JPH0222040A - Apparatus for automatic adhesion in tire molding machine - Google Patents

Abstract

PURPOSE:To perform adhesion with high accuracy by means of a simple mechanism and to perform automatic adhesion with high reliability by controlling synchronously peripheral speeds of a molding drum and a knife edge conveyer and adhering automatically a tire molding material on the surface of the molding drum. CONSTITUTION:A molding drum 2 is rotatively driven by synchronizing with a knife edge conveyer 1 and delivery of a tire molding material with a smooth work and being correct can be thereby performed. A conveyer of a right angle- shape using a pulley or a round rod 6 having an extremely small diameter is used instead of using a conventional pulley with a large diameter on the side of the molding drum 2 of the knife edge conveyer 1. The molding drum 2 and the apex of the knife edge conveyer 1 can be thereby brought extremely close each other and a delivery of the right tire molding material W can be performed. Therefore, any complicated mechanism is not necessary at all and it is possible to realize automatic adhesion of the right tire molding material W by an extremely simple structure.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automatic pasting device in a tire molding machine, and more specifically to a knife as a conveyor for supplying tire molding material to a molding drum and automatically pasting it. This invention relates to an automatic pasting device in a tire molding machine that uses a jet conveyor.

[Conventional technology]

Conventionally, in tire molding machines, tire molding materials are often pasted by hand, especially when the tire molding material itself is not rigid.Also, even when automatic pasting is performed as described later, the tire molding material is pasted on the molding drum. complex pick-and-place equipment was required to apply it.

[Problem that the invention seeks to solve]

When the tip of the conventional tire molding material W is bias cut at a certain angle α, the tire molding material W is transferred to a molding drum 2 using a general belt conveyor device 1 as shown in FIG. When attempting to automatically paste the top of the belt, the diameter of the pulley 3 located on the forming drum 2 side is large, so the tip of the belt 4 of the belt conveyor device 1 cannot be brought close to the circumferential surface of the forming drum 2. Figure 9 (a
As shown in FIG. 9(b), it is fine if the tip Wa of the tire molding material W slightly protrudes from the heald conveyor device 1 as shown in FIG. 9(a). 9 toward the forming drum 2 side from 1 (bl
As shown in the figure, when the tip Wa of the tire molding material W hangs down, it bends inward as the tip Wa hangs down, and the tire molding material W is accurately pasted at a predetermined position on the molding drum 2. The problem was that I couldn't do it.

[Purpose of the invention]

This invention was devised by paying attention to such conventional problems, and by using a knife con-hair with an acute-angled shape on the forming drum side as a servicer rack for tire forming material, The tip of the conveyor can be brought close to the surface of the drum, and as a result, the tire molding material can be applied accurately to the predetermined position on the molding drum without the need for conventional complicated equipment, and the mechanism is simple. Therefore, it is an object of the present invention to provide an automatic pasting device for a tire molding machine that can perform automatic pasting with high reliability.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a device for automatically pasting tire molding material sent out from a material feeding device to a molding drum by using a conveyor equipped with a material cutting device and a material pressure bonding device, As the conveyor, a knife conveyor having an acute-angled shape on the forming drum side is used, and the peripheral speed of the forming drum and the circumferential speed of the knife conveyor are synchronously controlled to transfer the tire molding material to the forming drum. The gist of this is to automatically attach the sticker to the surface of the screen.

[Action of the invention]

This invention uses the knife conveyor constructed as described above and having an acute-angled shape on the forming drum side as a servicer rack for tire molding material, and the circumferential speed of the forming drum and the circumferential speed of the knife conveyor. By synchronously controlling these, tire molding materials with no rigidity can be applied automatically and with high precision.

[Embodiments of the invention]

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

In the following description, the same components as those of the above-mentioned conventional example will be described with the same reference numerals.

FIG. 1 shows a schematic configuration diagram of an automatic pasting device for tire molding material W according to the present invention, in which 1 is a knife that can move forward and backward, and has a forming drum 2 side that can be expanded and contracted once and formed into an acute-angled shape. There is a conveyor, which corresponds to a tire molding machine servicer rack. This knife conveyor 1 uses an extremely small-diameter pulley or round bar 6 (for example, Φ6fl to Φ1211) on the forming drum 2 side, and uses large-diameter pulleys 7a, 7b, etc. to form a belt. The number 4 is made up by turning it.

The knife conveyor 1 also includes a pressure roller 8 that presses the tire molding material W onto the surface of the molding drum 2.
(Material pressure bonding device W) is provided, and this pressure roller 8 swings vertically by appropriate means to press against or separate from the forming drum 2.

Further, 9 indicates a device for dispensing tire molding material W, and the tire molding material W dispensed by this dispensing device 9 is as follows:
It is centered at the correct position by a centering device (not shown) and cut at a predetermined position by an automatic cutting device 10.

FIG. 2 is a plan view seen from arrow X in FIG. 1, in which the tip Wa of the tire molding material W is bias cut at a certain angle α.

Next, the automatic pasting operation by the tire molding machine servicer rack embodying the present invention will be explained.

From the standby state shown in FIG. 1, the tire molding material W is fed out in the tangential direction toward the molding drum 2.

At this time, the molding drum 2 can be driven to rotate in synchronization with the knife conveyor 1 so that the tire molding material W can be fed out correctly with smoother operation, but it may be in a fixed state.

In this invention, as described above, by using an extremely small diameter pulley or an acute-angled conhairor using a round bar 6 on the forming drum 2 side instead of the conventional large diameter boob, The forming tram 2 and the tip of the knife conveyor 1 can be brought very close to each other, and the tire forming material W can be fed out correctly.

Figure 10 and Table 1 below show the forming drum 2 and pulley 6a.
It shows how far the tire molding material W has to travel from the knife conveyor 1 depending on the size of the drum radius R0-Φ300m, pulley radius R2-50Tsuru's L+ = 245 +u For, drum radius R5-Φ300 tm, pulley radius Rz
= 3 yux indicates that L = 60 m1, which is an extremely short distance.

(The following is a blank space) Table 1 Next, as shown in FIG.
The pressure roller 8 is operated to press the molding drum 2.

At this time, the forming drum 2 has an appropriate adsorption mechanism (for example, a magnet, a vacuum, etc.), so that the tip Wa of the tire forming material W is separated from the forming drum 2 even if the forming drum 2 rotates. It is configured so that nothing happens.

Next, FIG. 4 shows a situation in which the forming drum 2 and the knife connector hair 1 operate in synchronization, and the tire forming material W is pasted without applying unnecessary force such as tensile force to the tire forming material W. It shows. FIG. 5 shows that the molding drum 2 rotates by a predetermined amount and then stops, and the automatic cutting device 10 operates to cut the tire molding material W at a predetermined length position on a bias. Paste the remaining parts as shown and
Complete the automatic pasting as shown in the figure.

In FIG. 6, the knife conveyor 1 is not driven and the tire molding material W is pasted on it, but this is a particular problem because it is a small portion of the rear end of the tire molding material W. Never.

In this invention, as described above, on the forming drum 2 side, instead of the conventional large diameter pulley, an extremely small diameter pulley or an acute-angled conveyor using a round bar 6 (Φ6 ml to Φ121 mm) is used. As a result, the forming drum 2 and the tip of the knife conveyor 1 can be brought close to each other, and as a result, the tip Wa of the tire forming material W is suction-grasped and applied onto the forming drum 2, which requires a complicated mechanism, etc. It is possible to realize automatic application of the correct tire molding material W with an extremely simple structure without the need for any.

In addition, in the above embodiment, the tip Wa of the tire molding material W
is cut at a bias angle of α, but is not limited to this, and may be cut at an angle of α90.

〔Effect of the invention〕

The present invention is an apparatus for automatically applying tire forming material fed from a material feeding device as described above to a forming drum by a conveyor equipped with a material cutting device and a material pressure bonding device. The tire forming material is applied to the surface of the forming drum by synchronizing the peripheral speed of the forming drum and the peripheral speed of the knife conveyor using a knife conveyor whose forming drum side has an acute-angled shape. Since it is pasted automatically,
It has the following excellent effects.

(a) Automatic pasting can be performed at low cost with a simple mechanism without the need for conventional complicated equipment.

(b) Since the forming drum and the conveyor are controlled synchronously, even if the material does not have rigidity, it can be pasted with high precision without deforming it.

(C) It is possible to accurately apply the tire molding material to a predetermined position on the molding drum, to perform automatic pasting with high rotational speed, and to significantly improve work efficiency.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of an automatic tire forming material pasting device in a tire forming machine embodying the present invention, Fig. 2 is a plan view taken in the direction of the X arrow in Fig. 1, and Figs. 3 to 7 are , an explanatory diagram showing the operation of pasting tire molding material, FIG. 8 is an explanatory diagram of a conventional automatic tire molding material pasting device, and FIGS.
1 is an explanatory side view as viewed from the Y arrow in FIG. 8, and FIG. 10 is an explanatory diagram showing the relationship between the forming drum and the tip pulley of the knife conveyor. DESCRIPTION OF SYMBOLS 1... Knife conveyor, 2... Forming drum, 8... Pressure roller (material pressure bonding device W), 9... Material feeding device, 10... Material cutting device, W... Tire Molding material.

Claims (1)

[Claims] A device for automatically pasting tire molding material sent out from a material feeding device to a forming drum by supplying it to a forming drum by a conveyor equipped with a material cutting device and a material pressing device, wherein the conveyor is configured such that the forming drum side is at an acute angle. The tire molding material is automatically applied to the surface of the forming drum by using a knife-edge conveyor configured in the shape and synchronously controlling the circumferential speed of the forming drum and the circumferential speed of the knife-edge conveyor. Automatic pasting device in tire molding machine.