WO2023017194A1 - Moule pour la fabrication d'une semelle au polyuréthane et procédé d'utilisation de ce dernier - Google Patents

Moule pour la fabrication d'une semelle au polyuréthane et procédé d'utilisation de ce dernier Download PDF

Info

Publication number
WO2023017194A1
WO2023017194A1 PCT/ES2021/070609 ES2021070609W WO2023017194A1 WO 2023017194 A1 WO2023017194 A1 WO 2023017194A1 ES 2021070609 W ES2021070609 W ES 2021070609W WO 2023017194 A1 WO2023017194 A1 WO 2023017194A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
perforation
hole
recess
face
Prior art date
Application number
PCT/ES2021/070609
Other languages
English (en)
Spanish (es)
Inventor
José Mari IZQUIETA ANAUT
Original Assignee
Desarrollo Integral Del Molde, S.L.
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 Desarrollo Integral Del Molde, S.L. filed Critical Desarrollo Integral Del Molde, S.L.
Priority to PCT/ES2021/070609 priority Critical patent/WO2023017194A1/fr
Publication of WO2023017194A1 publication Critical patent/WO2023017194A1/fr

Links

Classifications

    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds

Definitions

  • the present invention is encompassed in the field of molds for making shoe soles and the procedure for using said molds, specifically those in which polyurethane is used.
  • Polyurethane is a polymeric material that has been used in the manufacture of shoe soles for a long time, as it lightens the rubber used in the past. Polyurethane is formed by the reaction of its components, polyol and isocyanate, which produces gases.
  • the molds provide gas outlets to facilitate the complete filling of the cavity.
  • the increasing inclusion of protuberances in the soles to provide comfort in the tread means that the usual gas outlets are insufficient, while the protuberances are becoming more complicated day by day, having complex shapes, with an increasingly thin thickness. , and in greater number throughout the length and width of the sole .
  • Patent EP3808522A1 is known in which the mold and the procedure to make a sole by agglutination of particles by an electromagnetic field and that uses the vacuum to help in the filling of the mold, as in the patent EP3338984A2.
  • Patent WO202046717A1 exposes the use of vacuum to improve the filling of a polyurethane shoe sole, without going into details of the configuration of the mold.
  • the object of the invention is a mold and its use procedure for making a polyurethane sole that allows the escape of gases and, therefore, the complete filling of the sole.
  • the technical problem to be solved is to configure the elements of the mold and establish the stages of the procedure to achieve the outlet of the gases that are the object of the invention.
  • the present invention refers to a mold for making a polyurethane sole, the mold comprises a lower plate with a first face that includes a first footprint of the sole, as is known in the state of the technique, that sometimes the lower plate is the complete mold, on other occasions a counter plate or cover is arranged.
  • footprint is meant the imprint or casting of the metal from the mold to create the cavity with the negative of the piece to be formed.
  • the lower part is female and the upper part, when it exists, as a male, although it could be the other way around.
  • the mold is characterized by the fact that it also comprises an intermediate plate after the lower plate and an upper plate after the intermediate plate;
  • the intermediate plate comprises a second face facing the first face and a third face facing a fourth face of the upper plate, a second tread of the sole on the second face, the first and second tread thus forming the cavity for the sole, at least one indentation in the second tread that goes towards the third face, which corresponds to what will be a protuberance of the sole, at least one perforation in the third face that goes towards the second face, the indentation and the perforation they are in a hole;
  • the intermediate plate also includes an opening towards the second face and a recess in the opening in correspondence with the perforation;
  • the upper plate includes a punch or male mold that is inserted into the hole that it makes, the punch, a first contact of between 0.15 mm and 0.25 mm with said hole around the perforation, as a closure, and there is a first separation between the punch and the intermediate plate;
  • the top plate
  • An advantage in line with the object of the invention is that a conduction is created from an area of the mold, the recess in the second footprint, to the outside of the mold, with which a gas outlet is achieved.
  • Another advantage is that the first contact allows the gases to escape but not the polyurethane to escape, so no burrs are created, the sole has its correct shape without excess material, which would also imply an additional operation to remove said material. excess .
  • the invention refers to a procedure for using a mold to make a polyurethane sole as described above, which is characterized in that it comprises the following stages:
  • the cavity that makes up the sole is completely filled with polyurethane thanks to the vacuum
  • the polyurethane also fills the hole, the perforation and the recess and only those configurations thanks to the first contact, which allows the gases to pass, but not the polyurethane; the hole, perforation and recess are accessed by opening the upper plate, these are separated from the formed sole, which is ready for use without excess material to be removed.
  • Figure 1 represents a profile view of the mold of the invention, in figure 2 said mold shows the three plates that make it up separated by rotation.
  • Figure 3 represents a plan view of the lower plate of the mold of Figure 1
  • Figures 4 and 5 both faces of the intermediate plate
  • Figure 6 a perspective view of the upper plate.
  • Figure 7 represents a profile view of a longitudinal section of the mold of Figure 1 and Figure 8 a cross section of figure 7, indicated by arrows in this figure.
  • Figure 1 shows a mold for making a polyurethane sole in a closed state
  • the mold comprises a lower plate (1) with a first face (1.1) that includes a first footprint (1.2), Figures 2 and 3, of the sole, an intermediate plate (2) after the lower plate (1) and an upper plate (3) after the intermediate plate (2);
  • the intermediate plate (2) comprises a second face (2.1) facing the first face (1.1) and a third face (2.3) facing a fourth face (3.1) of the upper plate (3), Figure 2, where the mold it is partially open by rotation thanks to a double hinge between the plates (1,2,3), which is common in sole molds for footwear.
  • Figure 4 shows a second tread (2.2) of the sole on the second face (2.1), at least one recess (2.4) in the second tread (2.2) that goes towards the third face (2.3), on the sole shown, the recesses (2.4) are three in the front part, those on the sides are curved and the central one is straight, and two, straight, in the rear part, as an example, although they could be arranged in any other configuration; the recess (2.4) can be seen clearly in the section of figure 8.
  • the intermediate plate (2) includes at least one perforation (2.6), several in different groups in Figure 5, on the third face (2.3) that goes towards the second face (2.1), the recess (2.4) and the perforation (2.6) if found in a hole (2.5), in the section of figure 8 four recesses (2.4) with their corresponding perforations (2.6) and holes (2.5) are shown; the intermediate plate (2) also includes a recess (2.7) towards the second face (2.1) and a recess (2.8) in the recess
  • the upper plate (3) includes a punch (3.2), Figure 6, which is inserted into the hole (2.7), Figures 7 and 8, which makes a first contact (3.3), Figures 7 and 8, of between 0.15 mm and 0.25 mm with said hollowing (2.7) around the perforation (2.6) and there is a first separation (3.4) between the punch (3.2) and the intermediate plate (2), figures 7 and 8;
  • the upper plate (3) includes a conduit (3.6) in communication with the first separation (3.4), Figure 8, represented by dashed lines; between the first plate (1) and the second plate (2) a second contact (1.3) is established in which first sealing means (4) are arranged, figures 7 and 8; between the second plate (2) and the third plate (3) a third contact (3.5) is established in which second sealing means (5) are arranged, figures 7 and 8.
  • first sealing means (4) and the second sealing means (5) each are O-rings, known elements that work correctly and are available on the market.
  • the perforation (2.6) is between 3 mm and 8 mm high, which has been verified as working correctly.
  • the perforation (2.6) is a cone followed by a cylinder that configures the hole (2.5), an embodiment shown in figure 8, configurations that are easy to execute in a mold and that have been found to work well for the transit of gases;
  • the measurements can be that the cone has a height of 4 mm and the cylinder has a height of 1 mm, verified and that they work correctly.
  • the procedure for using a mold such as the one described for making a polyurethane sole comprises the following stages:
  • the perforation (2.6) is a 4 mm high cone followed by a 1 mm high cylinder that configures the hole (2.5), in the removal of the polyurethane from the hole (2.5), from the perforation (2.6), and of the recess (2.8), the polyurethane of the hole (2.5), of the perforation (2.6), and of the recess (2.8) is separated from the polyurethane of the recess (2.4).
  • this separation is done manually, that is, it breaks by itself, without the need for cutting or separation means, which favors the process as it can be done completely manually or easily automated.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

La présente invention concerne un moule pour la fabrication d'une semelle au polyuréthane qui permet la sortie des gaz. Le moule comprend une plaque inférieure, une plaque intermédiaire et une plaque supérieure; la plaque intermédiaire comportant une entrée et une perforation, les deux se trouvant dans un orifice et comportant un évidement et un évasement dans celui-ci; la plaque supérieure ayant un premier contact de 0,15 à 0,25 mm avec ledit évidement autour de la perforation et une première séparation; la plaque supérieure inclut un conduit en communication avec la première séparation; entre la première plaque et la deuxième plaque sont disposés des premiers moyens d'étanchéité, et entre la deuxième plaque et la troisième plaque sont disposés des seconds moyens d'étanchéité. Dans le procédé, le vide est fait pour la sortie des gaz à la première séparation, qui relie avec le premier contact, la perforation, l'orifice, jusqu'à l'entrée.
PCT/ES2021/070609 2021-08-12 2021-08-12 Moule pour la fabrication d'une semelle au polyuréthane et procédé d'utilisation de ce dernier WO2023017194A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/ES2021/070609 WO2023017194A1 (fr) 2021-08-12 2021-08-12 Moule pour la fabrication d'une semelle au polyuréthane et procédé d'utilisation de ce dernier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2021/070609 WO2023017194A1 (fr) 2021-08-12 2021-08-12 Moule pour la fabrication d'une semelle au polyuréthane et procédé d'utilisation de ce dernier

Publications (1)

Publication Number Publication Date
WO2023017194A1 true WO2023017194A1 (fr) 2023-02-16

Family

ID=85200629

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2021/070609 WO2023017194A1 (fr) 2021-08-12 2021-08-12 Moule pour la fabrication d'une semelle au polyuréthane et procédé d'utilisation de ce dernier

Country Status (1)

Country Link
WO (1) WO2023017194A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017035644A1 (fr) * 2015-08-31 2017-03-09 Proprietect L.P. Moule à évent
CN111391205A (zh) * 2020-03-31 2020-07-10 蔡庆忠 一种鞋底成型模具及采用其制作软弹鞋底的方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017035644A1 (fr) * 2015-08-31 2017-03-09 Proprietect L.P. Moule à évent
CN111391205A (zh) * 2020-03-31 2020-07-10 蔡庆忠 一种鞋底成型模具及采用其制作软弹鞋底的方法

Similar Documents

Publication Publication Date Title
JP2007055148A (ja) 射出成形用金型装置及び射出成形方法
US20120114777A1 (en) Removable device for moulding a flexible wall in the groove of a tire pattern
JPH11245259A (ja) レンズの製造方法、レンズの製造装置及びレンズ
US20070193068A1 (en) Footwear mold assembly with removable plate and method of manufacturing footwear
US5861120A (en) Method of producing waterproof connector housing
WO2006027979A1 (fr) Moule pour le moulage de mousse et procede de moulage de mousse
CA2323888A1 (fr) Procede de fabrication de pneus avec agent d'etancheite et pneus avec agent d'etancheite
WO2023017194A1 (fr) Moule pour la fabrication d'une semelle au polyuréthane et procédé d'utilisation de ce dernier
US20110193265A1 (en) Vulcanizing mold and vulcanizing method
KR20180043665A (ko) 배터리 커버, 금형 및 금형을 통해 배터리 커버를 제조하는 방법
CN201769357U (zh) 一种吹气连帮鞋模
KR20100037853A (ko) 타이어 가류금형의 에어 밸브 및 이를 이용한 타이어 가류금형의 공기 배출구조
JP2018202620A (ja) 構造体及び製造方法
ES2195808T3 (es) Procedimiento de fabricacion de un elemento de caucho estratificado y elemento de caucho estratificado asi fabricado.
JP2005152976A (ja) 造型用型
JP3487566B2 (ja) 発泡成形用金型
JP4568704B2 (ja) 靴底の射出成形用金型装置
JP2877803B1 (ja) 樹脂成形金型およびその製法ならびに樹脂成形方法
CN217018475U (zh) 一种提升镂空盖体铸造质量的模仁结构
CN211031007U (zh) 一种成本较低的生产尺子用双色模具
CN208164201U (zh) 一种微型开关按钮的注塑模具
JPH0532270Y2 (fr)
KR200167716Y1 (ko) 논트림잉 타이어용 몰드의 공기배출구조
KR20230122440A (ko) 고속 금형장치
JP2002240105A (ja) 成形用金型装置とこれを用いた成形方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21953439

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE