JPH02295727A - Method and apparatus for taking out finished green tire - Google Patents

Abstract

PURPOSE:To shorten the taking-out time of a finished green tire and to enhance productivity by providing grasping devices advancing to and receding from the intersecting point of the center line of a frame in the vertical direction thereof and the revolving center line passing the center of a revolving shaft, and holding the outer peripheral surface of the finished green tire at several places around a revolving frame. CONSTITUTION:Grasping devices 17a, 17b, 17c, 17d, which advance to and reced from the intersecting point of the center line Y1-Y2 of a support frame 11 in the vertical direction thereof and the revolving shaft axis X1-X2 centering around revolving shafts 15a, 15b and hold the outer peripheral surface of a finished green tire W are mounted at an angle of about 45 deg. at several places around a revolving frame 14 formed into an almost octagonal shape. Each of the grasping devices 17a-17d is constituted so that a bellows block 18 is fixed to the revolving frame 14 and an air cylinder 20 is mounted to the bellows block 18 and a shoe plate 24 having a proper curved surface for grasping the finished green tire W without deforming the same is mounted to the output rod 21 of said cylinder 20.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method and device for taking out a completed green tire, and more specifically, the present invention relates to a method for taking out a finished green tire and an apparatus therefor, and more specifically, the finished green tire is taken out from the tire molding machine side using a dedicated taking out device for the finished green tire. The present invention relates to a method and apparatus for taking out a completed green tire, which makes it possible to automatically take out the tire and send it to a conveying means in a predetermined orientation in the next process.

[Conventional technology]

FIG. 9 shows a schematic configuration diagram of a second-stage molding machine for general radial tires, in which 1 is the main body of the second-stage molding machine, 2a,
2b is a rotatable main shaft, and this main shaft 2a. 2b includes a pair of left and right expandable second stage forming drums 3a, 3b.
are attached, and can be moved toward and away from each other by an appropriate mechanism (not shown). The first stage green tire made by the first stage molding machine is mounted on the second stage forming drums 3a and 3b, and is inflated into a toroidal shape, with tire constituent materials called breaker and cap tread attached to the top of the tire. are assembled to form the completed green tire W. Further, 4 indicates a conveying device installed on the side of the second stage molding machine main body 1 so as to be reciprocally movable by a guide mechanism 5,
This conveying device 4 transports endlessly formed breakers and cap treads from the belt forming machine to the second stage forming machine main body 1.
It is intended to be transported to

[Problem that the invention seeks to solve]

By the way, methods and devices for automatically taking out the completed green tire W from the second-stage molding machine as described above are disclosed in, for example, Japanese Patent Publication No. 55-35255 and Japanese Patent Publication No. 62-116.
Although it is disclosed in Japanese Patent No. 68, the completed green tire W will be transferred to the second stage forming drums 3a, 3 using the conveying device 4.
The bead was then taken out from the bead and transferred to another device that grips the inner diameter of the bead, supports it, and conveys it. For this reason,
There is a problem in that the working operation of the conveying device 4 is restricted, which impedes productivity.

In addition, when conveying the removed completed green tire W horizontally to the next process using a conveyor, etc., it is difficult or impossible to select the orientation of the completed green tire W, and smooth conveyance is difficult. There was also the problem of not being able to do the work.

Furthermore, other than the method of taking out the completed green tire W from the second-stage forming drums 3a, 3b using the direct conveyance device 4, the method disclosed in Japanese Patent Application Laid-Open No. 53-3481 has been proposed; However, since the transport device 4 has a take-out device on the side that grips the completed green tire W, it is unavoidable that the working operation of the transport device 4 is restricted, and the completed green tire W taken out is held in a horizontal position. When conveying the completed green tire W to the next process using a conveyor or the like, it is impossible to select the orientation direction of the completed green tire W.

[Purpose of the invention]

This invention was devised by paying attention to such conventional problems, and uses a dedicated device for taking out completed green tires.
The finished green tire can be automatically taken out from the tire molding machine and sent out by the conveyance means in the next process in a predetermined orientation, improving productivity and reducing labor due to automatic take-out. The object of the present invention is to provide a green extraction method and device.

[Means for Solving the Problems] In order to achieve the above object, the present invention installs a reciprocally movable finished green tire take-out device between the molding drum of the tire molding machine main body and the conveyance means, and The take-out device is configured to surround a completed green tire around a rotation axis that coincides with the center of the green tire, which is installed horizontally on a frame that is movably suspended, and is capable of rotating in the horizontal direction. At several points around the periphery of the rotating frame, the blade moves forward and backward toward the intersection of the vertical center line of the frame and the center line passing through the center of the rotating shaft, and the outer circumferential surface of the completed green tire. The gist is that a gripping device for holding the device is provided.

[Action of the invention]

This invention is constructed as described above, and when the green tire molding is completed on the tire forming drum side, the take-out device is moved to a position where it wraps around the completed green tire in the vertical state, and the take-out device is moved to several locations in the circumferential direction of the take-out device. The outer peripheral surface of the completed green tire is held by a gripping device that can move forward and backward, and in this state, the take-out device moves to a predetermined position on the conveyance means, turns the completed green tire in a predetermined direction, and then removes the completed green tire from this state. By releasing the completed green tire and feeding it onto the conveying means, the degree of freedom in the belt conveying operation increases, productivity can be improved, and the time required to take out the completed green tire can be shortened. The feature is that the labor required for extraction work is reduced.

[Embodiments of the Invention] Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

Note that the same components as those in the conventional example are given the same reference numerals, and the description thereof will be omitted.

1 and 2 show a schematic front view and a plan view of a second stage molding machine for radial tires according to the present invention, where ■ is the main body of the second stage molding machine, and 2a and 2b are rotatable. A pair of left and right second-stage molding drums 3a, 3b that can be expanded and contracted are attached to the main shafts 2a, 2b.
They can be moved toward and away from each other by a suitable mechanism (not shown).

The first stage green tire made by the first stage molding machine is mounted on the second stage forming drums 3a and 3b and inflated into a toroidal shape, and a tire constituent material called a breaker or cap tread is attached to the top of the tire. It is assembled into a completed green tire W.

4 is a conveying device, from the belt forming machine that forms the breaker and cap tread into an endless shape, to the second stage forming machine main body 1.
In the embodiment of the present invention, the conveyance device 4 is movable by a guide mechanism 5 installed on the floor, but it is also possible to have a guide mechanism 5 on the ceiling side. It is.

In this invention, the device 6 for taking out the completed green tire W, which is separate from the conveying device 4, is connected to the second stage molding machine main body l and the conveying device 4.
It has a guide mechanism (not shown) on the ceiling side so as not to interfere with the guide mechanism 5 of the transport device 4. This guide mechanism allows the take-out device 6 to move in the directions indicated by the arrows ① to ②, as shown in FIG.

Further, 7 in FIG. 2 is a conveyor as a means of conveying the completed green tire W, and 8 is a stitcher device of the second stage molding machine main body l.

3 and 4 show detailed views of the take-out device 6 of the present invention, and 11 is a support frame connected to a guide mechanism (not shown) on the ceiling side and movably suspended, and its lower end It has a gate-shaped base frame 12.

At both lower ends 12a and 12b of this base frame 12,
A frame-shaped revolving frame 14 formed in a substantially octagonal shape is rotatably attached to surround the completed green tire W via the revolving shafts 15a, 15b. The pivot axis Xi-X
It is configured to rotate in the horizontal direction with respect to 2.

Therefore, the pivot shaft 15a. The pivot axis connecting 15b XI-X
2 is arranged so that the horizontal center of the revolving frame 14 and the horizontal center of the completed green tire W coincide.

Further, the vertical center line Y1-Y2 of the turning frame 14 is arranged so that the vertical center of the completed green tire W coincides with the vertical center line Y1-Y2.

The frame-shaped rotating frame 14 is formed into a substantially octagonal shape.
Several locations around (in this example, 4 locations at 90° intervals)
, the vertical center line Yl- of the support frame 11 is
a gripping device 17a that moves forward and backward toward the intersection 16 between Y2 and the rotation axis Xl-X2 centered on the rotation axes 15a and 15b, and holds the outer peripheral surface of the completed green tire W;
17b, 17c, and 17d are attached at an angle of approximately 45°.

This gripping device 17a. 17b, 17c, 17d are the fourth
As shown in the figure, a base block 18 is fixed to the revolving frame 14, and an air cylinder 20 is assembled to the base block l8, and its output rod 21
A shoe plate 24 having an appropriate curved surface for gripping the completed green tire W without deforming it is attached to the shoe plate 24.

This output rod 21 is guided by a guide metal 19 installed on the base block l8, so that it can operate smoothly even when a load is applied to the shoe plate 24.

Further, on the other side of the base block 18, a guide device 2 for a guide rod 22 attached to a shoe plate 24 is provided.
3 is attached, while this guide device 23 is
It also includes a so-called brake mechanism that prevents movement of the guide rod 22. With these mechanisms, the shoe plate 2
4 can smoothly move forward and backward toward the center of the completed green tire W, that is, toward the intersection 16, and can be stopped and held at any position.

Therefore, the size D of the completed green tire W shown in FIG.
Even if the position changes, work such as adjusting the position of the shoe plate 24 is unnecessary, and it can be handled flexibly.

FIG. 6 is an enlarged side view of the take-out device 6 seen from the Z direction in FIG. It is being

A clevis fitting 28 is attached to the output shaft end of the swing cylinder 27, and is connected to the clevis fitting 28 via a pin 29 with an arm 30 fixed to the swing frame 14.

Next, the operation of taking out the completed green tire W according to the present invention will be explained.

When the conveyance device 4 moves to a position where it does not interfere with the take-out device 6 in FIG. 1, the take-out device 6 moves as shown in FIG.

Next, when the completed green tire W is completed and the stitcher device 8 is retracted to a position where it does not interfere with the take-out device 6, the movement shown in FIG. 2 (3) is performed. At this time, the center line Xi-X2 connecting the turning axes 15a and 15b is the main axis 2 of the completed green tire W.
a and 2b, that is, to a position that coincides with the center 0 in the thickness direction of the completed green tire W shown in FIG.

Thereafter, as shown in FIG. 5, each shoe plate 24 approaches and contacts the completed green tire W by the air cylinder 20.

At this time, if the output of the air cylinder 20, that is, the pressing force is too strong, the completed green tire W will be deformed and the quality will be adversely affected, so the pressure of the air cylinder 20 must be controlled to an appropriate pressing force. There is. As mentioned above, when the shoe plate 24 approaches and makes contact with the completed green tire W, the brake mechanism of the guide device 22 is actuated to prevent the shoe plate 24 from lowering due to the weight of the completed green tire W, or when the shoe plate 24 approaches the completed green tire W. Lock the 24 to prevent it from digging in. At this time, as shown in FIG. 5, shoe plate 24a. The shoe plate 24b is extended in the direction of the shoe plate 24b, and the shoe plate 24b is extended in the direction of the shoe plate 24a so that the completed green tire W is not deformed by receiving the weight of the completed green tire W over a wide area.

In the above state, the second-stage forming drums 3a, 3b are shrunk, and the completed green tire W can be taken out, and the completed green tire W is taken out from the second-stage forming drums 3a, 3b by moving - as shown in FIG. . Thereafter, the movement shown in FIG.

At this point, the second stage molding machine main body 1 starts molding the next tire. Until this point, unless the conveyance device 4 enters the second-stage forming drums 3a and 3b, there are no restrictions on the operation of the belt forming machine that forms the breaker and cap tread (not shown) into an endless shape. Naturally, if the take-out device 6 moves to a position where it does not interfere with the conveying device 4 by performing the movement shown in FIG. 2, it can enter the second-stage forming drums 3a and 3b.

The take-out device 6, which has returned to the standby position, is rotated in a predetermined direction by the cylinder 27, as shown in FIG. 7, so that a predetermined side surface of the completed green tire W becomes the top surface. At this time, the turning center XI-X2 passes through the center of gravity of the completed green tire W, so the turning is done in a balanced state. Therefore, even if the output of the cylinder 27 is extremely low, stable turning can be achieved.

Further, the turning radius R can be set to the minimum turning radius, and naturally the gripping devices 17a, 17b, 17c, 17d
However, since the turning radius R is arranged at approximately 45° to provide the minimum turning radius, when the completed green tire W is next released onto the conveyor 7 by retracting the shoe plate 24, The falling distance L can be minimized, and the completed green tire W can therefore be sent to the next process without being deformed (see FIG. 8).

Although it would be best to control the conveyor 7 by moving it up and down in order to prevent the completed green tire W from being deformed due to falling, this is not necessary for the above-mentioned reasons, making it possible to reduce equipment costs.

In the embodiment of this invention, the case of turning clockwise is shown in FIG. 7, but it is of course possible to turn counterclockwise by changing the shape of the arm 30, If a combination mechanism such as a motor and chain is used, the completed green tire W can be sent to the next process by changing the turning direction at the appropriate time. Also,
As is clear from the above series of operations and mechanisms, the completed green tire W is delivered onto the transport conveyor 7 so that its center position is constant, so centering is not required in the next process and efficient production is achieved. It can be done.

〔Effect of the invention〕

As mentioned above, by using a take-out device exclusively for completed green tires, this invention increases the degree of freedom in belt forming work and improves productivity. Since it is also possible to turn the tire in a predetermined direction and overturn it, it is possible to shorten the time required to take out the completed green tire, improving productivity, and further reducing labor by automatically taking out the tire. It has the effect of making it possible.

[Brief explanation of the drawing]

1 and 2 are a schematic front view and a plan view of a second stage molding machine for radial tires according to the present invention, FIG. 3 is an enlarged front view of a take-out device of the present invention, and FIG. I in figure 3
A side view as viewed from the V-IV arrow, FIG. 5 is a front explanatory view of the take-out device, FIG. 6 is a side view of the take-out device seen from the Z direction in FIG. 2, and FIGS. 7 and 8 show the operation of the take-out device. The explanatory diagram, FIG. 9, is a schematic front view of a conventional second stage molding machine for radial tires. DESCRIPTION OF SYMBOLS 1... Tire molding machine main body, 3a, 3b... Molding drum, 6... Take-out device, 7... Conveying means, 11...
・Support frame, 12 14...Swivel frame, 15 16...Intersection, 17a-17 XI-X2...Swivel center line, direction center line, W...Complete grid...Base frame, a ．． 15b... Swivel axis, d... Gripping device, Yl-Y2... Vertical tire.

Claims (1)

[Claims] 1. The completed green tire molded on the tire molding drum is taken out by a take-out device, and the completed green tire is conveyed while being held to a conveying means, where the completed green tire is oriented in a predetermined direction. This is a method for taking out a completed green tire by sending it out in a rotating state, and when the green tire forming is completed on the tire forming drum side, the taking out device moves to a position where it wraps around the completed green tire in a vertical state. The outer circumferential surface of the completed green tire is held by gripping devices that are installed at several points in the direction and can move back and forth, and in this state, the take-out device moves to a predetermined position on the conveying means and turns the completed green tire in a predetermined direction. After that, the completed green tire is opened in this state and sent onto a conveying means. 2. A reciprocally movable finished green tire take-out device is installed between the forming drum of the tire molding machine main body and the conveyance means, and this take-out device is installed horizontally on a movably suspended frame. A rotating frame configured to surround the completed green tire around a rotating axis that coincides with the center of the installed green tire is attached so as to be able to freely rotate in the horizontal direction. Removal of a completed green tire, characterized in that a gripping device is provided that moves forward and backward toward the intersection of a center line of the direction and a turning center line that passes through the center of the turning axis, and holds the outer peripheral surface of the completed green tire. Device.