panels, which is equipped with a setting station, a welding station in front of the setting station, and a sealing station in front of the welding station, a setting jig that can freely set the side panel from one side in the lateral direction in an upright position is installed. A setting truck is provided reciprocally between the setting station and the welding station, and a side panel holder and a welding robot are arranged at the welding station on one side in the lateral direction of the track of the setting truck. In the welding station, the side panel on the setting jig can be freely delivered to the holder in an upright position, and the welding station and the side panel can be delivered to the holder in an upright position, and the welding station and the side panel can be delivered to the holder in an upright position. A dispensing cart that reciprocates between the sealing station, a dispensing jig for receiving the side panel welded by the receptacle robot in an upright position from the holder, and a dispensing jig mounted on the dispensing cart in an upright position. A sealing agent application robot and a sealing jig for holding the side panel are installed oppositely on both sides in the lateral direction, sandwiching the track of the dispensing cart, and the side panel on the dispensing jig is held in an upright position at the sealing station. A processing line for automobile side panels, characterized in that the processing line can be freely delivered to the sealing jig.