JP6809026B2 - Cutting method and equipment for corded rubber sheet members - Google Patents

Description

The present invention relates to a cutting method and an apparatus for a rubber sheet member containing a cord, and more particularly to a cutting method and an apparatus used for forming a strip-shaped rubber sheet member containing a cord in an annular shape on a forming drum.

A band-shaped rubber sheet member containing a cord in which a plurality of cords such as a steel cord and a resin cord are embedded in parallel at a predetermined pitch is widely used as a constituent member of a rubber product such as a tire. In the manufacture of tires, corded rubber sheet members such as belt materials and carcass materials are used. The corded rubber sheet member is cut to a predetermined length and molded into an annular member, for example, on a molding drum.

When forming an annular member using this rubber sheet member, for example, a rubber sheet member containing a strip-shaped cord is conveyed by a conveyor, and a blade receiving roll installed adjacent to the conveyor at a predetermined position on a conveying path is used. The rubber sheet member is sandwiched between the cutting blade and the rubber sheet member in the thickness direction. In this state, the rubber sheet member is cut to a predetermined length on the blade receiving roll by moving the cutting blade between the cords by operating the conveyor (FIGS. 1, 2, etc. of Patent Document 1). reference). The corded rubber sheet member cut to a predetermined length is wound around a molding drum, and the front end portion and the rear end portion thereof are joined to form an annular member.

By the way, when a rubber sheet member containing a cord is cut from the width direction end with a cutting blade, the cutting blade may come into contact with the cord embedded in the width direction end and the cord may pop out from the rubber sheet member. In order to prevent such cords from popping out, there is known a method of first making a notch in the rubber between the cords at a position inside the widthwise end of the rubber sheet member (see Patent Document 2). In this method, after making a cut in the rubber sheet member on the belt conveyor, the rubber sheet member is conveyed to one side in the longitudinal direction by the belt conveyor, so that the cutting blade is moved along the cord at one end in the width direction of the rubber sheet member. Move towards. After that, the rubber sheet member is conveyed to the other side in the longitudinal direction by the belt conveyor, so that the cutting blade is moved along the cord toward the other end in the width direction of the rubber sheet member. That is, when cutting the rubber sheet member, it is necessary to move the rubber sheet member to both sides in the longitudinal direction by a belt conveyor.

Therefore, when cutting a part of the rubber sheet member while it is wound around the molding drum, a process such as rotating the molding drum in the reverse direction and peeling the wound portion of the rubber sheet member from the outer peripheral surface of the drum is performed. You will need it. The extra process of moving the rubber sheet member in this way tends to cause misalignment or deformation of the rubber sheet member, which causes quality deterioration. Therefore, even when a part of the rubber sheet member is cut while being wound around the forming drum, there is room for improvement in forming an annular member of a certain quality.

Japanese Unexamined Patent Publication No. 2013-163246 Japanese Patent No. 41628887

An object of the present invention is to cut a strip-shaped rubber sheet member containing a cord in which a plurality of cords are embedded in parallel with an accurate length while preventing the cords from popping out, and to stabilize the quality on a molding drum. It is an object of the present invention to provide a method and an apparatus for cutting a rubber sheet member containing a cord capable of forming the annular member.

In order to achieve the above object, the method for cutting the corded rubber sheet member of the present invention is a transport path for transporting the corded rubber sheet member in which a plurality of cords are embedded in unvulvered rubber in parallel to a molding drum. A rubber sheet containing a cord for cutting by moving the cutting blade between the cords of the rubber sheet member along the cord while being sandwiched in the thickness direction by the blade receiving portion and the cutting blade arranged in A method of cutting a member, in which the tip end portion of the rubber sheet member is wound around the molding drum and the cutting blade is opposed to the blade receiving portion arranged at a predetermined position to make the width of the rubber sheet member. The rubber sheet is arranged inside one end in the direction, and the rubber sheet member is sandwiched between the cords in the thickness direction by the cutting blade and the blade receiving portion, and the rubber sheet is stopped in the transport path. The blade receiving portion is rolled with respect to one surface of the member to move from the predetermined position to the forward position in front of the transport path, and the cutting blade is moved between the cords from the predetermined position along the cord. By moving to the forward position, a cut is formed that opens from the inside in the width direction to one end in the width direction of the rubber sheet member, and then the rubber sheet member is conveyed toward the molding drum and in front of the transfer path. By doing so, the cutting blade is moved to the other end in the width direction of the rubber sheet member along the cord between the cords forming the cut, and the molding drum is rotationally driven to wind the rubber sheet member. The rubber sheet member is cut to a predetermined length.

The cord-containing rubber sheet member cutting device of the present invention has a cutting blade for cutting a cord-containing rubber sheet member in which a plurality of cords are embedded in unsulfided rubber in parallel, and the rubber sheet member on which the cord is placed. A transport mechanism for transporting the rubber sheet member to the molding drum, a blade receiving portion arranged adjacent to the transport mechanism in the transport path of the rubber sheet member to the molding drum, the transport mechanism, the blade receiving portion, and the said. A control unit for controlling the operation of the cutting blade is provided, and the rubber sheet member is sandwiched between the cutting blade and the blade receiving portion in the thickness direction, and the cord is sandwiched between the cords of the rubber sheet member. It is a cutting device for a rubber sheet member containing a cord that is configured to cut along the above, and the blade receiving portion is configured to be movable in the front-rear direction of the transport path by rolling on one surface of the rubber sheet member. With the tip of the rubber sheet member wound around the molding drum, the cutting blade is placed inside the rubber sheet member in the width direction so as to face the blade receiving portion arranged at a predetermined position. Arranged so that the rubber sheet member is sandwiched between the cords in the thickness direction by the cutting blade and the blade receiving portion with respect to one surface of the rubber sheet member stopped in the transport path. The blade receiving portion is rolled to move from the predetermined position to the forward forward position of the transport path, and the cutting blade is moved between the cords from the predetermined position to the advance position along the cord. As a result, a cut that opens from the inside in the width direction to one end in the width direction of the rubber sheet member is set to be formed, and then the rubber sheet member is conveyed by the transport mechanism in synchronization with the rotation drive of the molding drum. By transporting the rubber sheet member to the molding drum in front of the transport path, the rubber sheet member is wound around the molding drum, and the cutting blade is placed along the cord between the cords in which the cut is formed. It is characterized in that the rubber sheet member is set to be cut to a predetermined length by moving the member to the other end in the width direction .

According to the present invention, by moving the blade receiving portion sandwiching the rubber sheet member together with the cutting blade in the thickness direction from a predetermined position of the transport path to a forward forward position, the rubber sheet member is moved from the inside in the width direction to the width direction. A cut that opens at one end can be formed between the cords. After that, the rubber sheet member is transported to the front of the transport path and the cutting blade is moved to the other end in the width direction of the rubber sheet member on the blade receiving portion, so that the formed cut is continuous and the rubber sheet member has a predetermined length. Can be cut into. Therefore, the rubber sheet member is surely cut between the cords, and it is possible to prevent the cord from popping out from the rubber sheet member.

Since the cut is formed in a state where the rubber sheet member is stopped in the transport path, there is no extra step of moving the rubber sheet member. Therefore, the rubber sheet member is less likely to be displaced or deformed. Therefore, even when a part of the rubber sheet member is cut while being wound around the forming drum, it is possible to accurately cut the rubber sheet member to a predetermined length and form an annular member having stable quality on the forming drum. It will be advantageous.

It is explanatory drawing which illustrates the cutting apparatus of this invention which carries a rubber sheet member to a forming drum in a plan view. It is explanatory drawing which illustrates the periphery of the cutting blade and the blade receiving part of FIG. 1 in a plan view. It is explanatory drawing which illustrates the periphery of the cutting blade and the blade receiving part of FIG. 1 in a front view. It is explanatory drawing which illustrates the process of starting to form a cut at one end in the width direction of a rubber sheet member in a plan view. It is explanatory drawing which illustrates the process of forming a cut at one end in the width direction of a rubber sheet member in a plan view. It is explanatory drawing which illustrates the process of cutting a rubber sheet member by a predetermined length in a plan view. It is explanatory drawing which illustrates the process of returning a blade receiving part to a predetermined position in a plan view. It is explanatory drawing which illustrates the process of returning a cutting blade to a standby position, and then positioning the tip of the rubber sheet member to be cut in a plan view.

Hereinafter, the method and apparatus for cutting the corded rubber member of the present invention will be described based on the embodiment shown in the figure.

The cord-containing rubber member cutting device 1 (hereinafter referred to as the cutting device 1) of the present invention exemplified in FIGS. 1 to 3 is used when the strip-shaped cord-containing rubber sheet member S is annularly molded on the molding drum 15. .. The rubber sheet member S is a member in which a plurality of cords C are embedded in unvulcanized rubber in parallel at a predetermined pitch. In the figure, the code C is omitted or partially omitted.
The cord C is a steel cord or the like, and is composed of, for example, a plurality of strands twisted together. The cord C is embedded at a predetermined inclination angle with respect to the longitudinal direction of the rubber sheet member S. This tilt angle is a conventional general angle.

The cutting device 1 has a conveying mechanism 2 on which the rubber sheet member S is placed and conveyed to the forming drum 15, a blade receiving portion 6 arranged adjacent to the conveying mechanism 2, and a cutting blade for cutting the rubber sheet member S. It is equipped with 9. The operations of the transport mechanism 2, the blade receiving unit 6, and the cutting blade 9 are controlled by the control unit 14.

The transport mechanism 2 of this embodiment includes a feed roller 3, a presser roller 4, and a support roller 5. The feed roller 3 is a roller that is rotationally driven, and the presser roller 4 and the support roller 5 are rollers that rotate freely (driven rotation). At least one of the opposing feed roller 3 and the pressing roller 4 is movable in a direction in which the distance between them is increased or decreased.

The rubber sheet members S mounted on a large number of support rollers 5 are sandwiched between the feed rollers 3 and the presser rollers 4 by reducing the facing distance between them. The rubber sheet member S sandwiched between the feed roller 3 and the presser roller 4 in the thickness direction is conveyed by rotationally driving the feed roller 3.

In the transport path W in which the rubber sheet member S is transported to the molding drum 15 by the transport mechanism 2, the direction close to the molding drum 15 is the front of the transport path W, and the direction away from it is the rear of the transport path W. The transport mechanism 2 is not limited to the configuration illustrated in this embodiment, and other mechanisms such as a belt conveyor capable of transporting the rubber sheet member S to the forming drum 15 can be adopted.

The blade receiving portion 6 is arranged in the transport path W. In this embodiment, the blade receiving portion 6 is arranged across the transport path W at a position in the middle of the transport path W. As the blade receiving portion 6, for example, a roller pivotally supported by the support shaft 7 is used. The blade receiving portion 6 is a type that is driven to rotate. In this embodiment, a roller of a type that can be switched to free rotation is adopted as the blade receiving portion 6.

The blade receiving portion 6 can be moved in the front-rear direction of the transport path W by the forward / backward moving mechanism 8. As the forward / backward movement mechanism 8, for example, a cylinder mechanism for moving the rod connected to the blade receiving portion 6 back and forth is used.

For the cutting blade 9, for example, a round blade that is pivotally supported by a central axis and rotates freely is used. The outer peripheral edges of the cutting blade 9 on both sides in the axial direction are inclined surfaces, and the central portion of the outer peripheral surface in the axial direction protrudes toward the outer peripheral side. The cutting direction (direction of the cutting edge) by the cutting blade 9 can be set in any direction. Note that FIG. 3 shows a state in which the cutting edge 9 is oriented in the front-rear direction of the transport path W in order to make it easier to understand the shape of the cutting blade 9.

The cutting blade 9 can be moved close to and away from the blade receiving portion 6 by the vertical movement mechanism 11. As the vertical movement mechanism 11, for example, a cylinder mechanism for moving the rod connected to the frame holding the central axis of the cutting blade 9 up and down is used.

The cutting blade 9 is attached to a guide frame 10 installed across the transport path W together with the vertical movement mechanism 11. The cutting blade 9 and the vertical movement mechanism 11 can move freely along the guide frame 10 in the direction across the transport path W. By operating the position return mechanism 12, the cutting blade 9 and the vertical movement mechanism 11 can be moved to an arbitrary position in the direction across the transport path W along the guide frame 10. The position return mechanism 12 is composed of, for example, an annular belt body connected to the vertical movement mechanism 11 and a drive motor for rotating the belt body that is hung around.

An advancer 13a that can move in the front-rear direction is provided at the front end of the transport path W. Further, a positioning sensor 13b is provided at a position in front of the blade receiving portion 6 of the transport path W.

Hereinafter, a procedure for cutting the rubber sheet member S to a predetermined length and forming the annular member S1 by using the cutting device 1 will be described.

As illustrated in FIG. 1, the rubber sheet member S is placed on the support roller 5 of the transport path W. The presser roller 4 is moved downward so that the rubber sheet member S is sandwiched between the roller 3 and the roller 3 in the thickness direction, and the feed roller 3 is rotationally driven (forward rotation). The blade receiving portion 6 is also rotationally driven (forward rotation) in synchronization with the same transfer speed as that of the feed roller 3. As a result, the rubber sheet member S is conveyed toward the forming drum 15. At this time, the blade receiving portion 6 may be freely rotated. The rod of the forward / backward moving mechanism 8 is retracted, and the blade receiving portion 6 is at a predetermined position P1. The cutting blade 9 is located at one end in the width direction of the transport path W at an upper position that does not contact the rubber sheet member S.

The tip of the rubber sheet member S transported in front of the transport path W is placed on the advancer 13a that moves forward and moved to a position above the forming drum 15. Next, the advancer 13a is moved rearward to hold the tip of the rubber sheet member S on the outer peripheral surface of the molding drum 15. The presser roller 4 is moved upward to a position away from the rubber sheet member S, and the rotary drive of the feed roller 3 and the blade receiving portion 6 is stopped to allow free rotation.

In this state, the forming drum 15 is rotationally driven (forward rotation) to wind the tip of the rubber sheet member S. After winding a certain length of the rubber sheet member S, the rotational drive of the forming drum 15 is stopped. Next, as illustrated in FIG. 4, the cutting blade 9 is moved to a position inside the one end in the width direction of the rubber sheet member S. The cutting blade 9 is moved downward at the moved position so that the rubber sheet member S is sandwiched between the cords C in the thickness direction by the cutting blade 9 and the blade receiving portion 6. Specifically, the unvulcanized rubber between the cords C is strongly pressed by the cutting blade 9 and the blade receiving portion 6. The direction of the cutting edge of the cutting blade 9 is set to be the same as the extending direction of the cord C. The presser roller 4 is moved downward so that the rubber sheet member S is sandwiched between the feed roller 3 and the rubber sheet member S in the thickness direction.

Next, as illustrated in FIG. 5, the rod of the forward / backward moving mechanism 8 is advanced while the rubber sheet member S is stopped without being moved. At this time, the blade receiving portion 6 is rotationally driven (opposite rotation). As a result, the blade receiving portion 6 is rolled with respect to one surface (lower surface) of the rubber sheet member S stopped in the transport path W to move from the predetermined position P1 to the forward forward position P2. In the case of the type in which the blade receiving portion 6 rotates freely, the blade receiving portion 6 comes into contact with one surface of the rubber sheet member S and rolls in the opposite rotation by advancing the rod of the forward / backward moving mechanism 8.

Along with the forward movement of the blade receiving portion 6, the cutting blade 9 sandwiching the rubber sheet member S together with the blade receiving portion 6 between the cords C rolls along the cord C and moves forward from the predetermined position P1. Move to P2. When the cutting blade 9 moves to one end in the width direction of the rubber sheet member S, the rubber sheet member S is formed with a cut X that opens from the inside in the width direction to one end in the width direction.

Next, as illustrated in FIG. 6, by transporting the rubber sheet member S in front of the transport path W, the cutting blade 9 is placed along the cord C between the cords C forming the cut X, and the width of the rubber sheet member S is wide. Move to the other end of the direction. Specifically, the presser roller 4 is moved downward so that the rubber sheet member S is sandwiched between the feed roller 3 in the thickness direction, and the feed roller 3 is rotationally driven (forward rotation). The blade receiving portion 6 and the forming drum 15 are also rotationally driven (forward rotation) in synchronization with each other so that the transfer speed is the same as the transfer speed of the feed roller 3. As a result, the rubber sheet member S is conveyed toward the forming drum 15.

As the rubber sheet member S is conveyed forward, the cutting blade 9 in which the blade receiving portion 6 and the rubber sheet member S are sandwiched between the cords C of the rubber sheet member S along the cord C. Rolls to the other end in the width direction. As a result, the rubber sheet member S is cut to a predetermined length.

Next, as illustrated in FIG. 7, the rear end portion of the rubber sheet member S cut to a predetermined length is wound around a rotating molding drum 15. The cutting blade 9 is moved upward to a position where it does not come into contact with the rubber sheet member S. The rotational drive of the feed roller 3 is stopped, and the rubber sheet member S behind the cutting position is left sandwiched between the feed roller 3 and the presser roller 4 in the thickness direction.

At this time, the rod of the forward / backward moving mechanism 8 is moved backward to move the blade receiving portion 6 from the advanced position P2 to the predetermined position P1, and the blade receiving portion 6 is rotationally driven (forward rotation). As a result, the blade receiving portion 6 is rolled with respect to one surface (lower surface) of the rubber sheet member S stopped in the transport path W behind the cutting position to move the blade receiving portion 6 from the advancing position P2 to the predetermined position P1. .. In the case of the type in which the blade receiving portion 6 rotates freely, the blade receiving portion 6 comes into contact with one surface of the rubber sheet member S and rolls in a forward rotation by moving the rod of the forward / backward moving mechanism 8 backward.

The rubber sheet member S having a predetermined length wound around the forming drum 15 is formed into an annular member S1 by joining the front end and the rear end as illustrated in FIG. The rubber sheet member S located behind the cutting position is rotationally driven (forward rotation) by the feed roller 3 and the blade receiving portion 6 to convey the transport path W forward.

The position of the tip of the rubber sheet member S conveyed forward is detected by the positioning sensor 13b. When the detection signal of the positioning sensor 13b is input to the control unit 14, the rotary drive of the feed roller 3 and the blade receiving unit 6 is stopped, and then the cutting position of the rubber sheet member S to be cut to a predetermined length is positioned. .. The predetermined length to be cut is input in advance to the control unit 14 based on the outer diameter of the forming drum 15. Based on the predetermined length input in advance, the length for transporting the rubber sheet member S is determined, and the cutting position is positioned.

The cutting blade 9 operates the position return mechanism 12 to move the rubber sheet member S from the other end in the width direction to one end to stand by. When the rubber sheet member S shown in FIG. 8 in the transport path W is cut to a predetermined length, the steps illustrated by FIGS. 3 to 7 described above may be performed.

As described above, according to the present invention, the rubber is moved by moving the blade receiving portion 6 and the cutting blade 9 sandwiching the rubber sheet member S in the thickness direction from the predetermined position P1 of the transport path W to the forward position P2. A cut X that opens from the inside of the sheet member S in the width direction to one end in the width direction can be formed between the cords C. After that, by transporting the rubber sheet member S in front of the transport path W, the rubber sheet member S having a predetermined length can be obtained by continuously cutting along the cut X. Since the rubber sheet member S can be reliably cut between the cords C, it is possible to prevent the cord C from popping out of the rubber sheet member S.

Moreover, since the cut X is formed in a state where the rubber sheet member S is stopped, there is no step of moving the rubber sheet member S extra. Along with this, the rubber sheet member S is less likely to be displaced or deformed.

In particular, when a part of the rubber sheet member S is wound around the forming drum 15, when the forming drum 15 is rotated in the reverse direction to move the rubber sheet member S backward in order to make a cut X, the rubber sheet member S is slackened. The S is likely to be displaced or deformed. However, in the present invention, since the rubber sheet member S is not moved when the cut X is formed, even in this case, the rubber sheet member S can be cut with a predetermined length with high accuracy. Therefore, it is advantageous for molding the annular member S1 having stable quality on the molding drum 15.

In this embodiment, the blade receiving portion 6 has a simple structure using a roller that rolls by bringing the outer peripheral surface into contact with one surface of the rubber sheet member S. In addition, for the blade receiving portion 6, for example, a conveyor belt stretched between a pair of pulleys or the like can be adopted.

The rubber sheet member S can also be simply conveyed toward the forming drum 15 by a belt conveyor device or the like. When the rubber sheet member S is sandwiched between the feed roller 3 and the presser roller 4 in the thickness direction as in this embodiment, the rubber sheet member S is less likely to be displaced, so that the set distance is accurate. It is advantageous to move it well. Along with this, the rubber sheet member S can be cut to a predetermined length with higher accuracy.

The transport speed of the rubber sheet member S by the feed roller 3 and the winding speed (conveyance speed) by the forming drum 15 around which the rubber sheet member S is wound may be set to the same speed. As a result, it becomes more and more advantageous to accurately move the rubber sheet member S to be conveyed by a set distance while suppressing its deformation.

1 Cutting device 2 Conveying mechanism 3 Feeding roller 4 Pressing roller 5 Supporting roller 6 Blade receiving part 7 Supporting shaft 8 Forward / backward moving mechanism 9 Cutting blade 10 Guide frame 11 Vertical movement mechanism 12 Positioning mechanism 13a Advancer 13b Positioning sensor 14 Control part 15 Molding Drum C Code S Rubber sheet member S1 Circular member W Transport path X Cut

Claims (4)

A state in which a rubber sheet member containing a cord in which a plurality of cords are embedded in unvulcanized rubber in parallel is sandwiched in the thickness direction by a blade receiving portion and a cutting blade arranged in a transport path for transporting to a molding drum. A method for cutting a rubber sheet member containing a cord, which cuts the cutting blade by moving the cutting blade between the cords of the rubber sheet member along the cord.
With the tip of the rubber sheet member wound around the molding drum, the cutting blade is placed inside the one end in the width direction of the rubber sheet member so as to face the blade receiving portion arranged at a predetermined position. Then, the rubber sheet member is sandwiched between the cords in the thickness direction by the cutting blade and the blade receiving portion, and the rubber sheet member is stopped on one surface of the transport path. By rolling the blade receiving portion to move it from the predetermined position to the forward forward position of the transport path, and moving the cutting blade between the cords from the predetermined position to the advance position along the cord. , A cut that opens from the inside in the width direction to one end in the width direction of the rubber sheet member is formed.
Next, by transporting the rubber sheet member toward the molding drum in front of the transport path, the cutting blade is placed along the cord between the cords forming the cut, and the other in the width direction of the rubber sheet member. A method for cutting a rubber sheet member containing a cord, which comprises moving the molded drum to an end and rotationally driving the molding drum to wind the rubber sheet member while cutting the rubber sheet member to a predetermined length. The method for cutting a rubber sheet member containing a cord according to claim 1, wherein a roller that rolls by bringing an outer peripheral surface into contact with one surface of the rubber sheet member is used as the blade receiving portion. Rotatingly driving the feed roller with the rubber sheet member sandwiched in the thickness direction by the feed roller and the presser roller arranged behind the blade receiving portion and the cutting blade in the transport path. The method for cutting a rubber sheet member with a cord according to claim 1 or 2 , wherein the rubber sheet member is conveyed in front of the transfer path. A cutting blade that cuts a rubber sheet member containing a cord in which a plurality of cords are embedded in unvulcanized rubber in parallel, and a transfer mechanism that conveys the placed rubber sheet member to a molding drum. A blade receiving portion arranged adjacent to the conveying mechanism in the conveying path of the rubber sheet member to the forming drum, and a control portion for controlling the operation of the conveying mechanism, the blade receiving portion, and the cutting blade are provided. A cord-containing rubber sheet member having a structure in which the rubber sheet member is sandwiched between the cutting blade and the blade receiving portion in the thickness direction, and the cords of the rubber sheet member are cut along the cords. It is a cutting device of
The blade receiving portion is configured to be movable in the front-rear direction of the transport path by rolling on one surface of the rubber sheet member, and the tip portion of the rubber sheet member is wound around the molding drum at a predetermined position. The cutting blade is arranged inside the one end in the width direction of the rubber sheet member so as to face the blade receiving portion arranged in the above, and the rubber sheet member is formed by the cutting blade and the blade receiving portion. With the rubber sheet member sandwiched between the cords in the thickness direction, the blade receiving portion is rolled with respect to one surface of the rubber sheet member stopped in the transport path, and the blade receiving portion is rolled from the predetermined position to the front of the transport path. A cut that opens from the inside in the width direction to one end in the width direction of the rubber sheet member by moving the cutting blade between the cords from the predetermined position to the advance position along the cord while moving the rubber sheet member to the forward position. Is then set to be formed, and then the rubber sheet member is conveyed to the forming drum in front of the conveying path toward the forming drum by the conveying mechanism in synchronization with the rotational drive of the forming drum. While winding the rubber sheet member, the cutting blade is moved to the other end in the width direction of the rubber sheet member along the cord between the cords in which the cut is formed, and the rubber sheet member is cut to a predetermined length. A corded rubber sheet member cutting device characterized in that it is set to be used.

Images