JPS634022Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a stacker that stacks and deposits loads such as laminates made of a plurality of sheets of corrugated cardboard of a predetermined size on a cart placed at a loading position on the floor.

In this way, in order to build up piles by stacking loads on a conveyance truck, the tip of the load transport path, that is, the unloading end, is initially lowered and the load is unloaded onto the truck, and then the load is unloaded onto the truck in front of each other. In order to unload the next load on top of the load, the unloading end must be gradually raised higher.

For this reason, in the past, an undulating frame was pivotally mounted to the front end of a low fixed frame installed on the floor so that it could be raised and lowered, and an endless conveyor was stretched between the front and rear ends of the fixed frame and the undulating frame, respectively, to form a conveyance path.
The undulating frame was gradually raised to raise its free end. However, in this case, since the free end of the undulating frame is raised while rotating around the pivot point with the fixed frame as a fulcrum, the unloading end, which is the free end of the undulating frame, moves away from the cart as it goes up. Therefore, in order to stack and unload the next load exactly on top of the load previously unloaded onto the cart, as the unloading end rises, the cart must be moved toward the unloading end. Furthermore, in addition to the endless conveyor stretched on the undulating frame, it is necessary to stretch a conveyor for supplying loads onto the lower end of the conveyor on a fixed frame, so a device for individually stretching both conveyors is required. , a device for driving both conveyors in synchronization is required, resulting in a complicated structure and increased cost.

Therefore, this invention reverses the idea from the conventional one, and creates a movable frame by adding wheels to the conventional fixed frame.
The free end of the undulating frame is raised vertically, and each time the undulating frame is raised directly above, the movable frame is moved toward the undulating frame and pulled toward the undulating frame, and the movable frame is moved between the free end of the undulating frame and the rear end of the movable frame. A conveyor is stretched, and the upper surface (conveying surface) of this conveyor is moved horizontally from the rear end to the front end along the upper surface of the movable frame, and then is advanced diagonally upward along the undulating frame. This solved the above-mentioned problems. Therefore, according to the present invention, while the cart remains stationary at the loading position, loads can be accurately stacked and unloaded one after another on top of the cart to create a pile.

Hereinafter, the present invention will be explained with reference to an illustrated embodiment.

1 is a low movable frame that can be moved on the floor by wheels 2; 3 is a hoisting frame pivotally connected to the front end of the movable frame by a shaft 4; the free end of the hoisting frame is connected to a vertical lifting device 5, in this case a pantograph; It is supported on a table 5' which is raised and lowered by a type lifter, and can be moved up and down in the vertical direction near the loading position 6. The vertical lifting device 5 is not limited to a pantograph type lifter, but may be a piston cylinder type actuator operated by fluid pressure, for example.

In this embodiment, a shaft 7 is installed between the free ends of the undulating frame, and a bearing stand 8 is installed in parallel on the table 5'.
8, and a shaft 9 is also provided between the rear ends of the movable frame, and one or more chain wheels 7', 9', and 4' of the same number are fixed to both shafts 7, 9, and 4, respectively. An endless chain 11 of a conveyor 10 is connected between the pair of chain wheels 7' and 9' via a chain wheel 4'. When the undulating frame is tilted with its free end raised, the upper side of the conveyor 10, which carries out the conveyance, is fixed to the shaft 9 in order to prevent it from being tensioned in a straight line between the chain wheels 7' and 9'. The conveyor 10 is circularly driven in the direction of arrow A by transmitting power from the variable speed motor 12, and the shaft 7 is connected to a braking device 13, for example, an electromagnetic powder brake that can adjust the braking force according to the power supply current. , the lower side of the returning conveyor is always tensioned, the upper side is slightly loosened, and the distances between chain wheels 9' and 4' and between 4' and 7' are maintained in a straight line. Therefore, it is not necessary to install separate transport conveyors at different positions between shafts 9 and 4 and between shafts 4 and 7. Incidentally, if necessary, a plate 14 on which the lower surface of the upper side of the endless chain 11 slides is provided between the left and right sides of the movable frame and the undulating frame, and a plate 14 is installed between the left and right sides of the movable frame and the undulating frame, so that the plate 14 on which the lower surface of the upper side of the endless chain 11 comes into sliding contact is installed, and the section between the chain wheels 9' and 4' and the chain wheels 4' and 7 are provided. ′ may be guided in a straight line.

To create a pile of loads, move the cart 15 to the loading position 6, turn down the undulating frame 3, and make the upper chain wheels 9' and 4' and between 4' and 7' on the upper side of the conveyor almost on the same horizontal plane. , the load is placed on the chain wheels 9' and 4', and the load is transferred from the free end of the undulating frame to the trolley 1.
5. Distribute on top. Then, when the upper surface of the load on the cart reaches near the free end of the hoisting frame in the horizontal position, the vertical lifting device 5 is used to lift the free end of the hopping frame 3 by a small amount, which is repeated step by step, or the hoisting frame is free. The end is gradually and continuously lifted by a vertical lifting device, and finally the pile of loads at the desired height is created on the trolley 15. As the free end of the undulating frame is raised in this manner, the movable frame 1 is pulled by the undulating frame and moves in the direction of arrow B.

When a daily height of accumulation is achieved on the truck 15, operation of the conveyor is stopped, the truck 15 is moved, an empty truck is brought to the loading position, the undulating frame is laid down, and the conveyor operation is resumed.

If there is a distance between the free end of the conveyor and the cart 15, a relay roll 17 is installed on the table 5' with a bearing stand 16 in front of the free end of the conveyor as shown in the figure, and this is used to control the conveyance speed of the conveyor. It is sufficient to drive the rotation at a slightly higher circumferential speed (for example, about 10% faster).
The relay roll 17 preferably has a green layer on its outer peripheral surface.

The conveyor 10 may be of any type as long as it can convey the load without any problem even if the undulating frame is tilted with its free end raised.

In this embodiment, a forward protrusion 1 is provided at the center of the front surface on one of the left and right pairs of links of the endless chain 11.
8a, a recess 18 in the center of the rear surface into which the protrusion fits;
A cross beam member 18 having a cross member b is provided across the cross member, and the front and rear cross members are adjacent to each other, and the protruding portion 18a and the recess portion 18b are fitted, so that the cross beam members are aligned and circulate. Then, over the entire length of the conveyor 10, a plurality of (in this case, every three) cross beams are placed at the rear of the backing plate 19, which can be laid down on a plurality of (in this case, three) cross beams in the front-rear direction. The front edge of the front edge is raised diagonally upward by a spring or the like. Therefore, the backing plate 1 on which the load is placed
9 is a slope in which the free end of the undulating frame is lifted up by being pushed from behind by the front edge of the rear pushing plate 19 which is raised diagonally upwards immediately after it is laid down by the weight of the load on the cross beam material against the bias. Loads can be transported without any problem in any position.

In addition, in order to pivotally attach the back push plate and push it diagonally upward by raising its front edge, the width of the back push plate is made slightly wider than the cross beam material, and each side edge of the back push plate has a sliding plate on the side of the cross beam material. A contacting side plate 19' is provided facing downward, and the rear part of the side plate 19' is pivotally connected to the side surface of the cross beam by a support shaft 20.
0 is wound with a coil spring 21, one end of the spring is hung on a pin 21a on the side of the horizontal beam, and the other end is attached to the side plate 1.
9' so as to spring the backing plate up, and furthermore, the side plate 19' is provided with an arcuate hole 22a centered on the support shaft 20, and the side of the cross beam member is provided with a pin 22b that protrudes into the arcuate hole. to configure the stopper 22,
The limit to which the backing plate 19 tilts upward due to the elasticity of the coil spring is regulated by the contact between the lower end of the arcuate hole and the pin 22b. Of course, when the backing plate 19 is laid down on the cross beam due to the weight of the load, the pin 22b is located in the middle of the arcuate hole or at the upper end.

Thus, according to the invention, the free end of the undulating frame can be raised and lowered vertically, and the movable frame can be moved accordingly on the floor to load and build stacks in precise piles on the trolley.

And since the movable frame moves on the floor,
The conveyor 23 that supplies the load onto the movable frame may be placed with its front end slightly overhanging the rear of the movable frame.

The truck 15 also has an opposing wall 1 for receiving the front end of the load loaded onto the truck from the free end of the undulating frame 3.
5' is provided according to the height of the pile to be formed, and on the bearing stands 8, 8 or 16, 16 on the table 5', there is a piston cylinder 24 operated by fluid pressure that expands and contracts in a short stroke toward the opposing wall 15'. A press plate 25 is fixed between the ends of the press plate 25 to push the rear end of the load unloaded onto the truck forward, and during operation, the piston cylinder 2
4, the press plate 25 is reciprocated to lightly press the load on the cart against the opposing wall 15' to accurately align the front and rear surfaces of the pile. The upper edge 25' of the pressing plate is curved rearward as shown, and its upper surface is substantially flush with the lower surface of the load unloaded from the free end of the conveyor 10. For this reason, the upper edge 25' is shaped like a comb.
When the piston cylinder is mounted on the bearing stands 8, 8, the upper edge 25' is located at the interval between the conveyor 10, and when the piston cylinder is mounted on the bearing stands 16, 16, the annular groove 17 is placed in the relay roll 17 as shown in the figure. ’ is set,
It may be located at the upper part of the groove.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an overall side view, FIG. 2 is a plan view of the same, FIG. 3 is a partially cutaway side view of a portion of the conveyor, and FIG. 4 is a side view of the present invention. is a plan view of a part of the same as above, and in the figure, 1 is a movable frame, 2 is its wheels, 3 is an undulating frame, 4
numeral 5 indicates a vertical lift device, 6 indicates a loading position on the floor, 10 indicates a conveyor, and 11 indicates an endless chain thereof.

Claims (1)

[Scope of utility model registration request] A movable frame having wheels, movable on the floor by the wheels, and having a horizontal top surface is pivoted to the front end of the movable frame. A conveyor having an endless chain is provided between chain wheels of two shafts so as to be endlessly cyclically movable, and the free end of the undulating frame is supported on a vertical lifting device installed and fixed near a loading position on the floor, and A stacker car characterized in that a shaft to which a chain wheel is attached at the rear end of the movable frame is connected to a motor, and a braking device is connected to a shaft to which the chain wheel is attached to the free end of the undulating frame.