JPH09216297A - Apparatus for delivering and cutting tire constitutional member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus preventing the bending or tearing-up deformation of the leading end of a strip like tire constitutional member, accurately winding the tire constitutional member around a molding drum and capable of enhancing tire quality and productivity in work winding the tire constitutional member around the molding drum to cut the same. SOLUTION: An automatic cutting means 3, a sending-out guide 2, a clamp means 4 and a moving means 5 are provided and, when a tire constitutional member T is wound around a molding drum 1, the sending-out guide and the clamp means are positioned in front of the automatic cutting means with respect to the molding drum to perform winding work and, when the tire constitutional member is cut into a predetermined length, the sending-out guide and the clamp means are positioned behind the automatic cutting means with respect to the molding drum to perform cutting work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when molding a raw tire with a tire molding machine, sends a tire constituent member onto a molding drum in the work of winding and cutting a belt-shaped tire constituent member around the tire molding drum. , A device for cutting to a predetermined length.

[0002]

2. Description of the Related Art As such a conventional technique, those shown in FIGS. 5, 6 and 7 are generally known. That is, when the tire constituent member T is wound around the molding drum 1, as shown in FIG. 5, when the core of the tire constituent member T is guided by the delivery guide G and wound around the molding drum 1, when the predetermined winding length is reached. Then, as shown in FIG. 6, the tire constituent member T is cut by the automatic cutting means 3, and the remaining cut member is wound around the molding drum 1. Next, as shown in FIG. 7, a delivery roller R newly feeds a tire constituent member T through a feeding guide G, and the tire constituent member T is fed by a predetermined length until it comes out from the tip of the guide. The first state shown in 1) is reached, and the next winding is performed.

[0003]

However, in the above conventional technique, as shown in FIG. 7, when the tire constituent member T is sent out by the sending roller R and is passed through the sending guide G, the tip of the tire constituent member T is It sometimes bends or is deformed so that it may turn over, and in the worst case, it may not work well and may get stuck. Therefore, the winding accuracy around the molding drum 1 becomes poor,
There were drawbacks such as deterioration of tire quality and productivity hindered by repair work.

The present invention has been made in view of the above circumstances, and eliminates the occurrence of phenomena such as the tip of a tire constituent member being bent, deformed to be turned up, or clogged without passing through well. An object of the present invention is to provide a device capable of accurately winding around a molding drum to improve tire quality and productivity.

[0005]

Therefore, according to the invention described in claim 1, referring to FIGS. 1, 2 and 3, (1) automatic cutting means 3 for cutting a tire constituent member T; and (2) When the tire constituent member T is sent onto the tire forming drum 1, the sending guide 2 for centering the tire constituent member T
(3) Clamping means 4 mounted on the delivery guide for fixing the tire constituent member T disposed on the delivery guide 2 to the delivery guide, and (4) the delivery guide 2. The tire constituent member T is molded by including a moving unit 5 that can move the position with respect to the clamp unit 4 back and forth of the automatic cutting unit 3 along a direction orthogonal to the axis C of the molding drum 1. When winding on the drum 1, the feeding guide 2 and the clamping means 4 are positioned in front of the automatic cutting means 3 with respect to the molding drum 1 to perform a winding work, and the tire component T is cut into a predetermined length. At times, the feeding guide 2 and the clamping means 4 are positioned behind the automatic cutting means 3 with respect to the molding drum 1 to perform cutting work. It was feeding cutting device formed member.

According to the first aspect of the present invention, as shown in FIG. 1, when the tire component T is wound around the molding drum 1, the delivery guide 2 and the clamping means 4 of the molding drum 1 are the automatic cutting means 3. It is located in the front and is used for winding work. Further, as shown in FIG. 2, when the tire component T is cut to a predetermined length, the moving means 5 moves the feed-out guide 2 and the clamping means 4 to the rear of the automatic cutting means 3 with respect to the molding drum 1, and clamps them. After the means 4 is operated to fix the tire constituent member T on the delivery guide 2, the cutting operation is performed at that position. Next, as shown in FIG. 3, while the tire constituent member T is fixed on the delivery guide 2 by operating the clamping means 4, the delivery means 2 and the clamping means 4 are again moved to the molding drum 1 by the moving means 5.
Moves to the front of the automatic cutting means 3 and prepares for the next winding. Therefore, the winding and cutting work can be performed with the tire constituent member T always passed through the delivery guide 2. For this reason, it is not necessary to pass the tire constituent member through the delivery guide, so that the drawbacks of the prior art can be eliminated.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIGS. First, the configuration of the apparatus according to the present invention will be described. In these drawings, reference symbol T is a belt-shaped tire constituent member. Reference numeral 1 is a tire forming drum attached to a tire forming machine and around which tire constituent members are wound to form a raw tire. Reference numeral C is an axis of the molding drum 1, and the axis C extends in a direction perpendicular to the paper surface. Molding drum 1
Rotates around the axis C in the direction of arrow A, and winds the tire component T in the direction of arrow B while winding the tire component T around itself.

Reference numeral 2 is a delivery guide for centering the tire constituent members. The delivery guide 2 is formed by a frame 6. As shown in FIG. 1, a pair of rolls 2a is attached to the front end portion of the frame 6 (downstream side in the traveling direction of the tire constituent member T) so as to be rotatable in the horizontal direction and sandwich the tire constituent member T vertically. ing. A similar pair of rolls 2 a is attached to the rear end of the frame 6. Two pairs of rolls 2b are mounted on the frame 6 inside the pair of rolls 2a, 2a so as to be rotatable in the vertical direction and sandwich the side surface of the tire constituent member T at two locations. The pair of rolls 2a and 2b are in the shape of a cross beam and guide the tire constituent member T from the upper and lower sides and both side surfaces to center the tire constituent member T. Further, the frame 6 between the pair of rolls 2b, 2b
Clamping means 4 is attached on the top. The clamp means 4 can fix the tire constituent member T on the tire delivery guide 2 by sandwiching the tire constituent member T with the frame 6 by operating the clamp cylinder 4a.

Reference numeral 3 is an automatic cutting means for cutting the tire constituent member T, which is a conventionally known device. Reference numeral 5 is a moving unit that allows the positions of the delivery guide 2 and the clamp unit 4 to be moved forward and backward of the automatic cutting unit 3. The moving means 5 is composed of an air cylinder 5a, and a tip of a rod 5b of the air cylinder 5a is fixed to a frame 6. The automatic cutting means 3 and the moving means 5 are fixed to a common frame (not shown). The frame 6 to which the feed-out guide 2 and the clamp means 4 are attached is slidably attached to this common frame along a direction orthogonal to the axis C of the molding drum 1. Therefore, by operating the air cylinder of the moving means 5, the position of the delivery guide 2 and the clamping means 4 is set to the axis C of the molding drum 1.
The automatic cutting means 3 can be moved forward and backward along a direction orthogonal to the.

The configuration of the apparatus as one embodiment of the present invention has been described above. In the present embodiment, the tire constituent member T is wound from the upper side of the molding drum 1, but as another embodiment, it may be wound from the lower side of the molding drum 1 as shown in FIG.

Next, the operation of feeding and cutting the tire constituent member T onto the molding drum 1 by this apparatus will be described. FIG. 1 shows an initial state in which the tire constituent member T is to be wound around the molding drum 1. In this state, the delivery guide 2 and the clamp means 4 are located in front of the automatic cutting means 3 with respect to the molding drum 1.
The clamp means 4 is not operated, and the tire constituent member T can pass through the delivery guide 2. From this state, the molding drum 1 rotates around the axis C in the direction of arrow A, and pulls out the tire constituent member T in the direction of arrow B to wind the tire constituent member T around itself.

Next, as shown in FIG. 2, when the work of winding the tire constituent member T around the molding drum 1 for a predetermined length is completed, the moving means 5 is actuated and the delivery guide 2 and the clamping means for the molding drum 1 are operated. 4 is moved to the rear of the automatic cutting means 3. At this position, the clamp means 4 is operated to fix the tire constituent member T on the delivery guide 2. The tire constituent member T is in a state of being pulled between the molding drum 1 and the delivery guide 2. At this point, the automatic cutting means 3 is activated to cut the tire component T.
During this time, the clamping means 4 continues to operate, and the tire constituent member T remains fixed on the delivery guide 2 and does not move. When the cutting operation is completed, the remaining cut tire constituent members are wound around the molding drum 1, and the winding operation of the tire constituent member T around the molding drum 1 is completed.

Next, as shown in FIG. 3, the clamping means 4
Is operated to move the moving means 5 again with the tire constituent member T fixed on the delivery guide 2, and the molding drum 1
On the other hand, the delivery guide 2 and the clamp means 4 move in front of the automatic cutting means 3. Here, the clamp means 4 is released, returns to the initial state shown in FIG. 1, and prepares for the next winding. Therefore, the winding and cutting work can be performed with the tire constituent member T always passed through the delivery guide 2. For this reason, it is not necessary to pass the tire constituent member through the delivery guide, so that the drawbacks of the prior art can be eliminated.

[0014]

According to the present invention, since the work of passing the tire constituent member through the sending guide is not necessary, the tire constituent member T is sent out by the sending roller R as shown in FIG. When the tire was passed through the inside, the tip of the tire constituent member T was bent or deformed so as to be turned up, and in the worst case, there was no phenomenon such as jamming without passing through. Therefore, since the winding accuracy around the molding drum 1 is accurate, the tire quality is improved, and there is no work for correction,
The productivity of tire building work has improved remarkably.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of the present invention,

FIG. 2 is an explanatory view showing a state in which a tire constituent member is cut,

FIG. 3 is an explanatory view showing a state in which the delivery guide and the clamping means are moved to the front of the automatic cutting means again after cutting the tire constituent member.

FIG. 4 is an explanatory view showing a state in which a tire constituent member is wound from the lower side of a tire molding drum;

FIG. 5 is an explanatory diagram showing a configuration of a conventional technique,

FIG. 6 is an explanatory view showing a state in which a tire constituent member is cut by a conventional technique,

FIG. 7 is an explanatory view showing a state in which a tire constituent member is passed through a delivery guide according to a conventional technique.

[Explanation of symbols]

 1: Molding drum 2: Delivery guides 2a, 2b: A pair of rolls 3: Automatic cutting means 4: Clamping means 4a: Clamp cylinder 5: Moving means 5a: Air cylinder 5b: Cylinder rod 6: Frame A, B: Arrow C : Shaft core G: Conventional delivery guide R: Delivery roller T: Tire component

Claims (1)

[Claims] Claims: (1) automatic cutting means for cutting a tire constituent member; (2) a feeding guide for centering the tire constituent member when the tire constituent member is sent onto a molding drum of the tire; and (3). In order to fix the tire constituent member arranged on the delivery guide to the delivery guide, the clamping means mounted on the delivery guide and (4) the positions of the delivery guide and the clamping means are molded. Along with a direction orthogonal to the axis of the drum, the moving means is provided to be movable back and forth of the automatic cutting means, and when the tire constituent member is wound around the molding drum, the delivery guide and the When the clamping means is positioned in front of the automatic cutting means to perform the winding operation and the tire constituent member is cut into a predetermined length, Feeding cutting device tire components the feed guide and the clamping means with respect to the mold drum and performs the cutting operation is positioned at the rear of the automatic cutting means.