JPH06316002A - Automatic bead supplying device for tire molding machine - Google Patents

Abstract

PURPOSE:To move a pair of right-and-left bead applicators simultaneously to bead setters so as to shorten a time to be taken for moving and laying a bead by moving the right-and-left bead applicators in an automatic bead supplying device back and forth and right and left independently each other. CONSTITUTION:In a tire molding machine 1, a molding drum 4 is driven to rotate by a head stock 5 and a tail stock 6 is arranged movably right and left at opposite side of it. In an automatic bead supplying device 3 for automatically supplying a bead 2 to a tire molding machine 1, a pair of right-and-left bead holders 9 are arranged at the outer right and left sides of a pair of right- and-left applicators 8. At outer right and left of bead stockers 10 arranged at the back of these, take-out devices 11 and stockers 12 of spacers 28 are arranged respectively. The bead applicators 8 are respectively moved back and forth and right and left along rails 13 and 15 independently each other by driving devices 18 and 19.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art An automatic bead feeder of this type is known, for example, from JP-A-57-32935. In this conventional type, a single bead applicator for automatically supplying a bead to the setter is provided on one side of a tire molding machine having a pair of left and right bead setters so as to be movable back and forth and left and right. Was there. The bead applicator has a pair of left and right bead holders, and a pair of left and right bead stockers are provided facing the holders.

The operation of the conventional bead feeder is as follows. That is, holding a large number of beads in the left and right bead stockers, and moving the bead applicator at the standby position to the right, for example, to bring the right bead stocker and the right bead holder into close proximity and be held by the bead stocker. The bead on the right bead holder. Next, the bead applicator is moved to the left, the left bead stocker and the left bead holder are brought close to each other, and the beads held by the bead stocker are transferred to the left bead holder.

After the beads are held in the left and right bead holding portions in this way, 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 set. Advance the bead applicator until they match. Then, for example, by moving the bead applicator to the right side, the bead holder on the right side and the bead setter on the right side are brought close to each other,
The beads of the bead holder are 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 close to each other, and the bead of the bead holder is transferred to the left bead setter. Then, the bead applicator having completed the delivery returns to the original standby position.

[0005]

The above-mentioned conventional one has only one bead applicator, and the one bead applicator is moved to the left and right to the front and back to receive the beads from the pair of left and right bead stockers, and also to the left and right. Since the beads were delivered to the pair of beads setters, it took a long time to move and deliver the bead applicator, and the productivity was one step further.

Therefore, an object of the present invention is to provide an automatic bead feeder which shortens the bead transfer time.

[0007]

In order to achieve the above object, the present invention takes the following means. That is, the feature of the bead automatic supply device in the tire molding machine of the present invention is that the beads are supplied to the bead setter on 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. 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 are provided at stroke ends of the pair of left and right bead applicators in the left and right direction, and the bead holder is provided. The holder is configured to be capable of changing the position by 90 degrees in the front-rear direction from the left-right direction, and a bead stocker that holds a large number of beads to supply the beads to the bead holder faces the bead holder in the front-rear direction and moves in the front-rear direction. It is provided to be movable.

Further, a spacer take-out device for removing the spacers 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, since the pair of left and right bead applicators can be independently moved in the front-rear direction and the left-right direction,
The right bead applicator is for the right bead setter and the left bead applicator is for the left bead setter.
Move at the same time to deliver beads.

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

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3, the tire molding machine 1 and the molding machine 1
An automatic bead feeder 3, which automatically feeds beads 2, is shown in FIG. The tire molding machine 1 includes a molding drum 4, a headstock 5 that drives the drum 4 to rotate, and a tail that is arranged on the side opposite to the headstock 5 side via the molding drum 4 and is movable in the left-right direction. Stock 6 and (hereinafter, the axial direction of the molding drum 4 is "left-right direction").
That is, the horizontal direction orthogonal to the axial direction is called the "front-back direction", and the direction is as shown in FIG.

The molding drum 4 has an outer diameter that can be expanded and contracted, and an expansion and contraction bladder (not shown) on the outer peripheral surface thereof. Then, a belt-shaped tire constituent material (for example, a carcass ply, etc.) supplied from a belt-shaped tire constituent material supply device (not shown, but arranged on the front side of the molding drum 4) is provided on the outer peripheral surface of the molding drum 4. ) Is wound to form a tubular body.

The tire molding machine 1 includes the molding drum
A pair of left and right bead setters 7 for fitting steel ring-shaped beads 2 to the left and right ends of a tubular body wound around 4. The bead setter 7 detachably holds the ring-shaped bead 2 concentrically with the axis of the molding drum 4 and is movable in the left-right direction.

Then, the tire molding machine 1 fits the beads 2 to both ends of the cylindrical body on the molding drum 4 by the bead setter 7, then inflates the bladder of the molding drum 4 and pushes it with a pusher ring, The tubular body is formed into a 1ST (first) gover. The bead automatic supply device 3 is arranged on the rear side of the tire building machine 1 and automatically supplies the bead 2 to the bead setter 7.

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

The left and right constituent members of the automatic bead feeder 3 are symmetrically configured, and the left and right constituent members are independently controlled. The bead applicator 8 includes 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 a carriage 14 laid on the carriage 14 in the front-back direction. 2nd rail 15
And a stand that can be moved back and forth on the second rail 15.
The stand 16 has a ring-shaped bead holder 17 provided on the top of the stand 16.

The carriage 14 is provided with a drive device 18 for moving the carriage 14 along the first rail 13, and the stand 16 is provided with the stand 16 and the second rail 15.
A drive device 19 is provided for moving along. These drive devices 18 and 19 are composed of cylinders or motors. The bead holding portion 17 is configured such that the diameter of the outer peripheral surface of the bead holding portion 17 can be freely expanded and contracted, and the bead holding portion 2 has a ring shape.
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 bead holder 17 has an axis centered on the bead setter 7 of the tire building machine 1. It is arranged to match. Third rails 20 are laid outside the left and right ends of the first rail 13 along the front-rear direction. The bead holder 9 is arranged at the front end position of the third rail 20. Then, the stand 16 of the bead applicator 8 has the second
The bead holding portion 17 and the bead holder 9 are arranged so as to face each other in the left-right direction at the retracted 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 take-out device 11 is arranged 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 arranged behind the spacer take-out device 11.

As shown in FIG. 4, the bead stocker 10 is used.
Is a carriage 21 that is movable in the front-rear direction on the third rail 20.
Have. A drive motor 22 and the motor 22 are attached to the carriage 21.
And a pinion 23 driven by. 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 project upward. This pole 25 has a sleeve 26
Is rotatably fitted on the outside. A bead holding bar 27 is provided on the sleeve 26 so as to project in the horizontal direction. This bar 27
A large number of ring-shaped beads 2 are suspended.

The beads 2 are formed by coating the surface of steel wiring with raw rubber. A spacer 28 is interposed between the bead 2 and the bead 2 suspended from the bar 27 to prevent the rubbers of the bead 2 from sticking to each other and joining. A bracket 29 is horizontally projectingly provided on the pole fixing portion of the carriage 21. Two engaging holes 30 are vertically formed through the bracket 29 with a space of 90 degrees in the front-rear direction and the left-right direction. The sleeve 26 has a stopper 31 that selectively engages with one of the engagement holes 30.
Is provided so as to be movable 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 the sleeve 26 is rotated 90 degrees and then the stopper 31 is engaged with the other engagement hole 30, the bead holding bar 27 is released. It is configured to point in the left-right direction.

That is, the bead holding bar 27 is inserted and held from the tip end side of the bar 27 with the bead 2 and the spacer 28 inserted and held in a state of being oriented in the left-right direction as shown by the phantom line on the right side of FIG. Then, the position is changed by 90 degrees, and the bar 27 is fixed in the front-rear direction. Figure 5,
As shown in FIG. 6, the bead holder 9 has a pedestal 33 fixed to the floor, and the pedestal 33 has a frame 34 whose position can be changed 90 degrees in the front-rear direction and the left-right direction. That is, a support shaft 35 is supported on the pedestal 33 so as to be rotatable about a vertical axis, and a 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 pedestal 33 are connected by a telescopic cylinder 37. By expanding and contracting this cylinder 37, the frame 34
The position can be changed by 90 degrees between the front-back 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 a bead suction portion 40 is 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 at both ends of the crossbar 39 so as to be swingable in the vertical direction.
The intersection angle of can be changed and fixed. Each arm
A pad 42 is held at the tip of 41 so as to be horizontally movable. A magnet is embedded in the tip portion of the pad 42, and a spring 43 that biases the pad 42 in the tip direction is provided. Bead by the magnet
The second end face is adsorbed to the pad 42.

The bead holder 9 has a bead suction portion 40 as shown on the left side of FIGS.
The pad 42 of the bead 2 held by the bead stocker 10.
When the posture of the bead holder 17 of the bead applicator 8 in the retracted position is changed as shown in the right side of FIG. Are arranged to face each other.

As shown in FIG. 9, the bead holding portion 17 of the bead applicator 8 is provided at the tip of the stand 16.
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 disengageable manner. A cam follower 46 is provided in each segment 44.

The bead applicator 8 is provided with a drive device for moving the segment 44 in the radial direction. The drive 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 on 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.
The segment 44 is moved in the radial direction by rotating the 47 by a predetermined amount, and the outer diameter of the segment 44 can be expanded and contracted. Figure 10
At 12, the details of the spacer take-out device 11 are shown. The spacer take-out device 11 is a stand fixed to the floor.
Having 51. A pair of left and right support shafts 52 are arranged in parallel with each other on the top portion of the pedestal 51 with a longitudinal center axis. A pair of parallel links 53 are pivotally supported on 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 move relative to the axial direction. To this rod 54, the front and rear legs of a U-shaped bucket 55 are fixed.

An extendable cylinder 56 is interposed between the midway portion of the parallel link 53 and the gantry 51. By the expansion and contraction operation of the cylinder 56, the parallel link 53 can swing in the left and right directions. The pair of left and right rods 54 has an arm
57 is provided so as to be movable in the front-rear direction. This arm 57
An expandable cylinder 58 is interposed between the bracket 55 and the bracket 55. The arm 57 is movable in the front-rear direction by the expansion and contraction operation of the cylinder 58.

A suction pad 59 is provided at the tip of the arm 57 so as to be movable in the front-rear direction. And, a spring 60 for urging the pad 59 backward is provided.
The pad 59 faces the end surface of the spacer 28 held by the bead stocker 10 when the parallel link 53 is swung to the side of the third rail 20 (see the right side of FIG. 1), and in the opposite direction. When rocked, 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 includes a stand 61 that is erected on the floor and a stand 61.
61 and a rod member 62 provided in an inclined shape. The spacer 28 attracted to the suction pad 59 of the spacer take-out device 11 is inserted into the rod member 62. The operation of the embodiment of the present invention having the above configuration will be described below.

Since the respective constituent members arranged on the left and right of the automatic bead feeder 3 move symmetrically in the same manner,
The right side of FIG. 1 will be described. First, hold the bead stocker 10 in the retracted position, and set the bead holding bar 27 to 90
Change the position and point to the left and right. 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
By changing the position by 90 degrees and fixing it by pointing the front in the front-rear direction.

In the bead holder 9, the attitude is changed so that the bead suction portion 40 faces rearward. The bead stocker 10 is advanced along the third rail 20. When the front ends of the many beads 2 held by the bead holding bar 27 come into contact with the pads 42 of the bead suction portion 40 of the bead holder 9, the advance 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 foremost end is adsorbed by the pad 42 and remains on the bead holder 9 side, and the other beads 2 and the spacer 28 are retracted together with the bead stocker 10 and stopped at the retracted position. To do. The parallel link 53 of the spacer take-out device 11 is swung to make the suction pad 59 at the tip end face the spacer 28. When the bead stocker 10 is advanced and the frontmost spacer 28 comes into contact with the suction pad 59, the bead stocker 10 is stopped. Then, the suction pad 59 sucks the spacer 28 by vacuum. Then, when the bead stocker 10 is retracted, the spacer 28 at the foremost end is adsorbed by the pad 59 and remains on the spacer take-out device 11 side, and the other beads 2 and the spacer 28 are bead stocker.
Retract with 10 to the retracted position.

The spacer 53 attracted to the pad 59 by swinging the parallel link 53 of the spacer take-out device 11 in the opposite direction to the above.
28 is opposed to the rod member 62 of the spacer stocker 12. Then, after extending the cylinder 58 to insert the spacer 28 into the rod member 62, compressed air is sent to the pad 59 to separate the spacer 28 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 the cylinder 37 of the bead holder 9 to change the position of the frame 34 by 90 degrees, and the bead suction portion.
The bead 2 adsorbed to the adsorbing part 40 with 40 oriented in the left-right direction.
Face the bead holder 17 of the bead applicator 8. The carriage 14 of the bead applicator 8 is the first rail
13 is moved to the right and the bead holder 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 enters the inner peripheral surface of the carriage. Then, the segment 44 of the bead holding portion 17 is moved radially outward to be engaged with the inner peripheral surface of the bead 2.

Then, the carriage 14 is moved leftward and stopped at the center position. At this time, bead 2
Since the inner peripheral surface of the bead holding portion 17 is held by the segment 44, the bead holding portion 17 moves away from the magnet of the attraction portion 40 of the bead holder 9 and moves together with the bead holding portion 17. Then, attach the stand 16 of the bead applicator 8 to the second rail 15
And moves the stand 16 at a position where the center of the bead holder 17 and the center of the bead setter 7 of the tire building machine 1 coincide with each other. Then, the carriage 14 is moved rightward along the first rail 13 to bring the bead 2 held by the bead holding portion 17 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 holder 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. After that, the carriage 14 of the bead applicator 8 is moved to the left side, and the stand 16 is retracted and stopped at the standby position of the center position.

The above is the operation of each component on the right side.
The left one is the same, and the left and right ones are independently movable. Therefore, according to the above-described embodiment, the bead transfer operation time is halved as compared with the conventional single applicator. The present invention is not limited to the above embodiment.

[0041]

According to the present invention, since the pair of left and right bead applicators can independently move in the front-back and left-right directions, the right bead applicator is for the right bead setter, and the left bead applicator is For the left bead setter, move simultaneously to deliver the bead.

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

[Brief description of drawings]

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

FIG. 2 is a right side surface of FIG.

FIG. 3 is a left side view of FIG.

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

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

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

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

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

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

FIG. 10 is a front view of the spacer take-out device.

FIG. 11 is a side view showing a main part of the spacer take-out device.

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

[Explanation of symbols]

 1 Tire Forming Machine 2 Bead 7 Bead Setter 8 Bead Applicator 9 Bead Holder 10 Bead Stocker 11 Spacer Extractor 28 Spacer

Claims (3)

[Claims] 1. A pair of left and right bead applicators for supplying a bead to the bead setter is provided in one side of the tire forming machine having a pair of left and right bead setters in a front and rear direction orthogonal to the left and right direction. An automatic bead feeder in 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 are provided at left and right outer stroke ends of the pair of left and right bead applicators. 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 that holds a large number of beads to supply the bead to the bead holder faces the bead holder in the front-rear direction. Then, the bead automatic supply device for a tire molding machine 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 take-out device for removing a spacer interposed between the bead held by the bead stocker and a bead stocker is located in one of the left and right directions of the bead stocker. An automatic bead supply device for a tire molding machine, which is provided laterally.