JP2004017498A - Manufacturing method for strip piece joined object and manufacturing apparatus for strip piece joined object used therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily form various strip piece joined objects made different in cutting angle, to suppress the installation space of apparatuses and an apparatus cost low and to enhance work efficiency at change of a step. <P>SOLUTION: A strip piece S1, which is formed by cutting a long strip S into a constant dimension at a cutting angle θ, is supplied to the peripheral surface of a drum 5. At every completion of the winding of one strip piece S1, the drum 5 is axially moved and the strip piece S1 is subsequently wound while the longitudinal end edge E of the previously wound strip piece S1 is aligned with the next wound longitudinal end edge E to form a strip piece joined object SS with a predetermined width wherein a plurality of the strip pieces S1 are arranged side by side. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides a method of manufacturing a strip piece joined body in which a strip piece cut to a fixed length from a long strip is sequentially joined between uncut side edges to form a strip piece joined body of a predetermined length. Further, the present invention relates to an apparatus for manufacturing a strip piece joined body used therefor.
[0002]
[Prior art]
For example, Japanese Patent Application Laid-Open No. 2001-121622 proposes an apparatus for manufacturing a strip piece joined body used for a belt ply of a tire. This is shown schematically in FIG.
A transport device b for transporting the strip a in the longitudinal direction;
A transfer device c for transferring the front end side of the strip a to be conveyed to the sticking conveyor d at a fixed length;
A cutting device e that cuts the transfer portion along the attaching conveyor d to form the strip pieces a1;
The pasting conveyor d for sequentially joining the transferred and cut strip pieces a1 and the preceding strip pieces a1 between uncut side edges to form a strip piece assembly aa having a predetermined width; and A take-up conveyor g that receives the strip piece joined body aa and carries it out to the forming drum f in the next process;
It is composed with. An upstream device portion including the transfer device b, the transfer device c, and the cutting device e is arranged in a straight line, and a downstream device portion including the sticking conveyor d, the take-up conveyor g, and the forming drum f. Are arranged in a straight line and intersect with the upstream device portion at an intersection angle α that matches the cutting angle θ.
[0003]
[Problems to be solved by the invention]
However, in the belt ply, the angle θ is set to various values according to tire specifications, so that the upstream device portion is fixedly arranged, and the entire downstream device portion is configured to be capable of turning movement. Each time the specifications of the tire to be manufactured are changed, the intersection angle α needs to be changed in accordance with the cutting angle θ.
[0004]
Therefore, the installation space of the device and the cost of the device are increased, and a lot of labor and time are required for changing the intersection angle α for each change in the tire specification.
[0005]
Therefore, the present invention is based on joining the side edges of the strip pieces on the peripheral surface of the drum in place of the sticking conveyor, and it is possible to manufacture various strip piece joined bodies having different cutting angles θ while using the apparatus. It is an object of the present invention to provide a method of manufacturing a strip-joined body that can reduce the installation space and apparatus cost of the device, and that does not require a change in arrangement according to a change in the cutting angle θ, and a manufacturing apparatus of the strip-joined body used therein. I have.
[0006]
[Means for Solving the Problems]
To achieve the above object, claim 1 of the present application is an invention of a manufacturing method of a strip piece joined body, which conveys a long strip whose both side edges are parallel to each other in a longitudinal direction, and transfers the strip to the length. Cutting angle θ to the direction, and cut into fixed lengths at a fixed length,
Supplying the cut strip pieces to the peripheral surface of the drum by a supply conveyor in a direction in which the length direction of the strip pieces is perpendicular to the center axis of the drum,
Further, at each end of winding of one strip, the drum is sequentially moved in the axial direction by the width of the strip, and then the longitudinal edge of the previously wound strip is wound next. A plurality of strip pieces are arranged side by side while being wound while being aligned, thereby forming a strip piece joined body having a predetermined width in which a plurality of strip pieces are arranged in parallel.
[0007]
Further, claim 2 is an invention of a manufacturing apparatus of a strip piece joined body, wherein a conveying device for conveying a long strip whose both side edges are parallel in a length direction,
A cutting device for forming a strip piece having both ends in the length direction cut by cutting the strip at a cutting angle θ with respect to the length direction and at a fixed length.
A supply conveyor that transports the strip pieces in the longitudinal direction and supplies the strip pieces to the peripheral surface of the drum,
And the above-mentioned drum which winds the supplied strip piece in the circumferential direction,
The drum is arranged so that its central axis is perpendicular to the length direction of the strip piece, and after each winding of one strip piece, the drum is sequentially moved in the axial direction by the width of the strip piece, and then the drum is moved forward. A strip having a predetermined width in which a plurality of strips are arranged in parallel by winding the strip in a longitudinal direction so as to align the longitudinal edges of the strip with the longitudinal edges to be wound next It is characterized by forming a body.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to illustrated examples. FIG. 1 is a plan view showing an apparatus for manufacturing a strip piece joined body of the present invention, and FIG. 2 is a side view thereof.
[0009]
Here, as shown in FIG. 7, the strip strip joined body manufacturing apparatus 1 (hereinafter, referred to as manufacturing apparatus 1) cuts a long strip S whose both side edges Se are parallel to each other at a cutting angle θ with respect to the length direction. After the strip pieces S1 are formed by being cut into fixed lengths K to form a strip piece S1, a desired number of the strip pieces S1 are sequentially joined between the uncut side edges Se, thereby forming a strip having a predetermined width L. The one-sided assembly SS is formed. In this example, the strip piece assembly SS is a member for forming a belt ply of a tire, and a plurality of tire cords are buried in the strip S in the lengthwise direction in rubber. The cutting angle θ is variously set according to the specifications of the tire.
[0010]
Next, as shown in FIGS. 1 and 2, the manufacturing apparatus 1 includes a transport device 2 that transports a long strip S in a length direction, and a cutting device 3 that cuts the strip S into strip pieces S1. And a supply conveyor 4 for conveying the strip piece S1 in the longitudinal direction and supplying it to the peripheral surface of the drum 5, and the drum 5 for winding the supplied strip piece S1 in the circumferential direction by rotation. .
[0011]
In this example, a case where a strip forming device 8 is arranged via a festoon 7 on the upstream side of the transport device 2 is illustrated, and the strip forming device 8 supplies and aligns a plurality of tire cords. A cord stand 8A and an extruder 8B for rubberizing a supplied steel cord to form a long strip S having both side edges parallel to each other.
[0012]
Note that, instead of the strip forming device 8, a strip supply device that rewinds the strip S from a previously formed roll of the strip S can be used.
[0013]
The transfer device 2 and the supply conveyor 4 are belt conveyors, are arranged in a straight line so that they can be connected, and the cutting device 3 is provided in a gap between the transfer device 2 and the supply conveyor 4. Will be arranged.
[0014]
The cutting device 3 includes a cutter 11 for cutting the strip S at the gap at a cutting angle θ with respect to its length direction. In this example, as schematically shown in FIG. 3, the cutting device 3 pivotally supports the support shaft 13 vertically to the upper frame member 12 </ b> U of the portal frame 12 that straddles the transport device 2. The support shaft 13 is connected to a motor M1 fixed to the upper frame member 12U via a transmission means 14 using, for example, a gear, and the lower end of the support shaft 13 travels through the cutter 11 via a guide means 15. Freely attached. The guide means 15 includes a guide rail 16 having a guide groove 16A, and a traveling piece 17 that can travel horizontally along the guide groove 16A. The lower end of the cutter holder 18 extending from the traveling piece 17 has, for example, a disc. A cutter 11 is rotatably mounted along the traveling direction. The traveling piece 17 can travel by a motor M2 fixed to the guide rail 16.
[0015]
Therefore, the cutting device 3 can freely adjust the direction of the guide rail 16, that is, the cutting angle θ of the cutter 11 around the support shaft 13 by the operation of the motor M <b> 1. The cutter 11 may be a guillotine-shaped cutting blade that descends and pushes the strip S. In such a case, a cylinder or the like may be suitably used as a lifting / lowering tool that moves the cutter 11 up and down. The transfer device 2 is provided with adjusting means (not shown) for adjusting the cutting length K into the strip S by controlling the feed amount from the transfer device 2 to the supply conveyor 4.
[0016]
Further, the supply conveyor 4 further conveys the cut strip S1 in the longitudinal direction, and supplies the strip S1 to the peripheral surface of the drum 5 from its tip 4e (downstream end) and affixes it. For this purpose, the tip 4e is arranged close to the peripheral surface of the drum 5.
[0017]
Next, the drum 5 has a cylindrical drum main body 20 having a center axis J in a direction perpendicular to the length direction of the strip piece S1, and the drum main body 20 is rotatably pivotally mounted on the drum main body 20 and its axial direction. And a movable table 21 which can move laterally.
[0018]
In this example, the movable table 21 is slidably held by a pair of rail-shaped linear bearings 22 which are table-shaped and laid in the axial direction. The moving table 21 is connected to a motor (not shown) through a drive transmission means having a well-known structure such as a ball screw mechanism, a gear connecting mechanism, and a belt connecting mechanism, and its rotation is controlled to correspond to the width W of the strip S1. Can be moved intermittently in the axial direction.
[0019]
The drum main body 20 is driven by a motor M3 fixed to the movable table 21, and the rotation of the drum main body 20 winds the strip piece S1 in the circumferential direction. At this time, the circumferential length of the drum body 20 is larger than the length K of the strip S1, and therefore, the strip S1 has a discontinuity Z between its longitudinal edges E. And is discontinuously wound in the circumferential direction.
[0020]
As shown in FIG. 4, the drum main body 20 sequentially moves in the axial direction with the width W of the strip piece S1 at each end of winding of one strip piece S1, and then moves the strip piece S1a wound earlier. The strip piece S1b to be wound next is wound around the longitudinal direction edge E while the longitudinal direction edge E is aligned.
[0021]
As a result, as shown in a plan view in FIG. 5, a desired number of strip pieces S1 are formed in a predetermined width, in which a desired number of strip pieces S1 are arranged in the axial direction and the side edges are bonded. After the strip piece assembly SS is removed from the drum main body 20, it is put into a forming drum f for forming a belt.
[0022]
Here, in the present example, the supply conveyor 4 has a sensor 23 (shown in FIG. 1) for detecting the tip (edge E) of the strip S1, and the tip of the strip S1 reaches the drum peripheral surface from the detection position. Calculation means (not shown) for calculating a required time until the operation is performed.
[0023]
The phase of the drum 5 is controlled so that the respective edges E of the strip S1 are aligned, and a calculation is performed between the end of the winding of the preceding strip S1 and the start of the winding of the next strip S1. The rotation speed of the drum 5 is controlled according to the required time. During the winding of the strip S1, it rotates at a constant speed equal to that of the supply conveyor 4.
[0024]
As described above, since the manufacturing apparatus 1 sequentially winds the plurality of strip pieces S1 on the peripheral surface of the drum 5 while aligning the longitudinal edges E thereof, the cutting angle θ is different. Also, various strip-piece joints SS can be easily formed by controlling the phase of the drum 5. Therefore, it is not necessary to change the arrangement of the apparatus in accordance with the change of the cutting angle θ, the work efficiency at the time of the step change is improved, and the installation space and the apparatus cost of the apparatus can be reduced.
[0025]
In addition, since the strip piece S1 is wound around the discontinuous portion Z, the strip piece assembly SS can be easily removed from the drum 5 without cutting. Moreover, the strip piece assembly SS of various sizes having different lengths K and widths L can be formed by one drum 5 according to the tire size and the like.
[0026]
FIG. 6 shows another embodiment of the strip piece joined body SS formed by the manufacturing apparatus 1 of the present invention. The figure shows a strip formed by a strip S1 having a cutting angle θ of about 90 °, which can be suitably used as a carcass ply for a tire. When the length K is short, as shown in FIG. 6 (B), a plurality of strip pieces S1 are simultaneously formed by winding a plurality of strip pieces S1 around the same circumference at intervals. It is possible to do.
[0027]
As described above, particularly preferred embodiments of the present invention have been described in detail. However, the present invention is not limited to the illustrated embodiments, and can be implemented in various forms.
[0028]
【The invention's effect】
Since the present invention is configured as described above, it is possible to manufacture various strip piece joints having different cutting angles, while keeping the installation space and apparatus cost of the apparatus low, and furthermore, the cutting angle can be reduced. This eliminates the necessity of the arrangement change accompanying the change, and can improve the work efficiency at the time of the step change.
[Brief description of the drawings]
FIG. 1 is a plan view showing one embodiment of a manufacturing apparatus of a strip piece joined body of the present invention.
FIG. 2 is a side view showing a part thereof.
FIG. 3 is a perspective view conceptually showing a cutting device.
FIG. 4 is a diagram illustrating a winding state of a strip piece.
FIG. 5 is a diagram showing an unfolded strip piece assembly.
FIGS. 6A and 6B are diagrams showing another example of a strip piece joined body.
FIG. 7 is a diagram illustrating a process of forming a strip piece joined body.
FIG. 8 is a diagram illustrating a conventional technique.
[Explanation of symbols]
2 Conveying device 3 Cutting device 4 Supply conveyor 5 Drum E Longitudinal edge J Center axis S Strip Se Side edge SS Strip piece assembly

Claims (2)

A long strip whose both side edges are parallel is conveyed in the length direction, and the strip is cut at a cutting angle θ with respect to the length direction, and is cut at a fixed length, and
Supplying the cut strip pieces to the peripheral surface of the drum by a supply conveyor in a direction in which the length direction of the strip pieces is perpendicular to the center axis of the drum,
Further, at each end of winding of one strip, the drum is sequentially moved in the axial direction by the width of the strip, and then the longitudinal edge of the previously wound strip is wound next. A strip strip joined body having a predetermined width in which a plurality of strip pieces are juxtaposed by being wound while being aligned with the longitudinal edge. A transport device that transports a long strip in which both side edges are parallel in the length direction,
A cutting device for forming a strip piece having both ends in the length direction cut by cutting the strip at a cutting angle θ with respect to the length direction and at a fixed length.
A supply conveyor that transports the strip pieces in the longitudinal direction and supplies the strip pieces to the peripheral surface of the drum,
And the above-mentioned drum which winds the supplied strip piece in the circumferential direction,
The drum is arranged so that its central axis is perpendicular to the length direction of the strip piece, and after each winding of one strip piece, the drum is sequentially moved in the axial direction by the width of the strip piece, and then the drum is moved forward. A strip having a predetermined width in which a plurality of strips are arranged in parallel by winding the strip in a longitudinal direction so as to align the longitudinal edges of the strip with the longitudinal edges to be wound next An apparatus for manufacturing a strip piece joined body, which forms a body.

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