JP5022677B2 - Tire component manufacturing apparatus - Google Patents

Description

  The present invention relates to a manufacturing apparatus for manufacturing a tire constituent member such as a belt having a central portion inflated by integrally joining a plurality of belt-shaped members whose reinforcing cords are covered with rubber.

  In recent years, various developments have been made regarding the manufacture of tire constituent members such as belts, and in consideration of the convenience of tire molding, as shown in Patent Document 1, a large number of belt-like members coated with a reinforcing cord as rubber are provided. Manufacturing apparatuses that manufacture tire constituent members that are integrally joined and have a bulged central portion have been developed. And the structure and operation | movement of the manufacturing apparatus of the tire structural member which concern on this prior art are as follows.

  That is, the tire constituent member according to the prior art includes a drum support frame (not shown in Patent Document 1), and the drum support frame includes a sticking drum (a curved surface drum (Patent Document 1 has a curved surface drum)). 11)) is rotatably provided, and a drum rotating motor (servo motor (13) in Patent Document 1) for rotating the sticking drum around the drum axis is provided near the lower side of the sticking drum. ing.

  A head support frame (base (22) in Patent Document 1) is disposed in the vicinity of the upper side of the sticking drum, and the head support frame has a pair of guide portions (in a direction parallel to the drum axis direction). In patent document 1, it has a rail (23). A pair of guide portions in the head support frame is provided with a pasting head (a pasting device (21) in Patent Document 1) so as to be movable. The pasting head moves the supplied belt-like member in the drum axial direction. On the other hand, it is fed out and pasted to the outer peripheral surface of the pasting drum in a state of crossing. In the vicinity of the sticking head, a head moving motor (servo motor (28) in Patent Document 1) that moves the sticking head along the guide portion in a direction parallel to the drum axis direction is provided.

  The tire component manufacturing apparatus includes a motor control unit (the control device (40) in Patent Document 1) in addition to a sticking drum, a sticking head, and the like. The motor control unit rotates and sticks the sticking drum. The drum rotation motor and the head movement motor are driven and controlled so as to interlock the movement of the head.

  Therefore, one side of the application drum is linked to the rotation of the application drum while the application drum is rotated in the forward direction around the drum axis by the drive control of the drum rotation motor and the head movement motor by the motor control unit. Move from the vicinity of the part to the vicinity of the other side. At this time, the first belt-shaped member is fed out and pasted to the outer peripheral surface of the pasting drum in a state intersecting with the drum axial direction by the pasting head (first pasting operation).

  Next, the drum rotating motor is rotated in the reverse or forward direction around the drum axis by driving the drum rotating motor, and the head is moved from the other side of the pasting drum to the one side by driving the head moving motor. To prepare for the next sticking (sticking preparation operation).

  Similarly to the first sticking operation, the sticking head is rotated in the forward direction around the drum axis by the drive control of the drum rotating motor and the head moving motor by the motor control unit, and the sticking head is rotated. In conjunction with this, it is moved from the vicinity of one side of the sticking drum to the vicinity of the other side. At this time, the second and subsequent belt-like members crossed with respect to the drum axis direction by the pasting head are pasted and pasted to the outer peripheral surface of the pasting drum, and are brought into close contact with the previously pasted belt-like member (second and subsequent times). Pasting operation).

  Furthermore, by repeating the pasting preparation operation and the second and subsequent pasting operations alternately, a large number of strip members are integrally coupled.

As described above, a tire constituent member having an inflated central portion can be manufactured.
Japanese Patent Laid-Open No. 2004-202804

  By the way, since the central portion of the sticking drum is swollen as described above, the sticking head is moved from the vicinity of one side of the sticking drum to the other side with the distance between the outer peripheral surface of the sticking drum and the sticking head kept substantially constant. It cannot be moved to the vicinity of the portion, and the tension of the belt-shaped member that is fed out and pasted to the outer peripheral surface of the pasting drum changes. Therefore, there is a problem that the slack of the belt-shaped member is likely to occur on the outer peripheral surface of the sticking drum, and it is difficult to improve the quality of the tire constituent member.

  Accordingly, an object of the present invention is to provide a tire constituent member manufacturing apparatus having a novel configuration that can solve the above-described conventional problems.

  A first feature of the present invention (a feature of the invention described in claim 1) is that a tire constituting member in which a central portion is inflated is manufactured by integrally joining a plurality of strip-shaped members whose reinforcing cords are covered with rubber. A manufacturing apparatus, comprising: a drum support frame; a sticking drum that is rotatably provided on the drum support frame; and a drum rotation motor that rotates the sticking drum about a drum axis; and the sticking drum A head support frame having a contour guide portion disposed in the vicinity of the drum and extending in a direction parallel to the drum axial direction so as to follow the contour of the outer peripheral surface of the sticking drum, and the contour guide portion in the head support frame Affixed to the outer peripheral surface of the affixing drum in a state where the supplied belt-shaped member intersects the drum axis direction. A head, a head moving motor for moving the sticking head along the contour guide portion in a direction parallel to the drum axis direction, and the drum so that the rotation of the sticking drum and the movement of the sticking head are linked. And a motor control unit that drives and controls the rotation motor and the head movement motor.

  According to the first feature, when the sticking head is moved from the vicinity of one side of the sticking drum to the vicinity of the other side in conjunction with the rotation of the sticking drum, the belt-like member is moved in the drum axial direction by the sticking head. Is fed out and pasted to the outer peripheral surface of the sticking drum in a state of crossing with respect to the sticking drum.

  Here, the contour guide part extends in a direction parallel to the drum axial direction so as to follow the contour of the outer peripheral surface of the sticking drum, and the sticking head is movably provided in the contour guide part. Even if the central portion of the sticking drum is swollen, the sticking head is moved from the vicinity of one side of the sticking drum to the central portion in a state where the distance between the outer peripheral surface of the sticking drum and the sticking head is kept substantially constant. It can be moved to the vicinity of the other side portion through the vicinity, and the change in the tension of the belt-shaped member that is fed out and pasted to the outer peripheral surface of the pasting drum can be suppressed.

  According to a second feature of the present invention (a feature of the invention described in claim 2), in addition to the first feature, the motor control unit is configured such that the pasting head moves to the vicinity of the center of the pasting drum. The rotational speed of the sticking drum is gradually increased based on the S-shaped speed waveform pattern, and the sticking drum is based on the S-shaped speed waveform pattern when the sticking head moves from the vicinity of the center of the sticking drum. The gist of the invention is that the drum rotation motor can be driven and controlled so as to gradually reduce the rotation speed of the drum.

  According to the invention described in claim 1 or claim 2, even if the central portion of the sticking drum is swollen, it is possible to suppress a change in the tension of the belt-shaped member that is fed out and stuck to the outer peripheral surface of the sticking drum. The slack of the belt-like member hardly occurs on the outer peripheral surface of the sticking drum, and the quality of the tire constituent member can be improved.

  An embodiment of the present invention will be described with reference to FIGS. Here, FIG. 1 is a schematic perspective view of a strip-shaped member manufacturing apparatus according to an embodiment of the present invention, FIG. 2 is a schematic front view of a strip-shaped member according to an embodiment of the present invention, and FIG. FIG. 4 is a schematic side view of a band-shaped member according to an embodiment of the present invention, and FIG. 4 is a diagram showing an S-shaped velocity waveform pattern and a trapezoidal velocity waveform pattern. In the figure, “L” indicates the left direction, “R” indicates the right direction, “FF” indicates the front direction, and “FR” indicates the rear direction.

  As shown in FIG. 1 to FIG. 3, the strip-shaped member manufacturing apparatus 1 according to the embodiment of the present invention integrally couples a plurality of strip-shaped members 3 coated with a steel cord (not shown) as a reinforcing cord. Thus, a manufacturing apparatus for manufacturing a belt (see FIG. 4 of Patent Document 1) as a tire constituent member having an inflated central portion, the specific configuration of the belt-shaped member manufacturing apparatus 1 is as follows. .

  That is, the belt-shaped member manufacturing apparatus 1 includes a drum support frame 5, and a sticking drum 7 having a swelled central portion is rotatably provided on an upper portion of the drum support frame 5. The sticking drum 7 includes a plurality of electromagnetic magnets 9 divided in the circumferential direction.

  A drum rotation servomotor 11 that rotates the sticking drum 7 around the drum shaft 7s is provided at the lower right side of the drum support frame 5. An output shaft (not shown) of the drum rotation servomotor 11 is The drum shaft 7s of the sticking drum 7 is interlocked and connected via a gear mechanism or a chain mechanism (not shown).

  A head support frame 13 is disposed in the vicinity of the sticking drum 7, and the head support frame 13 is arranged on the upper side along the contour of the outer peripheral surface of the sticking drum 7 in the drum axis direction (the length of the drum shaft 7 s). A contour guide portion (contour guide groove) 15 extending in a direction parallel to (direction) (left-right direction). Further, the contour guide portion 15 is provided with a sticking head 17 so as to be movable. The sticking head 17 has an outer peripheral surface of the sticking drum 7 in a state where the supplied belt-like member 3 intersects the drum axial direction. It sticks out and sticks.

  A head moving servo motor 19 that moves the sticking head 17 in the left-right direction along the contour guide portion 15 is provided at the lower left portion of the head support frame 13. A ball screw 21 extending in the left-right direction is rotatably provided at the lower portion of the head support frame 13. The ball screw 21 is coaxial with the output shaft (not shown) of the head moving servo motor 19. The ball screw 21 is provided with a nut member 23 screwed together. The head support frame 13 is provided with an endless chain 25 that can travel through a pair of upper sprockets 27, 29 and a pair of lower sprockets 31, 33. The nut member 23 is connected to a portion of the chain 25 that travels between the pair of lower sprockets 31 and 33. A chain guide 35 that can guide a portion of the chain 25 that travels between the pair of upper sprockets 27 and 29 is integrally formed on the upper portion of the head support frame 13.

  Therefore, by rotating the ball screw 21 by driving the head moving servo motor 19 and moving the nut member 23 to the right, the chain 25 is caused to travel in a predetermined traveling direction (counterclockwise in FIG. 2). Thus, the sticking head 17 can be moved from the vicinity of the right side of the sticking drum 7 to the vicinity of the left side via the vicinity of the center. Further, the ball screw 21 is rotated by driving the head moving servo motor 19 to move the nut member 23 in the left direction, whereby the chain 25 is moved in the direction opposite to the predetermined traveling direction (clockwise in FIG. 2). The application head 17 can be moved and moved from the vicinity of the left side of the application drum 7 to the vicinity of the right side through the vicinity of the center.

  The belt-shaped member manufacturing apparatus 1 includes a motor control unit 37 having a CPU, a ROM, and a RAM in addition to the sticking drum 7, the sticking head 17, and the like. The drum rotating servo motor 11 and the head moving servo motor 19 are driven and controlled so that the rotation and the movement of the pasting head 17 are interlocked. As shown in FIG. 4, the motor control unit 37 is based on the S-shaped velocity waveform pattern when the sticking head 17 moves from the vicinity of the right side (and the vicinity of the left side) of the sticking drum 7 to the vicinity of the center. The rotational speed of the sticking drum 7 is gradually increased, and the sticking drum 7 is moved based on the S-shaped velocity waveform pattern when the sticking head 17 moves from the vicinity of the center of the sticking drum 7 to the vicinity of the left side (and the vicinity of the right side). The drum rotation servomotor 11 can be driven and controlled so as to gradually reduce the rotation speed of the drum rotation servomotor 11. The ROM in the motor control unit 37 stores an S-shaped velocity waveform pattern.

  As shown in FIGS. 1 and 3, in the vicinity of the rear side of the head support frame 13, a supply conveyor 39 that supplies the belt-like member 3 to the sticking head 17 while being inclined with respect to the drum axial direction of the sticking drum 7. The supply conveyor 39 may be a roller conveyor having a plurality of rotatable supply rollers, or may be a belt conveyor having a supply belt that can circulate.

  Then, operation | movement of the manufacturing apparatus 1 of a strip | belt-shaped member is demonstrated including embodiment of this invention.

  By applying drive control of the drum rotating servo motor 11 and head moving servo motor 19 by the motor control unit 37, the pasting drum 7 is rotated in the forward direction (counterclockwise in FIG. 3) about the drum shaft 7s, and the pasting head. 17 is moved from the vicinity of the right side of the pasting drum 7 to the vicinity of the left side via the vicinity of the central portion in conjunction with the rotation of the pasting drum 7. At this time, using the magnetic force of the plurality of electromagnetic magnets 9, the first belt-like member 3 is drawn out and pasted to the outer peripheral surface of the pasting drum 7 by the pasting head 17 while intersecting the drum axial direction (1 The second pasting operation).

  Next, the pasting drum 7 is rotated in the reverse direction (clockwise in FIG. 3) or the forward direction around the drum shaft 7s by driving the drum rotating servo motor 11, and pasted by driving the head moving servo motor 19. The head 17 is moved from the vicinity of the left side of the sticking drum 7 to the vicinity of the right side through the vicinity of the central part to prepare for the next sticking (sticking preparation operation).

  Similarly to the first pasting operation, while the drum control servo motor 11 and the head moving servo motor 19 are controlled by the motor control unit 37 to rotate the pasting drum 7 around the drum shaft 7s in the positive direction, The pasting head 17 is moved from the vicinity of the right side of the pasting drum 7 to the vicinity of the left side via the vicinity of the central portion in conjunction with the rotation of the pasting drum 7. At this time, while using the magnetic force of the plurality of electromagnetic magnets 9, the second and subsequent belt-like members 3 are fed out and pasted to the outer peripheral surface of the pasting drum 7 with the pasting head 17 intersecting the drum axis direction, The belt-like member 3 attached in advance is brought into intimate contact (second sticking operation).

  Furthermore, by repeating the pasting preparation operation and the second and subsequent pasting operations alternately, a large number of strip members 3 are integrally coupled.

  As described above, a belt having a swollen central portion can be manufactured.

  Here, the contour guide portion 15 extends in a direction parallel to the drum axial direction so as to follow the contour of the outer peripheral surface of the sticking drum 7, and the sticking head 17 is provided on the contour guide portion 15 so as to be movable. Even if the central portion of the sticking drum 7 is swollen, the sticking head 17 is moved from the right side of the sticking drum 7 to the vicinity of the central portion in a state where the distance between the outer peripheral surface of the sticking drum 7 and the sticking head 17 is kept substantially constant. Can be moved to the vicinity of the left side portion, and the change in the tension of the belt-like member 3 that is fed out and pasted to the outer peripheral surface of the sticking drum 7 can be suppressed.

  Further, when the application head 17 moves to the vicinity of the center of the application drum 7 by the drive control of the drum rotation servomotor 11 by the motor control unit 37, the rotation speed of the application drum 7 based on the S-shaped speed waveform pattern. And the rotational speed of the application drum 7 is gradually reduced based on the S-shaped velocity waveform pattern when the application head 17 moves from the vicinity of the center of the application drum 7. Compared with the case where the rotational speed of the application drum 7 is controlled based on the speed waveform pattern (see FIG. 4), the acceleration / deceleration of the application head 17 is increased by reducing the change in the acceleration / deceleration speed of the application head 17. can do.

  As described above, according to the embodiment of the present invention, even if the central portion of the sticking drum 7 is swollen, it is possible to suppress a change in the tension of the belt-like member 3 that is fed out and stuck to the outer peripheral surface of the sticking drum 7. 7 is less likely to sag on the outer peripheral surface of the belt 7 and the quality of the belt can be improved.

  Further, the acceleration / deceleration of the application head 17 can be increased by reducing the change in the acceleration / deceleration speed of the application head 17 as compared with the case where the rotational speed of the application drum 7 is controlled based on the trapezoidal velocity waveform pattern. Therefore, the maximum speed of the sticking drum 7 can be increased to shorten the tact time, and the productivity of the belt can be improved.

  In addition, this invention is not restricted to description of the above-mentioned embodiment, In addition, it can implement in a various aspect. Further, the scope of rights encompassed by the present invention is not limited to these embodiments.

It is a typical perspective view of the manufacturing apparatus of the strip shaped member concerning the embodiment of the present invention. It is a typical front view of the strip | belt-shaped member which concerns on embodiment of this invention. It is a typical side view of the strip | belt-shaped member which concerns on embodiment of this invention. It is a figure which shows a S-shaped velocity waveform pattern and a trapezoidal velocity waveform pattern.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Manufacturing apparatus of a strip | belt-shaped member 3 Band-shaped member 5 Drum support frame 7 Sticking drum 7s Drum shaft 11 Drum rotation servomotor 13 Head support frame 15 Contour guide part 17 Sticking head 19 Head moving servomotor 37 Motor control unit

Claims (1)

A manufacturing apparatus for manufacturing a tire constituent member in which a central portion is inflated by integrally joining a plurality of belt-shaped members whose reinforcing cords are covered with rubber,
A drum support frame;
A sticking drum provided rotatably on the drum support frame and having a bulged central portion;
A drum rotating motor for rotating the sticking drum around a drum axis;
A head support frame having a contour guide portion disposed in the vicinity of the sticking drum and extending in a direction parallel to the drum axial direction so as to follow the contour of the outer peripheral surface of the sticking drum;
A pasting head that is movably provided in the contour guide part in the head support frame, and that feeds and pastes the supplied strip-shaped member to the outer peripheral surface of the pasting drum in a state intersecting the drum axial direction;
A head moving motor that moves the sticking head along the contour guide portion in a direction parallel to the drum axis direction;
A motor control unit that drives and controls the drum rotating motor and the head moving motor so as to interlock the rotation of the pasting drum and the movement of the pasting head;
It has
The motor control unit gradually increases the rotational speed of the sticking drum based on an S-shaped speed waveform pattern when the sticking head moves to the vicinity of the center of the sticking drum, and the sticking head The drum rotation motor can be driven and controlled so that the rotation speed of the application drum is gradually decreased based on the S-shaped velocity waveform pattern when moving from the vicinity of the center of the application drum. An apparatus for manufacturing tire constituent members.

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