JPH09905A - Oscillation type chemicals mixer - Google Patents

Abstract

PURPOSE: To provide an oscillation type chemicals mixer using for rubber in which the sticking of chemicals in a mixing tank is eliminated to dispense with the cleaning work. CONSTITUTION: This oscillation type chemical mixer in which a mixing tank 6 of its own is constituted of a mixing tank wall 4 and an oscillation plate 5 connected with the lower edge of the mixing tank wall 4 at the outer periphery and forming the back surface of the mixing tank 6 and which is intended for mixing two or more kinds of chemicals, the whole mixing tank wall 4 is made of rubber and also the upper surface of the oscillation plate 5 is covered with a rubber sheet 7, or a lower part 1 of the mixing tank wall 4 is made of rubber, an upper part 2 of the mixing tank wall 4 connected to it is formed into an approximately cylindrical plate of rigidity, the whole surface of the inner periphery of the approximately cylindrical plate is covered with a rubber sheet 3 and also the upper surface of the oscillation plate 5 is covered with a rubber sheet 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a rocking type chemical mixing device for mixing two or more kinds of chemicals used for rubber kneading as a preparatory step for rubber kneading.

[0002]

Rubber used in tires and the like can be obtained by mixing raw rubber with several chemicals of two or more and kneading them. At this time, it is important to thoroughly disperse the raw rubber and several kinds of chemicals and mix them uniformly. For this reason, as a preparatory step before mixing several kinds of chemicals into the raw rubber, a predetermined amount of each of the several kinds of chemicals is put into the mixing tank of the chemical mixing device in advance and well mixed, and several kinds of chemicals are mixed. Make a blended drug that is uniformly mixed. There are many kinds of this chemical compound, and each chemical type and mixing ratio differ depending on the use of rubber. Also, in order that the chemicals and the raw rubber are kneaded uniformly and react well,
The individual chemicals that make up the compounded chemicals used for rubber kneading are often very small powders, and often have the property of easily adhering.

There is a rocking type chemical mixing apparatus as one type of chemical mixing apparatus. Conventionally, some mixing tank walls that form part of an oscillating chemical mixing device are entirely made of a flexible material such as rubber, while only the lower part of the mixing tank wall is made of rubber or the like. Some of them are made of flexible material, and the upper part of the mixing tank wall is made of a metal plate instead of rubber. Further, the rocking plate, which is arranged on the lower surface of the mixing tank and whose outer periphery is connected to the lower edge of the mixing tank wall, is made of a metal plate or the like instead of rubber. Therefore, the conventional rocking type chemical mixing device has the following problems.

[0004]

Some types of chemicals have fine and fine particles and are very easily adhered.
Further, as described above, there is a phenomenon that chemicals are particularly likely to adhere to the surface of the portion of the conventional rocking type chemical mixing device made of a plate such as metal. Then, once the chemical adheres, the adhered portion tends to grow thick in layers. For this reason, when the oscillating plate of the chemical mixing device is oscillated for a predetermined time to mix the chemicals, the mixed tank is tumbled to take out the obtained mixed chemicals and the mixed chemicals are discharged. Frequently, a considerable amount of chemicals adheres and remains on the surface of parts made of plates. When such adhesion of chemicals occurs frequently, new chemicals of the next new type obtained by mixing a predetermined amount of new chemicals into a mixing tank and shaking the rocking plate for a predetermined time are mixed. Frequently, the chemicals that were previously attached are mixed in. When chemicals other than the specified chemicals are mixed in the compounded chemicals in this way, the contamination is very high depending on the chemicals, and when the compounded chemicals and the raw rubber are kneaded, the properties of the rubber are seriously affected. There are many things that have a bad effect.

Further, when the mixing tank is turned over and the mixed chemical is discharged to the mixing can, the weight of the mixing can and the mixed chemical discharged to the mixing can are measured. If a lump of the chemicals attached to the plate of the item dropped after the measurement was judged, it resulted in erroneous weighing, and such erroneous weighing frequently occurred. Then, the compounded can which has been erroneously weighed is temporarily held, and it is necessary to specially inspect and judge whether or not it can be used. For this reason, an extra man-hour is required.
Therefore, in order to avoid mixing of non-specified chemicals and to avoid the above-mentioned erroneous weighing, be sure to clean the inside of the mixing tank before discharging chemicals for producing the next chemical composition after discharging the previous chemical composition. There is a big problem that this cleaning work is a wasteful work that does not contribute to the production of 10 or more times a day, 10 or more minutes per time, or a total of 100 or 10 minutes every day. . Therefore, an object of the present invention is to provide a rocking type chemical mixing device for rubber that eliminates the adhesion of chemicals in the mixing tank and does not require cleaning work.

[0006]

According to the first aspect of the present invention, such a purpose is to form a lower surface of the mixing tank by connecting its own mixing tank with the mixing tank wall and the outer periphery of the lower edge of the mixing tank wall. In a rocking type chemical mixing device for mixing two or more kinds of chemicals, the mixing tank wall is entirely made of rubber, and a rubber sheet is provided on an upper surface of the rocking plate. Can be achieved by obtaining an optimal rocking type chemical mixing device for mixing the chemicals for rubber kneading without covering the chemicals on the wall surface of the mixing tank.

Further, as described in claim 2, such an object is that the mixing tank of its own is connected to the mixing tank wall and the outer periphery of the lower edge of the mixing tank wall to form the lower surface of the mixing tank. In a rocking type chemical mixing device for mixing two or more kinds of chemicals, a lower part of the mixing vessel wall is made of rubber, and an upper part of the mixing vessel wall connected to the mixing vessel wall is made of a rigid substantially cylindrical shape. And a rubber sheet is stretched over the entire inner circumference of this cylindrical plate, and the upper surface of the rocking plate is covered with a rubber sheet,
This can be achieved by obtaining an optimal rocking type chemical mixing device for mixing chemicals for rubber kneading without the chemicals adhering to the wall surface of the mixing tank.

[0008]

Next, the operation of the present invention will be described. The oscillating chemical mixing device has a support shaft fixed to the lower side of the oscillating plate that forms the lower surface of the mixing tank, and when this support shaft rotates in a conical shape with its apex directly above, Although the moving plate does not rotate around the spindle, it violently swings and swivels around, moving two or more types of chemicals that have been thrown into the mixing tank sequentially from below to move and mix the chemicals while diffusing them. To do. Further, this rocking type chemical mixing device does not have a stirring blade for cutting into the charged chemicals, and a flat or spherical dish-shaped shaking that constitutes the lower surface of the mixing tank. It is a moving plate that jumps up and diffusively mixes chemicals.

In the above-mentioned rocking type chemical mixing apparatus, the inventors have conducted various experiments earnestly on how to prevent chemicals from adhering to the inner surface of the mixing tank. As one of the experiments, when the side of the wall of the mixing tank that comes into contact with the chemicals is made of rubber and the inner surface of the mixing tank is made of rubber by covering the upper surface of the oscillating plate with a rubber sheet, When the rubber surface was stroked by hand, a faint trace of the chemical was recognized. One of the reasons for this is that if the inner surface of the mixing tank is made of metal, static electricity is generated in the part made of a metal plate on the inner surface of the mixing tank due to the friction between the inner surface of the mixing tank and the chemicals. It was adhered, but it is considered that the adhesion effect due to static electricity was reduced by making the inner surface of the mixing tank rubber. Another reason is considered to be the separation action of the rubber surface on the rubber kneading chemicals. And, among various rubbers, it was found that butyl rubber containing butyl as a main component is particularly preferable because of its high flexibility. As described above, according to the rocking type chemical mixing apparatus of the present invention, even if the chemicals for rubber which are very easily adhered do not adhere to the inner surface of the mixing tank, the rocking type chemical mixing apparatus for rubber is most suitable. Become.

Here, when the mixing tank wall is entirely made of rubber, there is no problem of chemicals adhering to the mixing tank wall, but when the lower part of the mixing tank wall is rubber and the upper part is metal, there is an upper part. Adhesion of chemicals occurs on the metal part of. Therefore, by sticking a rubber sheet on the entire inner circumference of the cylindrical metal plate on the upper part of the mixing tank wall, the adhesion of chemicals to the inner surface of the mixing tank is eliminated.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment according to the invention of claim 2 will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes
A lower part of the mixing tank wall made of vulcanized flexible rubber, and a reference numeral 2 is an upper part of the mixing tank wall in which a plate (for example, a stainless plate) made of a rigid metal is formed into a substantially cylindrical shape. Although the upper surface of the tank wall upper part 2 is an opening, the mixing tank wall upper part 2
The lower edge and the upper edge of the lower part 1 of the mixing tank wall are connected at the entire circumference, and a rubber sheet 3 made of vulcanized rubber is stretched over the entire inner circumference of the upper part 2 of the mixing tank wall. The mixing tank wall lower part 1, the mixing tank wall upper part 2 and the rubber sheet 3 form a mixing tank wall 4. Reference numeral 5 denotes a rocking plate which is arranged on the lower surface of the mixing tank 6 and is made of a rigid plate (for example, a stainless plate) made of metal or the like. The rocking plate 5 has a spherical shape with a convex portion directed upward. The outer periphery of the rocking plate 5 is connected to the lower edge of the lower part 1 of the mixing tank wall 1 over the entire circumference. Reference numeral 7 is a rubber sheet made of vulcanized rubber covering the entire upper surface of the rocking plate 5. The mixing tank wall 4, the rocking plate 5, and the rubber sheet 7 constitute a mixing tank 6.

Reference numeral 8 is a support shaft fixed to the lower side of the rocking plate 5, and the support shaft 8 is rotatably supported by a bearing-containing support bearing cylinder 9. Reference numeral 10 is a frame 1
Output shaft 1 of motor 11 fixed vertically to 3
2 is an arm that is eccentrically fixed in a cantilevered manner at the tip of 2 and the lower end of the support bearing cylinder 9 is tilted on the upper surface of this arm 10 in the direction in which the axis of the support shaft 8 intersects the axis of the output shaft 12. It is fixed. While the frame 13 supports the upper part 2 of the mixing tank wall at the upper part thereof, cantilevered shafts 14 and 14 are horizontally fixed to both side surfaces of the frame 13 toward the outside, respectively. It is rotatably fixed to the upper surfaces of the fixed frames 15 and 15, respectively. Then, the supporting shaft 8, the supporting bearing cylinder 9, the arm 10, the motor 11, and the output shaft 12 constitute the rocking device 16, and the mixing tank 6, the rocking device 16, and the frame 1 are provided.
3, the shafts 14 and 14 and the fixed frames 15 and 15 constitute an oscillating chemical mixing device as a whole.

Here, in this embodiment, the rubber sheets 3 and 7 and the lower portion 1 of the wall of the mixing tank are cut into several sheets of butyl rubber and then joined to form a shape suitable for the shape of the mixing tank 6. Each is formed. However, it is also possible to integrally form the rubber sheets 3 and 7 and the lower part 1 of the mixing tank wall by vulcanization molding with respective dies having a shape suitable for the shape of the mixing tank 6.

Next, the operation of the above embodiment will be described. First, from the opening of the mixing tank 6, a predetermined amount of chemicals such as sulfur, zinc white, and an antioxidant used for kneading rubber is weighed and sequentially added. Then, the arm 10 that starts the motor 11 and is fixed to the output shaft 12 becomes the support bearing tube 9
When, for example, is swung around 200 revolutions per minute, the axis of the support shaft 8, which is also the axis of the rocking plate 5, draws a conical shape, and the rocking plate 5 makes a vigorous swinging / pivoting motion. However, at this time, the oscillating plate 5 and the support shaft 8 themselves do not rotate around their axes. Therefore, the chemicals located on the rocking plate 5 are
It is strongly bounced up at a certain position, dropped by gravity at an adjacent position, and hits the mixing tank wall 4 at the outer peripheral portion. In this manner, after a lapse of a predetermined time, the introduced chemicals are diffused and mixed in the mixing tank 6, and a uniformly mixed chemical composition is completed. Next, with the rocking device 16 being operated to discharge the obtained blended chemicals,
The mixing tank 6 is turned around the shafts 14 and 14 and falls.

Then, the rubber sheet 3 and the rubber sheet 7 are stretched not only on the inner surface of the lower portion 1 of the mixing tank wall but also on the inner surfaces of the upper portion 2 of the mixing tank wall and the oscillating plate 5, respectively. The surface of the has a good separation property from the chemicals, and the chemicals are not attached, and the chemicals in the mixing tank 6 are all discharged. Therefore, unlike the conventional case, a lump of chemicals is dropped and erroneously weighed, and it is not necessary to clean the inside of the mixing tank 6 after discharging the mixed chemicals, and the next chemical can be sequentially added. For this reason, the above-mentioned problems are solved, and the wasteful work of hundreds and ten minutes that is required every day is eliminated.
You can get a big effect.

The mixing tank wall 4 according to the invention of claim 1
Also in the rocking type chemical mixing device characterized in that the whole is made of rubber and the upper surface of the rocking plate 5 is covered with a rubber sheet, the chemicals are kept inside the mixing tank 6 almost in the same manner as the above-mentioned one embodiment. Since the blended chemicals can be discharged without adhering, it is not necessary to clean the inside of the mixing tank 6, and the following chemicals can be sequentially added. Therefore, the effect of the embodiment according to the invention of claim 1 is almost the same as that of the above-mentioned embodiment.

[0017]

As described above, according to the present invention,
Since no chemicals adhere to the inside of the mixing tank, it is not necessary to clean the inside of the mixing tank, and wasteful work is eliminated, which is extremely effective in improving productivity.

[Brief description of drawings]

FIG. 1 shows an embodiment of a rocking type chemical mixing apparatus according to the invention of claim 2 (including a partial cross section).

[Explanation of symbols]

1: Mixing tank wall lower part 2: Mixing tank wall upper part 3: Rubber sheet 4: Mixing tank wall 5: Oscillating plate 6: Mixing tank 7: Rubber sheet 8: Spindle 9: Support bearing cylinder 10: Arm 11: Motor 12 : Output shaft 13: Frame 14: Shaft 15: Fixed frame 16: Oscillating device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Yada 876 Higashinumaminami-cho, Hikone-shi, Shiga (72) Inventor Isao Seguchi 580-57 Nodayama-cho, Hikone-shi, Shiga

Claims (2)

[Claims] 1. A mixing tank of its own comprises a mixing tank wall and an oscillating plate whose outer periphery is continuous with the lower edge of the mixing tank wall to form the lower surface of the mixing tank, and mixes two or more kinds of chemicals. In order to mix the chemicals used for rubber kneading, the mixing tank wall is entirely made of rubber, and the upper surface of the rocking plate is covered with a rubber sheet. Swing-type chemical mixing device. 2. A mixing tank of its own is composed of a mixing tank wall and an oscillating plate whose outer periphery is connected to the lower edge of the mixing tank wall to form the lower surface of the mixing tank, and mixes two or more kinds of chemicals. In the rocking type chemical mixing device for, a lower part of the mixing tank wall is made of rubber, and an upper part of the mixing tank wall continuous with the same is made of a substantially cylindrical plate having rigidity, and a rubber sheet is formed on the entire inner circumference of the cylindrical plate. And an upper surface of the rocking plate covered with a rubber sheet. A rocking type chemical mixing device for mixing chemicals used for rubber kneading.