JPH0213941Y2 - - Google Patents

Description

[Detailed description of the invention] This invention enables accurate measurement of the weight of a viscous fluid, such as pigment, when mixing it with other materials to be mixed at a certain ratio, and ensures that the total amount measured is accurate. This relates to a device that is put into a mixer.

Conventionally, in order to feed the above-mentioned viscous fluid raw materials into a mixer, a running rail for a measuring container was laid from the bottom of the hopper of the viscous fluid to the top of the mixer, and an automatic feeder mechanism was used to feed the raw material of the viscous fluid into the measuring container below the hopper. After a fixed amount of the raw material has been supplied, it is moved to the upper part of the mixer, and the bottom plate of the measuring container is opened, or the measuring container is turned sideways and the raw material inside is introduced.

However, in the conventional means described above, the raw material is quantitatively supplied into the measuring container by an automatic feeder mechanism, so the supply is determined by the rotation speed and the situation at the feeder outlet of the viscous fluid raw material. There was a drawback that the weight was not constant and there were variations between them.

In addition, even if the exact amount of raw material is supplied, when it is poured from a measuring container, the raw material remains attached to the inner wall of the container and the entire amount cannot be poured precisely.
There was a problem in that the mixing ratio with other mixtures in the mixer changed, impairing the quality of the product.

This proposal solves the above problems by accurately measuring the amount of raw material for viscous fluid supplied from the hopper to the measuring container, and stopping the supply.
It is an object of the present invention to provide a highly accurate metering device capable of pouring the measured total amount into a mixer.

The drawings show one embodiment of the present invention, and will be explained below. In FIGS. As shown in the figure, it moves back and forth between directly below the hopper 1 and above the mixer m.

That is, a pair of guide rails 3 are constructed below the discharge port 1' of the hopper 1, one end of which is rotatably pivoted to a pedestal 4, and the vicinity of the other end is connected to an air cylinder 5. The guide rail 3 is connected to and supported by a rod part, and by the operation of an air cylinder 5, this guide rail 3 can move up and down using the pivot part of the pedestal 4 as a fulcrum, and the end part of the guide rail 3 is connected to the mixer m. It is appropriately extended upwards. A traveling machine base 6 is attached to this guide rail 3 so as to be freely movable, and the entire traveling machine base 6 is slightly advanced toward the mixer m side by the operation of an air cylinder 7 from a fixed position directly below the discharge port 1'. Then, by the operation of the air cylinder 8, the lower traveling machine base 6a moves further forward together with the guide rail 9, and by the reverse operation of each of the air cylinders 7 and 8, it returns to the previous position. The running mechanism has a generally known configuration. In this case, the air cylinder 5 operates immediately before the entire traveling machine base 6 moves forward to slightly rotate the guide rail 3 upward.
The guide rail 3 is set to rotate downward when the traveling machine base 6 returns to its normal position.

As shown in FIGS. 3 to 5, a rotary actuator 11 is attached to the front frame 10 of the lower traveling machine base 6a that reciprocates in this way, and protrudes forward from the through hole 12 of the front frame 10. A connecting boss portion 14' of a clamping portion frame 14 is integrally fixed to the rotating shaft 13. As shown in FIG. 4, the clamping part frame 14 has a U-shape when viewed from above, and fixing plates 15 are fixed to both upper and lower surfaces between the opposite ends of the clamping part frame 14. A pair of left and right rotating bodies 16 are pivotally connected between them by a shaft 17, and a connecting arm 18 and a clamping arm 19 are fixed to each rotating body 16, respectively. Further, as shown in FIG. 4, a fine movement air cylinder 20 is attached to the central recess of the clamping frame 14, and its rod portion 21 is inserted into the inner space between the upper and lower fixed plates 15 to accommodate each rotary body 16. The connecting arms 18 and the connecting shafts 22 are pivotally connected to each other so as to be rotatable.

Further, 23 is a measuring container, and as shown in FIG. 3, the inner surface of this container is covered with a cover 24 made of moisture-proof woven fabric, rubber, or synthetic resin sheet. , this cover 24
The center part of the bottom of the container is secured with a bolt 26 via a presser metal 25, and the edge folded back to the outer periphery of the open end of the container is only secured with a fastening band 27. Most of the portion that is in contact with the inner wall surface of the container can be separated from this inner wall surface. Furthermore, an air nozzle 28 that opens inside is attached to the body wall of the measuring container 23 at an arbitrary position.
It is connected to an air compressor (not shown) by an air hose 29.

In addition, as an embodiment in this case, a plurality of steel balls 30 can be movably enclosed between the cover 24 and the inner wall surface of the container.

As shown in FIG. 3, a clamping body 31 having an E-shape when viewed from the side is integrally fixed to the lower surface of the bottom plate of this measuring container 23 with the bolts 26, and has a radius of curvature of the outer circumference of the central clamped part 31a. is made to coincide with the radius of curvature of the clamping surface 19' formed on each clamping arm 19. In the figure, 32 is a weight measuring device installed directly below the discharge port 1' of the hopper, and 32a is a table for placing a weighed object.

Next, the operation of the device of the present invention configured as described above will be explained. In the state shown in the first diagram in which the measuring container 23 is stopped directly below the discharge port 1' of the hopper,
As mentioned above, since the air cylinder 5 is retracted and the guide rail 3 is rotated downward about the pivot point of the pedestal 4, the bottom wheel plate 31b of the clamping body 31 is used as the mounting base for the weight measuring device 32. 32a, and the measuring container 23 is placed on the above-mentioned placing stand. At this time, the fine movement air cylinder 20 operates to press, and its rod portion 21 presses the connecting shaft 22, so each connecting arm 18 of each rotating body 16 connected thereto is also pressed, and each rotating body 16 rotates. Each clamping arm 19 opens as shown in FIG.
The clamping surface 19' is the clamped part 31a of the clamping body 31.
completely away from. Therefore, there is nothing that comes into contact with the weighing container 23 on the mounting table 32a.
Only its tare weight is measured.

In this state, the viscous fluid is discharged and supplied from the discharge port 1' of the hopper 1 to the measuring container 23 by an automatic feeder mechanism (not shown), and when the amount reaches a predetermined weight, the discharge is stopped.

Next, the fine movement air cylinder 20 shifts to the retraction operation, so each rotating body 16 rotates in the opposite direction to the above, and each clamping arm 19 closes, as shown in the fifth figure.
The clamping surface 19' is the clamped part 31a of the clamping body 31.
are clamped from the left and right. Thereafter, as the air cylinder 5 moves upward as described above, the guide rail 3 slightly rises and rotates around the pivot point of the pedestal 4 as a fulcrum.
4. The clamping arm 19 also rises together, and the clamping body 31
The bottom ring plate 31b is separated from the mounting table 32a, and the weighing container 23 floats movably.

Next, the air cylinders 7 and 8 are activated to move the traveling machine base 6 toward the mixer m, and the rotary actuator 11 is activated at a predetermined position above the mixer to rotate the rotation shaft 13. As a result, the clamping part frame 14, clamping arm 19, and measuring container 23 rotate together as shown by arrow A in FIG. 5, and stop at a position reversed by 180 degrees.

In response to this reverse rotation, the viscous fluid in the measuring container 23 flows downward and becomes biased, and finally flows out from the open end into the mixer m, but at this time, the measuring container 23 is at least 90 When the cover 24 is rotated beyond this angle, air is ejected from the air nozzle 28, and when the rotation progresses further and the cover 24 is rotated 180 degrees, the air completely expands the cover 24 as shown in Fig. 6, causing air to stick to the cover. Most of the viscous fluid will fall due to its own weight, making it possible to accurately charge and discharge the measured amount into the mixer.

Also, a steel ball 30 is placed inside the cover 24.
In this case, the steel ball 30 fills the gap between the inner wall surface on the descending side of the measuring container 23 and the cover 24, which is gradually formed by the air in response to this reverse rotation. It moves and falls to the open end of the container. For this reason, the cover 24 on the descending side
The upper viscous fluid is scraped off by the frictional force of the steel balls 30, making it possible to discharge the viscous fluid more reliably.

When the injection of the viscous fluid is finished, the air jet stops, the rotary actuator 11 rotates in the opposite direction, the measuring container 23 returns to its original position, and the cover 24 automatically comes into contact with the inner wall surface of the measuring container 23. By the next retracting operation of the air cylinders 7 and 8, the traveling machine base 6 returns to the position immediately below the discharge port 1' of the hopper 1.

Note that the above-mentioned reversal rotation may be performed by stopping the traveling machine base 6 at a fixed position above the mixer, but if the traveling machine base 6 is reversed while running over almost the entire length of the mixer diameter, The viscous fluid does not accumulate in one place in the mixer, and can be fed evenly.

As mentioned above, in the device of the present invention, when the weighing container is placed on the mounting table of the weight measuring device, the clamping arm that clamps the weighing container is completely opened and separated so that there is no contact with it. Therefore, the tare weight of the measuring container becomes accurate, the volume of the viscous fluid can be measured accurately, and there is an effect that errors in the mixing ratio can be prevented. In addition, a removable cover is attached to the inner wall of the weighing container, and an air nozzle is attached to the body wall of the container to blow out air from an inversion position of at least 90 degrees, so that the cover expands as the inversion progresses. In addition, if steel balls are sealed inside the cover, the frictional force of the steel balls sliding down the descending side of the container causes most of the viscous fluid attached to the mixer to fall into the mixer. Since the viscous fluid on the cover is scraped off, there is an effect that a predetermined measured amount of viscous fluid can be reliably thrown into the mixer.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a general front view of the entire device, FIG. 2 is a side view, FIG. 3 is a front view of a part of the principal part of the proposed device, and FIG. is a cross-sectional view of the open state taken along the line A-A in Figure 3;
The figure is the same cross-sectional view as Fig. 4 in the pinched state, and the same sectional view as Fig. 6.
This figure is the same sectional view as FIG. 3 showing the inverted state of the measuring container. 6... Traveling machine base, 11... Rotary actuator, 14... Clipping part frame, 19... Clipping arm, 20... Fine movement air cylinder, 24... Cover, 28... Air nozzle, 30... Steel Ball, 31... Clamping body, 32... Weight measuring device, 32
a... Placement table, 23... Measuring container.

Claims (1)

[Claims for Utility Model Registration] (1) A rotary actuator 11 is attached to the front part of a traveling machine base 6 that reciprocates on a guide rail 3 whose one end moves up and down by an air cylinder 5, A clipping frame 14 having a shape of a letter is fixed, a rotating body 16 is pivotally attached to the ends of both sides, a clamping arm 19 is fixed to this rotating body, and a fine movement air cylinder 20 is attached and connected to the clamping frame. The clamping part frame is opened and closed by the arm 18, and the measuring container 23 has a clamping body 31 at the bottom and an air nozzle 28 opening inside the body wall. A loose cover 24 is stretched, and when the weighing container is placed on the weight measuring device 32 and the viscous fluid is supplied, one end of the guide rail is lowered and the clamping frame that sandwiches the clamping cylinder is opened, and after the quantitative supply is completed, the clamping frame is opened. As the loading arm closes and pinches the clamping cylinder, one end of the guide rail rises, the traveling machine platform moves onto the mixer, the rotary actuator operates, the weighing container is reversed 180 degrees, and the air nozzle releases the inner wall of the weighing container. A viscous fluid metering device characterized by blowing out air between a cover and a cover. (2) A viscous fluid metering device according to claim 1, wherein a plurality of steel balls 30 are enclosed between the inner wall surface of the metering container and the cover.