CN100436114C - Shaping method and drum for mfg. tyre for vehicle wheels - Google Patents
Shaping method and drum for mfg. tyre for vehicle wheels Download PDFInfo
- Publication number
- CN100436114C CN100436114C CNB02815049XA CN02815049A CN100436114C CN 100436114 C CN100436114 C CN 100436114C CN B02815049X A CNB02815049X A CN B02815049XA CN 02815049 A CN02815049 A CN 02815049A CN 100436114 C CN100436114 C CN 100436114C
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- China
- Prior art keywords
- rotary drum
- carcass sleeve
- tire
- moulding
- axial
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/36—Expansion of tyres in a flat form, i.e. expansion to a toroidal shape independently of their building-up process, e.g. of tyres built by the flat-tyres method or by jointly covering two bead-rings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/24—Drums
- B29D30/244—Drums for manufacturing substantially cylindrical tyre components with cores or beads, e.g. carcasses
- B29D30/245—Drums for the single stage building process, i.e. the building-up of the cylindrical carcass and the toroidal expansion of it are realised on the same drum
Abstract
A cylindrical casing sleeve (80), comprising at least one casing ply having terminal flaps turned around corresponding annular reinforcing structures (84), is formed on a building drum (4). An outer sleeve comprising a tread applied to the exterior of a belt structure is formed on an auxiliary drum (8). The casing sleeve (80) and the outer sleeve are transferred in succession to a shaping drum (2) on which two sidewalls (81) have previously been positioned. The sidewalls (81) are held by their inner edges next to the annular reinforcing structures (84) used to hold the casing sleeve (80) on to the shaping drum (2). The casing sleeve (80) is shaped into a toroidal shape in order to join it to the outer sleeve. The sidewalls (81) are then turned over and applied to the lateral surfaces of the casing sleeve (80).
Description
Technical field
The present invention relates to a kind of method that is used to wheel to make tire, this method comprises following step: form a carcass sleeve, this carcass sleeve is provided with a pair of tyre bead that be separated from each other out in the axial direction, annular and strengthens structural member, and having at least one casing ply, the flap sheet of its opposite end is respectively twining described two annular tyre beads one of to be strengthened in the structural members; Carcass sleeve is sent on the moulding rotary drum; Described carcass sleeve is carried out moulding, make it become the anchor ring body structure; Paste on the side of the carcass sleeve after moulding in this way and add a pair of tyre sidewall, each side all strengthens structural member from one of them annular tyre bead and extends radially outward.According to above-mentioned method, the process of making a wheel tyre also comprises step: form an outer sleeve body, it comprises a belt structure spare and a tyre surface, and tyre surface wherein sticks on the radial outside position on the belt structure spare; And described outer sleeve body is sent to a centering position around the carcass sleeve that is arranged on the moulding rotary drum, overcoat can be shown consideration on the carcass sleeve that be added to as this processing and forming result thus.Can finish the operation relevant with making outer sleeve body according to any known mode, for purpose of the present invention, these operations there is no any specific importance, thereby will this be explained in detail hereinafter.
The invention still further relates to a kind of manufacturing rotary drum, more definite, the present invention relates to a kind of moulding rotary drum of the tire that is used to make wheels, this rotary drum is provided with two coaxial half way around drums, aspect rotating, these two half way around drums are one, and the two halves rotary drum has constituted described rotary drum, can move with respect to second half rotary drum is two-way in the axial direction one of at least in them.Each described half way around drum all comprises a suitable expandable part, and it turns down a tyre sidewall, thereby tyre sidewall can be added on the corresponding side surface of carcass sleeve structural member by subsides; But also be provided with the clamping device of radial dilatation on the described rotary drum, it is used for the tyre bead of carcass sleeve is remained on the moulding rotary drum, and is provided with centralising device, and it is used for carcass sleeve medially is positioned in the axial direction the equatorial plane of moulding rotary drum.
Background technology
A kind ofly in this area, obtain widely used tire manufacturing method and be commonly called " two-step technology ".More specifically, in this tire manufacturing process, at first be that one or more layers casing ply is applied on the one first cylindrical shape rotary drum, thereby form a columnar body that this rotary drum is commonly called " manufacturing rotary drum " or " first step rotary drum ".The annular that is positioned at the tyre bead place strengthens structural member is installed on the flap sheet of one or more layers casing ply opposite end, and then, the flap sheet of casing ply held annular structural part, just can be wrapped in a kind of ring strengthening structural member in this way.
Then, the carcass sleeve that makes in this manner is sent on one second rotary drum, this rotary drum is also referred to as " moulding rotary drum " or " the second step rotary drum ", and on this rotary drum, being used to form band tyre sidewall, elastomeric material may be arranged in advance.
Then, carcass sleeve is shaped to the anchor ring body structure, and with itself and one before be arranged on a pair of in locational tread outer sleeve body be joined together, centering position wherein is for carcass sleeve, the tread cover comprises a belt structure spare and a tyre surface, and tyre surface is laminated on the belt structure spare diametrically.
After the carcass sleeve structural member has been performed moulding, suitable expandable part turns down the described band of elastomer material on the moulding rotary drum, thereby they are applied on the side of carcass sleeve structural member, and expandable part wherein for example is made of leverage or inflatable chamber.
Method and apparatus based on above-mentioned principle has for example just been described in patent document FR-A-2093180 and US-3990931.
This method causes an important aspect of pass and is such fact: all operations of carrying out in second step all carries out on a carcass sleeve, and this moment, carcass sleeve accurately was not centered in its installation site as yet on the moulding rotary drum; In other words, the equatorial plane of carcass sleeve may not overlap with the equatorial plane of described rotary drum, thereby, but it is only to utilize by the fastening force that suitable clamping device applied of radial dilatation to realize fixing on the latter, clamping device is positioned at enhancing corresponding on the carcass sleeve and partly locates, hereinafter, as the common appellation that adopts, this is strengthened part abbreviate " tyre bead " as.
Above-mentioned confining force may be not enough to prevent that tyre bead from producing displacement in a small amount with respect to the clamping device of correspondence, be not enough to perhaps to prevent that casing ply from opening-especially tyre bead being carried out the step of anchor ring moulding from the state loose winding that is twining annular tyre bead and strengthen structural member, thereby, because install incorrect and/or carcass sleeve is subjected to displacement on rotary drum subsequently or casing ply at tyre bead place coil stripping, distortion may appear in the operations for forming to carcass sleeve, therefore, Wan Gong tire can have irregular geometry at last, thereby, must be classified as waste product because it in use is underbalance.
The disclosed technical scheme of patent document EP-997263 also belongs to two-step technology, it has introduced a kind of method and apparatus that is used to make tire, according to its disclosed content, carcass sleeve is sent on the rotary drum step finally, in the process that carcass sleeve is fixed on the moulding rotary drum, guarantee that carcass sleeve realizes axial alignment.
But this problem is not solved completely, and along with a kind of appearance of novel tire, this problem becomes even more important, for example just discloses this novel tire fully in No. 5634993 United States Patent (USP).This tire is characterised in that: it joins on the wheel rim with tyre bead supporting surface its tyre bead to, in other words, the bottom of tyre bead is faced laterally in the axial direction, perhaps also can say like this: make it be inclined to the form of taper seat, and the summit of this taper seat on the wheel rim pivot center is presented axially in the outside of tire, wherein, preferably, two tyre beads have mutually different assembling diameter and size.
This special tyre bead geometry has increased carcass sleeve and the incorrect risk of centering occurred on the moulding rotary drum.
Because this tire need be provided with on the axial inner surface of tyre bead and one strengthen element, exempts to rub mutually with the metal covering that wheel rim is installed with the protection tyre bead, so that above-mentioned problem becomes is more complicated.
This enhancing element preferably is mounted on the tire in second manufacturing step, but the ad-hoc location at its place must be fixed, to avoid using apical grafting the centralising device of the axial inner surface of tyre bead, for example in the file EP-997263 that above quotes, such centralising device has just been described.
Summary of the invention
The applicant has been found that: if utilize some device carcass sleeve to be installed on certain position, then can obtain quite significant advantage, especially aspect the reliability that improves institute's manufacturing process that adopts and equipment and the quality aspect of raising final products, wherein, on described position, carcass sleeve axially and is directly making progress with respect to described rotary drum centering, described device has been by having consolidated this centering position on the inner surface that is bearing in described carcass sleeve, thereby prevented that structurally carcass sleeve from any displacement taking place from the precalculated position.
According to the present invention, the applicant has visualized a kind of tire manufacturing method, and made corresponding moulding rotary drum, adopt the present invention, can not only be in all operations process of second step, guaranteeing carcass sleeve on rotary drum axially and radial alignment make tire when having stability, and can engage with the described centering operation that is strengthened, strengthen element with one and be assembled on the axial inner surface of tyre bead.
Thereby, the purpose of this invention is to provide a kind of tire manufacturing method and corresponding device, the performed all working step of this device is all carried out on carcass sleeve basically, and carcass sleeve then is being held axial alignment and radial alignment on a moulding rotary drum.
According to another object of the present invention, described method and apparatus has also been realized such operation: strengthen the tyre bead element with one and be assembled on the axial inner surface of described tyre bead.
In a first aspect, the present invention relates to a kind of method of the tire that is used to make wheels, it comprises step:
A) carcass sleeve is navigated on the moulding rotary drum; B) described carcass sleeve is fixed on the described moulding rotary drum; C) described carcass sleeve is carried out the anchor ring forming operation; D) a pair of tyre sidewall is applied to the side soil of the described carcass sleeve after the moulding; And E) overcoat consideration is added on the radially-outer surface of described carcass sleeve, wherein, in a certain at least step process in execution in step C, D and E, utilize axial force that described carcass sleeve is remained on the position of a basic centering on described moulding rotary drum, the action direction of axial force wherein points to the axial inner surface of described carcass sleeve.
In carrying out described steps A and B in one of at least the process, preferably, utilize radial load that described carcass sleeve is remained on the position of a basic centering on described moulding rotary drum, the action direction of radial load wherein points to the inner radial surface of described carcass sleeve, and performed operation is respectively to be positioned at described carcass sleeve on the moulding rotary drum and to fix in above-mentioned steps A and B.
Preferably, above-mentioned method comprises that one is positioned at step F on the described moulding rotary drum with described tyre sidewall), in this step, described tyre sidewall is oriented to like this: their axial inside edge is positioned at axial inner side with respect to the tyre bead of described carcass sleeve.
Advantageously, method involved in the present invention comprises another one step G, this step is folded to described axial inside edge on the axial inner surface of described tyre bead, described step G be after the described step C that described carcass sleeve is carried out the anchor ring moulding or before carry out.
Preferably, the described step G that described axial inside edge is folded on the axial inner surface of described tyre bead finishes by at least one inflatable chamber is carried out inflation.
Be alternatively, utilize the turnover device to carry out above-mentioned step, the turnover device is designed to pushing the inner radial surface of described axial inside edge.
Advantageously, described step F occurs in described carcass sleeve is positioned at described steps A on the described rotary drum) before or afterwards.
In the method according to the invention, preferably, the described step that described tyre sidewall is navigated on the described moulding rotary drum also comprises step: before being wound into a tyre sidewall band on the described rotary drum, an end of described tyre sidewall band is fixed on the described moulding drum surface.
On the other hand, the present invention relates to a kind of moulding rotary drum of the tire that is used to make wheels, this rotary drum has axially relatively the carcass sleeve of tyre bead from one and starts with and make tire, described rotary drum comprises: a turning cylinder, it links to each other to fetch with two coaxial half way arounds drum and carries out work, aspect rotating, the two halves rotary drum is an one, and wherein one of at least can be with respect to another bidirectional-movement in the axial direction, each described half way around drum all comprises a bracing or strutting arrangement, is used for a tyre sidewall is navigated to described carcass sleeve and it is applied to carcass sleeve; One clamping device, it is used for one of them described tyre bead is fixed to described rotary drum; An and centering device, it is used for one of them described tyre bead is carried out the centering location on described rotary drum, wherein, can be by the equatorial plane that centralising device limited that is installed on the described half way around drum with respect to moving in the axial direction by the equatorial plane that clamping device limited that is installed on the described half way around drum.
Preferably, described clamping device also has one first guiding piece and one second guiding piece, these two guiding pieces are that a motor element has defined a fixed path, simultaneously, described centralising device has a mechanism, when this mechanism worked, it can force described motor element to move along described fixed route, and the axial alignment position of described carcass sleeve can be changed with respect to the equatorial plane of described rotary drum.
Preferably, described moulding rotary drum also comprises the turnover device that is used for the axial inside edge of described tyre sidewall is assembled into correspondence table face portion on the described carcass sleeve.
At last, above-mentioned rotary drum preferably includes: be used in the process that described tyre sidewall is navigated on the described rotary drum tyre sidewall being fixed to fixture on the rotary drum.
From detailed description hereinafter, can be well understood to other feature and advantage of the present invention more to doing according to preferred (but non-exclusionism) embodiment of the forming method of of the present invention, the tire that is used to make wheels and rotary drum.
Description of drawings
Hereinafter be described in detail with reference to the accompanying drawings, the effect of these accompanying drawings only is in order to be described, thereby does not have determinate meaning, in the accompanying drawings:
Schematic part sectioned view has been represented according to moulding rotary drum of the present invention, that be used to make tire among Fig. 1, among the figure, rotary drum is in the state of ceasing, and it is just preparing to receive a carcass sleeve for preparing elsewhere, and the tyre sidewall of tire has been arranged to place, inflatable position corresponding on the described rotary drum;
Fig. 2 has represented the situation of rotary drum shown in Figure 1 when the body in the first step is carried out assembling, and among the figure, body has been arranged to a centering position on the rotary drum;
Fig. 3 has represented the situation of rotary drum shown in Figure 1 when having some elements, these elements be used for carcass sleeve centering to the operating position and roof pressure the inner surface of carcass sleeve;
State when Fig. 4 has represented that rotary drum shown in Figure 3 is in a job step, in this step, after the clamping device of rotary drum radially expanded, it engaged at its tyre bead place with carcass sleeve;
Moulding rotary drum when Fig. 5 has represented to be in a certain job step, in this step, in conjunction with the inflation operations to carcass sleeve, after the two halves rotary drum that constitutes rotary drum moved in the axial direction in opposite directions, carcass sleeve was rendered as the shape of anchor ring body;
Moulding rotary drum when Fig. 6 has represented to be in a certain job step, in this step, tyre sidewall is applied on the carcass sleeve of overmolding, is positioned on the lateral parts in the axial outside;
Moulding rotary drum when Fig. 7 has represented to be in a certain job step in this step, strengthens element and is added to after the moulding by subsides and is positioned on the lateral parts of axial inboard on the carcass sleeve;
Fig. 8 has represented to return to the state of ceasing so that make the moulding rotary drum that unvulcanized tire can be when above-mentioned rotary drum takes off;
Moulding rotary drum when Fig. 9 has represented to be in a certain job step, this state is identical with state shown in Figure 7, but performed operation is carried out according to a kind of alternative embodiment;
Moulding rotary drum when Figure 10 has represented to be in a certain operating procedure, state is identical with Fig. 7 among the figure, but performed operation is before carcass sleeve is carried out the anchor ring moulding;
Moulding rotary drum when Figure 11 has represented to be in a certain operating procedure, state is identical with Fig. 9 among the figure, but performed operation is before carcass sleeve is carried out the anchor ring moulding;
Axonometric drawing among Figure 12 has been represented a kind of preferred implementation of relevant clamping device mechanism;
Axonometric drawing among Figure 13 has been represented a kind of preferred implementation of relevant centralising device mechanism;
Figure 14 is vertical part sectioned view of a simplification, has represented a kind of preferred implementation of relevant fixture mechanism; And
Schematic diagram among Figure 15 has been represented the layout of a tire manufacturing equipment, comprises a pair of according to moulding rotary drum of the present invention in this equipment.
The specific embodiment
Fig. 1 is a partial sectional view longitudinally, the rotary drum 2 of having represented the tire that is used to make wheels, more definite, this rotary drum is " second step " rotary drum, in other words, this rotary drum is to be used for the cylindrical shape carcass sleeve that makes is in addition carried out annular processing and forming, and carcass sleeve is to make in another different job step, and this step is commonly called first step.
On described turning cylinder 20 end relative with drive motor units support component and operating means are installed, these elements and device have constituted a half way around drum of described rotary drum jointly, hereinafter will be described these elements and device.
On turning cylinder 20, assembling a body 21 coaxially, it can move in flexible mode between the two ends of described turning cylinder, in other words, can move with respect to described end is two-way in the axial direction, but aspect rotating, itself and described turning cylinder 20 but are one.
On described body 21, some devices are installed, and these devices become as a whole with described body, they are identical with those devices that are installed on the turning cylinder 20, and mirror image symmetry basically between the two, thereby will no longer be described individually these devices, and use be installed in turning cylinder 20 on the identical number designation of those devices mark these devices; The device that body is corresponding with it has constituted second half of described rotary drum jointly.
Hereinafter come rotary drum 2 is described with reference to a kind of specific technical scheme, people need such technical scheme to make the tire that its tyre bead has different assembling diameters, but this description does not have determinate meaning; Those skilled in the art are readily understood that such technology: how the size of the bulging mechanical organ of one of them half way around is changed so that this rotary drum can be processed the tire that its two tyre bead has identical assembling diameter.
As shown in Figure 1, basically, the moulding rotary drum comprises two coaxial half way around drums that align, and the two halves rotary drum can move in the axial direction mutually, but then be one aspect rotation, on each half way around drum, all be shaped on: be used for tubular support device 23 that tyre sidewall is positioned; Be used for tyre sidewall is assembled into inflatable device 30 on the carcass sleeve; The clamping device 40 that can expand diametrically, it is used to utilize the tyre bead of a carcass sleeve and engages with carcass sleeve on this rotary drum; And centralising device 50, it is used for described carcass sleeve is positioned, and holds it in a pair of on the described rotary drum 2 on the position.
Preferably, rotary drum 2 also comprises turnover device 60, and it is used for axial inside edge with described tyre sidewall and is assembled into correspondence table face portion on the carcass sleeve.
Preferably, rotary drum 2 also comprises fixture 70 (seeing Figure 14), and it is used in the process that described tyre sidewall is navigated on the rotary drum tyre sidewall being fixed to rotary drum.
At the projection end of described turning cylinder 20-in other words, promptly on that end opposite with drive motor units 1, the bracing or strutting arrangement 23 of one tubulose is installed, it is coaxial with described turning cylinder, and become an integral body with turning cylinder, it comprises several different sections 23a, 23b and 23c, these sections are connected with each other in the axial direction, but preferably has different diameters, on outside vertically direction, their diameter diminishes gradually, the radially-outer surface of these sections can be easily with described to be radially expanded device 30 related, inflatable device 30 comprises at least one inflatable chamber 34, it is along the circumferential direction engaging around tubular support device 23, then extends between both ends in the axial direction, on both ends, chamber 34 turn back from one's body, thereby formed a stayed surface for an element 81 of the tire that will make.Described element comprises at least one band of being made by elastomeric material 82, and it is used to make the tyre sidewall of tire.
Preferably, be provided with at least two inflatable chambers 34 and 35, they stagger in the axial direction mutually, one second inflatable chamber 35 is set, it is presented axially in the outside with respect to chamber 34, then be positioned at its inside line diametrically, in such a manner, it is being hidden by described chamber 34 at least in part.
Mode is such as is well known, chamber 34 and 35 has suitable crimping 34a, 34b, 35a and 35b, utilization is the suitable concave on different parts 23a, 23b, the 23c in tubular support device 23, and these crimpings can be fixed to described chamber 34,35 on the radially-outer surface of tubular support device 23.The shape of tubular support device 23 outer surfaces preferably designs in this manner so that chamber 34 be in can be positioned in when ceasing state one with described turning cylinder 20 coaxial and be preferably on the columniform surface.By injecting the hydraulic fluid of pressurization, can make each inflatable chamber 34 and 35 be deformed to swelling state shown in Figure 6 from the state of ceasing shown in Figure 1, under the state that ceases shown in Figure 1, the shape of chamber 34 is essentially cylindric, and be crushed and amplexiform on the outer surface of tubular support device 23, and at swelling state, chamber is rendered as the shape of anchor ring body basically.When chamber 34,35 is carried out inflation, be positioned at above-mentioned elastomeric material strips 82 on each described chamber and just be extruded on the side of carcass sleeve 80 (see figure 6)s after the described moulding, thereby form the tyre sidewall 81 of tire.
In addition, hereinafter, each in these two groups of devices all is called as a shoulder of rotary drum; As mentioned above, described two shoulders are one each other aspect rotating, and in the axial direction, the two can carry out relative motion between a minimum spacing position and a maximum axial extended position, wherein, when rotary drum is closed, the spacing minimum between two shoulders, and when rotary drum is drawn back, be described maximum axial extended position.What should also be pointed out that is: the shoulder of rotary drum described herein and turning cylinder 20 are one, but it can also move in the axial direction with respect to described turning cylinder.
Be provided with the clamping device 40 that can expand diametrically on turning cylinder 20, its shoulder with respect to correspondence is positioned at axial inside line, and the effect of this device is that the tyre bead 83 by means of carcass sleeve 80 remains on (see figure 4) on the rotary drum 2 with carcass sleeve.
At present, the purposes of this type of device is known, and those skilled in the art can design a kind of alternate mechanism of equivalence without difficulty, and this mechanism can be more suitable in designer's requirement and purpose.According to the preferred implementation that a kind of defending party to the application selects for use, described device 40 comprises a plurality of radially pin rods 41 (seeing Figure 12), and these pin rods distribute around turning cylinder 20, and leaves circumferential interval between them.The radially inner side part of described pin rod is integral with one first guiding piece 42, guiding piece 42 is along the longitudinal extension of turning cylinder 20, and extend to one away from described pin rod 41, the less axial medial end of diameter vertically from one with pin rod 41 axial outboard end contacted, that diameter is bigger on the radial outside surface of this guiding piece.In other words, as along as described in the radial outside surface of guiding piece 42 shift to the outside of rotary drum 2 in the axial direction, then will move to a major diameter part from a small diameter portion; In other words-will radially outwards move.In Figure 12, this guiding piece 42 is represented as a flange that circumferential size is limited, it is given prominence to from described pin rod 41, but preferably: part shown in Figure 12 is the part on the ring body, this ring body is coaxial with described turning cylinder 20, and be integral with it, and the shape of this ring body radially-outer surface is designed to shown in the longitudinal sectional view among Fig. 1 and the part that dotted line is painted among Figure 12 is such.
As along as described in guiding piece 42 move the outside in the axial direction to rotary drum 2, a first is arranged, this first has significant gradient, this part and a second portion link, second portion is straight basically, as hereinafter will introducing in more detail, second portion can produce centralising device 50 with respect to the equatorial plane that is limited by described clamping device 40 and moves axially.
Be provided with one second guiding piece 43 a position that is positioned at described first guiding piece, 42 radial outsides, itself and described pin rod 41 are one, and the radially inner side surface of second guiding piece is arranged essentially parallel to the radially-outer surface of described first guiding piece 42.Like this, these two groups of guiding pieces 42,43 are that a moving element that will hereinafter be described has formed a fixed route.
The radial outside of described pin rod 41 partly is provided with a lining 44, it can be with respect to the longitudinal sliding motion of pin rod, but aspect rotation, but be fixed with it, one slide block 45 is installed on this lining, itself and described lining are combined into one, and extend on longitudinally along the axis of rotary drum 2, and face laterally in the axial direction.
Design according to the shape of certain mode described slide block 45 radial outside surfaces, thereby can form a space 45a, it can hold a ring body 46a who is made by elastomeric material, and this ring body is sleeved on around the geometrical axis of moulding rotary drum 2 and along on a plurality of slide blocks that circumferentially distribute.Preferably, this ring body 46a has constituted the axial inboard crimping of a flexible partition 46, and this barrier film has two crimpings (46a and 46b), this barrier film make its axially outside crimping 46b be fixed in the corresponding shoulder on the rotary drum.One of them is positioned at that another person then is positioned on the body 21 on the turning cylinder 20 two barrier film 46-, but they utilize the seal of a packing fluid to completely cut off the axial inside part of rotary drum, so that as seeing: can carry out inflation to carcass sleeve 80, thereby finish anchor ring moulding to it.
Above-mentioned slide block 45 is bearing on the block 47 of a correspondence, block 47 is plugged between a described slide block 45 and the operating means 48, operating means 48 can be actuated by at least one hydrodynamics driver, and its can make slide block 45 a rest position put and an operating position between move radially, on the rest position therein, its tyre bead 83 from carcass sleeve radially bounces back, thereby can allow as shown in Figure 2 carcass sleeve 80 is assembled on the moulding rotary drum vertically, or as shown in Figure 8, the tire of having finished manufacturing process is taken off from rotary drum; And in the operating position, to shown in Figure 7, slide block then ejection the tyre bead 83 of above-mentioned carcass sleeve as Fig. 4.
Preferably, described hydrodynamics driver comprises a piston 49 that is connected with said apparatus 48, device 48 has a conical surface coaxial with rotary drum 2, and this conical surface faces laterally in the axial direction, and the summit of conical surface on the rotary drum pivot center is positioned at an axial inside line; Owing to be provided with such annexation, the slide block 45 outwards motion diametrically that piston 49 can cause block 47 and be attached thereto towards vertically moving of rotary drum inside in the axial direction.Can utilize elastic ring 46a to make slide block 45 inwardly do to reset motion diametrically, in the radial dilatation process of slide block, elastic ring 46a also expands.Substituting or replenishing as said apparatus, other device (not shown) also can be set, thereby can help this reseting movement or produce this reseting movement, these other device for example is arranged on the dovetail joint between the block 47 corresponding conical surfaces and the device 48, or acts directly on the spring on block and/or the described device.
Shown in ring body 48 can be in a cylinder barrel 26 slide vertically, cylinder barrel 26 utilizes spline to be fixed on the turning cylinder 20, and its axial outboard end is sealed; A kind of working fluid is injected between the axial outer surface of blind end and piston 49 in the described cylinder barrel 26, thereby makes described piston generation axially-movable.Can adopt suitable sealing ring to prevent that the fluid in the cylinder barrel 26 from letting out along the radially-outer surface of piston 49.
According to the present invention, turnover device 60 can be set on rotary drum 2, it is used for axial inside edge with described tyre sidewall 81 and is assembled into correspondence table face portion on the carcass sleeve 80.
At present, the purposes of this type of device is known, and those skilled in the art can design a kind of alternate mechanism of equivalence without difficulty, and this mechanism can be more suitable in designer's requirement and purpose.In a kind of preferred implementation (seeing Figure 12), these devices 60 (equally also only one of them is described) comprise a flange 61, and itself and lining 44 are one, and extend inside to rotary drum vertically from described lining.
On described flange 61, utilize a pivot center perpendicular to the rotary drum longitudinal profile, hinged lever 62, its axial outboard end seat is pressed on the radially inner side end of described lining 44; Preferably the axial medial extremity of lever is provided with a double wedge 63, and it extends laterally diametrically.
Be understood that: radially inward direction acts on active force on double wedge 63 or the lever 61 corresponding ends and will make lever rotate around it axis to rotate, thereby raises its axial outboard end on radially outer direction.
In addition, according to the present invention, rotary drum 2 comprises also and is used for described carcass sleeve 80 is positioned at centralising device 50 (seeing Figure 13) on the described rotary drum that this device also is used for carcass sleeve is remained on a pair of position.At present, the purposes of this type of device is known, and those skilled in the art can design a kind of alternate mechanism of equivalence without difficulty, and this mechanism may be more suitable in designer's requirement and purpose.In a preferred embodiment, described device 50 comprises a ring body 51 coaxial with rotary drum 2, it can slide on described turning cylinder 20 vertically, a plurality of cylinder barrels 52 are installed on the radially-outer surface of this ring body, these cylinder barrels extend to radial outside, and along circumferentially distribution, and leave between them at interval.Only expressed one of them described cylinder barrel 52 among Figure 13, it is installed on the limited circumferential part on the described ring body 51, for simplification ring body is expressed as the vertical bar shape among the figure.
In described cylinder barrel 52, be provided with a piston that can slide diametrically 53, have an element 54 (being centering piece) on the radial outside end of this piston, it is arranged to parallel with the axis of rotary drum 2, and longitudinally stretches out.
One end of the radially inner side end of described piston 53 and a pin rod 55 links into an integrated entity, and pin rod 55 is perpendicular to a sagittal plane that comprises piston 53 axis and rotary drum pivot center, and slip in the longitudinal fluting 56 can making on cylinder barrel 52 sidewalls.At an end place opposite with above-mentioned end, have a roller 57 on this pin rod 55, it can freely rotate with respect to the axis of described pin rod 55.The diameter of described roller 57 is substantially equal to the size in a hole, and this size is the radial dimension of the above-mentioned fixed route that is formed by described first guiding piece 42 and second guiding piece 43.Especially: the installation site of ring body 51 on turning cylinder 20 has certain corner orientation with respect to clamping device 40, make by this way centralising device 50 each cylinder barrel 52 can with the staggered location of the pin rod 41 of clamping device 40, and roller 57 is positioned on the said fixing path.Has an operating means-but be preferably at least two devices (they are arranged in circumferential equal intervals) above-mentioned ring body 51 is moved in the axial direction at least.Preferably, described operating means comprises the hydrodynamics driver of one cylinder-piston-type, and cylinder barrel 58 is one with turning cylinder 20, and piston 59 then is an one with ring body 51.
The operation principle of this mechanism is obviously: ring body 51 will make piston 53 move in the axial direction to moving of drum head, and force roller 57 to move along the lip-deep fixed route of guided rings 43 radial outsides, like this, just make described piston 53 and coupled centering piece 54 produce radially outer motion simultaneously.
Should be noted that: when piston 59 work, the motion of roller 57 in described fixed route will cause centralising device 50 to produce an axially-movable, thereby the equatorial plane that centralising device is limited moves axially with respect to the equatorial plane generation that is limited by the clamping device 40 that is installed on the moulding rotary drum 2 described half way around drums, wherein, for described fixed route, described above such, because the shape of first guiding piece 42 is designed, institute is so that it comprises a straight line part.
The device that is provided with conventional device (not shown)-be preferably elastic force type changes the length of piston 53, thereby makes described centralising device 50 can be used to diameter all carcass sleeve in a predetermined value scope.For example, a kind of simple and favourable embodiment of described elastic device comprises a compression spring, and it is installed between the radially inner side part and radial outside part of described piston 53, and described piston 53 then preferably is made into the form of stretching.
Should be noted that: the class of establishment (on two shoulders of rotary drum driver 58 and 50 being set) that designs for centralising device 50 makes the location of centering piece 54 be independent of the axial location of slide block 45; Thereby, so just can change the axial alignment position of carcass sleeve, thereby bring the advantage that hereinafter will describe with respect to the rotary drum equatorial plane, wherein, the equatorial plane of rotary drum is equidistant with relative in the axial direction slide block 45.
Preferably, rotary drum also comprises fixture 70, is used for synthetic rubber band 82 being navigated to the process of the shoulder of described rotary drum 2, band being fixed to the surface of rotary drum.Described fixture 70 preferably includes at least one clamping element 71, and it can be with respect to moulding rotary drum 2 motion on radial and axial, and partly all is provided with a clamping element in each of rotary drum.More specifically, clamping element 71 (seeing Figure 14) can a rest position put and an operating position between move, on rest position, the edge separation of itself and band 82 is opened, and be positioned on the moulding rotary drum 2 according to certain mode, thereby can form a shoulder that is positioned at axial inboard with respect to the axial outer ledge of the crimping ring 46a of chamber 46, and on the operating position, its axial inside edge with respect to described crimping ring 46a has formed a shoulder that is positioned at the axial outside, and act on the edge of corresponding band 82, on the outer surface that is fixed to the moulding rotary drum, band is made with elastomeric material, and it transports from a tyre sidewall feed unit 3 (seeing Figure 15).On time and space, the motion of this clamping element 71 all is independent of the motion of other clamping device 40 and centralising device 50.As for its related mechanism, preferably identical with the mechanism of centralising device 50, perhaps as alternative, also can be identical with the mechanism of clamping device 40, thereby will no longer do the description of repetition herein to it, only need simply be pointed out that: different with centralising device 50, clamping element 71 is when being operated, must radially move to the inside, so that described band 82 is fixed, rather than radially outwards motion.What should also be pointed out that is: rotary drum only has a pair of mutual in the axial direction opposed clamping element 71, and centralising device 50 is along the circumferential direction to be distributed on the whole perimeter length of rotary drum.Under any circumstance, the purposes of this clamping element 71 all is known, and those skilled in the art can design a kind of alternate mechanism of equivalence without difficulty, and this mechanism can be more suitable in designer's requirement and purpose.
Following design also is obviously: in order to simplify the structure of rotary drum, be arranged in the rotary drum outside and do not replace described clamping element 71 as the equivalent device of rotary drum building block thereby can use.
Above-mentioned rotary drum 2 is used to finish certain operations in the two-step method making fabrication technique, and these operations can realize the completion of carcass, and in a first step of described technology, carcass is prepared as the form of cylindrical sleeve 80.
Generally speaking, the structure that is used as the tire of wheel is known, thereby need not in this article to be explained in detail.Tire mainly comprises a carcass sleeve 80 (see figure 2)s, come it is strengthened with one deck casingply at least, casing ply has relative in the axial direction ring week flap sheet, flap sheet is wound into snare, strengthen structural member and be wrapped in corresponding annular, these structural members are embedded in the tire of finally making in the zone that is called as " tyre bead " 83, and tyre bead is arranged in the ring week inward flange of tire.As shown in Figure 2, each annular strengthens structural member and all comprises: week, the inextensible annular insert 84 of at least one ring, and this insert is usually by " steel bead wire "; And an elastomer filler 85, the position that it sticked is positioned at the radial outside of steel bead wire.
At execution in step E) process in, carcass sleeve 80 couples together at a radial outside position and an outer sleeve body, outer sleeve body has a belt structure spare, this structural member generally includes one or more layers band bundle bar.Subsides have added a tread on the radial outside position of belt structure spare, and it is used to form the contact surface between tire and the track.
On the side of carcass structure 80, laid the corresponding tyre sidewall made from elastomeric material 81, wherein, the side of carcass is from a tread part of radially extending to carcass 80 of a plurality of tyre beads 83.Those need be provided with at the axial inside line of tyre bead 83 in the tire that strengthens element-the sort of novel tire for example mentioned above in, described enhancing element preferably is made of a layer of elastomer material 86, this material layer has suitable rheological behavior, in its edge facing to tyre bead 83, the reinforce that also can have fiber, fabric or metal, these reinforces are assembled on the elastomer material band of tyre sidewall 81 in advance.In all the other descriptions of this paper, in order to simplify, will use " tyre sidewall " this speech continually, although and refer to that specially tyre sidewall-tyre sidewall itself comprises above-mentioned enhancement layer.
In the carcass of having finished the anchor ring moulding, each tyre sidewall all has usually: one is positioned at the terminal edge of radially inner side, and it extends to the inboard from the outside vertically, and strengthens structural member 84 around the annular of correspondence; An and terminal edge that is positioned at radial outside, it is laminated on the corresponding lateral edges of tread from the side, thereby form a kind of tire construction system, this system is commonly called " tyre sidewall flange formula " (sidewalls over), perhaps this radial outside edge also can be put between the lateral edges of carcass structure spare and tread, and this tire construction system is called as " tyre sidewall flanging formula " (sidewalls under).
When initial, at first can prepare this carcass structure spare according to the common any way of those skilled in the art, this structural member is made into the form of cylindrical sleeve, it is commonly called " carcass sleeve " 80, as shown in Figure 2, this carcass sleeve comprises that the annular that is arranged in tyre bead strengthens structural member, its diametrically face towards the geometrical axis of carcass sleeve.
Particularly, having expressed a kind of its two tyre bead in the accompanying drawing and had the different carcass sleeve that diameters are installed, only is in order to be described in more detail, not have determinate meaning but adopt this embodiment, and reason is that the present invention is applicable to the tire of any kind.
At this moment, the carcass sleeve that makes by this way just can be sent to according on the moulding rotary drum 2 of the present invention.Should be noted that: also can be used to carcass sleeve is installed on the off-centered position of the equatorial plane with respect to rotary drum according to rotary drum of the present invention herein; In the description of this paper, in these cases, be equally in order to simplify, to continue to use " centering position " speech.
Before carcass sleeve 80 is sent on the described rotary drum 2,, then tyre sidewall to be navigated on the moulding rotary drum if in the operating process of first step, tyre sidewall is not assembled on the carcass sleeve as yet.Even after carcass sleeve 80 has been fixed on the clamping device 40 of moulding rotary drum, all can carry out above-mentioned operation, but in the case, but a certain tyre sidewall can not have been arranged, the interior terminal edge of this tyre sidewall will turn over the annular of walking around correspondence and strengthen structural member, and this moment, tyre sidewall can only be routed on the position that is positioned at the axial outside of above-mentioned annular enhancing structural member.Preferably, feed the bar that at least one usefulness elastomeric material makes by each half way around drum to the moulding rotary drum and bring the above-mentioned work of finishing, band wherein is used to form one of them tyre sidewall.More specifically, as shown in Figure 15, band for example is to be pulled from a continuous feeding device for band reel or other type, and is directed executing the zone to the subsides of correspondence, and should be in tangent position with respect to the moulding rotary drum in the zone, can realize above-mentioned design according to known mode.
Be used for step F that tyre sidewall is positioned for execution) workflow mainly be to need the moulding rotary drum to do the corner motion, up to make clamping element 71 can end near elastomeric material strips till, and band was directed element and navigated to and stick on the zone this moment.In this step, clamping element 71 axially and the footpath upwards move, till being in the operating position, in this operating position, clamping element be positioned at the moulding rotary drum on the corresponding end that sticks the elastomeric material strips of location engage.Then, the moulding rotary drum rotate so that can reel complete one the circle elastomeric material strips, this band is pulled out from above-mentioned feeding device 3.Synchronous with described operating winding, the suitable cutting member that utilization is connected with described guiding piece cuts off into certain size with the band of elastomeric material, form a joint so that the opposite end of each the band section that is cut out can be in contact with one another on the moulding rotary drum, this joint is preferably the joint of plagiohedral.Can form final joint with artificial method or by means of proper device between both ends by the staff, device wherein for example is known roller devices (not shown).After having finished coiling work, clamping element 71 is reset to its rest position, and as shown in Figure 1, each tyre sidewall all is molded to the form of cylinder ring basically, and its profile exterior feature extends with respect to the moulding rotary drum in the axial direction.Preferably, the axial inside end edge of each tyre sidewall also is arranged to be laminated at least in part on the clamping device 40 crimping ring 46a, and clamping device 40 is set on the moulding rotary drum, is used for engaging with carcass sleeve 80.
By manufacturing rotary drum 4 (seeing Figure 15) is bounced back diametrically, carcass sleeve 80 can be taken off from making rotary drum 4, utilize conveyer 5 (seeing Figure 15) to send it to then according to (see figure 2) on the moulding rotary drum of the present invention, for conveyer 5 wherein, because it is known, and irrelevant with the object of the invention, so it is not done detailed displaying in the drawings.At execution in step A) process in, described carcass sleeve 80 is on arriving moulding rotary drum 2 time, it is positioned or is assembled on the rotary drum 2.
Then, at least be in the step B that carcass sleeve is fixed on the rotary drum, starting centralising device 50 (see figure 2)s, these centralising devices are by upwards outwards moving with the footpath in the axial direction, gradually on the location of tyre bead 83 is born responsibility the inner surface of carcass sleeve 80, thereby make above-mentioned carcass sleeve be in certain position, this position is a centering with respect to the pivot center of rotary drum diametrically, and with respect to a datum plane also is centering in the axial direction, and datum plane wherein normally is made of the equatorial plane of rotary drum 2.
But should be noted that: the equatorial plane of the described equatorial plane of moulding rotary drum 2-promptly limited by clamping device 40 can be different with the equatorial plane that is limited by above-mentioned centralising device 50, in other words, can be different from the equatorial plane of carcass sleeve 80.As mentioned above, this possibility that changes the carcass sleeve position along turning cylinder 20 is based on such fact: be independent of each half way around drum, ring body 51 is variable in certain limit with respect to the position of pin rod 41.
After on carcass sleeve being set to respect to the centering position of rotary drum, start driver so that the slide block 45 of clamping device 40 is expanded (see figure 4) diametrically, thereby they are on the corresponding operating position, so just can utilize annular to strengthen structural member carcass sleeve 80 is maintained.
In this step, as described shown in the accompanying drawing, utilize the centralising device 50 that still is in the operating position, can advantageously tyre sidewall 81 be fixed on the radially inner side surface of carcass sleeve tyre bead 83, thereby the end of having guaranteed tyre sidewall has correct axial location with respect to carcass sleeve, and can guarantee in the subsequent step of this technology, the position location of tyre sidewall has stability.
Then, by step C) carcass sleeve 80 is carried out the anchor ring moulding.The work of this step be approaching mutually in the axial direction by two half way arounds drum that makes moulding rotary drum 2, a kind of working fluid be injected in the carcass sleeve 80 finish simultaneously, just can make carcass sleeve expand into the structure of toroid diametrically in this way.In this step, utilize the effect that continues to remain on the centralising device 50 on the operating position, force carcass sleeve on rotary drum, to keep the centering state.The active force roof pressure of these centralising devices annular and is strengthened structural member 84, and this can prevent that any loose winding phenomenon from appearring in the casingply that is holding the tyre bead steel wire.
Then, at step D) in, make with the shoulder device 30 relevant, that can be radially expanded of moulding rotary drum 2 and start working, thereby each tyre sidewall 81 is applied on the corresponding side surface of carcass sleeve 80.In the optimal technical scheme of describing when this paper is initial, these devices 30 mainly comprise a pair of inflatable chamber 34 and 35, and the band 82 of elastomeric material is twining around these chambers, and these bands are used to form tyre sidewall 81.
Preferably, the job order of inflatable chamber 34,35 is such: first chamber that is positioned at axial inside line is at first by inflation, thereby tyre sidewall 81 is raised with respect to the outer surface of moulding rotary drum 2, and with described tyre sidewall upwards turnover to the side of carcass sleeve 80.Subsequently, make second chamber 35 carry out work, thereby finish the work that sticks, and they are pressed on the carcass sleeve tyre sidewall.
Then, with chamber 34 and 35 pressure releases, make them return to separately the state that ceases; Then, carry out roll extrusion operation, so that the tyre sidewall band is pressed onto on the side of carcass sleeve.
In a kind of known mode, in the forming operation process or any subsequently the time engrave, after having sticked tyre sidewall or before, also carcass sleeve 80 and the outer sleeve body that has belt structure spare and tread are joined together.After such work, also to carry out roll extrusion, described outer sleeve body is pressed onto on the carcass sleeve after the moulding.
In these steps, 50 pairs of carcass sleeve of centralising device provide compulsory axial alignment, thereby prevent that carcass sleeve from producing any possible displacement from its centering position, if not, owing to produced active force in the roll extrusion operation, may be subjected to displacement.
If necessary, also can carry out a step G afterwards, this step is folded to the axial inside edge of tyre sidewall 81 on the axial inner surface of tyre bead 83 at the radially inner side position of carcass sleeve 80.This operation is finished by centralising device 50 is reset to rest position: in this step, in the process of radially inwardly moving, each end of centralising device all radially upcountry roof pressure in the turnover device 60 axial medial extremity corresponding on the lever, thereby its axial outboard end is pivoted, thereby radially outwards motion.This motion will be moved the end of inflatable chamber to radial outside, make that the inside edge of each sidewall 81 is sticked on the surface of carcass sleeve.
At this moment, the clamping device 40 of moulding rotary drum 2 also is reset to rest position, so that the tire of manufacturing can be removed.
As shown in Figure 9, as an alternative, if described turnover device 60 is not set on the rotary drum 2, then can be by the axial inside end part inflation of inflatable chamber 34 being got up to finish above-mentioned turnover operation, described terminal part branch extends the inside to described rotary drum 2 vertically, till the axial medial extremity of crossing crimping ring 46a, and this part is provided with the equalizer valve of himself, and this remainder that makes described axial inside end part can be independent of chamber carries out work individually.
In another kind of alternative remodeling, the step that the axial inside part of tyre sidewall is folded on the axial inner surface of tyre bead before being carried out the anchor ring moulding, carcass sleeve is carried out according to the inventive method; In the case, be to utilize above-mentioned turnover device 60 to operate equally, the course of work of turnover device is also as indicated above.
In this case, as the alternative of above-mentioned technical process, can with the turnover device 60 as in the process that adds the belt outer sleeve body in subsides, be used to keep tire to overlap the element of 80 centering states.
As alternative design (seeing Figure 11), under the situation that above-mentioned turnover device 60 is not set, can by with the axial inside end part of inflatable chamber 34 individually inflation get up to realize turnover.
In this alternative remodeling embodiment, before carcass sleeve is carried out the anchor ring moulding, be removed so that the axial inside part of tyre sidewall is carried out the centering position that the centralising device that turns down is reset to carcass sleeve.
As alternative, that is narrated as mentioned is such, can also use to remain on the locational turnover device 60 of centering.
Can advantageously be applied in the complete set of equipments that utilizes two-step method manufacturing tire according to moulding rotary drum 2 of the present invention.Specifically, Figure 15 has represented a kind of tire manufacturing equipment, and it has: a first step is made rotary drum 4; One is used for the device 5 that the carcass sleeve 80 to first step transmits; One is used to make the auxiliary barrate 8 of outer sleeve body, and outer sleeve body wherein comprises belt structure spare and tread; One is used to transmit the device 7 of described outer sleeve body; And at least one is according to moulding rotary drum 2 of the present invention, it is being supported by an electric motor units 1, and outwards stretches out from this electric motor units, and electric motor units 1 is installed on the rotating turntable 6, this turntable is used to change the relative positioning of described moulding rotary drum 2, preferably, it can rotate 180 ° around a vertical axis, rotates between a position 2a and a position 2b, on the 2a of position, carcass sleeve 80 can be received, and on the 2b of position, then the outer sleeve body that has belt and tread can be received.
Preferably, stretch out and supporting a pair of moulding rotary drum 2 from the relative both sides of described electric motor units 1, they lay respectively at described position 2a and 2b.
Advantageously, adopt two moulding rotary drums to replace single moulding rotary drum to shorten the work period, thereby can correspondingly improve the output of equipment.
On the coaxial position 2a of moulding rotary drum and rotary drum 4, also be provided with one and be used for carrying tyre sidewall band and other required half-finished feeding devices 3 to described moulding rotary drum 2.
The present invention can bring significant effect.
Owing to adopted the present invention, can make carcass sleeve at the beginning of the moulding rotary drum is realized definitely accurately Even two tyre beads of beginning centering-carcass sleeve have different assembling diameters, and the assembling diameter does not wait Tyre bead will cause the location of the carcass sleeve equatorial plane to be not orthogonal to the pivot center of rotary drum.
Centralising device 50 can be made the independence of axially-movable so that carcass with respect to clamping device 40 The casing ply of cover 80 can irrespectively be opened into cylindrical configuration with the width of described carcass sleeve, like this Just make same moulding rotary drum can be used to make the tire of different brackets.
In addition, in making the whole process of tire, can both guarantee right on rotary drum of carcass sleeve In-axial alignment especially, and the many operations in the manufacture process all need to apply to carcass sleeve Sizable active force-especially in the axial direction.
In addition, realized with respect to tyre bead with the axial inside edge of tyre sidewall be folded to one axially in The operation of side, or make in a word this operation be able to suitable simplification, and the worker of prior art In the skill, utilizing existing manufacturing rotary drum is to be difficult to finish such operation; Also guaranteed simultaneously The edge of tyre sidewall has correct radial location on the carcass sleeve.
What should also be pointed out that is: can change centralising device 50 with respect to the clamping device 40 of correspondence The design of axial path has brought the advantage of at least other two aspects. At first, it has simplified tyre sidewall Feeding system, and be convenient to change the grade of tire, reason is that such design makes the tyre sidewall energy At any time can both be arranged on the same relative axial position at rotary drum, and not be subjected to The impact of one step carcass sleeve width, thus just need not adjust feed unit for adapting to this width 3 (seeing Figure 15).
Secondly, according to rotary drum of the present invention, can realize that clamping device 40 is with respect to centralising device 50 axially-movable is not owing to exist any between described clamping device and centralising device Interfere, so even such motion make tyre sidewall can be arranged on the rotary drum-carcass sleeve by Be installed on the rotary drum and carried out after the location with respect to rotary drum: specifically, this motion makes Get the tyre sidewall band and can be wound onto on the described clamping device 40, thereby it can be fixed on subsequently Between the corresponding tyre bead of clamping device and carcass sleeve, like this, with respect to described tyre bead, described The axial inside end edge of band has been fixed on the position that is positioned at axial inboard.
Claims (10)
1. the method for the tire that is used to make wheels, it comprises step:
A) carcass sleeve (80) is navigated on the moulding rotary drum (2);
B) described carcass sleeve (80) is fixed on the described moulding rotary drum (2);
C) described carcass sleeve (80) is carried out the anchor ring forming operation;
D) a pair of tyre sidewall (81) is applied on the side of the described carcass sleeve (80) after the moulding;
E) overcoat consideration is added on the radially-outer surface of described carcass sleeve (80),
Wherein, in a certain at least step process in execution in step C, D and E, utilize axial force that described carcass sleeve (80) is being remained on one basically on the position of centering on the described moulding rotary drum (2), the action direction of axial force wherein points to the axial inner surface of described carcass sleeve; Wherein, in carrying out described steps A and B in one of at least the process, utilize radial load that described carcass sleeve (80) is being remained on one basically on the position of centering on the described moulding rotary drum (2), the action direction of radial load wherein points to the inner radial surface of described carcass sleeve (80), performed operation is respectively described carcass sleeve (80) to be positioned at moulding rotary drum (2) go up and fix in steps A and B
Described method comprises: F) described tyre sidewall (81) is positioned on the described moulding rotary drum (2), wherein each described tyre sidewall (81) is oriented to like this: their axial inside edge is positioned at axial inner side with respect to the tyre bead (83) of described carcass sleeve (80).
2. the method for according to claim 1, the tire that is used to make wheels, it also comprises a step G, this step is folded to described axial inside edge on the axial inner surface of described tyre bead (83).
3. the method for according to claim 2, the tire that is used to make wheels, it is characterized in that: described step G carried out before the described step C that described carcass sleeve (80) is carried out the anchor ring moulding.
4. the method for according to claim 2, the tire that is used to make wheels, it is characterized in that: described step G carries out after the described step C that described carcass sleeve (80) is carried out the anchor ring moulding.
5. the method for according to claim 2, the tire that is used to make wheels, it is characterized in that: described step G finishes by at least one inflatable chamber (34) is carried out inflation.
6. the method for according to claim 2, the tire that is used to make wheels, it is characterized in that: described step G utilizes turnover device (60) to finish, and the inner radial surface that the turnover device is designed to paste described axial inside edge works.
7. the method for according to claim 6, the tire that is used to make wheels is characterized in that: described turnover device (60) is used as and pastes in the process that adds described outer sleeve body, keeps the element of described carcass sleeve (80) centering.
8. the method for according to claim 1, the tire that is used to make wheels is characterized in that: carried out described step F before the described steps A that described carcass sleeve (80) is positioned on the rotary drum (2).
9. the method for according to claim 1, the tire that is used to make wheels is characterized in that: carry out described step F after the described steps A that described carcass sleeve (80) is positioned on the rotary drum (2).
10. the method for according to claim 1, the tire that is used to make wheels, it is characterized in that: described step F also comprises step: a tyre sidewall (81) band (82) is being wound into before described rotary drum (2) goes up, an end of described band (82) is fixed on described moulding rotary drum (2) surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP01830509.4 | 2001-07-30 | ||
| EP01830509 | 2001-07-30 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101537540A Division CN101143493B (en) | 2001-07-30 | 2002-07-23 | Shaping method and drum for manufacturing a tyre for vehicle wheels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1537048A CN1537048A (en) | 2004-10-13 |
| CN100436114C true CN100436114C (en) | 2008-11-26 |
Family
ID=27589063
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101537540A Expired - Lifetime CN101143493B (en) | 2001-07-30 | 2002-07-23 | Shaping method and drum for manufacturing a tyre for vehicle wheels |
| CNB02815049XA Expired - Lifetime CN100436114C (en) | 2001-07-30 | 2002-07-23 | Shaping method and drum for mfg. tyre for vehicle wheels |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101537540A Expired - Lifetime CN101143493B (en) | 2001-07-30 | 2002-07-23 | Shaping method and drum for manufacturing a tyre for vehicle wheels |
Country Status (4)
| Country | Link |
|---|---|
| CN (2) | CN101143493B (en) |
| AR (2) | AR034935A1 (en) |
| BR (1) | BR0205807B1 (en) |
| RU (1) | RU2312018C2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2242642B1 (en) * | 2007-12-21 | 2012-02-08 | Pirelli Tyre S.P.A. | Process and plant for building tyres for vehicle wheels |
| ITMI20110721A1 (en) * | 2011-04-29 | 2012-10-30 | Pirelli | PROCESS AND EQUIPMENT FOR PACKING TIRES FOR VEHICLE WHEELS |
| JP5566504B1 (en) * | 2013-06-05 | 2014-08-06 | 株式会社ブリヂストン | Carcass band molding apparatus and carcass band molding method |
| CN111016241A (en) * | 2019-12-30 | 2020-04-17 | 山东丰源轮胎制造股份有限公司 | Adjustable cushion block for BT drum of tire one-step forming machine |
| CN113715380B (en) * | 2021-09-10 | 2023-02-07 | 刘军 | Turnover machine head, turnover structure and turnover forming machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4470867A (en) * | 1982-03-30 | 1984-09-11 | Societa' Pneumatici Pirelli Societa Per Azioni | Apparatus for manufacturing pneumatic tires |
| EP0997263B1 (en) * | 1998-10-30 | 2003-08-27 | Bridgestone Corporation | Manufacturing method and apparatus for pneumatic tyres |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57208233A (en) * | 1981-06-18 | 1982-12-21 | Mitsubishi Heavy Ind Ltd | Method and apparatus for manufacturing radial tire |
-
2002
- 2002-07-23 CN CN2007101537540A patent/CN101143493B/en not_active Expired - Lifetime
- 2002-07-23 BR BRPI0205807-3A patent/BR0205807B1/en not_active IP Right Cessation
- 2002-07-23 RU RU2004105957/12A patent/RU2312018C2/en active
- 2002-07-23 CN CNB02815049XA patent/CN100436114C/en not_active Expired - Lifetime
- 2002-07-30 AR ARP020102865 patent/AR034935A1/en active IP Right Grant
-
2007
- 2007-09-11 AR ARP070104000 patent/AR062732A2/en active IP Right Grant
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4470867A (en) * | 1982-03-30 | 1984-09-11 | Societa' Pneumatici Pirelli Societa Per Azioni | Apparatus for manufacturing pneumatic tires |
| EP0997263B1 (en) * | 1998-10-30 | 2003-08-27 | Bridgestone Corporation | Manufacturing method and apparatus for pneumatic tyres |
Also Published As
| Publication number | Publication date |
|---|---|
| BR0205807B1 (en) | 2011-05-17 |
| AR062732A2 (en) | 2008-11-26 |
| BR0205807A (en) | 2003-07-29 |
| AR034935A1 (en) | 2004-03-24 |
| RU2004105957A (en) | 2005-01-27 |
| CN101143493B (en) | 2011-12-14 |
| CN1537048A (en) | 2004-10-13 |
| RU2312018C2 (en) | 2007-12-10 |
| CN101143493A (en) | 2008-03-19 |
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