JPH06218845A - Material joint adjusting piece removing device in tire molding machine - Google Patents

Abstract

PURPOSE:To enhance the workability and efficiency of sizing cutting by feeding a cut material joint adjusting piece to the outside of a conveyor passage without using a conveyor. CONSTITUTION:In a tire molding machine wherein a tire constituting material is delivered to a transfer conveyor 3 to be cut into predetermined length by a sizing cutter 15 and the cut material is supplied to a tire molding drum by a supply conveyor to be automatically bonded and molded, a material joint detection means is arranged to the front stage of the sizing cutter 15 and, when the material joint is positioned at the end part of a sizing material, the leading end of the material is cut to adjust the position of the material joint and the cut adjusting piece port is directly fed out to the outside of the conveyor 3 from a cutter stand 13 by a removing device provided with a lift body 29 to the support frame 27 provided in the vicinity of the sizing cutter 15 and the adjusting piece holding member 31 freely movable in parallel to the upper surface of the conveyor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire molding machine, in which a belt-shaped material for tire construction (hereinafter simply referred to as "material") is cut into a predetermined size and attached to a tire molding drum to form a cylindrical shape. For example, the present invention relates to a device for automatically removing cut adjustment pieces for adjusting the position 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 from a lower portion is conveyed on a conveyor of a material supply device (hereinafter referred to as a servicer) installed near a tire forming drum. After cutting to a length equal to or more than one round of the drum in advance, this constant-sized material is supplied to the forming drum from a direction orthogonal to its axis by a supply conveyor in which the peripheral speed and the moving speed of the forming drum are synchronized. Then, a molding method of pasting is generally adopted.

The above-mentioned material, in particular, the bias cord ply, is a long belt-shaped product obtained by joining plies obtained by cutting a wide original sheet into a predetermined width and an angle, and joining the plies in a cross section to form a long strip. It is taken up as a stock roll. Therefore, when the material is cut to size, a seam (bias joint) may be located at the end of the size material.

Conventionally, when a seam is located at an end of a sizing material, when the seam is attached to a tire forming drum, a lap joint portion protrudes abnormally and a bulging portion is deformed and deformed unevenly when the tire is inflated. In order to cause undesired phenomena such as occurrence, the seam is detected during the sizing of the material, and when this is located at the end of the sizing material, the seam is partially cut and removed for adjustment. (For example, JP-A-56-11
(See Japanese Patent No. 1660).

[0005]

By the way, in the above-mentioned prior art, the short adjusting piece cut for adjusting the position of the material joint is sent to the lower side of the tire forming drum by the supply conveyor to the tire forming drum and thrown away. However, or because the material is lengthened by a certain length and pasted, it is manually removed, and there is a problem in workability because the adjustment piece cannot be moved to the next operation until it is discarded.

The present invention has been made in view of the above situation, and an object of the present invention is to cut a short material seam adjusting piece from a cutter table without using a conveyor immediately to convey it. 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 the outside to improve workability and efficiency of constant-size cutting.

[0007]

In order to achieve the above object, the present invention takes the following technical means. That is, the present invention, the belt-shaped material for forming a tire, which is wound into a roll, is fed out on a transfer conveyor and cut into a predetermined length by a sizing cutter, and the sizing material is attached to the tire forming drum with its axis line. It is supplied by a supply conveyor from the orthogonal direction and automatically pasted and molded, and the material seam detection means is arranged in the preceding stage of the cutter, and when the material seam is located at the end of the sizing material, the material tip is of a predetermined length. In a tire molding machine in which the position of a material seam is cut out and adjusted, a supporting frame provided across the transfer conveyor in the vicinity of the sizing cutter, and an elevating body provided so as to be vertically movable on the frame And a material seam adjusting piece holding member movably provided on the elevating body substantially parallel to the upper surface of the conveyor, and the material seam adjusting piece cut by the sizing cutter is placed on the 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 adjusting piece on the cutter table, which is cut by the constant-size cutter, is held by the holding member that has entered directly above and is carried out from the cutter table. At the same time, the lifting / lowering body is lifted to immediately carry it out of the transfer conveyor path, and at a predetermined place, it is separated from the holding member and is dropped and removed. Therefore, the waiting time is short, and the next length measuring / sizing cutting operation can be started promptly.

[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 molding machine according to the present invention, in which a material supply device (hereinafter referred to as a servicer) 1 is installed on the rear side of a tire molding drum 2 and a material transfer conveyor 3 is provided on an upper portion thereof. , 4, 5 are provided in upper, middle, lower three stages, a common supply conveyor 6 is provided between each of the conveyors 3 to 5 and the drum 2, and the roll supporting means 7, 8,
Roll-shaped materials 10, 11 and 12 are rotatably mounted on the plate 9.

The transfer conveyors 3, 4 are the first conveyor 3
It consists of A, 4A and the second conveyor 3B, 4B.
4B is provided with a driving means (not shown) so that it can be operated independently, and the first and second conveyors 3A, 3B, 4A, 4B are connected by an interlocking means (not shown) with a detachable clutch. The cutter stands 13 and 14 are arranged between the first and second conveyors 3A, 3B, 4A and 4B, and the sizing cutters 15 and 16 as the material cutting means are arranged on the upper portions of the cutter stands 13 and 14, respectively.

The transfer conveyor 5 and the supply conveyor 6 are
Individual driving means arranged in series on the same plane
(Not shown) allows independent operation, and both conveyors 5,6
A cutter table 17 is arranged between them, and a sizing cutter 18 is arranged above the cutter table 17. In addition, cutter base 1
The conventional cutters are used for the 3, 14, 17 and the sizing cutters 15, 16, 18, and thus the description thereof will be omitted.

Each first conveyor 3A, 4A and transfer conveyor 5
Above, the media measuring rolls 19
0,21 (for example, urethane rolls) are arranged so that they can move up and down, and material seam detection means (for example, sensors such as limit switches and dial gauges for thickness detection)
22 are provided. The transfer conveyors 4A, 5 in the middle and lower stages
For, the material joint detecting means 22 is omitted in the drawing.

The measuring rolls 19 to 21 and the material seam detecting means 22 are capable of abutting on and separating from the respective materials 10 to 12, and the moving amount, that is, the length and the material seam of the respective materials 10 to 12. (A) (See Fig. 2) can be accurately measured and detected,
In addition, the joint position is controlled so that the material sizing set value, that is, the sizing cutting position and the adjustment piece cutting position can be surely grasped.

That is, the material seam (a) is shown in FIG.
As shown in (b), the sizing position of materials 10-12 (A)
If it is within the specified range before and after (for example, within 50 mm),
The tip ends of ~ 12 are cut by a predetermined amount (for example, 60 mm), and the material seam (a) is controlled so as not to exist within a predetermined range (at least 50 mm) from the front and rear ends of the cut sizing material.
In addition, in the vicinity of the cutter stands 13, 14, 17 the second conveyor 3
Cut material seam adjusting piece (B) located on the B, 4B side
A device 23 of the present invention for removing the is provided.

The supply conveyor 6 is arranged so as to be orthogonal to the axis of the drum 2 and its tip can be brought close to the upper side of the drum 2. The front end of the supply conveyor 6 presses the material onto 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. The apparatus 23 according to the embodiment of the present invention, as shown in FIGS.
A supporting frame 27 provided so as to straddle the transfer conveyors 3, 4, 5 in the vicinity of 5, 16, 18 and an elevating cylinder for the frame 27.
An elevating body 29 which is vertically movable via 28, and a material seam adjusting piece holding member 31 which is reciprocally movable on the elevating body 29 through two horizontal cylinders 30 in the conveyor moving direction. Made of.

The support frame 27 includes transfer conveyors 3 ...
5 a beam 32 straddled above, and a gate-shaped frame body 34 erected on the beam 32 through a base plate 33 so as to project to the side opposite to the sizing cutters 15 and 16, The elevating cylinder 28 is mounted downward at the center of the transverse member 34A of 34, and guide bars 35 are vertically pierced through slide guide tubes 36 on both sides thereof.

The piston rod of the lifting cylinder 28
The horizontal piece 29A of the elevating body 29 is connected to the lower end of the elevating body 29 via the connecting members 37A and 37B.
The lower end of the guide bar 35 is fixed to both ends of the A
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 downward from the end of the horizontal piece 29A, and the vertical cylinder 29B is provided at the center thereof with the horizontal cylinder 29B.
A piston rod 30A is attached to the cutter 30, and guide bars 38 extending in parallel with the piston rod 30A are penetrated through both ends of the piston 30 through sliding guide tubes 39.

The material seam adjusting piece holding member 31 is parallel to the beam, and has an L-shaped mounting body 40 to which the outer end of the piston rod 30A and the end of the guide bar 35 are fixed, and a cutter 15 attached to the mounting body 40. 4 plate-like arms 41 fixed so as to project to the side, and a suction pad 42 for sucking and holding the adjusting pieces (b) attached to each of two plate-like arms 41 on the lower surface of the tip of the arm 41.
The suction pads 42 are arranged at substantially equal intervals in the width direction of the conveyor. A vacuum device (not shown) is connected to the suction pad 42 to suck the adjustment piece (b),
It is detachable.

The materials 10 to 12 are liner sheets 4 respectively.
It is wound in a roll shape through 3,44,45 and is fed onto each transfer conveyor 3,4,5 while separating and winding the liner sheets 43-45 respectively. Next, the work of attaching the material to the tire forming drum 2 and forming it into a cylindrical shape will be described. The pasting and forming operations of the materials 10 to 12 are the same, so only the material 10 will be described.

First, the material 10 (bias cord ply) unrolled on the first conveyor 3A is the material seam detecting means 22.
Also, under the operation of the measuring roll 19, the tip is positioned on the cutter table 13 and is cut and removed by the sizing cutter 15. This cut end piece is the adjustment piece removing device 23.
Can be adsorbed and removed outside the conveyor path.

Then, 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 the material 10
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 complete, lower it to make it measurable). Then, while the first and second conveyors 3A, 3B are interlocked with each other, the material 10 is moved forward while the material 10 is detected, and the count value of the measuring roll 19 is
When the retreat distance + (plus) material set length is reached,
If the transfer conveyor 3 is stopped and the material seam (a) is not within the specified range (within approximately 50 mm) before and after the sizing cutting position,
The material 10 is cut at that position to obtain a sizing 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. Stop 3 and cut with the sizing cutter 15.
At the same time when the cutting of the material seam adjusting piece (b) of a predetermined length is completed, the holding member 31 standing by at the position shown by the chain double-dashed line 131 in FIG. When the position indicated by the dashed line 231 is reached, the horizontal cylinder 30
Thus, it moves onto the cutter table 13 shown by the solid line in FIG.

When the suction pad 42 is located on the cutter table 13, the material seam adjusting piece (b) is sucked onto 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 indicated by the chain double-dashed line 231, the lifting cylinder 28 raises it to the standby position shown by the chain double-dashed 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 receiving tray 46, and returns to the standby position.

On the other hand, the cut material joint adjusting piece (b) is carried out from the cutter table 13 and at the same time, the transfer conveyor.
After 3 is retracted for a predetermined distance, it is advanced again to advance the material 10 and its length is measured.
3 stops and the material cutter 10 cuts the material 10 to a specified size. It should be noted that whether or not the material seam adjusting piece (b) is surely adsorbed is determined by a detecting means such as a negative pressure sensor, and control is performed so that there is no adsorption error.

Subsequently, the first conveyor 3A and the second conveyor 3B
, The second conveyor 3B and the supply conveyor 6 are driven to move the cut sizing material onto the supply conveyor 6, and the tip of the sizing material is moved to the standby position at the tip 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 to transfer the tip of the sizing material onto the drum 2. Once the drum 2 and supply conveyor 6 are stopped,
The sensor 26 detects both widthwise edges of the sizing material,
The supply conveyor 6 swings to the left and right (drum axis direction) to center the sizing material, and when the centering is completed, the front and rear rollers 24, 25 descend and the material tip moves to the drum.
2 As well as being pressed onto the sizing material, it is pressed onto the upper surface of the front end of the supply conveyor 6.

Therefore, the drum 2 and the feed conveyor 6 are simultaneously driven to apply a constant tension between the rollers 24 and 25 for the sizing material (the peripheral speed of the drum 2 is 1 and the moving speed of the conveyor 6 is While making a speed difference of 0.98 to 0.999), the drum 2 is wrapped around and pasted to form a cylindrical shape. In this way, when the sizing material is supplied while being pressed by both rollers 24 and 25, the material is pasted with a constant tension without slipping, so the accuracy of the sizing material both ends overlapping amount, that is, the joint amount is secured. Since there is no variation and the joint has no material seam (a), the joint does not bulge abnormally and the quality is stabilized.

When the laminating and molding of the sizing material on the tire building drum 2 is completed, the front roller 24 and the rear roller 25 rise, and at the same time, the supply conveyor 6 returns to its center (origin). On the other hand, while the sizing material is attached to the tire forming drum 2, not only the slicing of the materials 10 to 12 but also the cutting of the material seam adjusting piece (b) and the outside of the conveyor path 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 in design as appropriate.

[0029]

As described above, according to the present invention, the belt-shaped material for forming a tire, which is wound in a roll shape, is fed onto a transfer conveyor and cut into a predetermined length by a sizing cutter, and the sizing material is then cut. Is supplied to the tire building drum from a direction orthogonal to the axis of the tire by a supply conveyor so that the material is automatically pasted and formed.The material seam detecting means is arranged in the preceding stage of the cutter, and the material seam is located at the end of the sizing material. In this case, in the tire forming machine in which the material tip is cut by a predetermined length to adjust the position of the material seam, the supporting frame provided so as to straddle the transfer conveyor in the vicinity of the sizing cutter and the upper and lower parts of the frame. A material seam, which is composed of a vertically movable body and a material seam adjusting piece holding member provided on the vertically movable body substantially parallel to the upper surface of the conveyor, and cut by a sizing cutter. Since it is characterized in that the trimmed piece is carried out from the cutter table to the outside of the transfer conveyor path, it is possible to shorten the waiting time for material sizing and improve workability and work efficiency. it can.

[Brief description of drawings]

FIG. 1 is a schematic side view of a tire molding 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 an embodiment of the present invention.

FIG. 4 is a partially cutaway plan view of the same embodiment.

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

[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 stand 14 Cutter stand 14 Sizing cutter 16 Sizing cutter 17 Cutter Table 18 Sizing cutter 19 Measuring roll 20 Measuring roll 21 Measuring roll 22 Material seam detection means 23 Material seam adjusting piece removing device 27 Support frame 29 Elevating body 31 Material seam adjusting piece holding member a Material seam Lo material seaming adjusting piece

Claims (1)

[Claims] 1. A belt-shaped material for forming a tire, which is wound in a roll shape, is fed onto a transfer conveyor and cut into a predetermined length by a sizing cutter, and the sizing material is formed on a tire forming drum at a right angle to its axis. It is supplied by a supply conveyor from the direction to perform automatic pasting and molding, and the material seam detection means is arranged in the preceding stage of the cutter, and when the material seam is located at the end of the sizing material, the material tip is cut by a predetermined length. In the tire forming machine for adjusting the position of the material seam, a supporting frame provided in the vicinity of the sizing cutter so as to straddle the transfer conveyor, and an elevating body provided in the frame so as to be vertically movable. A material seam adjusting piece holding member movably provided on the elevating body substantially parallel to the upper surface of the conveyor, and the material seam adjusting piece cut by a sizing cutter is transferred from the cutter table. A material seam adjusting piece removing device in a tire molding machine, characterized in that it is carried out to the outside of a conveyor path.