JP2631292B2 - Pallet loading device for press-formed parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (1) Industrial Application Field The present invention relates to a plurality of press-formed parts which are conveyed from a press machine in parallel to a loading position and wait at the loading position. The present invention relates to a pallet loading device for press-formed parts for individually loading on pallets.

(2) Conventional technology Conventionally, an apparatus for stacking press-formed parts discharged from a press machine on a pallet is disclosed in, for example, Japanese Patent Application Laid-Open No. 61-2244.
No. 9 and JP-A-62-83970.

(3) Problems to be Solved by the Invention However, in the above-described conventional apparatus, the press-formed parts dispensed one by one from a press machine are sequentially loaded on a pallet. But to improve efficiency,
In recent years, press machines have been used to improve the differential speed and simultaneously mold a plurality of types of press-formed parts, and when the above-described conventional one is applied to such a press machine,
Loading means is required for each press-formed part. In view of this, the present applicant has already proposed an apparatus in which a plurality of types of press-formed parts are simultaneously loaded on a plurality of pallets by a common loading means. It is necessary to change the posture. For example, if a bonnet outer and a stiffener, which are components of an automobile body, are formed simultaneously by a press machine, the stiffener hidden inside the automobile can be stacked on a pallet. In addition, the outer bonnet as a vehicle outer panel needs to be stacked on a pallet while maintaining a gap between the outer bonnets so as to avoid damage due to mutual contact. For this reason, when the loading means is operated in accordance with the posture of one pallet molded part during loading by the common loading means, the other pallet molded part is a press molded part on which a new press molded part on the pallet is loaded. May be damaged due to interference, and in order to avoid such interference, the operation of the loading means must be complicated, and the operation speed is reduced.

The present invention has been made in view of such circumstances,
An object of the present invention is to provide loading information of a press-formed part which can simplify the operation of a common loading means while avoiding mutual interference when loading a plurality of types of pressed parts on a corresponding pallet. And

B. Configuration of the Invention (1) Means for Solving the Problems According to the present invention, in order to achieve the above object, a plurality of types of press-formed parts conveyed from a press machine to a loading position in parallel are loaded into a loading position. A pallet loading device for press-formed parts for individually and mutually different loading postures on a plurality of pallets waiting at a loading position, wherein a plurality of pallets waiting in parallel corresponding to each press-formed part at a loading position. And a plurality of support bases for individually and variably moving the upper and lower relative positions of each other, and common loading means for simultaneously holding a plurality of types of press-formed parts and loading each pallet, The loading means is provided for each of a plurality of types of press-formed parts, and can hold the press-formed parts detachably, respectively, and perform the holding operations independently of each other. A plurality of fingers that can be released by a finger, and a drive mechanism that drives the fingers so as to be able to rotate integrally about a predetermined rotation axis and to move horizontally in a predetermined direction. Even if the held fingers are integrally driven by the driving mechanism, the timing for releasing the holding operations of the fingers is shifted, and the fingers are rotated at least integrally during the driving, so that the vertical relative positions are changed. In addition, a plurality of types of press-formed parts can be stacked on a plurality of pallets in mutually different loading postures.

(2) Operation In order to simplify the operation of the loading means common to all the pallets at the time of loading, even if a plurality of fingers each holding a press-formed part are driven integrally by a driving mechanism, By shifting the timing of releasing the holding operation and at least rotating the plurality of fingers at the same time to change the position of the press-formed part, the plurality of types of press-formed parts on the plurality of pallets have different postures from each other. And can be loaded without difficulty. Moreover, at the time of loading, the plurality of pallets can be made to stand by at the loading position with their upper and lower relative positions being different, so that the press-formed parts already loaded on the pallets and the newly loaded components are loaded there. Interference with press-formed parts can be reliably avoided.

(3) Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, in FIG. 1 and FIG.
In a plurality of, for example two by simultaneously press-molded press-molded parts 2a, 2b is parallel with the dispensing simultaneously dispensing position P1, sequentially conveyed to the position P ₂ loading from the payout position P _1. Press forming parts 2a reaching the loading position P _2, 2b
Are loaded onto the pallets 5a and 5b on the unloading device 4 by the loading robot 3 as a single loading means, and are unloaded by the unloading device 4.

In the continuous press machine 1, a plurality of processing stations S _n , S _n-1 ,... Are set at equal intervals along the transport direction 6 and cooperate with the processing stations S _n , S _n-1 ,. 7a _n , 7a _n-1 , ..., 7b _n , 7b _n-1 , ... and upper molds 8a _n , 8a _n-1 , ..., 8b _n , 8b _{n- 1} ,... Are arranged in two sets. Moreover, each upper die 8a _n , 8a _n-1 , ..., 8b _n , 8b _n-1 , ...
Is fixed to an elevating platform 10 that is supported by the supporting platform 9 in a stackable manner.

The continuous pressing machine 1 is provided with a transfer means 11 for sequentially transferring the plate material between the processing stations S _n , S _n−1 ,. The transfer means 11 includes a pair of transfer bars 12, 12 arranged on both sides of the processing stations S _n , S _n−1 ,... In parallel with the transfer direction 6, and a plurality of bridges extending between the transfer bars 12, 12. Arm 13 and each arm 13 for detachably holding the plate material and the press-formed parts 2a, 2b.
And a handling mechanism 14 provided respectively.

The transfer means 11 includes lower dies 7a _n , 7a _n-1 ,..., 7b _n , 7b _n-1 ,
And the upper die 8a _n , 8a _n-1 ,..., 8b _n , 8b _n-1 ,..., The arm 13 and the handling mechanism 14 wait between the processing stations S _n , S _n-1 ,. At last, upper die 8a _n , 8a
_{n-1, ..., 8b n} , 8b n-1, the ... ascent of adjacent processing stations S _n, can be sequentially conveying the sheet material over S _n-1, ... between. The processing station S _n is press-molded with a press-molded part 2a of the foremost end along the conveying direction 6, 2b
Is processing station S _n, the S _n-1, ... and the payout position P ₁ set in front of the processing station S _n at the same spacing, it is discharged by the conveying means 11.

The transfer means 4 is a continuous press machine 1 along the transfer direction 6.
Of which extends in the direction perpendicular to the conveying direction 6 so as to cross the loading position P ₂ set in the forward position, a payout position P ₁ and loading position P ₂ is a straight line along the conveying direction 6 Is set to

Referring also to FIG. 3, over the between payout position P ₁ and loading position P _2, and frame 19 of the short form is arranged which is supported on the floor via the supporting legs 20, the frame body On 19, a transport pallet 15a on which a press-formed part 2a can be placed
When the press-molded part 2b and a can be placed transport pallet 15b is arranged as capable of reciprocating between the payout position P ₁ and loading position P ₂ with a variable mutual spacing.

On the frame 19, a traveling vehicle 17 having wheels 16 that can roll on both sides of the frame 19 is mounted, and the pair of transport pallets 15a and 15b are placed on the traveling vehicle 17 mutually. Are arranged at variable intervals. Also on both sides of the frame 19, a drive sprocket 21 of the payout position P ₁ side, and the loading position P ₂ side of the driven sprocket 22 are rotatably supported in pairs, respectively, provided in a lower portion of the frame 19 A drive shaft connected to the output shaft of a forward / reverse rotatable motor 24 fixedly disposed on a support plate 23
25 is connected to both drive sprockets 21,22. In addition, a chain 26 is wound between the two driving sprockets 21 and both driven sprockets 22, and the chains 26, 26 are connected to the traveling carriage 17, respectively. Therefore the traveling vehicle 17 by the operation of the motor 24 is reciprocally moved between payout position P ₁ and loading position P _2. Moreover, the frame
At the end of the end and loading position P ₂ side of the payout position P ₁ side in 19, the transport pallet 15a, contact may stoppers 27 and 27 are fixed in pairs respectively 15b.

Two pairs of guide rods 28a, 28b, 28c extending from both sides of the traveling carriage 17 to the center in the width direction are fixed to the traveling carriage 17, and both transport pallets 15a, 15b are connected to the respective guide rods 28a, 2b.
It is movable along 8b. Further, a cylinder 29 is supported and fixed below the traveling carriage 17 at a position corresponding to each of the transport pallets 15a and 15b. These cylinders 29 are fixed to the lower portions on both sides of the traveling carriage 17 in parallel with the guide rods 28a, 28a; 28b, 28b, and the piston rods 30 of the cylinders 29 correspond to the corresponding transport pallets 15a, 15
b. Therefore, by causing each cylinder 29 to expand and contract, the distance between the two transport pallets 15a and 15b increases or decreases.

The loading position P _2, the support frame 31 is fixed arranged,
A pair of guide rails 32, 32 extending in parallel with the transport direction 6 are arranged on the upper part of the support frame 31, and the loading robot 3 is capable of reciprocating along these guide rails 32, 32.
Is fixed.

The loading robot 3 includes a movable body 33 movable along a pair of guide rails 32, 32, and a rotating arm 35 whose base end is rotatably supported by a support arm 34 hanging down from the movable body 33.
And fingers 36a, 36 rotatably supported at the tip of a rotating arm 35 for detachably holding the press-formed parts 2a, 2b.
b.

At the lower end of the support arm 34, the base end of the turning arm 35 is rotatably supported via a horizontal first turning shaft 37 orthogonal to the transport direction 6, and the tip of the turning arm 35 is A second rotation shaft 38 extending on both sides of the rotation arm 35 in parallel with the one rotation 37 is rotatably supported. Fingers 36a and 36b are provided at both axial ends of the second rotating shaft 38, respectively.
6a and 36b are provided with suction cups 39 for detachably holding the press-formed parts 2a and 2b, respectively.

According Such loading to the robot 3, press-molded parts 2a which has been conveyed to the position P ₂ loading parallel and simultaneously, the press-molded part 2a with grasping 2b simultaneously unloading device upper 4 while changing the attitude of 2b Pallets 5a and 5b
Can be loaded on top. Thus, the guide rail 32,
The moving body 33, the rotating arm 34, and the two rotating shafts 37, 38 can cooperate with each other to integrally rotate the fingers 36a, 36b around the predetermined rotating shafts 37, 38 and to move horizontally in the predetermined direction. The driving mechanism D of the present invention, which is driven so as to obtain, is constituted.

4, 5, 6, and 7, the unloading device 4 has a pallet 5 a on a straight line extending in a horizontal direction orthogonal to the transport direction 6 with the loading position _P2 as a central portion in the longitudinal direction. , 5b, and a second conveyor 42 arranged parallel to the first conveyor 41 on the opposite side of the continuous press machine 1 with respect to the first conveyor 41.
When the first and end between the palette 5a of the second conveyor 41, the first and second transfer conveyors 43 and 44 for transmitting and receiving 5b, first conveyor corresponding to the loading position P ₂ A pair of support bases 45a arranged at the longitudinal center of the conveyor 41,
45b.

The first conveyor 41, on a horizontal straight line passing through the position P ₂ loading perpendicular to the conveying direction 6, is disposed between the receiving position P ₃ and the delivery position P ₄ where the laminate included position P ₂ and the center position shall be, wherein each press-molded parts 2a, 2b and can each placed separately pair of pallets 5a, the 5b, receiving position P ₃
And it can be transported loading between positions P ₂ and at a position P ₂ and a delivery position P ₄ stowage.

The first conveyor 41 includes a frame 46 fixedly provided on the floor surface over between the receiving position P ₃ and the delivery position P _4, a rail 47 which is fixed in parallel on both sides the upper portion of said cross-table 46,
Rails 48, 48 fixed parallel to the other lower side of the gantry 46,
A pair is formed on both sides of the gantry 46, and the rails 47, 48; 4
Four sets of movable tables 49a ₁ , 49a ₁ ; 49b ₁ , 4 movable along 7,48
9b ₁ ; 49a ₂ , 49a ₂ ; 49b ₂ , 49b ₂ and each carriage 49a ₁ , 49a ₁ to 49
a driving means 50 for reciprocatingly driving the b ₂ , 49b ₂ along the rails 47, 48;

Moving base 49a disposed on both sides of the frame _{46 1, 49b 1, 49a 2} , 49b
₂ ; 49a ₁ , 49b ₁ , 49a ₂ , 49b ₂ are connected to each other by a connecting member 51, and therefore, each of the moving tables 49a ₁ , 49a ₁ ; 49b ₁ , 49b ₁ ; 49a ₂ , 49a
₂ ; 49b ₂ , 49b ₂ move integrally. Moreover, the loading position P
Movement when moved to the ₂ stage 49a _1, 49a ₂ is integrating inclusive position P ₂
Position corresponding to the press-formed part 2a
49b _1, 49b ₂ as a position corresponding to the press-molded part 2b which is in the position P ₂ loading, the moving stand _{49a 1, 49b 1, 49a 2} , 49b
₂ is arranged.

Moving tables 49a ₁ , 49a ₁ ; 49b ₁ , 49b ₁ ;
Pallet mounting plates 52 on which pallets 5a and 5b can be mounted are mounted on 49a ₂ and 49a ₂ ; 49b ₂ and 49b ₂ , respectively.
The pallet placing plate 52 is provided with a support hole 59 at a portion corresponding to each vertex position of the virtual quadrilateral, and each of the moving tables 49a ₁ , 49a ₁ ; 49b ₁ , 49b ₁ ; 49b ₁ ; 49a ₂ , 49a ₂ ; 49b ₂ , 49b ₂
A pair of support pins 53,5 for supporting the pallet mounting plate 52 by fitting into the support holes 59 of the pallet mounting plate 52 from below.
3 is arranged to be movable up and down. These support pins 53 and 53, each of the mobile platform _{49a 1, 49a 1; 49b 1} , 49b 1; 49a 2, 49a 2; 4
9b ₂ , 49b ₂ are slidably fitted to guide cylinders 54, 54 provided on 49b ₂ . In addition, the lower ends of the support pins 53
5,55, and the other end of the first link 55,55 is the second
Is connected to one end of a link 56, 56, moving table 49a ₁ and the other end of the second link 56 in the lower position than the support pins 53 and 53 on the axis extended line of the support pins 53, 53, 49a _1; 49b ₁ , 49b ₁ ; 49a ₂ , 49a ₂ ; 49
It is pivoted on b ₂ , 49b ₂ . The first link 55, 55 and the second link
The connecting point of the link 56, third link 57 which extends in the longitudinal direction of the rail 47, 48 are connected, the moving stand 49a _1, 49a _1; 49
The third links 57 of b ₁ , 49b ₁ ; 49a ₂ , 49a ₂ ; 49b ₂ , 49b ₂ are coaxially connected to each other. In addition, the carriages 49b ₂ and 49b ₂
A first lifting / lowering cylinder 58 connected to the third link 57 is provided, and each of the moving tables 49a ₁ , 49a ₁ ; 49b ₁ , 49b ₁ ; 49a ₂ , 49a ₂ ; 49b ₂ , 4
Support pins 53 and 53 9b ₂ is lift operates synchronously.

The driving means 50 includes a moving table 49 arranged on one side of the gantry 46.
a ₁ and, 49b _1, 49a _2, a rack 60 which is fixed to 49b _2, the other moving stand is disposed side _{49a 1, 49b 1, 49a 2} , 49b 2 crack 60 that is fixed to the frame 46 , Pinion 6 meshing with both racks 60,60
And 1, 61, and a reversible drive motor 62 which is connected to both the pinion 61, the drive motor 62 is fixedly arranged to the frame 46 at a position corresponding to the delivery position P _4.

According to the driving means 50, the moving tables 49a ₁ and 49a ₁ ; 49b ₁ and 49b
₁ is reciprocated between the receiving position P ₃ and loading position P _2, the mobile platform 49a _2, 49a _2; is reciprocally driven between 49b _2, 49b ₂ are loading position P ₂ and delivery position P _4.

Support table 45a is movable up and down disposed in a position P ₂ frame 46 in correspondence with the press forming part 2a with loading, support 45b is in response to the press molded part 2b at a position adjacent to the support table 45a cradle It is arranged to be able to move up and down at 46. These supports 45a,
The 45b is provided with four support pins 64 capable of supporting the pallet mounting plate 52 by being fitted from below support holes 63 formed at respective apexes of the virtual quadrilateral in the pallet mounting plate 52. You. The upper ends of four vertically extending guide rods 65 are connected to the support bases 45a and 45b, respectively.
Numeral 65 is slidably fitted to four guide cylinders 66 fixed to the gantry 46. Further, a second lifting cylinder 67 having an axis extending vertically is fixed to the gantry 46 at a position corresponding to the center of the support bases 45a and 45b, and the upper end of the piston rod 68 in each second lifting cylinder 67 is fixed. Is the support base 45a, 45
Connected to b. Accordingly, the support bases 45a and 45b are moved up and down while being guided by the guide cylinder 66 in accordance with the expansion and contraction operation of the second elevating cylinder 67, so that the amount of expansion and contraction of the second elevating cylinder 67 is made different from each other. The vertical relative positions of the stands 45a and 45b can be adjusted.

The second conveyor 42, over a period of the take-out position ₅ corresponding to the position P ₆ and delivery position P ₄ infeed corresponding to the receiving position P _3, the first conveyor 42 on the opposite side of the continuous press 1 They are arranged adjacent to each other and take out position P ₅
And cradle to be fixed on the floor surface over infeed position P ₆
70, a pair of left and right driven sprockets 71, 71 is pivotally supported to the frame 70 at the end of the take-out position P ₅ side, a pair of left and right driving sprockets which are rotatably supported to the frame 70 at the end of the infeed position P ₆ side
72, 72, and a driving sprocket 72,
A drive motor 73 is connected to the drive sprocket 72, and a pair of left and right endless chains 74, 74 wound around the drive sprocket 72 and the driven sprocket 71. On both chains 74, 74, a pallet placing plate 52 can be placed.
The pallet mounting plate from the take-out position P ₅ to the position P ₆ infeed
52 can be transported.

The side upper end of the frame 70 at an intermediate portion between the unloading position P ₅ and infeed position P ₆ of the first conveyor 41 side, a plurality of guide rollers 75 for guiding the one side of the pallet mounting plate 52 There is journalled, the first transfer conveyor 41 over between the opposite side of the take-out position P ₅ and infeed position P ₆ on the side upper end of the frame 70, pallet mounting other side a for guiding the plate 52 A plurality of guide rollers 75 are pivotally supported.

The first moving conveyor 43, accepted the position from the position P ₆ infeed
A conveyor for simultaneously transferring a pair of pallet mounting plate 52 in parallel to each other in P _3, a lifting frame 76 arranged in the second conveyor 42 side, solid to the frame 46 of the first conveyor 41 A fixed frame 77 to be installed and a pair of parallel pallet mounting plates
A plurality of transfer rollers 78 which are arranged in three rows so as to simultaneously transport the pallets 52 and are supported by a lifting frame 76, respectively. A guide roller 79 which is supported by the respective rollers 76, and a motor 80 which is disposed on the lifting frame 76 to rotationally drive the transfer rollers 78.
And a plurality of transfer rollers 81, which are arranged in three rows to be simultaneously conveyed to a pair of parallel pallet placing plates 52 and are respectively supported by fixed frames 77, and guide both side portions of the pair of pallet placing plates 52. Guide rollers 82 that are arranged in three rows to be supported by a fixed frame 77, a motor 83 that is disposed on the fixed frame 77 to rotationally drive the transfer rollers 81, an elevating frame 76, and a fixed frame.
A free roller 84 is provided between the transfer rollers 77 so as to correspond to the transfer rollers 78 and 81.

Fixed frame 77, No置Ru pallet mounting plate 52 on the transfer roller 81 which is pivotally supported, the mobile platform 49a _1, 49a _1; the 49b _1, 49b in which a support pin 53 which is provided on _one outermost The first transport conveyor 41 is positioned above the upper end when it is at the lower limit position.
Is fixed on a gantry 46. The free roller 84 is arranged at a fixed position at the same level as the transfer roller 81. Further, the lifting frame 76 can be raised and lowered by lifting driving means 85 such as a cylinder provided between the floor and the floor. When the lifting frame 76 is at the lowermost position, each transfer roller 78 is connected to the second transport conveyor.
It is located below the pallet placing plate 52 placed on the 42 chains 74,74.

According to the first transfer conveyor 43, the motors 80 and 83 are operated in a state where the lifting frame 76 is raised and the transfer roller 78 is at the same level as the transfer roller 81, so that a pair of parallel pallets is the mounting plate 52 may be from infeed position P ₆ of the second conveyor 42 is disposed in receiving position P ₃ of the first conveyor 41.

The second transfer conveyor 44, the take-out position from the transfer position P ₄
A conveyor for simultaneously transferring a pair of pallet mounting plate 52 in parallel to each other P _5, a lifting frame 86 arranged in the second conveyor 42 side, solid to the frame 46 of the first conveyor 41 A fixed frame 87 to be installed and a pair of pallet mounting plates
A plurality of transfer rollers 88 which are respectively supported in three rows so as to be conveyed simultaneously in the three rows so as to convey the two pallet mounting plates 52 in parallel. A guide roller 89 which is supported by a bearing 86, and a motor 90 which is disposed on an elevating frame 86 to rotationally drive the transfer rollers 88.
And a plurality of transfer rollers 91 which are arranged in three rows to be simultaneously conveyed to the pair of parallel pallet placing plates 52 and are supported by the fixed frame 87, respectively, and guide both sides of the pair of pallet placing plates 52. Guide rollers 92 which are arranged in three rows so as to be rotatably supported by the fixed frame 87, a motor 93 which is disposed on the fixed frame 87 for rotating the transfer rollers 91, a lifting frame 86 and a fixed frame.
A free roller 94 is provided between the 87 and 88 corresponding to each of the transfer rollers 88 and 91.

Fixed frame 87, the pallet mounting plate 52 rests on the transfer roller 91 which is pivotally supported, the mobile platform 49a _1, 49a _1; the lower limit position of 49b _1, are provided in 49b ₁ support pins 53 Is fixed on the gantry 46 of the first conveyor 41 so as to be located above the upper end of the first conveyor. The free roller 84 is a transfer roller.
It is located at the same level as 91 and in a fixed position. Further, the lifting frame 86 can be moved up and down by lifting driving means (not shown) such as a cylinder provided between the floor and the floor. When the lifting frame 86 is at the lowest position, each transfer roller 88 is It is located below the chains 74, 74 of the two-conveyor 42.

According to the second transfer conveyor 44, the motors 90 and 93 are operated in a state where the lifting frame 86 is raised and the transfer roller 88 is at the same level as the transfer roller 91, so that a pair of parallel pallets is the mounting plate 52 from the delivery position P ₄ of the first conveyor 41 can be transferred to the take-out position P ₅ of the second conveyor 42.

In FIG. 8, a pallet 5a is formed for stacking and placing a press-formed part 2a such as a stiffener, for example, and a pallet 5a is placed on a placing plate 96 which can be placed on the pallet placing plate 52. A regulating rod 97 for defining the periphery of 2a is provided upright. The pallet 5b is formed so that the press-formed parts 2b such as the bonnet outer are separated and placed in the axial direction so that they are in a vertical posture, and the pallet 5b can be placed on the pallet placement plate 52. Plate 98 and molded part 2b of each press
Substantially U-shaped frame provided on the mounting plate 98 to define the side edge of
99 and the above-mentioned frame 99 to separate the press-formed parts 2b from each other.
And a plurality of separation plates 100 fixedly mounted on the base plate.

Further, on one pallet 5a, since the press-formed parts 2a are stacked on top of each other, it is possible to load the press-formed parts 2a which is a multiple of the load amount of the press-formed parts 2b on the other pallet 5b. For example, while 100 press-formed parts 2a can be stacked on the pallet 5a, 50 press-formed parts 2b can be stacked on the other pallet 5b.

Next, the operation of this embodiment will be described. A pair of press-formed parts 2a, 2b pressed by the continuous press 1 is described.
It is simultaneously paid out to the payout position P ₁ in parallel by a conveying means 11. In this case both the transport pallets 15a, 15b are press-molded parts 2a payout position P _1, the interval of both 15a corresponding to the spacing between 2b, stands by the payout position P ₁ is opened between 15b, the press-forming The components 2a, 2b are placed on the respective transport pallets 15a, 15b.

Each of the transport pallets 15a and 15b on which the respective press-formed parts 2a and 2b are placed, respectively, is dispensed at a payout position P by the traveling of the traveling carriage 17.
While moving from ₁ to loading position P _2, the transport pallet 15a, 15 by allowed to operate the cylinder 29 in the middle of the conveyor
b is is spread apart mutually, when reaching the loading amount P ₂ are both transport pallets 15a, the distance between 15b, the support base 45a, 45b
It corresponds to the interval between them.

Press forming parts 2a in this manner payout position P _1, the two support table 45a at intervals and loading position P ₂ between 2b, two transport pallets 15a to correspond to the spacing between 45b, while changing the interval 15b, payout position P ₁ and loading the press molded part 2a between the position P _2, 2b by which is adapted to convey a loading position P
₂ can contribute to the simplification of the structure and operation of the loading robot 3.

On the other hand, in the first conveyor 41 of the unloading device 4, the moving table
_{49a 1, 49a 1; 49b 1} , 49b 1 are in the receiving position P _3. Moreover the receiving position the movable carriage 49a ₁ in P _3, 49a _1; in 49b _1, 49b ₁ is placed pallet mounting plate 52, respectively, their moving base 49
a ₁ , 49a ₁ ; Pallets 5a, 5b are placed on the pallet placing plate 52 on 49b ₁ , 49b ₁ , respectively. At this time, mobile platform 4
_{9a 2, 49a 2; 49b 2} , 49b 2 is located at the loading position P _2, the support base
The moving platform 49a ₂ , 49a ₂ ; 4
The pallet placing plates 52 on 9b ₂ and 49b ₂ are
The pallets 5a and 5b are placed on the pallet placing plates 52, respectively. By varying the amount of rise of the support base 45a, 45b moreover, the loading position P _2, as shown in FIG. 8, towards the pallet 5b is as in by a height h higher than the pallet 5a both Pallets 5a and 5b are waiting.

In this state, the loading robot 3 operates, and the two press-formed parts 2a, 2b are loaded on the pallets 5a, 5b while drawing a locus as shown in FIG. That is, each transport pallet 15a by adsorption points P _S by lowering the suction cups 39, press-molded parts 2a are on 15b, 2b is attracted by the suction cup 39, it is held, lifted from the transport pallet 15a, 15b.

Next, the two press-formed parts 2a, 2b move toward the pallets 5a, 5b while changing the posture from the horizontal posture to the vertical posture as shown by the arrow 101 according to the rotation of the fingers 36a, 36b.
Arrow 1 until both press-formed parts 2a, 2b are in a vertical position
When moving horizontally as shown by 02, the fingers 36a and 36b descend, and at the first discharge point _Pb , one of the press-formed parts 2b is sucked by the suction cup 39.
Released from. Furthermore fingers 36a, 36b are above the arrow 102 in opposite directions to move as indicated by arrow 103, the fingers 36a as indicated by the second emission point P _a at the arrow 104, 36b is a press molded part 2a rotates horizontally After the posture is changed to the posture, the press-formed part 2a is released from the suction cup 39.

In this way, on one pallet 5a, the press-formed parts 2a are stacked in a horizontal posture, and the other pallet 5b
The press-formed parts 2b in the vertical posture are stacked with the separation plates 100 interposed therebetween. Moreover, the pallet 5a for stacking the press-formed parts 2a on each other is located at a lower position than the other pallet 5b for loading the press-formed parts 2b in the vertical posture, so that both fingers 36a,
Even if you make 36b perform the same operation, pallet 5a
The press-formed part 2a already mounted on the robot and the newly formed press-formed part 2a do not interfere with each other, and the operation of the loading robot 3 can be simplified.

When the loading amount of the press-formed parts 2b on the pallet 5b reaches a predetermined amount, for example, 50 pieces, the press-formed parts on the pallet 5a are
Each pallet 5a, press forming part 2a to 5b the load of the 2a is at a predetermined amount of even half loading position P _2, 2b loading of ends. That is, a predetermined amount of press-formed parts
When 2b is loaded, both support bases 45a and 45b descend to the lowest position. At position P ₂ loading Thereby, palette 5a, 5
The pallet placing plate 52 on which each of the
a, 45b to the moving table 49a ₂ , 49a _{2 of} the first conveyor 41; 49b ₂ ,
It will be transferred to 49b ₂ .

Therefore, the movement of the first conveyor 41 is started, and
49a ₂ , 49a ₂ ; 49b ₂ , 49b ₂ from loading position P ₂ to delivery position P ₄
And the movable tables 49a ₁ , 49a ₁ ; 49b ₁ , 49b ₁ are received at the receiving position P.
₃ is moved to the loading position P ₂ from. Thus, a pallet 5a loaded with press-molded part 2a by half or a predetermined amount of a predetermined amount to the delivery position P _4, and the pallet 5b loaded with a predetermined amount press forming part 2b is moved and the loading position P ₂
A pallet 5a loaded with press-formed parts 2 by half of a predetermined amount or an empty pallet 5a and an empty pallet 5b
And will move. Therefore, in the delivery position P _4, moving base 49a _2, 49a _2; 49b _2, 49b ₂ of the support pin 53 is lowered, the pallet 5a, 5b are placed on the transfer roller 91 of the second conveyor 44. Also the loading position P _2, the supporting first 45a, 45b is elevated palette 5a, the pallet mounting the 5b mounting plate 52, each support base 45a, rests in 45b. Thereafter, the first conveyor 41, moving table _{49a 2, 49a 2; 49b 2} , 49b 2 returns to the position P ₂ loading, moving stand 49a _1, 49a _1; return to 49b _1, 49b ₁ is receiving position P ₃ . Moreover rising operation of such actuation and support base 45a of the first conveyor 41, 45b is newly loading position P ₂ press molded parts 2a, 2b is performed until conveyed.

The pallet placing plate 52 placed on the transfer roller 91 of the second transfer conveyor 44 raises the elevating frame 86 to bring the transfer roller 88 to the same level as the transfer roller 91, and then moves the transfer roller 8
It is transported to the take-out position P ₅ from the transfer position P ₄ by rotating the 8,91. Thus, a predetermined amount of the press-formed part 2b
Pallet 5b loaded with is taken at the pickup position P _5.
Further, when the pallet 5a loaded with a predetermined amount of press-molded parts 2a came conveyed to the take-out position P ₅ takes out position P ₅
In taken out and does not take out the pallet 5a when the pallet 5a loaded with a predetermined amount of half of the press-molded part 2a it came conveyed to the take-out position P _5.

A removal position P ₅ pallet mounting plate 52 taken out of the pallet 5b, the pallet 5a and palletization plate 52 as it left the or a predetermined amount of a half of the press-molded part 2a stacked pallet 5a taken the , by lowering the lifting frame 86 placed on the chain 74, 74 of the second transfer conveyor 44 is conveyed to the infeed position P ₆ by the second conveyor 42.

In infeed position P _6, pallet 5b on the pallet mounting plate 52 in a state of being taken out of the pallet 5b at the pickup position P ₅ it is newly mounted. Also when the pallet 5a at the pickup position P ₅ is removed is pallet mounting plate 52 newly mounted empty pallets 5a is on, a predetermined amount of half of the press-molded part
, The new pallet when the pallet mounting plate 52 2a put the pallet 5a was loaded came is conveyed to the position P ₆ infeed
5a is not supplied onto the pallet placing plate 52.

Pallet 5a in the position P ₆ infeed, 5b is moving stand 49a _1, 49a ₁ of the first conveyor 41; when 49b _1, 49b ₁ came back to the transfer position P _3, raising the lift frame 76 Transfer roller at least
78 on placing the pallet mounting plate 52, is conveyed to the receiving position P ₃ by driving the transfer rollers 78 and 81 a transfer roller 78, 81 in a state where the same level, the mobile platform 49a _1, 49a ₁ ;
By allowed to increase the support pins 53 of 49b _1, 49b _1, each mobile platform 49a _1, 49a _1; rests on 49b _1, 49b _1.

In this way, circulated back from the position P ₂ loading a pair of pallet mounting plate 52 delivery position P _4, the take-out position P _5, a position P ₂ loading through the position P ₆ and the delivery position P ₃ infeed . A predetermined amount of press-molded parts 2b Low loading position P ₂
There pallet 5b to be mounted is removed by the take-out position P _5,
New pallet 5b is supplied onto the pallet mounting plate 52 at the position P ₆ infeed. On the other hand, loading pallets 5a a predetermined amount of half of the press-molded part 2a are stacked at the position P _2, the predetermined amount of press-molded part 2a is circulated without being taken up and stacked. Therefore, it is possible to cope with the difference in the number of loaded press-formed parts 2a, 2b without increasing the number of pallets 5a, 5b. Moreover palette 5a, the conversion of 5b, press-molded parts 2a to payout position P _1, can be done without interrupting the dispensing of 2b, it is possible to improve the efficiency by avoiding the shutdown of the continuous press 1 it can.

C. Effects of the Invention As described above, according to the present invention, in order to simplify the operation of the loading means when loading a plurality of types of press-formed parts on a plurality of pallets, a plurality of fingers each holding the press-formed parts. Even when the driving mechanism is integrally driven, the timing for releasing the holding operation of the plurality of fingers is shifted, and at the same time, the plurality of fingers are rotated at least integrally to change the attitude of the press-formed part, A plurality of types of press-formed parts can be stacked on a plurality of pallets in different loading positions without difficulty, thus simplifying the operation of the loading means (and thus simplifying the configuration of the loading device) and improving the efficiency of the loading operation. And can be achieved simultaneously. In addition, in the above-mentioned loading, a plurality of pallets can be made to stand by at the loading position with their upper and lower relative positions being different, so that the press-formed parts already loaded on the pallets and the press newly loaded there are Interference with a molded part can be reliably avoided.

[Brief description of the drawings]

1 is a side view, FIG. 2 is a cross-sectional plan view of FIG. 1, FIG. 3 is an enlarged view of a main part of FIG. 2, and FIG. FIG. 5 is a plan view taken along line VV of FIG. 4, FIG. 6 is an enlarged view taken along line VI of FIG. 4, FIG.
FIG. 5 is an enlarged sectional view taken along the line VII-VII of FIG. 5, FIG. 8 is an enlarged perspective view of the pallet, and FIG. 9 is a diagram showing a locus when the press-formed parts are loaded on the pallet. 1 ... press machine, 2a, 2b ... press-formed parts, 3 ... loading robot as loading means, 5a, 5b ... pallet, 36a, 36b ... finger, 45a, 45b ... support base, D ...
Drive mechanism, P ₂ … Loading position

Continuation of the front page (72) Inventor Takeshi Ken Tashiro 1-10-1 Shinsayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. (56) References Japanese Utility Model sho 59-165739 (JP, U) Japanese Utility Model Sho 61- 62723 (JP, U)

Claims (1)

(57) [Claims] 1. A plurality of types of press-formed parts (2a, 2) conveyed from a press machine (1) in parallel to a loading position (P ₂ ).
The b), loading a plurality of pallets waiting at the position (P ₂₎ (5
a, 5b) is a pallet loading device for press-formed parts to be loaded individually and with different loading postures. The loading position (P ₂ ) corresponds to each press-formed part (2a, 2b) A plurality of pallets (5a, 5b) that stand in parallel and stand by each other, and a plurality of support tables (45a, 45b) on which the relative positions of the pallets are variable, and a plurality of types of press-formed parts (2a,
2b) is provided with a common loading means (3) for simultaneously holding and loading each pallet (5a, 5b), and the loading means (3) is provided with a plurality of types of press-formed parts (2a, 2b). ), A plurality of fingers (36a, 36b) capable of detachably holding the press-formed parts (2a, 2b) and releasing their holding operations at independent timings, respectively. Finger (3
6a, 36b), and a driving mechanism (D) for driving integrally rotatable about predetermined rotation axes (37a, 37b) and horizontally movable in a predetermined direction, and a press-formed part (2a, 2b ) Are held together by the driving mechanism (D) even when the plurality of fingers (36a, 36b) are held together, the timing for releasing the holding operation of the plurality of fingers (36a, 36b) is shifted, and the By rotating the fingers (36a, 36b) at least integrally, a plurality of types of press-formed parts (2a, 2b) can be stacked on different pallets (5a, 5b) with different vertical positions in different lamination postures. A pallet loading device for press-formed parts, wherein the pallet can be deposited.