JPH053823B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is directed to applying an unvulcanized material to the cylindrical outer circumferential surface of a rotating forming drum or the outer circumferential surface of an unvulcanized tire member already wrapped around the cylindrical outer circumferential surface. This invention relates to a winding/forming device for unvulcanized tire members that wraps and shapes sulfurized tire members.

(Prior Art) Conventionally, unvulcanized material is applied to a rotatable forming drum and the outer circumferential surface of the cylindrical outer circumferential surface of the rotating forming drum or the outer circumferential surface of an unvulcanized tire member already wrapped around the outer circumferential surface of the cylindrical cylinder. It is equipped with an unvulcanized tire component supply device (usually called a savisa) that supplies vulcanized tire components, and once the unvulcanized tire component is wrapped around the above-mentioned outer circumferential surface, the forming drum is temporarily stopped. Then, the worker uses a hand tool to visually cut off the excess uncured tire material (if it has already been cut into one circumference, do not do this). Grasp the vicinity of the unwrapped end (hereinafter referred to as the rear end) of the sulfur tire member with your fingers and join it to the front end with a predetermined lap margin, and if necessary, apply hand rolls or stitch rolls to the joint. A winding/forming device for an unvulcanized tire member is known, which completes the winding/forming work of the unvulcanized tire member by performing the following forming operations.

(Problems to be Solved by the Invention) When an unvulcanized tire member is cut, it shrinks due to its internal stress and becomes shorter in length. The amount of shrinkage at this time differs in the width direction of the unvulcanized tire member due to the composition, temperature, etc. of the unvulcanized tire member. In addition, since there are unvulcanized tire components that cannot be cut, such as ply with steel cord, the worker grasps the rear end of the unvulcanized tire component with his fingers and holds it against the front end with a predetermined lap distance, as described above. Then, if necessary, perform forming operations such as hand rolls or stitch rolls on the joints to wrap and wrap unvulcanized tire parts.
Although the molding work is completed, this work requires skill, which limits the number of workers who can engage in the work, and requires heavy labor. There were also problems with inconsistent quality and lack of productivity.

(Means for Solving the Problems) The present invention addresses the above problems, and includes a forming drum, a rotational drive device for rotating the forming drum, and an unvulcanized tire member in the direction of the forming drum. A first conveying device conveys the unvulcanized tire member, and the front end of the unvulcanized tire member waiting on the first conveying device is transferred to the forming drum, and once returned, the rear end of the unvulcanized tire member is transferred to the forming drum. When the unvulcanized tire member is passed to the forming drum and the unvulcanized tire member is wrapped around the cylindrical outer circumferential surface of the forming drum, and a slight gap is formed between the front and rear ends of the unvulcanized tire member, a second conveying device that jointly pulls the rear end toward the front end and joins the unvulcanized tire member to the front end in a butt state; A device for winding and forming an unvulcanized tire member, characterized in that it is equipped with a positioning presser metal fitting for positioning the front end of the tire,
The objective is to allow even an inexperienced person to easily butt and join the front and rear ends of unvulcanized tire members. Another object of the present invention is to provide an apparatus for wrapping and forming unvulcanized tire members that can improve quality and work efficiency.

(Function) The unvulcanized tire member wrapping/forming device of the present invention is configured as described above, and the unvulcanized tire member is conveyed in the direction of the forming drum by the first conveying device. The front end of the unvulcanized tire member waits on the downstream end side of the first conveying device in the conveying direction, and when the turn for wrapping comes, the second conveying device waits on the first conveying device at the front end of the unvulcanized tire member. is held, conveyed, and passed to the cylindrical outer peripheral surface of the forming drum, and the rotating forming drum starts wrapping the unvulcanized tire member. On the other hand, the second conveying device once returns to its original position, and then holds and conveys the rear end of the unvulcanized tire member, and transfers it to the forming drum. By this time, the unvulcanized tire member has been wrapped around the cylindrical outer peripheral surface of the forming drum, and a slight gap is formed between the front and rear ends of the unvulcanized tire member. the presser presses the front end of the unvulcanized tire member toward the forming drum, and the second conveying device cooperates with the forming drum to pull the rear end toward the front end;
The winding is completed by joining the front end in a butt state.

(Example) Next, the unvulcanized tire member wrapping and forming apparatus of the present invention will be explained using an example shown in FIGS. 1 to 4. 1 is a forming drum;
(If an unvulcanized tire member is already wrapped around the outer circumferential surface 11 of the cylinder, the outer circumferential surface of the unvulcanized tire member), and the outer circumferential wave surface of the cylinder is as shown in FIG. As shown, there is a shoulder part (side part). Further, 12 is a rotating shaft of the molding drum 1, and the rotating shaft 12 is connected to a rotational drive device (not shown). Further, reference numeral 2 denotes an unvulcanized tire member, and the unvulcanized tire member 2 is composed of a sidewall 21 and a bead portion reinforcing member 22. 31~ again
35 is a first conveyance device (servicer) that conveys the unvulcanized tire member 2 in the direction of the forming drum 1;
and a plurality of sidewall feed rolls 31 that rotate so that the circumferential speeds of each other are the same,
A feed roll 32 for a bead reinforcing member, a plurality of feed rolls 33 for a bead reinforcing member that rotate at a peripheral speed slower than the circumferential speed of the feed roll 32 for a bead reinforcing member, and a periphery of the feed roll 33 for a bead reinforcing member. It is composed of a pinch roll 34 that rotates at the same speed as the speed, and a crimping/bonding roll 35 that presses the sidewall 21 and the bead reinforcing member 22 in the direction of the sidewall feed roll 31 for crimping/bonding. The pinch roll 34 and the crimping/bonding roll 35 are connected to the feed roll 3 for the bead portion reinforcing member by a spring or cylinder (not shown).
3 and the sidewall feed roll 31. Further, reference numeral 4 denotes a suction device fixed to the frame, and in this embodiment, a vacuum type suction device is used as the suction device 4. Further, 5 is a suction device of the second conveyance device, and the suction device 5 is a guide rod 52.
It is supported so that it can move forward and backward. Note that the suction device 5 has a drive device for moving the suction device 5 back and forth, but its illustration is omitted. Further, the guide rail 52 is supported by fluid pressure cylinders 53, 53 so as to be movable up and down. Reference numeral 54 denotes a presser metal fitting, and the presser metal fitting 54 is used to press the overhang portion of the front end of the unvulcanized tire member 2 onto the forming drum 1 when joining the cut rear end of the unvulcanized tire member 2 to the front end in a butt state. It is provided to press down slightly in the axial direction, and a presser metal fitting 54 is fixed to the suction device 5. 6 is a knife for cutting the unvulcanized tire member 2; 61 is a drive motor for the cutting knife 6; When cutting the unvulcanized tire member 2, it rotates and moves forward, but at times other than cutting, it retreats so as not to obstruct the passage of the unvulcanized tire member 2. .

Next, the operation of the unvulcanized tire member wrapping and forming apparatus shown in FIGS. 1 to 4 will be explained in detail. Sidewall feed roll 31, bead reinforcement member feed roll 33, and pinch roll 34
By stretching the bead reinforcing member 22, the overhang part 26 of the bead reinforcing member 22 is prevented from being wrinkled during subsequent molding with the forming drum 1, and the bead reinforcing member 22 is stretched and the bead reinforcing member 22 is The front end portion 23 of the unvulcanized tire member 2, which has been crimped and bonded to the member 22 by the sidewall feed roll 31 and the crimping/bonding roll 35, is sucked and held by the suction device 4, and transferred to the first conveying device. 3
1 to 35 are waiting. When it is the turn to wrap the unvulcanized tire member 2, the fluid pressure cylinder 53,
53 operates in the extension direction, and the guide rail 52 and suction device 5 descend directly above the suction device 4 (see 5 in Fig. 1).
5), the vicinity of the front end portion 23 of the unvulcanized tire member 2 is attracted and held. At this time, the adsorber 4 releases adsorption. Next, the adsorber 5 moves forward in the direction of the forming drum 1, but at this time, each roll 31, 3
2, 33, and 34 also rotate synchronously to advance the unvulcanized tire member 2 toward the forming drum 1. The suction device 5 passes the front end 23 of the unvulcanized tire member 2 onto the cylindrical outer circumferential surface 11 of the forming drum 1, and the front end 23 of the unvulcanized tire member 2 is adhered to the cylindrical outer circumferential surface 11 of the forming drum 1. When the suction device 5 is released, the suction unit 5 releases the suction and ascends. Next, the forming drum 1 and each roll 31, 32, 33, 34 rotate synchronously, and the unvulcanized tire member 2 is moved onto the forming drum 1 until the front end 23 of the unvulcanized tire member 2 is at the position 24.
The suction device 5 is wound around and temporarily stopped there, during which time the adsorbent 5 returns to the position shown in solid line in FIG. Next, the adsorber 5
is lowered, and the unvulcanized tire member 2 is transferred to the adsorbers 4 and 5.
Once the unvulcanized tire member 2 is attracted and held, the disc knife 6 rotates and moves forward to cut the unvulcanized tire member 2. When this cutting is completed, the adsorption device 5 is moved forward while the forming drum 1 is rotated to wrap the unvulcanized tire member 2 around it. If the winding is completed as is, the unvulcanized tire member 2 will have been cut at the time of the above cutting so that the front end and the rear end of the unvulcanized tire member 2 face each other with a slight gap. . Immediately before the wrapping of the unvulcanized tire member 2 is completed, the forward speed of the adsorber 5 is reduced. On the other hand, since the forming drum 1 continues to rotate at the same speed, the rear end of the unvulcanized tire member 2 is pulled toward the front end, and the front and rear ends are butt-joined. During this time, the overhang portion of the front end is pressed by the presser metal fitting 54, and both ends are aligned. Once the front and rear ends have been butt-jointed,
The suction of the suction device 5 is released, and it rises and returns to the standby position (see 55 in FIG. 1), and the overhang portion 26 of the unvulcanized tire member 2 is pressed against the molding surface by a stitcher (not shown). After being bonded, the wrapping and molding of the unvulcanized tire member 2 is completed.

(Example) FIG. 5 shows an unvulcanized tire member 2 in which a sidewall 21 and a bead reinforcing member 22 are integrated in advance.
After cutting, supply it to the forming drum 1 while stretching it,
Another example of winding and forming is shown. 1st
The same reference numerals are used for the same parts as in Figs.
is a feed roll that rotates at a peripheral speed slower than that of the feed roll 31, and 36 is a feed roll that rotates at the same peripheral speed as the feed roll 31, and the feed roll 36 is pressed in the direction of the feed roll 31 by a spring or cylinder (not shown). There is. Further, 38 is a guide roll.

Next, the operation of the unvulcanized tire member wrapping and forming apparatus shown in FIG. 5 will be specifically explained. After the unvulcanized tire member 2 in which the sidewall 21 and the bead reinforcing member 22 are integrated in advance is cut, each roll 31, 36, 37 rotates synchronously to The unvulcanized tire member 2 is sent to the forming drum 1 while being stretched. Other functions are similar to those of the apparatus shown in FIGS. 1 to 4.

(Embodiment) FIG. 6 shows still another embodiment in which an unvulcanized tire member 2 cut into a predetermined length is supplied, and 72, 72 are rollers attached to a frame (not shown). , 71 is an endless belt conveyor stretched between the rollers 72, one of which is connected to a drive device (not shown),
The endless belt conveyor 71 includes a suction device 7.
is installed. In this embodiment, a vacuum type adsorber 7 is used.

Next, the operation of the unvulcanized tire member wrapping and forming apparatus shown in FIG. 6 will be explained in detail. The roller 72 is driven to convey the unvulcanized tire member 2, and when the front end of the unvulcanized tire member 2 is located below the suction device 5, the suction device 5 is lowered and the suction devices 5 and 7 are moved. The front end of the unvulcanized tire member 2 is sucked and held, then the roller 72 is reversed to stretch the unvulcanized tire member 2, and the suction devices 5 and 7 are moved at the same speed toward the forming drum 1. Then, the front end of the unvulcanized tire member 2 is adhered to the cylindrical outer peripheral surface of the forming drum 1,
While raising the suction device 5 and returning it to its original position, the molding drum 1 is rotated, and at the same time, the suction device 7 is moved in synchronization with the rotation of the molding drum 1.
When the front end reaches the 24th position after winding,
The unvulcanized tire member 2 is sucked and held by the suction device 5 and moved toward the forming drum 1. The subsequent operation is similar to that of the apparatus shown in FIGS. 1 to 4 above.

(Effects of the Invention) The unvulcanized tire member wrapping/forming device of the present invention is configured as described above, and the unvulcanized tire member is conveyed in the direction of the forming drum by the first conveying device. , waits on the downstream end side of the first conveying device in the conveying direction, and when the turn for wrapping comes, the second conveying device picks up the unvulcanized tire member waiting on the first conveying device. The leading end is held, conveyed and passed over the cylindrical outer circumferential surface of the forming drum, which rotates and initiates the winding of the unvulcanized tire component. On the other hand, the second conveying device once returns to its original position, and then holds and conveys the rear end of the unvulcanized tire member, and transfers it to the forming drum. By this time, the unvulcanized tire member has been wrapped around the cylindrical outer circumferential surface of the forming drum.
A slight gap is formed between the front and rear ends of the unvulcanized tire member, but at this time, the positioning presser presses the front end of the unvulcanized tire member toward the forming drum, and the second The conveying device cooperates with the forming drum to pull the rear end toward the front end, join it to the front end in a butt state, and complete the winding, so even an inexperienced person can easily handle unvulcanized tire parts. The front and rear ends can be easily butt-jointed. It also has the effect of improving quality and work efficiency.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to these embodiments, and can be modified in various ways without departing from the spirit of the present invention.

[Brief explanation of drawings]

Fig. 1 is a side view showing an embodiment of the unvulcanized tire member wrapping/forming device according to the present invention, Fig. 2 is a plan view thereof, and Fig. 3 is a side view showing an embodiment of the unvulcanized tire member wrapping/forming device according to the present invention. 4 is a side view taken along the arrow line in FIG. 3, FIG. 5 is a side view showing another embodiment, and FIG. 6 is a further embodiment. FIG. 1... Molding drum, 2... Unvulcanized tire member,
31-35, 31, 36, 37, 38, or 7
1, 72...first conveyance device, 5, 51, 52,
53... Second transport device, 54... Positioning presser metal fitting.

Claims (1)

[Claims] 1 A forming drum, a rotational drive device that rotates the forming drum, a first conveying device that conveys the unvulcanized tire member in the direction of the forming drum, and an unvulcanized tire member waiting on the first conveying device. The front end of the vulcanized tire member is passed to the forming drum and returned once, and then the rear end of the unvulcanized tire member is passed to the forming drum, and the unvulcanized tire member is wrapped around the cylindrical outer circumferential surface of the forming drum. When the unvulcanized tire member is attached and a slight gap is formed between the front and rear ends of the unvulcanized tire member, the rear end is pulled in the direction of the front end in cooperation with the forming drum and butted against the front end. The tire is characterized by comprising a second conveying device for joining the unvulcanized tire member, and a positioning presser for positioning the front end by pressing the front end of the unvulcanized tire member toward the forming drum during the joining. Wrapping and forming equipment for unvulcanized tire parts.