JPS623070B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention accurately and automatically centers a flexible belt-shaped material such as tire tread material by only rough centering without applying excessive external force to the material. The present invention relates to a feeding device for a flexible band-shaped material that can be fed to the next process at the same time.

Conventionally, most of the supply devices for treading materials used, for example, when forming green tires, are simply free conveyors in which rolling balls are simply arranged in a plane as shown in FIG.
When wrapping a flexible strip of tread material around a green tire, a so-called centering operation is performed to align the axis (center) of the tread material with the center of the crown of the green tire.
This was done entirely artificially, and as a result, there were significant variations in the accuracy of the application, which not only led to a decrease in the uniformity of the finished tire, resulting in a decline in tire quality, but also to impeding improvements in productivity. .

Therefore, recently, a feeding device equipped with a centering device has been developed and is in use, but this centering device is of a so-called fixed type, in which the centering guide roller that guides the shoulder portion of the treading material is fixed after adjustment. Not only is it extremely difficult to set the roller pressing force against the flexible treading material, but depending on how the width, height, and contact angle of each guide roller is adjusted, there are problems such as significant variations in centering accuracy. There is.

Furthermore, since the treading material moving surface of this supply device uses rolling balls as shown in FIG. The contact portion is dented by the biting, and when it is fed to the forming drum, not only does this act as resistance and cause the todding material to stretch, but if the guide roll is pushed too hard, the resistance further increases, etc. There are many problems, and the current situation is that they are hindering improvements in quality and productivity.

The present invention was developed as a result of studies to solve the above-mentioned problems.

Therefore, an object of the present invention is to provide excellent flexibility that allows the material to be fed to the next process to be accurately and automatically centered without applying excessive external force to the material by only rough centering adjustment. An object of the present invention is to provide a feeding device for a strip material having the following features.

That is, the present invention provides a plurality of conveyance systems in which a large number of auxiliary rolls, which are rotatable in a direction perpendicular to the rotational direction of the main roll, are attached to the outer peripheral surface of a main roll, which is rotatable in the direction in which the material is supplied. The rolls are arranged facing a conveying section arranged at intervals in the feeding direction of the material to be supplied, and at least a pair of left and right first guide members and a U-shape are provided, each of which has a U-shaped configuration. A first centering mechanism having a connecting rod having a connecting member is disposed, and further located on the delivery side of the first centering mechanism, each first guide member is connected to the centering member via the U-shaped connecting member of each connecting rod. at least a pair of left and right, which are interlocked with the movement in the width direction and are adjustable in widthwise spacing with respect to the axis of the conveying section, and are capable of elastically pressing the material to be fed from the left and right toward the axis within a certain range; The gist of the present invention is to provide a flexible belt-shaped material supply device characterized in that a second centering mechanism is provided with a second guide member.

Hereinafter, the present invention will be specifically described by way of examples with reference to the drawings.

1 to 5 show a flexible belt-shaped material supplying device according to an embodiment of the present invention, FIG. 1 is a partially cutaway explanatory plan view, and FIG. 3 is an explanatory diagram of a cross-sectional view taken from FIG. 1, and FIGS.
a is a front view explanatory view with a part cut away, b is a side view explanatory view with a part cut away, and FIG. FIG. 2 is a partially cutaway front view explanatory diagram showing the supply device.

In the figure, E denotes a flexible belt-like material supplying apparatus according to an embodiment of the present invention, which includes a transfer stage 20 in which a plurality of conveyance rolls 10 are arranged in a row at intervals in a conveyance section A, and A first centering mechanism 30 that is arranged facing the conveyance section A of the table 20 and is capable of adjusting the widthwise interval with respect to the axis a of the conveyance section A;
is disposed on the conveyance section A on the discharge side 30a of the conveyance section A, and is arranged in the conveyance section A in conjunction with the first centering mechanism 30, so that the distance in the width direction of the conveyance section A with respect to the axis a can be adjusted, and the distance in the axial direction of the object G is adjusted. Center Ga
and a second centering mechanism 40 that can be aligned with the axis a of the conveying section A.

To further explain this structure in detail, as shown in FIGS.
It is constructed by attaching a large number of auxiliary rolls 12 to the outer peripheral surface of the main roll 11, which are rotatable in a direction perpendicular to the rotational direction of the main roll 11.

Further, the first centering mechanism 30 includes a guide shaft 31 mounted on the transfer table 20 in parallel with orthogonal to the axis a of the transport section A, and a guide shaft 31 located in an intermediate part of each guide shaft 31 and parallel to this. A screw shaft 32 for moving the first guide member 34 rotatably attached to the transfer table 20, and a first guide screwed onto both left and right sides of the screw shaft 32 and into which each of the guide shafts 31 is loosely inserted. A holder 33 for attaching a connecting rod that also serves as a member attachment, a first guide member 34 attached to the outside of each holder 33, and a second centering member attached to the second centering mechanism 40 side of each holder 33, and a second centering member 34 attached to the second centering mechanism 40 side of each holder 33 A connecting rod 36 for actuating the second centering mechanism is provided with a U-shaped connecting member 35 that is approximately U-shaped in plan view at the end of the mechanism 40, and one outer end of the screw shaft 32 is provided with a connecting rod 36 for operating the second centering mechanism. By rotating the handle 37 attached to the screw shaft 32 in a required direction, the left and right holders 33 screwed onto the left and right sides of the screw shaft 32 can be moved simultaneously and in opposite directions. The distance between the first guide members 34 can be adjusted, and in conjunction therewith, the connecting rods 36 for operating the second centering mechanism can be operated.

Further, the second centering mechanism 40 includes a guide shaft 41 attached to the transfer table 20 in parallel with orthogonal to the axis a of the transfer section A, and a center holder attached to connect the central part of each guide shaft 41. 42, left and right holders 43 located on both sides of the center holder 42 and loosely inserted into each of the guide shafts 41, a center link 44 rotatably supported in the center of the center holder 42, and the center link 44. a left and right link 45 pivotally supported between both ends of the left and right holders 43, a spring 46 attached to each of the left and right holders 43 to draw each left and right link 45 toward the center holder 42, and a spring 46 that is attached to each of the left and right holders 43 to draw each left and right link 45 toward the center holder 42; 43 and a second guide member 47 attached to the outside thereof.

Further, as described above, each of the connecting rods 36 connecting the first centering mechanism 30 and the second centering mechanism 40 has a U-shaped connecting member 35 attached to the end on the side of the second centering mechanism 40. In the U-shaped portion 35a of each connecting member 35,
Since the first centering mechanism 30 side of the left and right holders 43 of the second centering mechanism 40 are loosely fitted as shown in FIG. The interval (width) between the left and right second guide members 47 attached to the left and right holders 43 of the centering mechanism 40 is the same as that of the left and right holders 33 of the first centering mechanism 30.
This means that the width of the U-shaped portion 35a of each U-shaped connecting member 35 can be set to be always narrower than the interval (width) between the left and right first guide members 34 attached to each other. Therefore, even if the interval (width) between the left and right first guide members 34 of the first centering mechanism 30 is set slightly wider than the width of the object G, that is, even if it is set roughly, the automatic The centering section, that is, the second centering mechanism 40, can automatically and accurately center the axial center Ga of the object G on the axis a of the conveying section A. As a result, the width setting work can be facilitated, and even if the width of the object G varies slightly, it can be accurately centered.

Next, referring to FIG. 5, the above-described feeding device E for a flexible strip material according to the present invention is used to apply the treading material (material to be supplied) G to the green tire on the forming drum 1 during green tire forming. An example applied to the supply device F will be briefly described.

FIG. 5 is a front view explanatory view showing a forming drum and a supply device for treading material, in which 1 is a forming drum, 2 is a holding table, 3 is a height adjustment section, 4 is a hinge,
Reference numeral 5 designates an air cylinder, 6 a rail, 20 a transfer table having the transport section A formed on its upper surface, 7 a bracket of the second centering mechanism 40, 8 a bracket of the first centering mechanism 30, and 10 a hammer roller.

The rail 6 is attached to the holding table 2 via the height adjustment part 3 and the hinge 4, and is attached to the transfer table 2.
0 can slide horizontally on a rail 6 by means of a plurality of rollers 20a, and can be driven back and forth by an air cylinder 5 attached to this rail 6.

Therefore, by adjusting the height adjustment part 3 and swinging the rail 6 around the hinge 4, the height of the transfer table 20 can be freely set with respect to the forming drum 1, and furthermore, the height of the transfer table 20 can be set freely with respect to the forming drum 1. 20 can approach the forming drum 1 from the standby position by the operation of the air cylinder 5, and can feed the object G.
It is possible to improve the accuracy of pasting on the forming drum 1.

Next, the operation of supplying the treading material (material to be supplied) G to the crown portion of a green tire (not shown) mounted on the forming drum 1 using the above-mentioned apparatus F and wrapping it around the same will be briefly explained.

First, in the state shown in FIG. 5, the material for treading (material to be supplied) G is placed on the transport section A on the transport table 20 from a Cayley truck or the like (not shown). Of course, at this time, the left and right first guide members 34 (guide rollers in the embodiment) of the first centering mechanism 30 have already been roughly adjusted for centering as described above.

Then, the tread material G is passed through the first and second centering mechanisms 30, 40, and the tip thereof is
It moves to a position where it protrudes from the tip of the transfer table 20 by a required dimension.

Next, the air cylinder 5 is operated to bring the transfer table 20 close to the forming drum 1, and after the tip of the toreading material G is brought into contact with and adhered to the green tire mounted on the drum 1, The sticking portion is pressed with the hammer roll 10.

When the driving motor of the forming drum 1 is energized, the forming drum 1 is rotated, and the toreading material G is automatically centered by the first centering mechanism 30 and the second centering mechanism 40 and wound around the green tire. and the forming drum stops its rotation.

Next, the transfer table 20 is transferred to the air cylinder 5.
The final end of the treading material G wrapped around the green tire is brought into close contact with the leading end, and the work is completed.

Since the present invention is configured as described above, it has the following effects. That is, (a) each of the connecting rods 36 connecting the first centering mechanism 30 and the second centering mechanism 40;
The connecting members 35 having a substantially U-shape in plan view are attached to the connecting members 35, and the first centering mechanism 30 and the second centering mechanism 40 are connected via the U-shaped portions of the connecting members 35. When the object to be supplied G is not set, the distance (width) between the left and right second guide members 47 of the second centering mechanism 40 is equal to the width of the first centering mechanism 3.
This means that the width of the U-shaped portion of each U-shaped connecting member 35 can always be set narrower than the interval (width) between the left and right first guide members 34 of 0. Therefore, the first
Even if the interval (width) between the pair of left and right first guide members 34 of the centering mechanism 30 is set slightly wider than the width of the object G, that is, even if it is set roughly, the automatic centering section, that is, the first The 2-centering mechanism 40 makes it possible to automatically and accurately center the axial center Ga of the object G on the axis a of the transport section A.
As a result, centering adjustment does not require precision during setup, there are no individual differences in adjustment, and centering accuracy can be significantly improved compared to the conventional feeding device, making centering adjustment work easier. On the other hand, even if the width of the object to be supplied varies slightly, it can be accurately centered.

(b) Furthermore, the present invention provides that the main roll 11 is attached to the outer peripheral surface of the main roll 11, which is rotatable in the feeding direction of the supplied material G, in the conveying section A provided with the first and second centering mechanisms 30 and 40. A plurality of conveyor rolls 10 each having a large number of auxiliary rolls 12 rotatable in a direction perpendicular to the rotation direction of the transport rolls 10.
are arranged in a row at intervals in the feeding direction of the material to be supplied G, so that each of the centering mechanisms 30 and 4
The centering effect due to zero can be further promoted, and a high automatic centering effect can be obtained.

Therefore, the present invention provides excellent flexibility in that the workpiece can be accurately and automatically centered and fed to the next process by only rough centering adjustment without applying excessive external force to the workpiece. It is possible to provide a feeding device for a strip material having the following.

[Brief explanation of the drawing]

1 to 5 show a flexible belt-shaped material supplying device according to an embodiment of the present invention, FIG. 1 is a partially cutaway explanatory plan view, and FIG. 3 is an explanatory diagram of a cross-sectional view taken from FIG. 1, and FIGS.
a is a front view explanatory view with a part cut away, b is a side view explanatory view with a part cut away, and FIG. FIG. 6 is a front view explanatory view with a part cut away showing the supply device, and FIG. 6 is a front view explanatory view showing an example of a conventional conveyance roll. 10... Conveyance roll, 11... Main roll, 12
...Auxiliary roll, 30...First centering mechanism, 34...First guide member, 35...U-shaped connecting member, 35a...C-shaped portion of the U-shaped connecting member, 3
6...Connection rod, 40...Second centering mechanism, 47...Second guide member, A...Transportation section, a...
...Axis of the conveying section, G...Axis of the object to be supplied, Ga...Axis of the object to be fed.

Claims (1)

[Claims] 1. A transfer table 20 in which a plurality of conveyance rolls 10 are arranged in a line at intervals in a conveyance part A, and a first centering mechanism 30 arranged on the carry-in side of this transfer table 20,
A second centering mechanism 40 is disposed on the transfer table 20 on the unloading side of the first centering mechanism 30, and the transfer roll 10 includes:
An auxiliary roll 12 that is rotatable in a direction perpendicular to the rotational direction of the main roll 11 is provided on the outer peripheral surface of the main roll 11 that is rotatable in the direction in which the material to be supplied G is supplied.
The first centering mechanism 30 includes a pair of left and right first guide members 34 that can adjust the widthwise interval with respect to the axis a of the conveying section A, and each of the first guide members. 3
4 through a holder 33, and a U-shaped connecting member 35 that is approximately U-shaped in plan view and attached to the distal end side of each connecting rod 36. The screw shaft 32 is screwed onto the left and right sides of a threaded screw shaft 32, and by rotating the screw shaft 32, each holder 33 can be moved simultaneously and in opposite directions. The mechanism 40 includes a pair of left and right holders 43, each of which has a pair of left and right second guide members 47 attached to a guide shaft 41 that is attached parallel to the transfer table 20 with the axis a of the conveyance section A orthogonal to the transfer table 20.
This holder 43
a pair of left and right second guide members 47 whose first centering mechanism 30 side is movably and loosely fitted into the U-shaped connecting member 35 and fitted into the guide shaft 41;
A center holder 42 is provided in the center between them, and both ends of a center link 44 pivotally supported in the center of the center holder 42 and left and right links 45 rotatably provided on the pair of left and right holders 43 are rotatable. The pair of left and right holders 43 are connected to each other.
A flexible belt-shaped material supply device characterized in that a spring 46 for drawing each second guide member 47 inward is interposed therebetween.