JPH01174436A - Connecting device of strip member reinforced with steel cord - Google Patents

Abstract

PURPOSE:To contrive to achieve highly accumulate connection by a method in which while a specified press-bonding roller is used, the locus of the mutual adhesion of strip members is changed arbitrarily. CONSTITUTION:When the unbonded triangular part 8 of the rear end of a strip member 7 reaches a point A, the rotation of a forming drum 1 is stopped according to a control program. Next, a feeding unit 6 is operated, and the rod of an air cylinder 15 is extended, and then a slide base 10 is advanced to the performing drum 1. The positions of flanged rollers 30a, 30b and a press bonding roller 39 are set corresponding to the width of the strip member 7. The forming drum 1 is rotated in an arrow direction. Since the press-bonding roller 39 has the inclination theta relative to the rotation axis of the forming drum 1, it is moved in the arrow direction shown by a solid line by the inertial force due to its rolling resistance on the guide rods 19a, 19b, whereby the connection and the press-bonding of the strip members can be freely achieved.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a joining device for steel cord-containing strip members, and more specifically, the present invention relates to a joining device for steel cord-containing strip members, and more specifically, to improve the accuracy of butt joining of strip members by arbitrarily changing the movement locus of a pressure roller. This invention relates to a joining device for steel cord-containing strip members that has improved properties.

[Prior art]

Conventionally, when joining the ends of a steel cord-containing strip member, the strip member in which the steel cords are arranged at a low angle with respect to the longitudinal direction is wound around a forming drum, and the leading and trailing ends are cut to a desired length. Butt-joining was accomplished by pasting by winding it with a conveyor or the like.

However, steel cords or steel belts used for medium to large tires are generally covered with thin rubber sheets (side edge rubber) from both side edges to prevent the ends of the steel cord from being exposed. There is a gauge difference (approximately 1.5 m
) occurs, and when the strip-shaped material is pasted and wound around a forming drum while being pressed by a conveyor or a pressure roller, the thicker side ends of the gauge are more strongly pressed.

As a result, there is a problem in that the tip of the rear end of the strip curves inward when joining and overlaps with the tip, or the center of the joint becomes open. This was devised by paying attention to such conventional problems, and its purpose is to use a simple and inexpensive device to apply a pressure roller to the joining line of the front and rear ends of a steel cord-containing strip member. By arbitrarily changing the locus of movement of the strip member, it is possible to easily respond to changes in the width of the strip member, and to improve the joining accuracy of the front and rear end portions of the strip member. It provides equipment.

(Structure of the Invention) In order to achieve the above object, the present invention includes a supply unit that joins the front and rear end portions of a strip member, a pressure roller that can move forward and backward with respect to the drum surface, and a flange that guides the side edge of the strip member. The pressure roller is configured to include a roller, a drive mechanism that drives the pressure roller in the axial direction, and a locking mechanism. By configuring it so that it can intersect with the axis, the movement locus of the crimping roller can be arbitrarily changed with respect to the joining line of the front and rear ends of the steel cord-containing strip member in response to changes in the width of the strip member. The gist of this is that it is possible to obtain highly accurate joining.

[Embodiments of the invention]

The present invention will be described in detail below based on the accompanying drawings.

FIG. 1 is a front view showing the entire apparatus for pasting the steel cord-containing strip material 7, in which 1 is a rotatable forming drum, 2 is a rotatable forming drum;
indicates the conveyor, 3 indicates the frame, and 4 indicates the conveyor belt.

The pasting conveyor 2 is configured to slide in the longitudinal direction of the pasting conveyor 2 by a drive mechanism (not shown), and the side end of the forming drum 1 swings in the vertical direction.

The mount 5 is attached to the frame 3 so as to straddle the conveyor 2.
A supply unit 6 is mounted on the pedestal 5.

The method of pasting the strip member 7 in this invention is as follows: The strip member 7 cut into a predetermined length is transported onto the conveyor 2, and the conveyor 2 is advanced to below the forming drum 1 (the first (Status shown in Figure 1). At this time, the band member 7
The tip of is located directly below the forming drum l.

Next, for pasting, the conveyor 2 is raised while swinging,
The strip member 7 is stopped at a position where it slightly contacts the outer peripheral surface of the forming drum 1.

Since a known magnet is embedded in the outer circumferential surface of the forming drum 1, when the circumferential speed of the forming drum 1 and the pasting are driven so that the feeding speed of the conveyor 2 is synchronized, the strip material 7 is , is wound around the forming drum 1, and when the triangular portion on the rear end side of the band member 7 reaches just below the forming drum 1, the winding is stopped and the conveyor 2 is swung downward for pasting.

Next, when the forming drum 1 is further rotated clockwise, the triangular portion 8 on the rear end side is not crimped and extends substantially tangentially from the drum surface of the forming drum 1.

When the base of the triangular part 8 reaches point A, the forming drum 10
The rotation is stopped and the supply unit 6 is made to protrude toward the surface of the forming drum 1. Then, by rotating the forming drum 1 again, a butt joint can be obtained.

Next, the configuration of the supply unit 2 will be explained in detail. 2 is a front view of the supply unit 6, FIG. 3 is a plan view of the supply unit 6 seen from the forming drum 1 side, and FIG. 4 is the IV of FIG.
- IV arrow side view is shown, and in FIGS. 2 to 4, 9
is a base frame, which is fixed to the pedestal 5.

Reference numeral 10 denotes a slide base, to which bosses 11 are fixed near both ends in the longitudinal direction, and a rod 12 is fitted and fixed into the bosses 11. The rod 12 is slidably held in a bearing 14 fitted in a block 13 protruding from the base frame 9.

Further, an air cylinder 15 is attached to the base frame 9, and the tip of the rod 16 is connected to the slide base 10 by a bolt 17.

At both ends of the slide base 10, side plays) 18 are provided.
a, 18b are provided and support guide rods 19a, 19b in parallel.

A sliding member 20 is slidably held on the guide rods 19a, 19b, and pins 22a, 22b are supported by plates 21a, 21b fixed in parallel on the sliding member 20.
is supported, and arms 23a, 23b and gear 24 are supported on this.
a and 24b are fitted together via a bearing.

The gears 24a and 24b mesh with each other and are fixed to the arms 23a and 23b, respectively, so that when one of the arms 23a and 23b swings, the other arm also swings in synchronization. ing.

A pin 25 is fixed to the top of the plate 21a,
Further, a pin 26 is fixed to the arm 23b, and a tension spring 27 is mounted between the pins 25 and 26. Therefore, arms 23a and 23b are always held closed.

At the tips of the arms 23a, 23b, a bearing box 28a,
28b is fixed, and shafts 29a, 29 are connected via bearings.
b is supported. At the terminal parts of the shafts 29a and 29b,
Flanged rollers 30a and 30b are fixed.

A stopper loft 31 is attached to the outer end surface of the sliding member 20 and protrudes outward through the side plate 18a, and when the width of the strip member 7 is determined, a screw attached to the side plate 18a is attached. The stopper rod 31 is fixed by a member (not shown) and the sliding member 20 is positioned.

A movable member 32 is held on the guide rods 19a, 19b so as to slide easily via linear bearings (not shown), and a holder 34 is mounted on a pedestal portion 33 of the movable member 32. arc-shaped long hole 3
5 and is fixed by a bolt 36.

A shaft 38 is attached to the holder 34 via protrusions 37a and 37b.
We support this. A pressure roller 39 is rotatably supported on the shaft 38 via a bearing. The angle of the pressure roller 39 can be adjusted within the range of the arcuate long hole of the holder 34.

Further, a locking block 40 is slidably held on the guide rods 19a and 19b, and a stopper rod 41 is attached to the outer end surface of the locking block 40 and extends through the side plate 18b. It protrudes outward.

Once the width of the strip member 7 is determined, the stopper rod 41 is fixed by a screw member (not shown) attached to the side plate 18b, and the locking block 40 is positioned.

This constitutes the locking mechanism.

On the slide base 10, a rodless cylinder 42, which is referred to as a drive mechanism, has a guide rod 19a,
19b, this rodless cylinder 4
2 and a guide rod 43 parallel thereto are held at both ends by brackets 44a and 44b. A detent fitting 46 is attached to the slider 45 of the rodless cylinder 42, and a protrusion 47 fits into the guide loft 43. When compressed air is supplied from either of the air supply holes 49a, 49b of the tube 48 of the rodless cylinder 42, the slider 45 moves away from the air supply side.

An L-shaped metal fitting 51 is attached to the side plate 50 of the pedestal portion 33, and the other end of the L shape projects over the passage of the slider 45. Therefore, when the movable member 32 is at the right end in FIG. 2 after joining the strip member 7, the slider 4 is supplied with air from the air supply hole 49a.
5 can be moved to the left side and brought into contact with the L-shaped fitting 51, and the moving part 32 can be sent to the left side.

When the moving member 32 moves until it comes into contact with the locking block 40, air is supplied from the air supply hole 49b, and the slider 45 is returned to the right end.

Next, the operation of the method for joining the strip member 7 will be explained.

In FIG. 1, when the unpressed rear end triangular portion 8 of the strip member 7 reaches point A, the forming drum 1 stops rotating according to a preset control program.

Next, the supply unit 6 is activated, the rod of the air cylinder 15 is extended, and the slide base 10 moves forward toward the forming drum 1. Since the positions of the flanged rollers 30a, 30b and the pressure roller 39 are set in accordance with the width of the strip member 7, the state is as shown by the solid line in FIG. 5.

Initially, the flanged rollers 30a and 30b are close to each other and in a closed state, but the change in curvature due to the difference in diameter of the forming drum is dealt with by the tension spring 27, and the rollers are always kept in contact with the outer peripheral surface of the forming drum 1. can be contacted.

Here, if the band-shaped member is provided with side edge rubber 52, it is preferable that the initial position of the pressure roller be on the inside where the side edge rubber 52 comes off.

Next, the forming drum 1 is rotated in the direction of the arrow.

Since the pressure roller 39 is inclined at an angle θ with respect to the rotation axis of the forming drum 1, component force due to transfer resistance is generated, and the pressure roller 39 rotates on the guide rod 198, 19b in the direction of the arrow shown by the solid line. Moving.

When the pressure roller 39 reaches the final position shown by the imaginary line, the rotation of the forming drum 1 is stopped, and during this time the pressure roller 39 moves along the trajectory shown by the thick dotted line. The rear end triangular portion 8 of the strip member 7 is gently and minutely displaced in a certain non-local range due to the rotational resistance of the pressure roller 39, and this is applied to the flanged rollers 30a, 3.
Coupled with the guiding effect of Qb, it sequentially contacts the tip triangular portion 35 in a centered state, and a complete butt joint 54 is obtained.

The tip portion 55 of the rear triangular portion 8 may be deformed, so it is better not to press it too much.

Therefore, it is preferable that the trajectories of the pressure rollers 3 and 9 gradually approach the butt joint, as shown by the thick dotted line in FIG.

In addition, the function of the pair of flanged rollers 30a and 30b can also prevent the protrusion of the rear end side tip portion to the outside, which is likely to occur during manual butting work. When the bonding is completed, the slide base 10 is moved backward, the slider 45 of the rodless cylinder 42 is operated, and the pressure roller 39 is sent in the direction of the arrow shown by the dotted line, thereby completing preparations for the next bonding.

In order to change the locus of the pressure roller 39, the inclination angle θ and the initial position positive pressure may be changed.

In the embodiment of this invention, a strip member W into which a steel cord is inserted
The conveyor 2 is used for pasting to bring the tip of the band member W into contact with the outer peripheral surface of the forming drum 1 and wind it around the forming drum 1. However, in this invention, the triangular unpressed portion on the rear end side of the band member W is attached. Since the purpose is to press and join the tip side triangular part, other means, such as means for holding and transporting the tip of the band-shaped member W and feeding it onto the forming drum 1, are required.
It is clear that any device comprising a combination of support means, such as a roller conveyor, and crimping means, such as a crimping roller, may be used.

In that case, the bonding apparatus of the present invention may be installed independently by providing a frame near the outer peripheral surface of the forming drum 1.

〔Effect of the invention〕

This invention includes a supply unit that joins the front and rear end portions of a strip member as described above, which includes a pressure roller that can move forward and backward with respect to the drum surface, a flange roller that guides the side edge of the strip member, and a pressure roller that is attached to an axis. The pressure roller is configured to include a drive mechanism that drives in the direction of the drum and a locking mechanism, and the pressure roller is held on the slider base so as to be slidable in the drum axis direction and to be able to intersect with the drum axis within the pressure bonding surface. Because of this structure, the following excellent effects can be achieved.

(a) The locus of movement of the pressure roller can be freely changed with respect to the joining line between the front end and the rear end of the steel cord-containing strip member.

(bl) By selecting the crimp length in the circumferential direction, a desired correction amount for the length of the strip member can be obtained, and a preferable butt joint can be obtained.

(C) Regarding the width change of the steel cord-containing strip member,
Can be easily handled.

(d) A simple and inexpensive butt joint device can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the entire device for pasting a band-shaped member according to the present invention, Fig. 2 is a front view of a unit for supplying the band-shaped member, Fig. 3 is a bottom view of Fig. 2, and Fig. 4 is m in Figure 3
FIG. 5, a side view taken along the V-mV arrow, is an explanatory diagram showing a method for attaching the end portion of the strip member. 1... Forming drum, 6... Supply unit, 7...
Band member, 9... Base frame, 10... Slide base, 30a, 30b... Flange roller, 39
... Pressure roller, 31.40.41 ... Locking mechanism. Agent Patent Attorney Nobuo Ogawa −

Claims (1)

[Claims] A steel cord-containing belt-like member is attached to a molding drum that is driven to rotate in a predetermined direction while being crimped via a supply unit, and the ends are joined after the crimping is released. In the bonding device, the supply unit includes a pressure roller that can move forward and backward with respect to the drum surface, a flange roller that guides the side edge of the strip member, a drive mechanism that drives the pressure roller in the axial direction, and a locking mechanism. , wherein the pressure roller is held on a slide base so as to be slidable in the direction of the drum axis and to be able to intersect with the drum axis within the pressure bonding surface. Bonding equipment.