JPH08216148A - Pressure type kneader - Google Patents

Abstract

PURPOSE: To perform safely and easily cleaning work for powder adhered on the underside of a pressing shelf and to provide a pressure type kneader from which the powder does not scatter to the outside by making the powder in a mixing tank fly up and scatter to the outside from the gap of a dust cover during a pressing lid is lowered in the pressure type kneader. CONSTITUTION: A supporting part 17 extending upward from both left and right side edges of a pressing shelf 16 for supporting an air cylinder 14 driving up and down a pressing lid 13 is provided integrally with a frame main body 18 and a frame opening part is formed on three faces, namely, both left and right side faces and the front face of a space part 22 from the upper face opening part 12 to the pressing shelf 16 of a mixing tank 11 and a freely switchable dust cover 19 is provided on the frame opening part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure type kneader for kneading highly viscous materials such as rubber and plastic.

[0002]

2. Description of the Related Art A pressure type kneader has a pressure lid that penetrates into an opening on the upper surface of a mixing tank to pressurize the materials in the tank. When the raw material is turned over or charged into the mixing tank, it has to be held at a position sufficiently higher than the opening, so that a lifting mechanism for the pressure lid is required.

FIG. 1 shows a conventional example of a pressure type kneader. The mixing tank 1 has an upper surface opening 2 and can be rotated within a predetermined range around one of the two rotor shafts 3A and 3B penetrating the side wall of the tank 1. The pressure lid 4 is supported by a lifting shaft 5, and the lifting shaft 5 is connected to a piston shaft of an air cylinder 6. The air cylinder 6 allows the pressing lid 4 to stop at any position between the lower limit position shown by the solid line and the upper limit position shown by the chain line. In order to support the air cylinder 6 and the pressure lid 4 above the mixing tank 1, a frame 7 standing upright from the rear of the mixing tank 1, a pressure shelf 8 projecting forward from the upright frame 7, and a pressure shelf 8 are provided. Supporting portions 9 extending downward from the left and right edges and the front edge of the pressure shelf 8 for supporting the
Are provided integrally.

The dust cover 10 for blocking the space between the mixing tank 1 and the support portion 9 of the pressure shelf from the outside is a member having a U-shaped cross section along the outer periphery of the support portion 9. ,
It is vertically moved up and down by an elevating mechanism (not shown), and abuts on the upper surface of the mixing tank 1 at the lower position.

When a pressure type kneader is used, raw materials such as powder and liquid are put into the mixing tank 1 and then the dust cover 10 is lowered, and then the pressure lid 4 is lowered to lower the tank 1.
Occlude the upper surface of. At that time, the powder in the tank is pushed up by being pressed by the pressure lid 4 that descends, and then falls on the upper surface of the pressure lid 4. In addition, the powder may scatter from a slight gap between the dust cover 10 and the support portion 9 to contaminate the surrounding environment.

The powder accumulated on the upper surface and the side surface of the pressure lid and the powder adhered on the lower surface of the pressure shelf and the inner surface of the supporting portion must be cleaned from time to time. Even if it is moved to, the support portion extends downward, so the space into which the worker's arm can enter is very small and the workability is poor, and it is dangerous. Further, in order to clean the inner surface of the dust cover, the dust cover had to be removed.

[0007]

Therefore, according to the present invention, the powder such as the upper surface and the side surface of the pressure lid, the lower surface of the pressure shelf, the inner surface of the dust cover, etc. is likely to be deposited or adhered, and the cleaning work is often required. The problem to be solved is to provide a pressure type kneader that can perform work safely and easily. Another object is to provide a pressure type kneader in which there is no gap around the dust cover and powder or the like does not scatter outside during kneading.

[0008]

[Function] Since the conventional support part that supports the pressure shelf from below has been eliminated, both the left and right sides of the pressure lid and the three front sides are opened,
There are no obstacles for cleaning work. If the dust cover is changed from the conventional vertical sliding type to the left and right open type, the gap required for sliding is unnecessary, and packing can be provided on the contact surface between the open / close cover and the frame body.

[0009]

FIG. 2 shows a perspective view of an embodiment of the present invention excluding the dust cover, and FIG. 3 shows a perspective view of the dust cover in an open state.

The mixing tank 11 has a box shape having a rectangular opening 12 formed on the upper surface thereof, and a parallel biaxial rotor is provided in the tank.
A rotor shaft penetrates the side wall and is connected to a drive mechanism such as a motor and a speed reducer. The pressure lid 13 that penetrates the opening 12 to pressurize the inside of the tank is provided with an air cylinder 14 arranged above.
Is connected to the piston shaft 15 and is driven in the vertical direction.
In order to support the pressure lid 13 and its drive mechanism, the mixing tank 11
A pressure shelf 16 protruding forward from an upper portion of a frame main portion 18 standing upright from the base behind the pressure shelf 16 is provided.
Support portions 17 extending upward from both left and right edges of the frame are integrally provided with the frame main portion 18. As a result, the pressure shelf 16
There is no frame member below the pressure lid 13 for supporting the weight of the pressure lid 13. 22 is formed.

A dust cover 19 is provided so as to cover the left and right side surfaces and the front surface of the space 22. The dust cover 19 is, for example, a left and right open type, and is divided into left and right halves (19A, 19B) as shown in the plan view of FIG. 4, and hinges 20A, 20 are provided along the rear edges of the left and right side surfaces.
B is rotatably supported by B, and packing 21 is provided along the outer periphery of the inner surface of the cover, and when closed, the dust cover 1
A gap is not formed between 9 and its peripheral members.

For example, as shown in FIG. 5, an inclined surface 22 of, for example, 45 ° is provided on the opening surface of the mixing tank, and the lower edge of the dust cover 19 (A, B) is bent in parallel with the inclined surface 22. A packing 21 is provided on the opposite surface. Further, the inner surface of the upper edge of the dust cover 19 (A, B) faces the pressure frame, and the packing 21 is provided on the facing surface.

As shown in FIG. 6, the dust cover of the present invention can be carried out by raising and lowering a U-shaped transverse cross-section as is conventionally done by an elevation mechanism. Further, in the case of a small kneader, the detachable type can be used.

[0014]

According to the present invention, when the dust cover is opened or removed, the left and right sides of the pressure lid and the front are provided between the lower surface of the pressure shelf supporting the pressure lid and the upper surface of the mixing tank. There is no obstruction, and cleaning work can be performed easily, safely and completely.

When the dust cover has a double-open structure and a packing is provided on the outer circumference of the inner surface of the dust cover, the structure is simple without a power unit for opening and closing in the case of a small machine. Do not scatter to.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a side view showing a conventional example.

FIG. 2 is a perspective view showing a state in which the dust cover of the embodiment of the present invention is omitted.

FIG. 3 is a perspective view showing a state in which the dust cover of the embodiment of the present invention is opened.

FIG. 4 is a plan view of a main part of the embodiment shown in FIG.

FIG. 5 is a partial cross-sectional view showing a state in which the dust cover of the embodiment of the present invention is closed.

FIG. 6 is a perspective view showing another embodiment of the dust cover of the present invention.

[Explanation of symbols]

 11 ... ・ Mixing tank 12 ・ ・ ・ ・ ・ ・ Opening 13 ・ ・ ・ ・ Pressure lid 14 ・ ・ ・ ・ Air cylinder 15 ・ ・ ・ ・ Piston shaft 16 ・ ・ ・ ・ ・ ・ Pressure shelf 17 ・ ・ ・ ・ ・ ・ Support Part 18 ... Frame main part 19 (A, B) ... Dust cover 20 (A, B) ... Hinge 21 ... Packing

Claims (2)

[Claims] 1. A mixing tank having an opening on the upper surface, a pressure lid penetrating into the opening to pressurize the inside of the tank, and a pressure shelf for supporting a power source for vertically driving the pressure lid. In the pressure type kneader, a support portion extending upward from both left and right edges of the pressure shelf is integrally provided with a frame supporting the pressure shelf, and both left and right side surfaces between the upper surface of the mixing tank and the pressure shelf and A pressurizing kneader characterized in that frame openings are formed on three front surfaces, and a dust gover that can be opened and closed is provided in the frame openings. 2. The pressure type kneader according to claim 1, wherein the dust cover has a left-right opening / closing structure having a hinge provided on a rear side of a side surface of the frame opening as a pivot.