JPH1044145A - Closed kneader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a disposition space of an entire closed kneader and contrive a cost down of the overall kneader. SOLUTION: A decelerating output shaft 5 of a planetary reduction gear 1 is coupled directly to one rotor 38 via a coupling 37. A pair of connecting gears 20, 21 for connecting the shaft 5 of the gear 1 to an input shaft 6 for a rotor coupled other rotor 39 are disposed in a reduction gear body 7 of the gear 1, and respectively provided at the shafts 5 and 6. Thus, a disposition space of an entire closed kneader X is reduced, and the kneader X is made compact.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetic kneader for kneading materials to be kneaded, such as rubber and plastic, with various additives. It is related to what rotates in a direction.

[0002]

2. Description of the Related Art Conventionally, as a closed kneader, there is one shown in FIGS. 3 and 4, which will be described below. In FIGS. 3 and 4, the closed-type kneader X includes a cylindrical closed kneading chamber 33 having two circles whose cross sections communicate with a floating weight 31 and a drop door 32. Two rotors 38 arranged side by side in a state,
39. The rotors 38 and 39 are connected to the output shafts 35 and 36 of a helical gear type two-stage speed reducer 42 (three-stage or four-stage speed reducers) via a coupling 37. At the same time, one output shaft 35 is connected to the other output shaft 36 by a pair of connecting gears 40 and 4.
1. There is also a type in which the output shaft from the two-stage speed reducer 42 is only 36, a connecting gear and a pinion are attached to the kneading chamber 33, and the rotors 38 and 39 are attached to the end of the two-stage speed reducer 42 side.

[0003] As shown in FIG. 4, this two-stage speed reducer 42 has a transmission shaft 50 and an input shaft 51 arranged in parallel with an output shaft 35, and a motor 46 input from the input shaft 51. The input shaft 51 is set so that the rotational speed (driving force) is gradually reduced.
And the transmission shaft 50 and the output shaft 35 connected to the transmission shaft 50 by a plurality of helical gears 50 to 55.

[0004] A floating weight 31 forming an upper part of the kneading chamber 33 is mounted on a piston shaft 43 so as to be movable up and down in a hopper 44, and a drop forming a lower part of the kneading chamber 33. The door 32 is freely openable and closable so that the material to be kneaded can be taken out. Reference numeral 45 denotes a hopper with the additive to be kneaded together with additives.
This is an inlet for feeding a predetermined amount into the inside.

Next, the operation of the closed kneader X having such a configuration will be described. Materials to be kneaded, such as rubber and plastic, are put into the hopper 44 from the inlet 45 together with various additives by a predetermined amount, and the materials to be kneaded are pushed into the kneading chamber 3 in a closed state by the pushing action of the floating weight 31.
Press into 3. Then, with the kneading chamber 33 sealed, the driving force (rotation) of the prime mover 46 is transmitted to the two-stage speed reducer 42, and the rotor 3 is connected via the connecting gears 40 and 41.
8, 39 are rotated in different directions.

[0006] Each of the rotors 38 and 39 is connected to the kneading chamber 3.
3 is rotated so as to sweep the inner wall, and the material to be kneaded pressed into the kneading chamber 33 is kneaded with various additives. After completion of the kneading, the drop door 32 is opened by rotating and dropping, and the material to be kneaded is discharged from the discharge port. After the material to be kneaded is discharged, the drop door 32 is prepared for the next kneading.
Is rotated upward to close the outlet of the kneading chamber 33. Next, the floating weight 31 is again supplied from the inlet 45.
As a result, the material to be kneaded is pushed into the kneading chamber 33, and kneading by the rotors 38 and 39 rotated in different directions starts. Such a kneading cycle is repeated by the closed kneader X having the above structure.

[0007]

However, in the conventional closed-type kneader X, the number of revolutions (driving force) input from the prime mover 46 is appropriately reduced to rotate the rotors 38 and 39 in different directions. For this purpose, the input shaft 51, the transmission shaft 50, and the output shafts 35 and 36 are provided side by side, and each helical gear 52
55, each connecting gear 40, 41, each shaft 35,
A speed reducer 42 for interconnecting 36, 50, 51 is employed. Therefore, in order to arrange the closed kneader X, a large space is required in the lateral direction (the direction in which the shafts 35, 36, 50, and 51 are juxtaposed), and
The overall size of the closed kneader also tends to increase. In particular, the number of reduction stages of the helical gear type reduction gear 42 is increased (three stages,
With four stages), the increase in the space in the lateral direction for disposing the closed kneader X becomes remarkable. In addition, since the center distance between the rotors 38 and 39 of the closed kneader X is defined, two stages (multistage) connected to the rotors 38 and 39 are provided.
The distance between the cores of the output shafts 35 and 36 of the speed reducer 42 is also specified, so that a standard speed reducer cannot be used, and the hermetic kneader X is expensive.

In order to solve the above-mentioned problem, a connecting gear which enables each rotor to rotate in different directions, a planetary reducer which is a standard product, and a prime mover are sequentially arranged in series with the planetary reducer. It is also conceivable to reduce the lateral space and to reduce the cost of the internal mixer by using a standard planetary reducer by connecting them with a coupling or the like. However, even if each device for transmitting an appropriate rotation speed to each rotor is simply arranged in series, the space in the series direction increases, and each rotor, each connecting gear, and the planetary reducer are connected. Therefore, it is not possible to reduce the size and cost of the entire internal mixer.

The present invention has been made to solve this problem, and it is an object of the present invention to reduce the arrangement space of the whole internal mixer and to reduce the cost of the entire internal mixer.

[0010]

In order to solve the above-mentioned problems, according to the present invention, in the present invention, the cross-sections of the two sections communicate with each other.
Two rotors arranged side by side in a cylindrical closed kneading chamber as two circles, a pair of connecting gears for rotating the rotors in different directions, and a planetary reducer for reducing the rotation speed of the prime mover, The connecting gear and the planetary reducer are arranged in series in the axial direction of the rotor and are integrated, and the output shaft of the planetary reducer is directly connected to the one rotor, Each of the connecting gears is provided on an output shaft of the planetary reduction gear and a transmission output shaft connected to the other rotor. Thereby, since each connecting gear and the planetary reduction gear are arranged in series in the axial direction of the rotor and integrated, the space in the above-mentioned serial direction can be reduced. In addition, the output shaft of the planetary reducer is directly connected to the rotor, and each connecting gear is formed on the output shaft and transmission output shaft located in the gear box, and each rotor is rotated in a different direction with the minimum number of members. By doing so, the space in the serial direction can be reduced. Further, since the standard planetary reducer is used, it is possible to reduce the cost while reducing the space in the serial direction.

According to a second aspect of the present invention, in the first aspect, the planetary speed reducer has a one-stage or multi-stage speed reduction function, and is attached to a gear box that houses the connecting gear. Each gear constituting a one-stage reduction function is arranged in the gear box.
As a result, not only the output shaft constituting the planetary reducer,
Since the respective gears constituting the one-stage speed reduction function are arranged in the gear box and the planetary speed reducer is mounted on the gear box, the space in the serial direction can be further reduced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an internal mixer according to the present invention will be described with reference to the drawings. In FIGS. 1 and 2, the same reference numerals as those in FIGS. 3 and 4 of the prior art have the same configuration, and a description thereof will be omitted.

1 and 2, a closed kneader X of the present invention includes a gear box 22 for accommodating connecting gears 20, 21 in series in the axial direction of rotors 38, 39 arranged side by side. The planetary reduction gear 1 of a two-stage reduction type, which is a standard product, is arranged and integrated.

First, a planetary speed reducer 1 includes an input shaft 3 connected to a drive motor 2 serving as a prime mover, and a planetary speed reducer 4 for reducing the rotational speed of the drive motor 2 input to the input shaft 3.
And an output shaft 5 for outputting the rotation speed reduced by the planetary reduction unit 4.

The input shaft 3 is rotatably supported via a bearing provided on the reduction gear main body 7, and is connected to the drive motor 2 via a coupling 8 on a side protruding from the reduction gear main body 7. ing. The output shaft 5 is disposed in the gear box 22 so as to be coaxial with the input shaft 3. Both ends of the output shaft 5 are rotatably supported by two bearings provided on the gear box 22. The output shaft 5 is connected to the input shaft 3 via the planetary reduction unit 4.

The planetary reduction unit 4 has a two-stage reduction function, and includes a plurality of first planetary gears 11 meshing with the outer periphery of a first sun gear 10 formed at the end of the input shaft 3 on the output shaft 5 side. Each of the first planetary gears 11 meshes with a first internal gear 12 fixed to the inner peripheral surface of the reduction gear main body 7.

A transmission shaft 13 is disposed between the input shaft 3 and the output shaft 5 on the same axis as the input shaft 3.
On the input shaft 3 side of the transmission shaft 13, a connection bush 14 having a flange portion extending in the radial direction is provided. Each first planetary gear 11 is connected to a connecting bush 14.
Are rotatably supported by a plurality of rotating shafts provided at a predetermined angle in the circumferential direction on the flange portion.

A second sun gear 15 is formed on the output shaft 5 side of the transmission shaft 13, and a plurality of second planetary gears 16 are arranged so as to mesh with the outer periphery of the second sun gear 15. Each second planetary gear 16 meshes with a second internal gear 17 fixed on the inner peripheral surface of the gear box 22. Each second planetary gear 16 is arranged on a connection bush 18 provided on the transmission shaft 13 side of the output shaft 5. The connection bush 18 has a flange portion extending in the radial direction of the output shaft 5 for reduction, and each second planetary gear 16 rotates on a rotation shaft provided at a predetermined angle in the circumferential direction of the flange portion. It is freely supported. In addition, the above-mentioned planetary reduction unit 4
Has been described as having a two-stage deceleration function,
The present invention is not limited to this, and may have a one-, three-, and four-stage deceleration function. Thereby, it is possible to adjust so that an appropriate number of rotations for each of the rotors 38 and 39 of the internal mixer X can be output.

The connecting gears 20, 21
The gearbox 22 containing the output shaft 5 of the planetary reduction gear 1 and the planetary reduction gear 1 are attached to the gearbox 22 via the first internal gear 17 with the reduction gear body 7 of the planetary reduction gear 1. It is integrated by the thing. Thus, the second sun gear 15, the second planetary gear 16, and the second internal gear 17, which constitute a one-stage speed reduction function, are arranged in the gear box 22, not in the output shaft 5 of the planetary reduction gear 1. Thus, a structure that reduces the space in the serial direction can be obtained.

Next, the connecting gears 20 and 21 of the gear box 22 pass through the gear box and the rotor 3
Output shaft 5 directly connected to the output shaft 8 via a coupling 37
And a transmission output shaft 6 connected to the rotor 39 via a coupling 37. The output (rotation) of the output shaft 5 is established by connecting these shafts 5 and 6 in mesh with each other. ) Is transmitted to the transmission output shaft 6. The transmission output shaft 6 is rotatably supported by two bearings provided on the gear box 22. This allows
The output shaft 5 and the transmission output shaft 6 are connected to each connecting gear 2.
Via 0,21, they rotate in mutually different directions. As the connecting gears 20, 21, spur gears, helical gears, helical gears, and the like are used.

The kneading of the material to be kneaded by the closed kneading machine X constructed as described above is performed by pushing the floating weight into the closed kneading chamber 33 together with the additives by the pushing action of the floating weight as described above. Press in. Then, while the kneading chamber 33 is sealed, the rotation of the prime mover 2 is changed to the planetary reduction gear 1.
The output shaft 5 and the transmission output shaft 6 are rotated in different directions via the connecting gears 20 and 21 at the rotation speed reduced by the planetary reduction gear 1. As a result, the respective rotors 38 and 39 rotate in different directions via the respective couplings 37.

The rotors 38 and 39 are connected to the kneading chamber 3.
3 is rotated so as to sweep the inner wall, and the material to be kneaded pressed into the kneading chamber 33 is kneaded with various additives. After completion of the kneading, the drop door is opened by rotating and dropping, and the material to be kneaded is discharged from the discharge port. After the material to be kneaded is discharged, the drop door is rotated upward in preparation for the next kneading, and the discharge port of the kneading chamber 33 is closed. Next, the material to be kneaded introduced from the charging port 45 by the floating weight is pushed into the kneading chamber 33 again, and kneading by the rotors 38 and 39 rotated in different directions starts. Such a kneading cycle is repeated by the closed kneader X having the above structure.

As described above, in the closed kneader X of the present invention, the gear box 22 accommodating the respective connecting gears 20 and 21 and the planetary reduction gear 1 are arranged in series in the axial direction of the rotors 38 and 39 and are integrated. The space in the serial direction is reduced, and the gears 15 to 16 such as the second sun gear as well as the output shaft 5 that constitutes the planetary reduction gear 1 are arranged in the gear box 22. The space in the series direction is reduced, and the output shaft 5 of the planetary reduction gear 1 is directly connected to the rotor 38 so that the connecting gears 20 and 21 are connected.
Are formed on the output shaft 5 and the transmission output shaft 6 located in the gear box 22, and the rotors 38 and 39 are rotated in different directions with a minimum number of members, thereby reducing the space in the serial direction. It is. Thereby, even if the connecting gears 20 and 21 and the planetary reduction gear 1 are arranged in series in the axial direction of the rotors 38 and 39, the arrangement space of the hermetic kneader X is reduced as compared with the related art. It is possible to provide a closed-type kneader X that is reduced in size. Also, by using the planetary reduction mechanism 1 which is a standard product, it is possible to reduce the arrangement space of the above-described closed-type kneader X and achieve downsizing while reducing the cost of the entire closed-type kneader X. It becomes possible.

[0024]

As described above, according to the closed kneader of the present invention, in the first aspect, each connecting gear and the planetary reduction gear are arranged in series in the axial direction of the rotor and integrated. Space in the serial direction can be reduced. In addition, the output shaft of the planetary reducer is directly connected to the rotor, and each connecting gear is formed on the output shaft and transmission output shaft located in the gear box, and each rotor is rotated in a different direction with the minimum number of members. By doing so, the space in the serial direction can be reduced. As a result, even if each connecting gear and the planetary reducer are arranged in series in the axial direction of the rotor,
Compared with the prior art, it is possible to reduce the size of the whole closed kneader while reducing the arrangement space of the closed kneader. Further, by using a standard planetary speed reduction mechanism, it is possible to reduce the space required for disposing the internal mixer and reduce the size of the internal mixer, and also to reduce the cost of the entire internal mixer.

According to a second aspect of the present invention, in addition to the first aspect, not only the output shaft constituting the planetary reducer but also each gear constituting the one-stage reduction function is arranged in the gear box, Is mounted on the gearbox, so that the space in the serial direction can be further reduced, and the size of the internal mixer can be further reduced.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an internal mixer of the present invention.

FIG. 2 is a sectional view showing a planetary speed reducer used in the internal mixer of the present invention.

FIG. 3 is a cross-sectional view of a conventional internal mixer.

FIG. 4 is a schematic view taken in the direction of arrow A in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Planetary reduction gear 5 Output shaft 6 Transmission output shaft 15 2nd sun gear 16 2nd planetary gear 17 2nd internal gear 33 Kneading chamber 38, 39 Rotor 20, 21 Connecting gear 22 Gear box

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yoshinori Kurokawa 2-3-1, Shinhama, Arai-cho, Takasago-shi, Hyogo Inside Kobe Steel, Ltd. Takasago Works

Claims (2)

[Claims] 1. Two rotors juxtaposed in a cylindrical closed kneading chamber having two circles having a cross section communicating with each other, a pair of connecting gears for rotating the rotors in different directions, and a rotation speed of a prime mover. A planetary speed reducer for reducing the speed, the connecting gear and the planetary speed reducer are arranged in series in the axial direction of the rotor, are integrated, and an output shaft of the planetary speed reducer, A closed kneader directly connected to the one rotor, wherein each of the connecting gears is provided on an output shaft of the planetary reduction gear and a transmission output shaft connected to the other rotor. . 2. The planetary speed reducer has a one-stage or multi-stage speed reduction function, is mounted on a gear box that houses the connecting gear, and includes at least one stage of gears constituting a speed reduction function. The internal mixer according to claim 1, wherein the internal mixer is arranged in the gear box.