CN103817961B - Tyre bead automatic assembling apparatus - Google Patents

Abstract

The tyre bead automatic assembling apparatus that the present invention provides, can suppress the generation of the poor attachment engaging between bad, bead core and bead apex of bead apex when manufacturing tyre bead.After bead apex being wound in the peripheral part of the forming machine making multiple blade parts be formed so that ring-type is arranged side by side, blade part is made to erect, thus bead apex is engaged to form tyre bead with bead core, in above-mentioned tyre bead automatic assembling apparatus, in the face of the outer circumferential side of multiple blade parts, in the way of the end from bead core side erects towards outside, it is provided with tapered portion.In tyre bead automatic assembling apparatus, the angle of tapered portion（α）For 0 ° of ＜ α≤15 °.Tyre bead automatic assembling apparatus are to form truck use, the device of the tyre bead of automobile tyre.

Description

Tyre bead automatic assembling apparatus

Technical field

The present invention relates to by by the bead apex of tire and bead core, automatically fit engagement shapes the tire of tyre bead Circle automatic assembling apparatus.

Background technology

When assembling green tire, using tyre bead automatic assembling apparatus, by cross sectional shape for elongated triangle tyre bead three Angle glue and cross sectional shape are the bead core automatically fit engagement of polygon (usually hexagon), thus shape tyre bead (example As patent documentation 1).

The major part of existing representational tyre bead automatic assembling apparatus is schematically illustrated in Fig. 2.As shown in Fig. 2 tire Circle automatic assembling apparatus 41 possess for bead apex G is wound into columnar forming machine 42.

Forming machine 42 is configured to configure around the central axis L of rotation multiple blade parts 48 with annular arrangement.Each Blade part 48 is configured to：By being erected with rotation shaft 44 for fulcrum rotates, wherein, above-mentioned rotation shaft 44 is arranged on Keep near the tire lip ring 43 of bead core C.

Form tyre bead to carry out as follows using tyre bead automatic assembling apparatus.First, the bead core C of ring-type is installed Tire lip ring 43 in tyre bead automatic assembling apparatus 41.On the other hand, G volume of the bead apex of banding will be configured to Rack It is around in the outer peripheral face 42a of forming machine 42, i.e. the outer peripheral face 48a of each blade part 48.

Then, make to be wound in the bead apex G of forming machine 42 and erected for fulcrum rotates with rotation shaft 44 Blade part 48 together erects, with the bottom surface of bead apex G as Inner peripheral portions, by engaging with the peripheral part of bead core C, thus Form tyre bead.

Patent documentation 1：Japanese Unexamined Patent Publication 2002-52624 publication

However, in existing tyre bead automatic assembling apparatus 41, forming machine 42 is flat forming machine, so when winding is transversal When face is shaped as the bead apex G of general triangular, exists and bead apex G is wound into spiral helicine tendency.Especially More notable when forming truck, the tyre bead of bus tire (TB tire).

In the case that bead apex G is spirally wound in forming machine 42, the volume of the bead apex G being wound Stagger with winding end portion (rear end face) around top portion (front end face), so shown in such as Fig. 3 (A), existing in bead apex G Front end face and rear end face between engage shown in bad or such as Fig. 3 (B), bead core C and bead apex G it Between produce gap and there is the problem of poor attachment.

And, it is likely to result in quality using this tire engaging manufactured by bad, poor attachment tyre bead that creates Bad.

Content of the invention

Therefore, the problem of the present invention is to provide a kind of tyre bead automatic assembling apparatus, when manufacturing tyre bead, can suppress tire The generation of the poor attachment engaging between bad, bead core and bead apex of circle triangle rubber.

Invention described in technical scheme 1 is a kind of tyre bead automatic assembling apparatus, bead apex is wound in make multiple After the peripheral part of the forming machine that blade part is formed so that ring-type is arranged side by side, described blade part is made to erect, thus with described tire The bottom surface of circle triangle rubber is engaged with the peripheral part of bead core for Inner peripheral portions, and described bead apex is connect with described bead core Close and form tyre bead, this tyre bead automatic assembling apparatus is characterised by,

The face of the outer circumferential side of the plurality of blade part is provided with tapered portion, this tapered portion is from the end direction of bead core side Outside erects,

The face of the inner circumferential side of the plurality of blade part is parallel with respect to the central shaft of described forming machine.

On the basis of invention described in technical scheme 2 is the tyre bead automatic assembling apparatus described in technical scheme 1, its feature It is,

The angle [alpha] of described tapered portion is 0 ° of ＜ α≤15 °.

On the basis of invention described in technical scheme 3 is the tyre bead automatic assembling apparatus described in technical scheme 1 or 2, its It is characterised by,

The angle [alpha] of described tapered portion is 2 °≤α≤8 °.

Invention described in technical scheme 4 is the base of the tyre bead automatic assembling apparatus any one of in technical scheme 1～3 On plinth it is characterised in that

Described tyre bead automatic assembling apparatus are to form truck use, the device of the tyre bead of bus tire.

In accordance with the invention it is possible to provide a kind of tyre bead automatic assembling apparatus, tyre bead triangle can be suppressed when manufacturing tyre bead The generation of the poor attachment engaging between bad, bead core and bead apex of glue.

Brief description

Fig. 1 is the figure of the major part of tyre bead automatic assembling apparatus schematically illustrating an embodiment of the invention.

Fig. 2 is the figure of the major part schematically illustrating existing tyre bead automatic assembling apparatus.

Fig. 3 (A) is to schematically illustrate bead apex to engage bad figure, and Fig. 3 (B) is to schematically illustrate bead apex The figure of poor attachment.

Description of reference numerals：1st, 41 ... tyre bead automatic assembling apparatus；2nd, 42 ... forming machines；The periphery of 2a, 42a ... forming machine Face；3 ... blade parts erect mechanism；4th, 43 ... tire lip rings；28th, 48 ... blade parts；The outer peripheral face of 28a, 48a ... blade part；34、 44 ... rotation shaft；35 ... bars；36 ... driving means；C ... bead core；G ... bead apex；The angle of α ... tapered portion； L ... central shaft；S ... stroke.

Specific embodiment

Hereinafter, referring to the drawings and based on embodiment, the present invention is specifically explained.

Fig. 1 is the major part pie graph of an embodiment of the tyre bead automatic assembling apparatus illustrating present embodiment. Tyre bead automatic assembling apparatus 1 possess forming machine 2, blade part erects mechanism 3 and tire lip ring 4.

Forming machine 2 is used for for bead apex G being wound into general cylindrical shape, and with respect to the central axis L rotating abreast Configuration.In addition, this forming machine 2 is made up of multiple blade parts 28, multiple blade parts 28 are configured at the center of rotation with annular arrangement Around axle L.

The outer peripheral face 28a of multiple blade parts 28 constitutes the outer peripheral face 2a of forming machine 2.Outer peripheral face in multiple blade parts 28 28a is provided with tapered portion in the way of the end from bead core C side erects towards outside.

Tapered portion is arranged by the outer peripheral face 28a in blade part 28, even if being thus general triangular by shape of cross section Bead apex G be wound in the periphery of forming machine 2, also this bead apex G will not be wound curl.This result, energy Enough joints suppressing in the past to occur are bad, poor attachment.

The angle [alpha] of tapered portion suitably sets according to the shape of bead apex G, size, but in order to each The bead apex G planting shape/size corresponds to, and is preferably set to the scope of 0 ° of ＜ α≤15 °.

The angle [alpha] of tapered portion be 0 °, i.e. in the case of existing forming machine, as it was previously stated, can lead to engage bad, viscous Connect bad taking place frequently.On the other hand, in the case of the forming machine that α is set to more than 15 °, then contact site is towards opposite Direction offsets, thus leading to engage bad, poor attachment probability rising.

The angle [alpha] of preferred tapered portion is 2 °≤α≤8 °, in this case, can significantly play the effect above.

Blade part erects mechanism 3 and can make all blade part 28 around rotation using driving means 36 via multiple bars 35 Support shaft 34 rotates and erects, and wherein, above-mentioned rotation shaft 34 is arranged on the end of the bead core C side of forming machine 2.That is, if So that multiple bars 35 is advanced together movement along the stroke S of regulation using driving means 36, then shown in dotted line, all blade parts 28 with Rotation shaft 34 erects for fulcrum rotates.On the other hand, if using driving means 36 make multiple bars 35 along regulation stroke S Retreat together and move, then as shown by the solid line, all blade parts 28 are returned to for fulcrum falls down with rotation shaft 34 original State.

Tire lip ring 4 is used for keeping bead core C, and is disposed in the end (left side of Fig. 1) of the bead core C side of forming machine 2.

In the tyre bead automatic assembling apparatus 1 being made up of above structure, by supplying bead core C and the regulation of ring-type The bead apex G of the banding of width, to carry out the formation of tyre bead.

Specifically, the bead apex G being shaped as general triangular of cross section, is configured at forming machine 2 with bottom surface side The mode of the end of bead core C side be wound in the outer peripheral face 28a of the outer peripheral face 2a of forming machine 2, i.e. multiple blade parts 28.This When, as previously described, because being provided with tapered portion in the outer peripheral face 28a of blade part 28, so bead apex G will not be wound into spiral shell Rotation shape is such that it is able to suppression engages bad, poor attachment generation.

Then, be wound in the outer peripheral face 2a of forming machine 2 in bead apex G in the state of, blade part erects mechanism 3 and moves Make, thus driving means 36 make multiple bars 35 advance together movement along the stroke S of regulation.Thus, shown in dotted line, all blades Portion 28 is erected with rotation shaft 34 for fulcrum.As a result, bead apex G is kept intact simultaneously by making the internal diameter of one avris And another avris is by expanding and be integrally formed into annulus tabular, and engage with the peripheral part of the bead core C being installed on tire lip ring 4. Thus terminate the formation of tyre bead.

In the tyre bead obtaining, because suppression bead apex G occurs to engage bad, poor attachment, so using this The quality that tire manufactured by tyre bead can be played stably.

In addition, the wall thickness of the bead apex with tire (card tire for vehicles, bus tire) for the TB is thicker, so In existing tyre bead automatic assembling apparatus, bead apex is particularly susceptible for spirally being wound in forming machine.However, by making With the tyre bead automatic assembling apparatus of present embodiment, thus can significantly play when forming tyre bead suppression occur to engage bad, The effect of poor attachment.

Embodiment

1. embodiment and comparative example

Using the tyre bead being formed forming machine by the blade part of the tapered portion in outer peripheral face with the angle [alpha] shown in table 1 certainly Dynamic assembling device, the bead apex constituted by the bead core of 22.5-63S/1 and with hard formation and packed layer, to form tire Circle.

The Assembly Action of each tyre bead automatic assembling apparatus executes one day respectively repeatedly, to evaluate the generation shape of defective work Condition.

Specifically, the front end face to bead apex is bad with engaging of the junction surface of rear end face, the tire at junction surface The machining status of the tyre bead obtained by poor attachment between circle core and bead apex etc. are evaluated.

Result illustrates in Table 1.In addition, in table 1, " ◎ " represents that the incidence rate of defective work is less than 1%, and "○" represents not The incidence rate of certified products is 1% less than 3%, and "×" represents that the incidence rate of defective work is more than 3%.

Table 1

Specification

Embodiment 1

Embodiment 2

Embodiment 3

Embodiment 4

Embodiment 5

Embodiment 6

Comparative example 1

Comparative example 2

The angle (α) of tapered portion

1°

2°

5°

8°

10°

15°

0°

18°

Materials processing quality

○

◎

◎

◎

○

○

×

×

Embodiment 1～embodiment 6 according to table 1：It is 0 ° of ＜ α in the angle [alpha] of the tapered portion of the outer peripheral face of blade part In the case of≤15 °, the joint that can fully suppress junction surface between the front end face of bead apex and rear end face is bad, The generation of the poor attachment between the bead core at junction surface and bead apex.

Understand especially in accordance with embodiment 2～embodiment 4：The feelings being 2 °≤α≤8 in the angle [alpha] of the tapered portion of outer peripheral face Under condition, suppression further engages bad, poor attachment generation.

In addition, according to comparative example 1：In the case that the angle [alpha] of the tapered portion of outer peripheral face as in the past is 0 °, then Cannot fully suppress to engage bad, poor attachment generation.

In addition, according to comparative example 2：In the case that the angle [alpha] of the tapered portion of outer peripheral face is too more than 15 °, also no Method fully suppresses to engage bad, poor attachment generation.

More than, described the present invention based on embodiment, but the present invention is not limited to above-mentioned embodiment.With In the identical and equivalent scope of the present invention, various changes can be applied to above-mentioned embodiment.

Claims (4)

1. a kind of tyre bead automatic assembling apparatus, bead apex is wound in make multiple blade parts so that ring-type is arranged side by side shape After the peripheral part of forming machine becoming, described blade part is made to erect, thus with the bottom surface of described bead apex as Inner peripheral portions And engage with the peripheral part of bead core, described bead apex is engaged with described bead core and forms tyre bead, this tyre bead is automatic Assembling device is characterised by,

The face of the outer circumferential side of the plurality of blade part be provided with for described bead apex winding tapered portion, this tapered portion from The end of bead core side erects towards outside,

The face of the inner circumferential side of the plurality of blade part is parallel with respect to the central shaft of described forming machine.

2. tyre bead automatic assembling apparatus according to claim 1 it is characterised in that

The angle [alpha] of described tapered portion is 0 ° of ＜ α≤15 °.

3. tyre bead automatic assembling apparatus according to claim 1 and 2 it is characterised in that

The angle [alpha] of described tapered portion is 2 °≤α≤8 °.

4. tyre bead automatic assembling apparatus according to claim 1 and 2 it is characterised in that

Described tyre bead automatic assembling apparatus are to form truck use, the device of the tyre bead of bus tire.