JPH04193433A - Assembling device for automobile floor - Google Patents

Abstract

PURPOSE:To improve accuracy of floor assembling by positioning three members a front component, a front floor, and a rear floor loaded on respective transfer means against the set jig on a station so as to be on prescribed positions, and joining them by welding with a welding robot. CONSTITUTION:A front floor W2 and a rear floor W3 worked on a work line at the second story part are supplied over the welding robot 3 of a joining station 1 by a transport means in the condition separated each other, and received with transfer jigs 5e, 6e of transfer means 5, 6 and shifted to the upside position of the joining station. At the same time, a front component W1 is by a transfer means 4 in rear of the set jig 2 of the joining station 1, the rear floor W3 is by a transfer means 6 in front of it, and the front floor W2 is by a transfer means 5 in the middle part of it, respectively loaded. The three members are accurately positioned in a prescribed position relation with the positioning member 2a on the set jig 2, mutually joined by welding in this condition with the welding robot 3, and a floor W is assembled.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention combines three members: a front component that constitutes an engine room, a front floor that constitutes the floor surface of a passenger compartment, and a rear floor that constitutes a trunk room. The present invention relates to a device for assembling an automobile floor.

(Prior art) Conventionally, in this type of floor assembly equipment,
As seen in Publication No. 28742, a set station for carrying in the three members of the front component, the front floor, and the rear floor, and a joining station where welding means are provided are separately provided, and the three members are set in the required positional relationship at the set station. The three members are transferred by a transfer means to a joining station, where the three members are welded and joined to assemble the floor, and then the floor is reprinted.

(Problem to be Solved by the Invention) In the above-mentioned conventional device, when the three members are transferred between the transfer means and the jig on each station in the transfer process from the set station to the joining station, the positional deviation of the three members occurs. This can easily lead to errors in floor assembly accuracy, and the difference between the set station and the joining station
There is a problem that the line length becomes longer due to the provision of two stations.

In view of the above points, an object of the present invention is to provide a floor assembly device that can set and weld three members at the same station.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an apparatus for assembling an automobile floor by combining three members: a front component, a front floor, and a rear floor. A setting jig for positioning and supporting these three members in the required positional relationship was placed at the station where the three members were introduced by means, and welding robots were placed on both sides of the station for welding and joining the three members on the setting jig. .

(Function) The three members of the front component, the front floor, and the rear floor are placed on a setting jig on the station by each transfer means, and the three members are aligned and supported by the jig in the required positional relationship, In this state, the three members are welded together by a welding robot. In this way, since the three members set in the set jig in the required positional relationship can be combined as they are, errors in assembly accuracy of the floor can be reduced as much as possible.

By the way, assuming that the direction in which the floor is delivered from the station is the front, the member that is connected to the rear part of the front floor among the front component and the rear floor is referred to as the rear member (front component in the embodiment), and the member that is connected to the front part of the front floor. When is the front member (the rear floor in the example), the rear member can be transferred from the rear position of the station to the setting jig on the station, but the front floor and front member can be transferred from the side of the station to the setting jig. It is necessary to avoid interference with the welding robot placed on the side of the station.

In this case, each conveyance means for the front floor and the front member for conveying the front floor and the front member is provided at a supply position above the arrangement part of the welding robot on one side of the station,
The transfer means for the front floor and front parts are mounted on a lift frame that is movable up and down on a support frame that stands above the welding robot placement area on the other side of the station, and on one side of the station and on the other side. If a shiftable movable frame is attached and a transfer jig for holding each member is suspended from the movable frame so as to be movable back and forth, the elevating frame of each transfer means can be raised. Shifting the movable frame to one side and having the transfer jig of each transfer means receive each member transported to the supply position,
Next, the movable frame is returned to the station side, each member is shifted to the upper position of the station, and in this state, the lifting frame is lowered and the transfer jig is moved back and forth to transfer each member to the welding robots on both sides of the station. It can be placed in the required positional relationship on the separation jig without causing any interference.

Moreover, according to this configuration, the space for arranging the transfer means can be accommodated within the width of the station including the arranging section of the welding robot, and space efficiency can be improved.

In addition, a second floor section is provided above the first floor section where the station is located, and each processing line for the front floor and rear parts is arranged on the second floor section, and each component processed on the separate line is By configuring the supply position above the welding robot placement area on one side of the station so that it is lowered from the second floor by each transport means, the most rational distribution system from the processing line to the floor assembly station can be constructed. , Space efficiency can be greatly improved by utilizing three-dimensional space.

By the way, in order to cope with the model change, it is necessary to replace the center and back jigs, but welding robots are placed on both sides of the station, and a transfer device is installed in front to transport the floor to the lighting line. It is difficult to pull out the setting jig to the side or front of the station and replace it. Therefore, it is desirable to arrange an exchange station between the station and the rear member supply position behind the station, where the setting jig can be pulled out from the station and replaced. In this case, the rear member transfer means is mounted on a traveling frame that reciprocates between the supply position and the station along a guide line installed in the space above the exchange station, and the transfer means holds the rear member. The jig is suspended so that it can be raised and lowered, and the space above the exchange station is used as a conveyance path so that the rear member can be transferred to the separator jig.

(Embodiment) Referring to FIGS. 1 and 2, (1) shows a joining station for joining three members, a front component W1, a front floor W2, and a rear floor W3, which constitute a floor W of an automobile; A setting jig (2) for positioning and supporting these three members in the required positional relationship is placed at (1), and two welding robots (3), front and rear, are placed on both sides of the station (1). ), and separate means for transferring each component (4) (5) (6)
are placed on the setting jig (2), and with these members positioned and supported in the required positional relationship by the setting jig (2), the front floor W2 and its rear (with respect to the conveying direction of the floor) are ) are welded together by the rear welding robot (3), and the front floor W2 and the rear floor W3 in front of it are welded together by the front welding robot (3), thereby creating the assembled floor. Transfer device (8) to multiple lighting stations (7) (only one lighting station is shown in the drawing) in front of combining station (1)
) to each of the multiple lighting stations (7)
Multiple welding robots (9) placed on both sides of the floor W were used to perform additional welding on the floor W. Set jig (2
> has the above three members W, , W2 . on both sides of its upper surface. It is equipped with a plurality of positioning members (2a) for positioning and supporting W, and further includes a jig exchange station (lO) behind the joining station (1), and between the two stations (1) and (10). A rail (11) is laid on the rail, and the center jig (2) is supported on the rail to connect the joining station (
1) to the exchange station (10),
The setting jig (2) can now be replaced. The setting jig (2) is always set at the joining station by the positioning cylinder (2b) shown in Figures 3 and 4.
(1) Restricted to a fixed position above.

The front component W1 is transported from a rear processing line (not shown) to an exchange station (
It is transported to the supply position adjacent to the rear of the IO), and then transported forward through the upper space of the exchange station (10) by the transfer means (4) and placed on the setting jig (2). To explain this in detail, the conveying means (12) conveys the front component W1 placed on the pallet P to the supply position at the front end, and the empty pallet/soto P is carried by the lift-down device (12a) at the front end. The pallet P is lowered and returned to the rear, the lift-up device (12b) at the rear end is used to raise the pallet P, and the front component W1 discharged from the processing line is placed thereon and transported to the supply position, which are repeated. The transfer means (4) is a traveling frame that is reciprocated between the supply position and the combining station (1) along a guide frame (13) installed in the space above the exchange station (10). In (4a), a transfer jig (
4b) is suspended vertically via a longitudinal column (4C) so that it can be raised and lowered, and the moving frame (4a) is returned to the supply position to lower the transfer jig (4b). The front component W supplied by the transport means (12) is received by the transfer jig (4bB), and then the transfer jig (4b) is raised and the traveling frame (4a) is moved to the coupling station (1). After moving forward, the jig (4b) was lowered and the rear part of the center jig (2) was moved so that the front component W1 was placed thereon.

The transfer means (5) and (6) for the front floor W2 and the rear floor W3 are 2 as shown in FIGS. 3 and 4.
The front floor is transported by transport means (15) and (16), which will be described in detail later, from the floor area 14) to two supply positions in the front and back above the arrangement part of the welding robot (3) on the negative side of the joining station (1). It is configured to place W2 and rear floor W3 on a setting jig (2), and a support frame ( The transfer means (5) and (6) were provided on each of the front and rear sides of the container (17) so as to be movable up and down.

The transfer means (6) for the rear floor W is shown in Figures 5 and 6.
As shown in the figure, a horizontally long arm (6b) is attached to a lifting frame (6a) that is movable up and down on the front side of the support frame (17).
A movable frame (6C) that can be freely shifted is installed on the coupling station (1) and on one side of the coupling station (1) via the movable frame (6C).
) A longitudinal support frame (6d) is attached to the lower surface of the rear floor W3 so as to be movable back and forth, and a transfer jig (6e) including a plurality of gripping tools for gripping the rear floor W3 is suspended from the support frame (6d). It consists of a motor (6a) equipped with a lifting frame (6a).
6r) through a rack and pinion mechanism consisting of a pinion (not shown) interlocked with this and a rack (6g) fixed to the support frame (17), and at the raised position, the cylinder on the elevator frame (6a) (6h) shifts the movable frame (6C) to one side, causes the transfer jig (6e) to receive the rear floor W3 transported by the transport means (16) to the supply position above the - side, and then The movable frame (6C) is returned to the position facing above the coupling station (1), and the support frame (6d) is connected to the pinion (6j) and the support frame (6d) which are interlocked with this by the motor (6I) on the movable frame (6C). ) and the rack (6k) on the rear floor W.

was adjusted so that its rear edge overlapped with the front edge of the front floor W2, and in this state, the elevating frame (6a) was lowered to place the rear floor W3 on the setting jig (2). In the diagram (6g) is a chain (6m) attached to the lifting frame (6a).
It is a balance cylinder connected via.

The configuration of the transfer means (5) for the front floor W2 is also almost the same as the above transfer means (6), and the corresponding structural members are designated with the same alphabetic code 5 as the code 6. The explanation will be omitted.

In the second floor part (14), as schematically shown in Fig. 7,
A machining line (18) for the front floor W2 and a machining line (19) for the rear floor W3 are provided.
Front floor W2 formed with an opening (14a) on the floor surface of 14> and processed on each processing line (1g) (19)
and rear floor W, each member is transferred to each conveying means (15).
(16) through the opening (14a) to the respective supply positions above the negative side of the binding station (1).

Each of the conveyance means (15) (1B) has a pair of stacked stockers (20) vertically installed in the front and back of the opening (14a), and a position directly below each stocker (20) and each supply position. Each drop lifter (21) is raised and lowered in between, and each member processed in each processing line (18) (19) W2゜W3
Each loader device (22
), each stocker (20) lowers each member W 2 , W 3 to one stage, and the lowermost member is lowered to each supply position by each drop lifter (21), and each member is placed as described above. Transfer means (5) (6).

Each stocker (20) is connected to a beam frame (2) installed across the opening (14a) as shown in FIGS.
0a), a pair of left and right vertical frames (
20b) (20b), and attach a pair of fixing bars <20d) (20d) with hooks (20c) for receiving members in multiple stages above and below each vertical frame (20b), and A pair of guide bars fixed to the frame (20b) <2
0e) (20e) hook to receive the member (2Or)
A pair of U-shaped movable bars (20
g) (20g) is supported so that it can be raised and lowered freely, and furthermore, both vertical frames (20g) are supported.
0b) Between the upper ends of (20b), a speed reducer (
A chain-driven transmission shaft (20j)
), and a rotating shaft (20k) connected to each vertical frame (20b) via a bevel gear to each end of the transmission shaft (20j)
A pair of sprockets (20g) (2ON) are fixed to the rotating shaft (20k), and one end is attached to each sprocket (2011) with one end attached to the movable bar (20g) (2ON).
A crossbar (20m) installed horizontally between 20g) and a chain connected to a balance weight (2On) at the other end.
20o), and a total of four movable bars (20g), one pair each on the left and right, are raised and lowered synchronously by the forward and reverse rotation of the motor (20h).
) (2Of) can be freely swung inward and outward, and a movable bar (20g) (7) Lifting and lowering position tL rough ')
(20c) (2Or) (7) The member is lowered by one stage by swinging, so that the member can be stocked in multiple stages in the stocker (20).

As shown in FIGS. 1, 3, and 4, each of the drop lifters (21) is movable up and down on each support column (21a) that is erected in pairs on the negative side of the coupling station (1). The upper end of each pillar (21a) has a motor (
21b) and a sprocket (21d) on a rotating shaft (21c) that is chain-driven by the motor (21b), and the sprocket (21d) is connected to a drop lifter (21) at one end and a support column (21a) at the other end. A chain (21e) connected to a balance weight (not shown) housed in the interior so that it can be raised and lowered is hung, and thus the motor (21b)
The drop lifter (21) can be moved up and down by forward and reverse rotation of the movable bar (2) of each stocker (20).
0g>, each drop lifter in the raised position (
21) It was placed on the upper jig (21f).

As shown in FIGS. 3 and 4, each of the loader devices (22) has an upper guide frame (2) that straddles the opening (14a).
2a), a jig (22c) for gripping a member is suspended from a cylinder (22d) so that it can be raised and lowered, and the traveling frame (22b) is moved laterally. By lowering the jig (22e), the dispensing device (18a) connected to each processing line (18) (19) is
) (19a) The jig (22c) receives each member on the top, and then the jig (22c) is raised to remove the traveling frame (22b).
) to a position above each stocker (20), the jig (22c) is lowered and each member is moved to a position above each stocker (20).
) is now placed at the top of the page.

According to this implementation, the front floor W2 processed by each processing line (18) (19) of the second floor part (14)
and the rear floor W3 is connected to the welding robot (3) on one side of the coupling station (1) through the loader device (22), stocker (20) and drop lifter (21) of each transport means (15) (16). Then, the transfer jigs (5e) (6e) of each transfer means (5) (6) receive the front floor W2 and the rear floor W3 and move them to the joining station (1). At the same time, the front component W1 is transported to the upper position of the coupling station (1) by the transfer means (4), and then the transfer jig (4b) of the transfer means (4) is lowered. Bonding station (1) Upper setting jig (2)
) The front component W is placed at the rear of the
At the same time, the elevating frame (6a) of the transfer means (6) is lowered, and the movement of the support frame (6d) moves the transfer jig (6e) backwards, and the front part of the setting jig (2) is placed on the rear floor W3. is placed, and then the lifting frame (5a) of the transfer means (5) is lowered and the transfer jig (5e) is moved rearward by the movement of the support frame (5d), so that it is placed on the front floor W2. The front and rear edges are respectively the front component W1 and the rear floor W3.
Front floor W2 in a positional relationship that overlaps the edge of
is placed in the middle part of the setting jig (2). Thereafter, the three members of the front component W, front floor W2, and rear floor W are accurately positioned in a predetermined positional relationship by the positioning member (2a) on the setting jig (2), and in this state, the welding robot (3) The three members are welded together and the floor W is assembled.

(Effects of the Invention) As is clear from the above description, according to the invention of claim 1, the three members, the front component, the front floor, and the rear floor, which are placed on the setting jig on the station by the respective transfer means, are placed on the setting jig on the station. Because the setting jig allows the three members to be connected as they are after they have been positioned in the desired positional relationship, the assembly accuracy of the floor is improved. Since only one is required, the line length can be reduced.

Furthermore, according to the invention of claim 2, the three members can be accurately placed on the setting jig on the station by each transfer means without causing interference with other members such as a welding robot, and the invention as claimed in claim According to the invention of claim 3, the arrangement space for the front floor and front member transfer means can be accommodated within the width of the station including the welding robot arrangement section, and space efficiency is improved. According to the fourth aspect of the present invention, there is an effect that each processing line for the front floor and front member and the distribution system from there to the station can be constructed in a rational and space-efficient manner by utilizing the three-dimensional space.

Further, according to the invention of claim 5, there is an effect that the setting jig can be replaced by utilizing the arrangement space of the transfer means for the rear member.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an example of the device of the present invention, FIG. 2 is a side view taken along the line ■-■ in FIG. 1, and FIGS. 3 and 4 are respectively
■Cross-sectional view along line and IV-IV line Figure 5 is an enlarged side view of the transfer means for the front floor and rear floor, and Figure 6 is the front view of the transfer means for the rear floor as seen from the right side of Figure 5. figure,
Figure 7 is a schematic plan view of the second floor, Figure 8 is an enlarged plan view of the main parts of the second floor, and Figures 9 and 10 are I of Figure 8.
They are X-■ line and X-X line cross-sectional views. Wl...Front component W2...Front floor W3...Rear floor (1)...Joining station (2)...Set jig (4)...Transfer for front component (rear member) Means (4a)...Traveling frame (4b)...Transfer jig (5)...Transfer means for front floor (6)...Transfer means for rear floor (front member) (5a) (6a)
... Elevating frame (5c) (Be) ... Movable frame (5e) (Be) ... Transfer jig (10) ... Exchange station (12) ... Front component transport means ( 1
3)...Guide frame (14)...Second floor portion (15)...Front floor conveyance means (16)...
・Transportation means for rear floor (17)... Support frame patent applicant Honda Motor Co., Ltd. Figure 9

Claims (1)

[Claims] 1. In an apparatus for assembling an automobile floor by combining three members: a front component, a front floor, and a rear floor, these three members are required at a station where each of these members is loaded by each transfer means. 1. A floor assembly apparatus for an automobile, characterized in that a setting jig is disposed for positioning and supporting the set jig in the following positional relationship, and welding robots for welding together three members on the set jig are disposed on both sides of the station. 2. With the direction in which the floor is delivered from the station as the front, a member of the front component and the rear floor that is connected to the rear part of the front floor is a rear member;
A member connected to the front part of the front floor is a front member, a rear member conveying means for conveying the rear member to a supply position at the rear of the station, and a portion above the welding robot placement part on one side of the station. A front floor and transport means for the front floor and a front member for transporting the front member are provided at the supply position, and the rear member transfer means forwards the rear member transported to the rear supply position. configured to be transported and placed on the setting jig,
Each of the front floor and front member transfer means shifts each member transported to the upper supply position to the upper position of the station and then lowers the member to adjust the position on the setting jig in the front-rear direction. 2. The automobile floor assembly apparatus according to claim 1, wherein the automobile floor assembly apparatus is configured to be placed on the floor. 3. Each of the transfer means for the front floor and the front member is mounted on a lifting frame that is movable up and down on a support frame that stands above the placement area of the welding robot on the other side of the station,
According to claim 2, a movable frame that can be freely shifted is mounted on the station and one side thereof, and a transfer jig for holding each member is suspended from the movable frame so as to be movable back and forth. The automotive floor assembly equipment described. 4. A second floor section is provided above the first floor section where the station is arranged, and each processing line for the front floor and rear parts is arranged on the second floor section, and each processing line for the front floor and front parts is installed. 4. The automobile floor assembly apparatus according to claim 2, wherein the means is configured to lower each member processed in each of the processing lines from a second floor portion to the upper supply position. 5. An exchange station is disposed between the station and the rear member supply position behind the station, and the exchange station allows the setting jig to be pulled out from the station and replaced, and the rear member transfer means is placed between the rear member supply position and the rear member supply position. A transfer jig for holding the rear member is suspended from a traveling frame that reciprocates between the supply position and the station along a guide frame constructed in a space above the exchange station so that it can be raised and lowered. 3. The automobile floor assembly apparatus according to claim 2, further comprising: