JPH01181929A - Carrying-out device for press formed parts - Google Patents

Abstract

PURPOSE:To improve the carrying efficiency for a product by placing in parallel first and the second carrying conveyers against plural formed parts, and also, providing a transfer use conveyer between both its ends, and carrying simultaneously plural pallets. CONSTITUTION:On the extension in the carrying direction of a press machine 1 having plural forming trains, first and the second carrying conveyers 41, 42 being parallel to each other are provided, and between its ends, transfer use conveyers 43, 44 are provided, respectively. Formed parts 2a, 2b which are formed simultaneously by plural kinds each by the continuous press machine 1 are swept out simultaneously in parallel to a sweeping-out position P1 and carried successively to a loading position P2, and carried out through a carrying- out device 4. In such a case, the parts 2a, 2b are loaded successively on pallets 15a, 15b and circulate along the conveyers 41, 44, 42 and 43. In such a way, the number of pallets is curtailed, and also, the press machine is operated continuously, therefore, the carrying efficiency for a product is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION A0 OBJECTS OF THE INVENTION (1) Industrial Field of Application The present invention relates to a press-formed parts delivery device for loading press-formed parts formed by a press machine onto a pallet and transporting them.

(2) Conventional technology Conventionally, a device for loading press-formed parts discharged from a press machine onto a pallet and carrying it out has been developed, for example, in Japanese Patent Laid-Open No. 6
Publication No. 1-226449 and JP-A-62-83970
It is publicly known from the publication No.

(3) Problems to be Solved by the Invention However, in the conventional method described above, press-molded parts are discharged one by one from a press and are sequentially loaded onto a pallet. However, in order to improve efficiency, press machines have been used in recent years that have improved operating speed and are capable of simultaneously forming multiple types of press-formed parts.
When the above-mentioned conventional method is applied to such a press machine, a delivery device is required for each press-formed part. Therefore, the applicant has already proposed a device that loads multiple types of press-formed parts onto multiple pallets at the same time, but depending on the type of press-formed parts, it is necessary to change the loading posture on the pallets. Therefore, the number of items that can be loaded onto a pallet may vary. For this reason, when multiple press-formed parts are loaded onto corresponding pallets at the same time, one pallet is loaded with the press-formed parts that can be loaded, while other pallets are loaded with press-formed parts that are less than the capacity. A situation occurs where only molded parts are loaded,
Pallets cannot be used effectively.

The present invention has been made in view of the above circumstances, and it is possible to load as many press-formed parts as can be loaded on a plurality of pallets for carrying out a plurality of types of press-formed parts and carry them out, and also to It is an object of the present invention to provide a press-formed parts unloading device that does not require stopping a press machine during replacement and improves efficiency.

B1 Structure of the invention (1) Means for solving the problem In order to achieve the above object, according to the invention, the loading position for loading a plurality of mutually parallel press-formed parts onto individual pallets is set in the longitudinal direction. a first conveyor disposed as a central portion of the conveyor; a second conveyor disposed adjacent to the first conveyor; and a transfer conveyor disposed between both ends of the first and second conveyors. Each of the conveyors is configured to be able to simultaneously convey a plurality of pallets corresponding to a plurality of press-formed parts arranged in parallel at a loading position.

5 = (2) Effect According to the above configuration, it is possible to circulate the pallets in a closed circuit passing through the loading position, and only the pallets loaded with the loadable amount of press-formed parts are taken out from the closed circuit. By supplying a new pallet at the same time, the number of pallets can be minimized (and press-formed parts can be carried out efficiently. Moreover, pallets can be sequentially supplied to the loading position, so when replacing a pallet, the press It is not necessary to stop the machine.

(3) Example Hereinafter, an example of the present invention will be explained with reference to the drawings. First, in FIGS. 1 and 2, a plurality of press-formed parts 2a, 2b, for example, two kinds of press-formed parts, are simultaneously press-formed in a continuous press 1. are parallel and simultaneous payout positions P,
from this dispensing position P to the loading position WPt. Press-formed parts 2a, 2 that have reached loading position P2
b is a barren on the unloading device 4 by the loading robot 3)
5a and 5b, and is carried out by the carrying out device 4.

In the continuous press machine 1, a plurality of processing stations S-, S-+, ... are set at equal intervals along the conveyance direction 6, and the processing stations S, ..., S-+, ...・
There is a lower mold 7an for working together to press the plate material.
+ 7an-+ , ..., 7t)n, 7bn
-+.

...and upper mold 8a, , Ban-+ ,"', 8b
Two sets each of n, 8b11-1+, . . . are arranged. Moreover, each upper mold 8a, , 8an-+ , -, 8
bn, 8b, -1, .

The continuous press machine 1 includes processing stations S, .

5fi-1+... A conveying means 11 is attached for sequentially conveying the plate material between. This conveyance means 11 includes a pair of transfer pars 12., which are arranged parallel to the conveyance direction 6 on both sides of the processing stations S, S-1, .
12, a plurality of arms 13 installed between both transfer pars 12, 12, and a handling mechanism 14 provided on each arm 13 for detachably holding the plate material and press-molded parts 2a, 2b. .

This conveying means 11 includes lower molds 7 a , , 7 a
n-+, -, 7bn, 7 b, . . . and upper mold 8a, .

8 a++-1,"', 8 bn, 8 bn
-+, ``'' During press processing, the arm 13 and handling mechanism 14 are moved to each processing station S, l.
, 5n-1, . . . standby in between, upper mold 8an, 8
When a, , -1, -, 8b a, 8b, . . . rises, the adjacent machining station S, , S, , .
The plate materials can be sequentially conveyed over the course of the process. Further, the press-formed parts 2a and 2b press-formed at the processing station S-i at the front end along the conveyance direction 6 are placed at processing stations S-, S, , , +, . . . at the same intervals. Payout position P set in front of S, l,
Then, it is delivered by the conveyance means 11.

The unloading device 4 extends in a direction perpendicular to the transporting direction 6 so as to cross a loading position P2 set at a front position of the continuous press 1 along the transporting direction 6, and has a discharging position P, The loading position P2 is in the transport direction 6.
It is set on a straight line along.

Referring also to FIG. 3, a rectangular frame 19 supported on the floor via support legs 20 is disposed between the dispensing position P and the loading position 22. On the top, there are a conveyance bar (15a) on which the press-formed part 2a can be placed and a conveyance bar (15b) on which the press-formed part 2b can be placed, with a variable interval between them, and between the unloading position Pl and the loading position 22. It is arranged so that it can be moved back and forth.

A traveling truck 17 having wheels 16 that can be moved on both sides of the frame 19 is placed on the frame 19, and the pair of transport pallets 15a and 15b are placed on the traveling truck 17 so that they can be moved around each other. Arranged at variable intervals. Further, on both sides of the frame 19, there are drive sprockets 21 at the dispensing position P and the side drive sprockets 21.
and a pair of driven sprockets 22 on the side of the loading position P2 are each pivotally supported, and are connected to the output shaft of a motor 24 which is fixedly arranged on a support plate 23 provided at the lower part of the frame 19 and is capable of forward and reverse rotation. A driven shaft 25 is connected to both drive sprockets 21.21. Moreover, there is a chain 2 between both driving sprockets 21 and both driven sprockets 22.
6 are wrapped around each other, and their chains 26
．． 26 are connected to the traveling carriage 17, respectively. Therefore, the operation of the motor 24 moves the traveling cart 17 to the payout position P.
1 and the loading position 22.

Moreover, at the end of the frame 19 on the side of the dispensing position P and the end on the side of the loading position P2, there are conveyor holes (15a, 1).
A pair of stoppers 27, 27 that can come into contact with 5b are each fixedly provided.

The traveling truck 17 has two pairs of guide rods 28a extending from both sides thereof toward the center in the width direction.

28a; 28b, 28b are fixed, and the retransport pallets 15a, 15b have respective guide rods 28a, 28a;
28b, movable along 28b. Furthermore, cylinders 29 are supported and fixed at the lower part of the traveling truck 17 at positions corresponding to the respective transport pallets 15a and 15b. These cylinders 29 are connected to each of the guide rods 28a, 2
8a; 28b, 28b are fixedly arranged at the bottom of both sides of the carriage 170, and the piston ronds 30 of these cylinders 29 correspond to the corresponding transport pallets 15a, 15.
b, respectively. Therefore, by telescopically operating each cylinder 29, both conveyor barres) 15a,
15b expands or contracts.

A support frame 31 is fixedly arranged at the loading position P2, and a pair of guide rails 32.32 extending parallel to the conveyance direction 6 are fixedly installed on the upper part of the support frame 31. A loading robot 3 is provided so as to be capable of reciprocating movement along.

The loading robot 3 includes a movable body 33 that is movable along a pair of guide rails 32 and 32, and a rotating arm 35 whose base end is rotatably supported by a support arm 34 that hangs down from the movable body 33. , a finger 36a rotatably supported at the tip of a rotary arm 35.

36b.

A base end of a rotating arm 35 is rotatably supported at the lower end of the support arm 34 via a horizontal first rotating shaft 37 perpendicular to the conveying direction 6. 1 rotation axis 3
A second rotating wheel 38 extending parallel to the rotating arm 7 on both sides of the rotating arm 35 is rotatably supported. Fingers 36a and 36b are provided at both axial ends of the second rotating shaft 38, and each finger 36a and 36b has a suction cup 39 for removably holding each press-formed part 2a and 2b.
are provided respectively.

According to the loading robot 3, the press-formed parts 2a, 2 are transported in parallel and simultaneously to the loading position Pt.
b at the same time and its press-formed part 2a,
It is possible to load the pallets 5a and 5b on the unloading device 4 while changing the posture of the pallets 2b.

In FIG. 4, FIG. 5, FIG. 6, and FIG. 7, the unloading device 4 is operated in a straight line extending in a horizontal direction perpendicular to the conveying direction 6 with the loading position P2 as the central part in the longitudinal direction. , 5b;
A second conveyor 42 arranged parallel to the first conveyor 41 on the side opposite to the continuous press 1 with respect to the first conveyor 41, and first and second conveyors 41,42.
first and second transfer conveyors 43, 44 for delivering and receiving pallets 5a, 5b between the ends of the loading position P
A pair of support stands 45a disposed at the longitudinal center of the first conveyor 41 corresponding to No.2.

45b.

The first transport conveyor 41 is disposed on a horizontal straight line passing through the loading position P2 perpendicular to the transport direction 6, between the receiving position P3 and the delivery position 24 with the loading position WP2 as the central position. , each press molded part 2a, 2b
A pair of barres (5a, 5b) on which each can be placed individually
can be transported between the receiving position P3 and the loading position P2 and between the loading position P2 and the delivery position 24.

This first transport conveyor 41 has a pedestal 46 fixed on the floor between the receiving position P3 and the delivery position 24.
and rails 4 fixed in parallel on both upper sides of the pedestal 46.
7.47, a rail 48.48 fixed in parallel to the lower part of the other side of the pedestal 46, and a pair of rails 47.48, which form a pair on both sides of the pedestal 46 and are movable along each of the rails 47.48; Set of moving tables 49a+, 49a+; 49b+
, 49b+; 49az, 49az; 49b
z, 49bz and each moving platform 49a, 49a+ ~
49bz, 49b2 rail 47,48; 47,48
and a driving means 50 for reciprocating along the .

A movable platform 49a is arranged on both sides of the pedestal 46.

49b+, 49az, 49bz; 49a+
, 49b+ , 49az , 49bz are the connecting members 51
are interconnected with each other, and therefore each moving platform 49a, 49
a+; 49b+, 49b+; 49az, 49
az;49bz and 49bz move together. Moreover, when moving to the loading position P2, the moving platform 49a
+, 49az are the positions corresponding to the press-formed parts 2a at the loading position P2, and the moving platforms 49bl, 49
Each moving platform 49a+, 49b+
, 49az, and 49bz are arranged.

Paired moving platforms 49a+, 49a+ on both sides of the pedestal 46
;49b+,49tz;49az,49az
;49bz, on top of 49bz is pallet 5a.

Pallet mounting plates 52 on which pallet 5b can be mounted are respectively mounted. Further, support holes 59 are bored in the pallet mounting plate 52 at portions corresponding to the positions of the vertices of the virtual quadrilateral, and each of the movable tables 49at, 49at;
9b+, 49b+; 49az, 49az; 4
9bz and 49bz, a pair of support pins 53 and 53 are vertically movably disposed to fit into the support holes 59 of the pallet placement plate 52 from below and support the pallet placement plate 52. Ru. These support pins 53.53 are connected to each moving platform 49a+, 49a+; 49b+, 49tz
; 49az, 49az; 49bz, is slidably fitted into guide tubes 54, 54 provided at 49bz. Moreover, the lower end of each support pin 53.53 is connected to one end of the first link 55.55, and the other end of the first link 55.55 is connected to one end of the second link 56.56. The other end of .56 is located at a position below the support pin 53.53 on the axial extension line of the support pin 53.
a+, 49a+; 49b+, 49b+
;49az, 49az;49bz, 49b2
is supported by Further, a third link 57 extending in the longitudinal direction of the rail 47.48 is connected to the connection point between the first link 55°55 and the second link 56.56, and a third link 57 extending in the longitudinal direction of the rail 47.
a+, 49a+; 49tz, 49b+; 4
The third links 57 of 9az, 49az; 49bz, 49bz are coaxially connected to each other. Moreover, the moving platform 49
b2.49b2 includes a first link connected to the third link 57.
An elevating cylinder 58 is provided, and each moving table 49a1.
49a+; 49b+, 49bz; 49az.

49az: 49bz, 49bt support pin 53°5
3 move up and down in synchronization.

The driving means 50 is a movable table 4 disposed on one side of the frame 46.
A rack 60 fixed to 9a+, 49b+, 49az, 49bz, and a movable platform 49a+, 49b+, 49az arranged on the other side of the pedestal 46.

Rack 60 fixed to 49b2 and both ranks 60.6
0 meshing pinion 61.61 and both pinions 61.
61 and a drive motor 62 capable of forward and reverse rotation, and the drive motor 62 is fixedly arranged on the pedestal 46 at a position corresponding to the delivery position P4.

According to this driving means 50, the moving table 49a+.

49a+, 49b+, 49b are reciprocated between the receiving position P3 and the loading position P2, and the moving table 49az
, 49az, 49bz, and 49bz are reciprocated between the loading position P2 and the delivery position 24.

The support stand 45a holds the press-formed part 2a at the loading position P2.
The support body 45
b is disposed so as to be movable up and down on a pedestal 46 corresponding to the press-formed part 2b at a position adjacent to the support pedestal 45a. These supports 45a.

45b is provided with four protruding support bins 64 that can support the pallet placement plate 52 by fitting from below into support holes 63 bored at each vertex position of the virtual quadrilateral on the pallet placement plate 52. Ru. Further, the upper ends of four guide rods 65 extending vertically are connected to each of the support stands 45a and 45b, and each guide rod 65 is slidable on four guide tubes 66 fixed to the frame 46. mated. Also, the support stand 45a
.

Second elevating cylinders 67 having axes extending vertically are fixed to the pedestal 46 at positions corresponding to the central portions of the mounts 45b, and the upper ends of the piston rods 68 in each of the second elevating cylinders 67 are connected to the support bases 45a, 45b. Therefore, each support stand 45a, 45b moves up and down while being guided by the guide tube 66 in response to the expansion and contraction operation of the second lifting cylinder 67, and by making the amount of expansion and contraction of the second lifting cylinder 67 different from each other, 45a, 45b
The relative vertical position of can be adjusted.

The second conveyor 42 has a feeding position P corresponding to the receiving position P3 and a take-out position P corresponding to the delivery position P4.
5, and is arranged adjacent to the first conveyor 42 on the opposite side from the continuous press Ill,
A pedestal 70 is fixed on the floor between the take-out position P5 and the feed-in position tPb, and a pair of left and right driven sprockets 71 are pivotally supported by the pedestal 70 at the end on the side of the take-out position P.
71, a pair of left and right drive block 72, which are pivotally supported by the pedestal 70 at the ends of the 26 feeding positions, and the pedestal 70.
A drive motor 73 is fixedly arranged at 0 and connected to drive sprockets 72 and 72, and a pair of left and right endless chains 74, 74 are wound around the drive sprocket 72 and the driven sprocket 71. Both chain motors 4,74
A pallet mounting plate 52 can be placed thereon, and the second conveyor 42 moves from the take-out position P to the feed-in position P6.
It is possible to transport the pallet mounting plate 52 up to the point where the pallet mounting plate 52 is placed.

A plurality of guide rollers 75 for guiding one side of the pallet mounting plate 52 are provided at the upper end of the side of the pedestal 70 at an intermediate portion between the take-out position P on the first conveyor 41 side and the feed-in position 26. A plurality of guides for guiding the other side of the pallet placement plate 52 are provided at the upper end of the side of the frame 70 which is supported pivotably and is opposite to the first transport conveyor 41 between the take-out position Ps and the feed-in position 26. A roller 75 is pivotally supported.

The first transfer conveyor 43 is a conveyor for simultaneously transferring a pair of mutually parallel pallet placement plates 52 from the sending position P6 to the receiving position P3, and is an elevator disposed on the second transfer conveyor 42 side. frame 76 and first conveyor 4
A fixed frame 77 fixed to one frame 46, and a plurality of transfer rollers 78 arranged in three rows and each pivotally supported by the elevating frame 76 to simultaneously convey a pair of parallel pallet mounting plates 52.
Then, guide rollers 79 arranged in three rows and pivotally supported by the elevating frame 76 to guide both sides of the pair of pallet mounting plates 52, and each of the transfer rollers 78 are rotationally driven (
A motor 80 disposed on the lifting frame 76, a plurality of transfer rollers 81 arranged in three rows and each pivotally supported by the fixed frame 77 in order to simultaneously convey a pair of parallel pallet mounting plates 52, and a pair of Guide rollers 82 are provided on the fixed frame 77 to guide the both sides of the pallet mounting plate 52 (three rows of guide rollers 82 are arranged in three rows and are each pivotally supported on the fixed frame 77, and the transfer rollers 81 are rotationally driven). It includes a motor 83 and a free roller 84 disposed between the elevating frame 76 and the fixed frame 77 in correspondence with each transfer roller 78°81.

The fixed frame 77 is such that the pallet mounting plate 52 placed on the pivotally supported transfer roller 81 is mounted on each of the movable tables 49a1, 49a, 49a, 49a, 49a, 49a, 49a,
It is fixed on the pedestal 46 of the first transport conveyor 41 so as to be located above the upper end of the support pin 53 provided on 9b+, 49b+ when it is at its lowest position. Furthermore, the free roller 84 is placed at the same level as the transfer roller 81 and at a fixed position. Further, the elevating frame 76 can be raised and lowered by an elevating drive means 85 such as a cylinder provided between the elevating frame 76 and the floor, and when the elevating frame 76 is at the lowest position, each transfer roller 78 is The pallet mounting plate 52 resting on the chains 74 and 74 is located at a lower position.

According to the first transfer conveyor 43, by operating the motors 80 and 83 with the lifting frame 76 raised and the transfer roller 78 at the same level as the transfer roller 81, a pair of parallel pallets can be moved. The mounting plate 52 is moved from the feeding position P6 of the second conveyor 42 to the first conveyor 4.
It can be transferred to the first receiving position P3.

The second transfer conveyor 44 is a conveyor for simultaneously transferring a pair of mutually parallel pallet placement plates 52 from the delivery position P4 to the take-out position P, and is an elevator disposed on the second transfer conveyor 42 side. frame 86 and first conveyor 4
A fixed frame 87 fixed to one frame 46, and a plurality of transfer rollers 88 arranged in three rows and pivotally supported by the elevating frame 86 to simultaneously convey a pair of parallel pallet mounting plates 52.
Then, guide rollers 89 arranged in three rows and pivotally supported by the elevating frame 86 to guide both sides of the pair of pallet placement plates 52, and each of the transfer rollers 88 are rotationally driven (
A motor 90 disposed on the lifting frame 86 and a pair of parallel pallet mounting plates 52 are simultaneously transported (a plurality of transfer rollers 91 arranged in three rows and each pivotally supported by a fixed frame 87, Guide rollers 92 are arranged in three rows and supported by the fixed frame 87 in order to guide both sides of the pallet mounting plate 52, and guide rollers 92 are arranged in the fixed frame 87 to rotationally drive the transfer rollers 91. It includes a motor 93 and a free roller 94 disposed between the elevating frame 86 and the fixed frame 87 in correspondence with each transfer roller 88°91.

The fixed frame 87 is such that the pallet mounting plate 52 placed on the pivotally supported transfer roller 91 is attached to each of the movable tables 49a1, 49a+,
49b1, 49b+ is fixed on the pedestal 46 of the first transport conveyor 41 so as to be located above the upper end of the support pin 53 provided at the lowest position. Furthermore, the free roller 84 is placed at the same level as the transfer roller 91 and at a fixed position. Further, the elevating frame 86 can be raised and lowered by an elevating drive means (not shown) such as a cylinder provided between the elevating frame 86 and the floor, and when the elevating frame 86 is at the lowest position, each transfer roller 88 2 conveyor 4
It is located at a lower position than the chains 74 and 74 of No. 2.

According to the second transfer conveyor 44, by operating the motors 90 and 93 with the lifting frame 86 raised and the transfer roller 88 at the same level as the transfer roller 91, a pair of parallel pallets can be moved. The mounting plate 52 is transferred from the delivery position P4 of the first conveyor 41 to the second conveyor 4.
It can be transferred to the second take-out position P.

In FIG. 8, the pallet 5a is formed to stack and place press-formed parts 2a such as stiffeners, and the press-formed parts 2a are placed on a mounting plate 96 that can be placed on the pallet mounting plate 52. A plurality of regulating rods 97 are erected to define the periphery of 2a. Further, the pallet 5b is formed to separate and place the press-formed parts 2b such as bonnet outer in the horizontal direction so that they are in a vertical position, and has a mounting plate that can be placed on the pallet mounting plate 52. Board 98
and a mounting plate 9 to define the side edges of each press-formed part 2b.
8 and a plurality of separation plates 100 fixed to the frame 99 for separating the press-molded parts 2b from each other.

Further, since the press-formed parts 2a are stacked one on top of the other, one pallet 5a can load as many press-formed parts 2a as the amount of press-formed parts 2b loaded on the other pallet 5b.

For example, there are 100 press-formed parts 2 on the pallet 5a.
A can be loaded on the other pallet 5b, while 50 press-formed parts 2b can be loaded on the other pallet 5b.

Next, to explain the operation of this embodiment, a pair of press-formed parts 2a, 2 pressed by the continuous press machine 1.
b are simultaneously dispensed in parallel by the conveying means 11 to the dispensing position P□. At this time, the re-transfer baren) 15a, 15
Each press-formed part 2a is waiting at the delivery position P+ with an interval between the press-formed parts 2a and 2b corresponding to the interval between the press-formed parts 2a and 2b at the delivery position P1.

2b is placed on each conveyor baren) 15a, 15b.

The conveyor barrels 15a and 15b on which the press-formed parts 2a and 2b are placed, respectively, are moved from the unloading position P to the loading position P2 by the running of the traveling cart 17, but the cylinder 29 is actuated during the conveyance. Possibly both transport pallets 15a.

The mutual spacing between pallets 15b is widened, and when the re-transport pallets 15a and 15b reach the loading position P2, the spacing between the retransport pallets 15a and 15b corresponds to the spacing between the support stands 45a and 45b.

In this way, the press-formed parts 2a, 2 at the dispensing position P1
Both support stands 45a at the interval between b and loading position P2,
Both transport pallets 15a, 15 correspond to the interval between 45b.
By conveying the press-formed parts 2a and 2b between the unloading position P1 and the loading position 22 while changing the interval of the loading robot 3 at the loading position P2.
This can contribute to simplifying the structure and operation of.

On the other hand, in the first conveyor 41 of the carry-out device 4, the moving tables 49a+, 49a+, 49tz, and 49bt are at the receiving position P3. Moreover, each moving platform 49a+ + 49a+ ; 49b+ is located at the receiving position P3.

Pallet mounting plates 52 are placed on 49b and 49b, respectively,
Those moving platforms 49a+, 49a+; 49b+,
On the pallet mounting plate 52 on 49b+, there are baren) 5a,
5b is placed on each. At this time, the moving table 49
az, 49az; 49bz.

49bz is at the loading position P2, but the support stand 45a,
As 45b moves upward, the moving platform 49az,
The pallet mounting plates 52 on 49az; 49bz and 49bz are respectively support stands 45a.

45b, and a pallet 5a, 5b is placed on each pallet placement plate 52, respectively. Moreover, by making the lifting amounts of the support stands 45a and 45b different, at the loading position P2, as shown in FIG. 5a and 5b are waiting.

In this state, the loading robot 3 operates, and the press-formed parts 2a, 2b are loaded onto the pallets 5a, 5b while tracing trajectories as shown in FIG.

In other words, the press-formed parts 2a, 2b on the respective transport pallets 15a, 15b are removed at the suction point P by the descent of the suction cup 39.
is sucked and held by the suction cup 39, and the transport baren) 15a
, 15b.

Next, both press-molded parts 2a, 2b are attached to a finger 36a.
, 36b, the posture changes from a horizontal posture to a vertical posture as shown by an arrow 101.
Move to side b. When both press-formed parts 2a, 2b move horizontally to a predetermined position in a vertical posture as shown by arrow 102, fingers 36a, 36b descend and reach the first discharge point Pb.
Then, one press-molded part 2b is released from the suction cup 39.

Further, the fingers 36a, 36b move in the opposite direction to the arrow 102, as shown by the arrow 103, and at the second discharge point P, the fingers 36a, 36b rotate as shown by the arrow 104, so that the press-formed part 2a is leveled. After the posture is changed, the press-molded part 2a is released from the suction cup 39.

In this way, the press-formed parts 2a are stacked on one pallet 5a in a horizontal position, and on the other pallet 5b, the press-formed parts 2b in a vertical position are stacked with the separation plate 100 interposed between them. loaded. Moreover, since the pallets 5a on which the press-formed parts 2a are stacked one on top of the other are located at a lower position than the other pallet 5b on which the press-formed parts 2b are stacked vertically, the loading robot 3
Even if both fingers 36a and 36b are made to perform the same operation, the press-formed parts 2a already placed on the pallet 5a and the newly loaded press-formed parts 2a will not interfere with each other, and the loading process will be delayed. It becomes possible to simplify the operation of the robot 3.

When the amount of press-formed parts 2b loaded on the pallet 5b reaches a predetermined amount, for example, 50 pieces, even if the amount of press-formed parts 2a loaded on the pallet 5a is half of the predetermined amount, each barrel at the loading position WPt) 5a .

Loading of the press-formed parts 2a and 2b into the press-formed parts 5b is completed. In other words, a predetermined amount of press-formed parts 2b are placed on a pallet 5b.
When loaded, both support stands 45a.

45b descends to the lowest position. As a result, at the loading position P2, the pallet mounting plate 52 on which the pallets 5a and 5b are mounted, respectively, is moved from the support bases 45a and 45b to the first
Moving tables 49az, 49az of the conveyor 41; 4
It will be transferred to '9bz and 49bz.

Therefore, the movement of the first conveyor 41 is started, and the moving tables 49a2, 49az; 49bz, 49bz are moved from the loading position P2 to the delivery position P4, and the moving tables 49
a+, 49a+; 49bz, 49bz are moved from the receiving position P3 to the loading position P2. As a result, the pallet 5a loaded with half or only a predetermined amount of press-formed parts 2a is placed at the delivery position ML P a,
Ballen) 5b loaded with a predetermined amount of press-formed parts 2b
The pallet 5a loaded with half of the predetermined amount of press-formed parts 2 or an empty pallet 5a and the empty pallet 5b are moved to the loading position P2. Therefore, at the delivery position P4, the moving tables 49az, 4
The support pins 53 of 9az; 49bz and 49bz are lowered, and the barrels 5a and 5b are placed on the transfer roller 91 of the second conveyor 44. Also, at loading position P2,
The support stands 45a and 45b are raised, and the pallet mounting plate 52 on which the pallets 5a and 5b are placed is moved to the support stand 45a and the pallet mounting plate 52, respectively.
45b. After that, on the first conveyor 41, the moving tables 49az, 49at; 49bz, 49bz
returns to the loading position Pg, and the moving platforms 49a+, 49ar
;49b+, 49bI return to receiving position P3.

Furthermore, the operation of the first conveyor 41 and the raising operation of the supports 45a, 45b are performed until the new press-formed parts 2a, 2b are conveyed to the loading position P2.

The pallet placement plate 52 placed on the transfer roller 91 of the second transfer conveyor 44 is placed on the transfer roller 88 after raising the elevating frame 86 to bring the transfer roller 88 to the same level as the transfer roller 91. .91 is conveyed from the delivery position P4 to the take-out position P5. The pallet 5b loaded with a predetermined amount of press-formed parts 2b is then taken out at the takeout position PS. Further, when the pallet 5a loaded with a predetermined amount of press-formed parts 2a is transported to the take-out position P5, it is taken out at the take-out position P, and the pallet 5a loaded with half the predetermined amount of press-formed parts 2a is taken out. When transported to position P, pallet 5a
Do not remove the

The pallet mounting plate 52 from which the pallet 5b has been taken out at the take-out position P5, and the pallet 5a from which the pallet 5a has been taken out or loaded with half the predetermined amount of press-formed parts 2a.
The pallet mounting plate 52 left as is is the lifting frame 8.
6 is lowered to be placed on the chains 74, 74 of the second transfer conveyor 44, and is transported by the second transport conveyor 42 to the feeding position P6.

At the feeding position P6, an empty pallet 5b is newly placed on the pallet mounting plate 52 from which the barre 5b has been taken out at the take-out position PS. Furthermore, when the pallet 5a is being taken out at the take-out position PS, an empty pallet 5a is newly placed on the pallet placement plate 52, and a pallet 5a loaded with half of the predetermined amount of press-formed parts 2a is placed on the pallet placement plate 52. When the pallet mounting plate 52 is transported to the feeding position P6, the pallet mounting plate 5 of the new pallet 5a is
No supply is made on 2.

The pallets 5a and 5b at the feeding position P6 are moved by the moving platforms 49a+, 49a,; 49b, of the first conveyor 41.
, 49bl has returned to the delivery position P3, the lifting frame 76 is raised and the pallet mounting plate 52 is placed on the transfer roller 78, and each transfer is performed with the transfer rollers 78 and 81 at the same level. By driving the loading rollers 78, 81, each moving table 49a+, 49 is transported to the receiving position P3.
a+; By raising the support pins 53 of 49b+ and 49b1, each moving platform 49a+, 49a+;
49b+, 49b+.

In this way, the pair of pallet placement plates 52 circulate from the loading position P2 through the delivery position Pa, the take-out position P5, the feeding position P6, and the delivery position P3, and then return to the loading position P2. Furthermore, the pallet 5b loaded with a predetermined amount of press-formed parts 2b at the loading position P2 is taken out at the unloading position Ps, and a new pallet 5b is supplied onto the pallet mounting plate 52 at the feeding position P6. On the other hand, the barre 5a on which half of the predetermined amount of press-formed parts 2a is loaded at the loading position P2 circulates without being taken out until the predetermined amount of press-formed parts 2a is loaded. Therefore, it is possible to cope with the difference in the number of press-formed parts 2a, 2b to be loaded without increasing the number of barrels 5a, 5b. Moreover, the pallets 5a and 5b can be replaced without interrupting the dispensing of the press-formed parts 2a and 2b to the dispensing position P, thereby avoiding the stoppage of the continuous press machine 1 and improving efficiency. can.

C4 Effects of the Invention As described above, according to the present invention, the first press-formed parts arranged in a straight line with the loading position for loading a plurality of mutually parallel press-formed parts onto individual pallets as the central part in the longitudinal direction
A transport conveyor, a second transport conveyor disposed adjacent to the first transport conveyor, and a transfer conveyor provided between both ends of the first and second transport conveyors, each of which is located at a loading position. It is configured so that multiple pallets corresponding to multiple press-formed parts arranged in parallel can be conveyed at the same time, so pallets can be conveyed in a circular manner.
By taking out a pallet loaded with press-formed parts of the capacity to load during the circulation transport and feeding a new pallet, press-formed parts can be efficiently transported with as few pallets as possible, and the pallet can be placed at the loading position. By sequentially conveying the pallets, it is not necessary to stop the operation of the press when replacing the pallets, and efficiency can be improved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a cross-sectional plan view of FIG. 1, FIG. 3 is an enlarged view of the main part of FIG. 2, and FIG. A plan view of the device, Fig. 5 is a fixation view taken along the line ■-■ in Fig. 4, Fig. 6 is an enlarged view taken along the ■ arrow in Fig. 4, and Fig. 7 is an expanded cross-section taken along the line 8 is an enlarged perspective view of the pallet, and FIG. 9 is a line diagram showing the locus of press-formed parts when they are loaded onto the pallet. 1...Press machine, 2a, 2b...Press molded parts,
4... Unloading device, 5a, 5b... Pallet, 41.
...first conveyor, 42...second conveyor,
43゜44...Transfer conveyor, 52...Pallet placement plate, P2...Loading position

Claims (3)

[Claims] (1) In a press-formed parts unloading device for loading press-formed parts formed by a press machine onto pallets and transporting them, a loading position for loading a plurality of parallel press-formed parts onto individual pallets. a first conveyor disposed in a straight line with the central part in the longitudinal direction;
A second conveyor disposed adjacent to the conveyor, and a conveyor provided between both ends of the first and second conveyors, each conveyor comprising:
A press-formed parts unloading device characterized in that it is configured to be able to simultaneously transport a plurality of pallets corresponding to a plurality of press-formed parts arranged in parallel at a loading position. (2) Each pallet is placed on a pallet mounting plate that can be transported by each conveyor (1).
) A device for discharging press-formed parts as described in item 2. (3) The first transport conveyor is configured to simultaneously move a plurality of pallets at one end in the longitudinal direction to a loading position and move a plurality of pallets at the loading position to the other end in the longitudinal direction. The press-formed parts unloading device according to item (1), characterized in that: