JP2818793B2 - Kneading mixer rubber sheeting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates, in the kneading process of the rubber material, to a kneading mixer rubber sheeting apparatus for molding a kneaded rubber kneaded at a kneading mixer rubber sheet material of constant width and thickness.

[0002]

2. Description of the Related Art Conventionally, in a kneading process of a rubber material before forming a tire, a kneading mixer for kneading a rubber material compounded at a predetermined ratio and a kneaded rubber taken out of the kneading mixer are fixed in width. In addition, a kneading mixer rubber sheeting device for forming a rubber sheet material having a thickness is used in combination. For example, JP-A-60-15110
In the publication, a kneading mixer and a roller head extruder,
Using those disposed a kneading mixer rubber sheeting device in series two pairs, the rubber sheet material of constant width and thickness of the kneading rubber kneaded in the first kneading mixer first kneading mixer rubber sheeting device molded, after re-kneaded with sulfur is supplied to the second kneading Mi <br/> Kisa, second mixing
It is described that a rubber sheet material having a constant width and thickness is formed by a kneading mixer rubber sheeting device.

[0003] shows an example of such a kneading mixer rubber sheeting device in FIGS. 2 and 3, the input of kneading rubber is kneaded by a kneading Mi <br/> Kisa upward (to shown) is turned on A chute 100 having an opening 101 and a transfer chamber 11 formed in a substantially semi-cylindrical shape at the lower end, and a tubular transfer path 1 extending in the axial direction from one axial end of a transfer chamber 102.
03, a pusher conduit 104 extending obliquely upward to communicate with a side surface near the other axial end of the transfer chamber 102, and a screw rotor disposed through the transfer path 103 from inside the transfer chamber 102. 111, a pusher 112 movably installed in the pusher pipeline 104, and a hydraulic cylinder 113 installed outside the pusher pipeline 104
And a push rod 11 connected to an end of a pusher 112, an output rod of a hydraulic cylinder 113, and 114.
5 and a pair of calender rolls 116 provided at the exit side end of the conveying path 103. The kneaded rubber kneaded by the kneading mixer put into the chute 100 is caught by the screw rotor 111 and exits. Transferred to the side,
It is formed into a rubber sheet material 117 having a predetermined width and thickness by a calender roll 6. Since the condensed rubber is hard to be caught in the screw rotor 111, the condensed rubber is transferred to the screw rotor 111 by the pusher 112. Pressing it so that it gets caught smoothly.

[0004]

However, in the above-mentioned conventional kneading mixer rubber sheeting device, since the tip of the pusher 112 is formed in a plane, the tip when the pusher 112 reaches the lowest point is A space having a substantially triangular cross section is formed between the outer periphery of the screw rotor 111 and the bottom wall of the transfer chamber 102,
The condensed rubber present in the space is not caught by the screw rotor 111 without being pressed by the pusher 112, and the condensed rubber present in the space is not transferred to the outlet side. There is a problem that the residual rubber is generated without being caught in the screw rotor 111. When the residual rubber is generated, the residual rubber is mixed into the supplied kneaded rubber in the next kneading process, and the rubber material is mixed. There was a problem of causing change.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a kneading mixer capable of preventing the generation of residual rubber in a kneading process of a rubber material and reliably forming all the supplied kneaded rubber into a rubber sheet material having a constant width and thickness. It is to provide a rubber sheeting device.

[0006]

Kneading mixer rubber sheeting apparatus of the present invention in order to achieve the above object In order to achieve the above, one of the kneading rubber from the kneading <br/> mixer provided in the lower part of the chute to be supplied In a kneading mixer rubber sheeting device provided with a screw rotor and a pusher provided on the side of the screw rotor, a pressing surface formed of a curved surface is provided at the tip of the pusher facing the side surface of the screw rotor. There, since the gap formed between the outer periphery of the pressing surface and the screw rotor of the pusher can be made extremely small, the kneaded rubber is kneaded by a kneading Mi <br/> Kisa put into the chute, the pusher When pressed against the screw rotor by the screw so that it is smoothly wound, the rubber rubber between the pressing surface and the screw rotor is surely swept. It can be transported without remaining the condensed rubber by pressing it against the clew rotor.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A chute 1 having a transfer chamber 11 formed at an upper end thereof, into which a kneaded rubber kneaded by a kneading mixer (not shown) is introduced, and having a transfer chamber 11 formed in a substantially semi-cylindrical shape at a lower end thereof;
1, a tubular transport path 2 extending in the axial direction from one axial end, a pusher conduit 3 extending obliquely upward to communicate with a side surface near the other axial end of the transport chamber 11, Transfer room 1
1, a screw rotor 4 disposed through the conveyance path 2, a pusher 5 movably installed in the pusher pipe 3, and a hydraulic cylinder 6 installed outside the pusher pipe 3. A push rod 8 connected to the end of the pusher 5, the output rod 7 of the hydraulic cylinder 6, and a pair of calender rolls provided at the outlet end of the transport path 2 (not shown).

At the tip of the pusher 5, there is provided an auxiliary pressing portion 9 having a pressing surface 9A on the screw rotor 4 side formed as a curved surface, and the auxiliary pressing portion 9 has at least two orthogonal side surfaces 9B and 9C. And a pressing surface 9A which is a curved surface. The cross section has a substantially right-angled triangle or a substantially trapezoidal shape (in this embodiment, substantially trapezoidal shape), and the oblique side has a curved shape (in this embodiment, a circular arc). 9A is the upper end (chute 1 side end)
The distance between the outer periphery of the screw rotor 4 and the lower end (side surface 9C
Side end) and the outer periphery of the screw rotor 4.
Of the transfer chamber 1
1, so that when the pusher 5 reaches the lowest point, only a slight gap remains between the pressing surface 9A and the outer periphery of the screw rotor 4.

In the above embodiment, the auxiliary pressurizing section 9 is formed separately from the pusher 5, but the pusher 5 and the auxiliary pressurizing section 9 may be formed integrally. Also,
The rotation direction of the screw rotor 4 in the present embodiment is clockwise, that is, clockwise in FIG.

According to this configuration, the gap formed between the pressing surface 9A of the auxiliary pressing portion 9 and the outer periphery of the screw rotor 4 can be made extremely small.
When the kneaded rubber kneaded by the kneading mixer put into the screw rotor 4 is pressed against the screw rotor 4 by the pusher 5 so as to be smoothly rolled up, a gap between the pressing surface 9A of the auxiliary pressing unit 9 and the screw rotor 4 is formed. The condensed rubber can be reliably transferred to the screw rotor 4 without causing the condensed rubber to remain.

[0011]

Since the present invention is configured as described above, the following effects can be obtained. The kneading mixer rubber sheeting device is provided with a pressing surface formed of a curved surface at the tip of a pusher facing the side surface of the screw rotor, and a gap formed between the pressing surface of the pusher and the outer periphery of the screw rotor. When the kneaded rubber kneaded by the kneading mixer put into the chute is pressed against the screw rotor by the pusher so as to be smoothly wound, the distance between the pressing surface and the screw rotor can be reduced. The condensed rubber can be transferred without leaving the condensed rubber without being pressed by the screw rotor.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a schematic configuration of a kneading mixer rubber sheeting device according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a schematic configuration of a conventional kneading mixer rubber sheeting device.

FIG. 3 is a cross-sectional view showing a schematic configuration of a conventional kneading mixer rubber sheeting device in different directions.

[Explanation of symbols]

1 chute, 11 transfer chambers, 4 screw rotors,
5 Pusher 6 Hydraulic cylinder, 9 Auxiliary pressure unit

Claims (1)

(57) [Claims] And 1. A single screw rotor kneading rubber from kneading mixer is provided in the lower portion of the chute to be supplied, in the kneading mixer rubber sheeting apparatus having a pusher provided on the side of the screw rotor,
A push surface formed by a curved surface is provided at the tip of the pusher facing the side surface of the screw rotor.
Kneading mixer rubber sheeting device.