WO2019224704A1 - Procédé de fabrication de tubes internes et tube interne ainsi obtenu - Google Patents

Procédé de fabrication de tubes internes et tube interne ainsi obtenu Download PDF

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Publication number
WO2019224704A1
WO2019224704A1 PCT/IB2019/054172 IB2019054172W WO2019224704A1 WO 2019224704 A1 WO2019224704 A1 WO 2019224704A1 IB 2019054172 W IB2019054172 W IB 2019054172W WO 2019224704 A1 WO2019224704 A1 WO 2019224704A1
Authority
WO
WIPO (PCT)
Prior art keywords
reinforcing element
tubular body
fact
inner tube
opening
Prior art date
Application number
PCT/IB2019/054172
Other languages
English (en)
Inventor
Adriano Barbieri
Original Assignee
Barbieri S.N.C. Di Barbieri Nadia E Kalman
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Barbieri S.N.C. Di Barbieri Nadia E Kalman filed Critical Barbieri S.N.C. Di Barbieri Nadia E Kalman
Priority to EP19735387.3A priority Critical patent/EP3797030A1/fr
Publication of WO2019224704A1 publication Critical patent/WO2019224704A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C5/00—Inflatable pneumatic tyres or inner tubes
    • B60C5/10—Inflatable pneumatic tyres or inner tubes formed as a single discontinuous ring with contiguous ends which may be connected together
    • 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
    • B29D23/00—Producing tubular articles
    • B29D23/24—Endless tubes, e.g. inner tubes for pneumatic tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B29C66/52211—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other for making endless tubular articles, e.g. endless inner tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5227—Joining tubular articles for forming multi-tubular articles by longitudinally joining elementary tubular articles wall-to-wall (e.g. joining the wall of a first tubular article to the wall of a second tubular article) or for forming multilayer tubular articles
    • B29C66/52271—Joining tubular articles for forming multi-tubular articles by longitudinally joining elementary tubular articles wall-to-wall (e.g. joining the wall of a first tubular article to the wall of a second tubular article) or for forming multilayer tubular articles one tubular article being placed inside the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/526—Joining bars
    • B29C66/5261—Joining bars for forming coaxial connections, i.e. the bars to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • B29C66/636—Internally supporting the article during joining using a support which remains in the joined object
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/727—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being porous, e.g. foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B29K2105/046—Condition, form or state of moulded material or of the material to be shaped cellular or porous with closed cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/24—Endless tubes, e.g. inner tubes for pneumatic tyres
    • B29L2023/245—Inner tubes

Definitions

  • the present invention relates to a manufacturing process of inner tubes and inner tube thus obtainable.
  • a well-known type of bicycle tyre is the tubeless tyre.
  • a circular section bar made of semi-rigid material (often closed cell foam polyethylene) can be inserted, which is folded on itself to make its extremities mate together, forming a ring.
  • the tyre together with the ring is then mounted on the wheel rim and inflated.
  • the semi-rigid ring serves as a reinforcement, helping to cushion the impact of the wheel against the roughness of the ground and supporting the wheel itself in the absence of pressure inside the tubeless in the event of a puncture.
  • the known tubeless method has some drawbacks, including the fact that a tubeless tyre risks explosion in the event of a very violent impact against an obstacle.
  • the inner tube is inserted into a tyre, which is then mounted on the wheel rim, and finally the inner tube is inflated.
  • the external tyre is still equipped with a complex texture, but it is not inflated, so it does not need to seal and does not need to be replaced in case of puncture.
  • This known method does have some drawbacks, including the fact that it does not offer any protection against punctures.
  • a possible puncture determines the immediate deflation of the inner tube, without any gradualness or support.
  • the main aim of the present invention is to create a reinforced inner tube in a simple and effective way, which is able to combine the positive features of tubeless technology and of the traditional inner tube, remedying the drawbacks of both.
  • one object of the present invention is to devise a manufacturing process that makes it possible to obtain an inner tube which is able to support the wheel in the event of a puncture.
  • One more object of the present invention is to propose an inner tube that does not risk explosion in case of any particularly violent impact against an obstacle.
  • Another object of the present invention is to devise an inner tube that allows containing the replacement costs in case of a puncture.
  • a further object of the present invention is to devise a manufacturing process of reinforced inner tubes, and relative inner tube thus obtained, which allow overcoming the mentioned drawbacks of the prior art in the context of a simple, rational, easy, efficient to use and cost-affordable solution.
  • Figure 1 shows an inner tube according to the invention.
  • Figures 2-6 are schematic representations of the manufacturing process of the inner tubes according to the invention.
  • reference numeral 1 globally indicates a reinforced inner tube.
  • the inner tube 1 comprises a tubular body 2 made of elastic material, which defines an inner cavity 3 adapted to be filled with air during inflation.
  • the inner tube 1 comprises at least one reinforcing element 4 housed inside the inner cavity 3.
  • vent valve 5 connected to the tubular body 2.
  • the reinforcing element 4 is made of at least one semi-rigid material, being adapted to absorb the impacts with the roughness of the ground and to give a certain degree of rigidity to the tyre, such as to provide support thereto in the event of a puncture.
  • the aforementioned semi-rigid material consists of closed cell expanded neoprene, but the possibility cannot be ruled out of using different semi-rigid materials, such as e.g. foam polyethylene, or combinations of a plurality of semi-rigid materials.
  • the reinforcing element 4 is a solid circular section bar.
  • the inner tube 1 preferably comprises a single reinforcing element 4.
  • the reinforcing element 4 has a different shape or section, for example a hollow circular section or the like, or wherein there are more than one reinforcing element 4, for example connected in series to each other.
  • a first step comprises the supply of an inner tube 1, which comprises a tubular body 2 that defines an inner cavity 3.
  • a second step involves the supply of at least one reinforcing element 4, which has a substantially elongated shape and is provided with end portions 6.
  • the next step is to execute at least one opening 7 in the tubular body 2 of the inner tube 1.
  • this opening 7 is obtained by means of a transversal cutting operation made on the tubular body 2 of the inner tube 1 , which separates a first extremity 8 from a second extremity 9 of the tubular body 2.
  • this opening 7 is only one in Figures 2-6, but it cannot be ruled out that a larger number of them can be made.
  • this opening may be obtained in a different way from that described above, e.g. by means of a partial cutting operation adapted to create a kind of window in the tubular body.
  • the process envisages a step comprising the insertion of the reinforcing element 4 in the inner cavity 3 of the inner tube 1, through the opening 7 previously made.
  • the process comprises a folding step of the reinforcing element 4 in order to obtain a substantially ring-like shape, such as to adapt to the circular shape of the inner tube 1.
  • a further step of the process comprises the joining of the end portions 6 of the reinforcing element 4 which, in the preferred embodiment shown in Figures 1-6 and in particular in Figure 4, are located adjacent to each other as a result of the folding operation.
  • the adjacent end portions 6 to be joined together would not belong to the same element 4 but to different elements 4, without however substantially altering the process described above.
  • step of joining the adjacent end portions 6 comprises at least one step of gluing, made by means of a first glue material 10, as schematically shown in Figure 4. The possibility cannot be ruled out of also carrying out this joining step in another way, e.g. by sealing the end portions 6.
  • the process comprises a further step consisting in closing the opening 7 made on the tubular body 2 of the inner tube 1.
  • This closure is preferably done by means of at least one gluing operation.
  • this closing step in turn comprises at least the following steps, illustrated in Figures 5 and 6:
  • the inner tube thus obtained is able to provide support to the tyre in the event of a puncture, offering some protection thanks to the presence of the reinforcing element.
  • the inner tube thus obtained is able to better absorb the impacts with the roughness of the ground.
  • the tyre is not liable to explode in the event of a violent impact against an obstacle.
  • the position of the reinforcing element, inside the cavity defined by the tubular body of the inner tube, does not reduce the space available of the inner tube, which therefore does not need to adapt to its size.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
  • Air Bags (AREA)

Abstract

L'invention concerne un procédé de fabrication de tubes internes (1) comprenant les étapes suivantes, consistant à : - fournir au moins un tube interne (1) pourvu d'au moins un corps tubulaire (2) définissant au moins une cavité interne (3), - fournir au moins un élément de renfort (4) présentant une forme sensiblement allongée et pourvu de parties d'extrémité (6), - réaliser au moins une ouverture (7) dans le corps tubulaire (2), - introduire l'élément de renfort (4) dans la cavité interne (3) à travers l'ouverture (7), - plier l'élément de renfort (4), pour obtenir une forme sensiblement annulaire, - assembler des parties d'extrémité (6) adjacentes de l'élément de renfort (4), - fermer l'ouverture (7) dans le corps tubulaire (2).
PCT/IB2019/054172 2018-05-22 2019-05-21 Procédé de fabrication de tubes internes et tube interne ainsi obtenu WO2019224704A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19735387.3A EP3797030A1 (fr) 2018-05-22 2019-05-21 Procédé de fabrication de tubes internes et tube interne ainsi obtenu

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102018000005601A IT201800005601A1 (it) 2018-05-22 2018-05-22 Procedimento di fabbricazione di camere d'aria e camera d'aria cosi' ottenibile
IT102018000005601 2018-05-22

Publications (1)

Publication Number Publication Date
WO2019224704A1 true WO2019224704A1 (fr) 2019-11-28

Family

ID=63244788

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2019/054172 WO2019224704A1 (fr) 2018-05-22 2019-05-21 Procédé de fabrication de tubes internes et tube interne ainsi obtenu

Country Status (4)

Country Link
EP (1) EP3797030A1 (fr)
IT (1) IT201800005601A1 (fr)
TW (1) TW202003286A (fr)
WO (1) WO2019224704A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1311738A (en) * 1918-05-11 1919-07-29 Method of making puncture-proof tire-tubes
FR528047A (fr) * 1919-11-15 1921-11-05 Montague Ernest Simes Perfectionnements aux chambres à air pour bandages pneumatiques
CN205736679U (zh) * 2016-07-19 2016-11-30 孙长浩 一种车用无接头快装内胎

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1311738A (en) * 1918-05-11 1919-07-29 Method of making puncture-proof tire-tubes
FR528047A (fr) * 1919-11-15 1921-11-05 Montague Ernest Simes Perfectionnements aux chambres à air pour bandages pneumatiques
CN205736679U (zh) * 2016-07-19 2016-11-30 孙长浩 一种车用无接头快装内胎

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MEFO SPORT GMBH: "Mefo Mousse- Programm 2017", pages 1 - 4, XP002788267, Retrieved from the Internet <URL:https://issuu.com/mefosport/docs/mom_flyer_2017> [retrieved on 20190122] *

Also Published As

Publication number Publication date
IT201800005601A1 (it) 2019-11-22
EP3797030A1 (fr) 2021-03-31
TW202003286A (zh) 2020-01-16

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