JP2577279B2 - Work supply device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a work supply apparatus applied to an automobile assembly line or the like.

2. Description of the Related Art Conventionally, a vehicle body assembly station provided on an automobile assembly line is known in which a floor, a side panel, a roof, a dashboard upper, and a rear tray are connected to assemble a vehicle body skeleton. In this apparatus, as seen in Japanese Patent Application Laid-Open No. 61-232070, a work set device for gripping a roof, a dashboard upper and a rear tray is provided on a line in a suspended manner, and a welding jig on both sides of an assembly station is provided. There is also known a device in which a roof, a dashboard upper and a rear tray are inserted and set from above from the left and right side panels held by the setting device.

In this apparatus, the work set device can be reciprocated between the assembling station and the work transfer station in front of the assembly station.
A transfer machine equipped with a jig that can place the roof, dashboard upper, and rear tray in the required positional relationship is arranged, and the jig advances into the transfer station by the operation of the transfer machine, and the transfer is performed. The three pieces of work, the roof on the jig, the dashboard upper, and the rear tray, are delivered to the work set device moved back to the station.

(Problems to be Solved by the Invention) In the above, the work mounting work on the jig of the transfer machine is generally performed manually, which is a problem in improving productivity.

It is conceivable that the work is automatically placed on the jig by the loader device. However, it is difficult to arrange a loader device for a plurality of works in a limited space such as a line side. Also, the work transfer from the line to the transfer station has to rely on humans due to the difficulty in laying out the conveyor, making automation difficult.

In view of the above points, an object of the present invention is to provide a work supply apparatus capable of automating a work placing operation by utilizing a space three-dimensionally.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a work setting device provided on a line, in which a plurality of works are placed in a required positional relationship via a transfer machine provided on the line side. In the supply device, a pallet on which a plurality of works can be placed in a required positional relationship is provided, and the transfer machine transfers the plurality of works on the pallet to the work setting device while the pallets are placed on the pallet. In addition to the above configuration, an elevator is opened at a portion of the floor on the second floor provided above the line laying position, which is located immediately above the transfer machine, and pallets are transferred to and from the transfer machine. A drop lifter is provided between the lift port and the transfer machine so as to be able to move up and down, and a loader device for placing a plurality of works in a required positional relationship on a pallet raised by the drop lifter on the second floor portion; Work processing line and Is arranged,
The work is placed on the pallet by the loader device from the end of the processing line.

(Operation) In the present invention, a pallet on which a plurality of works are placed is placed on a transfer machine, and the plurality of works on the pallet are delivered to a work setting device. In this case, the second floor portion is not subject to space restrictions unlike the space around the transfer machine arranged on the line side. Therefore, the loader device is arranged on the second floor portion, A plurality of works can be automatically placed on the pallet by the loader device.

Further, by arranging the processing line of each work on the second floor portion, each work can be placed on the pallet from the processing line via the loader device, and the work transfer from the work processing line requires no labor. .

(Embodiment) Referring to FIGS. 1 and 2, (1) shows an automobile assembly line, and a floor loading station (2 ₁ ) and a work transfer station ( 2 ₂₎ and the vehicle body assembly station (3) and a provided with placing the welding device on both sides of the line side of the said set elevational station (3) (4) (4), on the line, a floor setting device (5) roof, dashboard upper, ceiling type workset device for three work rear tray and (6) is provided, the floor W ₁ which has been processed by the floor processing line (7) in the floor input station (2 ₁₎ transfer device while transferring from (8) to the floor setting device (5), work transfer station (2 ₂₎ transfer device arranged on one side of the line side (9)該移mounting station (2 ₂₎ Oite roof W ₃ and the dashboard upper
The W ₄ and the rear tray W ₅ is transferred to the workpiece setting device (6),
Floor W ₁ and roof by means of the respective set devices (5) and (6)
The three-point work W ₃ , dashboard upper W ₄ and rear tray W ₅ are transported to the assembling station (3), and the left and right side panels W ₂ , W ₂ are floor-W
_An automobile body W was assembled by welding to _one and three-point works, and the assembled body W was conveyed to a forward punching station by a transfer device (10) for dispensing.

As shown in FIG. 3, each of the welding devices (4) includes a pair of front and rear columns (4b) and (4b) on a slide table (4a) provided on the side of the assembly station (3) and movable back and forth. ), A jig base (4c) is pivotally supported in an inverting manner inward and outward, and a welding jig (4d) is detachably attached to the front surface of the jig base (4c). set the side panel W ₂ to the weld fixture (4d) via the preset jig (11a) with said welding jig (4d) to the preset apparatus outside while inverted outward position (11), This was assembled to and inverted by floor W ₁ and the 3-point workpiece to inward orientation of the weld fixture (4d), the welding gun comprising them to the weld fixture (4d) (4e)
And welded.

The floor setting device (5) includes a lifter (5 ₁ ) provided at a floor loading station (2 ₁ ) and a transport unit (3) capable of reciprocating between the loading station (2 ₁ ) and the assembling station (3). 5 ₂ ).

The lifter (5 _1), by supporting the dosing station (2 ₁₎ guide posts erected on both sides of (5 _1a) (5 _1a) to a pair of lifting frame (5 _1b) (5 _1b), the Both lifting frames (5 _1b )
(5 _1b) of which is configured to move up and down through each rack and pinion mechanism (5 _1e) which is driven synchronously via a synchronization shaft (5 _1d) by the motor (5 _1c) as a sixth illustration, when the floor W ₁ is turned to input station (2 ₁₎ by a transfer device (8), the both lifting frame (5 _1b)
On (5 _1b) is raised to by both said lifting frame (5 _1b) (5 _1b) was such that received the floor W _1.

The transfer unit (5 ₂ ) has a loading station (2 ₁ )
Track frame (5
_2a ), the details of which are shown in FIG. 6 to FIG. 9, and a plurality of rollers are _mounted on a pair of rails ( _52b ) ( _52b ) on the track frame ( _52a ). and (5 _2c) leg of each pair before and after engaging through (5 _2d) heald having _{(5 2d) (5 2e)} , is supported freely move back and forth in the traveling frame (5 _2e) A traveling frame (5 _2e ) including a sliding frame (5 _2f ) and a floor supporting frame (52 _g ) supported on the sliding frame (5 _2f ) so as to be movable back and forth.
In conjunction with mounting the hydraulic motor (5 _2j) having a pinion (5 _2i) on the output shaft to bite into the rack (5 _2h) on the trajectory frame (5 _2a), the gear (5 _2k by the motor (5 _2j) ) axially supports a vertical shaft (5 _2l) which is driven via a shaft (5 _2l upper end fixed to the sliding frame (5 _2f) in the) rack (5 _2m) to bite into the pinion (5 _2n ) fitted with a pinion that is sandwiched further sliding Dowaku (rack (5 _2o attached to the lower surface of the upper surface and the floor supporting frame 5 _2f) in the traveling frame _{(5 2e) (5 2g)} ) (5 2p) between (5 _2q) pivoted to, according to the operation of the hydraulic motor (5 _2j) Te Thus, the rack (5 _2h) and the running frame by a pinion (5 _2i) (5 _2e) orbital frame a (5 _2a) above while moving, the slide frame (5 _2f) is moved relative to the rack (5 _2m) and the running frame by a pinion _{(5 2n) (5 2e)} , this time the pinion (5 _2q) is a rack (5 _2o) Rotation by bite And a work support frame (5 _{2 g)} via a rack (5 _2p) moves relative to the sliding frame _(2f), said workpiece support frame (5 _{2 g)} in the two stations (2 ₁₎ (3) between High speed reciprocating motion is provided.

Then, when the transport unit (5 ₂ ) is returned to the loading station (2 ₁ ), the lift frames (5 _1b ) and (5 _1b ) of the lifter (5 ₁ ) are lowered to lower the floor support frame (5 _2g ). to placing the floor W _1, and then by the forward conveying unit (5 ₂₎ in the assembly station (3) side, the floor W ₁ and to convey to the station (3). When the delivery of the vehicle body W from the assembly station (3) is delayed, the transfer unit (2 ₂ ) is set as an idle station and the transfer unit (5 ₂ ) waits here.

The workpiece setting device (6) is transferred station ceiling portion of the line (2 ₂₎ and the assembly station (3) and to extend over as Tate設the guide frame both said stations along (6a) (2 ₂₎ (3) travel frame is reciprocated between the (6b) provided on the lower surface of the running frame (6b), the front and rear pair of first set jig for holding the roof W ₃ (6c) (6c), a second set of jigs for holding the dashboard upper W ₄ (6d), those formed by suspended a third setting jig (6e) respective liftably for holding the rear tray W _5, heald (6b ) To the assembling station (3), then set jigs (6c) (6d)
(6e) is lowered, and to insert the set from above between each work W _3, W _4, W ₅ the weld fixture (4d) both side panels W ₂ held in (4d), W ₂ I made it.

The transfer machine (9), was charged 3-point workpiece W _3, W _4, W ₅ pallets is placed in the required positional relationship (12) from the side into the transfer station (2 ₂₎ in the When the traveling frame (6b) is returned to the transfer station (2 ₂ ), each of the set jigs (6c)
(6d) are each work W ₃ on (6e) on the pallet _{(12), W 4, W} 5 and is configured to transfer. With this in more detail with reference to FIG. 10 through FIG. 12, transfer device (9) is machine frame provided on the side of the transfer station (2 ₂₎ (9a) on the base frame ( A slide frame (9d) which is moved sideways by a cylinder (9c) is mounted on 9b), and a receiving frame (9e) supporting a pallet (12) is slid sideways on the slide frame (9d). And a pair of chains (9g) (9g) each having one end connected to a fixing piece (9ff) on the lower surface of the receiving frame (9e).
d) is wound around each sprocket (9h) pivotally attached to both ends, and the other end of each chain (9g) is connected to a fixing piece (9i) on a base frame (9b). With the forward / backward movement of the frame (9d), the receiving frame (9e) is moved back and forth at a double speed between the forward / backward position in the transfer station (2 ₂ ) and the lateral retreat position.

Pallet (12), as shown in FIG. 14 and FIG. 15, the framework pallet body (12a) on the roof W ₃ for the dashboard upper W ₄ for the rear tray W each plurality of retainers for ₅ (12b (12c) and (12d), and the pallet (12) is moved up and down along a support (14a) standing outside the transfer machine (9) as shown in FIG. The lifter (14) descends from the second-floor part (13) provided above the line laying place and places it on the receiving frame (9e) at the retreat position. The receiving frame (9e) and the drop lifter (14) are provided with a pair of locating pins (9j) (14b) which fit into pin holes (12e) (12f) formed in a pair on the pallet (12). The pallet (12) can be positioned and placed on the receiving frame (9e) and the drop lifter (14).

The locating pin (9j) on the receiving frame (9e) is, as shown in FIG. 13, a clamp claw (9k) tilted by a cylinder (9k).
l), and a pallet (12) with a pin hole (12e) formed by the clamp claw (9l).
2g) to be able to clamp and drop lifter (14)
The upper locating pin (14b) was similarly constructed.

On the floor of the second floor portion (13), as shown in FIG. 4 and FIG. 5, an elevator (15) located above the disposition portion of the transfer machine (9) is opened. part (13), each loader of the hatch roof W ₃ so as to straddle the (15) and dashboard upper W for ₄ and rear tray W for ₅ (16) (17)
(18) with placing, a second floor (13) to the processing line (19) for the roof W ₃ and the processing line for the dashboard upper W ₄ (20) arranged, lift the drop lifter (14) Pallet (12) through the mouth (15) to the second floor (13)
The roof W ₃ with its processing line (19)
From the end of the pallet (12) via the loader device (16)
While placed on, placed on the conveyor of the end portion of the processing line a dashboard upper W ₄ (20) (20a) and loader (17) said pallet through the (12), whereas,
Since the rear tray W ₅ has a processing line with a single plate structure unnecessary,
Set the rear tray W ₅ manually in an unillustrated mounting table, and to be placed on the pallet (12) by which the loader (18).

In the drawing, reference numeral (21) denotes a stock frame installed in a space above the ceiling of the assembly line (1), and a gantry (22) for detachably holding the welding jigs (4d) and (4d) on the stock frame (21). ), And the crane (23) provided on the upper surface of the stock frame (21) is used to mount the gantry (22) through the lift port (24) opened at the ceiling of the assembly station (3). It is lowered to the station (3), and the welding jigs (4d) (4d) are transferred between the gantry (22) and the welding devices (4) (4) on both sides, and the jigs are exchanged when changing the model. Was obtained. The guide frame (6a) is movable in the front-rear direction so as to be able to retreat from the elevating opening (24) so as not to interfere with the guide frame (6a) of the work setting device (6) when the gantry (22) is raised and lowered. did.

Next, the means for assembling the vehicle body W according to this embodiment will be described. First, the loader device (16) on the second floor (13)
(17) After setting the three-point work of the roof W ₃ , dashboard upper W ₄ , and rear tray W _{5 on} the pallet (12) in the required positional relationship by (18), the pallet (12) is dropped by the drop lifter (14). It is lowered and placed on the receiving frame (9e) of the transfer machine (9) located at the retreat position, and then the receiving frame (9e) is moved to the advanced position by the operation of the transfer machine (9) to move the pallet (12). was put into the transfer station (2 ₂₎ inside, passing each workpiece the setting jig (6c) (6d) (6e) of the work setting device which is backward into the transfer station (2 ₂₎ (6),
The conveying unit (5 ₂₎ transfer floor W _1, the conveying unit (5 ₂₎ Floor W ₁ and 3-point workpiece by the workpiece setting device (6) of the loading station (2 ₁₎ floor setting device (5) Is transferred to the assembly station (3), and the welding jigs (4d) of the welding devices (4) (4) on both sides
(4d) The side panels W ₂ , W _{2 held} on the floor W ₁ are joined to the floor W ₁ from both sides, and the three-point work is connected to the side panels W ₂ , W
Insert and set between the _two from above and weld them together.

On the other hand, the transfer machine (9) transfers the empty pallet (12) after receiving the work to the work setting device (6) to the receiving frame (9).
e) Return to the retreat position to the side of the transfer station (2 ₂ ), then the drop lifter (14) rises, and the pallet (12) is lifted from the receiving frame (9e) to the second floor. The pallet (12) is lifted up and the following three works are loaded on the pallet (12) along with the welding work at the assembly station (3).
6) It is placed according to (17) and (18), and the assembly of the vehicle body W is continuously performed by repeating the above operations.

(Effect of the Invention) As is clear from the above description, according to the present invention, 2
A plurality of works are placed on a pallet in the floor portion, and the pallet is directly supplied to the transfer machine from directly above the line-side transfer machine, and the plurality of works on the pallet are transferred through the transfer machine. Since the work is transferred to the work set device on the line, there is no need to perform work placement in the limited line side space around the transfer machine, and there is no need to provide work transfer equipment on the line side, so space efficiency is improved. In addition, a large space for placing the loader device can be secured on the second floor, so that the work placing operation can be automated using the loader device. Further, the work processing line can be arranged on the second floor. As a result, the work can be directly supplied from the processing line to the loader device, which has the effect of significantly improving productivity.

[Brief description of the drawings]

FIG. 1 is a plan view of an automobile assembly line to which the present invention is applied,
2 is a side view, FIG. 3 is a front view cut along the line III-III of FIG. 2, FIG. 4 is a front view cut off the line IV-IV of FIG. 2, and FIG. , FIG. 6 is a plan view of the floor set device, FIG. 7 is a side view taken along the line VII-VII of FIG.
FIG. 9 is an enlarged sectional view taken along the line VIII-VIII of FIG. 7, and FIG.
10 is a sectional view taken along line IX-IX of FIG. 10, FIG. 10 is a front view of the transfer machine as viewed from line XX of FIG. 2, FIG. 11 is a plan view thereof, and FIG.
FIG. 13 is a right side view of FIG. 10, FIG. 13 is a sectional view taken along line XIII-XIII of FIG. 12, FIG. 14 is a plan view of a pallet, and FIG.
XV line sectional view, FIG. 16 is an exploded perspective view of the vehicle body. (1) Assembly line (6) Work setting device (9) Transfer machine (12) Pallet (13) Second floor (14) Drop lifter (16) (17) (18) Loader device (19) (20) Work processing line

Claims (1)

(57) [Claims] 1. An apparatus for supplying a plurality of works in a required positional relationship to a work set device provided on a line via a transfer machine provided on a line side. Pallets that can be placed
A plurality of works on the pallet are transferred to the work set device while the pallet is placed on the pallet, and the work is directly above the transfer machine on the floor of the second floor provided above the line laying place. , A drop lifter for transferring pallets to and from the transfer machine is provided between the lift port and the transfer machine so as to be able to move up and down, and a drop lifter is provided on the second floor. A loader device for placing a plurality of works on the raised pallet in a required positional relationship and a processing line for each of the works are arranged, and the work is placed on the pallet by the loader device from the end of the processing line. A workpiece supply device characterized in that: