JP3117578B2 - Automatic kneading method using a roll kneader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to injection molding, sheet rolling,
The present invention relates to an automatic kneading method using a roll kneader, which uniformly and efficiently kneads a rubber or synthetic resin material used for film rolling, extrusion molding and the like.

[0002]

2. Description of the Related Art In order to knead pigments and other additives into resin materials, a screw kneader is used to uniformly knead evenly and to obtain uniform colors efficiently. In the case of individual kneading, it takes time and effort to clean the inside of the screw kneader, which lowers the operation rate of the screw kneader and eventually increases the cost. Therefore, a roll kneader which is easy to clean and has excellent versatility is suitable for kneading various kinds and small amounts.

[0003] A roll kneader feeds a granular resin material between a pair of front and rear rolls having different rotation speeds and winds the material around a front peripheral surface of a front roll having a high rotation speed to form a pair of front and rear rolls. After repeated kneading, the thin strip having a predetermined width is peeled off from the front roll and continuously taken out in a strip. It is difficult to efficiently and uniformly knead the resin material only by continuously passing the resin material between the pair of front and rear rolls from above. Therefore, the resin material wound around the front roll is usually cut with a knife or the like. , By moving in the axial direction of the front roll, to promote the kneading in the width direction of the resin material fed from the pair of front and rear rolls, and further, winding up the resin material fed on the upper side of the front roll. In this case, the resin material fed from the pair of front and rear rolls is kneaded in the front-rear direction by, for example, being put between a pair of front and rear rolls. The above-mentioned kneading operation in a bad environment such as heat and dust is extremely severe and requires considerable skill.

The uniformly kneaded resin material is cut (peeled) from a front roll by a cutting device disclosed in, for example, Japanese Patent Publication No. 57-30045, and sent to a belt conveyor as a belt having a predetermined width. It is.

[0005] By the way, a new granular resin material is added one before and after.
At the beginning, the resin material passes between the pair of front and rear rolls without being kneaded well when dropped into the pair of rolls, and thus falls without being wound around the front roll. Therefore, if a new resin material is introduced between a pair of front and rear rolls while a part of the resin material kneaded last time is wound around the front roll, the remaining resin material of the previous time becomes a seed and a new resin material is obtained. Since the material is wound around the front roll, continuous work is possible, but it is not applicable when kneading different resin materials for color change or the like.

[0006] An endless belt is stretched from the lower side to the upper side of the front roll along the front peripheral surface, and the resin material dropped from between the pair of front and rear rolls is scooped up by the endless belt. A device that returns to the upper side of a pair of rolls is also known, but since a part of the previously kneaded resin material adhering to the endless belt mixes with the new resin material, in the case of changing colors, cleaning the endless belt There is a problem that it takes time and effort.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the object of the present invention is to eliminate the need for the above-mentioned severe manual work, and to automatically wind the resin material around the front roll after charging the resin material. During kneading, the band-shaped resin material wound around the front roll is switched to the left and right to promote kneading in the width direction and the front-rear direction. An object of the present invention is to provide an automatic kneading method using a roll kneader, which is automatically cut out of a roll into a band having a predetermined width.

[0008]

In order to achieve the above object, a method of the present invention is to reduce the gap between a pair of front and rear rolls to 1 mm or less, and then to charge a resin material from above to between the pair of front and rear rolls. Kneading is started, and after a predetermined time, a pair of front and rear roll gaps is widened to about 15 mm, and a pair of right and left winding rollers are reciprocated right and left along the front peripheral surface of the front roll. The gap between the rolls is reduced to about 5 mm, and the left and right pair of winding rollers are gradually brought closer to the center of the front peripheral surface of the front roll according to the remaining amount of the resin material. Is cut out from the upstream side of the winding roller to a width smaller than the interval between the pair of left and right winding rollers.

[0009]

According to the present invention, when a new resin material is charged, the gap between a pair of front and rear rolls is set to 2 mm or less, preferably about 1 mm, so that the resin material at the beginning of the charging is not sufficiently kneaded but is thin. Without falling, it is wrapped thinly on the front roll and returned to the upper side of the pair of front and rear rolls.

After kneading for a predetermined time, the gap between the pair of front and rear rolls is increased to about 15 mm. As a result, the resin material is efficiently wound thickly around the front roll and returned to the upper side of the pair of front and rear rolls, while being cut back in the width direction by a pair of left and right winding rollers reciprocating along the front peripheral surface of the front roll. Then, it is returned to the upper side of a pair of front and rear rolls in a spiral cylindrical shape.

After the kneading is completed, the gap between the pair of front and rear rolls is reduced to about 5 mm. The resin material wound around the front roll is continuously sent out to the belt conveyor as a strip having a predetermined width by a cutting device at the center of the front peripheral surface of the front roll. At this time, a pair of left and right winding rollers are gradually brought closer to the center of the front peripheral surface of the front roll according to the remaining amount of the resin material. However, it stands by at the center of the front roll in a state separated from the predetermined width of the strip.

The resin material that has not been cut out of the front roll moves upward on the front peripheral surface of the front roll while being swept toward the center by a pair of left and right winding rollers, and then, between the pair of rolls. Is re-entered. If the resin material is reduced, the distance between the pair of winding rollers is further reduced,
All of the resin material is sent out to the belt conveyor by the cutting device, and no manual operation is required.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of a roll kneader for achieving the method according to the present invention, FIG. 2 is a front view of the roll kneader omitting a cutting device and a gap adjusting device, and FIG. FIG. 4 is a side cross-sectional view of a sliding frame in the material winding mechanism, and FIG. 5 is a front view showing a main part of the right material winding mechanism. FIG. 6 is a front sectional view of a bearing portion of the front roll, FIG. 7 is a side sectional view of the cutting device, FIG. 8 is a front sectional view showing a main part of the cutting device, and FIG. 9 is a material winding mechanism. FIG. 4 is a developed plan view for explaining the operation of FIG.

[0014] As shown in FIG.
The ends of a pair of front and rear rolls 3 and 2 are supported by bearing units to be described later in openings 24 of a pair of side frames (stands) 1 erected on both sides of A, both of which are not shown. The front roller 3 is driven by the electric motor in directions opposite to each other (in the direction of the arrow x in FIG. 3) and at a peripheral speed that is about twice that of the rear roller 2. Such a configuration is the same as the conventional one.

The material winding mechanism A fixes a guide frame 9 to a front portion of the upper wall 1a of each side frame 1, supports a horizontal slide frame 14 on the guide frame 9, and applies a fluid pressure ( It is moved parallel to the front roll 3 by an actuator B (for example, pneumatic), and a conical, preferably hourglass-shaped winding roller 4 is supported at the inner end of the sliding frame 14. The take-up roller 4 is connected to a drive shaft 28 (FIG. 2) projecting downward from the sliding frame 14. As shown in FIG. 3, the drive shaft 28 of the winding roller 4 extends downward, more specifically, substantially toward the axis O of the front roll 3, but forward by an inclination angle α (about 15 to 25 °) with respect to the vertical plane. It is inclined to the front side of the roll 3, and the leading end surface of the winding roller 4 approaches the peripheral surface of the front roll 3.

As shown in FIG. 2, the drive shaft 28 of the winding roller 4 is supported by the gear box 7 and is rotationally connected to a shaft supported inside the sliding frame 14 by a bevel gear mechanism. Sliding frame 14
Of the motor 20 supported on the outer end of the sliding frame 14
Is driven through the V-belt 17. The V-belt 17 is stretched between a sheave 18 connected to the shaft of the electric motor 20 and a sheave 16 connected to the shaft 15 inside the sliding frame 14.

The actuator B has a piston 24 inserted into a cylinder 22 connected to the guide frame 9, and a rod 23 projecting from the piston 24 is connected to the lower end of the connecting plate 8. The connecting plate 8 is connected between the inner end of the sliding frame 14 and the gear box 7. Thus, the winding mechanism A is connected to the guide frame 9.
, The sliding frame 14 and the actuator B are integrally formed, and can be fixed to the upper wall 1a of the side frame 1 of the existing roll kneading machine. The front roll 3 is reciprocated in the axial direction of the front roll 3 independently or in conjunction with the actuator B.

As shown in FIG. 4, the guide frame 9 is formed by connecting a pair of front and rear frame plates 9a in a box shape by two upper and lower connecting plates 9c (FIG. 5). The upper and lower two pairs of guide rollers 10 and 12 are rotatably supported by shafts 10a and 12a. The hollow sliding frame 14 has a rectangular cross section, and is slidably supported on the upper and lower wall surfaces between the guide rollers 10 and 12. The front and rear wall surfaces of the sliding frame 14 are guided by a sliding plate 9b supported on the inner surface of the frame plate 9a. The actuator B has a flange 22 a connected to the cylinder 22 and a lower half of the guide frame 9. The guide frame 9 fixes the substrate 5 coupled to the lower end to the upper wall 1a of the side frame 1 with bolts.

As shown in FIG. 5, the inner end of the sliding frame 14 is connected to the connecting plate 8 and the gear box 7, and the end of the shaft 15 is connected to the connecting plate 8
Are supported by bearings 19 and protrude into the gear box 7 to which a bevel gear 25 is coupled. The drive shaft 28 of the winding roller 4 is supported by the gear box 7 by a pair of upper and lower bearings 27,
The bevel gear 26 connected to the upper end is meshed with the bevel gear 25. The drive shaft 28 supports the winding roller 4 via a key 30 that engages with the key groove 31a and the key groove of the shaft hole 31 of the winding roller 4 so that the winding roller 4 can be adjusted up and down. The key 30 is locked by a bolt 29 screwed to the boss of the winding roller 4.
The position of the winding roller 4 in the axial direction is maintained.

As shown in FIG. 3, the roll gap adjusting device F
Is a bearing unit 33 for supporting both ends of the front roll 3
Is moved back and forth along the opening 24 of the side frame 1 to adjust the gap t between the pair of front and rear rolls 3 and 2. For this reason, the side frame 1
The screw shaft 36 is screwed into the screw hole 36a in the front-rear direction.
The rear end (left end in the figure) of the screw shaft 36 projects into the opening 24 and is connected to the front end wall of the bearing unit 33.
4 is inserted. The split ring 35 is engaged with an annular groove provided at the end of the screw shaft 36, and is fixed to the connecting cylinder 34 by a plurality of bolts (not shown). The front end of the screw shaft 36 has a gear 37 supported inside the gear box 38 by a bearing 38a.
Are connected by a key 36b. The gear 37 is meshed with the worm shaft 39. The gear box 38 is fixed to a pair of right and left columns 40 erected on the base 1A. The worm shaft 39 has an end connected to a main shaft of an electric motor (not shown) supported on the gear box 38.

As shown in FIG. 6, the shaft portion 3a of the front roll 3
Is connected to the boss of the gear 78 by a key 78a, and the gear 78 forms a part of a speed reducer driven by an electric motor (not shown). In the bearing unit 33 supporting the right end shaft portion 3a, the bearing 74 has an inner ring fitted on the shaft portion 3a and an outer ring fitted on a hole of the case 77. Case 77
Are slidably supported on the flat surface 1b of the opening 24 of the side frame 1. The right side wall of the case 77 has a holding ring 7 fitted externally to the shaft portion 3a.
Sealed by the seal of 3a. A cap 72 is connected to the left side wall of the case 77 by a bolt 69. The cap 72 is hermetically sealed by a seal of a holding ring 73 fitted to the shaft portion 3a.

The cap 72 has a projecting piece 72a projecting upward.
To the left wall surface of the side frame 1. A key 75 is connected to each of the right side walls of the upper wall 1a and the side frame 1 by bolts 75a.
The key 75 is engaged with grooves 76 provided on the upper and lower surfaces of the case 77, respectively. A bearing unit 33 for supporting the left end shaft of the front roll 3 is similarly configured. Thus, left and right 1
The pair of bearing units 33 is a flat surface 1a of the opening 24 of the side frame 1.
Is supported so as to be relatively slidable in the front-rear direction (the direction perpendicular to the plane of FIG. 6), and the axial movement of the front roll 3 is prevented by the protruding piece 72 a and the key 75.

The gap t between the pair of rolls 3 and 2 is adjusted by the forward / reverse rotation of the screw shaft 36, and the amount of forward / reverse rotation of the screw shaft 36 is, for example, a rotation speed sensor disposed opposite the worm shaft 39. Alternatively, it is detected by an encoder (not shown) and fed back to a control circuit of an electric motor for driving the worm shaft 39.

As shown in FIG. 7, the material extracting device is mounted on a movable frame D, and the movable frame D is supported on a fixed frame 62 so as to be slidable back and forth. The fixed frame 62 may be a base 1A that supports the front roll 3. An actuator 68 is connected between the bottom of the movable frame D and the fixed frame 62. The actuator 68 has a piston inserted into a cylinder connected to the fixed frame 62, and a rod 67 projecting from the piston is connected to a mounting piece 62a projecting downward from the bottom plate 54b of the movable frame D.

The movable frame D is formed by connecting lower end edges of a pair of left and right frame plates 54 with a bottom plate 54b, and further connecting rear edges (right edges in FIG. 1) with a pair of upper and lower connecting plates 54a. Each connecting plate 54a supports electric motors 55 and 61 to be described later. A horizontal support shaft 65a is provided below the pair of left and right frame plates 54.
Thereby, the swing frame 64a is swingably supported. Preferably, the swing frame 64a is formed of a two-piece body, and the two-piece body is connected with a bolt or the like so as to be adjustable in expansion and contraction.

The swing frame 64a has a pair of left and right disk-shaped cutters 66 supported at its rear end by a shaft 66a. Swing frame 64a
Has a weight 64 coupled thereto. Accordingly, the swing frame 64
7a is rotated clockwise in FIG. 7 around the support shaft 65a, and presses the cutter 66 against the peripheral surface of the front roll 3. In order to adjust the interval s (FIG. 8) between the pair of left and right cutters 66, an endless chain 70 is stretched between a chain wheel 79 connected to the shaft 66a and one of two chain wheels supported on the support shaft 65a. An endless chain 71 is bridged between the other of the two chain wheels of the support shaft 65a and the wheel chain connected to the shaft 61a of the electric motor 61. When the shaft 66a supported by the bearing 80 on the swing frame 64a is rotated forward and backward, a pair of cutters 6 whose bosses are screwed to the screw shafts 66c of the shaft 66a in opposite directions.
The interval s of 6 is adjusted.

In order to push up the protruding piece 64b of the weight 64,
The actuator 63 is supported by the connecting plate 54a. The actuator 63 has a piston fixedly inserted into a cylinder fixed to the connecting plate 54a, and a rod projecting from the piston is inserted into the projecting piece 6.
4b. Projection piece 64 by actuator 63
When b is pushed up, the swing frame 64a is rotated counterclockwise about the support shaft 65a, and separates the cutter 66 from the front roll 3.

A shaft 57 is provided between the upper and lower intermediate portions of the pair of left and right frame plates 54.
The take-out roller 57 facing the front roll 3 is supported by a, and the drive roller 58 of the take-out conveyor is supported by the shaft 58a below the take-out roller 57. Take-out conveyor 57
Is constructed by wrapping an endless belt 59 between a roller 60 and a driving roller 58 supported on a base frame (not shown) projecting forward (to the right in FIG. 7) from the movable frame D. In order to drive the take-out roller 57 and the drive roller 58, an endless chain 56 is wound around the chain wheel of the shaft 55a of the electric motor 55, the chain wheel of the shaft 57a, and the chain wheel of the shaft 58a.

The narrow claw piece 43 is swingably supported on the support shaft 46 above the pair of left and right frame plates 54. More specifically, the claw piece 43 is sandwiched between a holder composed of upper and lower two plates 44 and 44 a so as to adjust the amount of protrusion, and a locking bolt 45 is provided.
Is fixed by The actuator 50 is connected between the lever 47 integrated with the holder and the supporting plate 53 supported by the connecting plate 54a. The actuator 50 has a cylinder connected to a support plate 53 by a pin 52, and a rod 49 protruding from a piston inserted into the cylinder is connected to a lever 47 by a pin 48.

In the automatic kneading method using the roll kneader according to the present invention, the gap t between the pair of front and rear rolls 3 and 2 is preferably reduced to 1 mm or less by the roll gap adjusting device F, and then the resin material C is charged and kneaded. After a predetermined time, the gap t between the pair of rolls 3 and 2 is widened to about 15 mm, and the pair of left and right winding rollers 4 reciprocate along the front roll 3. The gap t between the rollers 3 and 2 is reduced to about 5 mm, and the distance between the pair of right and left winding rollers 4 is adjusted to the front roll 3.
And the resin material wound around the front roll 3 is cut in front of the winding roller 4 (rotationally upstream portion) by a cutter 6.
6 is cut out.

The resin material C kneaded between the pair of front and rear rolls 3 and 2 is wound around the front roll 3 which rotates at a peripheral speed approximately twice that of the rear roll 2 and moves. Width of resin material C
The WO (FIG. 9) is regulated by a pair of left and right guide plates 32 (FIGS. 1 and 9) disposed above the pair of front and rear rolls 3 and 2.

As shown in FIG. 2, when the sliding frame 14 is moved to the center of the front roll 3 by the actuator B, the winding roller 4 is also moved to the center of the front roll 3. The resin material C wound around the front roll 3 is separated or scooped from the front roll 3 by the leading edge 4a (FIG. 5) of the winding roller 4 at the right side edge C0, and is scraped to the center side. Since the peripheral speed of the winding roller 4 is about 2 to 4 times faster than the peripheral speed of the front roll 3, the side edge C0 of the resin material C is scooped up from the front roll 3 by the winding roller 4, It is wound in a cylindrical shape along the drum-shaped peripheral surface of the roller 4 and is fed at a high speed in the tangential direction of the front roll 3.

Since the winding roller 4 having a drum shape is arranged to be inclined forward (upstream in the rotation direction of the front roll 3) from the vertex of the front roll 3, the winding roller 4 causes the resin material C to be removed. The side edge C0 is peeled off from the peripheral surface of the front roll 3 and is curled at the same time.
Then, it is sent to the upper side of the pair of front and rear rolls 3 and 2 and becomes slack and flat when slightly stagnating above the front and rear pair of rolls 3 and 2 and then between the front and rear pair of rolls 3 and 2. It is complicatedly drawn in and kneaded.

When the right winding roller 4 is pulled rightward,
The left winding roller 4 projects rightward, winds the left edge of the resin material C in the same manner, and feeds it between the pair of front and rear rolls 3 and 2. Thus, not only the mixing or dispersion of the resin material C in the width direction but also the mixing or dispersion in the front-back direction (flow direction) is promoted.

More specifically, referring to FIG. 9, a virtual imaginary band S1 in the longitudinal direction of the resin material C (width WO) before reaching the winding roller 4 is formed by the leading edge 4a of the winding roller 4 (FIG. 5). The right edge C0 is peeled off or scooped from the peripheral surface of the front roll 3 and is prevented from moving forward, so that the right edge C0 is caught on the drum-shaped peripheral surface of the winding roller 4 and is rotated by the rotation of the winding roller 4. It is sent to the center in the width direction (to the left in FIG. 9). Since the peripheral speed of the take-up roller 4 is about four times faster than the peripheral speed of the front roll 3, the resin material C is wound spirally in a plurality of layers at a lead angle β (about 14 °).

When the cylindrical body C1 spirally wound is separated from the winding roller 4, it is sent in the rotation direction of the front roll 3, and
When it is drawn between the pair of front and rear rolls 3 and 2, it overlaps a plurality of flat (width W1) layers, and each band S1 and the band S1 obliquely intersect with each other. Dispersion is promoted, and the mixture is crushed to the width WO while being kneaded between the pair of front and rear rolls 3 and 2.

The shape of the winding roller 4 is such that the lower end side approaching the peripheral surface of the front roll 3 has a small diameter and the upper end side has a large diameter, and is suitable for scooping the side edge CO of the resin material C at the leading edge 4a. There is a relatively small diameter disk portion, the upper side of the disk portion is slightly constricted, and the upper end side has a conical large diameter. Accordingly, the side edge CO of the resin material C is fed at a higher speed as the distance from the peripheral surface of the front roll 3 increases, and as a result, the side edge CO is spirally wound.

In FIG. 7, while the operation of the roll kneading machine is stopped, the movable frame D is moved forward (to the right in FIG. 7) along the fixed frame 62 by the actuator 68, so that the cleaning of the front roll 3 can be easily performed. I do. When the resin material C wound around the front roll 3 is taken out after the kneading, the movable frame D is moved to the position shown in FIG. 7 by the actuator 68 and cut out to a width that is a fraction of the width W0 of the resin material C. Axis 6 by motor 61
When the rotary shaft 6a is driven to rotate, as shown in FIG. 8, relative rotation occurs between the screw shaft portion 66c and the boss portion of each of the cutters 66, and the interval s between the pair of cutters 66 changes. The cutout width of the material C3 is adjusted.

As shown in FIG. 7, when the rod of the actuator 63 is retracted, the swing frame 64a is rotated clockwise about the support shaft 65a by the weight 64, and the pair of cutters 66 It is pressed against the peripheral surface. Accordingly, the central portion in the width direction of the resin material C is cut to the width s.
When the lever 47 is rotated clockwise about the support shaft 46 by the actuator 50, the claw piece 43 comes into contact with the peripheral surface of the front roll 3, and the resin material C3 having a width s is separated from the front roll 3. The width of the claw piece 43 is smaller than the minimum distance between the pair of cutters 66. The resin material C3 peeled off from the front roll 3 falls onto the take-out roller 57 and is sent out onto the endless belt 59 of the take-out conveyor. Thereafter, even if the claw piece 43 is separated from the front roller 3, the resin material C3 is continuously fed to the take-out conveyor.

When the taking out of the resin material C is interrupted, when the protruding piece 64b is pushed up by the actuator 63, the swing frame 64a rotates counterclockwise about the support shaft 65a, and the cutter 66 of the front roll 3 is moved. Move away from the surface. At the same time, when the actuator 47 rotates the lever 47 counterclockwise about the support shaft 46 to bring the claw piece 43 into contact with the take-out roller 57, the resin material C3 is cut, and thereafter, the resin material C is not cut out. It is sent to the upper side of a pair of front and rear rolls 3 and 2.

[0041]

According to the method of the present invention, as described above, the resin material is put into the space between the pair of front and rear rolls after the gap between the front and rear rolls is reduced to 1 mm or less, and kneading is started for a predetermined time. Later, the roll gap is widened to about 15 mm, and the pair of left and right winding rollers reciprocate left and right along the front peripheral surface of the front roll. After kneading, the front and rear pair of roll gaps are narrowed to about 5 mm. Move the pair of winding rollers closer to the center of the front peripheral surface of the front roll, and remove the resin material
Since cutting is performed from the upstream side of the winding roller between the pair of winding rollers, no severe manual work is required. It is returned to the upper side of the pair of front and rear rolls, and during kneading, the band-shaped resin material wound around the front roll is switched to the left and right to promote kneading in the width direction and the front and rear direction,
After the completion of the kneading, the resin material is automatically cut out from the front roll into a band having a predetermined width.

[Brief description of the drawings]

FIG. 1 is a perspective view of a roll kneader for achieving the method according to the present invention.

FIG. 2 is a front view of the roll kneading machine, omitting a cutting device and a roll gap adjusting device.

FIG. 3 shows a material winding mechanism, a roll gap adjusting device, and front and rear 1
It is a side sectional view showing a pair of rolls.

FIG. 4 is a side sectional view of a sliding frame in the material winding mechanism.

FIG. 5 is a front sectional view showing a main part of the right material winding mechanism.

FIG. 6 is a front sectional view of a bearing portion of a front roll.

FIG. 7 is a side sectional view of the cutting device.

FIG. 8 is a front sectional view showing a main part of the cutting device.

FIG. 9 is a developed plan view illustrating the operation of the material winding mechanism.

[Explanation of Signs] A: Material winding mechanism C, C2, C3: Resin material C1: Cylindrical body E: Cutting device F: Gap adjusting device 1: Side frame 2: Rear roll 3: Front roll 4: Rolling roller 14: sliding frame 28: drive shaft 33: bearing unit 36: screw shaft 43: claw piece 59: endless belt 66: cutter

Claims (2)

(57) [Claims] After a pair of front and rear roll gaps is reduced to 1 mm or less, a resin material is introduced from above into a pair of front and rear rolls to start kneading, and after a predetermined time, the front and rear pair of roll gaps are reduced to about 1 mm.
Widen to 5 mm and reciprocate a pair of left and right winding rollers left and right along the front peripheral surface of the front roll, narrow the pair of front and rear rolls to about 5 mm after kneading, and reduce the amount of resin material remaining. Accordingly, the pair of left and right winding rollers are gradually brought closer to the center of the front peripheral surface of the front roll, and the resin material wound around the front roll is moved between the pair of left and right winding rollers from the upstream side of the winding roller. An automatic kneading method using a roll kneader, wherein the width is cut out to a width smaller than the interval between a pair of left and right winding rollers. 2. The resin material wound around the front roll is cut by a pair of left and right disc-shaped cutters at a portion upstream of the pair of left and right winding rollers, and is cut into the front roller at a portion downstream of the cutter. 2. The automatic kneading method using a roll kneader according to claim 1, wherein the roller is kneaded by a claw pressed against the front roller at a portion downstream of the take-out roller on the take-out roller which is opposed to and rotates in the opposite direction to the front roller.