JPH07214546A - Apparatus for cutting up band member from roll type kneader - Google Patents

Abstract

PURPOSE:To provide an apparatus for cutting up an initial end of a band member certainly safely from a roll type kneader. CONSTITUTION:A rubber sheet 15 on a kneading roll 12 is cut in a U-shape with longitudinal and horizontal cutters to cut out an initial end part of a band member 31. Besides, the initial end bites into with a projection body 37 of a stripping off roll 35. When the stripping off roll 35 is revolved in the reverse direction to that of the kneading roll 12, the initial end is peeled off in a direction wherein it goes apart from the kneading roll 12. At the same time the initial end is forcedly guided in a stripping off direction with a revolving guide roll wherein the upper projection body 37 is formed on its outer periphery.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a device for cutting up a belt-shaped member from a roll-type kneader.

[0002]

2. Description of the Related Art Conventionally, as a device for cutting up a belt-shaped member from a roll such as a calender roll device, for example, Japanese Patent Publication No.
The thing as described in 3-31188 publication is known. This is formed by a pair of cutters installed in the vicinity of the outer circumference of the roll around which the winding sheet is wound, and capable of cutting the winding sheet on the roll in the circumferential direction with a predetermined width, and cutting by the cutter. Peeling blade for peeling and removing the winding sheet axially outside the cut line,
By cutting the remaining wound sheet in the axial direction of the roll at a predetermined position, a cutting blade that cuts out the starting end of the plate-shaped sheet, and is installed in the vicinity of the cutting blade, and sucks the starting end of the plate-shaped sheet to roll. And a suction pad that is transferred to a conveyor after being peeled off.

[0003]

However, in such a rounding-up device, the suction pad is used to suck the starting end of the plate-like sheet and pull it off from the roll. Since the adsorption force is relatively weak, the peeling may fail, resulting in a lack of certainty.

Therefore, the present applicant provides the following technique in Japanese Patent Application No. 4-350638 in order to solve the above-mentioned problems. A part of the bank rubber is molded into a rubber sheet by passing it between a pair of kneading rolls, and the rubber sheet is returned to the bank rubber again in a state of being in close contact with the outer periphery of one kneading roll to knead the rubber. In the kneading machine to be performed, installed in the vicinity of the outer periphery of one kneading roll, a pair of vertical cutters capable of cutting the rubber sheet on the one kneading roll in the circumferential direction at a predetermined width, A horizontal cutter that is installed in front of the vertical cutter in the rotational direction and cuts the rubber sheet between the cuts formed by cutting in the approximately axial direction of the kneading roll to cut the starting end of the belt-shaped member from the rubber sheet, and the vicinity of the horizontal cutter. Installed on the outer periphery of the kneading roll, the needle-shaped body can be rotated about an axis parallel to the axis of the kneading roll, and the needle-shaped body is a belt-shaped member. By rotating in a state of piercing the starting end portion, the stripping roll for peeling the starting end portion of the strip-shaped member from one kneading roll, of the strip-shaped member from the roll-type kneading machine, characterized in that Round up device.

However, even in this technique, since the peeling roll provided with a large number of needle-shaped bodies on the outer periphery is located at one place, the starting end portion of the rubber sheet in the state of being brought into close contact with the outer periphery of the kneading roll is mixed. There was a problem in reliability because it could not be peeled off from the surface of the kneading roll. Further, a large number of needle-shaped bodies provided on the outer periphery of the peeling roll, piercing the starting end of the strip-shaped member to rotate the peeling roll, when peeling the starting end of the rubber sheet from the surface of the kneading roll,
The needle-like body may be broken and remain in the rubber sheet, which may cause foreign matter to enter. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above problems and provide a device for reliably and safely cutting up the starting end of a belt-shaped member from a roll-type kneader.

[0006]

In order to solve such a problem, a part of the bank rubber is molded into a rubber sheet by passing it between a pair of kneading rolls, and the rubber sheet is mixed with one of the kneading rolls. In a kneading machine that returns to the bank rubber again in a state of being in close contact with the outer circumference of the kneading roll and kneads the rubber, it is installed near the outer circumference of one kneading roll and the rubber on the one kneading roll A pair of vertical cutters that can cut the sheet in the circumferential direction with a predetermined width, and is installed in front of the vertical cutter in the rotation direction,
A horizontal cutter that cuts the rubber sheet between the cuts formed by cutting and cuts the starting end of the belt-shaped member from the rubber sheet by cutting in the approximately axial direction of the kneading roll, and a large number of protrusions installed on the outer periphery of the horizontal cutter. Is provided, it is possible to rotate about an axis parallel to the axis of the kneading roll, and by rotating in a state in which the projection bites into the starting end of the band-shaped member, the starting end of the band-shaped member is A peeling roll for peeling from one kneading roll, and a device for raising a strip-shaped member from a roll-type kneading machine, which comprises a kneading roll integrally with the horizontal cutter above the peeling roll. This can be achieved by providing a guide roll provided with a large number of protrusions on the outer circumference, which can rotate in the opposite direction to the peeling roll around an axis parallel to the axis. Can.

[0007]

Now, by rotating the pair of kneading rolls in opposite directions, a part of the bank rubber is passed between the kneading rolls to be molded into a rubber sheet, and the rubber sheet is mixed with one of the kneading rolls. It is assumed that the rubber is kneaded by returning to the bank rubber again by moving in close contact with the outer periphery of the rubber. In this state, when cutting up the belt-shaped member with a predetermined width from the rubber sheet, first, the rubber sheet is cut with a predetermined width in the circumferential direction by a pair of vertical cutters. Next, the rubber sheet cut by the vertical cutter and having the cuts formed therein is cut substantially axially between the cuts by a horizontal cutter that is installed in front of the vertical cutter in the rotational direction. As a result, a U-shaped cut is formed on the rubber sheet, and the starting end portion of the belt-shaped member is cut out.
Then, a part of the protrusions provided on the outer periphery of the peeling roll bites into the starting end portion of the strip-shaped member, but since the peeling roll rotates about an axis parallel to the axis of the kneading roll, The starting end portion of the strip-shaped member is separated from the outer periphery of the kneading roll while being restrained by these protrusions, and is peeled off from the kneading roll.

Further, the starting end portion of the strip-shaped member peeled off from the kneading roll by the peeling roll is provided above the peeling roll, and a large number of projections are provided on the outer periphery which rotates in the opposite direction to the peeling roll. The guide roll is guided by the guide roll and passes through the lower surface of the guide roll. Therefore, the starting end portion of the strip-shaped member peeled off from the kneading roll is peeled off from the kneading roll by receiving the biting force of a large number of protrusions from both the lower peeling roll and the upper guide roll. The force to be applied is increased, and it becomes possible to reliably lift up the strip-shaped member from the kneading roll. Further, by providing a large number of projections on the outer circumferences of the peeling roll and the guide roll, the peeling force is secured without damaging the peeling force by cutting into the strip-shaped member, and the outer circumferences of the peeling roll and the guide roll. When a large number of needle-shaped bodies are provided in the above, the needle-shaped bodies are broken and enter the belt-shaped member, which eliminates the risk of foreign matter entering.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1, 2, 3, and 5, reference numeral 11 is a roll-type kneading machine, and this roll-type kneading machine 11 has a pair of horizontal kneading rolls 12 and 13, and these kneading rolls 12 and 13 are provided. Are rotated by motors (not shown) in opposite directions, in which the outer circumferences close to each other are directed downward. Also, these kneading rolls 12, 13
A bank rubber 14 is provided between the bank rubber 14
A part of the rubber is passed between the kneading rolls 12 and 13 by the rotation of the kneading rolls 12 and 13 to be molded into a rubber sheet 15 having a constant width. The rubber sheet 15 molded in this manner moves in the circumferential direction with the rotation of the kneading roll 12 in a state of being in close contact with either one of the kneading rolls, here the kneading roll 12, It is returned to the bank rubber 14 again. As a result, the rubber in the bank rubber 14 is kneaded.

A rotary shaft 18 parallel to the kneading roll 12 is installed just before the kneading roll 12 and below the kneading roll 12, and a pair of vertical cutters 19 axially separated from each other are provided on the rotary shaft 18. It is mounted so that its axial position can be changed.
Further, the tip of a piston rod 22 of a cylinder 21 is connected to the tip of a lever 20 whose base end is fixed to the rotating shaft 18. Then, when the piston rod 22 of the cylinder 21 projects and the vertical cutters 19 rotate about the rotation shaft 18, the tips of these vertical cutters 19 approach the outer circumference of the kneading roll 12 and come into contact therewith. At this time, since the rubber sheet 15 is in close contact with the outer periphery of the kneading roll 12 as described above, the tips of the vertical cutters 19 penetrate the rubber sheet 15 and cut the rubber sheet 15, respectively. , At this time, kneading roll 12
Since it is rotating as described above, this rubber sheet 15
Is circumferentially cut by the pair of vertical cutters 19 with a predetermined width (the same as the distance between the vertical cutters 19) to form a pair of cuts 23.

The kneading roll 1 from the vertical cutter 19
2 in the direction of rotation, here above the vertical cutter 19 and just before the kneading roll 12, the cutting edge portion 2 of the horizontal cutter 26.
7 is parallel to the axis of the kneading roll 12, and the kneading roll 12
Of the surface of the kneading roll 12 in the tangential direction from the top to the bottom (that is, in the opposite rotation direction of the kneading roll 12). A base end of the cutting edge portion 27 is fixed to a rotatable support shaft 28, and the support shaft 28 is rotatably attached to a bracket 1 by a bearing 2, and the bracket 1 further includes a cylinder 29.
Of the piston rod 30 and the piston rod 30
It is fixed to one end of two guide rods 3 which are movable in parallel with. The cylinder 29 is attached to the fixed frame 4.

One end of an arm 5 is fixed to one end of the support shaft 28, and the tip of a piston rod 6 of a cylinder 7 is rotatably connected to the other end of the arm 5. The cylinder 7 is fixed to a seat plate 8 which is integrated with the bracket 1. Reference numeral 40 denotes a guide roll, which has a shaft 41 rotatably supported by a bearing 43 fixed to the cutting edge portion 27 and a protrusion ring (eg, a sprocket wheel) provided with a protrusion 50 (FIG. 5) on the outer periphery. 42
It consists of Further, a sprocket wheel 44 is fixed to one end of the shaft 41. Further, reference numeral 39
(FIG. 5) is a guide plate provided between the cutting edge portion 27 and the guide roll 40 so that the starting end portion of the belt-shaped member 31 does not enter. And as a whole, the cylinder 7, the piston rods 6, 30, the two guide rods 3, the bracket 1, the seat plate 8, the support shaft 28, the arm 5, the cutting edge portion 27, the guide plate 3
9 and the guide roll 40 constitute the horizontal cutter 26. Therefore, as described above, since the cylinder 29 is attached to the fixed frame 4, the cylinder 29
When the piston rod 30 moves in and out by the operation of, the horizontal cutter 26 moves up and down to come into contact with and separate from the surface of the kneading roll 12. Then, here, when the horizontal cutter 26 is located at the bottom by the operation of the cylinder 29, the tip of the cutting blade of the cutting blade portion 27 is the kneading roll 1.
I try to touch the surface of 2. Therefore, when the cylinder 7 is operated and the piston rod 6 is retracted in this state, the cutting blade portion 27 and the guide roll 40 move around the supporting shaft 28 as a fulcrum as shown by an arrow A to knead the band-shaped member 31. It can be peeled off from the surface of the roll 12 and easily transferred to the conveyor 60.

1, 2, 3 and 5, below the horizontal cutter 26 and above the vertical cutter 19, in a direction opposite to the kneading roll 12 about an axis parallel to the axis of the kneading roll 12. A rotating peeling roll 35 is installed. The peeling roll 35 has a protrusion 37 on the outer periphery.
Protrusion ring 3 such as a sprocket wheel provided with
6 and pulleys 34 are alternately fixedly arranged on the shaft 33. This shaft 33 is a conveyor 6
It is rotatably attached to the frame 52 of 0, and the gear 63 is fixed to one end of the shaft 33. The projection 37 extends in the radial direction as shown in FIG. 3 and becomes thinner toward the outer side in the radial direction, but not as thin as a needle or a nail, and the tip thereof is not sharp. It has the same shape as the tooth. Reference numeral 54 is a pulley, which is a shaft 53 parallel to the peeling roll 35.
Is fixed at the same position facing the pulley 34,
Further, the shaft 53 is rotatably supported on the frame 52 by bearings 38. A plurality of narrow endless belts 55, ten in this embodiment, are laid in parallel on these pulleys 54 and 34, and a conveyor belt 60 for carrying the belt-shaped member 31 rounded up by a pair of vertical cutters 19 is substantially horizontal. is doing.

A plate 68 is fixed to the outside of the lower portion of the frame 52 of the conveyer 60 in a direction perpendicular to the frame 52, and the piston rod 6 of the cylinder 61 is fixed to the plate 68.
The tip of 2 is fixed. And the cylinder 61
Is attached to a fixed frame 69, cylinder 61
By the operation of the
Move closer to or further from 2. Then, when the piston rod 62 comes out the longest, the projection 37 on the outer periphery of the peeling roll 35 of the transport conveyor 60 bites into the rubber sheet 15. Therefore, at this time, when the kneading roll 12 is rotating, the peeling roll 35 is given a reverse rotational force from the kneading roll 12.

Reference numeral 64 denotes a gear which meshes with the gear 63, which is fixed to a shaft 65, and the shaft 65 is rotatably supported by a bearing 66 fixed to the frame 52. And axis 6
A sprocket wheel 49 is fixed slightly inside the end of the shaft 65 in order to finally transmit the rotation of 5 to the shaft 41 of the guide roll 40. As previously mentioned,
A shaft 41 of the guide roll 40 is vertically movable, and a shaft 65 supported by a bearing 66 on a frame 52 of the conveyor 60 is horizontally movable. Therefore, the shaft 41
The position of the shaft 65 also changes relatively. In FIGS. 1 and 2, reference numeral 59 is an intermediate shaft provided for transmitting rotation to the shaft 41 and the shaft 65 whose positions relatively change in this way, and the link 48.
Are rotatably supported by bearings (not shown) provided at one end of the link 45 and one end of the link 45. Link 4
The other end of 8 is rotatably supported by the shaft 65 by a bearing (not shown), and the other end of the link 45 is rotatably supported by the shaft 41 by a bearing (not shown). The sprocket wheel 49
Rotation is transmitted to the sprocket wheel 47 fixed to the intermediate shaft 59 via the roller chain 57, and further this rotation is transmitted from the sprocket wheel 46 fixed to the intermediate shaft 59 to the roller chain 58. It is transmitted to 44. As described above, the rotation of the peeling roll 35 is transmitted in the reverse rotation to the guide roll 40.

Next, the operation of the embodiment of the present invention will be described. Now, when the pair of kneading rolls 12 and 13 rotate in opposite directions, a part of the bank rubber 14 passes between the kneading rolls 12 and 13 to be molded into the rubber sheet 15, and the rubber sheet 15 Kneading roll 12
It is assumed that the rubber is kneaded by returning to the bank rubber 14 again by moving in the circumferential direction while being in close contact with the outer periphery of the rubber. In this state, when cutting up the belt-shaped member 31 having a predetermined width W from the rubber sheet 15, the piston rod 22 of the cylinder 21 is projected, and the tips of the pair of vertical cutters 19 are brought into contact with the outer periphery of the kneading roll 12. Rotate to. At this time, since the rubber sheet 15 is in close contact with the outer periphery of the kneading roll 12, the tips of the vertical cutters 19 penetrate the rubber sheet 15 and cut the rubber sheet 15, respectively. Moreover, at this time, since the kneading roll 12 is rotating as described above, the rubber sheet 15 is circumferentially cut by the pair of vertical cutters 19 with a predetermined width W to form a pair of cuts 23. To be done.

When such a cut 23 passes immediately after the peeling roll 35 by the rotation of the kneading roll 12, the cylinder 61 is operated to peel off the peeling roll 35.
Is moved so as to approach the kneading roll 12. As a result, the tip of the protrusion 37 of the peeling roll 35 bites into the rubber sheet 15 between the cuts 23. In this state, the peeling roll 35 rotates in the opposite direction to the kneading roll 12, so that the rubber sheet 15 between the cuts 23 located immediately before the rotation direction of the peeling roll 35 is mixed by the protrusions 37 of the peeling roll 35. It is separated from the outer periphery of the kneading roll 12 and floats up as shown by a virtual line in FIG.

At this time, the cylinder 29 is operated to bring the cutting edge portion 27 of the horizontal cutter 26 close to the kneading roll 12. As a result, the cutting edge portion 27 of the horizontal cutter 26 cuts the rubber sheet 15 lifted between the cuts 23 in the substantially axial direction of the kneading roll 12. As a result, a U-shaped cut is formed in the rubber sheet 15, and the strip-shaped member 31
The beginning part of is cut out. Here, since the projection 37 of the peeling roll 35 is embedded in the starting end portion of the cut-out belt-shaped member 31 as described above, when the peeling roll 35 further rotates, the starting end portion of the belt-shaped member 31 is rotated. The kneading roll 12 remains constrained by these protrusions 37.
The strip | belt-shaped member 31 cut away while being peeled away from is about 90 at an angle. It is bent in a direction away from the kneading roll 12 and is carried on the belt 55 of the conveyor 60.

However, in the case of rubber having a high rigidity, the bending resistance is strong, so that the angle is about 90. It is hard to break and may escape upward. At this time, the protrusions 5 are formed on the surface at the top.
A guide roll 40 having a width of 0 is provided, and the strip-shaped member 3 cut out is rotated in the opposite direction to the peeling roll 35.
Since the projecting body 50 bites the starting end portion of 1 into the strip-shaped member 31 from above, the strip-shaped member 31 is forcibly guided in the pull-out direction, so that the pull-out force becomes strong. At this time, the guide plate 39 prevents the starting end portion of the belt-shaped member 31 from entering between the cutting edge portion 27 and the guide roll 40. As a result, the belt-shaped member 31 can be reliably cut up even if the rubber is highly rigid.

As another example, in the case of a rubber having high adhesion, there is a case where the starting end of the belt-shaped member 31 remains in close contact with the surface of the kneading roll 12 and cannot be peeled off by the peeling roll 35. At this time, when the cylinder 7 is operated to retract the piston rod 6, the cutting edge portion 27
The guide roll 40 moves in the direction of arrow A, and the starting end portion of the belt-shaped member 31 can be peeled off from the surface of the kneading roll 12 and easily transferred to the transport conveyor 60.
As a result, it is possible to surely cut up the belt-shaped member 31 even with rubber having high adhesion.

[0021]

As described above, according to the present invention, the starting end portion of the belt-shaped member can be reliably cut up from the kneading roll and peeled off. Also, since the protrusions formed on the outer periphery of the peeling roll and the guide roll are not thin and long like needle-like members, there is no concern that foreign matter may enter the strip-shaped member due to the tip of the protrusion being broken. .

[Brief description of drawings]

FIG. 1 is an overall schematic side view showing an embodiment of the present invention.

FIG. 2 is a view taken along the line BB of FIG.

FIG. 3 is a view taken along the line CC of FIG.

FIG. 4 is a side sectional view in the vicinity of a peeling roll.

FIG. 5 is a side sectional view of the vicinity of a guide roll.

[Explanation of symbols]

11: Kneading machine 12, 13: Kneading roll 14: Bank rubber 15: Rubber sheet 19: Vertical cutter 23: Cut 26: Horizontal cutter 31: Band member 34: Pulley 35: Peeling roll 36: Projection ring 37: Projection body 39: Guide plate 40: Guide roll 42: Projection ring 50: Projection body 54: Pulley 55: Belt 60: Conveyor W: Predetermined width A: Arrow

Claims (1)

[Claims] 1. A part of a bank rubber is molded into a rubber sheet by passing it between a pair of kneading rolls, and the rubber sheet is returned to the bank rubber again in a state of being in close contact with the outer periphery of one kneading roll, In a kneading machine adapted to knead rubber, a pair which is installed in the vicinity of the outer circumference of one kneading roll and which can cut a rubber sheet on the one kneading roll in a circumferential direction with a predetermined width It is installed in the vertical cutter of, and in front of the vertical cutter in the rotation direction,
A horizontal cutter that cuts the rubber sheet between the cuts formed by cutting and cuts the starting end of the belt-shaped member from the rubber sheet by cutting in the approximately axial direction of the kneading roll, and a large number of protrusions installed on the outer periphery of the horizontal cutter. Is provided, it is possible to rotate about an axis parallel to the axis of the kneading roll, and by rotating in a state in which the projection bites into the starting end of the band-shaped member, the starting end of the band-shaped member is A peeling roll for peeling from one kneading roll, and a device for raising a strip-shaped member from a roll-type kneading machine, which comprises a kneading roll integrally with the horizontal cutter above the peeling roll. A guide roll provided with a large number of protrusions on the outer circumference, which can rotate in the opposite direction to the peeling roll around an axis parallel to the axis. It rounded up device of the belt-shaped member from the Le-type kneader.