JP6226189B2 - Bead transfer device with stiffener - Google Patents

Description

  The present invention relates to an apparatus for conveying a bead with a stiffener having a bead core with a stiffener.

  A bead with a stiffener is formed in such a manner that a belt-like member extruded from an extruder is wound around an annular bead core by a molding machine to form a flat conical shape, and a stiffener is attached to the bead. The stiffener expands from the bead core in a conical shape and expands in diameter. The stiffener is tapered with a thickness decreasing toward the bottom of the tip.

The stiffened bead thus formed in an annular shape is conveyed, inspected, and supplied to the tire manufacturing process.
The bead with a stiffener after molding is in a high temperature state with heat in the extrusion process of the belt-shaped member, and is easily contracted and deformed with cooling.
As a general method for transporting the bead, there is a method as described in Japanese Patent Application Laid-Open No. H11-228707.

JP-A-10-119143

Patent Document 1 is an example in which a bead with an annular stiffener is hung and conveyed in a vertical position so as to be hooked on a horizontally extending hanger arm, and four hanger arms projecting in a horizontal radial manner turn. A bead hanger (finished bead hanger 6) is disclosed.
Each hanger arm can be moved by swiveling an annular stiffener bead alternately with a separator and turning.

However, the bead with an annular stiffener that is hooked on the hanger arm is in a state of being hung in a vertical posture, and no force is applied to maintain its shape. Since it is lowered, there is also a deformation resulting from the inability to maintain the annular shape, and it is difficult to carry while maintaining the required shape.
Once the bead with a stiffener has been deformed, it is difficult to correct a defective product and it is not easy to correct a good product.

  The present invention has been made in view of the above points, and the object of the present invention is to provide a bead carrying device with a stiffener capable of carrying a stiffened bead while maintaining a required shape.

In order to achieve the above object, the invention according to claim 1
The rotating endless rotating member is provided with a plurality of receiving bases in the rotating direction, the receiving surface having a flat conical surface substantially the same shape as the flat conical surface formed by the bead with stiffener .
The cradle is a bead transport apparatus with a stiffener, comprising a plurality of strip plates divided into a plurality of strips in a rotating direction .

The invention according to claim 2
The bead conveying device with a stiffener according to claim 1 ,
The endless rotating member is bridged between the upstream rotating shaft and the downstream rotating shaft,
The upper moving portion of the endless rotating member that moves upward between the upstream rotating shaft and the downstream rotating shaft is guided by the guide member so as to move while curving upward in an arc shape. It is characterized by.

The invention described in claim 3
The bead conveying device with a stiffener according to claim 2 ,
The downstream rotary shaft is positioned below the upstream rotary shaft,
The upper moving portion is guided by the guide member so as to move downward while curving upward from the upstream rotary shaft to the downstream rotary shaft.

The invention according to claim 4
In the bead conveying apparatus with a stiffener according to claim 2 or claim 3 ,
A pair of chains in which the endless rotating member is respectively bridged between a pair of upstream sprockets fitted to the upstream rotary shaft and a pair of downstream sprockets fitted to the downstream rotary shaft And a plurality of strip-like plates of the cradle are constructed between the same pair of chains.

  According to the bead transport device with a stiffener according to claim 1, the receiving base configured to have a flat conical surface substantially the same shape as the flat conical surface formed by the bead with stiffener on the rotating endless rotating member. Since a plurality of beads are provided in the rotation direction, the bead with a stiffener placed on the receiving surface of the cradle is pressed against the receiving surface formed on the required flat conical surface by its own weight, and the deformation due to contraction is suppressed, so that it is required. It can be transported while maintaining its shape.

According to the bead conveying device with a stiffener according to claim 1 , the cradle is composed of a plurality of strip plates that are divided into a plurality of strips in the rotation direction. The curved rotating member can be smoothly rotated even in the bending portion where the moving direction is changed.

According to the bead conveyance device with a stiffener according to claim 2 , the endless rotating member is bridged between the upstream rotating shaft and the downstream rotating shaft, and the upstream rotating shaft and the downstream of the endless rotating member. The upper moving portion that moves upward with respect to the side rotation shaft is guided by the guide member so as to move while curving upward in an arc shape, so that the receiving surface formed by the plurality of strip plates of the cradle is the upper side The curved portion of the moving part is curved upward and expanded, and the time for the stiffener bead to be pressed from above is increased, so that the bead with stiffener placed on the receiving surface has the required flat conical shape. The mold can be reliably determined and transported.

According to the bead conveyance device with a stiffener according to claim 3, the downstream rotary shaft is positioned below the upstream rotary shaft, and the upper moving portion moves downward while curving from the upstream rotary shaft to the downstream rotary shaft. Thus, the guide member guides the bead with a stiffener smoothly in the downward direction as well as in the horizontal direction while simultaneously maintaining the required shape.

According to the bead conveyance device with a stiffener according to claim 4, the pair of upstream sprockets having the endless rotating member fitted to the upstream rotating shaft and the pair of downstream sprockets fitted to the downstream rotating shaft; Since a plurality of strip-like plates are installed between the pair of chains, a plurality of strip-like plates installed between the pair of chains are constructed. With the bead transport device with a stiffener having a simple structure in which the cradle is configured, the bead with a stiffener placed on the cradle can be transported reliably and smoothly while maintaining the required shape.

It is a whole top view of the bead conveyance device with a stiffener concerning one embodiment of the present invention. It is a whole side view of the bead conveyance device with the stiffener. It is a partially expanded plan view of the bead conveyance device with the stiffener. It is a partially expanded side view of the bead conveyance device with the stiffener. It is sectional drawing (VV sectional view taken on the line of FIG. 1) of the bead conveyance apparatus with a stiffener.

Hereinafter, an embodiment according to the present invention will be described with reference to FIGS.
An overall plan view of a bead conveyance device A with a stiffener according to an embodiment to which the present invention is applied is shown in FIG. 1, and an overall side view is shown in FIG.
In this specification, the front-rear and left-right directions are determined such that the transport direction of the bead transport apparatus A with a stiffener is the front, the left-hand direction when facing forward is the left, and the right-hand direction is the right.

  The support stay 2 extends obliquely upward from the middle of the center strut 1 that forms a pair on the left and right sides, and the upper end of the support stay 2, the upper end of the center strut 1, and the upper end of the downstream strut 3 erected on the downstream side, A pair of left and right upper arcuate guide members 15L and 15R and lower arcuate guide members 16L and 16R that are curved in an arc shape upward are supported.

Between the left and right upstream ends of the pair of left and right upper arcuate guide members 15L and 15R and the lower arcuate guide members 16L and 16R, the upstream rotary shaft 11 is rotatably supported in the horizontal direction. A pair of left and right upstream sprockets 11L and 11R are fitted on both sides of the upstream rotating shaft 11.
Similarly, a downstream rotary shaft 12 is rotatably supported in the horizontal direction on the upper side of the left and right pair of downstream struts 3, and a pair of downstream sprockets 12L are provided on both sides of the downstream rotary shaft 12. , 12R are fitted.

The downstream rotary shaft 12 is at a lower position than the upstream rotary shaft 11.
Between a pair of left and right upstream sprockets 11L and 11R at a high position and a pair of left and right downstream sprockets 12L and 12R at a low position, a pair of left and right endless rotating members 13L and 13R are bridged. ing.

The upper end of the central column 1 located in the substantially middle stream is at the same height as the upstream sprockets 11L and 11R.
The pair of left and right upper arcuate guide members 15L and 15R and lower arcuate guide members 16L and 16R are curved upward in an arc shape between the upstream sprockets 11L and 11R and the downstream sprockets 12L and 12R. Provided.

In the chains 13L and 13R, the upper moving parts 13La and 13Ra moving on the upper side between the upstream sprockets 11L and 11R and the downstream sprockets 12L and 12R are directed from the upstream sprockets 11L and 11R toward the downstream sprockets 12L and 12R. The lower moving parts 13Lb and 13Rb that move in the lower direction, on the contrary, move from the downstream sprockets 12L and 12R toward the upstream sprockets 11L and 11R.
The upper moving portions 13La and 13Ra are supported by the upper arcuate guide members 15L and 15R from the bottom so as to be curved in an arc shape, and the lower moving portions 13Lb and 13Rb are supported by the lower arcuate guide members 16L and 16R. It is supported by curving in an arc shape to support from below.

  Therefore, the upper moving portions 13La and 13Ra of the chains 13L and 13R are curved upward in an arc along the upper arcuate guide members 15L and 15R, and are guided from the upstream sprockets 11L and 11R to the downstream sprockets 12L and 12R. On the other hand, the lower moving portions 13Lb and 13Rb of the chains 13L and 13R are curved in an arc shape upward along the lower arcuate guide members 16L and 16R, and are connected to the upstream sprocket 11L from the downstream sprockets 12L and 12R. , 11R.

The lower moving parts 13Lb and 13Rb are supported by the upstream idle sprockets 17L and 17R from below at the position close to the upstream sprockets 11L and 11R, and the lower moving parts 13Lb and 13Rb are guided slightly upward. The winding angle of the chains 13L and 13R on the upstream side sprockets 11L and 11R is increased to stabilize the rotation.
Similarly, the downstream moving parts 13Lb and 13Rb are supported by the downstream idle sprockets 18L and 18R from below at the position close to the downstream sprockets 12L and 12R, and the lower moving parts 13Lb and 13Rb are guided slightly upward. The rotation angle is stabilized by increasing the winding angle of the downstream idle sprockets 18L, 18R of the chains 13L, 13R.

A cradle 20 is provided between the left and right chains 13L, 13R.
A plurality of receiving bases 20 are provided at equal intervals in the rotation direction of the chains 13L and 13R.
Each cradle 20 further includes a plurality of strip plates 21 divided into a plurality of strips in the direction of rotation of the chains 13L and 13R, and each strip plate 21 is installed on the chains 13L and 13R.

The strip plates 21 are long in the left-right width direction, and the left and right end portions are fixed to the outer peripheral side of each link of the chains 13L, 13R, and are arranged with a slight gap sequentially in the rotation direction.
Since the upper moving portions 13La and 13Ra of the chains 13L and 13R move while being guided by the upper arcuate guide members 15L and 15R, the strip plates 21 that move above the rotating chains 13L and 13R are arranged on an arc. The

The arc formed by the upper moving portions 13La and 13Ra of the chains 13L and 13R in the bead transport apparatus A with the stiffener has a radius of curvature of about 4000 mm, and a width of about 1000 mm between the left and right chains 13L and 13R. The base 20 has a rectangular shape with a width of about 1000 mm in the front-rear and left-right directions, and can generally correspond to various sizes of the bead W with a stiffener that varies depending on the type of tire.
Note that the strips 21 moving on the lower side are also arranged on the arc by the lower arcuate guide members 16L and 16R.

The shape of the outer peripheral side surface of the strip 21 is changed in order according to the arrangement order, and is substantially the same shape as the flat conical surface formed by the bead W with the stiffener as the receiving surface 20c of the receiving base 20 in which the strips 21 moving on the upper side are gathered. The outer peripheral side surface of each strip 21 is formed so as to form a flat conical surface (see FIGS. 4 and 5).
Accordingly, a flat conical receiving surface 20c is formed in an annular shape on the receiving base 20 configured in a rectangular shape (see FIG. 3).

  In addition, since the circular arc formed by the upper moving portions 13La and 13Ra of the chains 13L and 13R affects the flat conical surface of the receiving surface 20c of the cradle 20, if the radius of curvature of the circular arc is reduced beyond a certain limit, it is necessary. This flat conical surface cannot be formed on the receiving surface 20c of the receiving base 20.

  Referring to FIG. 2, a motor 30 is installed on a column 4 erected in the vicinity of the right downstream column 3, and a drive sprocket 31 fitted to the drive shaft of the motor 30 and a downstream rotation A drive chain 33 is suspended between the driven sprocket 32 fitted to the right end of the shaft 12 (see FIG. 2).

  Therefore, in the bead transport apparatus A with the stiffener, the downstream rotary shaft 12 is driven to rotate by the drive of the motor 30 via the drive chain 33, and the downstream sprockets 12L and 12R fitted to the downstream rotary shaft 12 are rotated. As a result, the chains 13L and 13R are rotated between the upstream sprockets 11L and 11R, and the cradle 20 which is a set of a plurality of strip plates 21 installed on the chains 13L and 13R is rotated together with the chains 13L and 13R.

  The cradle 20 provided on the upper moving portions 13La and 13Ra of the chains 13L and 13R facing upward moves downward along the upper arcuate guide members 15L and 15R with the receiving surface 20c facing upward. The strips 21 are sequentially turned downward by the side sprockets 12L and 12R, and the receiving surface 20c is directed downward as the receiving base 20 of the lower moving portions 13Lb and 13Rb, and upward along the lower arcuate guide members 16L and 16R. The strips 21 are sequentially moved upward by the upstream side sprockets 11L and 11R, and are rotated so as to become the cradle 20 of the upper moving parts 13La and 13Ra again.

  The bead W with a stiffener placed on the receiving surface 20c configured in a flat conical shape of the cradle 20 is formed so as to be wound around the annular bead core Wc with reference to FIG. The stiffener Ws is formed and attached, and the annularly shaped stiffener Ws expands in a conical shape from the bead core Wc and expands, and the thickness decreases as it goes to the hem at the tip. ing.

By rotating the chains 13L and 13R, the strip plates 21 are sequentially turned upward by the upstream sprockets 11L and 11R to become the receiving base 20 of the upper moving portions 13La and 13Ra. When the bead W with the stiffener is placed, the bead W with the stiffener is conveyed toward the downstream rotary shaft 12 diagonally forward and downward along the upper arcuate guide members 15L and 15R while being placed on the cradle 20. The
FIG. 5 is a cross-sectional view taken along the line VV in FIG. 1 and shows the cradle 20 before the bead W with the stiffener is placed. If the bead W with the stiffener is placed, the bead W with the stiffener is virtually assumed. And shown in cross section.

The beads W with stiffeners can be successively carried and transported on a receiving base 20 constituted by the strip plates 21 sequentially turning upward by the upstream sprockets 11L and 11R.
Referring to FIG. 2, since the upstream side of the upper moving portions 13La and 13Ra moves substantially horizontally, the cradle 20 is also in a substantially horizontal posture, so that it is easy to accurately place the bead W with a stiffener on the receiving surface 20c.
On the downstream side rotating shaft 12 side, the worker removes the stiffener-attached bead W that has been carried on the cradle 20 and loads it on a loading cart or the like to be supplied to the next process.
Since the downstream side of the upper moving parts 13La and 13Ra moves obliquely downward, the cradle 20 is also inclined on the downstream rotary shaft 12 side, so that the stiffener bead W placed on the cradle 20 can be easily removed.

In the bead transport device A with a stiffener, the upper moving portions 13La and 13Ra of the rotating chains 13L and 13R are configured to have a flat conical surface substantially the same shape as the flat conical surface formed by the bead W with stiffener on the receiving surface 20c. Since a plurality of the bases 20 are provided in the rotation direction, the bead W with a stiffener placed on the receiving surface 20c of the receiving base 20 is pressed against the receiving surface 20c formed on the required flat conical surface by its own weight. It can be transported in a state where deformation due to shrinkage is suppressed and the required shape is maintained.
Even if the molded bead W with a stiffener is a defective product, the shape is maintained without being deformed during conveyance, and a situation in which it cannot be reworked due to deformation can be avoided.

  The cradle 20 of the stiffener-equipped bead transport device A is composed of a plurality of strip plates 21 divided into a plurality of strips in the rotation direction, so that the cradle 20 can be easily bent together with the chains 13L and 13R. The chains 13L and 13R can be smoothly rotated even in the bending portion where the moving direction is changed.

  The upper arcuate guide member 15L so that the upper moving parts 13La and 13Ra that move upward between the upstream rotary shaft 11 and the downstream rotary shaft 12 in the chains 13L and 13R move while curving upward in an arc. , 15R, the receiving surface 20c formed by the plurality of strip plates 21 of the cradle 20 is curved upward and developed by the arcuate curved surfaces of the upper moving portions 13La and 13Ra, and the cradle is linearly Compared to the fact that the receiving surface always moves diagonally upward in one direction, the section in which the receiving surface 20c is conveyed upward is conveyed while conveying the bead W with stiffener, so that the bead W with stiffener is It takes a long time to be pressed against the receiving surface 20c from above, and deformation due to contraction of the bead with stiffener W is sufficiently suppressed, so that the bead W with stiffener can be reliably shaped into the required flat conical shape and conveyed.

  The upper arcuate guide member is arranged such that the downstream rotary shaft 12 is positioned below the upstream rotary shaft 11 and the upper moving portions 13La and 13Ra move downward while curving from the upstream rotary shaft 11 to the downstream rotary shaft 12. Since 15L and 15R guide, bead W with a stiffener can be smoothly conveyed while maintaining a required shape simultaneously not only in the horizontal direction but also downward.

  That is, this stiffener bead transport device A can cope with two operations of moving in the horizontal direction by a general conveyor and then moving downward by the vertical moving means with one operation of moving in an arc shape. The structure can be simplified and the cost can be reduced.

  If the downstream rotary shaft 12 is positioned obliquely upward with respect to the upstream rotary shaft 11 and curved upward to move the cradle 20, the bead W with stiffener can be easily maintained in shape. It can be easily transported obliquely upward.

  In this bead conveying apparatus A with a stiffener, a chain is used as the endless rotating member, but a belt or the like is also applicable.

A ... Bead conveying device with stiffener,
W ... Bead with stiffener, Wc ... Bead core, Ws ... Stiffener,
1 ... Center support, 2 ... Support stay, 3 ... Downstream support, 4 ... Support,
11 ... Upstream rotary shaft, 11L, 11R ... Upstream sprocket, 12 ... Downstream rotary shaft, 12L, 12R ... Downstream sprocket, 13L, 13R ... Chain, 15L, 15R ... Upper circular guide member, 16L, 16R ... Lower arc guide member, 17L, 17R ... Upstream idle sprocket, 18L, 18R ... Downstream idle sprocket,
20 ... cradle, 20c ... receiving surface, 21 ... strip,
30 ... motor, 31 ... drive sprocket, 32 ... driven sprocket, 33 ... drive chain.

Claims (4)

The rotating endless rotating member is provided with a plurality of receiving bases in the rotating direction, the receiving surface having a flat conical surface substantially the same shape as the flat conical surface formed by the bead with stiffener .
The pedestal comprises a plurality of strip plates divided into a plurality of strips in the rotational direction, and the bead transport apparatus with a stiffener is characterized in that: The endless rotating member is bridged between the upstream rotating shaft and the downstream rotating shaft,
The upper moving portion of the endless rotating member that moves upward between the upstream rotating shaft and the downstream rotating shaft is guided by the guide member so as to move while curving upward in an arc shape. The bead transport device with a stiffener according to claim 1 . The downstream rotary shaft is positioned below the upstream rotary shaft,
3. The bead transport apparatus with a stiffener according to claim 2, wherein the upper moving portion is guided by the guide member so as to move downward while being curved upward from the upstream rotary shaft to the downstream rotary shaft. . A pair of chains in which the endless rotating member is respectively bridged between a pair of upstream sprockets fitted to the upstream rotary shaft and a pair of downstream sprockets fitted to the downstream rotary shaft 4. A bead transport apparatus with a stiffener according to claim 2 or 3 , wherein a plurality of strip-like plates of the cradle are constructed between the same pair of chains.

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