JPS6344434A - Feeder for powdered body material - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a powder raw material supply device, and more specifically to a bag opening machine installed above a plurality of surge tanks arranged linearly. is automatically moved according to the amount of powder raw material in the surge tank to automatically open the bag containing the powder raw material supplied from the supply conveyor and discharge it into the surge tank. The present invention relates to a powder raw material supply device as described above.

(Prior art) Conventionally, when opening bags containing powder raw materials such as carbon and zinc white used in paper bags for tires, cement, feed, etc., the raw material level meter installed in each surge tank measures the When the powder raw material in the surge tank fell below a certain level, a worker climbed up to the material input deck of the surge tank, opened the bag with a cutter or device such as a scalpel, and supplied the powder raw material into the surge tank.

However, it is extremely inefficient and dangerous for workers to monitor raw material level meters for multiple surge tanks and supply them to each surge tank. There is a problem in that the supply timing of powder raw materials is restricted due to process operations, and therefore productivity is reduced due to delays in the supply of powder raw materials to the surge tank.

In addition, due to manual labor, there were restrictions on the shape of the dust collection hood for powder raw materials, and therefore, complete dust collection could not be performed, causing environmental deterioration.

[Purpose of the invention]

This invention was devised by focusing on such conventional problems, and its purpose is to automatically supply powder raw materials to surge tanks in multiple steps without requiring human labor. This is a powder raw material supply device that is safe, can improve the environment, and eliminates the cause of productivity decline because the supply timing of powder raw materials is not delayed. It provides:

[Structure of the invention]

In order to achieve the above object, this invention is equipped with a raw material level meter and a bag opening machine is movably mounted above the input section of a plurality of surge tanks arranged linearly along each surge tank. A guide rail is installed, a powder raw material supply conveyor is disposed on the side of each surge tank in a direction perpendicular to the guide rail, and an output from the raw material level meter provided inside each surge tank is provided. The bag opening machine is configured to move to each surge tank based on a signal, and the bag containing the powder raw material is opened and automatically supplied to the surge tank when the remaining amount of powder raw material is low. The gist of this is that we have done so.

[Embodiments of the invention]

The present invention will be described in detail below based on the accompanying drawings.

FIG. 1 is a side view of a supply device 1 that sequentially supplies bags W containing powder raw materials according to the present invention, and FIG. 2 is a schematic plan view of FIG. 1, and the supply device 1 includes: A plurality of surge tanks 3 are arranged linearly through the frame 2,
A guide rail 5 is provided along each surge tank 3 on opposing flange portions 4 above the input portion of each surge tank 3.
A bag opening machine 6 is movably mounted on the guide rail 5 to open the bag W containing the powder raw material via the hopper 3a and discharge it into the surge tank 3. .

A plurality of rows of supply conveyors 7 are installed on the sides of the plurality of linearly arranged surge tanks 3 to sequentially supply bags W containing powder raw materials to the bag opening machine 6.

Further, at the bottom of each surge tank 3 supported by the frame 2, a raw material level meter 8 is provided to detect the remaining amount of powder raw material in the surge tank 3. Furthermore, at the discharge part of the surge tank 3, an electromagnetic A discharge conveyor 9 such as a feeder or a screw feeder is installed horizontally, and this discharge conveyor 9 is connected to a weighing machine 10 for powder raw material.

The bag opening machine 6 that moves along the guide rail 5 is controlled to automatically move to each surge tank 3 by an output signal from the raw material level meter 8 provided inside each surge tank 3. This control mechanism starts and stops a motor (not shown) that drives the running wheels 5a of the bag opening machine 6 using the output signal.

Next, the configurations of the bag opening machine 6 and the supply conveyor 7 will be explained in more detail with reference to FIGS. 3 and 4.

The supply conveyor 7 has a plurality of rollers 14 provided with sprockets 13 on a frame 12 arranged in parallel on two sides, and roller conveyors 143, 14 on these two sides.
b (may be arranged in - column) is the frame 12
The motor is configured to be driven in the right direction in FIG. 3 through two drive motors 15 with reduction gears installed at the bottom of the motor.

That is, the pulley 16 provided on the output shaft (not shown) of each drive motor 15 with a reduction gear, the pulley 16a, sprockets 17a, 17b, and each roller 1 interposed in the middle.
A belt 16b and a chain 18 are hooked around the sprocket 13 provided at the second side, and the roller conveyor 1 on the second side is rotated at a constant speed by the rotational driving force from the drive motor 15 with a reduction gear.
48 and 14b are configured to be rotationally driven at the same time.

Further, the frame 12 is provided with a bag opening cutter device 21 for opening the bottom side of the bag body W, and this bag opening cutter 21
In the device, a bracket 23 having an angular cross-section is fixed to the tip of a rod 22a of a cylinder 22 with a bellows fixed to a frame 12, and a central part of an arm 25 is rotatable via a pin 24 at one end of the bracket 23. A cutter 26 is fixed to the tip of the arm 25.

Further, a cylinder 27 with a bellows fixed to the bracket 23 is connected to the rear end of the arm 25, and as this cylinder 27 expands and contracts, the cutter 26 is moved through the arm 25 to the roller conveyor 1 using the pin 24 as a fulcrum.
48.14b It pivots so as to rise upward from below.

Further, the cutter 26 supported by the arm 25 is connected to the cylinder 2
2, the supply conveyor 7 moves forward and backward in the supply direction, that is, in the right direction in FIG. 3, and the bag body W is opened with the lower surface thereof raised up.

Next, the configuration of the bag opening machine 6 connected at the discharge end of the supply conveyor 1 will be explained.

The bag opening machine 6 has a plurality of guide rollers 33a and 33b that are rotatable horizontally with the roller conveyors 143 and 14b on the two sides on a gate-shaped frame 31 installed at the discharge end of the supply conveyor 7. The above-mentioned hopper 3a is installed below the guide rollers 33a and 33b, which are arranged parallel to each other at a predetermined interval, and receive the powder raw material contained in the opened bag W. There is. A gate-shaped frame 35 is installed on the gate-shaped frame 31, and this frame 35 includes a bag-opening cutter device 36 for opening the top side of the bag body W, and a paper bag from which the powder raw material has been discharged. A movable payout play (37a, 37b) that payout outside the machine is installed in parallel.

As shown in FIG. 4, a support shaft 40 is installed horizontally on the brackets 38a and 38b that extend inside the gate-shaped frame 35 through a conveyor frame 39. Sprocket 41 near the part
a and 41b are provided. This sprocket 41a
.

An endless chain 34 is looped around 41b, and the delivery plates 37a and 37b are provided. The dispensing plates 37a and 37b are connected to the chain 34.
The chain 34 is supported by and is configured to be rotated by a drive motor 45, which will be described later.

Further, the cutter 42 of the bag opening cutter device 36 is connected to a dispensing plate 373, 37, as shown in FIGS. 3 and 4.
The chain 43 is attached to three locations on a chain 43 that moves simultaneously between conveyor frames 39 and 43. The sprockets 47a and 47b of a drive shaft 46 of a drive motor 45 equipped with a reduction gear are connected to sprockets 47a and 47b via chains 48a and 48b. In addition, the drive motor 4 with a reduction gear
Reference numeral 5 is provided with one each for a cutter and one for a payout plate (not shown).

Therefore, when the drive motor 45 with a speed reducer rotates at a constant speed, the sprocket 44a.

Sprocket 47. The cutter 47 rotates in a fixed direction, in this embodiment, rightward, via the chain 48 to open the top side of the bag body W. Then, the payout play is performed by the rotation of the drive motor (not shown) (373)
．． 37b moves at the same time.

Note that the cutter 37 and the payout plate 37a.

The positional relationship with 37b is determined to be on standby by a detector such as a limit switch.

Therefore, after the bag body W is opened by the cutter 42 and the stored powder raw material is discharged, only the paper bag can be discharged out of the machine on the right side of FIG. 4. next,
A rotatable discharge means 50 for holding and folding the bag body W opened by the bag opening cutter device 36 is shown in FIGS. 3 and 4.
As shown in the figure, a rotational support shaft 53 is provided on a frame 51 extending from both sides of the guide rollers 33a, 33b via bearings 52, and the base end of an arm 54 is fixed to this rotational support shaft 53. Moreover, two claws 55 that pierce the bag body W are arranged opposite to each other on the lower surface of the tip side.

A gear 56 is fixed to one end of the rotation support shaft 53, and this gear 56 meshes with a rack 58 provided at the tip of a rod 57a of a cylinder 57. The cylinder 57 is installed on a bracket 59 that is integrally fixed to the frame 51.

Further, an arm 61 to which a presser plate 60 is attached is fixed to the rotation support shaft 53, with the ejection means 50 interposed therebetween.
When piercing the bag W with the nail 55, the upper surface of the bag W is pressed down.

Next, the operation of the present invention having the above configuration will be explained.

In FIG. 1, the bag W containing the powder raw material is the roller conveyor 24a of the supply conveyor 1.

24b, the bag is transported from the left side to the right side on the second side, and the bag is opened by the bag opening machine 6.
When the guide rollers 33a and 33b are supplied and stopped, the guide rollers 33a and 33a are
, 33b, the cutter 26 of the bag-opening cutter device 21, which has been waiting at the lower part of the bag-opening cutter device 21, rises above the guide rollers 33a and 33b by the extension of the cylinder 27.

Then, by contracting the cylinder 22 from this state, the cutter 26 cuts the bottom side of the bag body W while moving from the right side to the left side in FIG. 4 to open the bag.

On the other hand, when the drive motor 45 starts rotating, the cutter 42 provided on the chain 43 of the bag opening cutter device 36 located on the guide rollers 33a and 33b is activated.
It rotates counterclockwise in accordance with the rotational drive of step 3, and while moving from the left side to the right side in FIG. 4, the upper surface of the bag body W is cut open to open the bag.

In this way, the upper and lower surfaces of the bag W are cut by the bag opening cutter device 21.
．． When the bag is opened by 36, the drive motor 45 and the cylinder 32 are temporarily stopped, and from this state, the cylinders 57 of the ejection means provided on both sides of the guide rollers 33a and 33b start to extend, and the cylinders 57 equipped with the claws 55 start to extend. The arm 54 is rotated in the direction of the arrow in FIG. 4, and the claw 55 is pierced into the upper surface of the bag body W.

At this time, the presser plate 60 provided on the rotation support shaft 53 also rotates, and the upper surface of the bag body W is moved by the guide roller 333.3.
It is pressed against the 3b side.

Then, the arm 54 with the claw 55 pierced therein is further rotated and the bag W is folded in half while being rotated downward from the gap between the guide rollers 33a and 33b. The cut end of the bag is discharged into the hopper 3a. In addition, if the powder raw material is not discharged at once, the cylinder 57 is repeatedly expanded and contracted, and the powder raw material is discharged while swinging the bag W pierced by the claw 55 in the vertical direction.

In this way, all the powder raw materials are discharged from the folded bag body W, and only the paper bag remains on the guide rollers 33a, 33.
When it remains on the chain 34, the stopped drive motor (not shown) is rotated again, and the guide roller 3 is moved by the dispensing plates 37a and 37b provided on the chain 34.
The empty paper bags on 3a and 33b are dragged and moved to the right in FIG. 4 and discharged from the machine.

When the discharge operation of the powder raw material as described above is completed and the paper bag is discharged outside the machine, the bag body W is sent onto the guide rollers 33a and 33b again by the supply conveyor 7.

At this time, the cutter 26 of the bag opening cutter device 21 is moved by the extension operation of the cylinder 22 while being positioned below the guide rollers 33a, 33b.
It is waiting while being moved to the lower right end of Figure 4.

Under the bag opening operation as described above, the powder raw material inside the bag body W is discharged into each surge tank 3, but as described above, a plurality of surge tanks 3 are arranged in a straight line. When the bag W is opened to supply powder raw material to the remaining amount of powder raw material in each surge tank 3, an output signal is output from the raw material level meter 8 provided in each surge tank 3. Then, based on this signal, the bag opening machine 6 is automatically moved to each surge tank 3, where the bags W supplied from the supply conveyor 7 are opened as described above, and the powder raw materials are automatically removed. This causes the waste to be discharged.

Since such an operation is performed in each surge tank 3, one bag opening machine 6 can be used in common, and as a result, there is no need for human intervention (and there is also no delay in the supply of powder raw materials). This makes it possible to efficiently supply powder raw materials.

[Effects of the Invention] The present invention provides an upper force at the input portion of a plurality of surge tanks equipped with raw material level meters and arranged in a straight line as described above.
A guide rail on which a bag opening machine is movably mounted is installed along each surge tank, a powder raw material supply conveyor is installed on the side of each surge tank in a direction perpendicular to the guide rail, and the Since the bag opening machine is configured to be moved to each surge tank by the output signal from the raw material level meter provided inside each surge tank, the following excellent effects are achieved.

(This eliminates the need for 81 people to manually open the bag using a scalpel, and the safety issue has also been resolved.

Since we were able to automate the series of operations from supplying bags to discharging them, delays in supplying raw materials were eliminated and productivity improved.

(C) The work of placing the bags on the supply conveyor can be performed in a concentrated manner, resulting in labor savings.

(d) Since there are fewer workers involved in the work, the problem of pollution caused by dust can be improved.

(e) Also, since one worker can see multiple surge tanks, it is possible to save labor and improve work efficiency.

[Brief explanation of drawings]

Fig. 1 is a schematic front view of a feeding device embodying the present invention, Fig. 2 is a schematic plan view of Fig. 1, and Fig. 3 is a connection to a feeding conveyor that sequentially supplies bags containing powder raw materials. A side view of the bag opening device, FIG. 4 is a partially vertical side view of FIG. 3. 7... Supply conveyor, 11.26... Bag opening cutter device, 23a, 23b... Guide roller, 24...
Accommodation hopper, 40...Discharge means, W...Bag body.

Claims (1)

[Claims] A guide rail on which a bag opening machine is movably mounted along each surge tank is installed above the input section of a plurality of surge tanks that are equipped with a raw material level meter and are arranged linearly. A powder raw material supply conveyor is installed on the side of the guide rail in a direction perpendicular to the guide rail, and the bag opening machine is moved to each surge tank by the output signal from the raw material level meter installed inside each surge tank. A powder raw material supply device characterized in that it is configured to be moved.