US3547733A - Radially collapsible and axially retractable building drum - Google Patents

Radially collapsible and axially retractable building drum Download PDF

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US3547733A
US3547733A US710530A US3547733DA US3547733A US 3547733 A US3547733 A US 3547733A US 710530 A US710530 A US 710530A US 3547733D A US3547733D A US 3547733DA US 3547733 A US3547733 A US 3547733A
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segments
drum
end sections
radially
middle section
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Jean Leblond
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Uniroyal SA
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Uniroyal SA
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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

Definitions

  • This invention relates to a building drum that is useful as a support for any material or product which requires changes to be made in the axial or longitudinal dimension of the drum at certain stages during the fabrication of the product.
  • a cylindrical carcass having one or more plies interconnecting spaced bead cores is intially formed, then the bead cores are moved toward one another while the central portion of the carcass is expanded to a predetermined diameter to change the cylindrical carcass to toroidal form, and then one or more circumferential breaker plies, sidewalls and a tread are added to the expanded portion of the carcass.
  • the drum employed in the conventional single-stage building operation usually comprises movable metallic end plates interconnected by an inflatable, cylindrical rubber diaphragm. Since the rubber diaphragm is deformable, cylindrical carcasses built on such drums tend to lack uniformity of diameter, the diameter varying due to such things as stretching of the rubber diaphragm, changes of the tension in the plies being wound on the drum, initial pressure in the drum, and the like. This results in a high scrappage rate for such carcasses and for tires made therefrom.
  • cylindrical carcasses having the desired uniformity of diameter can be built on the rigid, circumferentially continuous drums employed in the first of the two stages of building.
  • carcasses must be handled and stored between the first and second stages of building and then must be remounted on the second stage building drum. This not only leads to extra expense and effort in such handling and storing, but involves lack of uniformity in mounting the carcasses on the second stage drum. This again leads to a high rate of scrappage.
  • the primary objective of the present invention is to obviate the foregoing disadvantages by providing an improved building drum.
  • Another objective of this invention is to provide an improved building drum capable of making products having a high degree of uniformity.
  • a further object of this invention is to provide an improved tire building drum suitable for single-stage tire building operations.
  • Yet another object of this invention is to provide an improved tire building drum which, in one condition of operation, presents a circumferentially continuous, rigid, cylindrical work surface upon which cylindrical tire carcasses may be built and which, in another condition of operation, allows for collapsing of a central section of the drum and for a relative movement of the end sections of the drum toward one another into telescopic relationship with the collapsed central section. of the drum.
  • a still further object of this invention is to provide an improved tire building drum as in the preceding paragraph, which drum has yet another condition of operation in which the two end sections thereof collapse radially to facilitate removal of a completed tire carcass from the drum.
  • a building drum comprising a cylindrical body having a plurality of juxtaposed, coaxial cylindrical sections, including a middle section and two end sections, which sections form a rigid, substantially continuous, cylindrical outer surface, the drum in cluding means within the cylindrical body for radially collapsing said middle section and for moving said end sections relatively toward one another without changing their diameter.
  • FIGS. la, lb, 10, and 1d are diagrammatic sectional elevational views of a building drum in accordance with this invention, FIG. 1a being a diagrammatic longitudinal sectional elevational view of the drum in its axially and radially extended position, FIG. 1b being an enlarged sectional view taken along either of the lines A--A or B-B of FIG. 1a, and FIGS. 1c and 1d being sectional views enlarged in different amounts, taken along the line.
  • FIG. 2 is a detailed longitudinal sectional elevational view of the drum in its initial condition of operation, taken along the line XY of FIG. 1d, which line represents two radial planes of the drums displayed by FIGS. 3a and 3b are detailed transverse sectional elevational views of the drum, with parts omitted for clarity, taken along the lines G-G and H-H, respectively, of FIG. 2;
  • FIG. 5 is a schematic diagram showing one form of an electrical control system that may be used to control the various movements of the middle and end sections of the drum.
  • the building drum of the present invention in its initial condition of operation, comprises a hollow cylindrical body made of an appropriate material such as a metal.
  • This cylindrical body is divided into a plurality of juxtaposed sections including a middle section I and end sections II and III, the various sections being symmetrical to one another with respect to the median plane ZZ and having at their outer ends shoulders E and Ea.
  • each of the end sections II and III is comprised of a plurality of small segments 23 and a plurality of large segments 24, which large and small segments alternate circumferentially of the end sections, the arrangement being such in the initial operating condition of the drum that a circumferentially continuous, rigid cylindrical surface is formed on each of the end sections II and III.
  • a similar arrangement is employed in the middle section I of the drum.
  • Section I comprises a plurality of large segments 25 and a plurality of small segments 26, which large and small segments alternate circumferentially of the middle section I to form, in the initial condition of operation of the drum, a circumferentially continuous, rigid cylindrical surface.
  • the large segments 24 of the end sections differ in size and shape from the large segments 25 of the middle section.
  • the small segments 23 of the end sections differ in size and shape from the small segments 26 of the middle section.
  • the outer lateral surfaces of the small segments (23, 26) and the inner lateral surfaces of the large segments (24, 25) are complementally formed in such a way that the outer lateral faces of the small segments can slide on the inner lateral faces of the large segments during expansion and contraction of the various sections, as shown more clearly in FIG. 1d.
  • the outer longitudinal end surfaces of segments 25 and 26 and the inner longitudinal end surfaces of segments 23 and 24 and 23a and 24a, which longitudinally abut one another, are also complementally formed to slide with respect to one another during portions of the movement of the drum between its first and second conditions of operation.
  • the small segments and large segments of the dilferent drum sections I through III abut each other in such a way as to provide the building drum with a circumferentially and longitudinally continuous cylindrical surface having a predetermined fixed diameter.
  • the end shoulders E and Ea also are so formed as to provide annular, continuous surfaces.
  • the various sections I, II, and III of the building drum are supported upon and rotate with a shaft S.
  • the shaft S is provided with sleeves 1 and 2 which are splined to the shaft and are axially movable therealong.
  • the small segments 26 (FIGS. 2 and 3a) of the middle section of the drum are each connected to sleeve 1 by means of three arms or links, comprising the pair of links 11 and the single link 13, and are each connected to sleeve 2 by means of a pair of arms or links 12.
  • the links 11 through 13 connected to the small segments 26 are longer than the links 14 through 16 connected to the large segments 25. Also, the distance between the points 36 and 37 at which the ends of links 11 and 12 are pivotally connected to the segments 26 is larger than the corresponding distance between the points 38 and 39 at which the ends of the links 14 and 16 are pivotally connected to the segments 25. Similarly, the distance between the points 33 and 34 at which the ends of the links 14 and 16 are connected to the sleeves 1 and 2, respectively, is shorter than the distance between the points 30 and 31 at which the ends of the links 11 and 12 are connected to the sleeves 1 and 2, respectively.
  • any relative axial movement of the sleeves 1 and 2 to the left and right, respectively, as viewed in FIG. 2 will cause the segments 26 to move radially inwardly at a greater rate of speed and to a greater extent than is the case with segments 25, as will appear in greater detail hereinafter.
  • Small segment 23 is provided with a pair of spaced, inwardly directed slides 28 which are fixed thereto and are slidably movable in corresponding guides e formed in housing 3.
  • the radially outer ends of slides 28 support a shaft or pin 40 therebetween, and the pin 40 in turn supports a pair of arms or links 21, each of which is pivotally connected at one of its ends to the pin 40.
  • the other end of each of links 21 is connected to the outer end of a common arm or link 20 by means of one or the other of a pair of shafts or pins 41.
  • the inner end of link 20 is pivotally connected to the housing 3' by means of a shaft or pin 43.
  • a plurality of pairs of links 17 is provided.
  • the pairs of links 17 are each connected at one of their ends to the pins 43 carried by the links 20 associated with the small segments 23 of end section II.
  • the other ends of the pairs of links 17 are connected to corresponding shafts or pins 50 (FIG. 3a) carried by the links 15.
  • a plurality of pairs of links 17a is provided to axially move the end section III while the middle section I is collapsing.
  • the pairs of links 17a are each connected at one of their ends to pins 43a carried by the links 20a associated with the small segments 23a of end section III.
  • the other ends of the pairs of links 17a are connected to corresponding shafts or pins 50a (FIG. 3a) carried by the links 14.
  • each of the large segments 24 of end section II is also supported on the sleeve 3 surrounding shaft S and that the segments 24 are aligned radially with corresponding housings 3 fixed to sleeve 3, as described in connection with the small segments 23.
  • each large segment 24 is linked to its corresponding housing 3" by a linkage and guide arrangement which provides for radial movement of the segment relative to the housing.
  • the linkage and guide arrangement for each large segment 24 is the same and the following description of one such arrangement will suflice for all.
  • Large segment 24 is provided with a pair of spaced inwardly directed slides 28', each of which is fixed thereto and is slidably movable in a respective guide e formed in housing 3".
  • the radially outer ends of slides 28 support a shaft or pin 45 therebetween, and the pin 45 in turn supports a pair of arms or links 22, each of which is pivotally connected at one of its ends to the pin 45.
  • the other end of each of links 22 is connected to the outer end of a common arm or link 29 by means of one or the other of a pair of shafts or pins 46.
  • the inner end of link 29 is pivotally connected to the housing 3" by means of a shaft or pin 48.
  • An arm or link 19' interconnects the link 29 with the sleeve 4.
  • One end of link 19 is pivotally connected to a shaft or pin 47 carried by link 29 and the other end of link 19 is pivotally connected to a shaft or pin 49 carried by the sleeve 4 (FIG. 2).
  • the building drum In the initial condition of operation of the building drum, in which condition the middle and end sections I through III of the drum form a substantially continuous, rigid cylindrical surface, the building drum is ready for the first phase of building a product. In the present example, it is in condition to receive the various structural elements which go into the fabrication of the basic cylindrical carcass of a radial ply tire. At this time, one or more radial plies are wound about the drum, and then head cores are fastened to the plies at the margins indicated at E and Ba.
  • the second phase of building a radial ply tire requires the shaping of the basic cylindrical carcass into a toroidal form so as to facilitate the application thereto of breaker and tread elements which will transform it into the final carcass.
  • This shaping is obtained by radially collapsing the middle section I and axially retracting the end sections II and III which support the cylindrical carcass, putting the drum into the second condition of operation shown in FIG. 4b, and by simultaneously inflating the carcass with compressed air to expand its central portion.
  • the axial retraction of the end sections of the drum is obtained by causing the middle section thereof to collapse, concurrently moving the two end sections thereof symmetrically closer to the median plane of the drum.
  • annular edges of the cup-shaped end bells can seal against the bead areas of the carcass to prevent escape of the air introduced into the drum, thereby to cause such compressed air to inflate the carcass on the drum during the movement of the end sections 2 and 3 toward each other.
  • the sleeves 1 and 2 are next caused to slide with respect to one another and to shaft S, the sleeve 1 moving to the left as viewed in FIG. 2 and the sleeve 2 moving to the right as viewed in FIG. 2.
  • the group of small segments 26 of the middle section I begin to move radially inward toward the axis of the drum, in a direction perpendicular to the axis, the segments 26 being maintained parallel to the axis during this movement due to the presence of links 13.
  • the aforesaid movements of sleeves 1 and 2 cause the group of large segments 25 of the middle section I to also move radially inward toward the axis of the drum, in a direction perpendicular to the axis of the drum, the segments being maintained parallel to the axis due to the presence of links 16.
  • the movements of the seg ments 26 and the segments 25 toward the axis of the drum occur at different speeds and in different amounts, the small segments 26 moving inwardly at a higher rate of speed and further than do the large segments 25 in arriving at the final collapsed position of the segments, as illustrated in FIG. 1a..
  • the differences in the amount of inward movement and in the speed of inward movement of segments 25 and 26 is in a predetermined amount and stems (1) from the fact that the links 11, 12, and 13 (FIG.
  • segments 26 are greater in length than the corresponding links 14, 15, and 16 of segments 25, (2) from the fact that the pivots and 31 of links 11 and 12, respectively, are spaced farther apart at the start of movement towards the second condition of operation of the drum than are the pivots 33 and 34 of links 14 and 16, respectively, and (3) from the fact that the pivots 36 and 37 of links 11 and 12, respectively, are spaced farther apart than are the pivots 38 and 39 of links 14 and 16, respectively.
  • segments 25 and 26 of the middle section I collapse radially inwardly to a greater extent that do segments 23 and 24 of the end sections 11 and III. This is provided for in order to prevent binding between the segments of section I and the segments of sections II and III, the various segments being in axial telescopic relationship with one another at certain times during the building of a tire carcass.
  • segments 23 and 24 This causes the segments 23 and 24 to move radially inward, the slides 28 and 28 and guides e and e serving to insure that such segments move in a radial direction only. Similar actions occur concurrently at the right end of the drum and, thus segments 23a and 2411 move radially inward at the same time as do segments 23 and 24.
  • the ratio of the length of crank arm link 20 to the length of connecting rod link 21 is greater than the ratio of the length of crank arm link 29 to the length of connecting rod link 22. Accordingly, the amount of radially inward movement of the small segments 23 is greater and occurs at a higher rate of speed than the amount and speed of radially inward movement of the larger segments 24. Similar considerations apply in the case of end segments 23a and 24a.
  • the sleeves 1 and 2 are axially moved as necessary to change the drum from its initial condition of operation to its second condition of operation by means of a reversible electric motor M.
  • the motor M drives a lead screw LS by means of an assembly including a torque limiter La and first and second gear wheels Rd and Rd
  • Lead screw LS is provided at one of its ends with a left-hand screw thread and at the other of its ends with a right-hand screw thread, and threaded followers or nuts E and E are provided to cooperate with respective ones of the two sets of threads on the lead screw.
  • an electrically controlled valve which is provided with solenoids EV1 and EV2, is employed to control the flow of compressed air from a source HP, to the chambers C, Ca, D, and Da, and to atmosphere.
  • solenoid EV2 When solenoid EV2 is energized and solenoid EV1 is de-energized, the electrically controlled valve takes the position shown in FIG. 4b, allowing high pressure air to flow from the source HP through the valve from right to left, and into chambers Ca and C of the drum. At the same time, the chambers D and Da are connected to atmosphere by means of the valve.
  • solenoid EV1 When solenoid EV1 is energized and solenoid EV2 is de-energized, the valve takes the position shown in FIG. 40.
  • FIG. 5 there has been illustrated an electrical control system which may be utilized to control the operation of the various components of the building drum.
  • a suitable control voltage of, for example, 120 volts AC is brought to the control circuits of FIG. 5 by means of the conductors 50 and 51
  • the building drum may be caused to shift from its initial condition of operation to its second condition of operation by depressing a first foot switch (not shown) whose contacts PS1 close in line L1 of the FIG. 5 control circuits.
  • the closing of contacts PS1 in line L1 causes control relay AV (line L1) to become energized, closing its normally open contacts AV in line L2 and opening its normally closed contacts AV in line L3.
  • the closing of contacts AV in line L2 provides an alternate source of energization to control relay AV in line L1 so that the foot switch PS1 may be released, opening contacts PS1 in line L1, without causing de-energization of relay AV.
  • the energization of relay AV in line L1 also causes three of its normally open contacts (not shown) in an energization circuit to motor M (FIG. 4a) to close, energizing the motor with, for example, three-phase 440 AC voltage. This causes the motor to drive in a first or forward direction such that the threaded followers E and E (FIG. 4a) begin to approach each other.
  • the initial movement of follower E de-actuates limit switch PC31 and causes contacts FC31 in line L3 (FIG. 5) to close without further effect.
  • the drum shifts to its third condition of operation at this time, de-actuating limit switches FC32 and PC3211, the contacts of which in line L3 open without further effect.
  • de-actuating limit switches FC32 and PC3211 the contacts of which in line L3 open without further effect.
  • its contacts PS2 in line L5 open, de-energizing solenoid EV1 (line L5) without further effect, and its contacts PS2 in line L6 close without further effect, it being understood that the valve controlled by solenoids EV1 and EV2 thereafter remains in the condition shown in FIG. 4c until solenoid EV2 subsequently becomes energized to shift it back to the position shown in FIG. 4b.
  • a third foot switch (not shown) is depressed.
  • contacts PS3 in line L4 close without further effect
  • contacts PS3 in line L5 open without further effect
  • contacts PS3 in line L6 close, causing energization of solenoid EV2 in line L6.
  • the valve it controls shifts from the position shown in FIG. 40 to the position shown in FIG. 41), thereby causing the chambers D and Da to be exhausted to atmosphere while the chambers C and Ca are pressurized by compressed air.
  • relay AR Upon energization of relay AR (line L3), its contacts AR in line L1 open without further effect and its contacts AR in line L3 close, providing an alternate source of energization to relay AR which bypasses contacts PS3 in line L4.
  • three sets of normally open contacts (not shown) of relay AR in the energization circuit to motor M close at this time to energize motor M with the polarity of its three phase energization voltage reversed from the polarity of the voltage previously supplied through the corresponding contacts of relay AV. Accordingly, motor M starts rotating in its second or reverse direction and the followers E and E begin to move away from each other and from the median plane V.
  • limit switch PC30 When the motor M has driven fol lowers E and E to their positions of maximum separation, limit switch PC31 becomes actuated, signifying that the drum has returned to the initial condition of operation shown in FIG. 4a.
  • the actuation of limit switch P031 causes its contacts in line L3 to open, de-energizing relay AR in line L3.
  • the building drum described herein is not only useful for building tires but that it may be used whenever it is desired to have a radially collapsible and axially retractable, rigid, substantially continuous cylindrical support for the treatment or shaping of flexible and/ or deformable materials.
  • the building drum described herein is not only useful for building tires but that it may be used whenever it is desired to have a radially collapsible and axially retractable, rigid, substantially continuous cylindrical support for the treatment or shaping of flexible and/ or deformable materials.
  • the invention be limited to the use of segments which alternate in size circumferentially of the drum.
  • the segments of the middle section of the drum may all be of the same size, with alternate segments being movable inwardly at a different time and in a different amount than the remaining segments, to achieve collapsing of the middle section.
  • the segments may alternate in size and the alternate segments may still be moved inwardly at different times and in different amounts than the remaining segments.
  • the segments of the middle section can be moved inwardly at the same time, with the segments all being concurrently rotated about their respective central longitudinal axes, to achieve a collapsing of the middle section of the drum in the manner of the closing of the iris of a camera.
  • a radially collapsible and axially retractable building drum comprising a plurlity of juxtaposed, coaxial cylindrical sections, including two end sections and a radially collapsible middle section, which sections, with said middle section in its expanded condition, together define a rigid, cylindrical outer surface; means for radially collapsing said middle section without radially collapsing said end sections; and means for axially moving said uncollapsed end sections relatively toward one another into telescoped relationship with said collapsed middle section.
  • a building drum as claimed in claim 1, said means for axially moving said end sections being constructed and arranged to axially move said end sections while said means for collapsing said middle section is collapsing said middle section.
  • a radially collapsible and axially retractable building drum comprising a plurality of juxtaposed, coaxial cylindrical sections, including two end sections and a radially collapsible middle section, which sections, with said middle section in its expanded condition, together define a rigid, cylindrical outer surface, said middle section being defined by a plurality of circumferentially arranged arcuate segments; means for moving said segments inwardly of said outer surface to collapse said middle section without inwardly collapsing said end sections, said moving means moving said segments in such a manner that adjacent circumferential portions of said segments overlap one another when said middle section is in its collapsed condition; and means for retracting said uncollapsed end sctions axially into telescoped relationship with said collapsed middle section.
  • each of said end sections is defined by a plurality of circumferentially arranged arcuate segments; and further including means interconnected with said retracting means and said segments of said end sections for moving said segments of said end sections inwardly of said sections to a collapsed position surrounding said collapsed middle section, said last named means moving said segments of said end sections in such a manner that adjacent circumferential portions of said segments overlap one another when said segments are in their collapsed position.
  • a radially collapsible and axially retractable building drum comprising a plurality of juxtaposed, coaxial cylindrical sections, including two end sections and a radially collapsible middle section, which sections, with said middle section in its expanded condition, together define a rigid, cylindrical outer surface, said middle section being defined by a plurality of arcuate segments arranged in a circumferential sequence; means for moving alternate ones of said segments radially inward in a first predetermined amount without radially collapsing said end sections, means for moving the remaining ones of said segments radially inward in a second predetermined amount without radially collapsing said end sections, said second predetermined amount being different than said first predetermined amount, whereby upon inward movement or" all said segments said middle section is collapsed radially while said end sections remain uncollapsed; and means for retracting said uncollapsed end sections axially into telescoped relationship with said collapsed middle section.
  • said means for moving alternate ones of said segments radially inward being constructed and arranged to move said alternate ones of said segments inward concurrently with and at a greater speed than said means for moving the remaining ones of said segments moves said remaining segments inward, and said retracting means being constructed and arranged to retract said end sections concurrently with the radially inward movement of said segments.
  • each of said end sections is defined by a plurality of circumferentially arranged arcuate segments; and further including means interconnected with said retracting means and said segments of said end sections for moving said said segments of said end sections radially inward to a collapsed position surrounding said collapsed middle sectlon, said last named means moving alternate ones of said segments of said end sections radially inward to a greater extent than it moves the remaining ones of said segments of said end sections.
  • a radially collapsible and axially retractable buildmg drum comprising a plurality of juxtaposed, coaxial cylindrical sections, including two end sections and a radially collapsible middle section, which sections, with said middle section in its expanded condition, together define a rigid, substantially continuous, cylindrical outer surface, said middle section being defined by a plurality of small arcuate segments and a plurality of large arcuate segments arranged in an alternating circumferential sequence; means for moving said small and large segments radially inward in respective different amounts without radially collapsing said end sections, whereby upon inward movement of said small and large segments said middle section is collapsed radially while said end sections remain uncollapsed; and means for retracting said uncollapsed end sections axially into telescoped relationship with said collapsed middle section.
  • a building drum as claimed in claim 10 said means for moving said small and large segments moving said small segments radially inward concurrently with and at a greater speed than said large segments, and said retracting means being constructed and arranged to retract said end sections concurrently with the radially inward movement of said large and small segemnts of said middle section.
  • each of said end sections is defined by a plurality of small arcuate segments and a plurality of large arcuate seg ments arranged in an alternating circumferential se quence; and further including means interconnected with said retracting means and said small and large segments of said end sections for moving said segments of said end sections radially inward to a collapsed position surrounding said collapsed middle section, said last named means moving said small segments of said end sections radially inward to a greater extent than it moves said large segments of said end sections.
  • a radially collapsible and axially retractable building drum comprising a plurality of juxtaposed, coaxial cylindrical sections, including two end sections and a radially collapsible middle section, which sections, with said middle section in its expanded condition, together define a rigid, substantially continuous, cylindrical outer surface, said middle section being defined by a plurality of small arcuate segments and a plurality of large arcuate segments arranged in an alternating circumferential sequence; means connected to said small segments and to said large segments for simultaneously moving said small segments radially inward in a first predetermined amount and said large segments radially inward in a second predetermined amount without radially collapsing said end sections, whereby upon inward movement of said small and large segments said middle section is collapsed radially while said end sections remain uncollapsed; and means for retracting said uncollapsed end sections axially into telescoped relationship with said collapsed middle section.
  • each of said end sections is defined by 'a plurality of small arcuate segments and a plurality of large arcuate segments arranged in an alternating circumferential sequence; and further including means interconnected with said retracting means and said small and large segments of said end sections for moving said small and large segments of said end sections radially inward to a collapsed position surrounding said collapsed middle section, said last named means moving said small segments of said end sections radially inward to a greater extent than it moves said large segments of said end sections.
  • a building apparatus comprising: a shaft; a first sleeve coaxially carried on said shaft for rotation therewith; a second sleeve coaxially carried on said shaft for rotation therewith; means for axially moving said sleeves relative to one another; a radially collapsible and axially retractable building drum coaxially carried by said shaft, said drum including first and second end sections.
  • a radially collapsible middle section which sections, with said middle section in its expanded condition, together define a rigid, substantially continuous, cylindrical outer surface, said middle section being defined by a plurality of small arcuate segments and a plurality of large arcuate segments arranged in an alternating circumferential sequence; a plurality of first links of a first length interconnecting said first and second sleeves with said large segments; a plurality of second links of a second length greater than said first length interconnecting said first and second sleeves with said small segments, the arrangement being such that axial relative movement of said sleeves with respect to one another causes said small segments to move radially inward from the expanded condition of said middle section at a greater speed and to a greater extent than it causes said large segments to move; and first and second means for moving said respective end sections relatively toward one another, without change of diameter, into telescoped relationship with said middle section when the latter is in its collapsed condition.
  • said sleeve moving means concurrently moving said first and second sleeves in equal amounts in opposite directions, said first and second means for moving said end sections each including a plurality of arms interconnecting their respective end sections with the aforesaid first; links to move said end sections during movement of said first second sleeves.
  • a radially collapsible and axially retractable building drum comprising a plurality of juxtaposed, coaxial cylindrical sections, including two end sections and a radially collapsible middle section, which sections, with said middle section in its expanded condition, together define a rigid, continuous, cylindrical outer surface; means for radially collapsing said middle section; and means for moving said end sections relatively toward one another into telescoped relationship with said middle section when the latter is in its collapsed condition, said means for moving said end sections comprising links connecting said end sections to said middle section, said links operating concurrently with said means for collapsing said middle section.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)
US710530A 1967-04-26 1968-03-05 Radially collapsible and axially retractable building drum Expired - Lifetime US3547733A (en)

Applications Claiming Priority (1)

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FR104325A FR1531460A (fr) 1967-04-26 1967-04-26 Poulie collapsible et rétractable axialement

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US3547733A true US3547733A (en) 1970-12-15

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US (1) US3547733A (de)
BE (1) BE714056A (de)
BR (1) BR6898331D0 (de)
DE (1) DE1778293A1 (de)
FR (1) FR1531460A (de)
GB (1) GB1160059A (de)
LU (1) LU55956A1 (de)
NL (1) NL6805932A (de)
SE (1) SE336668B (de)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867229A (en) * 1974-02-01 1975-02-18 Goodyear Tire & Rubber Tire building drum
US3948717A (en) * 1974-04-15 1976-04-06 Bridgestone Tire Company Limited Tire building drum
US3959064A (en) * 1974-07-08 1976-05-25 The Goodyear Tire & Rubber Company Tire building drum
US5268057A (en) * 1989-12-14 1993-12-07 Sumitomo Rubber Industries Ltd. Tire building apparatus
US5354405A (en) * 1993-11-18 1994-10-11 Wyko, Inc. Bead lock drum for use in the manufacture of vehicle tires
WO1999056944A1 (en) * 1998-05-04 1999-11-11 Wyko, Inc. Tire manufacturing drum having simultaneous axial and radial adjustability
US20040194892A1 (en) * 2001-09-21 2004-10-07 Currie William Dudley Expandable tire building drum with alternating fixed and expandable segments, and contours for sidewall inserts
US8555944B2 (en) 2010-07-09 2013-10-15 Davian Enterprises, LLC Anti-flex assembly
WO2015015095A1 (fr) * 2013-08-01 2015-02-05 Compagnie Generale Des Etablissements Michelin Tambour muni de secteurs mobiles pour la confection d'un pneumatique
WO2015145327A1 (en) * 2014-03-24 2015-10-01 Pirelli Tyre S.P.A. Process and drum for looping annular anchoring structures in a process for building tyres for vehicle wheels
WO2016178180A1 (en) * 2015-05-05 2016-11-10 Marangoni Meccanica S.P.A. Tire building drum
ITUB20153038A1 (it) * 2015-05-05 2017-02-10 Marangoni Mecc S P A Gruppo per la formatura di pneumatici
US9662847B2 (en) 2005-03-30 2017-05-30 Davian Enterprises, LLC Tire building drum having sequenced segment expansion
US9855715B2 (en) 2013-06-07 2018-01-02 Davian Enterprises, LLC Tire building drum with increased range of movement
EP3275638A1 (de) * 2016-07-25 2018-01-31 The Goodyear Tire & Rubber Company Zentraldeckenanordnung für reifenaufbautrommel
US10040262B2 (en) 2014-02-07 2018-08-07 Davian Enterprises, LLC Expandable belt and tread drum with varied curvature segments
WO2018174708A1 (en) * 2017-03-23 2018-09-27 Vmi Holland B.V. Tire building drum and method for operating said tire building drum
US10189221B2 (en) 2012-08-10 2019-01-29 Davian Enterprises, LLC Transfer ring shoe and transfer ring having varied shoe profile
WO2021058958A1 (en) * 2019-09-23 2021-04-01 Burgess Consulting Ltd. Device for supporting a product
US11358356B2 (en) 2018-09-27 2022-06-14 Davian Enterprises, LLC Transfer ring with block and rail system
US11548251B2 (en) 2019-01-28 2023-01-10 Davian Enterprises, LLC Expandable belt and tread drum with reverse offset fingers
US11993043B2 (en) 2020-12-03 2024-05-28 Davian Enterprises, LLC Expandable belt and tread drum with magnetic deck fixing

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FR2509663A1 (fr) * 1981-07-20 1983-01-21 Inst Oboru Dlya Shin Tambour pour la confection d'enveloppes de pneumatiques
JPH0757537B2 (ja) * 1991-03-20 1995-06-21 株式会社森鐵工所 タイヤ成型ドラム装置における可動部を駆動するための装置およびそれを使用したタイヤ成型ドラム装置

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US2004797A (en) * 1931-12-31 1935-06-11 Nat Rubber Machinery Co Collapsible drum
US2339543A (en) * 1940-10-10 1944-01-18 Firestone Tire & Rubber Co Collapsible form
US3405023A (en) * 1964-05-19 1968-10-08 Goodrich Co B F Tire building drum

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US2339543A (en) * 1940-10-10 1944-01-18 Firestone Tire & Rubber Co Collapsible form
US3405023A (en) * 1964-05-19 1968-10-08 Goodrich Co B F Tire building drum

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867229A (en) * 1974-02-01 1975-02-18 Goodyear Tire & Rubber Tire building drum
US3948717A (en) * 1974-04-15 1976-04-06 Bridgestone Tire Company Limited Tire building drum
US3959064A (en) * 1974-07-08 1976-05-25 The Goodyear Tire & Rubber Company Tire building drum
US5268057A (en) * 1989-12-14 1993-12-07 Sumitomo Rubber Industries Ltd. Tire building apparatus
US5354405A (en) * 1993-11-18 1994-10-11 Wyko, Inc. Bead lock drum for use in the manufacture of vehicle tires
WO1999056944A1 (en) * 1998-05-04 1999-11-11 Wyko, Inc. Tire manufacturing drum having simultaneous axial and radial adjustability
US6058999A (en) * 1998-05-04 2000-05-09 Wyko, Inc. Tire manufacturing drum having simultaneous axial and radial adjustability
AU2002301012B2 (en) * 2001-09-21 2007-03-15 The Goodyear Tire & Rubber Company Expandable Tire Building Drum with Alternating Fixed and Expandable Segments, and Contours for Sidewall Inserts
US6863106B2 (en) * 2001-09-21 2005-03-08 The Goodyear Tire & Rubber Company Expandable tire building drum with alternating fixed and expandable segments, and contours for sidewall inserts
US7128117B2 (en) 2001-09-21 2006-10-31 The Goodyear Tire + Rubber Company Expandable tire building drum with alternating fixed and expandable segments, and contours for sidewall inserts
US20040194892A1 (en) * 2001-09-21 2004-10-07 Currie William Dudley Expandable tire building drum with alternating fixed and expandable segments, and contours for sidewall inserts
US9662847B2 (en) 2005-03-30 2017-05-30 Davian Enterprises, LLC Tire building drum having sequenced segment expansion
US8555944B2 (en) 2010-07-09 2013-10-15 Davian Enterprises, LLC Anti-flex assembly
US10189221B2 (en) 2012-08-10 2019-01-29 Davian Enterprises, LLC Transfer ring shoe and transfer ring having varied shoe profile
US9855715B2 (en) 2013-06-07 2018-01-02 Davian Enterprises, LLC Tire building drum with increased range of movement
WO2015015095A1 (fr) * 2013-08-01 2015-02-05 Compagnie Generale Des Etablissements Michelin Tambour muni de secteurs mobiles pour la confection d'un pneumatique
FR3009233A1 (fr) * 2013-08-01 2015-02-06 Michelin & Cie Tambour de confection d'une bande de roulement muni de secteurs mobiles
US10960625B2 (en) 2013-08-01 2021-03-30 Compagnie Generale Des Etablissements Michelin Drum for producing a tire, provided with mobile sectors
US10328647B2 (en) 2013-08-12 2019-06-25 Davian Enterprises, LLC Expandable belt and tread drum having irregular segment profiles
US10040262B2 (en) 2014-02-07 2018-08-07 Davian Enterprises, LLC Expandable belt and tread drum with varied curvature segments
WO2015145327A1 (en) * 2014-03-24 2015-10-01 Pirelli Tyre S.P.A. Process and drum for looping annular anchoring structures in a process for building tyres for vehicle wheels
US11090892B2 (en) 2014-03-24 2021-08-17 Pirelli Tyre S.P.A. Process and drum for looping annular anchoring structures in a process for building tyres for vehicle wheels
CN106232342A (zh) * 2014-03-24 2016-12-14 倍耐力轮胎股份公司 在构造车轮轮胎的工艺中使环形锚固结构成环的工艺和鼓
US10589483B2 (en) 2014-03-24 2020-03-17 Pirelli Tyre S.P.A. Process and drum for looping annular anchoring structures in a process for building tyres for vehicle wheels
RU2684799C2 (ru) * 2014-03-24 2019-04-15 Пирелли Тайр С.П.А. Способ и барабан для обертывания кольцевой крепежной конструкции в процессе сборки шин для колес транспортного средства
CN106232342B (zh) * 2014-03-24 2019-08-13 倍耐力轮胎股份公司 在构造车轮轮胎的工艺中使环形锚固结构成环的工艺和鼓
US20180141294A1 (en) * 2015-05-05 2018-05-24 Marangoni Meccanica S.P.A. Tire building drum
ITUB20153038A1 (it) * 2015-05-05 2017-02-10 Marangoni Mecc S P A Gruppo per la formatura di pneumatici
WO2016178180A1 (en) * 2015-05-05 2016-11-10 Marangoni Meccanica S.P.A. Tire building drum
EP3275638A1 (de) * 2016-07-25 2018-01-31 The Goodyear Tire & Rubber Company Zentraldeckenanordnung für reifenaufbautrommel
US10245796B2 (en) 2016-07-25 2019-04-02 The Goodyear Tire & Rubber Company Center deck assembly for tire building drum
WO2018174708A1 (en) * 2017-03-23 2018-09-27 Vmi Holland B.V. Tire building drum and method for operating said tire building drum
KR102183871B1 (ko) 2017-03-23 2020-11-30 브이엠아이 홀랜드 비.브이. 타이어 성형 드럼 및 그 동작 방법
NL2018566B1 (en) * 2017-03-23 2018-10-03 Vmi Holland Bv Tire building drum and method for operating said tire building drum
US11027507B2 (en) 2017-03-23 2021-06-08 Vmi Holland B.V. Tire building drum and method for operating said tire building drum
KR20190124241A (ko) * 2017-03-23 2019-11-04 브이엠아이 홀랜드 비.브이. 타이어 성형 드럼 및 그 동작 방법
RU2754675C2 (ru) * 2017-03-23 2021-09-06 Вми Холланд Б.В. Барабан для сборки шин и способ его эксплуатации
US11358356B2 (en) 2018-09-27 2022-06-14 Davian Enterprises, LLC Transfer ring with block and rail system
US11548251B2 (en) 2019-01-28 2023-01-10 Davian Enterprises, LLC Expandable belt and tread drum with reverse offset fingers
WO2021058958A1 (en) * 2019-09-23 2021-04-01 Burgess Consulting Ltd. Device for supporting a product
GB2602417A (en) * 2019-09-23 2022-06-29 Burgess Consulting Ltd Device for supporting a product
GB2602417B (en) * 2019-09-23 2024-06-05 Burgess Consulting Ltd Device for supporting a product
US11993043B2 (en) 2020-12-03 2024-05-28 Davian Enterprises, LLC Expandable belt and tread drum with magnetic deck fixing

Also Published As

Publication number Publication date
GB1160059A (en) 1969-07-30
BE714056A (de) 1968-10-23
BR6898331D0 (pt) 1973-02-27
NL6805932A (de) 1968-10-28
LU55956A1 (de) 1969-11-14
SE336668B (de) 1971-07-12
DE1778293A1 (de) 1971-07-29
FR1531460A (fr) 1968-07-05

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