JPS58134731A - Stitching device for tire molding machine - Google Patents

Abstract

PURPOSE:To obtain a stitching device with a greatly improved operational efficiency, in which the widthwise moving amount of a stitch roller is shortened, by a method in which large numbers of stitch rollers of a narrow width are linearly arranged in parallel and separately energized. CONSTITUTION:Large numbers of stitch rollers 20 arranged vertically in two rows in the front of a rocking plate 15 are rotatably and separately supported by a roller bracket 21. A large number of the stitch rollers 20 are concurrently and pressingly contacted with a carcass ply on a molding drum 2 and also with a tire-constituting part adhered to the surface of the carcass ply, a piston rod 19 is pushed out to slide the rocking plate 15, and the stitch rollers 20 are moved by 1/2 of the axial arranging pitch.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention ki relates to a stainer device d for a tire molding machine.

A tire forming machine is equipped with a band forming drum or a tire forming drum, and after wrapping an inner liner or carcass ply endlessly on these forming drums, a narrow width is applied to the surface of the forming drum while rotating. By pressing the stainer roller and moving the stainer roller at low speed in the axial direction of the forming drum, air interposed between the layers of the inner liner and carcass ply is eliminated, and mutual polymerization of these layers is prevented. The parts are evenly glued together.

However, the conventional tire molding machine mentioned above has a narrow width.
Since the stain rollers are moved symmetrically outward from the center of the drum in the axial direction, one stain roller must be moved in the axial direction for one staining process by the stain rollers. The distance required for this process is about % of the total length of the forming drum, which has the drawback of increasing the working time of the stain roller. In order to eliminate the above drawbacks, the width of the stain roller is set to be as wide as that of the forming drum, and its surface is covered with an elastic layer such as rubber. There is a known method that allows pressure welding, but while it shortens the working time in the case of hills, it requires precision in setting the distance between the forming drum and the stain roller, and if this distance is too wide, , the valleys of the wrapped layer such as the carcass ply wound on the forming drum are not sufficiently pressed, resulting in incomplete air removal between the layers and incomplete adhesion of the layer surfaces.
On the other hand, if the above-mentioned interval is too narrow, wrinkles will occur at the edges due to excessive pressure contact between the peaks of the wound layer, both of which have been a cause of poor quality of the product tire.

This invention greatly reduces the working time for staining by 15% and improves quality by arranging a large number of narrow staining rollers in a straight line and energizing them individually. can be easily obtained.

That is, this invention provides a widthwise swinging plate at the rear of the forming drum so as to be swingable in the front-back direction and slidable in the widthwise direction, and a large number of stain rollers are provided in front of the swinging plate. are arranged in parallel in the width direction by a large number of roller brackets that rotatably individually support these large number of stain inch rollers, and a biasing means that individually biases these large number of roller brackets in the iT direction. This is a stainch device for a tire molding machine, which is characterized by the following. □Examples of this invention are shown below in Figures 1 and 2, and a detailed explanation of the construction. The molding ped 1 is formed into a rectangular frame shape and is fixed on the floor behind the forming drum 2 (see FIG. 2). On the bed l mentioned above, there are 1
A pair of bearing brackets 3, 3 are fixed, and a thick columnar body 4 is erected at the rear end at a medium position. Both ends of a swing shaft 5 in the width direction are rotatably supported by the bearing bracket 3.3, and a pair of left and right side levers 6 are attached to the swing shaft 5.
．． The lower ends of the side levers 6.6 are fixed, and a swing frame 8 is formed by these side levers 6.6 and a stay angle iv7 in the width direction that connects the upper parts thereof. and.

The U-shaped sink 9 (see Fig. 2) fixed to the center of the back of the stay angle 7 is swingably attached to the upper end of the columnar body 4 by a pair of left and right 5-shaped brackets 10.10-. The tips of the piston rods 12 of the first fluid cylinders 11 are connected to each other, and the swinging frame 8 is fixed at an arbitrary inclination angle by the protruding length of the piston rods 12.

A support base plate 13 located above the stay angle 7 and connecting the left and right side levers 6.6 and a pair of front and rear guide rails 14.14 are fixed to the swing frame 8. A pair of left and right sliding blocks 16.16, which are located above the rail 14.14 and are fixed to the lower end of a widthwise long rocking plate 15, are slidably fitted therein. Then, on the left sliding block 16 (see FIG. 1), there is a pair of left and right L-shaped brackets (17) on the support base plate 13.
．． The tip of a piston rod 19 of a second fluid cylinder 18, which is fixed through a second fluid cylinder 17, is connected to the piston rod 19, and the action of the second fluid cylinder 18 causes the swing plate 15 to slide a certain distance left and right.

On the front surface of the swing plate 15, a large number of disc-shaped stain rollers 20 made of metal or synthetic resin are arranged in two rows, one above the other. That is, the large number of stain rollers 2
0 are individually rotatably supported by roller brackets 21, and these many roller brackets 21
Two sliding rods 2, upper and lower, protrude from the back of each
2.22 (see FIG. 2) is slidably inserted into the guide hole 15a115a bored in the rocking plate 15, and the rear protruding ends of the pair of sliding rods 22.22 are stopped. Two coil springs 2 are connected between the F roller bracket 21 and the swing plate 15.
4.24 are respectively compressed along the sliding rods 22.22. Therefore, the upper and lower rows of stain rollers 20.
20 denotes stainer rollers 2 adjacent to the left and right of one row.
The stainer rollers 20 of the other row are arranged with their axial phases shifted from each other so that the stainer rollers 20 of the other row are located in the middle of 0.20.

In the above structure, the inner liner and carcass ply are endlessly wound around the forming drum base 2, and tire component parts such as the placket r and bead pads are affixed to the surface thereof, and then the forming drum 2 is wrapped around the forming drum 2. 1st while rotating
When the fluid pushes out the piston rod 12 of the cylinder 11,
In FIG. 2, the swing frame 8 rotates clockwise, and a large number of stainer rollers 20 are simultaneously brought into pressure contact with the carcass ply on the forming drum 2 and the tire components affixed to its surface. The coil spring 24 that urges the stainer roller 20 forward is compressed. After the forming drum 2 has rotated several times, the second fluid cylinder 1
8 is H: Me 11 The presser rod 19 and the swing plate 15 gradually slide to the left in FIG. The stainer roller 20 continues to move in the axial direction, and when the stainer roller 20 has moved by % of the arrangement pitch in the axial direction, the stainer treatment over the entire length is completed. In this case, each of the multiple stainer rollers 20 is individually biased and slides in the front-rear direction, so that the stainer rollers 20 correspond to the height of tire components such as breaker pads attached to the surface of the carcass ply. Then, the stainer roller 20 automatically moves back and forth to perform stainer processing. Therefore, the swing plate 15 is moved to the stainer roller 20.
By sliding the layers by an arrangement pitch in the direction of the axis h°, it is possible to completely eliminate static electricity intervening between layers such as carcass ply, and to reliably bond the layers together. Note that when the swing plate 15 slides by the above arrangement pitch and the stainer process is completed, the swing frame 8 and the swing plate 15 are returned to the illustrated standby position.

In the above embodiment, the stain roller 20, 1
, 11□F, 8kej). □, □-78□6° Also, the stainer roller 20 may be biased by a cylinder. Moreover, a motor-driven feed screw or a rack and pinion can be used in place of the first fluid cylinder 1 and the second fluid cylinder 18, respectively. Furthermore, it goes without saying that the structure of the guide rail 14 and the sliding block 16 is not limited to the structure of the above embodiment.

As explained above, in this invention, a large number of stain rollers are arranged in a straight line and are biased individually. Therefore, the amount of movement of the stain roller in the width direction is significantly shortened. This greatly improves work efficiency and makes it easy to obtain product tires of good quality.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line ■--■ in FIG. 2: forming drum, 15: rocking plate, 20: stainer roller, 21: roller bracket, 24: coil spring (biasing means). Patent applicant Toyo Rubber Industries Co., Ltd. Agent Patent attorney Takeo Sakano Ryoji Yoshida

Claims (1)

[Scope of Claims] [1] A swinging plate in the width direction is provided at the rear of the forming drum so as to be swingable in the front-rear direction and slidable in the width direction, and a large number of stains are provided in front of the swinging plate. Narora. These stainer rollers are arranged in parallel in the width direction by a large number of roller brackets that rotatably individually support the roller brackets, and a biasing means that individually biases the large number of roller brackets forward. Features a stainer device for tire molding machines. [2] The stainer device for a tire forming machine according to claim 1, wherein the rocking plate is provided slidably in the width direction at the upper end of a swinging frame that is swingable in the front-back direction. [8] The stainer device for a tire building machine according to claim 1 or 2, wherein a large number of stainer rollers are arranged in a plurality of vertical rows. [4] The two adjacent rows of stainer rollers are arranged such that the stainer rollers in the -10,000th row are slightly shifted in the axial direction with respect to the stainer rollers in the other row. A stainer device for a tire molding machine as described in 2.