JPS606246B2 - Powder conveyance storage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a powder transport and storage device, and more particularly to a device capable of automatically transporting a powder raw material used as a welding material to a predetermined storage location.

In the present invention, the term "powder" is not limited to powder alone, but also includes a mixture of powder and granules. Conventionally, the transportation means for transporting and storing various types of powder raw materials to and from a large number of storage tanks have been a combination of forklifts and overhead cranes that rely on manual operation, or pneumatic systems using powder pumps, etc. An automatic transport method using .

The former method of transport using a forklift, etc. involves unpacking the powder contained in a paper bag on the ground, placing the powder in a hobber, moving it to a crane position using a forklift, and then moving it to a crane position. This hopper is suspended and transported to the top of the target storage tank, and the powder is discharged into the tank by natural fall.As the equipment cost is relatively low, it is commonly used in welding material manufacturing factories. There is.

However, in this method, everything is manually operated, so it takes a long time for one transportation cycle, and the generation of dust is difficult to avoid, leading to a deterioration of the working environment. In addition, it is necessary to install a pipe tray, etc. in order to improve the discharge of the powder in the hopper, and the connection of the power supply cable etc. must be done every transport cycle, which is a problem that is impractical. . In the latter transport method using air pressure, a powder pump is installed on the ground and each storage tank is connected with a pipe, thereby transporting each powder to each storage tank.

However, this method requires the installation of switching valves and air separation filters at each storage tank location, and also requires a large-capacity compressor to transport the powder using air pressure, resulting in relatively high equipment costs. . Moreover, it is necessary to appropriately adjust the air volume and pressure of suction or pressure feeding according to the properties of the powder, which complicates operation. Furthermore, in the case of powder with a light bulk specific gravity (150 mesh or higher), it is difficult to completely separate the air from the powder, and the fine powder escapes into the atmosphere, reducing the yield. In the case of heavy powder, the conveyance capacity becomes extremely low, and it becomes impossible to convey in the case of lumps. Therefore, this conveyance method has problems such as significant differences in performance depending on the powder properties, making it unsuitable for conveying a wide variety of powders. The present invention solves the problems of the conventional powder conveyance method described above, automates all operations, conveys a large amount of powder in a short time, is advantageous in terms of maintenance, and generates less dust. The purpose of the present invention is to provide an automatic conveyance device for powder that has a small amount of powder.

Another object of the present invention is to completely avoid mixing of different types of powder when transporting powder, making it possible to obtain high-quality products, and making it ideal for both high-mix, high-volume and high-volume, low-volume production. An object of the present invention is to provide a powder conveying device. In order to achieve the above object, the present invention is constructed as follows.

In other words, there is a group of storage tanks arranged in multiple rows on the upper floor level, with rails for running moving vehicles on each row, and a group of storage tanks erected to connect one end of the group of storage tanks with the ground. A stacker for riding a mobile vehicle is movable in the direction perpendicular to the tank row and in the vertical direction, and the stacker receives powder on the ground and moves up and down on the stacker, and also travels over a predetermined tank row. This is a powder transport and storage device that is constructed of a mobile vehicle with a hopper and a hopper-equipped vehicle that discharges powder at an arbitrary storage tank position. DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of the present invention will be described below with reference to the drawings, taking as an example the transportation of powder raw materials to a storage tank for blending raw materials in the manufacture of welding materials. FIG. 1, FIG. 2, and FIG. 3 are an elevation view, a plan view, and a side view showing a specific example of the powder raw material conveying equipment according to the present invention. Figures 1 to 3
As shown in the figure, a large number of storage tanks 2 are installed on the upper floor of Ren House 1, arranged in multiple rows (four rows in the case shown) on the same surface, and one end (right end) of the two rows of storage tanks is installed. A stacker 3 is installed vertically connecting the storage tank 2 level and the crush level, and on the ground on the opposite side of the storage tank 2 across the stacker 3 is a scale bagging machine 4 for bagging powder raw materials.
An inclined conveyor 5 and a storage hopper 6 are installed at the upper end of the inclined conveyor 5. stacker 3
As shown in FIGS. 4 and 5, it is made up of two parallel masts 7 and a carriage 9 that moves up and down between the masts 7 by driving a hoisting rock 8, and the mast 7 moves on a rail. The mast 7 is erected on a lower truck 11 that runs on wheels 10, and the upper part of the mast 7 is guided by an upper guide rail 12 via guide rollers 13.

The rails and guide rails 12 are laid in the same direction, that is, in a direction substantially perpendicular to the two rows of storage tanks in FIG. The system selects the positions of two arbitrary rows of tanks and stops them, and a mobile vehicle equipped with a hopper, which will be described later and is mounted on a carriage 9, is caused to travel over the selected row of storage tanks 2. Further, on each row of the storage tanks 2, two parallel rails 14 with a hopper for running a mobile vehicle having a rectangular cross section are laid, and a rail 14 for running a moving vehicle with a hopper is installed to connect the lower part of the stacker 3 and the storage hopper 6. Rails 15 for moving vehicles are also provided.

As shown in FIG.
It is preferable to install a plurality of lines perpendicular to the horizontal movement line of the stacker 3. 6 and 7 show an example of the structure of a moving vehicle 16 with a hopper. The moving vehicle 16 runs on a rail 15 between the storage hopper 6 and the stacker 3, and is mounted on the carriage 9 of the stacker 3. is moved horizontally (Y direction) and vertically (Z direction), and further moves from the carriage 9 to the rail 1 above the storage tank 2.
It runs on 4. This moving vehicle with hopper 16
The movable trolley 20 has a plurality of wheels 18 rotated by, for example, a running motor 17 and a plurality of guide rollers 19 that correspond to the inner side surface of the rail 14 at the lower part, and the movable trolley 20
and a hopper 21 which is held movably up and down. The lower part of the hopper 21 is formed into an inverted conical shape, and its tip passes through the movable cart 20 and serves as a powder discharge port 22, and the upper part of the hopper 21 is narrowed into a conical shape and serves as a powder receiving port 2.
It is 3. Further, the hobber 21 can be raised and lowered within a certain range by lifting motors 24 installed on both sides in the diametrical direction, and is smoothly guided by a hopper guide 25. Further, a conical cone gate 26 is attached to the discharge port 22 of the hopper 21, and the cone gate 26 is fixed to the lower end of a shaft 27 passing through the center of the hopper 21.
is connected at its upper end to a punch 29 which is moved up and down by a vertical movement sill 28 provided on both sides of the hopper 21.

Therefore, the cone gate 26 is opened and closed by the operation of the cylinder 28. Incidentally, the discharge port 22 and the receiving port 23 of the hopper 21 are provided with flanges so as to be in close contact with the flanges of the other hopper or tank under pressure to prevent powder from escaping to the outside. Further, it is preferable that the traveling motor 17 provided in the movable trolley 20 employs a system that allows smooth starting, stopping, and acceleration operations. Furthermore, although not shown, a pipelator can be attached to the hopper 21 so that the powder inside can be completely discharged in a short time when discharging the powder. 30 is an air vent pipe attached to the hopper 21.

Next, the operation of the conveying device of the present invention will be explained. The powder raw material contained in the cement bag or container bag is scaled and taken out by a scale bag machine 4. It is taken out and transported and stored in a storage hopper 6 by a conveyor 5.

On the other hand, a mobile vehicle 16 with a hopper is already waiting under the storage hopper 6, and the hopper 21 is raised by the lifting operation of the lifting motor 24, and the receiving port is inserted into the flange of the discharge port at the bottom of the storage hopper 6. After the flanges 23 are tightly pressed together, the gate of the storage hopper 6 is opened and the powder is allowed to fall into the hopper 21. In this case, the discharge ports of both hoppers 6 and 21 are brought into close contact with each other, and the air vent pipes provided in both hoppers are brought into close contact with each other, so that there is no risk of dust leaking to the outside. Next, after confirming that the transfer of powder from the storage hopper 6 to the hopper 21 is completed, the lifting motor 17 is operated in reverse to lower the hopper 21. The mobile vehicle 16 with a hopper that has finished leaving the storage hopper 6 then travels on the rail 15 and reaches the storage hopper 3.
It lands on the carriage 9, which is waiting at the lower limit position, and stops. In this state, the carriage 9 is raised in the Z direction by the start of the hoist 8, and at the same time, the stacker 3 is moved in the Y direction along the rail and the upper guide rail 12 to the position of two predetermined storage tanks. Stop wearing a hakama. The rising carriage 9 also stops at the same level as the rail 14 of the storage tank 2. The moving vehicle 16 with a hot bar placed on the stopped carriage 9 is
Next, based on the command signal, the carriage 9 is detached from the rail 1.
4 in the x direction and stops at a predetermined storage tank 2 position. After confirming whether this stop position is correct, the lifting motor 17 of the mobile vehicle 16 is activated to lower the hover 21, and the discharge port 22 is lowered.
After the flange of the storage tank 2 and the flange of the receiving port of the storage tank 2 are brought into close contact with each other under pressure, the vertical cylinder 28 is started and the shaft 27 is lowered to lower the cone gate 26 and close it. When the cone gate 26 is opened, the powder inside falls from the discharge port 22 into the storage tank 2. In order to improve the discharge of this powder, the shaft 27 holding the cone gate 26 is periodically moved up and down by the cylinder 28. When the powder is rocked, the cross-linking of the powder formed in the hopper 21 and the solidified lumps formed in the easily adsorbed powder are broken down. It is also possible to semi-forcibly discharge the powder inside the hopper using a pipelator or the like. When the discharge of powder from the hopper 21 of the moving vehicle 16 is completed, the cone gate 26 is closed, the hopper 21 is raised, the moving vehicle 16 is driven again, and returned to the top of the carriage 9 of the stacker 3, and then the Z The moving vehicle 16 is lowered and moved in the direction and the Y direction to return to the appropriate storage hobber 6 position, and is placed on standby for the next conveyance.

Thereafter, the same operation may be repeated to transport and store the powder, and in this way, even if there are many types of powder, it is possible to automatically transport and store each powder to its intended storage tank. In addition, in the present invention, all operations are performed automatically, so for example, starting and stopping of a moving vehicle with a hover, powder receiving and discharging operations, and moving and lowering operations of a stacker are based on electrical signals. The selection of the tank row and the destination of the moving vehicle are also carried out based on known control methods.

Note that a method for controlling the destination of a moving vehicle will be described below as an example. A storage setting device is installed on the moving vehicle with a hover, and a destination storage device is installed on the rail side.

When selecting this storage device, the properties of powder vary widely, and if a proximity switch is used with magnetic powder, it will be affected by magnetism and there is a risk of malfunction.
A fully enclosed type switch was used at each station to check each storage tank. When a moving vehicle passes over this reed switch, the pulse is received by the control panel on the ground, which is then sent as a signal to the moving vehicle, which sends a deceleration command to the moving vehicle traveling on the rails, and after decelerating, it will start at a predetermined speed. Stop it with a dog. In this case, use the reed switch again to confirm that it is in the predetermined position, and then discharge the powder inside the hopper into the tank. Transmission between the control panel on the ground and the moving vehicle is performed by installing a winding drum on the moving vehicle and wrapping a cabtyre cable that is not affected by dust around it. As explained above, according to the powder conveying device of the present invention, powder of any type and properties can be automatically and smoothly transported to a predetermined storage tank. This method significantly improves conveyance efficiency and saves labor compared to conventional conveyance methods.

Furthermore, by employing the present invention, operations such as managing and recording the amount and type of powder stored become easier. Furthermore, all operations from receiving powder to discharging it can be performed automatically and the generation of dust can be prevented, which contributes to reducing the burden on workers and improving the working environment.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing an example of the transport storage device of the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a schematic side view, and Fig.
The figure is a front view of the stacker that constitutes the main part of the present invention, Figure 5 is a side view of Figure 4, Figure 6 is a side view of a moving vehicle with a hopper that constitutes the present invention, and Figure 7 is Figure 6. FIG. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] 1. A group of storage tanks arranged in multiple rows on the upper floor level and provided with rails for running moving vehicles on each row, and a group of storage tanks erected so as to connect one end side of the group of storage tanks with the ground, as described above. A stacker for riding on a moving vehicle is movable in the direction perpendicular to the tank row and in the vertical direction, and the stacker receives powder on the ground and is loaded onto the stacker to move up and down, and also travels over a predetermined tank row. A powder transport and storage device comprising a mobile vehicle with a hopper and a hopper for discharging powder at a storage tank position.