JP2008200998A - Tire molding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tire molding apparatus which can position band-shaped members without bending of the side edges of the members and adhere the members to the tire molding drum rapidly and accurately without deformation of the members. <P>SOLUTION: The tire molding apparatus has a tire molding drum 1 and a carrying mechanism supplying a band-shaped member W. The carrying mechanism has the first conveyer carrying the member W in the first direction γ parallel to the rotation axis R of the tire molding drum and the second conveyer 5 which is arranged below and adjacent to the tire molding drum 1 and can carry the member W in the direction δ being perpendicular to the first direction γ and approaching the tire molding drum 1 at the same speed as the peripheral speed of the tire molding drum 1. The tire molding apparatus is erected in a side surface of the second conveyer 5 and has a guiding mechanism which becomes in contact with the member W having been carried in the first direction γ and positions the member W. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tire molding apparatus in which a belt-shaped tire constituent member cut out to a predetermined size is placed on a conveyor, conveyed, and attached to a peripheral surface of a tire molding drum that rotates at a predetermined speed.

  In general, in a pneumatic tire, a tire core such as a bead core, a carcass member, a belt member, and a tread member is bonded on a tire molding drum to form an unvulcanized tire, and the unvulcanized tire is placed in a vulcanization mold. Manufactured by vulcanization molding. At this time, rubber-based tire constituent members such as a carcass member and a belt member are conveyed by a conveyor or the like in the state of a strip-shaped member cut in advance to a predetermined size and supplied to a tire molding drum.

Conventionally, in order to affix a belt-shaped tire constituent member to a tire molding drum, an operator manually affixes a projection shadow projected on the tire molding drum, or, for example, as described in Patent Document 1, A belt-shaped member of a predetermined size cut out from the servicer is placed on the conveyor surface of the belt conveyor, and then the belt-shaped member on the conveyor surface is pressed against a tire molding drum using a pressure roller provided downstream of the conveyor. A belt-shaped member is wound around the drum by rotating the molding drum.
Japanese Patent No. 3020991

  By the way, when an operator sticks by hand like the former, it is difficult for even a skilled worker to stick to a predetermined position with high accuracy, and the accuracy varies depending on the worker, so that a certain quality is obtained. It is difficult to ensure, and the manufacturing cost increases because the time required for the pasting operation is long.

  In the latter case, when the belt-like member supplied from the servicer is placed on the transport surface of the conveyor, in order to increase the accuracy of sticking to a predetermined position on the drum, FIG. As shown, since positioning is performed by sandwiching the belt-like member W from both ends in the direction of the arrow A with, for example, a roller 106, if the belt-like member W is relatively thin or flexible and easily deformed, There is a problem that the both side ends are curved. Further, as shown in FIG. 5B, when the belt-like member W is attached to the tire molding drum 101, one end of the belt-like member W conveyed by the belt conveyor 105 is placed in the direction of arrow B by the pressure roller 110. Since the drum 101 is rotated from the state of being pressed onto the drum 101, there is a problem in that the belt-shaped member is likely to extend in the rotation direction of the drum 101.

  The present invention has been made to solve the above problems, and the object of the present invention is to perform positioning of the band-shaped member cut out from the servicer without curving the side edge of the band-shaped member, An object of the present invention is to provide a tire molding apparatus that can be quickly and accurately attached to a tire molding drum without deforming the belt-shaped member.

  In order to solve the above problems, a tire molding apparatus according to the present invention includes a tire molding drum that can rotate around a rotation axis, and a belt-shaped member that is a belt-shaped tire constituent member cut out to a predetermined size on the tire molding drum. A tire molding apparatus comprising: a conveying unit that supplies the belt-like member; the belt-like member is placed on the conveying unit and conveyed; and the belt-shaped member is attached to a peripheral surface of the tire molding drum. A first conveyor that conveys the belt-like member in a first direction that is parallel to the axis, and a direction that is disposed adjacent to the tire molding drum below the tire molding drum and that is orthogonal to the first direction Then, in a second direction that is a direction toward the tire molding drum, a second conveyor that can convey the belt-like member at the same speed as the circumferential surface of the tire molding drum, The tire molding device is provided on one side of the second conveyor, and guides the positioning of the belt member by contacting the belt member conveyed in the first direction by the first conveyor. It is characterized by comprising.

  Moreover, in the tire shaping | molding apparatus of this invention, it is preferable that said 1st conveyor is a roller conveyor and said 2nd conveyor is a belt conveyor. In this case, it is preferable that the first conveyor is disposed in a projection plane of the conveyance surface in a direction perpendicular to the conveyance surface of the second conveyor. Furthermore, it is preferable that the said tire shaping | molding apparatus is further provided with the raising / lowering means which raises / lowers said 2nd conveyor with respect to said 1st conveyor to an up-down direction. Furthermore, it is preferable that said 2nd conveyor has the opening for the said 1st conveyor to pass in in the conveyance surface. The above-mentioned “roller conveyor” includes not only a roller conveyor itself rotated by a predetermined driving source but also one rotated by an additional external force.

  Moreover, in the tire molding apparatus according to the present invention, it is preferable that the guide means is a plate-like member that comes into contact with one side end of the belt-like member.

  In such a tire molding apparatus, the band-shaped member cut out to a predetermined size is placed on the first conveyor, conveyed in a direction parallel to the rotation axis of the tire molding drum, and then brought into contact with the guide means. Since it is positioned, the belt-shaped member is not pressed from both side ends, and the side ends are not curved. Next, the positioned belt-shaped member is conveyed by the second conveyor toward the tire molding drum rotating around the rotation axis while maintaining the positioning state at the same speed as the peripheral surface of the tire molding drum. Thus, the belt-like member is not deformed in the rotating direction of the drum because it is transferred and pasted without tension on the peripheral surface of the drum.

  Therefore, according to the tire molding device of the present invention, positioning of the belt-shaped member can be performed without curving the side end of the belt-shaped member, and the tire molding drum can be quickly and accurately performed without deforming the belt-shaped member. Can be pasted.

  Below, typical embodiment of this invention is described based on drawing. Here, FIG. 1 is a side view schematically showing one embodiment of the tire molding apparatus of the present invention, FIGS. 2 and 3 are perspective views showing main parts of the tire molding apparatus of the embodiment, and FIG. It is a perspective view which shows the tire shaping | molding drum which comprises a part of tire shaping | molding apparatus of the said Example.

  As shown in FIG. 1, the tire molding apparatus of this embodiment is supplied from a tire molding drum 1 that can rotate around a rotation axis R that extends in a direction from the front to the back of the sheet of FIG. 1 and a servicer (not shown). A belt-shaped member in a direction parallel to the rotation axis R as a first conveyor constituting a conveying means for supplying a belt-shaped member W having a predetermined size determined according to the size of the product tire to the tire molding drum 1 The belt-shaped member W is conveyed in the direction perpendicular to the direction of the roller conveyor 3 and the rotation axis R, not shown here, and is directed to the tire molding drum 1. The position of the belt-shaped member W in contact with the belt-shaped conveyor 5 as a second conveyor that can be transported at the same speed, and the belt-shaped member W transported in the direction parallel to the rotation axis R by the roller conveyor 3 As the guide means for performing fit, wherein the plate-like member 6, not shown, comprises an air cylinder 7 as an elevating means for elevating up and down the belt conveyor 5 with respect to the roller conveyor 3.

  As shown in FIGS. 1 and 4, the tire molding drum 1 is supported by a frame (not shown) so as to be rotatable around a rotation axis R, and is driven to rotate in a direction indicated by an arrow α in FIGS. 1 and 4.

  The belt conveyor 5 is disposed below the tire molding drum 1 (downward in FIG. 1) and adjacent to the tire molding drum 1, and the belt conveyor 5 is rotatably mounted between a pair of left and right conveyor frames 5a. The driving roller 5b and the driven roller 5c, and a conveyor belt 5d spanned between these rollers 5b and 5c, are driven to rotate in the direction indicated by the arrow β.

  The rotational driving of the tire molding drum 1 and the rotational driving of the driving roller 5b can be performed based on the same driving source (for example, a motor). In this case, the tire molding drum 1 is decelerated to a predetermined rotational speed and the tire molding drum 1 is driven. And the driving roller 5b transmit the driving force from the one driving source to the tire molding drum 1 and the driving roller 5b via a gear configured to rotate in a predetermined rotation direction. The speed of the peripheral surface and the conveying speed of the belt conveyor 5 can be easily made the same, and the tire molding drum 1 can be rotated in the arrow α direction and the drive roller 5b can be rotated in the arrow β direction. Alternatively, the rotational driving of the tire molding drum 1 and the rotational driving of the driving roller 5b can be performed based on different driving sources. In this case, a motor and an inverter are provided for each, and the tire molding drum 1 is controlled by frequency control of the inverter. The speed of the peripheral surface and the conveying speed of the belt conveyor 5 can be made the same. The former is advantageous in terms of downsizing and cost reduction of the apparatus because of a single drive source, and the latter is advantageous when independent control is required for each rotation.

  As shown in FIG. 1, the air cylinder 7 is interposed between the base 9 fixed to the floor and the conveyor frame 5a of the belt conveyor 5 before and after the belt conveyor 5 (left and right in FIG. 1). The piston rod 7a of the air cylinder 7 can be moved back and forth by operating a solenoid valve (not shown) that is inserted and supplies compressed air to the air cylinder 7, so that the belt conveyor 5 can be moved vertically with respect to the base 9. Can be moved up and down. Note that a screw-type jack may be used as the lifting means instead of the air cylinder 7.

  As shown in FIG. 2, the roller conveyor 3 is composed of a plurality of rollers 3 a (for example, 16 rollers 3 a as shown in FIG. 2) capable of transporting the belt-like member W in the direction indicated by the arrow γ. Is disposed in the projection plane of the transport surface 5e in a direction perpendicular to the transport surface 5e. The roller conveyor 3 is held by a frame (not shown) fixedly supported on the base 9 so as to be independent of the up-and-down movement of the belt conveyor 5. Each roller 3a constituting the roller conveyor 3 is freely rotated by an additional external force. When the belt-like member W is supplied from the servicer in the direction of the arrow γ, the belt-like member W is caused by its own inertia. It is conveyed in the direction of arrow γ.

  The conveyor surface of the belt conveyor 5 is related to the roller conveyor 3 arranged in the projection plane of the conveyor surface 5e in the direction perpendicular to the conveyor belt 5 and the conveyor surface 5e of the conveyor belt 5 described above. In 5e, openings 5f through which the rollers 3a of the roller conveyor 3 pass are formed at positions corresponding to the rollers 3a to be larger than the outline of the rollers 3a. In this way, it is possible to move the belt conveyor 5 up and down with respect to the roller conveyor 3 while passing the roller conveyor 3 through the belt conveyor 5.

  Further, as shown in FIG. 2, the plate-like member 6 as the guide means is erected vertically on the left side surface of the belt conveyor 5 (left side surface in FIG. 2) perpendicular to the belt conveyor 5.

  Next, the operation of the tire forming apparatus of the above embodiment will be described.

  First, as shown in FIG. 2, when a belt-like member W having a predetermined size is supplied in a direction indicated by an arrow γ from a servicer (not shown) installed on the right side of the belt conveyor 5, due to the momentum supplied and rotation of the roller 3a. The belt-like member W is conveyed in the arrow γ direction. The belt-like member W is positioned at a predetermined position when one side end of the belt-like member W comes into contact with the plate-like member 6 standing upright on the left side (left side in FIG. 2) of the belt conveyor 5.

  Subsequently, as shown in FIG. 3, the piston rod 7 a of the air cylinder 7 is extended, and the belt conveyor 5 is moved with respect to the roller conveyor 3 while passing the rollers 3 a of the roller conveyor 3 through the opening 5 f of the conveying surface 5 e of the belt conveyor 5. The belt-like member W is placed on the conveying surface 5e of the belt conveyor 5 while maintaining its positioning state.

  As shown in FIGS. 1 and 4, the belt-like member W placed on the conveying surface 5 e of the belt conveyor 5 is rotated by the belt conveyor 5 with the speed of the peripheral surface of the tire molding drum 1 that rotates in the arrow α direction. It is conveyed in the direction of arrow δ at the same speed, and is transferred and pasted to the tire molding drum 1 without tension.

  In the tire molding apparatus of this embodiment, the belt-like member W cut out to a predetermined size is placed on the roller conveyor 3 and is parallel to the rotation axis of the tire molding drum 1 (the direction of the arrow γ in FIG. 2). ), The belt-like member W is not pressed from both side ends, and the side ends thereof are not curved. Next, the positioned belt-like member W is moved by the belt conveyor 5 toward the tire molding drum 1 that rotates around the rotation axis R while maintaining the positioning state, and has the same speed as the peripheral surface of the tire molding drum 1. The belt-like member W is not deformed in the rotation direction of the drum because it is transported at a speed and transferred and pasted onto the peripheral surface of the drum without tension.

  Therefore, according to the tire molding apparatus of this embodiment, positioning of the belt-shaped member W can be performed without curving the side end of the belt-shaped member W, and the tire molding drum 1 without deforming the belt-shaped member W. Can be pasted quickly and accurately.

  Thus, according to the tire molding apparatus of the present invention, the strip-shaped member cut out to a predetermined size is placed on the first conveyor, conveyed in a direction parallel to the rotation axis of the tire molding drum, and then applied to the guide means. Since it is positioned in contact with each other, the belt-like member is not pressed from both side ends, and the side ends are not curved. Then, the positioned belt-shaped member is conveyed by the second conveyor toward the tire molding drum rotating around the rotation axis while maintaining the positioning state at the same speed as the peripheral surface of the tire molding drum. The belt-like member is not deformed in the rotation direction of the drum because the belt-like member is transferred and pasted without tension on the peripheral surface of the drum. Therefore, positioning of the belt-like member can be performed without curving the side edge of the belt-like member. It can be performed and can be quickly and accurately applied to the tire molding drum without deforming the belt-like member.

FIG. 1 is a side view schematically showing one embodiment of a tire molding apparatus according to the present invention. It is a perspective view which shows the principal part of the tire shaping | molding apparatus of the said Example. It is a perspective view which shows the principal part of the tire shaping | molding apparatus of the said Example. It is a perspective view which shows the tire shaping | molding drum which comprises a part of tire shaping | molding apparatus of the said Example. (A) is schematic which shows the positioning process of the strip | belt-shaped member by the apparatus according to a prior art, (b) is schematic which shows the sticking process to the tire molding drum of the strip | belt-shaped member by the apparatus according to a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tire molding drum 3 Roller conveyor 3a Roller 5 Belt conveyor 5a Conveyor frame 5b Drive roller 5c Driven roller 5d Conveyor belt 5e Conveying surface 5f Opening 6 Plate-shaped member 7 Cylinder 7a Piston rod 9 Base

Claims (6)

A tire molding drum rotatable around a rotation axis; and a conveying means for supplying the tire molding drum with a belt-shaped member which is a belt-shaped tire component member cut out to a predetermined size. In the tire molding apparatus that is placed on the means and transported and pasted on the peripheral surface of the tire molding drum,
The conveying means includes a first conveyor that conveys the belt-like member in a first direction that is parallel to a rotation axis of the tire molding drum, and adjacent to the tire molding drum below the tire molding drum. The belt-shaped member is transported at a speed equal to the speed of the peripheral surface of the tire molding drum in a second direction that is disposed and orthogonal to the first direction and toward the tire molding drum. A second conveyor possible,
The tire molding device includes a guide unit that stands on one side of the second conveyor and positions the belt-shaped member by contacting the belt-shaped member conveyed in the first direction by the first conveyor. A tire molding apparatus.   The tire molding apparatus according to claim 1, wherein the first conveyor is a roller conveyor, and the second conveyor is a belt conveyor.   The tire molding device according to claim 2, wherein the first conveyor is disposed in a projection plane of the conveyance surface in a direction perpendicular to the conveyance surface of the second conveyor.   The tire molding device according to claim 3, further comprising lifting means for moving the second conveyor up and down with respect to the first conveyor.   The tire molding apparatus according to claim 4, wherein the second conveyor has an opening in the transport surface for allowing the first conveyor to pass therethrough.   The tire molding device according to any one of claims 1 to 5, wherein the guide means is a plate-like member that comes into contact with one side end of the belt-like member.

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