JPH0414192Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a radial tire forming device.

(Prior Art) When winding a tread around a belt ply in a radial tire forming apparatus, it is well known that centering the tread is easier if the tread is fed from below the forming drum than from above the forming drum.

(Problem to be solved by the invention) In the above-mentioned radial tire forming equipment, it is desirable to place the tread service on the worker's side in order to reduce the movement range of the forming worker. This was causing problems in the transportation of materials and reducing work efficiency.

The present invention has been proposed in view of the above-mentioned problems, and its purpose is to provide a radial tire forming apparatus that can improve work efficiency.

(Means for Solving the Problems) In order to achieve the above object, the radial tire forming apparatus of the present invention has a belt-tread assembly in which a belt and a tread are assembled together by winding the belt and tread in that order around the outer peripheral surface of the drum during diameter expansion. A forming drum for assembly, a traversing table that can reciprocate on the base in a direction parallel to the center line of the forming drum, and a traversing table that can reciprocate on the traversing table in a direction perpendicular to the center line of the forming drum. The apparatus includes a movable tread applicator and a stitcher movable back and forth on the traverse table in a direction perpendicular to the centerline of the forming drum.

(Function) As mentioned above, the radial tire forming apparatus of the present invention is mounted on a transverse table that can reciprocate in a direction parallel to the central axis of the forming drum for belt/tread assembly.
A treaded applicator is provided so that it can reciprocate in a direction perpendicular to the center line of the forming drum, and a stitcher is provided so that it can reciprocate in a direction perpendicular to the center line of the forming drum. The necessary one of the stitcher and the stitcher is moved under the belt/tread assembly forming drum according to the work procedure, and the other is evacuated. In other words, the tread applicator is normally moved (retracted) toward the operator so as not to interfere with the operator, and is advanced only when feeding (loading) the tread onto the tread applicator.

(Embodiment) Next, the radial tire forming apparatus of the present invention will be explained with reference to an embodiment shown in Figs. 1 to 4. 1 in Figs. The main body, 2 is a forming drum for belt and tread assembly, 3 is a belt servicer with a ply cutter, 4 is a traverse table, 4a is a base, 5 is a tread applicator, 6 is a stitcher for the belt forming machine in the first process, and the same belt A stitcher 6 for the molding machine is adapted to firmly join the belts and between the belts and the treads.

Further, 7 is a common base, 8 is a pair of rails fixed on the same common base 7, 9 is a belt transfer for transporting the belt/tread assembly that is guided by the rail 8, and 10 is a saving drum; 11 is the main belt forming machine main body of the second stage forming device; 12
1 is a stitcher for the main belt forming machine, and 13 is a transfer for the main forming machine that is guided by the rail 8 and is used to load the green case and unload the formed green tire. ing.

Reference numeral 30 denotes a take-out device, and the take-out device 30 has a swing lever 32 swingably attached to the take-out device main body 31 and a hanger 33 attached to the tip of the swing lever 32. 33 is adapted to swing from a vertical plane position including the drum center line XX to the - position shown in the figure.

This mounting device 30 includes a control device and an operating device, but illustration thereof is omitted.

Further, a rail 14 is fixed on the base 4a as shown in FIG. The drum is reciprocated parallel to the drum center line X--X by a driving device in which the drum is omitted.

Further, a guide member 16 (not shown) is fixed to the transverse table 4, and a pair of rails 1 that engage with the guide member 16 are attached to the toread applicator 5.
7 is fixed, and the toread applicator 5 is moved along the drum center line X-X by a drive device (not shown).
It is designed to reciprocate in a direction perpendicular to the

FIG. 1 shows a state in which the tored applicator 5 is retracted toward the belt servicer 3 side. As shown in FIGS. 3 and 4, this Toledo applicator 5 consists of an auxiliary frame 20 that is attached to a main frame 18 to which a rail 17 is fixed, and an auxiliary frame 20 that is vertically swingable via a shaft 19. A drive device (not shown) for vertically swinging the main frame 18 and a plurality of conveyor rollers 22 rotatably assembled to the auxiliary frame 20 and a shaft 23 between the conveyor rollers 22. The centering roller 21 is rotatably mounted.

The stitcher 6 also has a guide member 25 that engages with a pair of rails 24 fixed to the traverse table 4, and is moved in a direction perpendicular to the drum center line XX by a drive device (not shown). It is designed to move back and forth.

Next, the operation of the radial tire forming apparatus shown in FIGS. 1 to 4 will be explained in detail. When the belt servicer 3 and belt forming machine main body 1 are winding a plurality of belts onto the forming drum 2 for belt/tread assembly, the tord applicator 5 carrying the tord T is moved toward the right in FIGS. 1 and 2. Move to
The center line of the treaded applicator 5 coincides with the center line of the belt servicer 3.

When the winding of the belt onto the forming drum 2 for belt and tread assembly is completed, the auxiliary frame 20 of the tread applicator 5 is raised, and the tip of the tread T is pressed against the lower surface of the forming drum 2 for belt and tread assembly. Then, by rotating the forming drum 2 for belt and tread assembly, the tread T is wrapped around the outer surface of the belt that has already been pasted.

At this time, the centering roller 21 engages with a groove T _a previously provided in the center of the outer peripheral surface of the tread T (the lower surface when the tread T is on the tread applicator 5), and the centering of the tread T is performed. be exposed. While the winding of the tread T is completed and both ends are being folded, the auxiliary frame 20 is lowered and the tread applicator 5 is folded.
returns to the solid line position in FIG.

When the joining of the tread T is completed, the forming operator goes to the nearby conveyance truck to pick up the next tread T. During this time, the footer 6 moves forward toward the forming drum 2 for belt/tread assembly (the center of the drum moving in a direction perpendicular to line X-X),
As the stitching is performed, the tread applicator 5 moves forward (moves in a direction perpendicular to the drum center line XX) and projects toward the operator.
The operator places the prepared tread T on the protruding tread applicator 5. At this time, the tread T is placed on the tread T with its outer circumferential surface facing downward and so that the guide groove _Ta on the outer circumferential surface engages with the centering roller 21.

Once the tored T is placed on the tored applicator 5, the push button for retracting the tored applicator 5 is pressed to move the tored applicator 5 backward.

(Effects of the invention) The radial tire forming apparatus of the invention is configured as described above, and can achieve the following effects. That is, when expanding the diameter of a forming drum for belt/tread assembly, a belt and a tread are wound in that order around the outer peripheral surface of the forming drum to create a cylindrical belt/tread assembly. A servicer (see 3 in Figure 1) located at the rear (on the side opposite to the operator) supplies the tread as well as the belt to the upper part of the outer peripheral surface of the forming drum (at this time, the contact surface with the belt is (The adhesive surface that has adhesive strength touches the rollers of the roller conveyor in the servicer) is molded for ease of centering as described in the [Prior Art] column above. It has been proposed to supply the adhesive from below the outer peripheral surface of the drum (in this case, the tread is turned upside down and the adhesive surface is the upper surface of the tread). However, in general, a stitcher for firmly adhering between the belts and between the belt and the tread is placed in front of the forming drum (on the operator's side). (The length of one radial tire tread is approximately 2 m for a passenger car tire, and 3 to 4 m for a truck bus tire.)

Therefore, in the present invention, we break away from the conventional concept that the stitcher is located below the forming drum, and the stitcher only needs to be located below the forming drum when compressing tire members. Noting that this was not necessary, the following configuration was adopted: the treaded applicator was placed on a transverse table that could reciprocate in a direction parallel to the center line of the forming drum, The above requirements are met by providing a stitcher that can reciprocate in a direction perpendicular to the center line of the forming drum, and a stitcher that can reciprocate in a direction perpendicular to the center line of the forming drum. This has the effect of improving work efficiency since there is no hindrance to the transportation of materials.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of a radial tire forming apparatus according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is another side view taken along the arrow A-A line in FIG. FIG. 4 is a longitudinal sectional side view taken along the line BB in FIG. 3. FIG. 2... Molding drum for belt/tread assembly, 4
...Transverse table, 4a, 5...Treaded applicator, 6...Stitcher, X-X...Molding drum center line.

Claims (1)

[Scope of utility model registration request] A forming drum for belt and tread assembly, in which a belt and a tread are assembled together by wrapping the belt and tread in that order around the outer circumferential surface of the drum during diameter expansion, and is capable of reciprocating on a base in a direction parallel to the center line of the forming drum. a traversing table; a treaded applicator capable of reciprocating on the traversing table in a direction perpendicular to the center line of the forming drum; A radial tire forming device characterized by comprising a stitcher capable of reciprocating motion.