JP4753649B2 - Manufacturing method and manufacturing apparatus of tire constituent member. - Google Patents

Description

  The present invention relates to a method and an apparatus for manufacturing a tire constituent member such as a belt by orienting strip-shaped rubber strip pieces on an outer peripheral curved surface of a curved drum in an oblique direction and sequentially attaching the strips in the circumferential direction.

  By attaching the rubber strip piece to the outer peripheral curved surface of the rotating curved drum while moving the rubber strip piece in the axial direction, the rubber strip piece can be attached to the outer peripheral curved surface of the curved drum in an oblique direction.

  FIG. 8 is an explanatory view showing the rubber strip portion 01 affixed to the outer peripheral curved surface of a conventional curved drum in a planar manner, and the entire system is rotated in the direction opposite to the rotational direction of the curved drum to rubber. The outer peripheral curved surface to which the strip piece 01 is attached is fixed and considered.

If the curved drum is rotated at an angular speed ω and the rubber strip piece is applied while moving in the axial direction at a moving speed V, the circumferential application speed at a given application position P is the distance from the rotation center axis of the application position. If the (radius) is r, rω and the sticking speed in the axial direction is V. Therefore, the oblique direction in which the combined vector of the circumferential vector and the axial vector of the sticking speed is the sticking direction.
The inclination angle φ of the sticking direction with respect to the axial direction has a relationship of tan φ = rω / V.

  The curved drum with the outer peripheral curved surface with the central part swollen from the both sides has a larger circumference at the center than the circumference of both sides. By changing the inclination angle φ of the rubber drum so that it is a minimum at both sides of the curved drum and a maximum at the center, the length occupied by one rubber strip piece on both sides is minimized. There is an example (Patent Document 1) related to the prior application of the same applicant that prevents the gap between adjacent rubber strip pieces from being maximized so that a gap is not generated particularly in the central portion.

JP 2002-202804 A

  Changing the inclination angle φ in the sticking direction in this way means bending the rubber strip piece, and if the rubber strip piece having a predetermined width is bent, the inner side edge 01i that contracts in the bending direction and the outer side that extends. The radius of curvature is different from the edge 01o.

  The inner side of the preceding rubber strip piece that has been bent and deformed when the following rubber strip piece is attached to the preceding rubber strip piece that has been attached to the outer peripheral curved surface of the curved drum with a width shifted. The outer side edge 01o (and the inner side edge 01i) of the following rubber strip piece is in contact with the edge 01i (and the outer side edge 01o), and the side edges having different curvature radii are in contact with each other, thereby generating a gap. Or more than necessary.

  The present invention has been made in view of the above points, and the object of the present invention is a method and a method for manufacturing a tire constituent member capable of sequentially sticking rubber strip pieces to a curved drum without forming a gap. The point is to provide the device.

  In order to achieve the above object, the invention according to claim 1 is directed to an axial direction while supplying a strip-shaped rubber strip piece in an oblique direction to the rotating outer peripheral curved surface of a curved drum whose center portion swells from both sides. In the method of manufacturing a tire component by affixing a plurality of rubber strip pieces by repeating this process while sequentially shifting the affixing position in the circumferential direction. A tire constituent member for adhering the rubber strip piece to the outer peripheral curved surface of the curved drum so that the speed ratio between the circumferential application speed and the axial application speed of the rubber strip piece on the outer peripheral curved surface of the drum is always substantially constant. It was set as the manufacturing method of this.

  According to a second aspect of the present invention, in the tire component manufacturing method according to the first aspect, the circumferential direction sticking speed is controlled by an angular speed control in which the curved drum is rotated at a constant angular acceleration and then decelerated at a constant angular deceleration. At the same time, the axial movement of the rubber strip piece is pasted by the speed control by constant acceleration after constant acceleration, and then the axial movement by speed control which becomes a constant speed after another constant acceleration and then constant deceleration. In addition, the axial sticking speed is used.

  According to a third aspect of the present invention, there is provided a rotational drive mechanism for rotationally driving a curved drum having a central portion swelled from both side portions, and a piece supplying and pasting means for feeding and sticking a belt-like rubber strip piece to the outer peripheral curved surface of the curved drum. And an axial movement mechanism for moving the supply sticking position of the piece supply sticking means in the axial direction along the outer peripheral curved surface of the curved drum, and the rubber strip piece is obliquely disposed on the outer peripheral curved surface rotated by the curved drum. In the tire component manufacturing apparatus that manufactures affixed tire component by moving it in the axial direction while supplying it in the direction of the circumferential direction, the circumferential direction sticking speed and the axial movement due to the rotation of the outer peripheral curved surface of the curved drum by the rotational drive mechanism The axial movement mechanism is controlled by a multiple drive mechanism with a plurality of drive sources so that the speed ratio with the axial paste speed due to movement of the supply sticking position by the mechanism is always substantially constant. An apparatus for producing made is to have tire components.

  According to a fourth aspect of the present invention, in the tire component manufacturing apparatus according to the third aspect, the rotation drive mechanism is driven by a single drum rotation motor, and the axial movement mechanism constitutes a ball screw mechanism. A double drive mechanism is constituted by being driven by two motors, a screw rod rotating motor for rotating the screw rod and a nut rotating motor for rotating a nut screwed to the screw rod.

  According to the method for manufacturing a tire constituent member according to claim 1, the speed ratio between the circumferential application speed of the rubber strip piece and the axial application speed on the outer peripheral curved surface of the curved drum is always substantially constant. Since the rubber strip piece is pasted on the outer peripheral curved surface of the curved drum, the sticking direction (inclination angle with respect to the axial direction) of the rubber strip piece is the direction in which the combined vector of the circumferential sticking speed vector and the axial sticking speed vector is directed. The rubber strip piece is always substantially constant, so the rubber strip piece is affixed to the curved drum in a straight line with little bending in the circumferential direction, and the front side edge and the rear side edge in the rotational direction of the rubber strip piece have substantially the same shape. Show.

  Therefore, the front side edge of the succeeding rubber strip piece can be attached to the rear side edge of the preceding rubber strip piece, which is pasted first, and the gap between the adjacent rubber strip pieces can be affixed. In addition, a high-quality tire constituent member can be manufactured without generating excessive overlapping portions.

  According to the method for manufacturing a tire constituent member according to claim 2, the circumferential direction sticking speed is set by angular speed control in which the curved drum is rotated at a constant angular acceleration and then decelerated and rotated at a constant angular deceleration. The above-mentioned axial sticking speed is obtained by superimposing the axial movement by the speed control for constant acceleration after constant acceleration after the supply sticking position of the rubber strip piece on top of the axial movement by the speed control for another constant acceleration and then constant deceleration after that. By doing so, the speed ratio between the circumferential sticking speed and the axial sticking speed can be easily made constant at all times.

  According to the tire constituent member manufacturing apparatus of claim 3, the speed between the circumferential sticking speed due to the rotation of the outer peripheral curved surface of the curved drum by the rotational drive mechanism and the axial sticking speed due to the movement of the supply sticking position by the axial movement mechanism. Since the axial movement mechanism is composed of a multiple drive mechanism with a plurality of drive sources so that the ratio is always substantially constant, the combined vector of the circumferential application speed vector and the axial application speed vector is the direction directed. The sticking direction of the rubber strip piece (inclination angle with respect to the axial direction) is always substantially constant, so the rubber strip piece is attached to the curved drum in a straight line with little bending, and the front side of the rubber strip piece in the rotational direction. The side edge and the rear side edge can exhibit substantially the same shape.

  Therefore, the front side edge of the succeeding rubber strip piece can be attached to the rear side edge of the preceding rubber strip piece, which is pasted first, and the gap between the adjacent rubber strip pieces can be affixed. In addition, a high-quality tire constituent member can be manufactured without generating excessive overlapping portions.

  According to the tire component manufacturing apparatus according to claim 4, the rotational drive mechanism is driven by one drum rotating motor, whereas the axial movement mechanism constitutes a ball screw mechanism, and the screw rod is Since it is driven by two motors, a screw rod rotation motor that rotates and a nut rotation motor that rotates a nut that is screwed to the screw rod, a double drive mechanism is configured, so the rubber strip pieces are attached in the circumferential direction. It is easy to keep the speed ratio between the speed and the axial sticking speed almost constant with a simple structure.

Hereinafter, an embodiment according to the present invention will be described with reference to FIGS.
The tire constituent member manufactured in the present embodiment is a belt member, and the rubber strip portion 1 is bonded to the outer peripheral surface of the curved drum 5 (including the case where the carcass ply of the tire constitutes the outer peripheral surface). Manufactured.
FIG. 1 is an overall side view of the curved drum 5 and the rubber strip piece sticking device 10, FIG. 2 is a front view of the main part of the rubber strip piece sticking device 10, and FIG. 3 is a rear view of the main part. It is.

The curved drum 5 is supported by a rotating shaft extending in the horizontal direction by a servo motor 7 of the drum driving mechanism 6 and is driven to rotate (see FIG. 3).
In the rubber strip piece pasting device 10, a pair of upper and lower magnet drums 11 and 12 facing the curved drum 5 are pivotally supported on the side plate of the frame 13 by rotating shafts 11a and 12a.

  The rotary shafts 11a and 12a have pulleys 16b and 17b through one-way clutches 14 and 15 at the end protruding from one side plate, and are fitted to the drive shafts of the servo motors 16 and 17 attached to the frame 13. Timing belt pulleys 16c and 17c are bridged between the pulleys 16a and 17a and the pulleys 16b and 17b.

The magnet drums 11 and 12 have a groove formed in the center in the axial direction and are divided into left and right sides, and magnets are arranged on the outer circumference over the entire circumference.
Arms 18a and 19a extend from the frame 13 into the respective central grooves of the magnet drums 11 and 12, and narrow pressure rollers 18 and 19 are pivotally supported at the ends of the arms 18a and 19a. The outer peripheral surface is arranged slightly downstream from the surface facing the 12 curved drums 5.

Also, wider pressing rollers 20, 21 are attached to the frame 13 via bearings 20a, 21a further downstream than the pressing rollers 18, 19.
A plurality of guide rollers 22 and 23 are arranged in an arc shape along the outer periphery of the magnet drums 11 and 12 from the facing portions of the magnet drums 11 and 12 toward the curved drum 5 side.

The frame 13 supporting the magnetic drums 11, 12, etc. is slidably fitted to a pair of front and rear arc-shaped rails 26, 26 whose base 13 a at the lower end is fixed to the left / right sliding base 25. It is guided by the arc-shaped rails 26 and 26 and is supported so as to be able to turn.
Therefore, the magnet drums 11 and 12 facing the curved drum 5 can be tilted by turning their postures to the left and right.

The left-right direction sliding base 25 is slidably supported by a pair of front and rear rails 28, 28 laid in the left-right direction on the vertical direction sliding base 27.
The vertical slide 27 is guided by a pair of front and rear rails 31, 31 erected on the front / rear slide 30, and can be moved up and down by an air cylinder 32.
Further, the front / rear direction slide base 30 is guided by a rail 36 oriented in the front / rear direction on the base 35 and is supported by an air cylinder 37 so as to be slidable in the front / rear direction.

  Therefore, the magnet drums 11 and 12 supported by the left-right direction sliding base 25 so as to be rotatable are moved back and forth by driving the air cylinder 37 and moved up and down by driving the air cylinder 32 and moved back and forth with respect to the curved drum 5. The relative position in the vertical direction can be set.

The sliding in the left-right direction of the left-right sliding base 25 with respect to the vertical sliding base 27 is executed by the ball screw mechanism 40.
Referring to FIG. 3, a vertical sliding base 27 that is long in the left-right direction is arranged with bearings 27 a, 27 b facing the left and right ends, and pivotally supports both ends of the ball screw 41.
A servo motor 42 is attached to the left end bearing 27a, and the ball screw 41 is rotated by driving the servo motor 42.

A nut holder 44 that rotatably holds a nut 43 that is screwed into the ball screw 41 is supported by a support member 45 that protrudes from the left-right sliding base 25.
An annular driven gear 43g through which the ball screw 41 penetrates is fixed to the left side surface of the nut 43, and rotates together with the nut 43.

  On the other hand, a servo motor 46 is fixed to the support member 45, and a drive gear 46 g is fitted on a drive shaft that protrudes to the left of the servo motor 46, and between the servo motor 46 and the nut holder 44. An intermediate gear 47g supported by an intermediate shaft 47 projecting from the support member 45 meshes with the drive gear 46g and meshes with the driven gear 43g.

The servomotor 46, the driven gear 43g, the intermediate gear 47g, the gear mechanism of the driven gear 43g, and the nut 43 are mounted on the left / right sliding base 25 by a support member 45.
Therefore, when the driven gear 43g rotates together with the nut 43 through the gear mechanism by driving the servo motor 46, the nut 43 screwed with the ball screw 41 rotates together with the nut 43 via the nut holder 44 and the support member 45. The frame 13 can be moved in the left-right direction (axial direction of the rotation center axis).

Further, when the ball screw 41 is simultaneously rotated by driving the servo motor 42, the frame 13 is moved in the left-right direction (axial direction of the rotation center axis) through the nut holder 44 and the support member 45 together with the nut 43 screwed to the ball screw 41. Can move.
Thus, the axial direction moving mechanism of the frame 13 is constituted by a ball screw mechanism, and is driven by two servo motors of the servo motor 42 and the servo motor 46 to constitute a double drive mechanism.

The frame 13 that supports the magnet drums 11 and 12 is provided with a flat cylindrical guide member 50 that supplies the long parallelogram rubber strip piece 1 to the magnet drums 11 and 12.
The guide member 50 extends from behind the frame body 13 between the magnet drums 11 and 12.

A rail 51 is laid in parallel to the guide member 50, and a sliding member 52 is slidably fitted to the rail 51.
A long groove is formed in the longitudinal direction on the lower wall of the guide member 50 on the rail 51 side, and a magnet 53 mounted on the sliding member 52 is inserted into the long groove so that the rubber strip piece 1 in the guide member 50 is inserted. The rubber strip piece 1 can be pushed out to the magnet drums 11 and 12 side by attracting the rear end and moving the sliding member 52.

  The rubber strip piece 1 has a long parallelogram with both ends of the belt cut obliquely, and a steel cord is embedded inside, so that it is attracted to the magnet 53 and the magnet drums 11 and 12. .

The rubber strip piece sticking device 10 has the above-described structure. For example, the magnet drums 11 and 12 are set to the posture and the vertical position as shown in FIG.
FIG. 3 shows an example in which the rubber strip piece 1 is attached to the curved drum 5 by using the upper magnet drum 11.

That is, the rotation center axis of the upper magnet drum 11 intersects at the same height position as the rotation center axis of the curved drum 5 and is inclined by a predetermined angle θ.
This angle θ is equal to the acute angle θ of the tip of the long parallelogram rubber strip piece 1.
Then, the magnet drum 11 is moved in the left-right direction so as to face the sticking start position of the curved drum 5.

In this state, the rubber strip portion 1 in the guide member 50 is first adsorbed at the rear end by the magnet 53 and pushed out by the sliding member 52. As shown in FIG. The piece 1 is extruded between the magnet drum 11 and the guide roller 23 from the outlet of the guide member 50, and is continuously attracted to the magnet drum 11 from the tip by the rotational drive of the magnet drum 11, and between the guide roller 23. Wrap around.
During this period, the magnet 53 that has attracted the rear end of the rubber strip piece 1 releases the rear end and releases the rear end.

  When the tip of the rubber strip piece 1 adsorbed to the magnet drum 11 by the rotation of the magnet drum 11 reaches a position facing the curved drum 5, the rotation of the magnet drum 11 is stopped and the magnet drum 11 is advanced to rubber. The front end of the strip piece 1 is pressed against the sticking start position of the curved drum 5.

  From here, the servo motor 7 is driven to rotate the curved drum 5, and at the same time the magnet drum 11 is rotated by driving the servo motor 16, and the magnet drum 11 is driven in the axial direction (right direction by the servo motor 42 and servo motor 46). The rubber strip piece 1 is obliquely transferred and affixed to the outer peripheral surface of the curved drum 5 that moves and rotates.

  The magnet drum 11 is driven at an outer peripheral surface speed equal to or lower than the outer peripheral curved surface speed of the curved drum 5, and the one-way clutch 14 is built in between the pulley 16b and the rotating shaft 11a. By rotating, the rubber strip piece 1 is attracted and guided to the transfer position, and when the transfer starts, the curved surface drum 5 and the magnet drum 11 are rotated so that both side surfaces of the rubber strip piece are sent out at the same time, thereby causing an extreme speed difference. The tip moves smoothly and the one-way clutch 14 rotates with the outer peripheral surface speed of the curved drum 5 matched to the outer peripheral surface speed of the curved drum 5 to prevent wrinkles due to the speed difference and perform stable transfer. Is called.

The rubber strip piece 1 is pressed against the curved drum 5 by the magnet drum 11 and is peeled off from the magnet drum 11 by the adhesive force of the rubber strip piece 1 to the curved drum 5. 18 is surely peeled off from the magnet drum 11 and moved to the curved drum 5, and subsequently transferred to the curved drum 5 continuously.
Further, the rubber strip piece 1 is pressed against the curved drum 5 with the full width by the pressing roller 20 on the further downstream side.

  When the rubber strip piece 1 is pasted to the curved drum 5 to the rear end in this way, the magnet drum 11 moves backward from the curved drum 5 and moves to the left to return to the original pasting start position. Reversely rotates so that the position where the tip of the next rubber strip piece 1 is pasted is opposed to the magnet drum 11.

The above-mentioned steps are sequentially performed from the supply of the next rubber strip piece 1, and the next rubber strip piece 1 is adjacent to the previously attached rubber strip piece 1 (with the side edges partially overlapped). Is pasted.
By repeating this, the rubber strip piece 1 is attached over the entire outer peripheral surface of the curved drum 5 to manufacture the belt member.

  As described above, when the rubber strip piece 1 is affixed to the curved drum 5, the rubber strip piece 1 that is attracted to the magnet drum 11 and maintains its shape is curved with its shape maintained. Since it is pressed and transferred to the drum 5, it is stuck in a desired shape on a desired position on the outer peripheral surface of the curved drum 5.

In the present embodiment, FIG. 5 is an explanatory view showing the rubber strip portion 1 affixed to the outer peripheral curved surface of the curved drum 5 in a planar manner.
The entire system is rotated in the direction opposite to the rotation direction of the curved drum 5 and the outer peripheral curved surface to which the rubber strip piece 1 is attached is fixed and considered.

  When the curved drum 5 is rotated at the angular velocity ω by the drive of the servo motor 7 and the pasting position is moved in the axial direction at the moving speed V by the double drive mechanism of the servo motor 42 and the servo motor 46, as described above, a certain pasting position The circumferential application speed at P is rω, where r is the distance (radius) from the rotation center axis of the application position, and since the axial application speed is V, the circumferential vector and axial vector of this application speed are The oblique direction in which the resultant vector is directed becomes the pasting direction, and the inclination angle φ with respect to the axial direction of the pasting direction has a relationship of tan φ = rω / V.

  Note that the inclination angle φ is substantially in a relationship (φ + θ≈90 degrees) with the angle θ of the rotation center axis of the magnet drum 11 with respect to the rotation center axis of the curved drum 5 described above.

  The rubber strip piece sticking device 10 according to the present embodiment sticks the rubber strip piece 1 at a high speed. When the rubber strip piece 1 is stuck, the servo motor 7 keeps the curved drum 5 constant. It is driven by an angular velocity control that rotates at an increased speed by angular acceleration and then decelerates at a fixed angular deceleration, and does not have a constant angular velocity state.

In FIG. 6 (1), the change in the angular velocity ω of the curved drum 5 by the servo motor 7 is indicated by a broken line.
In (1) of FIG. 6, the horizontal axis indicates the axial distance x from the sticking start point of the rubber strip piece 1, and the vertical axis indicates the angular velocity ω and the circumferential velocity rω at the same time.

  Assuming that the axial width at which the rubber strip piece 1 is pasted is W, the angular velocity ω rises linearly at a constant angular acceleration from 0 at the pasting start position (x = 0), and the pasting center position (x = W / It becomes maximum at 2), and then descends linearly at a constant angular deceleration and changes to 0 at the pasting end position (x = W).

On the other hand, the outer peripheral curved surface in which the central portion swells from both side portions of the curved surface drum 5 forms a curved surface in which the radius r of the sticking position x is small at both side portions and has the maximum at the central portion. The circumferential sticking speed rω multiplied by the radius r draws a curve indicated by a solid line in (1) of FIG.
In other words, the circumferential application speed rω rapidly rises from 0 at the application start position (x = 0), then smoothly moves to a gentle increase, reaches a maximum at the application center position (x = W / 2), and then changes gradually. After that, it smoothly moves down rapidly and changes to 0 at the pasting end position (x = W).

On the other hand, the change in the axial sticking speed V by the double drive mechanism of the servo motor 42 and the servo motor 46 is shown in FIG.
6 (2), the horizontal axis indicates the axial distance x from the sticking start point, and the vertical axis indicates the velocity V.

Of the two motors, the axial movement speed v ₁ by the servo motor 42 that rotationally drives the ball screw 41 does not have a constant speed state by speed control that decelerates after a certain acceleration because it is still applied at a high speed. The speed v ₁ increases linearly at a constant acceleration from 0 at the sticking start position (x = 0) as shown by a one-dot chain line in FIG. 6 (2), and the sticking center position (x = W / 2). And then descends linearly at a constant deceleration and changes to 0 at the pasting end position (x = W).

Further, the axial movement speed v ₂ by the servo motor 46 for rotating the other of the nut 43, since the maximum speed is low, then to maintain a constant speed until sticking end position near becomes constant rapid acceleration immediately after constant rate constant As shown by a two-dot chain line in FIG. 6 (2), the sudden speed reduction of the speed suddenly rises linearly at a constant sudden acceleration from 0 at the sticking start position (x = 0) and immediately becomes a constant speed. In the vicinity of the pasting end position (x = W), it suddenly descends linearly at a constant rapid deceleration and changes to 0 at the pasting end position (x = W).

A speed obtained by superimposing the axial movement speed v ₁ by the servo motor 42 and the axial movement speed v ₂ by the servo motor 46 is an axial pasting speed V (= v ₁ + v ₂ ).
Accordingly, as shown by the solid line in FIG. 6 (2), the axial direction sticking speed V rapidly increases from 0 of the sticking start position (x = 0), then moves slowly, and the sticking center position (x = W / 2), the maximum value is reached, and then a gentle drop is made, followed by a sudden drop, and 0 changes at the pasting end position (x = W).

The change in the axial sticking speed V shown in (2) of FIG. 6 is generally similar to the change in the circumferential sticking speed rω shown in (1) of FIG.
Therefore, the speed ratio rω / V between them always shows a substantially constant value at all the pasting positions from the pasting start position (x = 0) to the pasting end position (x = W).
The speed ratio rω / V is tanφ as described above.

Therefore, tanφ is always substantially constant, that is, the inclination angle φ with respect to the axial direction of the sticking direction is always substantially constant.
Therefore, as shown in FIG. 5, when the inclination angle φ is substantially constant, the rubber strip portion 1 is affixed substantially linearly with a small bend.

If the movement in the axial direction is performed only by the drive mechanism by one servo motor, for example, when the movement is performed by only the servo motor 42, the axial direction in which the constant deceleration is indicated after the constant acceleration indicated by the one-dot chain line in FIG. The moving speed v ₁ becomes the axial direction pasting speed V, which is different from the change in the circumferential direction pasting speed rω shown in FIG. 6 (1), particularly in the vicinity of both ends, and therefore the speed ratio rω / V (= tanφ) is made substantially constant. This is impossible, and the rubber strip piece is bent and pasted as in the prior art by fluctuation of the inclination angle φ.

By making the axial direction moving speed v ₁ and the axial direction moving speed v ₂ overlap with each other by the double drive mechanism of the servo motor 42 and the servo motor 46, the inclination angle φ is substantially constant. Thus, the rubber strip portion 1 can be attached substantially linearly.

  In the developed view of the rubber strip piece 1 shown in FIG. 5, the central portion has a high peripheral speed, so that the width slightly extends in the circumferential direction, and the front side edge 1f and the rear side edge 1r in the rotational direction are slightly separated from each other. Although it is curved, the front side edge 1f and the rear side edge 1r have substantially the same shape in a state of being attached to the outer peripheral curved surface of the curved drum 5.

  Therefore, the front side edge 1f of the succeeding rubber strip piece 1 can be attached to the rear side edge 1r of the preceding rubber strip piece 1 that has been pasted, and the adjacent rubber strip parts can be attached. The rubber strip pieces 1 can be sequentially attached without generating gaps or excessive overlapping parts between the pieces, and when the curved strip 5 is attached over one turn, a high quality curved surface as shown in FIG. The belt member 2 can be manufactured.

  The curved drum 5 has a larger circumference at the center than the circumference at both sides, but as described above, the rubber strip piece 1 has a wider width in the circumferential direction at the center. As shown in FIG. 7, the rubber strip pieces 1 can be sequentially pasted without gaps in the central portion.

  Thus, since the rubber strip piece 1 is affixed sequentially adjacent to the front and rear rubber strip pieces 1 without any gap between the front end and the rear end, the belt member is manufactured. Thus, the tire can be manufactured without causing air to remain inside, and the quality of the product tire can be maintained high.

  In addition, this manufacturing apparatus of the tire strip member of the rubber strip part piece sticking device 10 and the curved drum 5 uses either of the magnetic drums 11 and 12, and can freely change the sticking direction and the inclination of the sticking direction. And versatility.

It is a side view which shows a part of curved surface drum and the whole rubber strip part sticking apparatus. It is a principal part front view of a rubber strip part piece sticking apparatus. It is a rear view of the principal part. It is a principal part side view which shows the transfer state from the magnet drum of a rubber strip piece to a curved surface drum. It is explanatory drawing which expanded and showed the rubber strip part affixed on the outer peripheral curved surface of the curved surface drum by this rubber strip part affixing apparatus. It is a coordinate which shows the change curve of the circumferential direction sticking speed and an axial direction sticking speed. It is a top view of the curved surface drum at the time of completion of a belt member. It is explanatory drawing which expand | deployed and showed the rubber strip piece affixed on the outer peripheral curved surface of the curved drum with the conventional sticking method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Rubber strip piece, 2 ... Belt member, 5 ... Curved surface drum, 6 ... Drum drive mechanism, 7 ... Servo motor,
10 ... Rubber strip piece sticking device, 11, 12 ... Magnetic drum, 13 ... Frame, 14,15 ... One-way clutch, 16,17 ... Servo motor, 18,19 ... Pressing roller, 20,21 ... Pressing roller, 22 , 23 ... Guide roller,
25 ... Slide rail, 26 ... Arc rail, 27 ... Vertical slider, 28 ... Rail, 30 ... Front / rear slide, 31 ... Rail, 32 ... Air cylinder, 35 ... Base, 36 ... Rail, 37 ... Air cylinder,
40 ... ball screw mechanism, 41 ... ball screw, 42 ... servo motor, 43 ... nut, 43g ... driven gear, 44 ... nut holder, 45 ... support member, 46 ... servo motor, 46g ... drive gear, 47 ... intermediate shaft, 47g ... Intermediate gear, 50 ... guide member, 51 ... rail, 52 ... sliding member, 53 ... magnet.

Claims (4)

While the strip-shaped rubber strip pieces are oriented obliquely on the rotating outer peripheral curved surface of the curved drum whose center is swollen from both sides, it is moved in the axial direction and attached in order from the tip to the rear end. In the method of manufacturing a tire component by affixing a plurality of rubber strip pieces by repeating this process while sequentially shifting the affixing position to
The rubber strip piece is attached to the outer peripheral curved surface of the curved drum so that the speed ratio between the circumferential application speed and the axial application speed of the rubber strip piece on the outer peripheral curved surface of the curved drum is always substantially constant. A method for manufacturing a tire constituent member. The circumferential direction pasting speed is set by angular speed control in which the curved drum is rotated at a constant angular acceleration and then decelerated at a constant angular deceleration.
At the same time, the axial movement by the speed control for constant acceleration after constant acceleration of the supply sticking position of the rubber strip piece is further overlapped with the axial movement by speed control that becomes a constant speed after another constant acceleration and then constant deceleration. The method for manufacturing a tire constituent member according to claim 1, wherein the direction sticking speed is used. A rotational drive mechanism that rotationally drives a curved drum having a central portion swelled from both sides;
A piece supplying and sticking means for supplying and sticking a belt-like rubber strip piece to the outer peripheral curved surface of the curved drum;
An axial movement mechanism for moving the supply sticking position of the piece supply sticking means in the axial direction along the outer peripheral curved surface of the curved drum, and directing the rubber strip piece obliquely on the outer peripheral curved surface rotated by the curved drum. In the tire constituent member manufacturing apparatus that manufactures the tire constituent member that is attached by moving in the axial direction while being supplied,
The axial direction so that the speed ratio between the circumferential application speed by rotation of the outer peripheral curved surface of the curved drum by the rotational drive mechanism and the axial application speed by movement of the supply application position by the axial movement mechanism is always substantially constant. An apparatus for manufacturing a tire constituent member, wherein the moving mechanism is composed of a multiple drive mechanism having a plurality of drive sources. The rotation drive mechanism is driven by one drum rotation motor,
The axial movement mechanism constitutes a ball screw mechanism and is driven by two motors, a screw rod rotating motor that rotates the screw rod and a nut rotating motor that rotates a nut screwed to the screw rod, and is driven in a double manner. The apparatus for manufacturing a tire constituent member according to claim 3, which constitutes a mechanism.

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