JPH0533657B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a radial tire forming apparatus.

(Prior Art) As a radial tire manufacturing apparatus, an apparatus in which components are combined as shown in FIGS. 3 and 4 is conventionally known.

In FIGS. 3 and 4, A is a drum device that assembles the material supplied from the material supply device J into a toroidal shape, and B is a drum device that supports the drum device A so that it can rotate and stop, and the length of the drum is set at the center of the drum. C is a bead set device provided in headstock device B to transfer the bead core to a fixed position in drum device A, and D is connected to headstock device B. The support frame E is placed on the opposite side of the head stock device B with the drum device A in between, and the breaker/tread structure assembly drum device, F supports the drum device E so that it can rotate and stop, and expands and contracts the outside diameter of the drum. The support device F is installed on the support pedestal D. Further, G is a material supply device to drum device E, and H runs on a track on pedestal D to transport the breaker/tread structure assembled on drum device E to the center position of the toroidal carcass layer on drum device A. I is a 180 degree rotatable bead set device equipped on transfer device H, J is a material supply device to drum device A, and K is a crimping device used for crimping the carcass layer or the carcass layer of the breaker tread structure. The tire manufacturing process of the tire manufacturing apparatus comprising the above-mentioned devices will be explained with reference to FIGS.

() First, as shown in FIG. 5, the operator sets the required bead cores in the bead setting devices C and I. Further, necessary materials such as sidewalls, chiefs, inner liners, carcass, etc. supplied from the material supply device J are wound around the drum device A according to a predetermined procedure and cut into a predetermined length.

() Next, as shown in FIG. 5, the bead cores are placed in a predetermined position by moving the bead setting devices C and I to the center of the drum device A. The bead core prepared at a predetermined position is pressed against the carcass layer by a bead gripping device in the drum device A.
Thereafter, both bead setting devices C and I release their bead cores and return to their standby positions, and the carcass layer on the drum device A is deformed into a toroidal shape as shown in FIG. 5. If necessary, press the side wall of the carcass layer using the crimping device K.
Crimp even more firmly. Further, these operations are performed by button commands by the operator after the above operations () are completed. During this time, the operator wraps the breaker tread supplied from the material supply device G on the drum device E according to a predetermined procedure to assemble the breaker tread structure.

() During the assembly of the breaker/tread structure, the bead setting device I, which released the bead core, rotates on its way back to the drum device E side of the transfer device H, and becomes the state shown in Fig. 5, and the bead setting device I and The transfer device H is kept on standby in this state until the breaker tread assembly is completed.
During this time, the worker is engaged in assembling the breaker/tread structure following the work in () above, and once the breaker/tread structure is completed, the worker transfers the transfer device H onto the drum device E to assemble the breaker/tread structure. Grasp from the outside. After gripping is completed, the outer diameter of the drum device E is reduced, and the breaker/tread structure is transferred from the drum device E to the transfer device H. Next, the transfer device H starts transferring it to the drum device A side, and the bead set is set on the way. Device I rotates and transfers drum device E and transfer device H.
located between.

() The transfer device H further moves toward the drum device A, and at the end point, as shown in FIG. 5, the center of the breaker tread structure is aligned with the center of the toroidal carcass layer on the drum device A.
Stop. The toroidal carcass layer is further expanded in its outer diameter and brought into close contact with the inside of the externally prepared breaker tread structure.
Thereafter, the transfer device H releases the breaker/tread structure, rotates the bead set device I clockwise while moving toward the drum device E, and changes the relative relationship between the transfer device H and the bead set device I to the fifth position.
Set it to the state shown in the figure. Here, the toroidal carcass layer and the breaker tread structure are finally crimped by the crimping device K.

() The transfer device H moves the bead set device I to the fifth
In the state shown in the figure, move to the drum device A side,
Stop and grasp the completed green tire from the outside. After the gripping is completed, the bead gripping device operated in the above step is released, and the green tire is transferred from the drum device A to the transfer device H.
Transfer device H that grips green tires from the outside
moves toward the drum device E and stops on the way. The worker prepares to take out the green tire by hooking the hanging tool shown in FIG. 5 onto the green tire. Thereafter, the transfer device H releases its grip on the green tire, and the green tire is removed from the device. After removing the green tire,
The transfer device H and the bead setting device I return to the state shown in FIG. 5, and thereafter repeat the same operations to manufacture a green tire.

(Problems to be Solved by the Invention) The conventional radial tire forming apparatus described above has no particular problem in manufacturing high-quality tires, but has not achieved satisfactory results in terms of productivity. That is, when producing green tires using the conventional equipment operated by one worker, (1-1) While the carcass constituent material is being wound on the drum equipment A side, the breaker and
The treaded structure is not prepared.

(1-2) The breaker/tread structure must be assembled between the start of position preparation by bead set devices C and I and the deformation into a toroidal shape by drum device A, but generally the time required to assemble the breaker/tread structure is It takes longer than the time from the start of preparing the bead to the fixed position to the deformation into the toroidal shape, and on the drum device A side,
It is necessary to wait for the completion of the breaker/tread structure. The above process () of the previous cycle N
Use this time to partially prepare the breaker/tread structure to be used in the next cycle (N+1), and prepare the bead/fixed position in the process of the next cycle (N+1) to transform it into a toroidal shape. It is possible to complete the structure by performing the following operations when assembling a structure with simply laminated breaker layers, but it is not possible to assemble a breaker-tread structure with a special breaker layer of folded structure. , there is still a lack of time.

(1-3) As is clear from the above step (), while the completed green tire is released from the drum device A and the green tire is taken out of the device, the worker cannot engage in green tire production work.
Moreover, since it does not have any productive effect as a device, time is lost.

(1-4) Furthermore, the above-mentioned method of taking out and holding a green tire is undesirable as it gives local distortion to the green tire before it is vulcanized.

(1-5) Placing one worker on each side of the drum device A and E will slightly improve the productivity of the device, but this will cause a loss in the actual working time of the workers, and There is no improvement in terms of productivity.

Furthermore, the conventional radial tire forming apparatus has the following features:
In addition to the productivity issues mentioned above, there were the following problems.

(2) When installing the beads on the carcass drum,
The bead and carcass drum must be strictly coaxial. However, in the conventional molding device,
Since the bead setting device C is reciprocated by a guide shaft mounted on the drum support frame D, it has been impossible to make them coaxial. Furthermore, since the bead setting device I rotates and reciprocates on the tread structure transfer device H, coaxial installation is impossible, which deteriorates the quality of the tire.

(3) Since the bead supply device C cannot be moved to the left from the carcass drum position, it is necessary for the operator to hold the beads by hand and feed the beads as they pass through the carcass drum. However, since the inner diameter of the bead and the outer diameter of the drum are close to each other, it is not easy to pass the bead over the drum, and it takes a long time to supply the bead. Further, since the bead supply device I performs a rotational movement as shown in FIG. 5, it cannot supply beads unless it is stationary, which restricts the time period for supply work and reduces work efficiency. Furthermore, it was impossible to automatically feed beads to the bead setting device.

(Means for Solving the Problems) The present invention addresses the above-mentioned problems, and consists of a belt/tread structure assembly drum E and a carcass drum device A arranged on the same axis and facing each other.
and a belt/tread structure transfer device H that reciprocates between them, the bead supply device L for supplying the first and second beads is connected to the belt/tread structure assembly drum E. The bead feeding device is installed so as to be removable between the carcass drum device A and the first and second beads prepared on the bead feeding device L, and whose axial center coincides with the axial center of the carcass drum device A. First and second bead setting devices C and I are received from L and installed at fixed positions on the same carcass drum device A.
, bead supply device position C ₂ , I ₂ , carcass drum position C ₃ , I ₃ , and standby position outside carcass drum device A
A radial tire forming device is characterized in that it is installed in a reciprocating manner on a track between C ₁ and I ₁ , and its purpose is to automate the supply of beads to a bead setting device, and to The degree of freedom in the time period for supplying beads to the supply device can be increased, and as a result, work efficiency can be improved and productivity can be improved. Another object of the present invention is to provide an improved radial tire forming apparatus that allows the beads and the carcass drum to be coaxial when the beads are set on the carcass drum using a bead setting device.

(Function) The radial tire forming apparatus of the present invention is constructed as described above, and the first and second bead setting devices C and I pass through the carcass drum device A.
After receiving the beads on the bead supply device L, the beads are placed on the carcass drum device A, so that the work of supplying the beads to the bead supply device L is automated, and this supply work can be performed at any time during the molding operation. As a result, work efficiency is improved and productivity is improved. Also, the first and second bead setting devices C,
I is the bead supply device position C ₂ , I ₂ and the carcass drum position C ₃ , I ₃ and the standby position outside the carcass drum device A
Since the bead reciprocates on the orbit between C ₁ and I ₁ , when the bead is set on the carcass drum device A by the bead setting devices C and I, the bead and the carcass drum device A become coaxial.

(Example) Next, the radial tire molding apparatus of the present invention will be explained using an example shown in FIGS. 1 and 2. A carcass drum device B, which forms the carcass drum device into a toroidal shape, supports the carcass drum device A such that it can rotate and stop, and is equipped with a mechanism for synchronously changing the length of the drum in the left and right direction around the center of the drum. The head stock device C is the first bead setting device that is the most characteristic feature of the present invention.The first bead setting device C runs on a track laid on a pedestal D, and sets the bead (for the right side) at _two points C. ), hand over the bead at C ₃ points, and wait at C ₁ point. Further, D is provided with a running track for the conveying device H and the first and second bead setting devices, and a mount for fixing the headstock device B support device F, and E is on the opposite side of the headstock device B with the carcass drum device A in between. The drum device F for assembling the breaker/tread structure is a supporting device that supports the drum device E such that it can rotate and stop, and is equipped with a mechanism that expands and contracts the outer shape of the drum, and is installed on a pedestal D. . In addition, G is a material supply device to the drum device E, and H is a material supply device that runs on a track on the pedestal D to feed the material to the drum device E.
A transfer device that transfers the breaker tread structure assembled above to the center position of the toroidal carcass layer on the carcass drum device A, I is a second bead set device that is the most distinctive feature of the present invention; The device I travels on a track laid on the mount D, receives beads (for the left side) at _two points I, delivers the beads at _three points I, and waits at _one point I. Further, J is a known material supply device to the carcass drum device A, K is a known crimping device used for crimping the carcass layer or the carcass layer of the breaker/tread structure, and L is a bead supply device. , drum devices A and E
is arranged coaxially with and reciprocates between a position outside the device and receives the first and second beads outside the device,
The beads are moved into the apparatus and supplied to the first and second bead setting apparatuses C and I. Further, M is a tire take-out device which receives the finished green tire taken out from the carcass drum device A by the transfer device H and takes it out of the device.The above devices constitute the radial tire molding device of the present invention.

Next, the operation of the radial tire forming apparatus shown in FIGS. 1 and 2 will be specifically explained. First, the positions of each device will be explained.

C ₁ and I ₁ are the first bead setting device C and the second bead setting device
C ₂ and I ₂ are the bead supply device positions of the first bead setting device C and second bead setting device I, and C ₃ and I ₃ are the standby position of the first bead setting device C and the second bead setting device I. The carcass drum position of device I is changed depending on the type of tire produced. In addition, _H1 is the standby position of the breaker/tread structure transfer device H, which is used for waiting until it goes to receive the same structure on the drum E, waiting when the received structure cannot be directly transferred to the carcass drum A, and transferring the same structure to the carcass drum. After delivery to the carcass on A, there is a waiting period until the green tire is completed, and the completed green tire is transferred to the carcass drum device A.
After receiving the tire from the tire retrieval device M, the tire is placed on standby until the tire removal device M is ready to receive the tire. Further, _H2 is a stop position where the transfer device H goes to receive and stops after the breaker/tread structure on the drum E is completed. _H3 is the stopping position when the structure is transferred to the carcass on the carcass drum A.

When the green tire on _{the carcass drum A is close to completion, (a) the first and second bead setting devices C and I are on standby at points C 1 and} I shown in FIGS. At this time, each device does not grip the bead.

(b) The bead supply device L and the tire take-out device M are:
As shown by the two-dot chain line in FIG. 1, the bead is placed on standby at a position outside the device, and then moved to a predetermined position on the bead supply device L, that is, the delivery position when the bead is moved into the molding device.
Beads of the first bead setting device C (for the right side) and beads of the second bead setting device I (for the left side) are prepared at positions corresponding to C 2 and _{I 2 .}

(c) The transfer device H is at point _H1 and is waiting for the green tire to be completed on the carcass drum A.

(d) On the drum E, the breaker/tread assembly H to be used in the next production cycle is prepared or has been completed.

The following work is performed from the above state.

(1) Transfer device H departs from point _H1 just before carcass drum device A finishes forming the green tire, and after confirming that there are no obstacles in carcass drum device A, enters _H3 and stops. . Next, the gripping claws of the transfer device H contract in diameter to grip the green tire at its outer periphery, the pressure inside the green tire is then discharged, and the bead gripping portion of the carcass drum device A contracts in diameter to release the green tire. The carcass is transferred from the carcass drum device A to the transfer device H.

(2) When the transfer device H returns to _H1 , the bead supply device L and the green tire take-out device M enter the device, and the first and second bead setting devices C and I depart. When it is confirmed that the bead supply device L and the green tire take-out device M have reached the predetermined positions and stopped, the first and second bead setting devices C and I enter, stop at their respective stopping points, and remove the bead supply device. Grasp the bead on L. During this time, the transfer device H moves to the _H2 position and stops.

(3) When the bead transfer to the first and second bead setting devices C and I is completed, the tire grip of the transfer device H is released, the green tire is transferred to the arm of the green tire take-out device M, and the green tire is transferred to the arm of the green tire take-out device M.
moves to _H1 position.

(4) When the first and second bead setting devices C and I pass the carcass drum device A and reach the C ₁ and I ₁ positions, the next production cycle starts on the carcass drum device A, and the bead setting device Preparatory work is carried out before receiving the information. That is, necessary members such as the inner liner, chief, carcass, and side walls are wrapped and assembled.

(5) When preparations for receiving beads on the carcass drum device A side are completed, the first and second bead setting devices C and I depart to the carcass drum device A side,
C stops at C ₃ points, I stops at I ₃ points, and then the bead attachment part of carcass drum device A expands in diameter,
The beads gripped by the first and second bead setting devices C and I are bonded to the outer periphery of the cylindrical carcass layer, and at an appropriate time, the first and second bead setting devices C and I stop gripping the beads. It is released, moves to standby points C ₁ and I ₁ and stops. Next, a predetermined molding operation is performed on the carcass drum device A, and a green tire is completed.

(6) On the other hand, the tire take-out device M, which has received the green tire from the bead supply device L that has completed supplying beads and the transfer device H, is connected to the first and second bead setting devices C, I and the belt/tread structure transfer device. When it is confirmed that H has moved to a position where it does not interfere with the work, it is transferred outside the molding apparatus and the green tire is discharged. After the green tire is discharged, beads to be used for the next production are received from a molding operator or an automatic supply device at an appropriate time at a location outside the molding device.

(7) Transfer device H that delivered the green tires in step (3) above
is in position _H1 , waiting for assembly of the structure on drum E. After the structure assembly is completed,
Device H moves to _H2 and stops, and
The diameter of the gripping claws is reduced to grip the outer periphery of the structure on the drum E. After completing gripping of the structure, drum E
is reduced in diameter, and the structure is delivered to the transfer device H.
The transfer device H that has been handed over moves to _H1 again and waits until the work on the carcass drum device A side is completed. Upon receiving a command from the carcass drum device A side, it confirms that there are no obstacles on the path, starts from the _H1 position, stops at the _H3 position, and delivers the structure to the carcass layer. After the structure is delivered, it returns to the _H1 position or waits for the completion of the green tire at a position on the drum side that does not interfere with the work of the carcass drum device A. After the green tire is completed, the above-mentioned operations are repeated.

(8) On the other hand, after the transfer device H moves to _H1 after the structure is delivered, the diameter of the drum E is expanded again to a predetermined diameter, and preparation work for the breaker/tread structure is performed.

(Effects of the Invention) The radial tire forming apparatus of the present invention is configured as described above, and the molding device passes through the carcass drum device A of the first and second bead setting devices C and I.
After receiving the beads on the bead supply device L, the beads are placed on the carcass drum device A, so that the work of supplying the beads to the bead supply device L is automated, and this supply work can be performed at any time during the molding operation. As a result, work efficiency and productivity can be improved. In addition, the first and second bead setting devices C and I move along the trajectory between the bead supply device positions C ₂ and I ₂ , the carcass drum positions C ₃ and I ₃ and the standby positions C ₁ and I ₁ outside the carcass drum device A. Since the beads reciprocate above, when the beads are set on the carcass drum device A by the bead setting devices C and I, there is an effect that the beads and the carcass drum device A can be made coaxial.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[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, FIG. 3 is a side view showing a conventional radial tire forming apparatus, and FIG. Its plan view, FIG. 5, is an explanatory diagram of its operation. A... Carcass drum device, C... First bead setting device, I... Second bead setting device,
E... Belt tread structure assembly drum device, H
... Belt/tread structure transfer device, M... Green tire take-out device, L... Bead supply device, C ₁ , I ₁ ... Standby position, C ₂ , I ₂ ... Bead supply device position, C ₃ , I ₃ ...Carcass drum position.

Claims (1)

[Scope of Claims] 1. A belt tread structure assembly drum E and a carcass drum device A that are disposed on the same axis and face each other, and a belt that reciprocates between them.
In a radial tire forming apparatus having a tread structure transfer device H, a bead supply device L for supplying the first and second beads can be moved in and out between the belt/tread structure assembly drum E and the carcass drum device A. The first and second beads, which are prepared on the bead supplying device L and whose axis coincides with the axis of the carcass drum device A, are received from the bead feeding device L and placed on the carcass drum device A. The first and second bead setting devices C and I installed at fixed positions are placed at bead supply device positions C ₂ and I ₂ , carcass drum positions C ₃ and I ₃ and standby positions outside carcass drum device A C ₁ and I ₁ A radial tire forming device characterized in that it is installed in a reciprocating manner on a track between the radial tire and the radial tire. 2. The radial according to claim 1, wherein the bead supply device L and the green take-out device M are installed so as to be removable between the belt/tread structure assembly drum E and the carcass drum device A by a shared in/out device. Tire forming equipment.