JPH07329144A - Feeder apparatus for rubber - Google Patents

Abstract

PURPOSE:To provide a small-sized and inexpensive feeder apparatus capable of forming a simple bearing structure. CONSTITUTION:A main body container part 30 having a charge port opened on the upper surface side thereof, two rotary shafts arranged parallelly in the main body container part 30 and attached to the main body container part 30 at both end parts thereof by bearings so as to be rotated in reverse directions in opposed relationship, two screw blades 33C, 33D, 34C, 34D arranged and fixed on the peripheral surfaces of the rotary shafts 33, 34 so as to be turned toward the central parts of the rotary shafts from both ends thereof in mutually reverse directions and sending a rubber material toward the central part of the main body container part 30 by the rotation of the rotary shafts and the drive device rotating the rotary shafts 33, 34 are provided. Further, the opening part provided to the central lower part of the main body container part 30, the introducing chamber communicating with the opening part to be provided to the main body container part 30 and the emitting orifice provided to the introducing chamber and extruding the rubber material in a strip or rod like state are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber feeder device.

[0002]

2. Description of the Related Art A rubber material is prepared by introducing a raw material rubber and various compounding chemicals into a kneader such as a kneader and mixing them. These rubber materials are put into an extruder,
Alternatively, since it is charged in the molding die, it is easy to handle, that is, it is made into a strip shape or a rod shape to be put into the extruder by a feeder device, or is first made into a strip shape or a rod shape to be charged into the molding die, and then pelletized. I cut it.

FIG. 4 is a plan view of the conventional feeder device 10 described above. The rubber material prepared by a kneader such as a kneader is prepared to have a considerable hardness. In order to form the rubber material into a strip shape or a rod shape by the feeder device 10, it is necessary to further knead in the feeder device 10 to reduce the hardness. In the conventional feeder device 10, two conical screws 12 and 1
As shown in FIG. 2, the blades 2 are arranged so as to face each other so that the screw blades are intertwined with each other. The rubber material is introduced from the introduction port 14, is kneaded by the screws 12 and 12 and is sent to the right side of the drawing, and is extruded from the die 16 in a strip shape or a rod shape. The screws 12, 12 are supported on the left end side of the main body container portion 18. The two screws 12 and 12 are meshed with each other by gears 20 and 20 and are driven by a common drive motor, and are rotated opposite to each other. As described above, the conventional feeder device 10 uses the conical screws 12 and 12,
An extremely strong kneading action occurs, and the rubber material can be efficiently adjusted to a predetermined hardness.

[0004]

As described above, the conventional feeder device 10 is advantageous in that a strong kneading action occurs. However, as shown, both screws 12,
Since 12 is a conical shape, intersect the axes,
Moreover, since the rubber material is sent to the outside of the tips of the screws 12 and 12, the main body container portion 18 is inevitably inevitable.
Since the structure is cantilevered, the bearing structure becomes extremely complicated as is clear from the figure. Further, since a strong kneading action occurs, a solid and large bearing structure is required to withstand this. Therefore, there is a problem that the conventional device becomes extremely expensive.

Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to provide a feeder device which can be formed in a simple bearing structure and can be provided at a small size and at a low cost. is there.

[0006]

The present invention has the following constitution in order to achieve the above object. That is, in a rubber feeder device in which a kneaded rubber material is charged and the charged rubber material is extruded in a strip shape or a rod shape, a main body container portion having an input port opened on the upper surface side and a main body container portion 2 Rotating shafts which are disposed in the main body so as to face each other in opposite directions, and which are rotatably supported by the main body container portion at both end portions, and on the peripheral surface of each rotating shaft, from both end portions of the rotating shafts toward the central portion. Two screw blades arranged and fixed, which are opposite to each other and which feed the rubber material toward the central portion of the main body container portion by rotating the rotating shaft,
A drive device for rotating the rotary shaft, an opening opened in a central lower portion of the main body container portion, an introduction chamber communicating with the opening portion and provided in the main body container portion, and an introduction chamber provided in the introduction chamber. And a discharge port for pushing the rubber material into a strip shape or a rod shape. It is preferable that a pressing member is provided on the main body container portion at a central portion of the upper surface opening of the main body container portion and above the portion where the rubber material is fed by the screw blades. Also the above 2
It is preferable that the opposing screw blades fixed to the rotary shaft of the book are provided so as to interlock with each other.

[0007]

In the present invention, the rotary shaft 33 to which the screw blades 33C and 33D are fixed, and the screw blades 34C and 34D.
The rotary shaft 34 to which D is fixed is arranged in parallel, and the screw blade 33C and the screw blade 33D and the screw blade 34C and the screw blade 34D are formed in opposite screw blades to form a rubber material as a main body. Container part 3
Since it is configured so as to be fed to the central portion of 0 and pushed outward from the portion, the rotary shafts 33, 34 can be supported by the main body container portion 30 at both ends thereof, and therefore the bearings 33A, 3
3B and the bearings 34A, 34B can be made to have a simple structure that is not so rigid and large-scale, and can be downsized and the cost can be significantly reduced. Since the screw blades are parallel to each other, the shearing force is somewhat low, but it can be suitably used for materials having relatively low hardness such as butyl rubber and silicone rubber. Furthermore, when it is exclusively used for these materials, the load of the drive device is also remarkably reduced, so a small drive device with relatively small output can be used, and in this respect as well, it is possible to reduce the size and cost. It will be possible.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. 1 is a plan view, FIG. 2 is a front sectional view, and FIG. 3 is a side sectional view. Reference numeral 30 denotes a main body container part, the upper surface of which is open and two charging ports 31, 31 are formed (FIG. 2). Reference numeral 32 is a hopper that surrounds the input ports 31 and 31 and is attached to the main body container section 30. Inside the body container portion 30, two rotating shafts 33, 34 are provided in parallel with each other, and bearings 33A provided on both end sides of the body container portion 30,
33B and bearings 34A and 34B are rotatably supported by bearings. Synchronous gears 35 and 36 are fixed to both ends of both rotary shafts 33 and 34, respectively, and both synchronous gears 35 and 36 are meshed with each other. A drive pulley 37 is fixed to the other end of the rotary shaft 34, and is rotated by a drive motor (drive device) not shown via a belt 38. Therefore, both rotary shafts 33 and 35 are rotated opposite to each other.

33C and 33D are screw blades,
It is fixed on the peripheral surface of the rotating shaft 33. Both screw blades 33C and 33D are formed in mutually opposite blades, and are fixed on both sides of the central portion of the rotary shaft 33. 34
C and 34D are also screw blades and are fixed on the peripheral surface of the rotating shaft 34. Both screw blades 34C, 34D
Are formed in mutually opposite blades, and are fixed on both sides of the central portion of the rotary shaft 34. Screw blade 33
C, 33D, and screw blades 34C, 34D rotate integrally with the rotary shaft 33, rotary shaft 34, respectively. The orientation of each screw blade is such that the rotary shaft rotates so that the rubber material is in the central portion of the main body container portion 30. It is formed so as to feed in the direction. Also, screw blades 33C and 34C,
If the screw blades 33D and 34D are arranged so as to be spatially intricate with each other, as shown in FIG. 1, the shearing action between the two is increased, and the kneading effect is further increased.
In addition, the inner bottom surface of the main body container portion 30 has the screw blades 3
3C and 33D and screw blades 34C and 34D are formed (FIG. 3).

Reference numeral 40 denotes a pressing member, which is the central portion of the upper surface opening of the main body container portion 30, and includes the screw blades 33C,
33D, the screw blades 34C, 34D are located above the portion into which the rubber material is fed, and the main body container portion 30
It is fixed to. As shown in FIG. 2, the lower surface of the pressing member 40 is formed into a tapered surface that is low on the center side and is high on both end sides in the extending direction of the rotating shafts 33 and 34. Screw blades 33C, 33D, screw blades 34C,
The rubber material sent to the center side by 34D is sent to the center side by the rotation of the screw blades, and is pushed toward the bottom of the main body container section 30, but at the same time, it rises upward in the center section. The rubber material that rises upward is gradually pressed downward by the tapered surface of the pressing member 40 and flows toward the bottom side of the main body container section 30. The pressing member 40 does not necessarily have to be provided.

An opening 42 is formed in the central bottom of the main body container 30.
Are formed. An introduction cylinder (introduction chamber) 44 is fixed to the bottom surface side of the main body container portion 30 so as to surround (communicate) the opening portion 42. A nozzle 45 has a slit-shaped or circular discharge port 46 formed by the extruded shape of the rubber material and covers the bottom side of the introduction cylinder 44 and is fixed by a bolt 47. Therefore, the base 45 is replaceably attached by the bolt 47. The introduction cylinder 44 may be formed in a bottomed cylinder shape and integrally formed with a mouthpiece having a discharge port opened at the bottom.

It is configured as described above. Therefore, when the rubber material separately kneaded and adjusted by a kneader such as a kneader is charged into the hopper 32, the rubber material is charged into the charging port 3
It enters into the main body container part 30 from 1, 31 and is kneaded and fed toward the central part of the main body container part 30 by the screw blades 33C and 34C and the screw blades 33D and 34D which rotate in mutually opposite directions. Then, by the rotation of the screw blades and by being pressed by the pressing member 40 as described above, the rubber material is sent to the bottom portion of the main body container portion 30 and introduced into the introduction cylinder 44 by a predetermined pressure, From the discharge port 46, it is extruded downward in a strip shape or a bar shape. The extruded rubber material is supplied as it is to a charging port of an extruder (not shown), or separately prepared into a pellet-like rubber material piece by a cutting machine or the like.

In the present invention, the screw blades 33C, 33
A rotary shaft 33 to which D is fixed, a screw blade 34C,
34D is arranged in parallel with the rotating shaft 34 to which the fixed blade 34D is fixed, and the screw blade 33C and the screw blade 33D, and the screw blade 34C and the screw blade 34D are formed in the opposite screw blades to form the rubber material as the main body. Since it is configured to be fed into the central portion of the container portion 30 and pushed outward from the portion, the rotary shafts 33, 34 can be supported by the main body container portion 30 at both ends thereof, and therefore the bearing 33
The A, 33B and the bearings 34A, 34B can have a simple structure that is not so rigid and large-scale, and can be downsized and the cost can be significantly reduced. Since the screw blades are parallel to each other, the shearing force is somewhat low, but it can be suitably used for materials having relatively low hardness such as butyl rubber and silicone rubber. Furthermore, when used exclusively for these materials, the load on the drive motor is also significantly reduced, so a small drive motor with a relatively small output can be used, and in this respect as well, downsizing and cost reduction can be achieved. It will be possible.

Although the present invention has been variously described with reference to the preferred embodiments, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. Of course.

[0015]

According to the rubber feeder device of the present invention, the two rotary shafts to which the two screw blades are fixed are arranged in parallel, and the two screw blades on each rotary shaft are oriented in opposite directions. Since the rubber material is formed in the screw blade of the above to be sent to the central part of the main body container part and pushed out outward from the discharge port, both rotary shafts can be supported by both ends of the main body container part, thus, Both bearings can be made to have a simple structure that is not so rigid and large-scale, and can be downsized and the cost can be significantly reduced. In addition, when used in a dedicated machine for rubber materials with relatively low hardness such as butyl rubber and silicone rubber, the load on the drive device is also significantly reduced, so it is possible to use a small drive device with a relatively small output. In terms of size, it is possible to reduce the size and cost.

[Brief description of drawings]

FIG. 1 is a plan view of a rubber feeder device.

FIG. 2 is a front sectional view of a rubber feeder device.

FIG. 3 is a side sectional view of a rubber feeder device.

FIG. 4 is an explanatory plan view showing a conventional example.

[Explanation of symbols]

 30 main body container part 31 input port 32 hopper 33, 34 rotating shaft 33A, 33B bearing 34A, 34B bearing 33C, 33D screw blade 34C, 34D screw blade 35, 36 synchro gear 40 pressing member 42 opening 44 introduction cylinder (introduction chamber) 45 mouths 46 outlets

Claims (3)

[Claims] 1. A rubber feeder device into which a kneaded rubber material is charged and which pushes out the charged rubber material into a strip shape or a rod shape, and a main body container part having an input port opened on the upper surface side, and a main container part inside the main body container part. Two rotating shafts are arranged in parallel and are rotatably opposed to each other in opposite directions in the main body container part, and rotating shafts are supported on both sides of the rotating shafts, and a central part is formed on each circumferential surface of the rotating shafts from both ends of the rotating shafts. Two screw blades, which are arranged and fixed toward each other, and which are opposite to each other, and which feed the rubber material toward the central portion of the main body container portion by rotating the rotating shaft, and the rotating shaft. A drive device, an opening opening in the lower central part of the main body container part, an introducing chamber communicating with the opening part and provided in the main body container part, and a rubber material provided in a strip shape in the introducing chamber. Or push it like a stick Rubber feeder apparatus characterized by comprising a discharge port of Sutame. 2. A pressing member fixed to the main body container portion is located at a central portion of an upper surface opening of the main body container portion and above a portion where the rubber material is fed by the screw blades. The rubber feeder device according to claim 1. 3. The rubber feeder device according to claim 1, wherein the opposing screw blades fixed to the two rotary shafts are intertwined with each other.