JP3474712B2 - Closed kneader - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a closed type kneading machine for kneading a material to be kneaded such as rubber and plastic together with various additives, and particularly, to reduce the rotational speed of a prime mover so that two rotors are different from each other. One that rotates in the direction.

[0002]

2. Description of the Related Art Conventionally, as a closed type kneading machine, there is one shown in FIGS. 3 and 4, which will be described below. In FIG. 3 and FIG. 4, the closed type kneading machine X has a floating weight 31, a drop door 32, and a cylindrical closed kneading chamber 33 that is two circles whose cross sections communicate with each other. Two rotors 38 arranged side by side,
Have 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 reducer may be used) 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, 4
They are connected via 1. Further, there is also a type in which the output shaft from the two-stage speed reducer 42 is only 36, the connecting gear and pinion are attached to the kneading chamber 33, and the rotors 38 and 39 are attached to the end portions of the rotors 38 and 39 on the side of the two-stage speed reducer 42.

As shown in FIG. 4, the two-stage speed reducer 42 has a transmission shaft 50 and an input shaft 51 which are arranged in parallel to the output shaft 35, and a prime mover 46 input from the input shaft 51. The input shaft 51 so that the rotation speed (driving force) is gradually reduced.
The transmission shaft 50, the transmission shaft 50, and the output shaft 35 are connected by a plurality of helical gears 50 to 55.

The floating weight 31 forming a part of the upper side of the kneading chamber 33 is attached to a piston shaft 43 and is vertically movable in a hopper 44, and a drop forming a part of the lower side of the kneading chamber 33. The door 32 is openable and closable so that the object to be kneaded can be taken out. 45 is a hopper 44 with an additive to be kneaded
It is a charging port for charging a predetermined amount into the inside.

Next, the operation of the closed type kneading machine X having such a structure will be described. A kneaded material such as rubber or plastic is charged into the hopper 44 from the charging port 45 in a predetermined amount together with various additives, and the kneading chamber 3 in a hermetically sealed state by the pushing action of the floating weight 31.
Press into 3 Then, the driving force (rotation) of the prime mover 46 is transmitted to the two-stage speed reducer 42 in a state where the kneading chamber 33 is sealed, and the rotor 3 is transmitted via the connecting gears 40 and 41.
Rotate 8, 39 in different directions.

The rotors 38 and 39 are connected to the kneading chamber 3
The inner wall of 3 is rotated so as to sweep, and the material to be kneaded, which is press-fitted into the kneading chamber 33, is kneaded together with various additives. After the kneading is completed, the drop door 32 is rotated to open and drop, and the material to be kneaded is discharged from the discharge port. After discharging the material to be kneaded, the drop door 32 is prepared for the next kneading.
Is rotated upward to close the discharge port of the kneading chamber 33. Then, again, the floating weight 31 is fed from the charging port 45.
Thus, the material to be kneaded is pushed into the kneading chamber 33, and kneading is started by the rotors 38 and 39 rotated in different directions. Such a kneading cycle is repeated in the closed kneading machine X having the above structure.

[0007]

However, in the conventional hermetic kneading machine X, the rotational speed (driving force) input from the prime mover 46 is appropriately decelerated to rotate the rotors 38 and 39 in different directions. Therefore, the input shaft 51, the transmission shaft 50, and the output shafts 35 and 36 are arranged side by side, and each helical gear 52
~ 55, each connecting gear 40, 41 with each shaft 35,
A speed reducer 42 that connects 36, 50 and 51 to each other is used. Therefore, in order to arrange the closed kneading machine X, a large space is required in the lateral direction (direction in which the shafts 35, 36, 50, 51 are arranged in parallel), and
The entire closed-type kneading machine tends to increase in size. Particularly, the number of reduction stages of the helical gear reducer 42 increases (3 stages,
When the number of stages is 4), the above-mentioned lateral space for arranging the closed kneading machine X is remarkably increased. In addition, since the inter-core distance between the rotors 38 and 39 of the closed kneading machine X is specified, two stages (multistage) connected to the rotors 38 and 39 are provided.
The center distance between the output shafts 35 and 36 of the speed reducer 42 is also defined, so that the standard speed reducer cannot be used and the hermetic kneader X is expensive.

In order to solve the above-mentioned problems, connecting gears that allow the rotors to rotate in different directions, a planetary speed reducer, which is a standard product, and a prime mover are sequentially arranged in series with the planetary speed reducer. It is also conceivable to connect each other with a coupling or the like to reduce the space in the lateral direction and to reduce the cost of the hermetic kneader by using a planetary speed reducer as a standard product. 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 becomes large, and each rotor, each connecting gear, and the planetary speed reducer are connected. Therefore, it is impossible to reduce the size and cost of the entire hermetic kneader.

The present invention has been made in order to solve this problem, and it is an object of the present invention to reduce the installation space of the entire hermetic kneader and to reduce the cost of the hermetic kneader as a whole.

[0010]

In order to solve the above-mentioned problems, in the present invention, in Claim 1, the cross-sections are communicated with each other.
Two rotors arranged side by side with a core distance are provided in a cylindrical closed kneading chamber which is one circle, and the rotors are hermetically sealed.
A closed kneading machine that rotates so as to sweep the inner wall of the kneading chamber
In, a pair of connecting gears that mesh with each other to rotate the rotors in different directions, and a planetary reducer that reduces the number of rotations of a prime mover , one of the connecting gears and the planetary reducer, They are arranged in series in one axial direction of the rotor and are integrated, and the output shaft of the planetary speed reducer is coupled to the one rotor.
With directly coupled via the respective connecting gear, said output shaft of said planetary reduction gear, the other pre-km over data
Write to those via a coupling is provided on a transmission output shaft connected. Thus, the connecting gears and the planetary reduction gears are arranged in series in the axial direction of the rotor and integrated, so that the space in the series 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 the transmission output shaft located inside the gear box, and each rotor is rotated in different directions with the minimum number of members. By doing so, the space in the serial direction can be reduced. Furthermore, since the planetary speed reducer, which is a standard product, is used, it is possible to reduce the cost while reducing the space in the series direction.

According to a second aspect of the present invention, the planetary speed reducer according to the first aspect has a one-step or multi-step speed reducing function and is attached to a gear box for accommodating the connecting gear and at least The respective gears constituting the one-step deceleration function are arranged in the gear box.
As a result, not only the output shaft that constitutes the planetary speed reducer,
Since the gears forming the one-step speed reducing function are arranged in the gear box and the planetary speed reducer is attached to the gear box, the space in the series direction can be further reduced.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION A closed type kneader of the present invention will be described below 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 configurations, and thus the description thereof will be omitted.

1 and 2, the hermetic kneading machine X of the present invention comprises a gear box 22 for accommodating the connecting gears 20, 21 in series in the axial direction of the rotors 38, 39 arranged in parallel, The planetary speed reducer 1 of the two-stage speed reduction type, which is a standard product, is arranged and integrated.

First, the 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 that outputs the rotational speed reduced by the planetary speed reducer 4.

The input shaft 3 is rotatably supported via a bearing provided in the speed reducer body 7, and is connected to the drive motor 2 via a coupling 8 on the side protruding from the speed reducer body 7. ing. The output shaft 5 is arranged in the gear box 22 coaxially with the input shaft 3, and is rotatably supported on both ends by two bearings provided in the gear box 22. The output shaft 5 is connected to the input shaft 3 via the planetary speed reducer 4.

The planetary deceleration unit 4 has a two-stage deceleration function, and has 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 speed reducer body 7.

A transmission shaft 13 is arranged between the input shaft 3 and the output shaft 5 coaxially with the input shaft 3.
A coupling bush 14 having a flange portion extending in the radial direction is provided on the input shaft 3 side of the transmission shaft 13. Then, each of the first planetary gears 11 has a connecting bush 14
Is rotatably supported by a plurality of rotary shafts provided on the flange portion at a predetermined angle in the circumferential direction.

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 fixedly provided on the inner peripheral surface of the gear box 22. Further, each second planetary gear 16 is arranged in a connecting bush 18 provided on the transmission shaft 13 side of the output shaft 5. The connecting bush 18 has a flange portion extending in the radial direction of the speed reducing output shaft 5, and each second planetary gear 16 rotates on a rotation shaft provided at a predetermined angle in the circumferential direction of the flange portion. Freely supported. In addition, the planetary reduction unit 4 described above
Has been explained for those with a two-stage deceleration function,
The present invention is not limited to this, and it may have one, three, and four deceleration functions. As a result, it is possible to adjust so that an appropriate number of rotations for each rotor 38, 39 of the closed kneading machine X can be output.

Then, each connecting gear 20, 21
The gear box 22 accommodating (including the output shaft 5 of the planetary speed reducer 1) and the planetary speed reducer 1 have the speed reducer body 7 of the planetary speed reducer 1 attached to the gear box 22 via the first internal gear 17. It is integrated in that. As a result, the second sun gear 15, the second planetary gear 16, and the second internal gear 17, which form a one-step reduction function, are arranged in the gear box 22 without looking at the output shaft 5 of the planetary speed reducer 1. As a result, a structure that reduces the space in the series direction can be obtained.

Next, the connecting gears 20 and 21 of the gear box 22 penetrate the gear box and the rotor 3
Output shaft 5 directly connected to 8 via coupling 37
And a transmission output shaft 6 connected to the rotor 39 via a coupling 37. The output of the output shaft 5 (rotation ) 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
It is designed to rotate in mutually different directions via 0 and 21. As the connecting gears 20 and 21, spur gears, helical gears, helical gears, or the like are used.

The object to be kneaded is kneaded by the closed type kneading machine X constructed as described above, because the object to be kneaded together with the additive is put in the kneading chamber 33 in a closed state by the pushing action of the floating weight as described above. Press fit. Then, with the kneading chamber 33 sealed, the rotation of the prime mover 2 is changed to the planetary speed reducer 1
And the output shaft 5 and the transmission output shaft 6 are rotated in different directions via the connecting gears 20 and 21 at the rotational speed reduced by the planetary speed reducer 1. As a result, the rotors 38 and 39 rotate in different directions via the couplings 37.

The rotors 38 and 39 are connected to the kneading chamber 3
The inner wall of 3 is rotated so as to sweep, and the material to be kneaded, which is press-fitted into the kneading chamber 33, is kneaded together with various additives. After the kneading is completed, the drop door is opened by rotating it so that the material to be kneaded is discharged from the discharge port. After discharging the material to be kneaded, the drop door is rotated upward to close the discharge port of the kneading chamber 33 in preparation for the next kneading. Next, the material to be kneaded, which is fed from the feeding port 45 by the floating weight, is pushed again into the kneading chamber 33, and the kneading by the rotors 38 and 39 rotated in different directions is started. Such a kneading cycle is repeated in the closed kneading machine X having the above structure.

As described above, in the hermetic kneading machine X of the present invention, the gear box 22 accommodating the connecting gears 20 and 21 and the planetary speed reducer 1 are arranged in series in the axial direction of the rotors 38 and 39 to be integrated. To reduce the space in the series direction, and to arrange not only the output shaft 5 constituting the planetary speed reducer 1 but also the respective gears 15 to 16 such as the second sun gear in the gear box 22. The space in the serial direction is reduced, and further, the output shaft 5 of the planetary speed reducer 1 is directly connected to the rotor 38, and the connecting gears 20, 21 are connected.
By forming the output shaft 5 and the transmission output shaft 6 located in the gear box 22 and rotating the rotors 38 and 39 in different directions with a minimum number of members, the space in the series direction is reduced. Is. As a result, even if the connecting gears 20 and 21 and the planetary speed reducer 1 are arranged in series in the axial direction of the rotors 38 and 39, the space required for arranging the closed kneader X is reduced as compared with the prior art. It is possible to provide a closed kneading machine X that is downsized. Further, by using the planetary speed reducer 1 which is a standard product, it is possible to reduce the arrangement space of the above-mentioned closed type kneading machine X and realize downsizing, and also to reduce the cost of the whole closed type kneading machine X. It will be possible.

[0024]

As described above, according to the hermetic kneading machine of the present invention, in claim 1, the connecting gears and the planetary speed reducer are arranged in series in the axial direction of the rotor and integrated. The 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 the transmission output shaft located inside the gear box, and each rotor is rotated in different directions 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 speed reducer are arranged in series in the axial direction of the rotor,
It is possible to reduce the size of the entire hermetic kneader while reducing the space for disposing the hermetic kneader as compared with the conventional technique. Further, by using the planetary speed reduction mechanism, which is a standard product, it is possible to reduce the arrangement space of the closed type kneading machine and realize the downsizing, and also to reduce the cost of the whole closed type kneading machine.

According to a second aspect of the present invention, in addition to the output shaft constituting the planetary speed reducer according to the first aspect, not only the output shaft constituting the planetary speed reducer but also the respective gears constituting the one-stage speed reducing function are arranged in the gear box, and the planetary speed reducer is provided. Since it is attached to the gear box, the space in the serial direction can be further reduced, and the miniaturization of the hermetic kneader can be achieved.

[Brief description of drawings]

FIG. 1 is a schematic view showing a closed kneader of the present invention.

FIG. 2 is a cross-sectional view showing a planetary speed reducer used in the hermetic kneader of the present invention.

FIG. 3 is a cross-sectional view of a conventional closed kneader.

FIG. 4 is a schematic view taken along the arrow A in FIG.

[Explanation of symbols]

1 Planetary reducer 5 output shafts 6 Transmission output shaft 15 Second sun gear 16 Second planetary gear 17 Second internal gear 33 kneading room 38, 39 rotor 20,21 connecting gear 22 gearbox

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshinori Kurokawa 2-3-1, Niihama, Arai-cho, Takasago, Hyogo Prefecture Kobe Steel Works Takasago Works (56) References JP 61-66613 (JP, A) JP 10-71613 (JP, A) JP 9-248850 (JP, A) JP 7-16834 (JP, A) JP 6-320601 (JP, A) JP 6-155547 (JP, A) JP 5-261792 (JP, A) JP 5-64808 (JP, A) JP 4-102751 (JP, A) JP 4-102750 (JP, A) Kaihei 4-102749 (JP, A) JP-A-3-181640 (JP, A) Actual Kaihei 4-89319 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B29B 7 / 00-7/94 B01F 7/00-7/32 F16H 1/00-63/48

Claims (2)

(57) [Claims] 1. Two rotors arranged side by side with a center-to-center distance in a cylindrical closed kneading chamber, which is two circles whose cross sections communicate with each other.
And the rotor has a closed inner wall of the kneading chamber.
In a closed-type kneading machine that rotates so as to sweep, a pair of connecting gears that mesh with each other to rotate the rotors in different directions, and a planetary reducer that reduces the rotation speed of a prime mover , one of the connecting gears . And the planetary reducer
The rotors are arranged in series in one axial direction of the rotor and integrated, and the output shaft of the planetary speed reducer is connected to the one rotor by a cup.
With directly linked via a ring, wherein each connecting gear, said output <br/> force axis of the planetary reduction gear, a transmission output shaft before being connected via the other to the coupling of kilometers over data A closed-type kneader characterized in that it is provided in. 2. The planetary speed reducer has a one-step or multi-step speed reducing function, is attached to a gear box that houses the connecting gear, and has at least one speed reducing step. The hermetic kneading machine according to claim 1, wherein the kneading machine is arranged in the gear box.