JP2628825B2 - Material seam adjusting piece removing device in tire building machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire forming machine which cuts a belt-shaped material for tire construction (hereinafter simply referred to as "material") into a fixed size, attaches it to a tire forming drum and forms it into a cylindrical shape. The present invention relates to an apparatus for automatically removing an adjustment piece cut for position adjustment of a bias joint).

[0002]

2. Description of the Related Art In a tire forming process, a long material (for example, a bias cord ply) fed out from a lower portion is conveyed on a conveyor of a material supply device (hereinafter, referred to as a servicer) installed in close proximity to a tire forming drum. After being cut to a length equal to or more than one round of the drum in advance, the sized material is supplied to the forming drum from a direction perpendicular to the axis of the forming drum by a supply conveyor in which the peripheral speed and the moving speed of the forming drum are synchronized. In general, a molding method of sticking is used.

[0003] The above-mentioned material, particularly the bias cord ply, is a ply obtained by cutting a wide sheet of raw material at a predetermined width and at an angle, and joining them together in a cut cross section to form a long belt-like shape. And rolled into a stock roll. Therefore, when the material is cut to a fixed size by a cutter, a joint (bias joint) may be located at an end of the fixed-size material.

Conventionally, when a seam is located at an end portion of a sizing material, when the seam is attached to a tire forming drum, a lap joint portion protrudes abnormally, and when the tire is inflated, a swelling portion is deformed unevenly and uneven wear and the like are caused. In order to cause undesired phenomena such as occurring, a seam portion is detected at the time of cutting the material in a fixed size, and when this is located at the end of the fixed size material, the seam and the like are partially cut and removed and adjusted. (For example, JP-A-56-11
No. 1660).

[0005]

In the prior art, a short adjustment piece cut for adjusting the position of a material seam is fed and discarded below a tire forming drum by a supply conveyor to the tire forming drum. Or the material is lengthened by a certain length and then manually removed after pasting, so that the next operation cannot be performed until the adjustment piece is sent and discarded, and there is a problem in workability.

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and an object of the present invention is to transfer a cut short material seam adjusting piece from a cutter table to a transfer conveyor path without using an immediate conveyor. It is an object of the present invention to provide a material seam adjusting piece removing device in a tire molding machine which can be carried out to improve the workability and efficiency of fixed-size cutting.

[0007]

According to the present invention, the following technical measures have been taken in order to achieve the above object. That is, according to the present invention, a belt-shaped material for tire construction wound in a roll is fed out onto a transfer conveyor, cut into a predetermined length by a fixed-size cutter, and the fixed-size material is placed on a tire forming drum along with its axis. It is supplied by a supply conveyor from an orthogonal direction and is automatically pasted and formed.A material seam detecting means is provided in front of the cutter, and when the material seam is positioned at the fixed size material end, the material tip is set to a predetermined length. In a tire forming machine configured to cut and adjust a position of a material seam, a support frame provided so as to straddle a transfer conveyor in the vicinity of the fixed-size cutter, and a lifting / lowering body provided to be vertically movable on the frame. And a material seam adjusting piece holding member provided on the elevating body so as to be movable substantially in parallel with the upper surface of the conveyor, and the material seam adjusting piece cut by the fixed-size cutter is placed on a cutter table. It is characterized in that so as to discharge outside the transport conveyor path.

[0008]

According to the present invention, the short material seam adjustment piece on the cutter table cut by the fixed-size cutter is held by the holding member that has entered immediately above the piece, and is then unloaded from the cutter table. At the same time, it is immediately carried out of the transfer conveyor path by the lift of the elevating body, and is separated from the holding member at a predetermined place and dropped and removed. Therefore, the standby time is short, and the next length measurement and fixed-size cutting operation can be started immediately.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view of a tire forming machine adopting the present invention. Reference numeral 1 denotes a material supply device (hereinafter referred to as a servicer), which is installed on the rear side of a tire forming drum 2 and has a material transfer conveyor 3 on an upper portion. , 4, 5 are provided in three stages of upper, middle and lower, and a common supply conveyor 6 is provided between each of the conveyors 3 to 5 and the drum 2, and roll support means 7, 8,
9, roll-shaped materials 10, 11, and 12 rotatably mounted are arranged.

The transfer conveyors 3 and 4 are provided with a first conveyor 3.
A, 4A and second conveyors 3B, 4B, and the second conveyor 3B,
4B is provided with driving means (not shown) so that it can be operated independently, and the first and second conveyors 3A, 3B, 4A and 4B are connected by interlocking means with clutch which can be disengaged (not shown). The cutter tables 13, 14 are disposed between the first and second conveyors 3A, 3B, 4A, 4B, and fixed-size cutters 15, 16 as material cutting means are disposed at the upper portions thereof.

The transfer conveyor 5 and the supply conveyor 6 include:
Driving means arranged in series on the same plane
(Not shown) to enable independent operation.
A cutter table 17 is provided therebetween, and a fixed-size cutter 18 is provided above the cutter table 17. In addition, cutter base 1
The conventional cutters 3, 14, 17 and the fixed-size cutters 15, 16, 18 are not described here.

Each of the first conveyors 3A, 4A and the transfer conveyor 5
On the top are the measuring rolls 19 and 2 that are the material length measuring means.
0,21 (for example, using a urethane roll) is provided so as to be able to move up and down, and a material seam detecting means (for example, a sensor such as a limit switch or a thickness gauge for a dial gauge).
22 are arranged. The middle and lower transfer conveyors 4A, 5A
In FIG. 7, the material seam detecting means 22 is not shown.

The measuring rolls 19 to 21 and the material seam detecting means 22 are capable of coming into contact with and separating from each of the materials 10 to 12, and the amount of movement of each of the materials 10 to 12, ie, the length and the material seam. (B) (see Fig. 2) can be measured and detected accurately,
In addition, the joint position is controlled by cooperation so that the set value of the material fixed size, that is, the fixed size cutting position and the adjustment piece cutting position can be reliably grasped.

That is, the material joint (a) is shown in FIG.
(B) As shown in FIG.
Material within the specified range (for example, within 50 mm) before and after
1212 are cut by a predetermined amount (for example, 60 mm), and control is performed so that a material seam (a) does not exist within a predetermined range (at least within 50 mm) from both front and rear ends of the cut sized material.
The second conveyor 3 is located near the cutter tables 13, 14, 17.
B, 4B side, cut material seam adjustment piece (b)
The device 23 of the present invention for removing the water is provided.

The supply conveyor 6 is arranged orthogonal to the axis of the drum 2 and has a leading end close to the upper part of the drum 2. A front end of the supply conveyor 6 presses the material against the drum 2. A roller 24 and a rear roller 25 for pressing the material against the upper surface of the front end of the supply conveyor 6 are provided, and further, a centering sensor 26 and the like are provided. As shown in FIGS. 3 to 5, the embodiment apparatus 23 of the present invention
A support frame 27 provided so as to straddle the transfer conveyors 3, 4, 5 near the sections 5, 16, 18;
An elevating body 29 movably provided up and down via 28; and a material seam adjustment piece holding member 31 provided on the elevating body 29 via two horizontal cylinders 30 so as to be reciprocally movable in the conveyor moving direction. Consists of

The support frame 27 is provided on the transfer conveyors 3 to
(5) A beam 32 laid on the beam 32, and a portal frame 34 protruding from the beam 32 via a base plate 33 to the side opposite to the fixed-size cutters 15, 16; The elevating cylinder 28 is downwardly mounted at the center of the horizontal member 34A of the 34, and guide bars 35 are vertically penetrated through sliding guide tubes 36 on both sides thereof.

The piston rod of the lifting cylinder 28
The center of the horizontal piece 29A of the elevating body 29 is connected to the lower end of 28A via connecting members 37A and 37B.
A The lower end of the guide bar 35 is fixed to both ends,
29 can be raised and lowered without interfering with the beam 32 of the support frame 27. The elevating body 29 has an L-shaped cross section, and a vertical piece 29B is provided below the end of the horizontal piece 29A.
The piston rod 30A is attached to the cutter 15 with a guide bar 38 extending parallel to the piston rod 30A at both ends thereof through a sliding guide tube 39.

The material seam adjustment piece holding member 31 includes an L-shaped mounting body 40 parallel to the beam and having the outer end of the piston rod 30A and the end of the guide bar 35 fixed thereto, and a cutter 15 attached to the mounting body 40. Four plate-shaped arms 41 fixed so as to protrude to the side, and suction pads 42 for sucking and holding the adjusting pieces (b), two of which are respectively attached to the lower surfaces of the distal ends of the arms 41.
The suction pads 42 are arranged at substantially equal intervals in the conveyor width direction. In addition, a vacuum device (not shown) is connected to the suction pad 42 to suck the adjustment piece (b).
It is detachable.

Each of the materials 10 to 12 is a liner sheet 4
It is wound in a roll shape via 3,44,45, and is unwound onto each of the transfer conveyors 3,4,5 while separating and winding the liner sheets 43-45, respectively. Next, an operation of attaching the material to the tire building drum 2 and forming the material into a cylindrical shape will be described. Since the sticking and forming operations of the respective materials 10 to 12 are the same, only the material 10 will be described.

First, the material 10 (biased code ply) fed onto the first conveyor 3A is supplied to the material seam detecting means 22.
Under the operation of the measuring roll 19, the tip is positioned on the cutter table 13 and cut and removed by the fixed-size cutter 15. This cut end piece is connected to the adjusting piece removing device 23.
And can be removed outside the conveyor path.

In order to separate the cut end of the material 10 from the cutter table 13, the first conveyor 3A is moved backward to move
Is retracted by a predetermined distance (for example, about 30 mm) (at this time, the measuring roll 19 is raised so as not to contact the material 10,
After the retreat is completed, it is lowered to make it measurable). Subsequently, while the first and second conveyors 3A and 3B are linked and driven forward, the material 10 is moved forward and the material seam (a) is detected while the count value of the measuring roll 19 is increased.
When the retreat distance + (plus) reaches the material set length,
Stop the conveyor 3, and if the material seam (a) is not within the specified range (within about 50mm) before and after the fixed cutting position,
The material 10 is cut at that position to obtain a fixed-size material.

Therefore, when the material seam (a) exists within a predetermined range before and after the fixed-size cutting position, the tip of the material 10 is advanced by a predetermined length (for example, 60 mm) as shown in FIG. 3 is stopped and cut by the fixed size cutter 15.
At the same time as the cutting of the material seam adjusting piece (b) having the predetermined length is completed, the holding member 31 waiting at the position shown by the two-dot chain line 131 in FIG. When reaching the position shown by the chain line 231, the horizontal cylinder 30
5 moves to the cutter table 13 shown by the solid line in FIG.

When the suction pad 42 is positioned on the cutter table 13, the material seam adjusting piece (b) is sucked by the suction pad by the operation of the vacuum device, and then the holding member 31 is moved by the operation of the horizontal cylinder 30 as shown in FIG. After moving forward to the position shown by the two-dot chain line 231, it is raised by the elevating cylinder 28 to reach the standby position shown by the two-dot chain line 131 in FIG. 5, and the horizontal cylinder 30 moves the holding member 31 onto the adjustment material receiver 46. Then, the suction force of the suction pad 42 is released, and the material seam adjusting piece (b) is dropped on the receiver 46, and returns to the standby position.

On the other hand, at the same time as the cut-out material seam adjusting piece (b) is carried out from the cutter table 13, the transfer conveyor is moved.
3 moves back a predetermined distance, and then moves forward again to advance the material 10 and measure its length.
3 is stopped, and the material 10 is cut to a fixed size by the fixed-size cutter 15. In addition, whether or not the suction of the material seam adjusting piece (b) is surely performed is determined by a detecting means such as a negative pressure sensor, and the control is performed so that there is no suction error.

Subsequently, the first conveyor 3A and the second conveyor 3B
Then, the second conveyor 3B and the supply conveyor 6 are driven to move the cut fixed-size material onto the supply conveyor 6, and the leading end of the fixed-size material is moved to the standby position at the leading end of the supply conveyor 6. Stop conveyors 3 and 6 and put them on standby. Next, the tire building drum 2 and the supply conveyor 6 are simultaneously driven, and the leading end of the fixed-size material is transferred onto the drum 2. Once the drum 2 and the supply conveyor 6 stop, during this time
Both widthwise edges of the sized material are detected by the sensor 26,
The supply conveyor 6 swings left and right (in the direction of the drum axis) to center the fixed-size material. When the centering is completed, the front and rear rollers 24 and 25 are lowered, and the leading end of the material is moved to the drum.
2 and the fixed-size material is pressed against the upper surface of the front end of the supply conveyor 6.

Then, the drum 2 and the supply conveyor 6 are simultaneously driven to apply a constant tension to the fixed-size material between the rollers 24 and 25 (the peripheral speed of the drum 2 is set to 1, and the moving speed of the conveyor 6 is set to 1). While applying a speed difference of 0.98 to 0.999), it is wound around the drum 2 and affixed to form a cylindrical shape. As described above, when the fixed-size material is supplied while being pressed by the rollers 24 and 25, the material is stuck with a constant tension without slipping, so that the accuracy of the overlapping amount of the fixed-size material, that is, the accuracy of the joint amount is secured. Since there is no variation and there is no material seam (a) at the joint portion, the joint portion does not swell abnormally and the quality is stabilized.

When the pasting of the fixed size material onto the tire building drum 2 is completed, the front roller 24 and the rear roller 25 are raised, and at the same time, the supply conveyor 6 returns to its own center (origin). On the other hand, while the sizing material is affixed to the tire building drum 2, not only the sizing of the material 10 to 12 but also the cutting of the material seam adjusting piece (b) and the outside of the conveyor road by the removing device 23 of the present invention. Is carried out.

The present invention is not limited to the above embodiment, but can be modified as appropriate.

[0029]

According to the present invention, as described above, the belt-shaped material for tire construction wound in a roll is fed out onto a transfer conveyor and cut into a predetermined length by a sizing cutter. Is supplied to the tire forming drum from a direction orthogonal to the axis thereof by a supply conveyor so that the material is automatically pasted and formed, and a material seam detecting means is provided in front of the cutter, and the material seam is located at the end of the fixed size material. When performing a tire forming machine in which the position of the material seam is adjusted by cutting off the front end of the material by a predetermined length, a support frame provided so as to straddle a transfer conveyor near the fixed-size cutter, and a vertical A material seam cut by a fixed-size cutter, comprising a movable body provided movably, and a material seam adjustment piece holding member movably provided on the lift body substantially parallel to the upper surface of the conveyor. Since the trimmings are carried out from the cutter table to the outside of the transfer conveyor path, the waiting time for fixed-size material cutting can be reduced, and workability and work efficiency can be improved. it can.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a tire forming machine equipped with the device of the present invention.

FIG. 2 is an explanatory diagram of a material seam position adjusting method.

FIG. 3 is a partially cutaway front view showing the embodiment of the present invention.

FIG. 4 is a partially broken plan view of the embodiment.

FIG. 5 is a partially cutaway right side view of FIG. 3;

[Explanation of symbols]

 2 Tire forming drum 3 Transfer conveyor 4 Transfer conveyor 5 Transfer conveyor 6 Supply conveyor 10 Tire forming strip material 11 Tire forming strip material 12 Tire forming strip material 13 Cutter base 14 Cutter base 15 Fixed size cutter 16 Fixed size cutter 17 Cutter Table 18 Fixed size cutter 19 Measuring roll 20 Measuring roll 21 Measuring roll 22 Material seam detecting means 23 Material seam adjusting piece removing device 27 Support frame 29 Elevating body 31 Material seam adjusting piece holding member b Material seam B Material seam adjusting piece

Claims (1)

(57) [Claims] 1. A tire-shaped belt-shaped material wound in a roll is fed out onto a transfer conveyor, cut into a predetermined length by a fixed-size cutter, and the fixed-size material is placed on a tire building drum at right angles to its axis. The material is supplied by a supply conveyor from the direction in which the material is supplied, and is automatically attached and formed. A material seam detecting means is provided in front of the cutter, and when the material seam is located at a fixed size material end, a predetermined length of the material tip is cut off. In a tire forming machine that adjusts the position of a material seam, a supporting frame provided so as to straddle a transfer conveyor in the vicinity of the fixed-size cutter, and an elevating body provided to be vertically movable on the frame. A material seam adjustment piece holding member movably provided substantially parallel to the upper surface of the conveyor on the elevating body, and transferring the material seam adjustment piece cut by the fixed-size cutter from the cutter table. An apparatus for removing a material seam adjusting piece in a tire molding machine, wherein the material is carried out of a conveyor path.