JPS6121688B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous kneading device, and more particularly to a device that can knead and mash materials under appropriate pressure.

When thoroughly kneading and kneading the materials, and continuously carrying out the process from supplying the materials to discharging them,
It is necessary to send the supplied material to the kneading section with appropriate extrusion pressure. In conventional devices of this type, a material delivery section was also formed on the rotor shaft on which the kneading section was provided, as a means for delivering the material to the kneading section. That is, for example, a helical blade is provided on the rotor shaft, and that part is used as an extrusion screw, and a kneading section is formed in front of the extrusion screw on the same rotor shaft. Therefore, the rotation of the kneading section and the material delivery section due to the rotation of the rotor shaft becomes the same speed, and the material feeding speed by the material delivery section and the kneading speed in the kneading section are adjusted to match the type of material being kneaded. It was not possible to adjust the relationship to suit the purpose of mixing and blending.

The present invention solves the above-mentioned drawbacks of the conventional (device), and provides a kneading device that can freely change the feed speed and kneading speed of the materials, depending on the type of materials to be input and the desired properties after kneading. The purpose is to provide.

In order to achieve the above object, the basic feature of the present invention is that an extrusion screw for feeding the material to the kneading part is provided separately from the rotor shaft provided with the kneading part.

An example will be explained. FIG. 1 is a longitudinal cross-sectional view of the main parts of the device of the embodiment, and FIG. 2 is a cross-sectional view of the main parts.
3 is a rear view of the disc member 8, that is, a view seen from the material supply side, and FIG. 4 is a rear view of the partition member 12. The cylindrical container 1 can be separated from the proximal end where the hopper 2 is provided, and has a discharge port 3 at the tip of the container.
A die 4 having a shape formed thereon is attached. The base end side of the container 1 is further connected to a bearing part 5. The rotor shaft 6 is supported in a cantilever manner by the bearing portion 5, and is inserted through the center line of the container 1 from the base end side of the container. This rotor shaft 6 is rotated at variable speed by a drive reduction mechanism (not shown). Further, a kneading section in which a plurality of disk members 8 are arranged is provided forward from the material W supply position D from the hopper 2 of the rotor shaft 6. on the other hand,
A push screw 9 separate from the rotor shaft is provided in the hopper 2 provided on the base end side of the container 1.
A pair of push-in screws 9 are inserted through the hopper 2, and their tips reach the vicinity of the rotor shaft 6 inside the container 1. The pair of screws 9 are cantilever-supported with bearings at their proximal ends, and are rotated at variable speeds by a drive reduction mechanism (not shown).

The disc member 8 has a protrusion 8 as shown in FIG.
The inner diameter of the boss part 81 fits into the rotor shaft and engages with a groove carved in the rotor shaft. A protrusion 82 is formed. Disc part 83
has surfaces 84 and 85 perpendicular to the axial direction that are smoothly continuous with the outer surface of the boss portion and a curvature surface, and an outer peripheral edge 86 that connects the surfaces 84 and 85, and a surface 8 perpendicular to the axial direction.
For example, four spiral blades 87 and 88 are formed on the blades 4 and 85, respectively. Of these spiral blades, the one shown by the solid line, that is, the one formed on the material inlet side, transfers the material from the inner circumference to the outer circumference by rotation in the direction of the arrow, and the one shown by the dotted line, that is, the material Formed on the discharge side 88
transfers the material from the outer circumference to the inner circumference by rotation in the direction of the arrow. Such a disc member 8 can be integrally formed by, for example, casting of wear-resistant steel.

The outer diameter of the rim portion 121 of the partition member 12 is the same as that of the container 1.
A protrusion 122 is formed which fits into the groove and engages with a groove cut into the inner wall surface of the container 1.

A partition portion 123 is formed in the center of the rim portion 121. This is a surface 124, 1 perpendicular to the axial direction that is smoothly continuous with the inner surface of the rim portion 121 and the curvature surface.
25 and an inner peripheral edge 1 that connects the surfaces 124 and 125.
26 and a number of spiral blades 127, 1 in the axially perpendicular planes 124, 125, respectively.
28 is formed. The angle formed by this spiral blade with the adjacent one, for example, an angle of 72° in the case of 5 threads, is designed so that it does not coincide with that of the disc member 8. Among these spiral blades, the one shown by a solid line, that is, the one 127 formed on the material input port side is disposed opposite to the spiral blade 88 formed on the discharge side of the disc member 8. The one shown by a solid line, that is, the one 127 formed on the material input port side, is disposed opposite to the spiral blade 88 formed on the material discharge port side of the disc member 8.

The spiral shape of the blades formed on the disk member 8 and the partition member 12 can be formed using an Archimedean spiral, a parabolic spiral, an involute curve, a curve approximated thereto, or a radial straight line. In addition, the vertical surfaces 124, 1 of the partition member 12
25 may remain a flat surface without forming any protrusions.

In the above configuration, the fed material is sandwiched between the rotating disc member 8 and the fixed partition member 12, and is subjected to compressive force due to the rotation of the spiral blade of the disc member. Then, while being subjected to a crushing action at the point where the ridges of the blades overlap, a portion of the material moves over the ridges to the next valley, and the remaining portion moves along the blades of the partition member.
In this way, on the material input side of the disc member, the material moves from the inner periphery to the outer periphery, and on the material discharge side of the disc member, the material moves from the outer periphery to the inner periphery, and is bent sequentially. It approaches the discharge port 3 while moving along the passage.

In the kneading operation, the material W is put into the hopper 2, and the material W is pushed into the container 1 with the push screw 9. On the other hand, the rotor shaft 6 is rotated, and the material extruded by the pressure of the pushing screw 9 and reaching the disc member 8 is kneaded one after another. The kneaded material is discharged from the discharge port 3. By changing the rotational speed of the screw 9 with respect to the rotational speed of the rotor shaft 6, the kneading pressure can be changed. For example, by increasing the rotational speed of the screw 9, the pressure to push the material into the kneading section can be increased, and by decreasing the rotational speed of the screw 9, the pressing pressure can be reduced. In addition to these, by changing the rotational speed of the rotor shaft 6, the discharge amount from the discharge port 3 can be changed. Simply by changing the rotational speed of the screw 9 and the rotational speed of the rotor shaft 6, the relationship between the amount or pressure pushed into the kneading section and the amount discharged from the discharge port 3 can be varied in various ways. On the other hand, the kneading effect in the kneading section is due to the rotor shaft 6 and screw 9.
Although it is not simple due to the relationship between the two rotational speeds, by considering the pressure inside the kneading section and the kneading speed, it is possible to obtain a kneading effect according to the desired properties after kneading by adjusting the two rotational speeds. be able to.

The present invention has the above-described configuration, and the rotor shaft that controls the rotation of the kneading section that kneads the materials and the push screw that feeds the material into the kneading section are separate bodies, and each can be rotated at a free rotational speed. This makes it possible to perform kneading that is appropriate to the desired properties of the material after kneading.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of the main part of the embodiment, Fig. 2 is a cross-sectional view of the main part, Fig. 3 is a view of the disc member viewed from the material supply side, and Fig. 4 is a view of the partition member from the material supply side. This is a diagram viewed from above. DESCRIPTION OF SYMBOLS 1... Container, 2... Hopper, 6... Rotor shaft, 8... Disc member, 9... Push screw.

Claims (1)

[Claims] 1. A material discharge port is provided at the tip of the cylindrical container, and a hopper for inputting material is provided at the proximal end, and the material is supplied into the container from the hopper, kneaded and sent forward, and then discharged from the discharge port. In the continuous kneading device for discharging, a rotor shaft having a kneading section in which a plurality of disc members are aligned in the axial direction on the outer periphery is arranged in front of the material supply position from the hopper. a push-in screw separate from the rotor shaft provided with the kneading portion is inserted into the hopper and placed in the container from the proximal end of the container so that the kneading portion is formed;
A continuous kneading device characterized in that the screw pushes the material put into the hopper into a container and extrudes it toward the kneading section.