JPH0637090B2 - Secondary molding equipment for radial tires - Google Patents

Description

TECHNICAL FIELD The present invention relates to a secondary molding device for a radial tire for an automobile.

(Prior Art) A radial tire of an automobile is manufactured by deforming a cylindrical primary carcass made by a primary molding machine into a toroidal shape by a secondary molding device and attaching a belt and a tread cap to the surface thereof. Then, as the secondary molding device, a belt molding drum for laminating and stacking the belt and the tread cap, respectively, and the primary carcass are deformed into a toroidal shape, and the belt and the belt are formed on the outer surface thereof. It is known that a shaping drum for laminating a stack of tread caps is provided separately from each other on a common axis.

(Problems to be solved by the invention) However, conventionally, a primary carcass molded by a primary molding machine is carried to a secondary molding device by a carrier for a primary carcass,
These primary carcasses are arranged on a carcass stand placed in front of the headstock of the secondary molding device, picked up one by one as needed, and manually carried to the front of the shaping drum of the secondary molding device. Was attached to the shaping drum to carry out the secondary molding, one operator was required exclusively for the operation of the secondary molding device.

This invention makes it possible to automatically attach the primary carcass placed at a predetermined position in front of the secondary molding device to the shaping drum of the secondary molding device, thereby reducing the burden on the operator of the secondary molding device. It has been reduced.

(Means for Solving the Problem) In order to solve the above problems, in the present invention, a belt forming drum for laminating and stacking a belt and a tread cap of a radial tire endlessly, respectively,
A cylindrical primary carcass is deformed into a toroidal shape, and a shaping drum for showing and laminating the above belt and tread cap laminate on the surface thereof is arranged on a common axis apart from each other, and the above belt molding is performed. In a secondary forming device for a radial tire provided with a transfer ring for transferring the above-mentioned laminated body from the belt forming drum to the shaping drum between the drum and the shaping drum, the supply side of the primary carcass to the shaping drum is upwardly moved upward. A transverse rail parallel to the common axis of the belt forming drum and the shaping drum and a transverse traveling carriage that moves on the transverse rail are provided, and the transverse traveling carriage vertically extends above the common axis. Secure the direction rail in a cantilevered manner and attach it to the vertical carriage that moves on this vertical rail. Install the lifting frame for vertically vertically downwards, the primary carcass under side of the lifting frame is provided with a carcass holder its axis can be clamped from the outside in a posture directed parallel to the common axis.

(Operation) When the primary carcass is supported on a carcass stand prepared in advance below the vertical rail, the horizontal traveling carriage moves with respect to the horizontal rail, and the vertical traveling carriage moves with respect to the vertical rail. The vertically traveling carriage stops right above the primary carcass of the carcass stand. Then, the elevating frame descends, the carcass holder of the elevating frame clamps the primary carcass, and then the elevating frame rises. Then, the horizontal traveling carriage and the vertical traveling carriage move again, and the vertical traveling carriage stops above the middle of the shaping drum and the belt forming drum. Then, after the elevating frame descends and the height of the primary carcass matches the height of the shaping drum, the traverse carriage moves to the center of the shaping drum, whereby the primary carcass moves along the common axis. Attached to the shaping drum. When the mounting is completed, the carcass holder is opened, and the carcass holder rises with the lifting frame leaving the primary carcass.

(Embodiment) In the plan view of FIG. 1, 1 is a shaping drum of a secondary molding apparatus, which is cantilevered by a right headstock 2 and is attached to a free end of a rotating main shaft 3. A transfer ring and a belt forming drum (both not shown) are provided on the left side of the shaping drum 1, and a primary forming machine is provided on the upper side of the drawing, and a cylindrical primary formed by the primary forming machine is provided. The carcass A is hung on an arm 5 of a carcass stand 4 which is provided in advance between the primary molding machine and the secondary molding device, and the arm 5
From the above, the primary carcass A is appropriately removed and attached to the shaping drum 1 to be deformed into a toroidal shape, while the belt and the tread cap are endlessly formed on the belt forming drum, and the belt and the tread cap are attached to the transfer member. The ring transfers it to the shaping drum 1, and this is worn on the toroidal primary carcass on the shaping drum 1. In this embodiment, the carcass stand 4 is formed so as to be automatically movable in parallel with the main shaft 3 of the shaping drum 1 for a predetermined distance, and the arm 5 is formed so as to be able to move up and down. When multiplied by A, the primary carcass A
The height of the arm 5 is set so that the height of the arm 5 becomes equal to the height of the shaping drum 1.

A pillar 10 (see FIG. 2) is erected on the primary molding machine side of the carcass stand 4, that is, on the upper left side of FIG.
An upper frame 11 is fixed to the upper end of the parallel to the main shaft 3, and a pair of lateral rails 12 are laid on the upper frame 11, and a rectangular horizontal carriage 13 is mounted on the lower surface of the lateral rail 12. It is slidably mounted via a sliding block 14 (see FIG. 2). Further, toothed pulleys 19 for the toothed belt 18 are attached to both ends of the upper frame 11 in the longitudinal direction, and the toothed belt 18 wound around the toothed pulley 19 is attached.
Both ends of the horizontal traveling carriage 13 are connected to the front and rear of the horizontal traveling carriage 13 and the toothed pulley 19 is driven by a motor (not shown), so that the horizontal traveling carriage 13 travels along the lateral rail 12.

A vertically long frame-shaped frame 20 extending upwardly from the main shaft 3 is cantileveredly fixed to the upper surface of the horizontal traveling carriage 13 and a pair of vertical rails 21, 21 are provided on the frame-shaped frame 20.
The rectangular vertical traveling carriage 22 is mounted on the vertical rails 21, 21 via the sliding block 23 on the lower surface. On this vertical traveling carriage 22, a traveling fluid cylinder 25 is swingably mounted on the above frame 20 by a bracket 24.
The tip of the piston rod 26 is connected, and the vertical traveling carriage 22 is moved to the vertical rail by moving the piston rod 26 forward and backward.
21 Drive over. The frame-shaped frame 20 is provided with shock absorbers 20a at positions corresponding to the front and rear ends of the traveling stroke of the vertical traveling carriage 22.

At the center of the upper surface of the vertical traveling carriage 22 described above, a lifting fluid cylinder 27 is provided.
Is vertically installed, and the cylindrical guides 29 are vertically fixed on both front and rear sides thereof.
The lower ends of the sliding rods 30 inserted through the 28 and the cylindrical guide 29 are connected to the lower elevating frame 31 (see FIG. 2). The elevating frame 31 has the opening and closing fluid cylinder 32 swingably on both front and rear sides thereof, and has two downward arms 34 below it, and is swingably connected to the lower end of the arm 34. The piston rod 33 of the opening / closing fluid cylinder 32 is connected to one end of the L-shaped lever 35. Then, the center of the lower end of the lifting frame 31 and 2
A holder sliding fluid cylinder 36 is fixed to the other end of each L-shaped lever 35, and a holding plate 38 is fixed to the tip of each piston rod 37 of these holder sliding fluid cylinders 36 to hold these three pieces. A plate 38 surrounds the outer periphery of the primary carcass A, opens and closes, and constitutes a carcass holder that holds the primary carcass A when closed.

In the above structure, as shown in FIG.
When 13 is located at the right end of the lateral rail 12 and the vertical carriage 22 is located at the rear end of the vertical rail 21 (upper end in FIG. 1), the carcass stand 4 is placed directly below the vertical carriage 22. The primary carcass A is hung on the arm 5. On the other hand, the elevating frame 31 below the vertical traveling carriage 22 is located at the upper end of its elevating stroke, the piston rod 33 of the fluid cylinder 32 for opening and closing is retracted, and the L-shaped levers 35, 35 are moved to the left and right in FIG. Is open to.

In this state, lower the lifting frame 31 to the set position,
After positioning the primary carcass A in the center of the three sandwiching plates 38, the piston rod of the fluid cylinder 32 for opening and closing.
33 is projected to close the L-shaped levers 35, 35, and the piston rod 37 of the holder sliding fluid cylinder 36 is projected to hold the primary carcass A by the three holding plates 38. Thereafter, the arm 5 of the carcass stand 4 is slightly lowered, the carcass stand 4 is retracted to the position shown by the solid line in FIG. 1, and the arm 5 is pulled out from the primary carcass A.

Next, after the elevating frame 31 is raised to the upper end position of the stroke, the traveling fluid cylinder 25 is driven to advance the vertical traveling carriage 22 to the front end of the vertical rail 21, and the toothed belt 18 of the horizontal rail 12 is further moved. By driving, the horizontal traveling carriage 13 is moved from the solid line position in FIG. 1 to the left chain line position, whereby the vertical traveling carriage 22 is positioned to the left of the shaping drum 1. Then, the elevating frame 31 is lowered to the lower end of the stroke so that the center of the primary carcass A held under the elevating frame 31 coincides with the center of the shaping drum 1, and then the toothed belt 18 is moved in the opposite direction. The primary carcass A is attached to the shaping drum 1 by driving the vertical traveling carriage 22 to the center of the shaping drum 1 by driving the vehicle. And after the dressing is over,
The piston rod 37 of the holder sliding fluid cylinder 36 is retracted to disengage the holding plate 38 from the primary carcass A, and the piston rod 33 of the opening / closing fluid cylinder 32 is retracted to open the L-shaped levers 35 and 35. The elevating frame 31 is raised to move the horizontal traveling carriage 13 to the right in FIG. 1, and the vertical traveling carriage 22 is further retracted to return to the initial position.

In the above embodiment, the carcass stand 4 can be installed on the right side of the vertical rail 21 in FIG. 1 with its arm 5 facing in the opposite direction. Further, instead of moving the carcass stand 4, the lateral traveling carriage 13 can be moved to remove the primary carcass A from the arm 5.

(Effects of the Invention) The present invention provides, from above, an elevating frame that can be moved above the supply side of the primary carcass with respect to the shaping drum in a horizontal direction parallel to the axis of the shaping drum and in a vertical direction perpendicular to the horizontal direction. Since the carcass holder is provided so as to hang it and hold the primary carcass on the lower side of the elevating frame with the axis of the carcass oriented parallel to the axis of the shaping drum, the primary carcass is supported vertically. By preliminarily installing a carcass stand that can be used, the primary carcass on the carcass stand can be automatically picked up, conveyed to the shaping drum, and mounted, and significant labor saving is possible. Further, according to the present invention, since the above primary carcass is hung and conveyed from above, there is no problem when the worker works on the floor.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. A: Primary carcass, 1: Shaping drum, 2: Headstock, 3: Spindle, 4: Carcass stand, 5: Arm, 11: Upper frame, 12: Vertical rail, 13: Vertical traveling carriage, 18: Vertical traveling carriage Toothed belt for movement of, 20: frame-shaped frame, 21: vertical rail, 22: vertical traveling carriage, 25: fluid cylinder for traveling of vertical traveling carriage, 27: lifting fluid cylinder, 31: lifting frame, 32: Opening and closing fluid cylinder, 35:
L-shaped lever, 36: Holder sliding fluid cylinder, 38: Holding plate (carcass holder).

Claims (1)

[Claims] 1. A belt forming drum for laminating and laminating a belt and a tread cap of a radial tire respectively, and a cylindrical primary carcass is deformed into a toroidal shape, and the surface of the belt and the tread cap is formed on the surface of the drum. A shaping drum for depositing and laminating the laminate is arranged on a common axis, and the laminate is conveyed from the belt forming drum to the shaping drum between the belt forming drum and the shaping drum. In a secondary forming device for a radial tire provided with a transfer ring for carrying out, a lateral rail parallel to a common axis of the belt forming drum and the shaping drum and a lateral direction of the transverse direction are provided above a supply side of the primary carcass with respect to the shaping drum. A horizontal carriage is installed to move on the rail. A cantilevered vertical rail extending horizontally above the common axis is attached to the vertical rail, and an elevating frame that vertically elevates below the vertical traveling carriage is mounted on the vertical rail. A secondary molding device for a radial tire, characterized in that a carcass holder capable of sandwiching a primary carcass from below in a posture in which an axis of the primary carcass is parallel to the common axis is provided on the lower side.