JPH0456720B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention involves taking out containers one by one from a pallet storing a plurality of powder containers, emptying the contents, and then placing the containers on the pallet again. This invention relates to a welding flux storage container removal, transportation and storage device for returning.

[Conventional technology]

In the production of welding flux, as shown in FIG. 1, a predetermined amount of raw material is cut out from various raw material tanks 10a, 10b, . . . using measuring instruments 12a, 12b, . Here, the mixed powder and granules are dry mixed and poured into containers 20a, 20b, etc. on the pallet 18, and the pallet 18 is transported by a forklift or the like, and the containers on the pallet are transported by a tumble lift (product name) 22 or the like. 20a, 20b, . . . are taken out one by one, placed in a wet mixer 24, mixed with water glass, granulated with a granulator (not shown), and dried.

Containers 20 on pallet 18 (subscripts a, b, ...
are omitted as appropriate) are four in this example, which means that the dry mixing amount at one time of the rotary mixer 16 is 800 kg, and the one mixing amount of the wet mixer 24 (this cannot be made very large) is 200 kg. However, it is consistent.
In addition, containers for powder and granular materials are generally loaded from the top and discharged from the bottom, as typified by container bags, but in this type of container, air escapes from the powder and granules during transportation and storage, resulting in an increase in porosity. If the pressure drops, a so-called bridging phenomenon may occur during discharge from below, and the powder in the container may not come out. In this respect, upward input,
The upward discharge type container 20 is advantageous, and there is no problem that powder or granules do not come out of the container. However, it is necessary to turn the upright container upside down to drain the contents. The tumble lift 22 performs this task by lifting the container, inverting the container as shown in dotted lines over the mixer 24, and dumping the contents into the mixer.

[Problem that the invention seeks to solve]

A powder conveyance and supply system that includes a pallet with multiple upward input and upward discharge containers and a tumble lift to open the containers is extremely rational in the welding flux manufacturing process, but in order to save labor, it is necessary to remove the containers from the pallet. A device is required to take out one container, pass it to the tumble lift, and then pick up the container whose contents have been emptied by the tumble lift and place it back on the pallet. The present invention seeks to provide such a device.

[Means for solving problems]

The present invention involves welding by taking out containers one by one from a pallet loaded with a plurality of containers into which powder and granules are loaded and discharged upward, emptying the powder and granules, and returning the empty containers onto the pallet again. A flux storage container take-out, transport and storage device for use in flux storage containers, comprising a tartable on which the pallet is placed, a mechanism for rotating the turntable by a predetermined angle, and a jack that pushes up the bottom of one of the containers on the pallet placed on the turntable. It has a table mechanism, a traveling body having a conveyor, and a motor for driving the traveling body, and one end of the traveling body is inserted into the gap created between the bottom of the container pushed up by the jack and the pallet base. and receiving a container at the one end;
The present invention is characterized by comprising a reversible self-propelled conveyor that transports the container by the operation of the conveyor and the running of the traveling body, and returns the empty container to the turntable.

[Effect]

With turntable mechanism and reversible self-propelled conveyor,
Multiple containers placed on a pallet can be taken out one by one, transported, the powder and granules inside the container can be opened, and the empty containers can be returned to the pallet. Powder and granule material transportation between mixers can be carried out reasonably and reliably.

〔Example〕

Next, the present invention will be explained with reference to the drawings.
FIG. 2 shows the pallet, with a being a plan view and b being a side view. The pallet 18 has a base 32, with a support 34 in the center of the base and support 34 around the periphery.
6a to 36d are planted, and containers 20a to 20d are placed between these supports as shown. The base 32 is provided with a recess into which the bottoms of the containers 20a to 20d are inserted, and the container bottoms are inserted into the recesses.
The supports 34 and 36 provide peripheral support so that the containers on the pallet remain stably erect. Holes 38a to 38d are provided in the center of the recess as shown by dotted lines. A container support plate 70, which will be described later, passes through this hole. Further, a frame body (plate and tube) 40 is provided at the bottom of the base 32 to facilitate the insertion of a forklift.

This pallet 18 is placed below the chute of the mixer 16 with containers 20a to 20d inserted therein, and the dry mixed powder and granules are received in the containers 20a to 20d. The mixing amount for one batch is 800 kg, which is stored in four containers 20a to 20d each containing 200 kg. Thereafter, a fork of a forklift (not shown) is inserted into the lower part of the base 32, slightly lifted, and the pallet 18 is transported to the location where the wet mixer 24 is installed. At the wet mixer, the pallets are passed one by one to the tumble lift.
The container is rotated 90 degrees at a time, the container is received from the pallet and transferred to the tumble lift, the powder and granules inside the container are opened into a wet mixer, and the empty container is returned to the pallet.
Repeat this operation. FIG. 3 shows a turntable mechanism for receiving and storing containers that performs the above-mentioned 90° rotation.

In Figure 3, a is a plan view, b is a partially cross-sectional side view, and c is a similar side view, but the viewing angle is different from b.
90° different. As shown in these figures, the turntable mechanism 50 includes a base 44 supported by a support 42, a turntable 48 mounted on the base, and the like. An auxiliary roller 52 supports the lower surface of the turntable, a reduction gear mechanism 54, and a drive motor 56 rotate the turntable 48. Two pallet receiving chain conveyors 58 stretched in parallel and a plurality of pallet receiving auxiliary rollers 60 are provided on the turntable. The conveyor 58 is hung between two sprockets to perform endless rotation, and one of the rotating shafts 62a, 62b of the sprockets, 62a, is connected to the motor 64.
Driven by. The turntable 48 is provided with four holes 66a to 66d, through which the container support plate 70 at the upper end of the screw jack 68 for pushing up containers passes. 69 is a pillar for steadying the screw jack. 72 is a drive motor that moves the screw jack 68 up and down. At the container takeout/storage position, the turntable 48 rotates in 90° increments, and for this purpose a limit switch 74 is installed on the base 44.
But also the striker 76a on the turntable
76d is provided. 78a to 78d are concave plates for receiving pusher type position fixing devices.

As shown in the figure, most of the turntable mechanism 50 is housed in a pit, with the upper turntable 48 protruding from the floor. The forklift carrying the pallet 18 places the pallet on the chain conveyor 58 directly or via a roller conveyor (not shown). Motor 64 drives conveyor 58 to ensure that the pallet is properly centered on turntable 48. FIG. 4 shows a reversible self-propelled conveyor 80 that transfers the pallets on the turntable one by one to the tumble lift. In FIG. 4, a is a partially sectional side view, and b is a plan view.

As shown in FIG. 4, the reversible self-propelled conveyor 80 includes a pedestal 82, a running body 85 consisting of a plurality of arms 84, a conveyor chain 86, etc. that run on the pedestal. 88 is a sprocket, and 90 is a chain drive motor. A ball screw shaft 92 is passed through the frame 82, and a female threaded bearing 94 is attached to the ball screw shaft 92.
are screwed together, the bearing 94 is attached to the frame of the traveling body 85, and the screw shaft 92 is rotated by the motor 96. Due to this rotation, the traveling body 85 moves forward as shown by the dotted line, and as shown by the solid line. fall back.
98 is a running wheel for this forward and backward movement. Reference numeral 99 denotes a pusher type turntable stop position fixing device driven by an air cylinder 97, which fits into the concave plate 78 and fixes the relative position between the turntable 48 and the reversible self-propelled conveyor 80.

The pallet 18 into which the four containers 20a to 20d have been inserted is placed on the center of the turntable mechanism 50, and the turntable mechanism correctly faces the reversible self-propelled conveyor 80 (screw jack 68).
concave plate 78 (with the side facing the conveyor 80)
With the fixing device 99 fitted, the motor 72 operates, and the screw jack 68 pushes up one of the containers as shown by the dotted line in FIG. This results in a gap between the bottom of the container and the base of the pallet 18. Then, the motor 96 is rotated, the traveling body 85 is moved, and its right end is inserted into the gap as shown by the dotted line in FIG. Next, the screw jack 68 is lowered by the motor 72, and the container is moved to the traveling body 85.
onto a pair of conveyor chains 86. Next, the motor 96 is reversed, the traveling body 85 is returned to the solid line position, and the motor 90 is driven to operate the conveyor chain 86 to move the containers on the chain to the fourth position.
Move it to the left end in the diagram. In this position, a tumble lift can receive the container (with a further intervening roller conveyor) and empty the contents into a wet mixer.

The empty container after emptying its contents into the wet mixer is returned to the left end of the reversible self-propelled conveyor 80 in FIG. 4 by a tumble lift. So the motors 90, 96
is rotated to return the empty container to the position indicated by the dotted line in FIG. Thereafter, the motor 96 is rotated to return the traveling body 85 of the reversible self-propelled conveyor 80 to the solid line state, and the screw jack 68 is lowered by the motor 72 to return the empty container to its original position on the pallet 18. This completes one cycle, and the next step is to rotate the motor 56 and turn the turntable 48.
Rotate 90 degrees and carry out the next container on the pallet, discharge its contents, and carry it in. The same applies below. After repeating this operation four times, all the containers on the pallet will be emptied and returned. Then, the pallet is removed from the turntable mechanism 50 by a forklift, a roll conveyor, etc., and placed on the next pallet loaded with a content container. Prepare for the delivery.

In the above embodiment, the pallet 18 is conveyed to the turntable mechanism using a forklift as an example, but it may also be carried in and out by a directly connected conveyor.

Although the drive control of each motor may be performed using dedicated hardware, it is easier to perform the process using software using a computer. FIG. 5 shows an overview of the software in the form of a flowchart.

〔Effect of the invention〕

Since this device uses containers with upward loading and upward discharging, there is no problem of powder particles remaining in the container and being unable to be discharged due to the bridging phenomenon.In addition, multiple containers can be stored on pallets, which can be used to transport and empty the contents. Since it is charged, it is very effective for transporting powder and granular material between a dry mixer that can process large volumes and a wet mixer that can only process small volumes. Furthermore, since the container can be a simple cylinder with a bottom, the structure is simple and inexpensive, and the inside of the container is easy to clean, and when changing the component ratio of a mixture of various powders and granules, it is possible to avoid mixing of different powders and granules. There is no possibility of disturbing the component ratio.

[Brief explanation of the drawing]

FIG. 1 is a diagram explaining the outline of the device of the present invention, and FIG.
Figures a and b are a plan view and a side view of the pallet; Figures 3 a, b and c are a top view, side view, and side views from different angles of the turntable mechanism; Figures 4 a and b are reversible and self-propelled. A side view and a plan view of the type conveyor, and FIGS. 5a to 5f are explanatory diagrams of the control procedure. In the drawing, 20 is a container, 18 is a pallet, 48 is a turntable, 54 and 56 are turntable rotation mechanisms, 68 is a jack, 50 is a turntable mechanism, 86 is a conveyor, 85 is a running body, and 96 is a running body. It's a motor.

Claims (1)

[Scope of Claims] 1. Take out the containers one by one from a pallet loaded with a plurality of containers into which powder and granular materials are loaded and discharged upward, empty the powder and granular materials, and place the empty containers on the pallet again. A welding flux storage container take-out, transport and storage device for returning the welding flux to a container includes a turntable on which the pallet is placed, a mechanism for rotating the turntable by a predetermined angle, and one of the containers on the pallet placed on the turntable.
A turntable mechanism includes a jack that pushes up the bottom of the container, a running body that has a conveyor, and a motor that drives the running body.
A reversible self-propelled type in which one end of the running body is inserted between the two, the container is received at the one end, the container is transported by the operation of the conveyor and the running body is run, and the empty container is returned to the turntable again. 1. A welding flux storage container take-out, conveyance and storage device, characterized by comprising a conveyor.