JPH0615637A - Kneading device - Google Patents

Abstract

PURPOSE:To perform the optimum kneading, by a method wherein a device possesses a pair of blades possessing a right and left guide face guiding a rolled sheet so that the rolled sheet is overlapped in the direction of the center line of the rolled sheet by a rotation direction of the center line of the rolled sheet by a rotation of a sheet wind-up roll. CONSTITUTION:A kneading device 1 possesses a sheet wind-up roll 2, a confronting roll 3 which is confronted with the sheet wind-up roll 12, makes its axial line parallel with that of the sheet wind-up roll 2 and arranged by possessing a fixed gap and a pair of blades 4, 4. In the blades 4, 4, a rake face 4b starting from an edge 4a coming into contact with a circumferential surface of the sheet wind-up roll 2 is provided and a right and left guiding face 4c guiding a rolled sheet 5 which is continued to the rake face 4b and peeled off by the rake face 4b so that the rolled sheet 5 is folded back toward the center line of the rolled sheet 5 is provided. A rear guide face 4d guiding the rolled sheet 5, which is continued to the rake face 4b and peeled off by the rake face 4b, so that the rolled sheet 5 is folded back to the opposite side of an advancing direction of the rolled sheet 5 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kneading device, and more specifically, a kneading sheet having a predetermined width by kneading with a sheet winding roll and a facing roll and adjusting the width of a roll sheet wound on the sheet winding roll. The present invention relates to a kneading device capable of efficiently manufacturing a kneading machine.

[0002]

2. Description of the Related Art Generally, a kneading machine has a pair of heating rolls arranged in parallel. The gap between the pair of heating rolls can be freely adjusted, the rotation direction and the rotation speed can be freely adjusted, and the temperature of the heating rolls can be freely set. It has become. The initial gap between the pair of heating rolls is set to be extremely small. By using this kneading device, materials such as vinyl chloride resin and silicone resin, and materials such as rubber and elastic polymer such as EPDM can be kneaded to produce a kneading sheet.

Materials are kneaded in the following manner using this kneading device. A predetermined amount of powdery material is supplied onto the gap between the heating rolls. Since there is a slight gap between the pair of heating rolls, most of the powdery raw material is above the gap between the pair of heating rolls even if a small part of the powdery raw material may fall through the gap. Stored in a mount.

Therefore, by heating the heating roll to a predetermined temperature and rotating the pair of heating rolls at different rotation speeds or at the same rotation speed, shearing and heat energy are applied to the powdery material on the heating roll. .
The powdery material itself generates heat by the application of shearing force by the heating roll.

[0005] The powdery material, which is in a semi-molten state due to the heat generated by the material itself and the heating by the heating roll, is dripped into a sheet form from the gap between the pair of heating rolls which is slightly further widened, and the tip end portion is dripped into the sheet form. Is further hung by the rotation of the heating roll, and the tip end thereof hung in a sheet shape is wound around the heating roll. As a result, in the pair of heating rolls, the material in a semi-molten state or a molten state is wound around one heating roll in a sheet shape,
Moreover, the molten resin is accumulated in the gap between the pair of heating rolls (this pool may be referred to as a bank).

When the pair of heating rolls are rotated for a predetermined time in this state, kneading is performed in the bank. By gradually expanding the gap between the pair of heating rolls as the kneading in the bank progresses, the wall thickness of the roll sheet that is being fed to one heating roll increases and the volume of the bank decreases. . With the bank completely disappeared, the kneading by the heating roll is stopped and the resin sheet is separated from the heating roll. Here, the heating roll in which the sheet revolves in a roll is referred to as a sheet winding roll, and the heating roll opposite to the sheet winding roll is referred to as a facing roll.

In the conventional kneading device, when the materials are kneaded, the width of the roll sheet wound around the sheet winding roll increases with the passage of time. Therefore, a pair of width regulating plate members having a bottom end portion having the same curvature surface as the peripheral surface of the sheet winding roll are erected on the peripheral surface of the sheet winding roll so that the width of the roll sheet becomes a predetermined width. To do. However, the width regulating plate member merely regulates the width of the roll sheet and does not contribute to the kneading action.

On the other hand, in the conventional kneading device, the kneading action is achieved by the roll sheet entering the bank formed in the gap between the facing roll and the sheet winding roll. In order to make this kneading effect efficient, the relative speed between the facing roll and the sheet winding roll is adjusted, or the temperature of these rolls is adjusted.

However, the above-mentioned kneading action in the conventional kneading apparatus is not yet sufficient, the kneading takes time, and the kneading operation and the roll sheet width-shifting operation are separate, so that the kneading operation as a whole is complicated. There is a problem that is.

The present invention has been made to solve the above problems. That is, it is an object of the present invention to provide a kneading device that makes it possible to efficiently knead materials and perform kneading and roll sheet width adjustment at the same time. Another object of the present invention is to provide a kneading device capable of efficiently performing kneading.

[0011]

The invention according to claim 1 for solving the above-mentioned problems is directed to a facing roll, a sheet winding roll arranged to face the facing roll, and the sheet winding roll. Placed on top,
A rake surface that peels the roll sheet from the sheet winding roll, a rear guide surface that guides the peeled roll sheet so as to be folded in the direction opposite to the direction in which the roll sheet advances by the rotation of the sheet winding roll, and the peeling 3. A kneading device, comprising: a pair of blades having left and right guide surfaces that guide the rolled roll sheet so as to be folded in the direction of the center line of the roll sheet by rotation of the sheet winding roll. The invention is a counter roll, a sheet winding roll arranged opposite to this counter roll, and a rake face for peeling the roll sheet from the sheet winding roll, and the roll being arranged on the sheet winding roll. The roll sheet advances by rotating the sheet winding roll. One side having a rear guide surface that guides the sheet to be folded in the direction opposite to the direction and a left and right guide surface that guides the peeled roll sheet to be folded to the end side of the roll sheet by the rotation of the sheet winding roll. A kneading device having a blade, and the invention according to claim 3 is characterized in that the blade is installed on a sheet winding roll so as to be displaceable in a roll axial direction by a drive source. The kneading device according to claim 2.

[0012]

According to the kneading device of claim 1, the rake face of the blade causes the roll sheet which is rotated around the surface of the sheet winding roll to be peeled off from the surface of the sheet winding roll, and the peeled roll sheet is The rear guide surface folds the roll sheet on the side opposite to the rotation direction, and the left and right guide surfaces fold the roll sheet in the center direction. The roll sheet peeled off from the surface of the sheet winding roll is stacked on the side opposite to the rotation direction of the roll sheet and is folded in the center line direction of the roll sheet, and on the gap between the opposing roll and the sheet winding roll. And is kneaded by rotating the facing roll and the sheet winding roll. The pair of blades also regulates the width.

According to the kneading apparatus of the second aspect, the roll sheet in which the rake face of the blade is wound around the surface of the sheet winding roll is peeled from the surface of the sheet winding roll, and the peeled roll sheet is The rear guide surface folds the roll sheet on the side opposite to the rotational direction, and the left and right guide surfaces fold the roll sheet to the outside, that is, to the end portion side of the roll sheet. The roll sheet peeled off from the surface of the sheet winding roll is stacked on the side opposite to the rotation direction of the roll sheet and is folded on the end side of the roll sheet, and on the gap between the opposing roll and the sheet winding roll. And is kneaded by rotating the facing roll and the sheet winding roll.

Each of the pair of blades according to claim 1 and the one blade according to claim 2 can be moved in the axial direction of the sheet winding roll by a drive source, and optimal kneading can be performed. .

[0015]

Embodiments of the present invention will be described below.
FIG. 1 is a schematic explanatory view showing a kneading device which is an embodiment of the invention described in claim 1. As shown in Figure 1,
This kneading device 1 includes a sheet winding roll 2 and a facing roll 3 which is arranged so as to face the sheet winding roll 2 with their axes parallel to each other with a predetermined gap.
It has a pair of blades 4 and 4.

The pair of blades 4 and 4 have a shape having a mirror image relationship with each other with respect to the other blade 4, and face each other on the upper surface of the sheet winding roll 2 along the axis of the sheet winding roll 2. It is movably arranged by an appropriate drive source such as a motor. In the initial state, the pair of blades 4 and 4 are positioned outside the width of the roll sheet 5 and on the upper peripheral surface of the sheet winding roll 2.

As shown in FIGS. 2 and 3, the blades 4 and 4 are provided with a rake face 4b starting from an edge 4a which is in contact with the peripheral surface of the sheet winding roll 2. As shown in FIG. The roll sheet 5 which is continuous with the roll sheet 5 and is peeled off by the rake face 4b.
Left and right guide surfaces 4c are provided to guide the rake surface toward the center line of the rake surface. As shown in FIG.
And a rear guide surface 4d for guiding the roll sheet 5 which is continuous with the rake face 4b and is peeled off by the rake face 4b so as to be folded back to the side opposite to the traveling direction of the roll sheet 5.

The rake face 4b of the blades 4 and 4
1, the edge 4a is formed obliquely at a predetermined angle θ with respect to the circumference around the axis of the sheet winding roll 2. Since the edge 4a is formed obliquely at the angle θ, when the pair of blades 4 and 4 are moved so as to approach each other, the roll sheet 5 formed up to that time is cut, and the cut roll sheet is cut. The end of 5 can be scooped up. It is desirable that the angle formed by the rake face 4b of the blades 4 and 4 and the peripheral face of the sheet winding roll 2 is as sharp as possible. Further, as shown in FIG. 2, the left and right guide surfaces 4
c is formed continuously from the rake face 4b, and the end of the roll sheet 5 scooped from the sheet winding roll 2 is directed toward the center of the roll sheet 5, that is, the roll sheet 5 on the sheet winding roll 2. As long as it is bent so that it can be folded back toward the center of its width, there is no limitation on its curvature. Here, folding back toward the center of the roll sheet 5 does not only mean folding back so that the end of the scooped roll sheet 5 reaches the width center of the roll sheet 5 strictly. ,
This means that the widthwise direction of the roll sheet 5 is the inner side, and the end portions of the roll sheet 5 are folded back toward the inner side. As shown in FIG. 3, the rear guide surface 4d is formed continuously from the rake surface 4b, and the sheet winding roll 2
The curvature and the like are not particularly limited as long as the end portion of the roll sheet 5 scooped from above can be folded back to the side opposite to the rotation direction of the roll sheet 5.

The operation of the kneading device 1 having the above structure will be described. In the initial state, the pair of blades 4 and 4 respectively stand by at intervals wider than the width of the roll sheet 5 when the roll sheet 5 is wound around the surface of the sheet winding roll 2. When a material such as a thermoplastic resin is kneaded by the facing roll and the sheet winding roll 2, the thermoplastic resin roll sheet 5 becomes a roll-shaped sheet, that is, the roll sheet 5 on the surface of the sheet winding roll 2. Go. However, since the width of the roll sheet 5 is not regulated in this state, both ends in the width direction of the roll sheet 5 are wavy.

Therefore, the pair of blades 4 and 4 are moved so as to approach each other. The edge 4a of the rake face 4b of the blades 4 and 4 cuts the end of the roll sheet 5 as the blade moves. Further, the pair of blades 4 and 4 are moved so as to approach each other. A pair of blades 4, 4
When the distance between the blades reaches a predetermined length, the pair of blades 4,
Stop 4 In this state, since the sheet winding roll 2 is rotating, the end portion of the roll sheet 5 relatively advances toward the rake face 4b, and the end portion of the roll sheet 5 is cut by the edge 4a. Sheet 5
As shown in FIG. 4, the notched end portion of the sheet is scooped up, guided from the scoop surface 4b to the left and right guide surfaces 4c, folded back toward the inside of the roll sheet 5, and
As shown in, the end of the rolled-up roll sheet 5 is folded back toward the side opposite to the rotation direction of the roll sheet 5.

As a result, the roll sheet 5 has its both ends scooped by the pair of blades 4 and 4, and each of the scooped both ends is rolled sheet 5.
Of the roll sheet 5 as well as being folded back to the inside of the roll sheet 5 and the folded portion is conveyed to the gap between the opposing roll and the sheet winding roll 2 and kneaded with the bank 6 already existing in the gap. become.

The rake face 4b of the pair of blades 4 and 4
The portion that cannot be picked up is rotated as the sheet winding roll 2 as the roll sheet 5 having a constant width. In other words, the width of the roll sheet 5 is regulated by the pair of blades 4 and 4.

FIG. 7 is an explanatory view showing the outline of a kneading apparatus which is an embodiment of the invention described in claim 2. As shown in FIG. 7, this kneading device has one blade 7 arranged on the sheet winding roll 2. As shown in FIGS. 7 and 8, the blade 7 has a rake face 7a for peeling the roll sheet from the sheet winding roll 2,
A rear guide surface (4 in FIG. 3) that guides the peeled roll sheet so as to be folded in the direction opposite to the direction in which the roll sheet advances by the rotation of the sheet winding roll.
This corresponds to the surface indicated by d. ) And the peeled roll sheet are guided by the rotation of the sheet winding roll 2 so as to be folded and folded toward the end portion side of the roll sheet.

The blade 7 shown in FIG. 7 cuts a roll-shaped sheet wound around the sheet winding roll 2 at the central portion of the sheet and peels it off, and the peeled sheet portion is defined as the direction of travel of the roll sheet. Fold it to the opposite side and to the end of the roll sheet. Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and the design can be appropriately changed within the scope of the gist of the present invention.

[0025]

According to the present invention, when kneading a sheet material while forming a bank in the gap between the facing roll and the sheet winding roll, both ends of the roll sheet formed on the sheet winding roll are scooped up to form a roll sheet. The end of the roll sheet scooped to the opposite side of the rotation direction and the inside of the roll sheet is complicatedly folded, and the folded lumps are carried to the bank and kneaded together with the bank, so the kneading effect is excellent and the sheet It is possible to provide a kneading device capable of simultaneously controlling the width of a roll sheet on a winding roll.

[Brief description of drawings]

FIG. 1 is a top view showing a kneading device which is an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

3 is a sectional view taken along the line BB in FIG.

FIG. 4 is a partial cross-sectional view for explaining the operation of the present invention.

FIG. 5 is a partial cross-sectional view for explaining the operation of the present invention.

FIG. 6 is a partial cross-sectional view for explaining the operation of the present invention.

FIG. 7 is a top view showing a kneading device which is an embodiment of the present invention.

FIG. 8 is a front view showing a kneading device which is an embodiment of the present invention.

[Explanation of symbols]

 1 Kneading device 2 Sheet winding roll 3 Opposite roll 4 Blade 4a Edge 4b Rake surface 4c Left and right guide surface 4d Rear guide surface 5 Roll sheet 7 Blade 7a Rake surface 7b Left and right guide surface

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[Procedure amendment]

[Submission date] July 7, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Fig. 2]

[Figure 4]

[Figure 1]

[Figure 3]

[Figure 5]

[Figure 6]

[Figure 7]

[Figure 8]

Front Page Continuation (72) Inventor Keisuke Kato 3-43-2, Ebisu, Shibuya-ku, Tokyo Nikkiso Co., Ltd.

Claims (3)

[Claims] 1. A facing roll, a sheet winding roll arranged to face the facing roll, a roll sheet arranged on the sheet winding roll, and a roll sheet for peeling the roll sheet from the sheet winding roll, and a peeling surface. The rolled roll sheet is guided by the rotation of the sheet winding roll so as to be folded back in the direction opposite to the direction in which the roll sheet advances, and the peeled roll sheet is rotated by the sheet winding roll. A kneading device, comprising: a pair of blades having left and right guide surfaces that guide so as to be folded in the direction of the center line. 2. A facing roll, a sheet winding roll arranged to face the facing roll, a roll sheet arranged on the sheet winding roll, and a roll sheet for peeling the roll sheet from the sheet winding roll. The rolled roll sheet is guided by the rotation of the sheet winding roll so as to be folded back in the direction opposite to the direction in which the roll sheet advances, and the peeled roll sheet is rotated by the sheet winding roll. And a pair of blades having left and right guide surfaces that guide the end portions to be folded and folded. 3. The kneading device according to claim 1, wherein the blade is installed on a sheet winding roll so as to be displaceable in a roll axial direction by a drive source.