JPS6089344A - Method of molding band - Google Patents

Abstract

PURPOSE:To make a molding apparatus small-sized and the structure simple, by sticking rubbery materials onto a drum, which is being rotated forward and backward alternatively, with the upper surface and undersurface thereof alternatively directed upward, when a band that is used for the production of a tire is molded. CONSTITUTION:A rubbery material 12 accompanied by a liner 10 is separated from the liner 19 at a roller 19, and when a drum 17 is rotated forward, the rubbery material 12 is stuck to the drum 17 with the upper surface directed upward. After the rubberlike material 12 has been stuck in a length corresponding to the one rotation of the drum, the rotation of the drum 17 is stopped, then the rubberlike material 12 is cut, and the ends thereof are joined. Then the leading end of the rubberlike material 12 is passed along a reversing roller 39 so that the rubbery material is turned, and the leading end is inserted between a sticking roller 41 and the drum 17. Then when the drum 17 is rotated backward, the rubbery material 12 is stuck onto the previously wound rubbery material 12. These operations are repeated alternatively to mold a band with a plurality of layers.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of forming a band used in manufacturing tires.

Conventionally, a cylindrical band, such as a carcass band, has been formed as follows. In other words, without a lid, a rubber-like material (carcass ply) in which a cord is embedded, which is inclined in one direction with respect to the rotational axis of the drum, so that the other end is closer than the negative end, is placed on one roll together with a liner. The liner and the rubber-like material are separated from each other at Paste one round and cut.Next, a rubber-like material (carcass ply) in which a cord is embedded that is inclined in the other direction with respect to the rotation axis of the drum.
is unwound together with the liner from the other roll, then the liner and the rubber-like material are separated, the liner is taken up by the other take-up roller, the rubber-like material is fed to the drum by the other servicer after forming a festoon, Paste one round on the rubber-like material and cut.

By repeating such operations, a plurality of layers of bands in which the inclination directions of the cords are alternately reversed are formed. However, in such a band forming method, since two cerpisers are required, there is a problem that the entire device becomes large and the equipment cost becomes high.

Moreover, since two servicers are used alternately, there is a problem that the structure becomes complicated.

This invention was made by focusing on the above-mentioned problems.
The purpose is to make the molding equipment small, inexpensive, and simple in structure.

This purpose is achieved by unwinding the rubber-like material from a roll on which the rubber-like material is wound, and pasting the unwound rubber-like material alternately on the front and back sides on a drum that rotates once in forward and reverse directions. can be achieved.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In Figure 1.2, (1) is a frame installed on the floor (2)-H, and this frame (1) has vertical beams (3), (4), horizontal beams (5), Support beam (
6) and a mounting beam (7). (8) is a movable carriage, and a roll (9) is rotatably supported on the upper part of the movable carriage (8). This roll (9)
consists of overlapping belt-shaped liners (00) and belt-shaped rubber-like material (11) reinforced by inclined cords (11).
1 (see Figure 5(a)). A winding roller (13) for winding up the liner (00) is rotatably supported at the bottom of the movable truck (8). (14) is the first guide roller rotatably supported at the tip of the beam (7), (151(+6
) are second and third guide rollers rotatably supported at both ends of the support beam (6). The first of these,
2nd and 3rd guide rollers (+41 (+5) (+6)
is parallel to the roll (19), and as a whole the roll (
A guide mechanism ( ) that guides the liner ( 10 ) and the rubber-like material ( 12 ) unwound from the drum 071 (
18). (19) (211! (2+1) are the first, second, and 30th-la rotatably supported by the horizontal beam (5), and these first, second, and 30th-la (1
9)(2n)C2n is parallel to the roll (9).

Then, at the 10th la (19), the molded liner (10) and the rubbery material (one is separated. That is, the 10th la (19) is the liner 00) and the rubbery material (1). It becomes the separation point from +2. (221 (23)
is rotatably supported on a vertical beam (3) and a roll (9)
The 4th and 50th -ra are parallel to . The second and third mentioned above
, 4th and 5th rollers (2Q) (211(22+(2
31K C, rubber-like material 02I in No. 10-L00
The liner (10) separated from the liner (10) runs in contact with the liner (10), and after separating from the 50th liner (23), it is taken up by a take-up roller (trough).
4th, 50th - La (+9) (20) (2+1f221
(23+ and the take-up roller (13) collectively constitute a take-up mechanism 041, which takes up the liner (10) from the rubber-like material (12) and removes the separated liner (10). A motor (25) is attached to the base end of the attachment beam (7), and a sprocket (271) is attached to the output shaft (2G) of the d motor Q. A chain (2) is passed between the sprocket (281 and the sprocket (2η) rotatably supported at the base end).
, second and third guide rollers (]4) (151 (16) and first, second, third, fourth, 50th-ra (1, 91 (2)
As shown in FIG. 3, sprockets (301 (3++) are attached to both ends of +211T22+ +231, respectively, and a pair of chains (321 As is clear from the above description, these chains (32) (331) extend along the running path of the liner (10) and are driven by the motor (25) to take up the winding roller (13). ) move independently in its longitudinal direction.These chains 133 (33)
Both ends of a carrier par (34) as a holding member are fixed to the carrier par (34), and this carrier par 941 is attached to the chain (32).
It moves by running 1 (33). The tip of the liner (10) is hooked and held on this carrier par 041 at the start of work. Said 10th-la (1!1
As shown in Figure 1, a support sign is installed almost directly below the
On this support stand (35), the drum (1η) parallel to the 10th-L inclination is rotatably supported.
The outer diameter of η can be continuously expanded and contracted to accommodate changes in tire size, and it can also be rotated in the forward or reverse direction around the rotation axis (A). A rubber-like material 02) separated from the liner 00) is applied onto this drum (17). (3G) is a drum (17)
This is a workbench installed on the opposite side of the roll (9), and an operator performs work on this workbench 0()). The 10th line (191) serving as the separation point is a critical vertical plane (191) which is a distance l1iIt(1)100- away from the vertical plane (P) containing the rotation axis (A) of the drum (17) toward the roll (9). R)
It is located at (9) anti-roll positions. Here, the distance (
A) exceeds 100 CrrL, the operator must remove the drum (1
Even if you reach out your hand across η, you will not be able to reach it, so the distance (
1) is 100G.

A bracket 08) supporting a shaft (37) is attached to the tip of the horizontal beam (5), and a reversing roller acid is rotatably supported on this shaft (3).
37), the base end of an arm frame extending toward the roll (9) is swingably supported, and the tip of this arm f4+)) is rotatably supported by a pasting roller (41) made of sponge. . A lever (4) is attached to the base end of the arm (40).
2) is formed, and this lever (4) has a horizontal beam (5).
) fixed to the cylinder (431 piston rod (4
The tips of 4) are connected. Then, the rubber-like material (12) separated in the tenth-ra (19) is transferred to the drum (1).
When η rotates forward, the front side passes through the reversing roller (39) and is pasted onto the drum OD, while when the drum 07) rotates in the reverse direction, it is reversed to the back side by the reversing roller (39) and then pasted by the pasting roller (41). Drum (1) while being pressed
Can be pasted on No. Support stand (arm (45) for 3 tows)
The base end of the arm (451) is rotatably supported, and a drum touch roller (4f9) that can come into contact with the outer periphery of the drum ((η) is rotatably supported at the tip of this arm (451).

As shown in Fig. 4, the rotation of this drum touch roller (4G) is caused by the sprocket (4η, chain (IL sprocket mill 49) 60), chain I! 51), Sprocket 6
z to the bevel gear 63), and the rotation of this bevel gear (!'i31 is transmitted to the bevel gear example via the tuned shaft 64). The rotation of this bevel gear mark is
A clutch 6G) that is connected when the drum 0η rotates in the normal direction, a clutch 68) that is connected when the drum surface rotates in the reverse direction, and a sprocket 6G) that is connected when the drum surface rotates in the normal direction.
transmitted to. This sprocket) (The rotation of 60j is the chain (6I), sprocket (62) + 63), chain (64), sprocket (turn);), chain (671, sprocket (68), arm (69)
) is rotatably supported at the tip of the take-up touch roller (7).
0). The base end of this arm shaft is rotatably supported by the vertical beam (3) (see Figure 1), so that the take-up touch roller (711) is connected to the take-up roller (13).
The outer periphery of the liner (10), specifically the rolled-up liner (10), can be contacted. In addition, (71) is an air motor, and the rotational force of this air motor (71) is transmitted by a reducer (721, sprocket) (73), a chain C? 41, sprocket)
(751 to the sprocket) (60), and the slip between the drum touch roller r41i) and the drum (17) and the slip between the take-up touch roller (7 (1) and the take-up roller (3)) are compensated for. Again in FIG. 1, (7G) is a cylinder that is swingably supported by a bracket aη fixed to a support base 051, and the tip of the piston rod σ8) of this cylinder aO is connected to the arm (7G).
45), and the operation of this cylinder (76) causes the drum touch roller (46) to come into pressure contact with the drum (17). On the other hand, 6 (g) is a cylinder swingably supported by the vertical beam (3), and the tip of the piston rod @+)) of this cylinder σ9) is connected to the arm (69).
Due to the operation of this cylinder σ9), the winding touch roller ff
0) is pressed against the take-up roller (13). The aforementioned arm (4511 drum touch roller (46), Sjo)
y Tsu) (47) (4g+ +5 (11r52116
011 (621163)(651(66)(68)(
73) (75), Chain (48) I! ill sheath 1 (
64) (6η64), bevel gear (53) shaft, synchronized shaft 64), clutch C561 (58), gear group Kusunoki 15
9), air motor (71), reducer ('72, arm shaft, take-up touch roller (7 (1), cylinder (7G) (7
9) constitutes a tuning mechanism as a whole, and this tuning mechanism (
80) transmits the rotation of the drum 07) to the take-up roller (13) to match the circumferential speed of the drum (1η) with the take-up speed of the take-up roller 03, that is, the running speed of the liner (10). Note that the clutch ('+G) I! In i8), the drum (17) rotates forward and reverse, while the take-up roller (13)
This is necessary because they always rotate in the same direction.

Hereinafter, the operation of one embodiment of the present invention will be explained.

At the start of the forming operation, the tip of the liner (10) wound around the roll (9) is hooked onto the carrier bar (34), and then the motor (25) is activated to move the chain (:'I
21C (31) is run. This causes the liner (1
Cll&-ff, the first, second and third guide rollers (14) of the guide mechanism (18) are pulled by the carrier bar (34).
) (15) (161 and the 1st, 2nd, 3rd, 4th, 50th-ra (1 wing (2Q) 1211 of the winding mechanism (24)
(The liner (10) travels while contacting the rollers (22t23+) one after another. As a result, the liner (10) is easily passed through the prescribed path.The tip of the liner (10)
).

At this time, the rubber-like material (12), which has been carried along with the liner (10) to the separation point, is separated at 10 degrees Celsius (19), and its tip remains on the front surface of the drum (17).
drum (17) as shown in Figure 5(a).
You can ask about ten pregnancies. At this time, the cord (11) embedded in the rubber-like material (12) is oriented in one direction, that is, the cord (II) at one end in the width direction is oriented in the width direction, as shown in FIG. It is slanted so that it is closer to the cord (11) at the other end. Next, cylinder ff6) f
f9) to protrude the piston rod ffQ r8 (11), and then move the drum touch roller (4FD) and take-up touch roller σ [to drum 07] and the take-up roller (13).
Press them into contact with each other. Next, when the drum 0η is rotated in the forward direction, the rubber-like material (121 is on the front side and the drum 0η is
7) Can be pasted on top. At this time, the drum (1710 rotations) is transmitted to the take-up roller (1) through the tuning mechanism, and the liner (10) is wound up on this take-up roller θ row. +(1
Since the winding speed of No. 1 and the circumferential speed of the drum 07) match, the rubber-like material Q2+ is supplied to the drum (17) without being expanded, contracted or deformed. When the drum aη rotates once and the rubber-like material α2 is pasted on the drum θη for one revolution, the rotation of the drum (17) is stopped and the rubber-like material (121) is cut along the cord (11). After that, both ends of the rubber material α2 are joined.Next, the cylinder (431 is activated to move the pasting roller (41) onto the drum (17).
). Next, the operator holds the tip of the rubber-like material (12) with his/her hand and places it along the reversing roller (to).
As shown in Figure 1, turn it over to the back side and insert it between the pasting roller (41) and drum +171. Next, when the drum (1η) is rotated in the opposite direction, the rubber-like material θ
2) is pasted onto the wrapped rubber material (+2i). At this time, the pasting roller (41) presses the rubber material (12 toward the drum 07 immediately after reversing), so the rubber material (+2i) is pasted onto the wrapped rubber material (+2i). Meandering of 12 is prevented and air is removed.This rubber-like material (coat Q of 12)
D]9fFi The M direction is inclined in the opposite direction to the inclination direction of the cords (11) of the rubber-like interest 02 already wound, and these cords (11) intersect with each other. Then, when the drum 07) rotates once and the rubber-like material 0 is wrapped around the drum (1η), the rotation of the drum 07 is stopped. The above-mentioned work, that is, pasting the front side rubber material (121) on the forward rotating drum 0η and pasting the back side rubber material a on the reverse rotating drum (+71), is performed alternately, and the same A multi-layer band is formed of a rubber-like material (121) in which the cords (11) of adjacent layers intersect with each other.

In addition, in this example, a roll (9) on which rubber-like materials (+21 and liner rlf) that overlap each other are wound up, and a rubber-like material (12) and a liner ( A guide mechanism (181) that guides the l rubbery material 0
In the band forming apparatus, the rubber-like material 02 and the liner (10
) is located on the anti-roll (9) side from the limit vertical plane (R), which is 100 crfL away from the vertical plane (P) containing the rotation axis (A) of the drum (17) toward the roll (9). This eliminates the need for a sarpisa with a complicated structure, and also eliminates the need for a festoon, resulting in a smaller overall size. Also,
In this embodiment, the winding mechanism (24) includes a liner (
10), and the winding speed of this winding roller (13) is made to match the circumferential speed of the drum aη by a tuning mechanism (a), so that it is possible to change the tire size. Even if the diameter of the drum Q7 changes as a result of this, and the peripheral speed of the drum a force changes, the liner
0) runs at the same speed as the drum (17), thereby preventing the rubber-like material (121) from expanding, contracting or deforming. Chain C321G33 that extends in a straight line and moves longitudinally independently of the take-up roller (13)
1, and a carrier par C (41) that holds the tip of the chain C321 (3' (liner aO moved by and, the liner (00) can be quickly and easily guided to the prescribed path at the start of work.
Rubber-like materials (121) having different angles and widths may be continuously wound around 10). In this way, changes in tire size can be easily accommodated, and it is suitable for small-lot production.

As explained above, according to the present invention, the band forming device can be made small, inexpensive, and simple in structure.

[Brief explanation of drawings]

FIG. 1 is a schematic side view showing an embodiment of the present invention, FIG. 2 is a side view of the main part to explain the movement of the rubber material and liner, and FIG. 3 is a perspective view of the main part near the guide mechanism. Figure 4 is a diagram explaining the power transmission path of the tuning mechanism, and Figure 5falf
Figure b1 is a plan view for explaining the operation. (9)...Roll 02...Rubber-like material (1
7)...Drum patent applicant Brideston Tire Co., Ltd. Agent Patent attorney Ta 1) Toshio Figure 5(0) Figure 5(b)

Claims (1)

[Claims] A rubber-like material is unwound from a roll on which the rubber-like material is wound, and the unwound rubber-like material is pasted alternately on the front and back sides on a drum that rotates once in forward and reverse directions, and the same rubber is placed on the drum. A molding method that involves molding a multi-layered band made of shaped materials.