JP2628830B2 - Automatic bead feeder for tire building machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic bead supply device for a tire molding machine.

[0002]

2. Description of the Related Art As this kind of automatic bead supply apparatus, for example, one disclosed in Japanese Patent Application Laid-Open No. 57-32935 is known. In this conventional apparatus, a single bead applicator for automatically supplying beads to the setter is provided on one side of a tire forming machine having a pair of right and left bead setters so as to be movable in the front-rear and left-right directions. I was The bead applicator has a pair of left and right bead holding portions, and a pair of left and right bead stockers is provided facing the holding portions.

[0003] The operation of the conventional bead supply device is as follows. That is, a large number of beads are held in the left and right bead stockers, and the bead applicator in the standby position is moved, for example, to the right, the right bead stocker and the right bead holding portion are brought close to each other, and held by the bead stocker. Transfer the bead to the right bead holder. Next, the bead applicator is moved to the left, the left bead stocker and the left bead holding unit are brought close to each other, and the bead held by the bead stocker is delivered to the left bead holding unit.

After holding the beads in the left and right bead holders in this manner, the bead applicator returns to the center position in the left-right direction, and the center of the held bead and the center of the bead setter of the tire molding machine are moved. Advance the bead applicator until matches. Then, by moving the bead applicator to the right side, for example, the right bead holding portion and the right bead setter approach each other,
The bead of the bead holder is transferred to the right bead setter. Then move the bead applicator to the left,
The left bead holder and the left bead setter are brought closer to each other, and the beads of the bead holder are transferred to the left bead setter. Then, the bead applicator whose delivery has been completed returns to the original standby position.

[0005]

The above-mentioned conventional apparatus has one bead applicator, and moves the one bead applicator left, right, back and forth to receive a bead from a pair of right and left bead stockers, and Since the bead was delivered to a pair of bead setters, it took time to move and deliver the bead applicator, and productivity was just one step away.

Accordingly, an object of the present invention is to provide a bead automatic supply device in which the bead transfer time is reduced.

[0007]

Means for Solving the Problems In order to achieve the above object, the present invention takes the following measures. That is, the feature of the automatic bead supply device in the tire molding machine of the present invention is that a bead is supplied to the bead setter to one side in the front-rear direction orthogonal to the left-right direction of the tire molding machine having a pair of left and right bead setters. And a pair of left and right bead applicators are provided so as to be independently movable in the front-rear and left-right directions.

Further, according to the present invention, a pair of left and right bead holders for supplying a bead to the bead applicator is provided at a stroke end portion on a laterally outer side of the pair of left and right bead applicators. The holder is configured so that the position can be changed by 90 degrees in the front-rear direction from the left-right direction. A bead stocker holding a large number of beads for supplying beads to the bead holder faces the bead holder in the front-rear direction. It is provided movably.

[0010] A spacer take-out device for removing a spacer interposed between the beads held by the bead stocker is provided on one side of the bead stocker in the left-right direction.

[0010]

According to the present invention, the pair of right and left bead applicators can be independently moved in the front, rear, left and right directions.
The right bead applicator is for the right bead setter, and the left bead applicator is for the left bead setter.
It moves simultaneously and delivers the beads.

Therefore, according to the present invention, the working time is reduced by half as compared with the conventional one in which one bead applicator supplies beads to both the right and left bead setters.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3, a tire molding machine 1 and the molding machine 1
A bead automatic supply device 3 for automatically supplying a bead 2 is shown. The tire forming machine 1 includes a forming drum 4, a headstock 5 that rotationally drives the drum 4, and a tail that is disposed on the opposite side to the headstock 5 side via the forming drum 4 and that can move in the left-right direction. (Hereinafter referred to as “lateral direction”).
And the horizontal direction orthogonal to the axial direction is referred to as the “front-back direction”, and the direction is as shown in FIG. 1).

The forming drum 4 has a bladder (not shown) whose outer diameter is freely expandable and contractable and which can expand and contract on its outer peripheral surface. A belt-shaped tire constituent material (for example, a carcass ply or the like) supplied from a belt-shaped tire constituent material supply device (not shown, but arranged on the front side of the forming drum 4) is provided on the outer peripheral surface of the forming drum 4. ) To form a tubular body.

The tire forming machine 1 includes the above-mentioned forming drum.
4 has a pair of right and left bead setters 7 for fitting steel ring-shaped beads 2 to both left and right ends of a cylindrical body wound and formed. The bead setter 7 detachably holds the ring-shaped bead 2 concentrically with the axis of the forming drum 4 and is movable in the left-right direction.

After the bead setter 7 fits the beads 2 to both ends of the cylindrical body on the forming drum 4 by the bead setter 7, the bladder of the forming drum 4 is expanded and pushed by a pusher ring. The tubular body is formed into a 1ST (fast) governor. The bead automatic supply device 3 is arranged on the rear side of the tire forming machine 1 and automatically supplies the bead 2 to the bead setter 7.

The automatic bead supply device 3 includes a pair of right and left bead applicators 8, a pair of right and left bead holders 9 arranged at positions (stroke end positions) laterally outward of the bead applicator 8, and the respective bead holders. 9, a bead stocker 10 arranged at the rear of each, and a spacer take-out device 11 and a spacer stocker 12 arranged at the outside of each bead stocker 10 in the left-right direction.

The left and right components of the automatic bead supply device 3 are symmetrical, and the left and right components are independently controlled. The bead applicator 8 is provided with a first rail 13 laid in the left-right direction, a carriage 14 movable on the first rail 13 in the left-right direction, and laid on the carriage 14 in the front-rear direction. The second rail 15
And a stand which is movable on the second rail 15 in the front-rear direction.
16 and a ring-shaped bead holder 17 provided on the top of the stand 16.

The carriage 14 is provided with a driving device 18 for moving the carriage 14 along the first rail 13, and the stand 16 is connected to the second rail 15.
There is provided a driving device 19 for moving along. These driving devices 18 and 19 are constituted by cylinders or motors. The bead holding portion 17 is configured such that the diameter of the outer peripheral surface thereof is freely expandable and contractable, and
It is configured to detachably hold the inner peripheral surface of the.

In the bead applicator 8, when the stand 16 is moved forward on the second rail 15, the axis of the bead holding portion 17 is aligned with the axis of the bead setter 7 of the tire forming machine 1. They are arranged to match. Outside the left and right ends of the first rail 13, third rails 20 are laid along the front-rear direction. The bead holder 9 is disposed at a front end position of the third rail 20. The stand 16 of the bead applicator 8 is connected to the second
The bead holding portion 17 and the bead holder 9 are arranged so as to face in the left-right direction at the retreat position after moving backward on the rail 15.

The bead stocker 10 is provided on the third rail 20 so as to be movable in the front-rear direction. Further, the spacer removing device 11 is disposed outside the third rail 20 in the left-right direction, behind the bead holder 9 and in front of the bead stocker 10. The spacer stocker 12 is disposed behind the spacer removing device 11.

As shown in FIG. 4, the bead stocker 10
Is a truck 21 movable on the third rail 20 in the front-rear direction.
Having. A drive motor 22 and a motor 22
And a pinion 23 driven by the motor. The pinion 23 meshes with a rack 24 provided in parallel with the third rail 20. A pole 25 is fixed on the carriage 21 so as to protrude upward. Sleeve 26 on this pole 25
Are rotatably fitted to the outside. A bead holding bar 27 is provided on the sleeve 26 so as to protrude in the horizontal direction. This bar 27
A large number of ring-shaped beads 2 are hung on the ceiling.

The bead 2 is formed by coating the surface of a steel wiring with raw rubber. A spacer 28 is interposed between the beads 2 suspended from the bar 27 to prevent the rubber of the beads 2 from being in close contact with each other and joined. A bracket 29 protrudes horizontally from a pole fixing portion of the carriage 21. Two engaging holes 30 are vertically formed in the bracket 29 so as to be 90 degrees apart in the front-rear direction and the left-right direction. The sleeve 26 has a stopper 31 which is selectively engaged with one of the engagement holes 30.
Are provided movably in the vertical direction, and a spring 32 for urging the stopper 31 downward is provided.

When the stopper 31 is engaged with one engagement hole 30, the bead holding bar 27 is oriented in the front-rear direction, and the stopper 31 is moved upward against the spring 32. When the engagement with the one engagement hole 30 is released, and after the sleeve 26 is rotated by 90 degrees, the stopper 31 is engaged with the other engagement hole 30, the bead holding bar 27 is It is configured to point in the left-right direction.

That is, the bead 2 and the spacer 28 are inserted and held from the tip side of the bar 27 in a state where the bead holding bar 27 is oriented in the left-right direction as shown by the imaginary line on the right side of FIG. The position of the bar 27 is changed by 90 degrees to fix the bar 27 in the front-rear direction. FIG.
As shown in FIG. 6, the bead holder 9 has a frame 33 fixed to the floor, and the frame 33 has a frame 34 whose position can be freely changed by 90 degrees in the front-rear direction and the left-right direction. That is, a support shaft 35 is rotatably supported on the gantry 33 about the vertical axis, and the frame 34 is fixed to the support shaft 35. An arm 36 is fixed to the support shaft 35, and the arm 36 and the gantry 33 are connected by a telescopic cylinder 37. By expanding and contracting the cylinder 37, the frame 34
Is changeable by 90 degrees between the front-rear direction position and the left-right direction position.

A center pole 38 is erected on the frame 34, a cross bar 39 is fixed to the center pole 38 in an orthogonal manner, and bead suction portions 40 are provided at both ends of the cross bar 39. As shown in FIGS. 7 and 8, the bead suction portion 40 has a pair of upper and lower arms 41 pivotally supported on both ends of the cross bar 39 so as to be vertically swingable.
Can be changed and fixed freely. Each arm
A pad 42 is held at the tip of 41 so as to be movable in the horizontal direction. A magnet is embedded in the tip of the pad 42, and a spring 43 for urging the pad 42 toward the tip is provided. Bead by the magnet
The second end face is attracted to the pad.

When the posture of the bead holder 9 is changed so that the frame 34 faces in the front-rear direction by extending the cylinder 37, as shown in the left side of FIG. 7 and FIG.
Of the bead 2 held by the bead stocker 10
When the attitude of the frame 34 is changed to face the left and right directions by reducing the cylinder 37 so as to face the end face of the bead applicator 8 in the retracted position, as shown on the right side of FIG. Are arranged to face each other.

As shown in FIG. 9, a bead holding portion 17 of the bead applicator 8 is
It has segments 44 arranged in a ring shape at equal intervals in the circumferential direction. Each segment 44 is guided by a guide 45 so as to be movable in the radial direction, and engages with the inner peripheral surface of the bead 2 in a detachable manner. Each segment 44 is provided with a cam follower 46.

The bead applicator 8 is provided with a drive for moving the segment 44 in the radial direction. The driving device includes a ring gear 47, a pinion 48 that meshes with the ring gear 47, and an air motor 49 (see FIG. 2) that drives the pinion 48. The ring gear 47 is rotatably supported by the tip of the stand 16. A cam groove 50 corresponding to each of the segments 44 is formed in the end face of the ring gear 47. The cam follower 46 of the segment 44 is engaged with the cam groove 50.

The ring gear is driven by the air motor 49.
By rotating the 47 by a predetermined amount, the segment 44 moves in the radial direction, and the outer diameter of the segment 44 can be freely enlarged and reduced. Figure 10
FIG. 12 shows details of the spacer removing device 11. The spacer removal device 11 is a gantry fixed to the floor
Has 51. A pair of left and right support shafts 52 are arranged on the top of the gantry 51 in parallel with a longitudinal axis. A pair of parallel links 53 are pivotally supported by the pair of left and right support shafts 52 so as to be swingable in the left and right directions. At the upper end of the parallel link 53, a rod 54 parallel to the support shaft 52 is provided so as not to be relatively movable in the axial direction. The front and rear legs of a U-shaped bucket 55 are fixed to the rod 54.

An extendable cylinder 56 is interposed between the middle part of the parallel link 53 and the gantry 51. The parallel link 53 is swingable in the left-right direction by the expansion and contraction operation of the cylinder 56. Arm on the pair of left and right rods 54
57 is provided movably in the front-rear direction. This arm 57
A telescopic cylinder 58 is interposed between the bracket 55 and the bracket 55. By the expansion and contraction operation of the cylinder 58, the arm 57 is movable in the front-rear direction.

A suction pad 59 is provided at the end of the arm 57 so as to be movable in the front-rear direction. Further, a spring 60 for urging the pad 59 rearward is provided.
The pad 59 faces the end face of the spacer 28 held by the bead stocker 10 when the parallel link 53 is swung toward the third rail 20 (see the right side of FIG. 1), and in the opposite direction. When it is swung, it is arranged so as to correspond to the spacer stocker 12 (see the left side of FIG. 1).

As shown in FIG. 3, the spacer stocker 12 comprises a stand 61 erected on the floor,
61 has a rod member 62 provided in an inclined manner. The spacer 28 adsorbed on the suction pad 59 of the spacer take-out device 11 is inserted into the rod member 62. Hereinafter, the operation of the embodiment of the present invention having the above configuration will be described.

The components arranged on the left and right of the automatic bead supply device 3 make the same movement symmetrically.
1 will be described. First, the bead stocker 10 is held at the retracted position, and the bead holding bar 27 is
Change the position and direct outward in the left and right direction. And
A large number of beads 2 and spacers 28 are alternately inserted and held from the tip side of the bar 27. Then, the bead holding bar 27
Is changed by 90 degrees, and the front is fixed in the front-rear direction.

In the bead holder 9, the posture is changed so that the bead suction portion 40 faces rearward. The bead stocker 10 is advanced along the third rail 20. When a large number of beads 2 held by the bead holding bar 27 come into contact with the pads 42 of the bead suction section 40 of the bead holder 9, the advancement of the bead stocker 10 is stopped. The magnet of the pad 42 attracts the bead 2 at the front end.

When the bead stocker 10 is retracted, the bead 2 at the forefront end is attracted to the pad 42 and remains on the bead holder 9 side, and the other beads 2 and the spacer 28 retract with the bead stocker 10 and stop at the retracted position. I do. The parallel link 53 of the spacer removing device 11 is swung so that the suction pad 59 at the tip thereof faces the spacer 28. When the bead stocker 10 is moved forward and the frontmost spacer 28 abuts on the suction pad 59, the bead stocker 10 is stopped. Then, the spacer 28 is suctioned by the suction pad 59 by vacuum. When the bead stocker 10 is retracted, the spacer 28 at the forefront end is attracted to the pad 59 and remains on the spacer extracting device 11 side, and the other beads 2 and the spacer 28 are removed from the bead stocker.
Retracts to the retreat position with 10.

The parallel link 53 of the spacer take-out device 11 is swung in the opposite direction to that described above, so that the spacer
28 faces the rod member 62 of the spacer stocker 12. Then, after the cylinder 58 is extended and the spacer 28 is inserted through the rod member 62, compressed air is sent to the pad 59, the spacer 28 is separated from the pad 59 by air blow, and the spacer 28 is delivered to the rod member 62.

The bead holder 9, which has received the bead 2 from the bead stocker 10, extends its cylinder 37 to change the position of the frame 34 by 90 degrees, so that the bead suction portion
The bead 2 adsorbed by the adsorbing section 40 is oriented in the left-right direction.
Face the bead holding portion 17 of the bead applicator 8. The carriage 14 of the bead applicator 8 is the first rail
13 to the right, and the bead holding portion 17 of the bead applicator 8 is moved to the bead 2 held by the bead holder 9.
The movement of the carriage 14 stops at a position where the carriage 14 has entered the inner peripheral surface of the carriage. Then, the segment 44 of the bead holding portion 17 is moved in the radially outward direction to engage with the inner peripheral surface of the bead 2.

Thereafter, the carriage 14 is moved leftward and stopped at the center position. At this time, Bead 2
Since the inner peripheral surface is held by the segment 44 of the bead holder 17, the bead holder 9 separates from the magnet of the suction part 40 and moves together with the bead holder 17. Then, the stand 16 of the bead applicator 8 is moved to the second rail 15
, The movement of the stand 16 is stopped at a position where the center of the bead holding unit 17 and the center of the bead setter 7 of the tire forming machine 1 coincide with each other. Then, the carriage 14 is moved rightward along the first rail 13 so that the bead 2 held by the bead holding unit 17 is brought into contact with the right bead setter 7.

Since the bead setter 7 has a magnet for attracting beads, when the diameter of the segment 44 of the bead holding portion 17 is reduced and the engagement with the inner peripheral surface of the bead 2 is released, the bead 2 is received by the setter 7. Passed. Thereafter, the carriage 14 of the bead applicator 8 is moved to the left, and the stand 16 is retracted to stop at the standby position at the center position.

The above is the operation of each component on the right side.
The left side is the same, and the left and right sides are independently movable. Therefore, according to the above-described embodiment, the operation time for transferring the beads is reduced by half as compared with the case of using one conventional applicator. The present invention is not limited to the above embodiment.

[0041]

According to the present invention, a pair of right and left bead applicators can be moved independently in the forward, backward, left and right directions, so that the right bead applicator is used for the right bead setter, and the left bead applicator is used for the right bead applicator. For the left bead setter, move simultaneously to deliver the bead.

Therefore, according to the present invention, the working time is reduced by half as compared with the prior art in which one bead applicator supplies beads to both the left and right bead setters.

[Brief description of the drawings]

FIG. 1 is a plan layout view showing an embodiment of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a left side view of FIG.

FIG. 4 is a partial cross-sectional side view of a bead stocker.

FIG. 5 is a plan view of a bead holder.

FIG. 6 is a partial cross-sectional side view of a bead holder.

FIG. 7 is a front view of a bead suction portion of the bead holder.

FIG. 8 is a side view of a bead suction portion of the bead holder.

FIG. 9 is an explanatory view of a bead holding portion of the bead applicator.

FIG. 10 is a front view of the spacer removing device.

FIG. 11 is a side view showing a main part of the spacer removing device.

FIG. 12 is a plan view showing a main part of the spacer removing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tire molding machine 2 Bead 7 Bead setter 8 Bead applicator 9 Bead holder 10 Bead stocker 11 Spacer removal device 28 Spacer

Claims (3)

(57) [Claims] 1. A pair of left and right bead applicators for supplying beads to the bead setter are provided on one side in a front-rear direction orthogonal to the left-right direction of a tire molding machine having a pair of right and left bead setters. An automatic bead supply device for a tire forming machine, which is provided so as to be independently movable. 2. The bead automatic supply device according to claim 1, wherein a pair of left and right bead holders for supplying a bead to the bead applicator is provided at a stroke outer end of the pair of left and right bead applicators in the left and right direction. The bead holder is configured to be capable of changing its position by 90 degrees in the front-rear direction from the left-right direction, and a bead stocker holding a large number of beads for supplying beads to the bead holder faces the bead holder in the front-rear direction. And a bead automatic supply device in a tire forming machine, which is provided so as to be movable in the front-rear direction. 3. The bead automatic supply device according to claim 2, wherein a spacer removal device for removing a bead held by the bead stocker and a spacer interposed between the beads is provided in one of the right and left directions of the bead stocker. An automatic bead supply device in a tire forming machine, which is provided on a side.