JP2520786B2 - Car floor assembly equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention combines three members of a front component constituting an engine room, a front floor constituting a floor of a vehicle compartment, and a rear floor constituting a trunk room. And a device for assembling a car floor.

(Prior Art) Conventionally, in this type of floor assembling apparatus,
As disclosed in Japanese Patent Publication No. 28742, a set station for loading three components of a front component, a front floor, and a rear floor, and a joining station in which welding means are arranged are separately provided, and the set station is set to a required positional relationship. Further, the three members are transferred to a joining station by a transfer means, where the three members are welded and joined to assemble the floor, and then the floor is additionally struck.

(Problems to be Solved by the Invention) In the above-mentioned conventional apparatus, 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 displacement of the three members is displaced. As a result, there is a problem in that an error is likely to occur in the floor assembling accuracy, and the line length becomes long because of the two stations of the set station and the coupling station.

In view of the above points, an object of the present invention is to provide a floor assembling apparatus capable of performing setting and welding of three members at the same station.

(Means for Solving the Problems) In order to achieve the above object, in the present invention, in an apparatus for assembling an automobile floor by connecting three members of a front component, a front floor, and a rear floor, each of these members is transferred. To the station to put in by means,
A set jig for positioning and supporting these three members in a required positional relationship is arranged, and welding robots for welding and connecting the three members on the set jig are arranged on both sides of the station, and Of the front component and the rear floor, the member coupled to the rear portion of the front floor is the rear member, and the member coupled to the front portion of the front floor is the front member, with the dispensing direction being the front, and the member is rearward to the supply position behind the station. A conveying means for rear members for conveying members is provided, and a second floor portion is provided above the first floor portion where the station is arranged, and each processing line for rear members for the front floor is arranged on the second floor portion. Then, the front floor and the rear member processed in each of the processing lines are connected to the welding robot from the second floor to one side of the station. Each of the front-floor and front-member transfer means that descends to the supply position above the mounting portion is provided, and the rear-member transfer means transfers the rear member transferred to the rear supply position to the front. The transfer means for the front floor and the front member configured to be placed on the setting jig lifts each member conveyed to the upper supply position and shifts it to a position above the station. After that, it is lowered and placed on the set jig with its position adjusted in the front-rear direction (working). The front component, front floor, and rear floor are set on the station by each transfer means. It is placed on a jig, and the jig is supported by aligning the three members in a required positional relationship. In this state, the welding robot joins the three members. In this way, since the three members set in the setting jig in the required positional relationship can be joined as they are, the error in floor assembly accuracy can be reduced as much as possible.

By the way, with the direction of paying out the floor 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 front component in the embodiment), and a member that is connected to the front part of the front floor. Is the front member (rear floor in the embodiment), 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 the front member can be transferred from the side of the station to the setting jig. It must be ensured that it does not interfere with the welding robot located on the side of the station.

In this case, the front floor and front member transporting means for transporting the front floor and the front member are provided at the supply position above the placement portion of the welding robot on one side of the station, and the front floor and the front member are respectively transported. The transfer means is attached to a movable frame that is shiftable on the station and on one side of the elevator frame, which is provided on a support frame that is erected above the placement portion of the welding robot on the other side of the station so as to be vertically movable. If a transfer jig for holding each member is suspended in the movable frame so as to be movable back and forth, the movable frame is shifted to one side while the elevating frame of each transfer means is raised. Then, each member conveyed to the supply position is received by the transfer jig of each transfer means, then the movable frame is returned to the station side and each member is shifted to the position above the station, and in this state, it is moved up and down. Transfer the frame while lowering it Ingredients and by moving back and forth, can be mounted at a predetermined positional relationship to the setting jig without causing interference between both sides of the welding robot of each member station. Further, according to this configuration, the arrangement space of the transfer means can be accommodated within the lateral width of the station including the arrangement portion of the welding robot, and the space efficiency can be improved.

Further, a second floor portion is provided above the first floor portion where the station is arranged, each processing line for the rear member for the front floor is arranged on the second floor portion, and each member processed by each processing line is The most rational logistics system from the processing line to the floor assembly station can be constructed by lowering the second floor from each station to the supply position above the welding robot on one side of the station. The space efficiency can be greatly improved by utilizing the three-dimensional space.

By the way, it is necessary to replace the set jig to deal with the model change, but since welding robots are placed on both sides of the station and a transfer device is installed in the front to transfer the floor to the additional line, the station is It is difficult to pull out the set jig to the side or front and replace it. Therefore, it is desirable to dispose a replacement station between the station and the rear member supply position behind the station so that the setting jig can be pulled out and exchanged. In this case, the transfer means for the rear member is provided on the traveling frame that reciprocates between the supply position and the station along the guide frame that is installed in the space above the replacement station,
The transfer jig for holding the rear member is configured to be hung up and down so that the rear member can be transferred to the set jig by using the space above the exchange station as a transport path.

(Embodiment) With reference to FIGS. 1 and 2, (1) shows a joining station for joining three members of a front component W ₁ , a front floor W ₂ and a rear floor W ₃ which constitute a floor W of an automobile. , A setting jig (2) for positioning and supporting these three members in the station (1) in a required positional relationship
And two welding robots (3) and (3) are arranged on both sides of the station (1), and each member is set by different transfer means (4) 5 (6). It is placed on a jig (2), and while these members are positioned and supported by the set jig (2) in a desired positional relationship, the front floor W ₂ and its rear side (based on the conveyance direction of the floor) The front component W ₁ and the front floor W ₂ are welded together by the rear welding robot (3).
The floor W assembled by welding the front and the rear floor W ₃ in front of it with the welding robot (3) in the front.
Are sequentially transferred by a transfer device (8) to a plurality of hitting stations (7) (only one hitting station is shown in the drawing) in front of the joining station (1), and each hitting station (7) is Floor W is additionally welded by a plurality of welding robots (9) arranged on both sides. Set jig (2) has the above 3 on both sides of the top surface.
Those comprising a member W _1, W _2, W ₃ a plurality of positioning members for supporting and positioning (2a), further binding station (1)
Is provided with a jig exchange station (10), a rail (11) is laid between the stations (1) and (10), and the set jig (2) is supported by the rail to join the station (1). ) To the exchange station (10),
The setting jig (2) was exchanged so that it could be obtained.
The setting jig (2) is always restrained at a fixed position on the joining station (1) by the positioning cylinder (2b) shown in FIGS. 3 and 4.

The front component W ₁ is transferred from the rear processing line (not shown) by the transfer means (12) to the exchange station (1
0) is conveyed to a supply position adjacent to the rear, and is then conveyed forward in the upper space of the exchange station (10) by the transfer means (4) and placed on the setting jig (2). In detail, the carrying means (12) carries the front component W ₁ on the pallet P to the front end supply position and lowers the empty pallet P by the front end lift down device (12a). Then, the pallet P is raised by the rear end lift-up device (12b), the front component W ₁ discharged from the processing line is placed on the pallet P, and the pallet P is conveyed to the supply position. Is
Further, the transfer means (4) is reciprocated between the supply position and the coupling station (1) along a guide frame (13) installed in a space above the exchange station (10).
In (a), a transfer jig (4b) having a plurality of gripping members for gripping the front component W ₁ is vertically hung up and down via a longitudinal column (4c). 4a) is returned to the supply position and the transfer jig (4b) is lowered so that the front component W ₁ supplied by the transfer means (12) is received by the transfer jig (4b). After the transfer jig (4b) is lifted to move the traveling frame (4a) to the joining station (1), the jig (4b) is lowered to the front part of the set jig (2).
W ₁ was placed.

The transfer means (5) (6) for the front floor W ₂ and the rear floor W ₃ are provided on the one side of the joining station (1) from the second floor portion (14) as shown in FIGS. 3 and 4. The front floor W ₂ and the rear floor W ₃ transported by the transporting means (15) (16), which will be described in detail below, are mounted on the setting jig (2) at two supply positions in front of and behind the position where the welding robot (3) is disposed. The transfer means (a) is arranged on each of the front and rear sides of a pillar frame (17) that is erected so as to straddle the arrangement part of the front welding robot (3) on the other side of the joining station (1). 5) (6)
Is provided so that it can be moved up and down.

The transfer means (6) for the rear floor W ₃ is shown in FIGS.
As shown in the figure, on the lifting frame (6a) provided on the front side of the column frame (17) so as to be lifted up and down, on the joining station (1) and one side thereof via the arm (6b) which is long in the lateral direction. the mounting shift freely movable frame to (6c), attaching the longitudinal support frame to (6d) freely move back and forth in the longitudinal direction on the lower surface of the movable Dowaku (6c), gripping the rear floor W ₃ to the support frame (6d) It is constructed by suspending a transfer jig (6e) including a plurality of gripping tools, and a lifting frame (6a) and a pinion (not shown) that is linked to this by a motor (6f) mounted on the frame. The rack (6g) fixed to the support frame (17) raises and lowers it via a rack and pinion mechanism, and the cylinder (6h) on the lifting frame (6a) moves the movable frame (6c) to one side at the raised position. The rear floor W ₃ transferred by the transfer means (16) to the supply position above one side is received by the transfer jig (6e). Then the movable frame (6
c) is returned to the position facing the coupling station (1), and the support frame (6d) is linked to this by the motor (6i) on the movable frame (6c) and on the support frame (6d). It moves to the rear via the rack and pinion mechanism consisting of the rack (6k), and the rear floor W ₃ is at the rear edge of the front floor.
The position was adjusted so as to overlap the front edge of W ₂ , and the elevating frame (6a) was lowered in this state so that the rear floor W ₃ was placed on the setting jig (2). In the figure, (6l) is a balance cylinder connected to the lifting frame (6a) via a chain (6m).

The structure of the transfer means (5) for the front floor W ₂ is almost the same as that of the transfer means (6), and the same reference numeral 6 as the reference numeral 6 is attached to the corresponding component. The description is omitted.

On the second floor (14), as shown schematically in FIG.
A processing line (18) for the front floor W _{2 and} a processing line (19) for the rear floor W ₃ are provided on the floor surface of the second floor portion (14) located above one side of the joining station (1). Forming the opening (14a), each processing line (18) (19)
Each member composed of the front floor W ₂ and the rear floor W ₃ processed by the above is opened by the transfer means (15) (16).
It was carried through a) to one of the above-mentioned feeding positions above one side of the binding station (1).

The transporting means (15) (16) are composed of stacking stockers (20) vertically suspended in a pair in the opening (14a), and positions directly below the stockers (20) and the supply positions. Each drop lifter (21) moved up and down between, and each processing line (18)
Each member W ₂ and W ₃ processed in (19) is stored in each stocker (20).
And each loader device (22) for supplying each of the members W ₂ and W ₃ in the respective stockers (20) are lowered to one stage,
The lowermost member is lowered to each supply position by each drop lifter (21) and delivered to each transfer means (5) (6) as described above.

As shown in FIGS. 8 to 10, each stocker (20) includes a pair of left and right vertical frames that penetrate the opening (14a) in a beam frame (20a) that is installed so as to straddle the opening (14a). (20b) (20
b) is fixed, and a pair of fixed bars (20d) in which hooks (20c) for receiving members are attached to the vertical frames (20b) in a plurality of upper and lower stages
(20d) is attached and fixed to each vertical frame (20b).
A pair of U-shaped movable bars (20g) (20g) in which hooks (20f) for receiving members are attached to the pair of guide bars (20e) (20e) in upper and lower stages so that they can be raised and lowered, Between the upper ends of the frames (20b) (20b), a transmission shaft (20j) that is chain-driven via a speed reducer (20i) by a motor (20h) arranged at the front and rear edges of the opening (14a) is an axis. And a rotary shaft (20k) connected to each end of the transmission shaft (20j) via a bevel gear on each vertical frame (20b).
A pair of sprockets (20l) (20l) is fixedly mounted on 0k), and one end of each of the sprockets (20l) is the movable bar (20g).
A crossbar (20m) horizontally installed between (20g) and a chain (20o) with the other end connected to a balance weight (20n) is hung, and a pair of left and right motors (20h) are used to make a total of four pairs in total. The movable bar (20g) is configured to move up and down synchronously, and the hooks (20c) (20f) can be swung inward and outward to move the movable bar (20g) up and down. By swinging the hooks (20c) (20f), the members are lowered to the first stage so that the members can be stocked in the stocker (20) in multiple stages.

Each of the drop lifters (21) can be moved up and down to a pair of columns (21a) standing up and down in a pair on one side of the joining station (1), as shown in FIGS. 1, 3, and 4. Is supported by a motor (21b) and a rotary shaft (21 driven by a chain by the motor (21b) at the upper end of each of the columns (21a).
c) The upper sprocket (21d) is provided, and one end of the sprocket (21d) is a drop lifter (21) and the other end is a strut (2).
A chain (21e) connected to a balance weight (not shown) housed in 1a) so as to be able to move up and down is hung so that the drop lifter (21) can be moved up and down by forward and reverse rotation of the motor (21b). When the movable bar (20g) of (20) is lowered, the member supported by the hook (20f) at the bottom of the movable bar (20g) is placed on the jig (21f) on each drop lifter (21) in the raised position. .

As shown in FIGS. 3 and 4, each of the loader devices (22) holds a member in a traveling frame (22b) that travels along an upper guide frame (22a) that straddles the opening (14a). Jig (2
2c) is suspended by a cylinder (22d) so that it can be moved up and down. By moving the traveling frame (22b) to the side and lowering the jig (22c), each processing line (18) (19) ) To the jig (22a)
c) and then the jig (22c) is raised to move the traveling frame (22b) to a position above each stocker (20), and then the jig (22c) is lowered to move each member to each stocker (20). 2
It was placed on the top of (0).

Thus, according to the present embodiment, the front floor W ₂ and the rear floor W ₃ processed by the respective processing lines (18) and (19) of the second floor portion (14) have the respective transfer means (15) (16). It is supplied above and below the arrangement part of the welding robot (3) on one side of the joining station (1) via the loader device (22), the stocker (20) and the drop lifter (21),
Next, the transfer jig (5e) (6e) of each transfer means (5) (6)
Receives the front floor W ₂ and the rear floor W ₃ and shifts them to a position above the joining station (1), and at the same time, the front component W ₁ is conveyed to a position above the joining station (1) by the transfer means (4), and then The transfer jig (4b) of the transfer means (4) descends and the front component W ₁ is placed on the rear part of the set jig (2) on the joining station (1), and at the same time, the transfer means (6 lifting frame) (6a) is placed the rear floor W ₃ in front of the movement in the transfer jig support frame (6d) (6e) moves the jig (2) is rearward while lowering, Next, the elevating frame (5a) of the transfer means (5) descends and the transfer frame (5d) moves slightly to the rear to move the transfer jig (5e) slightly to the front and rear edges of the front floor W _2. Front component W ₁ and rear floor respectively
The front floor W ₂ is positioned so that it overlaps the edge of W _3.
Is placed in the middle of the setting jig (2). After that, the positioning member (2a) on the setting jig (2) accurately positions the three members of the front component W ₁ , the front floor W ₂ , and the rear floor W _{3 in} a predetermined positional relationship, and in this state, the welding robot (3 ), The three members are welded to each other and the floor W is assembled.

(Effect of the Invention) As is apparent from the above description, according to the invention of claim 1, the three members of the front component, the front floor, and the rear floor, which are mounted by the respective transfer means, on the set jig on the station are provided. Since the three members can be joined as they are while they are positioned in the required positional relationship by the set jig, the floor assembly accuracy is improved, and one station is different from the conventional one in which two stations for setting and joining are provided. Therefore, there is an effect that the line length can be shortened.

Further, the three members can be accurately mounted on the set jig on the station by the transfer means without causing interference with other members such as the welding robot, and each processing line for the front member for the front floor is also provided. And, there is an effect that a physical distribution system from there to the station can be constructed reasonably and efficiently by utilizing a three-dimensional space.

According to the invention of claim 2, the arrangement space of each transfer means for the front floor and the front member can be accommodated within the lateral width of the station including the arrangement portion of the welding robot.
According to the invention of claim 3, space efficiency is improved.
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 description of drawings]

1 is a plan view of an example of the device of the present invention, and FIG. 2 is a plan view of FIG.
II-II side view, FIG. 3 and FIG. 4 are respectively III of FIG.
-III and IV-IV line cross-sectional views, Fig. 5 is an enlarged side view of the transfer means for the front floor and rear floor, and Fig. 6 is the transfer means for the rear floor as viewed from the right side of Fig. 5. Front view,
FIG. 7 is a schematic plan view of the second floor portion, FIG. 8 is an enlarged plan view of the main portion of the second floor portion, and FIGS. 9 and 10 are IX- of FIG. 8 respectively.
It is a sectional view taken along line IX and line XX. W ₁ …… Front component W ₂ …… Front floor W ₃ …… Rear floor (1) …… Coupling station (2) …… Set jig (4) …… Transfer means (4a) for front component (rear member) ) …… Traffic frame (4b) …… Transfer jig (5) …… Transfer means for front floor (6) …… Transfer means for rear floor (front member) (5a) (6a) …… Up and down Frame (5c) (6c) …… Movable frame (5e) (6e) …… Transfer jig (10) …… Swapping station (12) …… Transfer means for front component (13) …… Guide frame (14) ) …… Second floor (15) …… Front floor transportation means (16) …… Rear floor transportation means (17) …… Post frame

Claims (3)

(57) [Claims] 1. In an apparatus for assembling an automobile floor by connecting three members of a front component, a front floor and a rear floor, these three members are required to have a positional relationship at a station where each of these members is loaded by each transfer means. Place a set jig to position and support with,
Welding robots for welding and joining the three members on the setting jig are arranged on both sides of the station, and are joined to the rear part of the front floor of the front component and the rear floor with the floor payout direction from the station as the front. Is a rear member, and a member connected to the front portion of the front floor is a front member, and a conveying means for the rear member that conveys the rear member is provided at a supply position behind the station, and the station is further arranged. A second floor is provided above the first floor, and processing lines for the front floor and the rear member are arranged on the second floor, and the front floor and the rear member processed by the respective processing lines are placed from the second floor. Each carrier for the front member for the front floor that descends to the supply position above the placement part of the welding robot on one side of the station A step is provided, and the transfer means for the rear member is configured to convey the rear member conveyed to the rear supply position to the front and place it on the setting jig, and the front member for the front floor. Each transfer means for
Each member conveyed to the upper supply position is lifted, shifted to an upper position of the station, lowered, and then position-adjusted and placed on the setting jig in the front-rear direction. Characteristic automobile floor assembly equipment. 2. Each of the transfer means for the front floor and each of the front members is a lift frame that is vertically movable on a support frame that is erected above the placement portion of the welding robot on the other side of the station. 2. A shiftable movable frame is attached on the station and one side thereof, and a transfer jig for holding each member is suspended in the movable frame so as to be movable back and forth. The vehicle floor assembly device described. 3. A replacement station is provided between the station and a rear member supply position behind the station so that the setting jig can be withdrawn from the station and can be replaced, and a transfer means for the rear member is provided. A transfer jig holding a rear member is hung up and down on a traveling frame that reciprocates between the supply position and the station along a guide frame installed in a space above the exchange station. The floor assembly device for an automobile according to claim 1 or 2, wherein the floor assembly device is an automobile.