JPS6323373Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a pallet loading device for pressed products,
In particular, it relates to a device for flatly stacking plate-shaped pressed products on a pallet.

Conventional technology and its problems This type of device, for example,
As disclosed in Publication No. 22448, a product receiving member that approaches and moves away from the conveyor is provided directly below the forward end of the conveyor, and the receiving member is placed at a stop position where the receiving member approaches the conveyor. It is equipped with an elevating body directly above the elevating body, an adsorbent having a groove with an inverted V-shaped lower surface is attached to the lower end of the elevating body, and a traveling pallet is arranged directly below the receiving member. Are known. According to this method, products can be stacked on a pallet in a plurality of stages, but since the products overlap each other, there is a problem that the products may be damaged.

In addition, Japanese Patent Publication No. 55-21693 discloses a crane that runs on a crane rail, and a pair of lifting and lowering devices are telescopically provided at both ends of the crane frame, and a panel gripping device is attached to the lower part of this lifting and lowering device. In the conveyance device, each sprocket is mounted on a shaft facing the crane machine frame located inside the lifting device, each conveyance chain is wound around each of these sprockets, and the outer periphery of each of these conveyance chains. A panel conveyance system comprising support members pivotally attached to a surface so as to be freely foldable, and capable of horizontally supporting each panel received from the panel gripping device of the lifting device and transporting each panel one by one. An apparatus is disclosed. According to this, the panels can be stacked vertically at intervals using the support members, but in order to transport the panels to a predetermined location, the entire device is transported together with the panels by a crane. Not only does the device become large-scale, but also the transshipment work must be interrupted during transportation, resulting in poor work efficiency.

The object of this invention is to provide a press product pallet loading device that solves the above-mentioned problems.

Means for Solving the Problems The press product pallet loading device according to this invention loads plate-shaped press products on a plurality of product support claws that are vertically spaced apart and undulatingly attached to the columns of a column-mounted box pallet. A product lowering device and a product stacker are arranged vertically in front of a product unloading device that transports products forward from a press in a horizontal position, and the product stacker is larger than the length of the product in the left and right direction. The left and right vertical support members facing each other at intervals, the upper and lower sprockets attached to the opposing surfaces of the support members, the chain hung on the upper and lower sprockets, and the installation interval of the pallet product support claws on the chain are approximately the same. A pallet lifter is placed below the product stacker, and the pallet pillars lift the products supported by the product support claws of the product stacker. The pallet is lifted by the pallet lifter so that it is sandwiched and placed in front and behind it, and
The product is transferred from the product stacker to the pallet by raising the product support claw of the lifted pallet and lowering the product support claw of the product stacker.

Embodiment An embodiment of this invention will now be described with reference to the drawings.

In this specification, front and back refers to the direction in which the product is carried out from the press (indicated by arrow A in Fig. 1), and the side on which the product is fed is referred to as the front, and the opposite side is referred to as the rear. Left and right means facing forward.

The press product pallet loading device includes a product unloading device 11 that forwards and unloads the pressed product M from a press (not shown), and a product lowering and rotation device 12 that is disposed in front of the product unloading device 11 and lowers or rotates the product M. , a product transfer device 13 disposed astride the product unloading device 11 and the product lowering/rotating device 12, receiving the product M from the product unloading device 11, and delivering it to the product lowering/rotating device 12 in a horizontal position; A product stacker 14 disposed below the lowering/rotating device 12 and holding the products M lowered by the product lowering/rotating device 12 sequentially at predetermined intervals in the vertical direction; and a product hanger disposed in front of the product stacker 14. It consists of a device 15.

There are two types of products M, one of which is an automobile roof panel M1, and the other is a side panel M2. A pallet P1 for flat stacking is prepared for the roof panel M1, and a pallet P2 for stacking vertically is prepared for the side panel M2.

A pit 17 extending in the left-right direction is formed on the floor 16 in front of the product unloading device 11. Pitt 1
A pallet lifter 18 is arranged inside the pallet lifter 7.
A flat stacking pallet P1 is placed on top of it. A roller conveyor 19 extending in the front-rear direction is arranged on the floor 18 in front of the pit 17, and pallets P2 for stacking are placed on it. Both pallets P1 and P2 are box pallets with pillars. The flat stacking pallet P1 has four pillars 21 spaced apart from each other in the front and back and left and right. A plurality of product support claws 12 are attached to each pillar 21, as shown in FIG. Support claw 2
2 is able to rise and fall freely, and when its tail is pressed by the knock-out plate 23, its tip protrudes inward from the column 21, and when the pressure from the knock-out plate 23 is released, the support claw 22 returns due to its own weight. Its tip is hidden inside the pillar 21. The stacking pallet P2 has two pillars 24 erected at its front edge. A horizontal rod-shaped product hanger 25 is provided at the upper end of each column 24 and extends rearward therefrom.

A total of four pillars 31 are erected on the floor 16 in front and behind the pit 17 at intervals in the left and right direction. Front and rear beams 32 are respectively extended over the upper ends of the left and right columns 31, and a downwardly opening box-shaped frame 34 is supported by these beams 32 via brackets 33. A rear roof frame 35 and a front roof frame 36 are provided on the outer surfaces of both front and rear walls of the box-shaped frame 34, respectively.

The product delivery device 11 is a belt conveyor installed at a predetermined height from the floor 16, and its front end is inserted between the rear left and right columns 31.

A product holding device 37 is arranged below the front end of the product unloading device 11. The product holding device 37 is
The product M1 is directly stacked on the flat pallet P1 from the product lowering device 12 without using the product stacker 14.
It is used when loading products M1 on the pallet P1, and is equipped with a movable fork 38 that can move forward and backward in order to temporarily receive the product M1 when replacing the pallet P1.

The product lowering/rotating device 12 is mainly used in FIGS. 4 to 8.
As shown in the figure, a crankshaft 41 is installed in the upper part of the box-shaped frame 34 and extends in the left-right direction;
A slide 43 connected to the crankshaft 41 by a connecting rod 42, a framework-like lifting swing frame 45 arranged below the slide 4 and operated by the slide 43, and attached to the lower surface of the lifting swing frame 45. It is provided with a plurality of downward vacuum cups 46. The crankshaft 41 is driven by a motor 47 and a brake clutch 48 mounted on the front roof frame 36. Left and right bifurcated support brackets 49 are provided on the front wall of the box-shaped frame 34 and project diagonally downward in the front, and an elevating swing frame 45 is detachably connected to these at their front edges. The connection structure is shown in FIG. The elevating swing frame 45 has a front protruding ear 5.
0 is provided which is sandwiched between the lower ends of support bracket 49 and between ear 50 and support bracket 49.
A first connecting pin 51 passes through the same end of the bushing 52 through the bushing 52. The first connecting pin 51 is movable in its axial direction. A first fluid pressure cylinder 54 is attached to the inner surface of the same end of the support bracket 49 via a cylindrical attachment member 53, and its piston rod 55 is connected to the first connection pin 51.
The slide 43 and the elevating swing frame 45 are connected to each other by front and rear connecting rods 56, 57. Of the connecting parts between the lifting swing frame 45 and the front and rear connecting rods 50 and 57, the connecting part at the lower end of the lifting swing frame 45 and the rear connecting rod 57 is connected to the second connecting pin 51, as well as the first connecting pin 51 described above. They are removably connected by a connecting pin 58, and the other connecting parts are connected by ordinary horizontal pins. A forked upper protruding ear 59 is provided at the connection portion of the vertical swing frame 45 with the rear connecting rod 57 to sandwich the lower end of the rear connecting rod 57, and the lower end and the ear 59 are connected to the second connecting pin 58.
is penetrated. The movement of the second connecting pin 58 is
By the fluid pressure cylinder 60.

When the slide 43 moves up and down while releasing the connection state by the first connection pin 51 and maintaining the connection state by the second connection pin 58, the elevating swing frame 45 moves up and down accordingly. on the other hand,
When the slide 43 moves up and down while maintaining the connection state by the first connection pin 51 and releasing the connection state by the second connection pin 58, the elevating swing frame 45 rotates about the first connection pin 51 as a fulcrum. In this way, by attaching and detaching both the connecting pins 51 and 58, the operation of the product lowering/rotating device 12 is switched from flat stacking to standing stacking, and vice versa.

Referring mainly to FIGS. 1 and 2, the product delivery device 13 includes left and right lifting heights 62 that move along guide rails 61 provided on the outer surfaces of left and right side walls of a box-shaped frame 34, and each lifting and lowering platform. Two pairs of front and rear swing arms 64 are suspended from the body 62 and have an inwardly protruding water closing portion 63 at the lower end.
and the left and right product take-up conveyors 65 placed astride the horizontal portions 63 of the front and rear pair of swing arms 64, and the product M to be completely floated from the product delivery device 11 to the product take-up conveyor 65. It also includes a subcarrier 66 that transports the vehicle while lifting it. Below the elevating body 62 on the outer surfaces of both left and right side walls of the box-shaped frame 34, a hydraulic cylinder 67 for operating the elevating body is attached vertically upward. A horizontal rail 68 extending in the left-right direction is provided on the lower surface of the elevating body 62, and a sliding member 69 is attached to this. The swinging member 69 is provided with a horizontal hanging shaft 70 extending in the front-rear direction, and the upper end of the swing arm 64 is attached to this. A hydraulic cylinder 71 for arm actuation is attached to the sliding member 69. The product take-off conveyor 65 is an electric steel belt conveyor. When the elevating body 62 is at the lower limit of its elevating stroke, the conveying surface of the take-up conveyor 65 is flush with that of the product discharging device 11. Pick-up conveyor 6
Fluid pressure cylinders 72 for aligning and positioning are attached at a plurality of appropriate locations around 5. Subcarrier 6
6, with reference to FIGS. 1, 7 and 8,
Front and rear sprockets 73 and 74 are arranged below the center of the box-shaped frame 34 and below the rear end of the rear roof frame 35, a chain 75 that is hung on these sprockets 73 and 74, and a carrier that is attached to the chain 75. A main body 76;
It consists of a product lifting hydraulic cylinder 78 which is attached vertically downward to the carrier body 76 and has a vacuum cup 77 attached downwardly to the lower end of the rod. A guide groove 79 is provided on the upper surface of the carrier body 76, into which the rear roof frame 3 is inserted.
A guide rail 80 provided on the lower surface of 5 is fitted.

The product stacker 14 includes left and right vertical support members 81, as shown in FIGS. 1 and 2. The support member 81 is attached to the trolley 82 at the middle of its height, and its lower half is attached to the pit 1.
7. The trolley 82 is pit 17
It is placed on rails 83 extending in the left-right direction and laid on both the front and rear edges of the opening. Support member 81
An upper drive sprocket 84 is located at the upper end of the opposing surface, and an upper driven sprocket 85 is located slightly above the middle of its height.
and the lower drive sprocket 86 lined up next to it.
However, two lower driven sprockets 87 are attached to the lower ends thereof at intervals in the front and rear direction. An upper chain 88 is connected to the upper drive sprocket 84 and the upper driven sprocket 85, and a lower chain 89 is connected to the lower drive sprocket 86 and the lower driven sprocket 87, respectively. The upper and lower drive sprockets 84, 86 are individually driven by a motor 90 mounted on the outer surface of the support member 81 through upper and lower reduction clutches 91, 92. And the upper and lower chains 88,8
9 has a large number of product support claws 93 attached thereto. .
As shown in FIG. 12, the product support claw 93 is movable, and when the support claw 93 is on the downward movement path of the chains 88, 89, the support claw 93 is moved by its own weight as shown by the chain line in the figure. I'm leaning towards it. When one support claw 93 stands up, the upright support claw 93 presses the support claw 93 next above it to stand up, and the upright support claw 9
3 supports both left and right edges of the product M.

As shown in FIGS. 1 and 3, the product hanging device 15 includes left and right movable bodies 101 provided on the lower surface of the front roof frame 36 so as to be movable in the left and right direction.
and 1 at intervals in the left and right direction on each movable body 101.
First and second hook carriers 102 and 103 are provided respectively, and first and second hanging hooks 10 and 105 are respectively attached to the first and second hook carriers 102 and 103 so as to be able to swing in the vertical direction. It is equipped with Further, the left and right movable bodies 101 are each equipped with a sub stacker 106. The left and right movable bodies 101 move while being guided by three rails 107 extending in the left and right direction provided on the lower surface of the front roof frame 36, and the left and right movable bodies 101 move according to the size of the product. 101 intervals are adjusted. The two first hook carriers 102 are located outside both the left and right sides of the two second hook carriers 103, and both move while being guided by rails 108 provided on the lower surface of the movable body 101 and extending in the front-rear direction. The structures of both hook carriers 102 and 103 are almost the same, and the first one is representative of both.
The first hook carrier 102 and related items will be explained with reference to FIGS.
is inserted through it, and a hook carrier 102 is attached to its lower movement path. Chain 109 is
It is hung on a rear driven sprocket 110 and a front drive sprocket 111 attached to the lower surface of the front roof frame 36. A total of four chains 109, to which both hook carriers 102, 103 are attached, are individually driven by four pulse motors 112, as shown in FIG. A horizontal shaft 113 is provided at the rear lower end of the hook carrier 102, to which a hook 104 is mounted forwardly near its upper end, and at the upper end of the hook 104 is a hydraulic cylinder 114 mounted rearward to the hook carrier 102. connected.

The sub-stacker 106 includes first and second hook carriers 102, 10, as shown in FIG.
Left and right arm carriers 1 located between 3
15, and left and right product support arms 116 attached to these in a rearward direction. The arm carrier 115 is connected to the hook carriers 102 and 10.
3, it is movable in the front and back direction, and has a chain 117, driven and driving sprockets 11.
8, 119 and a pulse motor 120. An upper horizontal shaft 121 is rotatably provided at the rear lower end of the arm carrier 115. on the other hand,
A lower horizontal shaft 122 is fixed to the base of the arm 116. Both horizontal shafts 121 and 122 have bosses 12.
3,124 are fitted and both bosses 123,12
4 are connected by a rod 125. Furthermore, sprockets 126 and 127 are attached to both ends of both horizontal shafts 121 and 122, respectively, and a chain 128 is hung between the upper and lower pairs of both sprockets 126 and 127. A fluid pressure cylinder 129 is connected to the lower boss 124 and is attached to the front of the arm carrier 115 so as to face forward. This fluid pressure cylinder 1
29, the rod 125 moves to the upper horizontal axis 1.
21 as a fulcrum, and the arm 116 moves accordingly. However, as the rod 125 swings, the upper horizontal shaft 121 rotates, and this rotation causes the sprockets 126, 127 and the chain 128 to rotate.
The rotation is further transmitted to the lower horizontal shaft 122, and the arm 116 rotates together with this. Therefore, the ninth
As shown in the figure, while arm 116 moves between the position shown in solid lines and the position shown in dashed lines, arm 116 is always held in a horizontal position.

Next, the pallet loading work of product M will be explained.

The product unloading device 11 is driven intermittently in response to the processing operation of the press. The product M carried to the front end of the product unloading device 11 is transferred to the subcarrier 6.
The required portion is sucked and lifted by the lifting cylinder 78 of No. 6. This lifting prevents the product M from deforming. Next, when the product carry-out device 11 is driven and the sub-carrier 66 is driven in synchronization with this, the product M is carried forward and transferred from the product carry-out device 1 to the take-up conveyor 65.
transfer to. At this time, the elevating body 62 is at the lower limit position. Then, the product M is positioned at a predetermined position on the take-up conveyor 65 by the positioning cylinder 72. Note that the take-up conveyor 65 is
It is constantly driven, and slips occur between the steel belt and the product M during positioning.
Next, as the elevating body 62 rises, the take-up conveyor 65 is lifted up via the swing arm 64, and the product lowering/rotating device 12 is lifted up at its upper limit position.
The product M
is adsorbed. At this time, the elevating swing frame 45 is located at the lower limit position, and when the delivery to this frame is completed, the elevating body 62 immediately descends, and
As the swing arm 64 rotates outward, the take-up conveyor 65 is retracted from below so as not to interfere with the lowering or rotation of the product M attracted to the lifting swing frame 45 (see the chain line in FIG. 2). ) Now, the product M thus delivered to the product lowering/rotating device 12 will be lowered or rotated. It can be switched like this.

First, a case where the product M is a roof pallet M1 and is loaded on a flat stacking pallet P1 will be described.
The elevating swing frame 45 is a roof panel M1
It descends while adsorbing. The product stacker 14 is
The trolley 82 is arranged so that the chains 88 and 89 are located on both left and right sides of the roof panel M1, and when the elevating swing frame 45 releases the adsorption of the roof panel M1 at its lower limit position,
The same roof panel M1 is placed on the claw 93 of the upper chain 88.
is placed on it. In this way, the claw 93 is attached to the roof panel M.
1, move the upper chain 8 while supporting it.
8 is driven one revolution to move its feed side downward. As a result, roof panel M1
is from the lower end of the upper chain 88 to the lower chain 89.
It is supported by a claw 93 located at the upper end of. The lower chain 89 that has received the roof panel M1 is driven by one pitch of its pawl 93. This results in
The claws 93 supporting the roof panel M1 move downward by one pitch from the upper end while supporting the roof panel M1. Another pawl 93 that has climbed over the upper drive sprocket 84 appears one pitch above this pawl 93, and the next roof panel M1 is attached to this pawl 93.
is supported. In this way, the product lowering rotation device 12
The roof panels M1 sent sequentially by
They are loaded onto Stadka 14 one after another. When a predetermined number of roof panels M1 are stacked on this stacker 14, the roof panels M1 are transferred to a flat pallet P1.

This transfer is performed as follows. The flat stacking pallet P1 is placed on the lifter 18 and lifted. When the pallet P1 is raised, the product support claws 22 are tilted and their tips are hidden within the pillars 21. And palette P1
When the claws 22 are lifted to a predetermined height, a knockout plate 23 is pressed against the claws 22 from behind, thereby causing the claws 22 to stand up all at once, and their tips project inwardly from the pillars 21. In this way, the lifting height of the pallet P1 is adjusted so that when the claws 22 are erected, the tips of the claws 22 enter between the roof panels M1 supported by the claws 93 of the lower chain 89. Now, in this state, when the lower chain 89 is rotationally driven so that the pawl 93 moves downward, the roof panel M1 is transferred from the pawl 93 of the lower chain 89 to the pawl 22 of the pillar 21. The claw 93 of the lower chain 89 is connected to the claw 2 of the column 21.
After the roof panel M1 is delivered to the roof panel M1, the roof panel M1 is tilted due to its own weight or against the roof panel M1. When the roof panel M1 is transferred from the stacker 14 to the pallet P1 in this manner, the lifter 18 is lowered and the pallet P1 is replaced with an empty one.

Even when replacing the pallet, the loupanel M
1 is sent to the stacker 14 without interruption. At this time, temporarily lower the upper chain 88.
is switched from continuous drive to intermittent pitch drive similar to the lower chain 89, and the upper chain 88 is made to hold the roof panel M1. This allows pallet loading work to be carried out continuously without interruption.

Next, a case where the product M is the side panel M2 will be explained. The side panel M2 is attracted to the elevating swing frame 45, rotates 90 degrees, and descends.
From a horizontal position to a vertical position. Above the side panel M2 whose orientation has been changed vertically in this way, there are hook carriers 102, 103 of the product hanging device 15.
is waiting. And a hanging hook 104,
When 105 is turned from horizontal to vertical, its lower end is hooked onto a window formed in side panel M2.
In this way, the side panel M2 is attached to the hook 104,1.
Hook carrier 10 in hanging state from 05
When 2,103 is moved forward, the side panel M2 is carried onto the stacking pallet P2 arranged below, and the hanging hanger 25 is inserted into the window of the side panel M2. Hook carrier 104,1
When 05 stopped, hooks 104 and 105
By returning to the horizontal position, the hanging hanger 25
The side panel M2 is hung and loaded. The moving distance of the hook carriers 102 and 103 is set by the pulse motor 112 so that it becomes gradually smaller for one pallet P2, and the side panels M2 are sequentially loaded on the hanger 25 at regular intervals from the base end to the front end. It will be done. Furthermore, since there are two hanging hooks 104 and 105, the hanging and loading work is performed alternately by the pair of hooks.

When a specified number of panels M2 are stacked on the pallet P2, the pallet is replaced. At the time of this replacement, the side panel M2, which is carried suspended by the hooks 104 and 105, is supported by the arm 116 of the sub stacker 106, and the empty pallet P2 is
Once in place, arm 116 is attached to it.
Replace panel M2 supported by .

Effects of the invention According to this invention, the product lowered by the press is transported out of the press by the product transport device,
The product is then lowered by the product lowering device and is successively supported by a plurality of product support claws of the product stacker. Therefore, since there is an interval between the plurality of products supported by the product support claws that is equal to the distance between the product support claws, the products are not damaged.

Furthermore, since the products supported by the product support claws of the product stacker are transferred from the product stacker to the pallet by the operation of the pallet lifter, multiple products can be efficiently loaded onto the pallet at once. .

Further, when products are loaded on the pallet, the pallet is lowered by the pallet lifter and the products are discharged from the product stacker, so that the next product can be immediately sent to the stacker. If it is attempted to transport the products together with the stacker to a predetermined location, large-scale equipment will be required and work interruption time will also be lengthened.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, in which Fig. 1 is a side view, Figs. 2 and 3 are views taken along the - line and - line in Fig. 1, respectively, and Figs. 4 to 6 show the product. Fig. 4 is a front view, Fig. 5 is a sectional view taken along the line - in Fig. 4, and Fig. 4 shows the descending rotation device.
6 is a sectional view taken along the - line in FIG. 5, FIGS. 7 and 8 show the subcarrier of the delivery device, FIG. The figures are a sectional view taken along the - line in Fig. 7, Fig. 9 is a side view of the substacker, Fig. 10 is a side view of the hanging device, Fig. 11 is a vertical longitudinal sectional view of the substacker and the hanging device, and Fig. 12 is a vertical sectional view of the substacker and hanging device. The figure is an explanatory diagram of pallet loading work. 11... Product unloading device, 12... Product lowering and rotation device, 14... Product stacker, 15... Product hanging device, 21, 24... Pillar, 22, 93... Claw, 2
5... Hanger, 81... Support member, 84-87...
...Sprocket, 88, 89...Chain, 10
2,103...Futsukiyariya, 104,105
...Hook, M1, M2...Product, P1, P2...
...Palette.

Claims (1)

[Scope of Claim for Utility Model Registration] A plurality of product support claws 22 that are vertically and equidistantly attached to the front and rear columns 21 facing each other at intervals larger than the longitudinal length of the product M1 in the column-mounted box pallet P1 so as to be able to rise and fall freely. Plate-shaped pressed product M
1, and when the product is not loaded, the product support claws 22 are down;
The knockout plate 23 that causes the
A product lowering device 12 and a product stacker 14 are arranged vertically in front of a product unloading device 11 that transports the product M1 forward from the press in a horizontal position. Left and right vertical support members 81 facing each other at an interval greater than the length in the left and right direction, upper and lower sprockets 84 to 87 attached to opposing surfaces of the support member 81, and upper and lower sprockets 84 to 8
Chains 88, 89 hung on the pallet P1 and the product support claws 22 on the chains 88, 89
A pallet lifter 18 is provided below the product stacker 14, and a plurality of product support claws 93 are installed at equal intervals and can be raised or lowered.
is arranged, and the pillars 21 of the pallet P1 are supported by the product support claws 93 of the product stacker 14.
A pallet P1 is placed at a height between the front and rear edges of the two adjacent products M1, which are located on both sides of the product M1.
The pallet P1 is lifted up by the pallet lifter 18 so that the product support claws 22 of The product M1 is inserted between the front and rear edges of the product M1, and in this state, the chains 88 and 89 are driven so that the product support claw 93 of the product stacker 14 moves downward, thereby transferring the product from the product stacker 14 to the pallet P1. A press product pallet loading device that allows M1 to be transferred.