阅读说明：本技术 轮胎成型机的轮胎成型方法 (The tire moulding method of tyre building machine ) 是由 李彦海 李国松 于 2019-08-30 设计创作，主要内容包括：本发明公开了一种轮胎成型机的轮胎成型方法,包括以下步骤：中鼓收缩,中鼓的两个鼓肩之间的第一距离,成型鼓旋转以卷取胎体料；中鼓内充气,两个半鼓轴向向内移动直至中鼓的两个鼓肩之间的第二距离,停止对中鼓充气；中鼓径向扩张,将胎圈反包入胎体料内；中鼓径向扩张,在胎体料的两侧贴合胎侧,侧鼓轴向远离中鼓移动以让位出一空间,将胎侧正包入胎体料形成胎体组件；中鼓径向扩张,胎圈支撑单元径向扩张以周向锁定胎圈,对胎体组件充气,且两个半鼓轴向相对移动并嵌入配合以使胎面组件与胎体组件恰好贴合,辅助成型单元与复合装置辅助成型鼓将胎面组件与胎体组件滚压复合以形成胎胚。本发明可以能够均匀拉伸胶料,提高了轮胎成型效果。(The invention discloses a kind of tire moulding methods of tyre building machine, comprising the following steps: middle drum is shunk, and the first distance between the bulging shoulder of two of middle drum, assembly drum is rotated to batch carcass material；Inflation in middle drum, two and half drums are moved axially inward the second distance until between two bulging shoulders of middle drum, stop centering drum inflation；Middle bulging radial dilatation, tyre bead anti-package is entered in carcass material；Middle bulging radial dilatation is bonded sidewall in the two sides of carcass material, and side drum is mobile with a space of stepping down out axially away from middle drum, and sidewall is just being packed in carcass material and is forming carcass component；Middle bulging radial dilatation, bead support unit radial is expanded with circumferential locked bead, carcass component is inflated, and two and half rouse axially opposing movement and are embedded in cooperation so that tread package is bonded just with carcass component, assistant formation unit rolls tread package and carcass component with set composite assistant formation drum compound to form fetus.The present invention can Uniform Tension sizing material, improve tire building effect.)

1. a kind of tire moulding method of tyre building machine, which is characterized in that the tyre building machine includes molding tread package (7) assembly drum (1) of tread drum, shaped carcass component, assistant formation unit, set composite, tread drum driving box and at Type rouses driving box, and the tread drum driving box controls described in the tread drum rotation or mobile, the described assembly drum driving box control Assembly drum (1) rotation is mobile, and the assembly drum (1) includes two symmetrically arranged side drums (10) and is located at two sides Middle drum (11) between drum (10), the middle drum (11) include two and half drums (110) that axially can be mutually embedded in cooperation, the side Drum (10) connect and can relatively move with half drum (110), and the middle drum (11) radially has contraction state and expansion shape State, two side drums (10) are equipped with bead support unit (102) and anti-package unit (101), the bead support unit (102) can radial contraction or expansion, the method for the forming tire the following steps are included:

Step 1, the middle drum (11) is in contraction state, and the distance between two bulging shoulders of the middle drum (11) are first distance (B), assembly drum (1) rotation is to batch carcass material (6)；

Step 2, inflation in the middle drum (11), two half drums (110) relatively move axially inwards, when the middle drum (11) The distance between two bulging shoulders when being second distance (A), stop to inflation in the middle drum (11)；

Step 3, middle drum (11) radial dilatation, the assistant formation unit assist the assembly drum (1) by tyre bead (4) anti-package Enter in carcass material (6).

Step 4, the middle drum (11) is in expansion state, is bonded sidewall in the two sides for the carcass material (6) for being surrounded by the tyre bead (4) (5), the side drum (10) is mobile with a space of stepping down out axially away from the middle drum (11), and the assistant formation unit assists institute It states assembly drum (1) and sidewall (5) is just being packed in carcass material (6) formation carcass component；

Step 5, the middle drum (11) is in expansion state, and bead support unit (102) radial dilatation locks institute with circumferential It states tyre bead (4), the assembly drum driving box inflates carcass component, and axially opposing movements of two half drums (110) and embedding Enter and cooperates so that the inner peripheral surface of the tread package (7) is bonded just with the outer circumference surface of carcass component, the set composite Assist the assembly drum (1) that tread package (7) and the rolling of carcass component are compound to form fetus.

2. the tire moulding method of tyre building machine as described in claim 1, which is characterized in that the tyre building machine also wraps Include at least one tyre bead positioning device (20) being axially movable, the step 1 further include:

The tyre bead positioning device (20) carries the axial designated position for being moved to the assembly drum (1) of two tyre beads (4).

3. the tire moulding method of tyre building machine as described in claim 1, which is characterized in that the step 2 further include:

First distance (B) is greater than second distance (A), and middle drum described in first distance (B) and the difference about twice of second distance (A) (11) radial dilatation height (H).

4. the tire moulding method of tyre building machine as claimed in claim 2, which is characterized in that the step 2 further include:

After tyre bead (4) is moved to the designated position of the assembly drum (1) by the tyre bead positioning device (20), the tyre bead branch Supportting unit (102) radial dilatation can circumferential locked bead (4).

5. the tire moulding method of tyre building machine as claimed in claim 4, which is characterized in that the step 3 further include:

When middle drum (11) radial dilatation, the end face of close middle drum (11) side of tyre bead (4) is against the middle drum (11), middle drum (11) the axial limiting tyre bead (4).

6. the tire moulding method of tyre building machine as described in claim 1, which is characterized in that the assistant formation unit is also Including doubling roller (28), the step 4 further include:

The part for being less than carcass material (6) on doubling roller (28) rolling sidewall 5, so that without departing from carcass material (6) edge Part sidewall (5) is fitted closely in carcass material (6).

7. the tire moulding method of tyre building machine as described in claim 1, which is characterized in that the assistant formation unit is also Including positive closure pressure roller (23), the step 4 further include:

The positive closure pressure roller (23) is movable in the space, and will exceed part sidewall (5) rolling at carcass material (6) edge Fit in carcass material (6).

8. the tire moulding method of tyre building machine as described in claim 1, which is characterized in that the step 5 further include:

The axially opposing movements of two half drums (110) and be embedded in cooperation until between two bulging shoulders of the middle drum (11) away from From the overdetermination offset (C) for tire technique.

9. the tire moulding method of tyre building machine as described in claim 1, which is characterized in that the tread package (7) with Carcass component is combined into before fetus further include:

The set composite is mobile with by tread package (7) corresponding position to carcass component on the assembly drum (1) or described Assembly drum (1) is mobile with carcass component is corresponding to the tread package (7) on the set composite.

10. the tire moulding method of tyre building machine as claimed in claim 9, which is characterized in that the set composite includes Center pressure roller (24) and shoulder pressure roller (25), the step 4 further include:

After the inner peripheral surface of the tread package (7) is bonded just with the outer circumference surface of the carcass component, the assembly drum (1) it rotates, the patch of the center pressure roller (24) and the shoulder pressure roller (25) the rolling tread package (7) and the carcass component So that the two is fitted closely to form fetus at conjunction.

Technical field

The present invention relates to the technical field of tire building more particularly to a kind of tire moulding methods of tyre building machine.

Background technique

One-stage building process is that tread package realizes that assembly, carcass component are realized on assembly drum on tread drum Then assembly is transmitted to tread package on assembly drum and realizes tire building movement.In the prior art, carcass component at When forming on type drum, especially after assembly drum has pasted liner and cord fabric sizing material, the middle first radial dilatation of drum drum watt of assembly drum is right It positions tyre bead, anti-package sizing material on assembly drum again afterwards, the last layer cord and sidewall material is then bonded on assembly drum and by tire Side expect positive closure, finally again by assembly drum carcass component and tread package it is compound.But in such molding mode, middle drum drum watt It will cause the local elongation of sizing material during radial dilatation, how to adjust or control the stretching of sizing material to suitable range is one Big difficult point, the careless slightly quality problems that will cause tire.

In addition, in the prior art, tyre bead positioning device needs for tyre bead to be resisted against the two sides of middle drum after middle bulging radial dilatation End face, and tyre bead positioning device is generally driven by servo-actuating device and is positioned, if servo-actuating device positions mistake, is carried The tyre bead positioning device of tyre bead can hit the middle drum with sizing material in moving process, and middle drum and sizing material is caused to be possible to be damaged It is bad.

Summary of the invention

The purpose of the present invention is to provide one kind in shaped carcass component Uniform Tension sizing material and to guarantee molding effect The tire moulding method of the tyre building machine of fruit.

To reach this purpose, the invention adopts the following technical scheme:

A kind of tire moulding method of tyre building machine, the tyre building machine include form tread package tread drum, Assembly drum, assistant formation unit, set composite, tread drum driving box and the assembly drum driving box of shaped carcass component, it is described Tread drum driving box controls the tread drum rotation or mobile, described assembly drum driving box controls the assembly drum rotation or moves Dynamic, the assembly drum includes two symmetrically arranged side drums and the middle drum between two side drums, the middle bulge Two and half drums that axially can be mutually embedded in cooperation are included, the side is bulging to be connected and can relatively move with half drum, and the middle drum exists Radial to have contraction state and expansion state, two side drums are equipped with bead support unit and anti-package unit, the tyre bead Support unit can radial contraction or expansion, the method for the forming tire the following steps are included:

Step 1, the middle drum is in contraction state, and the distance between bulging shoulder of two of the middle drum is first distance, institute Assembly drum rotation is stated to batch carcass material；

Step 2, inflation in the middle drum, two half drums relatively move axially inwards, when two drums of the middle drum When the distance between shoulder is second distance, stop to being inflated in the middle drum；

Step 3, the middle bulging radial dilatation, the assistant formation unit assist the assembly drum that tyre bead anti-package is entered carcass In material.

Step 4, the middle drum is in expansion state, is bonded sidewall in the two sides for the carcass material for being surrounded by the tyre bead, described Side drum is mobile with a space of stepping down out axially away from the middle drum, the assistant formation unit assist the assembly drum by sidewall just It is packed in carcass material and forms carcass component；

Step 5, the middle drum is in expansion state, and the bead support unit radial expansion locks the tire with circumferential Circle, the assembly drum driving box inflate carcass component, and two described half are roused axially opposing movement and are embedded in cooperation so that institute The inner peripheral surface for stating tread package is bonded just with the outer circumference surface of carcass component, and the set composite assists the assembly drum will Tread package and the rolling of carcass component are compound to form fetus.

Further, the tyre building machine further includes at least one tyre bead positioning device being axially movable, the step Rapid 1 further include: the tyre bead positioning device carries the axial designated position for being moved to the assembly drum of two tyre beads.

Further, the step 2 further include: first distance is greater than second distance, and first distance and second distance About 2 times of the difference middle bulging radial dilatation height.

Further, the step 2 further include: when tyre bead is moved to the finger of the assembly drum by the tyre bead positioning device Positioning postpones, and the bead support unit radial expansion can circumferential locked bead.

Further, the step 3 further include: when the middle bulging radial dilatation, tyre bead is close to the middle bulging side End face is against the middle drum, the middle bulging axial limiting tyre bead.

Further, the assistant formation unit further includes doubling roller, the step 4 further include: the doubling roller rolling The part for being less than carcass material on sidewall, so that the part sidewall without departing from carcass material edge is fitted closely in carcass material.

Further, the assistant formation unit further includes positive closure pressure roller, the step 4 further include: the positive closure pressure roller It is movable in the space, and the part sidewall that will exceed carcass material edge is bonded to carcass material.

Further, the step 5 further include: two described half are roused axially opposing movement and are embedded in cooperation until in described The distance between bulging shoulder of bulging two is the overdetermination offset of tire technique.

Further, the tread package and carcass component are combined into before fetus further include: the set composite is mobile With tread package is corresponding mobile with carcass component is corresponding to the position of carcass component on the assembly drum or the assembly drum Tread package on to the set composite.

Further, the set composite includes center pressure roller and shoulder pressure roller, the step 4 further include: when the tyre surface After the inner peripheral surface of component is bonded just with the outer circumference surface of the carcass component, the assembly drum rotation, the center pressure roller The joint place for rolling the tread package and the carcass component with the shoulder pressure roller fits closely the two to form fetus.

Beneficial effects of the present invention: keeping drum shoulder first distance when the flat drum type state of middle drum, before anti-package, two and half drum axis It is inflated to inward against movement, while in middle drum, when the distance between two bulging shoulders of drum are second distance in the middle, drum in stopping Interior inflation, so that first distance and the difference of second distance are similar in 2 times after drum radial dilatation height, middle drum radially expands again .Be equivalent to since the length for the second carcass material being maintained on middle drum is practical between two bulging shoulders of middle drum first away from From, and two and half drums make the distance between two bulging shoulders of middle drum become second distance after relatively moving axially inwards, and the One distance and the difference of second distance are similar to drum radial dilatation height in 2 times, therefore are equivalent to the second carcass material and have reserved 2 times The radial dilatation height of middle drum.At this point, middle drum radial dilatation again.And in the prior art, before positive closure, the bulging shoulder of two of middle drum The distance between it is constant always, therefore be bound to generate stretching action to the second carcass material when middle drum expansion, and mainly stretch Position is located at the two sides drum shoulder of middle drum, and the second carcass material has first been reserved middle drum before middle drum expansion by method of the invention Length needed for rising, and in order to guarantee that the uniformity that carcass material stretches is acted uniform during length in reserve by inflation Carcass material is stretched, while also avoiding carcass material and being adhered or be superimposed.

Detailed description of the invention

The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:

Fig. 1 is the three-dimensional assembly diagram for the tire assembly drum of the tyre building machine of forming tire fetus.

Fig. 2 is the cross-sectional view of tire assembly drum.

Fig. 3 is that the partial schematic diagram after carcass material is placed outside tire assembly drum shown in Fig. 2.

Fig. 4-1 is that positioning device carries tyre bead close to the schematic diagram of the assembly drum and carcass material periphery.

Fig. 4-2 is the schematic diagram that positioning device is placed in assembly drum described in Fig. 3 and carcass material predeterminated position together with tyre bead.

Fig. 4-3 is the expansion of bead support unit and the schematic diagram that positioning device laterally exits.

Fig. 5 be tire assembly drum shown in Fig. 4 side drum in drum be moved axially inward and it is middle drum inflation after carcass material uniformly rouse The schematic diagram risen.

Fig. 6 is the schematic diagram of the middle drum expansion of tire assembly drum shown in Fig. 5.

Fig. 7-1 is the schematic diagram of the capsule inflation anti-package of tire assembly drum shown in Fig. 6.

Fig. 7-2 be tire assembly drum shown in Fig. 7-1 carcass material anti-package after and the schematic diagram that exits of boosting disk

Fig. 8 is to be affixed on that tire assembly drum is outer and the carcass material of anti-package is rolled by anti-package pressure roller after capsule shown in Fig. 7 is deflated Schematic diagram.

Fig. 9 is the schematic diagram that casing ply and sidewall material are bonded under tire assembly drum state shown in Fig. 8.

Figure 10 is the schematic diagram that doubling roller rolling sidewall material and bead support unit contraction side drum move axially outward.

Figure 11-1 is the first schematic diagram that the sidewall on the pressure roller of tire assembly drum positive closure shown in Figure 10 is rolled by positive closure pressure roller.

Figure 11-2 is the second schematic diagram that the sidewall on the pressure roller of tire assembly drum positive closure shown in Figure 10 is rolled by positive closure pressure roller.

Figure 11-3 is the third schematic diagram that the sidewall on the pressure roller of tire assembly drum positive closure shown in Figure 10 is rolled by positive closure pressure roller.

Figure 12 is the schematic diagram that the aeration settling of carcass component shown in Figure 11 and tread package are located at carcass component periphery.

Figure 13 is the schematic diagram that center pressure roller rolls the compound place of tread package and carcass component.

Figure 14-1 is the first state schematic diagram that shoulder pressure roller rolls shoulder region.

Figure 14-2 is the second status diagram that shoulder pressure roller rolls shoulder region.

It is vacuumized when Figure 15-1 is the handgrip crawl fetus of set composite, in green tyre and the signal of middle drum retraction Figure.

Figure 15-2 is the schematic diagram of bead support unit retraction.

Figure 16 is the partial schematic diagram of tire assembly drum after the completion of unloading tire.

Specific embodiment

The embodiment of the present invention is described below in detail, the example of embodiment is shown in the accompanying drawings, wherein identical from beginning to end Or similar label indicates same or similar element or element with the same or similar functions.It is retouched below with reference to attached drawing The embodiment stated is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.

To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.

As shown in Fig. 1 to Figure 16, the present invention provides a kind of tyre building machine (not shown), is used for forming tire fetus, Including assembly drum 1, tread drum (not shown), set composite, assembly drum driving box (not shown), tread drum driving box (not shown) With assistant formation unit.Wherein, assembly drum driving box can drive the rotation of assembly drum 1 or mobile, and tread drum driving box can drive tire Face drum rotation or mobile, assistant formation unit can cooperate 1 shaped carcass component of assembly drum, and cooperation tread drum forms tread package 7, Set composite can receive the tread package 7 on tread drum, and with the cooperation of assembly drum 1 that tread package 7 and carcass component is compound At green tyres.Further, assembly drum driving box is equipped with drum axis 3 and screw rod (not shown), and screw rod is located in drum axis 3, at Type drum 1 is fixed on bulging axis 3.

As depicted in figs. 1 and 2, assembly drum 1 includes two symmetrically arranged side drums 10 and is located between two side drums 10 Middle drum 11, middle drum 11 radially have shrink and expansion two states.When drum 11 is in contraction state in the middle, middle drum 11 The drum radius of drum radius and side drum 10 is of substantially equal, so that the outer circumference surface of the outer circumference surface of middle drum 11 and side drum 10 can be formed One substantially complete cylindrical surface, which can be used for accepting material.When drum 11 is in expansion state in the middle, the drum of middle drum 11 Radius is greater than the drum radius of side drum 10, and the radial height difference of the two is H.Further, middle drum 11 includes axially mutually being embedded in Two and half drums 110 of cooperation, each side drum 10 can connect with half drum 110 of adjacent side and can relatively move therebetween. Side drum 10 is equipped with anti-package unit 101 and bead support unit 102 close to one end of middle drum 11.Wherein, bead support unit 102 can Radial contraction or expansion, in the present embodiment, anti-package unit 101 can be inflatable capsule.Wherein, assembly drum driving box can It controls drum axis 3 to rotate, to drive the rotation of side drum 10 and middle drum 11, the control screw rod rotation of assembly drum driving box can drive two A side drum 10 is axially towards one another or is moved away from, so as to drive the anti-package unit 101 and bead support unit 102 on side drum 10 Axial movement.

As shown in Fig. 4 to Figure 16, assistant formation unit includes the tyre bead positioning device 20 being axially movable and anti-package unit Boosting disk 21, anti-package pressure roller 22, positive closure pressure roller 23 and the doubling roller 28 of 101 cooperations, wherein doubling roller 28 is for rolling sidewall 5.Tyre bead positioning device 20 can carry, position tyre bead 4, and can move axially along assembly drum 1, so that tyre bead 4 can be drawn a circle to approve with comforter batt Position device 20 is carried to the axial designated position on assembly drum 1.Boosting disk 21 can push anti-package unit 101 (capsule of inflation) right Tyre bead 4 carries out anti-package.

Set composite includes center pressure roller 24, shoulder pressure roller 25 and handgrip 26.Center pressure roller 24 can roll green tyres Tread area is so that tread package 7 bonds substantially with carcass component.Shoulder pressure roller 25 is two symmetrically arranged idler wheels, two shoulder pressures Roller 25 can be moved up and down respectively, moves left and right, be rotated, therefore shoulder pressure roller 25 can roll shoulder zone and the sidewall of green tyres Region, so that it is guaranteed that tire component 7 and the complete composite molding of carcass component.Handgrip 26 can circumferentially catch green tyres, consequently facilitating Unload tire.

The invention discloses a kind of tire moulding methods of above-mentioned tyre building machine, include the following steps:

Step 1, middle drum 11 is in contraction state, and the distance between bulging shoulder of two of middle drum 11 is first distance B, assembly drum 1 rotation is to batch carcass material 6.

As shown in figure 3, two and half drums 110 of middle drum 11 are contraction state, assembly drum 1 is in flat drum type state, at this time at The coiled strip of carcass material 6 is completed in type drum 1.It should be noted that carcass material 6 shown in Fig. 3, can include at least from the inside to the outside Liner layer and the first casing ply.Certainly, according to the molding different needs of green tyres, carcass material can also include heel fabric And second casing ply, wherein the second casing ply can also carry out coiled strip after the completion of anti-package tyre bead process again.

Step 2, it is carried respectively there are two the movement of the tyre bead positioning device 20 of tyre bead 4, tyre bead 4 is moved to assembly drum 1 Axial designated position.

As shown in Fig. 4-1 and Fig. 4-2, tyre bead 4 is moved to bead support unit 102, carcass by tyre bead positioning device 20 The radial outer periphery of material 6.At this point, two tyre beads 4 divide carcass material 6 positioned at the first carcass material 6a of two sides and to be located in the middle the Two carcass material 6b.Further, 102 radial dilatation of bead support unit is with circumferential locked bead 4, while tyre bead positioning device 20 Tyre bead 4 is detached from far from assembly drum 1.As shown in Fig. 4-3, the radially inner side of tyre bead 4 is locked by tyre bead support unit 102, therefore Tyre bead 4 will not be mobile relative to assembly drum 1 in radial direction, so that tyre bead 4 can be positioned on assembly drum 1.Therefore, when tyre bead positions When tyre bead 4 is moved to the designated position of assembly drum 1 by device 20,102 radial dilatation of bead support unit can circumferential locked bead 4。

Step 3, inflation in middle drum 11, two and half drums 110 relatively move axially inwards, in the middle between the two of drum 11 drum shoulder Distance when being second distance A, inflation in drum 11 in stopping.

Wherein, first distance B is greater than first distance A, and drum diameter in about 2 times of difference of first distance B and second distance A To expanded height H.

In the actual production process, when middle drum 11 and side drum 10 move axially, the distance between bulging shoulder of two of middle drum 11 There are certain margins of tolerance, thus in the difference of first distance B and second distance A and 2 times between drum radial dilatation height H value There is also certain margin of tolerance, i.e. the difference of first distance B and second distance A can be slightly larger than 2 times of H values, can also be smaller In 2 times of H values, 2 times of H values can also be equal to.As shown in figure 5, since the radially inner side of two tyre beads 4 on assembly drum 1 is corresponded to Bead support unit 102 lock, so the carcass material 6 between tyre bead 4 and assembly drum 1 is also tightened, therefore be located at Between the two sides of the second carcass material 6b be equivalent to and sealed.While two and half drums 110 relatively move axially inwards, to molding Inflation in the middle drum 11 of drum 1, then the second carcass material 6b that two sides are tightened will heave a part under gas effect, stop at this time Only inflate.Enable the second carcass material 6b Uniform Tension by the inflation of centering drum 11, at the same avoid because middle drum 11 it is axial to It is interior relative movement and cause the second carcass material 6b to be adhered or be overlapped.

In the present invention, before middle 11 radial dilatation of drum, after 102 radial dilatation of bead support unit, when tyre bead positions When the position position inaccurate of device 20, the tyre bead positioning device 20 for carrying tyre bead 4 can be located at the radial outside of middle drum 11, this When in drum 11 by pneumatic actuation itself radial dilatation until abut tyre bead 4, due in tyre bead 4 be equipped with steel ring, and drive in drum 11 aerodynamic force cannot destroy tyre bead 4, therefore middle drum 11 can not just be expanded, from without the phenomenon that drum 11, having in hitting Effect protects middle drum 11.

Step 4, middle 11 radial dilatation of drum, assistant formation unit assistant formation drum 1 enter 4 anti-package of tyre bead in carcass material 6.

As shown in fig. 6, middle drum 11 rises by the height that the second carcass material 6b heaves.Due to the shape shown in Fig. 3 of assembly drum 1 Carcass material 6 is batched under state, therefore between two bulging shoulders of the practical middle drum 11 being equivalent in Fig. 3 of length of the second carcass material 6b First distance B, and two and half drums 110 make the distance between two bulging shoulders of middle drum 11 become after relatively moving axially inwards Two distance A, and drum radial dilatation height H in about 2 times of the difference between first distance B and second distance A, so rousing in the middle When 11 radial dilatation, the second carcass material 6b is covered on 11 outer surface of middle drum under expansion state just.Second carcass material 6b inflation In by the state of gas Uniform Tension when heaving, at this time in 11 radial dilatation of drum, the drum shoulder of middle drum 11 then will not be to second fetus Body material 6b generates local elongation effect, ensure that the uniformity of the second carcass material 6b, and then ensure that the material of carcass components Expect the uniformity stretched.

As shown in Fig. 7-1 to Fig. 7-2, due to middle 11 radial dilatation of drum, then the axial end face of tyre bead 4 can be resisted against middle drum At 11 drum shoulder, then tyre bead 4 in the axial direction will not be mobile relative to assembly drum 1.First carcass material 6a is bonded anti-package unit 101 The radial outside of (unaerated), and tyre bead 4 is locked by tyre bead support unit 102, therefore when the anti-package list on two side drums 10 When member 101 is inflated simultaneously, the first carcass material 6a is jacked up with heaving for anti-package unit 101.Further, 21 direction of boosting disk Middle drum 11 is mobile to squeeze two anti-package units 101, so that the anti-package unit 101 of two inflations is tightly attached to the two of middle drum 11 respectively Side (periphery of side end face and middle drum 11 including middle drum 11), so that the first carcass material 6a is rolled, is laminated on the second carcass material On 6b, and then tyre bead 4 is closely wrapped in carcass material 6.

Further, as shown in Fig. 7-2, after the completion of the anti-package process of step 4, carcass material 6 is cylindrical in shape, and is fitted tightly over On the outer circumference surface of middle drum 11, boosting disk 21 is exited, the state of the holding locked bead 4 of bead support unit 102, and the two of middle drum 11 A half drum 110 is always expansion state.The boosting disk 21 of tyre building machine of the invention can be mobile relative to assembly drum 1, and to filling The anti-package unit 101 of gas applies the thrust of an axial direction, to realize to the first carcass material 6a for being located at 101 top of anti-package unit Anti-package movement.

Step 4 further includes step 4-1, the two sides of the cylindrical carcass material 6 in 22 rolling step 3 of anti-package pressure roller, so that first Carcass material 6a is fitted closely on the second carcass material 6b, so that tyre bead 4 is tightly wrapped in carcass material 6.

Specifically, as shown in figure 8, the movement at the drum shoulder of drum 11 in of anti-package pressure roller 22, will be laminated on second fetus after anti-package The first carcass material 6a on body material 6b is further pressed.In this process, bead support unit 102 keeps the shape of locked bead 4 Two and half drums 110 of state, middle drum 11 are always expansion state.

Step 5, the second casing ply, third casing ply, sidewall 5 are further bonded on the cylindrical carcass material 6 that step 4 is completed Or further it is bonded third casing ply, sidewall 5.

Specifically, as shown in figure 9, casing ply and sidewall 5 have been bonded and have finished.Sidewall 5 is located at the two sides of carcass material 6, and It is a part of more than the edge of cylindrical carcass material 6.In this process, bead support unit 102 keeps the state of locked bead 4, in Two and half drums 110 of drum 11 are expansion state.Tyre building machine of the invention controls assembly drum 1 by assembly drum driving box and revolves Turn, thus the process for completing automatic attaching sidewall 5.

It further, as shown in Figure 10, further include step 5-1, the sidewall 5 in 28 rolling step 5 of doubling roller is less than cylinder The part of shape carcass material 6, so that sidewall 5 is fitted closely on the second carcass material 6b.

It further, as shown in Figure 10, further include step 5-2,102 radial contraction of bead support unit, to release to tire The locking of circle 4.

Step 6, two side drums 10 move away from middle drum 11 axially outward with space of stepping down out, and positive closure pressure roller 23 exists Sidewall 5 is bonded to cylindrical carcass material 6 beyond the part at 6 edge of cylindrical carcass material in the space.

As shown in Figure 11-1 to Figure 11-3, positive closure pressure roller 23 acts on the two sides of cylindrical carcass material 6, the arc of positive closure pressure roller 23 Shape portion ensures that 4 edge of sidewall can fit in completely at the arc structure of carcass material 6.Positive closure rolling after the completion of, side drum 10 with Bead support unit 102 is moved axially towards the direction close to middle drum 11 to reset, and wherein bead support unit 102 returns to tyre bead 4 underface.In this process, two and half drums 110 of middle drum 11 are always expansion state.Side drum 10 of the invention can be opposite The axial movement of half drum 110, therefore one can be formed and allow bit space.

Step 7, assembly drum driving box inflates carcass component, and the axially opposing movement of two and half drum 110 is simultaneously embedded in cooperation directly The distance between two bulging shoulders to middle drum 11 are third distance C so that the inner peripheral surface of tread package 7 and carcass component outside Periphery is bonded just, and set composite assistant formation drum 1 is compound to form fetus by tread package 7 and the rolling of carcass component.

As shown in figure 12,102 radial dilatation of bead support unit is always expansion shape with locked bead 4, two and half drums 110 State, and one end of tyre bead 4 abuts the side of half drum 110, to guarantee that tread package 7 and carcass component roll compound tense tyre bead 4 It does not move radially, axially, ensure that the quality of production of tire.

As shown in Figure 12 to Figure 13, assembly drum driving box persistently inflates carcass component, has received the compound of tread package 7 The corresponding region that device is moved to assembly drum 1 (certainly in other alternative embodiments, automatically can also will by molding 1 Carcass component is corresponding to the tread package 7 on set composite), the axially opposing movement of two and half drum 110 is simultaneously mutually embedded in, until two The distance between a tyre bead 4 meets the overdetermination offset of tire technique, i.e., the distance between two bulging shoulders of middle drum 11 are C, at this time 7 inner peripheral surface of tread package is bonded just with carcass member perimeter circumferential surface.When under driving of the assembly drum 1 in assembly drum driving box turns When dynamic, center pressure roller 24 can be rolled at tread package 7 and carcass component joint, so that 7 inner peripheral surface of tread package and carcass group Part outer circumference surface close adhesion, to form fetus blank.

Step 7 further includes step 7-1, and shoulder pressure roller 25 rolls at tire shoulder and the sidewall of aforementioned fetus, so that tread package 7 Two sides fit closely carcass component.

As shown in Figure 14-1 and Figure 14-2, when assembly drum 1 rotates, two idler wheels of shoulder pressure roller 25 are away from each other movement, from And roll the shoulder regions of fetus blank；Two idler wheels are moved down while being rotated, so that the rolling pressure perpendicular that idler wheel applies In sidewall surface, so that the two sides of tread package 7 can fit in carcass component completely to form fetus.In step 7 In process, locked bead 4, middle drum 11 are always expansion state to bead support unit 102 always, remain and fill in carcass component Gaseity.

The present invention can be automatically performed fixating shape step, compound tread package 7 and the carcass component of carcass component by step 7 Step, therefore do not need to remove carcass component and put to carrying out shaping on other setting drum, the secondary movement of tyre bead is avoided, Improve the formed precision of green tyres.

Step 8,102 radial contraction of middle drum 11 and bead support unit, tyre building machine carry out unloading tire.

As shown in Figure 15-1 and Figure 15-2, after tire base completes, assembly drum driving box is evacuated carcass component, middle drum 11 To reset, bead support unit 102 is shunk to reset, so that tyre bead 4 is not locked radial contraction.Due to the handgrip of set composite Circumferentially fixed fetus, therefore after fetus is detached from assembly drum 1, assembly drum 1 is mobile or set composite is moved to and unloads tire station, mechanical Hand grabs fetus, and is placed to tyre blank storage region.

Step 8 further includes step 8-1, and two middle drums 110 are mutually moved away from, and assembly drum 1 reverts to flat drum to coiled strip shape State.

As shown in figure 16, after the completion of unloading tire, half drum 110 of side drum 10 and middle drum 11 is axial be away from each other it is mobile to reset, at Type drum 1 restores flat drum type state, thus the production green tyres that tyre building machine can continue.

The beneficial effects of the present invention are: when middle 11 flat drum type state of drum keep drum shoulder distance be first distance B, anti-package it Before, two and half drums relatively move axially inwards, while inflation in middle drum, in the middle the distance between two bulging shoulders of drum be second When distance A, stop for being inflated in middle drum 11, so that drum is radial in about 2 times of difference between first distance B and the 2nd A Expanded height H, later in the radial dilatation again of drum 11.Since the length for the second carcass material 6b being maintained on middle drum 11 is actually suitable First distance B between two bulging shoulders of Yu Yuzhong drum, and two and half drums make two of middle drum after relatively moving axially inwards The distance between drum shoulder becomes second distance A, and drum is radial in about 2 times of the difference between first distance B and second distance A Expanded height H, therefore the length B for being equivalent to the second carcass material 6b is approximately equal to the radial dilatation height of drum 11 in second distance A and 2 times Spend the sum of H.At this point, middle 11 radial dilatation of drum would not be to the second carcass material.And in the prior art, before anti-package, middle drum The distance between two bulging shoulders it is constant always, therefore be bound to generate stretching action to the second carcass material when middle drum expansion, and The position mainly stretched be located at middle drum two sides drum shoulder at, and method of the invention it is middle drum expansion before first by the second carcass material The length needed for middle drum rises, and the uniformity in order to guarantee the stretching of carcass material are reserved, during length in reserve, by filling Pneumatically make Uniform Tension carcass material, while also avoiding carcass material and being adhered or be superimposed.

In the description of specific embodiment, the property discussed term " in the present embodiment ", " in one embodiment ", " specific reality Apply in example " etc. descriptions mean combine the embodiment description specific features or feature be contained at least one embodiment of the present invention In.And identical embodiment in a specific embodiment, is not necessarily referring to the schematic representation of above-mentioned term.Moreover, The specific features or point of description can be combined in any suitable manner in any one or more embodiments.

Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention Protection scope within.