JPS6135091B2 - - Google Patents

Description

[Detailed description of the invention] Generally, a long rod-shaped member such as a square or H-shaped cross section is
A large number of pallets are arranged on a transport pallet, and many more are stacked on top of that tier to form a multi-tiered stack, and the pallets are transported together in this stacked state. The present invention relates to a device for stacking rod-shaped members in multiple stages in such a case.

Conventionally, this type of long rod-shaped member was manually stacked one by one in multiple tiers on a transportation pallet.
Alternatively, a large number of long rod-shaped members are placed on a plurality of rod-shaped spacers arranged perpendicularly thereto, and both ends of each spacer are simultaneously clamped and lifted using a clamping mechanism that is moved up and down by a crane. However, the former method is extremely inefficient and impossible if the rod-shaped members are heavy, and the latter method In order to clamp both ends of multiple spacers at the same time using a clamping mechanism, the clamping points and spacers must be accurately aligned, which requires a great deal of effort and cannot be automated. This hoisting and stacking method is not only dangerous as there is a risk that the hoisted rod-shaped members may fall, but also suffers from severe damage due to falling, resulting in a high frequency of defective products.

The present invention is designed to automatically stack this kind of long rod-like members without causing problems like the conventional ones. 1 shows a chain conveyor in which a plurality of long rod-like members A are arranged in parallel in order to sequentially convey them in a direction perpendicular to the longitudinal direction thereof, and the rod-like members A are placed on the front end of the chain conveyor 1 when stacking them. In general, the same number of chain conveyors 1 are arranged in close proximity to each other, and a stacking mechanism 2 is provided at the front upper part of each of these chain conveyors 1 in the conveying direction, and a rod-shaped member is further provided at the front lower part of the stacking mechanism 2. Each pallet 3 for transportation is arranged.

The stacking mechanism 2 includes each of the chain conveyors 1
An elongated frame 4 extending in a direction perpendicular to the conveying direction of the
Sprockets 5, 5' are provided at both ends of the frame 4 in the longitudinal direction, and four sprockets 6, 7, 6', 7' are provided at the center in the longitudinal direction. 6, 7 and
5', 6', 7', the two endless chains 8, 8' are positioned at the right half position from the center of the rod member A in the longitudinal direction. and the position of the left half,
The rod-shaped member A is provided along the longitudinal direction, and mounting portions 9 and 9' for the rod-shaped member A are provided on the lower surfaces of both endless chains 8 and 8', respectively.
A roller-shaped arm rod 11 is provided in which both the mounting portions 9, 9' are cantilevered at the tips of brackets 10, 10' attached to the endless chain so as to extend horizontally toward the chain conveyor 1. 11' are arranged at appropriate intervals in the longitudinal direction of the endless chain (the drawing shows three pieces), while both endless chains 8, 8' are
The mounting portions 9 and 9' in each of them are connected to the sprockets 5 and 5 at both ends from the position on the lower surface side of the endless chain.
5', as shown by the two-dot chain line, and then return to the original lower position again, so that they reciprocate in opposite directions.

The frame 4 in the stacking mechanism 2
is suspended from the trolley 12 so as to be able to rise and fall vertically, while the rail 13 is provided at the upper position of each chain conveyor 1 parallel to the conveying direction of the trolley 12.
13, the stacking mechanism 2 is moved from the position shown by the solid line in FIG. When the placing parts 9, 9' descend to a place lower than the upper surface of the endless chain 1, the placing parts 9, 9' as shown by arrow b,
The arm rods 11, 11' at 9' are moved horizontally so as to fit between the chain conveyors 1, and then the arrow c is moved so that the mounting parts 9, 9' are above the upper surface of the chain conveyor 1. When it rises as shown in , it moves horizontally to the top of the pallet 3 as shown by the arrow d in this raised position state, and then the placement parts 9 and 9' move the top surface of the pallet 3 or the rod-shaped pallet placed on the top surface. It descends as shown by the arrow e to a height approaching the member A, and in this descending state, both endless chains 8, 8' place the mounting portions 9, 9' of the rod-shaped member A on the lower surface side of the endless chains 8, 8'. If it is rotated in the directions of arrows h and h' so as to escape from
When returning and moving, both endless chains 8, 8' are configured so that they rotate in the directions of dotted arrows i and i' in order to return their mounting portions 9, 9' to the lower surface side. .

In this configuration, while a predetermined number of rod-like members A are lined up on the chain conveyor 1, the stacking mechanism 2 descends as shown by arrow a and then horizontally moves in the direction of the chain conveyor 2 as shown by arrow b. The rod-like members A on the chain conveyor 1 are raised by the placing parts 9 and 9', and when a predetermined number of rod-like members A are lined up on the chain conveyor 1, the rod-like members A are lifted up as shown by the arrow c. , the lined rod-shaped members A are placed on the placing parts 9 and 9' and lifted all at once from above the chain conveyor 1, and then moved horizontally to the top of the pallet 3 as shown by arrow d, and then moved as shown by arrow e. It descends like this. Then, both endless chains 8, 8' are indicated by arrow h,
By rotating in the h' direction, both the mounting parts 9, 9' that had received the rod-shaped member A escape from the lower surface side of the endless chain.
The plurality of rod-like members A that were placed on the pallet 9' fall while being lined up and are placed on the pallet 3. When this is finished, the stacking mechanism 2 moves along the arrows f and g. At the same time, both the mounting parts 9 and 9' are moved to the lower surface side of the endless chains 8 and 8' due to the rotation of both the endless chains 8 and 8' in the direction of the dotted arrows i and i'. When the stacking mechanism 2 returns and then moves along the arrows a, b, c, d, and e, the plurality of rod-shaped members A on the chain conveyor 1
While they are lined up, bring them to the top of the plurality of rod-shaped members A that had been placed on the pallet 3 earlier, and repeat the action of placing them on the upper surface of the rod-shaped members A.
are stacked on pallet 3 in multiple stages.

As described above, in the present invention, a pallet for conveying the rod-shaped members is disposed in front of a chain conveyor in which a plurality of chain conveyors are arranged in parallel to convey the rod-shaped members in a direction perpendicular to the longitudinal direction of the rod-shaped members. A frame extending in the longitudinal direction of the rod-shaped member is provided at the upper part between the conveyor and the pallet so as to move back and forth in a substantially horizontal direction between the upper part of the chain conveyor and the upper part of the pallet, and to move up and down;
Two endless chains are provided in the frame, respectively, along the longitudinal direction of the rod-shaped member, at a right half position and a left half position from the center of the rod-shaped member in the longitudinal direction. On the lower surface side, a mounting portion for a rod-shaped member is provided, each of which is provided with a plurality of cantilevered arm rods extending horizontally toward the chain conveyor in the feeding direction of the endless chain. , is characterized in that the mounting portions of each of them are configured to rotate in opposite directions so as to escape from the lower surface side, and unlike the conventional one, a plurality of rod-shaped members are arranged side by side. Since there is no need to clamp both ends of the spacer at the same time, the structure of the device is simple.
Not only is automation possible, the speed of stacking is fast, and efficiency is significantly improved, but the frequency of damage to the rod-shaped members is low.Furthermore, the present invention has a frame extending in the longitudinal direction of the rod-shaped members,
By providing two endless chains and rotating both of the endless chains in opposite directions, the placing part in each of them is configured to escape from the bottom side of the endless chain. The rotational movement distance of the endless chain can be reduced compared to when only one chain is used, and
This has the advantage that there is no need for a means to prevent the rod-shaped member on the upper surface from moving in the movement direction when the placing part moves away.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view, FIG. 2 is a side view of FIG. 1, and FIG. 3 is an enlarged sectional view of FIG. 1. A... Rod-shaped member, 1... Chain conveyor, 2...
...Stacking mechanism, 3... Pallet, 4... Frame, 8, 8'... Endless chain, 9, 9'...
Placement part, 11, 11'...Arm rod.

Claims (1)

[Claims] 1. A pallet for transporting the rod-shaped member is disposed in front of a chain conveyor in which a plurality of chain conveyors are arranged in parallel to convey the rod-shaped member in a direction perpendicular to the longitudinal direction of the rod-shaped member. A frame extending in the longitudinal direction of the rod-shaped member is provided on the upper part of the rod-shaped member so as to reciprocate in a substantially horizontal direction between the upper part of the chain conveyor and the upper part of the pallet, and to move up and down.
Two endless chains are provided along the longitudinal direction of the rod-shaped member at a right half position and a left half position from the center of the rod-shaped member, respectively, and the lower surface side of both endless chains is , each of the two endless chains is provided with a loading section for a rod-shaped member, each of which has a plurality of cantilevered arm rods extending horizontally toward the chain conveyor in the feeding direction of the endless chain; A stacking device for elongated rod-shaped members, characterized in that the stacking parts are configured to rotate in opposite directions so as to escape from the lower surface side.