JP4042744B2 - Prepreg winding method and prepreg winding device - Google Patents

Description

  The present invention relates to a prepreg winding method and a prepreg winding device, and more particularly to a prepreg winding method and a prepreg winding device using a biaxial winding turret.

  Conventionally, in a winding device that winds up a film or the like in a roll shape, a near roll is disposed in the vicinity of the winding roll, and the distance between the near roll and the winding roll is detected using a sensor, whereby the near roll and the winding roll are detected. There is known a technique in which the near roll is moved so that the distance from the roll becomes a preset distance (Patent Document 1).

In the above-described winding device, an ultrasonic sensor that is a reflective sensor is used as a sensor, and the ultrasonic sensor is placed above the near roll, and the sensor light is transmitted toward the winding roll surface, thereby super The distance between the sonic sensor and the take-up roll surface is measured, and the shortest distance between the near roll and the take-up roll surface is calculated from this distance.
JP-A-5-338873

  However, in the above winding device, the shortest distance between the near roll and the winding roll is not directly measured, but the shortest distance between the near roll and the winding roll is determined from the distance between the ultrasonic sensor and the winding roll surface. Therefore, for example, when the angle of the turret changes from a preset angle, an error occurs in the calculation result of the shortest distance between the near roll and the take-up roll, and the difference between the near roll and the take-up roll In some cases, the distance is shorter than a preset distance. Therefore, it becomes difficult to precisely control the distance between the near roll and the take-up roll. For example, when the set distance between the near roll and the take-up roll is shortened, the near roll may come into contact with the surface of the take-up roll. was there.

  Further, the near roll is moved so that the distance between the near roll and the take-up roll becomes a preset distance, and a complicated mechanism for this is required.

  The present invention has been made in view of the above reasons, and the object of the present invention is that the distance between the near roll and the take-up roll is greater than the predetermined distance without requiring a complicated mechanism for moving the near roll. A prepreg winding method and a prepreg winding device that can prevent the wrinkle of the prepreg by precisely controlling the distance between the near roll and the winding surface of the prepreg. There is.

  In order to solve the above-mentioned problems, in the prepreg winding method according to claim 1 of the present invention, a biaxial winding turret in which two winding rolls are arranged at both ends of a turret rotatable in the vertical direction. In addition, a near roll whose rotating shaft is substantially parallel to the take-up roll is arranged in the vicinity of the take-up surface of the prepreg taken up by the take-up roll, and the prepreg is taken up on the take-up roll through the near roll. The method is characterized in that the prepreg is wound while the distance between the winding surface and the near roll is kept constant by changing the vertical angle of the turret.

Further, in the winding method of the prepreg according to claim 1 of the present invention, substantially parallel sensor optical axis is the rotation axis of the Niaroru and transmissive sensor so as to be in a state of a predetermined distance from the outer peripheral surface of Niaroru And when the transmission sensor detects that the distance between the winding surface and the near roll is closer than the predetermined distance, the vertical angle of the turret is adjusted so that the winding surface is separated from the near roll. By changing, the prepreg is wound while keeping the distance between the winding surface and the near roll constant.

Moreover, the keep winding method of the prepreg according to claim 1 of the present invention, that the sensor light axis so as to be arranged on a circle concentric around the rotation axis of Niaroru, arranging a plurality of transmission type sensor Features.

In the prepreg winding method according to claim 2 of the present invention, the sensor optical axis is concentric with a circle centered on the rotation axis of the near roll, and is arranged so as to be arranged radially about the rotation axis of the near roll. A plurality of mold sensors are arranged.

In the prepreg winding device according to claim 3 of the present invention, a biaxial winding turret including a turret rotatable in the vertical direction and two winding rolls rotatably supported at both ends of the turret; A near roll disposed in the vicinity of the winding surface of the prepreg wound on the take-up roll, the rotation axis being substantially parallel to the take-up roll, the sensor optical axis being substantially parallel to the rotation axis of the near roll, and the outer circumference of the near roll It is characterized by comprising a plurality of transmission sensors arranged so as to be separated from the surface by a predetermined distance, and rotating means for changing the vertical angle of the turret.

Furthermore, the prepreg winding device according to claim 3 of the present invention is characterized in that the sensor optical axes are arranged on concentric circles around the rotation axis of the near roll.

In the prepreg winding device according to claim 4 of the present invention, the sensor optical axes are arranged concentrically on a circle centered on the rotation axis of the near roll, and are arranged radially about the rotation axis of the near roll. And

  In the prepreg winding method according to the first aspect of the present invention, the distance between the prepreg winding surface and the near roll is kept constant even if the prepreg winding roll diameter increases with the prepreg winding. Since the prepreg can be wound up, the prepreg can be stably wound up while preventing wrinkles of the prepreg from occurring.

  Further, since the distance between the winding surface of the prepreg and the near roll is kept constant by changing the vertical angle of the turret, a complicated mechanism for moving the near roll is not required.

Further, in the winding method of the prepreg according to claim 1 of the present invention, it is possible to prevent the distance between the winding surface of Niaroru and the prepreg is shorter than the predetermined distance, thereby the Niaroru and the take-up roll The distance can be precisely controlled.

Further, in the winding method of the prepreg according to claim 1 of the present invention, it is arranged a plurality of transmission type sensor as the sensor optical axis are arranged on a circle concentric around the rotation axis of Niaroru Therefore, it is possible to detect the shortest distance between the near roll and the winding surface of the prepreg regardless of the position of the near roll and the winding roll, and that the distance between the near roll and the winding surface of the prepreg is shorter than the predetermined distance. It can be surely prevented.

In the prepreg winding method according to claim 2 of the present invention, a plurality of sensor optical axes are arranged concentrically with a circle centered on the rotation axis of the near roll and radially arranged about the rotation axis of the near roll. Therefore, when the distance between the near roll and the take-up roll is changed, it is not necessary to arrange the transmissive sensor each time, and the work efficiency is improved.

In the prepreg winding device according to claim 3 of the present invention, even if the winding roll diameter of the prepreg increases with winding of the prepreg, the distance between the winding surface of the prepreg and the near roll is kept constant. Since the prepreg can be wound, the prepreg can be stably wound while preventing the wrinkle of the prepreg from occurring.

  Moreover, since the distance between the winding surface of the prepreg and the near roll is kept constant by rotating the turret of the biaxial winding turret, a complicated mechanism for moving the near roll is not required.

Furthermore, in the prepreg winding device according to claim 3 of the present invention, the plurality of transmission sensors are arranged so that the sensor optical axis is arranged concentrically with a circle centered on the rotation axis of the near roll. The shortest distance between the near roll and the winding surface of the prepreg can be detected regardless of the position of the near roll and the winding roll, and the distance between the near roll and the winding surface of the prepreg is surely shorter than the predetermined distance. Can be prevented.

In the prepreg winding device according to claim 4 of the present invention, a plurality of sensor optical axes are arranged concentrically with a circle centering on the rotation axis of the near roll and radially arranged about the rotation axis of the near roll. Since the transmission type sensor is arranged, it is not necessary to arrange the transmission type sensor every time when the distance between the near roll and the take-up roll is changed, and the work efficiency is improved.

(Embodiment 1)
Hereinafter, the prepreg winding device 1 according to Embodiment 1 of the present invention will be described with reference to FIG.

  The prepreg winding device 1 according to the present embodiment includes a biaxial winding turret 4, a near roll 5 disposed on the prepreg winding side, and a transmission sensor 6 installed in the vicinity of the outer peripheral surface of the near roll 5. ing.

  The biaxial winding turret 4 includes a turret 2 that is rotatably supported by a stand 10 and two winding rolls 3 a and 3 b that are rotatably supported at both ends of the turret 2.

  Here, in FIG. 1, the left side of the paper surface is the prepreg winding side, and the right side of the paper surface is the prepreg unloading side. By rotating the turret 2 around the rotation shaft 11 by the rotating means 7, Can be moved alternately between the prepreg take-up side and the prepreg take-out side.

  The rotating means 7 comprises a turret motor (not shown) and an angle detector (not shown), and can rotate the turret 2 by a predetermined angle.

  The take-up rolls 3a and 3b are driven to rotate at a predetermined speed around the rotary shaft 13 by a take-up roll motor (not shown).

  The near roll 5 is for preventing wrinkles by winding a prepreg sheet having a warp or a wave shape while forcing the prepreg 12 around the take-up roll 3a or 3b.

  Here, the near roll 5 is disposed at a position close to the take-up roll 3 a or 3 b on the prepreg take-up side, and is rotatable about the rotary shaft 15. Moreover, the rotating shaft 15 is arrange | positioned so that it may become substantially parallel to the winding rolls 3a and 3b.

  As the transmissive sensor 6, a fiber sensor is used, and when the sensor light is cut off by a prepreg or the like (OFF state) from a state in which normal sensor light is transmitted and received (ON state). Can detect this.

  Here, the sensor optical axis of the transmissive sensor 6 is arranged so as to be substantially parallel to the rotation axis 15 of the near roll 5 and at a predetermined interval from the outer peripheral surface of the near roll 5.

  Further, in the present embodiment, five transmission sensors 6 are used, and the sensor optical axes of the transmission sensors 6 are arranged on concentric circles around the rotation axis 15 of the near roll 5.

  Next, a method for winding the prepreg 12 using the prepreg winding device 1 in the present embodiment will be described with reference to FIGS. Here, the main procedure in the case of winding the prepreg 12 around the winding roll 3a will be described.

  First, the winding roll 3a is moved to the start position on the prepreg winding side, and the end portion of the prepreg 12 is set on the winding roll 3a.

  At this time, the near roll 5 is disposed in the state of being brought close to the winding surface 12a of the winding roll 3a. Here, the distance between the winding surface 12a and the near roll 5 is preferably 5 to 30 mm. The reason is that if it is smaller than 5 mm, it is difficult to detect the transmissive sensor 6 and the near roll 5 and the winding surface 12a may come into contact with each other. This is because wrinkles occur due to restoration.

  Next, the winding roll 3a is rotated at a predetermined speed, and winding of the prepreg 12 is started.

  And as shown to Fig.2 (a), as the prepreg 12 is wound up by the winding roll 3a, the roll outer diameter of the prepreg 12 wound up becomes large, and, thereby, the winding surface 12a becomes large. Approaching near roll 5.

  Finally, as shown in FIG. 2B, the sensor light of any of the plurality of transmission sensors 6 is blocked by the roll of the prepreg 12.

  When the transmission sensor 6 detects the interruption of the sensor light, the turret 2 starts to rotate downward by the rotating means 7 so that the winding surface 12a is separated from the near roll 5, as shown in FIG. Then, when the transmission sensor 6 from which the sensor light is blocked receives the sensor light again, the rotation of the turret 2 is stopped and the winding is continued at that position.

  By repeating this operation, the prepreg 12 is wound while the distance between the winding surface 12a and the near roll 5 is kept constant.

  When the winding roll 3a finally reaches the winding diameter upper limit position, the turret 2 rotates about 180 degrees, and the winding roll 3a moves to the prepreg unloading side. Then, simultaneously with stopping the rotation of the winding roll 3a, the prepreg 12 is cut, the prepreg 12 is adhered to a new winding roll 3b, and the winding rotation to the winding roll 3b is started. Further, the take-up roll 3 a can be detached from the turret 2.

  As described above, in this embodiment, even if the roll diameter of the prepreg 12 increases as the prepreg 12 is wound, the prepreg 12 is maintained while keeping the distance between the winding surface 12a of the prepreg 12 and the near roll 5 constant. Therefore, the prepreg 12 can be stably wound, and wrinkling of the prepreg 12 can be prevented.

  Moreover, since the distance between the winding surface 12a of the prepreg 12 and the near roll 5 is kept constant by changing the vertical angle of the turret 2, a complicated mechanism for moving the near roll 5 is not required.

  Moreover, it can prevent that the distance of the near roll 5 and the winding surface 12a of the prepreg 12 becomes shorter than predetermined distance, and, thereby, the distance of the near roll 5 and the winding rolls 3a and 3b can be controlled precisely.

  Further, since the plurality of transmission sensors 6 are arranged so that the sensor optical axis is arranged concentrically with a circle centering on the rotation axis 15 of the near roll 5, the positions of the near roll 5 and the take-up rolls 3a and 3b are arranged. Regardless of this, the shortest distance between the near roll 5 and the winding surface of the prepreg 12 can be detected, and the distance between the near roll 5 and the winding surface 12a of the prepreg 12 can be reliably prevented from becoming shorter than a predetermined distance.

(Embodiment 2)
Next, the prepreg winding device 1 according to Embodiment 2 of the present invention will be described. Here, differences from the first embodiment will be mainly described.

  As shown in FIG. 4, the prepreg winding device 1 in the present embodiment is such that the sensor optical axis of the transmission sensor 6 is on a concentric circle with the rotation axis 15 of the near roll 5 as the center, and the rotation axis of the near roll 5. Fifteen transmissive sensors 6 are arranged so as to be arranged radially with 15 as the center.

  Here, the transmissive sensors 6 are arranged on a triple concentric circle, and are arranged in rows A, B, and C from the side closer to the near roll 5, respectively.

  The distances between the near roll 5 and the A, B, and C rows are preset according to the characteristics of the plurality of types of prepregs 12. Any one of the transmissive sensors 6 can be selected as appropriate and used as in the first embodiment.

  By doing so, it is not necessary to change the arrangement position of the transmission type sensor 6 in accordance with the characteristics of the prepreg 12 when exchanging the prepreg 12 such as when winding a plurality of types of prepregs 12. Increases efficiency.

  Next, another method of using the prepreg winding device 1 in this embodiment will be described.

  Here, for example, the transmissive sensors 6 of the A row and the C row are used, and when the prepreg 12 is wound, the transmissive sensor 6 of the A row is turned on, and any of the transmissive sensors 6 of the C row is selected. It is set so that it is cut off by the prepreg 12 that has been wound up and turned off.

  By doing so, it is possible to prevent the winding surface 12a from approaching the near roll 5 more than the transmission sensor 6 in the A row and to prevent the winding surface 12a from moving away from the transmission sensor 6 in the C row. .

  As described above, in the present embodiment, in addition to the effects of the first embodiment, it is not necessary to change the arrangement position of the transmissive sensor 6 in accordance with the characteristics of the prepreg 12, and the working efficiency is improved.

  Further, it is possible to prevent the winding surface 12a from approaching the near roll 5 more than a predetermined distance, and to prevent the winding surface 12a from moving away from the predetermined distance, and to increase the distance between the near roll 5 and the winding rolls 3a and 3b. It can be controlled precisely.

It is a side view which shows the prepreg winding apparatus 1 in embodiment of this invention. The principal part of the prepreg winding apparatus 1 in Embodiment 1 of this invention is shown, (a)-(c) is a side view. It is a flowchart explaining the method to wind up the prepreg 12 using the prepreg winding apparatus 1 in Embodiment 1 of this invention. It is a side view which shows the principal part of the prepreg winding apparatus 1 in Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Prepreg winding apparatus 2 Turret 3a, 3b Winding roll 4 Biaxial winding turret 5 Near roll 6 Transmission type sensor 12 Prepreg

Claims (4)

Of a prepreg wound around a take-up roll with a two-roll take-up turret in which two take-up rolls are arranged at both ends of a turret capable of rotating in the vertical direction In the prepreg winding method, which is arranged close to the winding surface and winds the prepreg on the winding roll via the near roll, the sensor optical axis is substantially parallel to the rotation axis of the near roll and a predetermined distance from the outer peripheral surface of the near roll. When the transmission type sensor is disposed so as to be in a state of being separated from each other, and the transmission type sensor detects that the distance between the winding surface and the near roll is closer than the predetermined distance, the winding surface is Ri by the changing the vertical angle of the turret away from Niaroru, constant distance between the winding plane and Niaroru Keeping None As wind the prepreg while the sensor optical axis, so as to be arranged on a circle concentric around the rotation axis of Niaroru, winding of the prepreg, characterized in that a transmission sensor arranging multiple Method. Claim 1, wherein the sensor optical axis, on the circle concentric around the rotation axis of Niaroru, and so as to be arranged radially around the rotation axis of Niaroru, characterized by arranging a plurality of transmission type sensor The winding method of the prepreg as described. A biaxial winding turret having a turret rotatable in the vertical direction and two winding rolls rotatably supported at both ends of the turret, and a winding surface of a prepreg wound around the winding roll A near roll that is disposed in the vicinity and whose rotation axis is substantially parallel to the take-up roll, and a sensor optical axis that is substantially parallel to the rotation axis of the near roll and that is separated from the outer peripheral surface of the near roll by a predetermined distance. In a prepreg winding device comprising a plurality of transmission sensors and a rotating means for changing the vertical angle of the turret , the sensor optical axes are arranged on concentric circles around a rotation axis of the near roll. the prepreg winding apparatus characterized by comprising. 4. The prepreg winding device according to claim 3 , wherein the sensor optical axes are arranged concentrically on a circle centering on the rotation axis of the near roll and radially arranged about the rotation axis of the near roll.

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