ES2229834B1 - PROCEDURE FOR THE MANUFACTURE OF BUCKETS, ESPECIALLY FOR COOLERS. - Google Patents
PROCEDURE FOR THE MANUFACTURE OF BUCKETS, ESPECIALLY FOR COOLERS.Info
- Publication number
- ES2229834B1 ES2229834B1 ES200200187A ES200200187A ES2229834B1 ES 2229834 B1 ES2229834 B1 ES 2229834B1 ES 200200187 A ES200200187 A ES 200200187A ES 200200187 A ES200200187 A ES 200200187A ES 2229834 B1 ES2229834 B1 ES 2229834B1
- Authority
- ES
- Spain
- Prior art keywords
- polyurethane
- stage
- procedure
- skin
- manufacture
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000004814 polyurethane Substances 0.000 claims abstract description 17
- 229920002635 polyurethane Polymers 0.000 claims abstract description 17
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 9
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims abstract 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000010981 drying operation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003856 thermoforming Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/08—Coating a former, core or other substrate by spraying or fluidisation, e.g. spraying powder
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Procedimiento para la fabricación de cubetas, en especial para enfriadores. Consiste en una primera etapa de conformación de una piel interior (2) en forma de cubeta y una segunda etapa de inyección de espuma de poliuretano (4) sobre la cara exterior de la citada piel (2), y se caracteriza por el hecho de que dicha primera etapa se realiza pulverizando al menos una pasada de poliuretano de fraguado rápido sobre la superficie de un molde (3). De este modo, se reduce el tiempo de fabricación y el empleo de poliuretano de rápido fraguado reduce la operación de secado entre la primera y segunda etapa.Procedure for the manufacture of cuvettes, especially for chillers. It consists of a first stage of shaping an inner skin (2) in the form of a bucket and a second stage of injection of polyurethane foam (4) on the outer face of said skin (2), and is characterized by the fact of that said first stage is carried out by spraying at least one pass of fast setting polyurethane on the surface of a mold (3). In this way, the manufacturing time is reduced and the use of fast setting polyurethane reduces the drying operation between the first and second stage.
Description
Procedimiento para la fabricación de cubetas, en especial para enfriadores.Procedure for the manufacture of cuvettes, in Special for chillers.
La presente invención se refiere a un procedimiento para la fabricación de cubetas, en especial para enfriadores que optimiza considerablemente el proceso de producción.The present invention relates to a procedure for the manufacture of cuvettes, especially for chillers that considerably optimizes the process of production.
Son conocidas las cubetas de material plástico destinadas al montaje en el interior de equipos enfriadores. Dichas cubetas están ideadas para alojar en su interior un evaporador y un banco de hielo alrededor del evaporador. Debido a las condiciones que han de soportar las cubetas están fabricadas por lo menos con una capa exterior de espuma de poliuretano que actúa de aislamiento térmico.Plastic material buckets are known intended for mounting inside cooling equipment. These buckets are designed to house inside an evaporator and a ice bank around the evaporator. Due to the conditions that have to support the cuvettes are manufactured with at least an outer layer of polyurethane foam that acts as insulation thermal.
En la actualidad se conocen dos procedimientos para la fabricación de las cubetas citadas anteriormente.Currently two procedures are known for the manufacture of the cuvettes mentioned above.
Un primer procedimiento conocido presenta una primera etapa en la cual se realiza la piel interior de la cubeta en plástico termoconformado. Posteriormente, en una segunda etapa se inyecta una capa de espuma de poliuretano por la cara exterior de la citada piel. Ambas operaciones de termoconformado y de inyección se realizan mediante dos moldes adecuados.A first known procedure presents a first stage in which the inner skin of the cuvette is performed in thermoformed plastic. Subsequently, in a second stage a layer of polyurethane foam is injected through the outer face of the aforementioned skin. Both thermoforming and Injection are done using two suitable molds.
No obstante, este procedimiento tiene el inconveniente de que presenta operaciones completamente independientes ya que los procesos de termoconformado e inyectado son completamente distintos y cada uno de ellos necesita de una maquinaria específica y de elevado coste económico. Por otro lado, se trata de operaciones con un grado de complejidad elevado que implican un tiempo de producción igualmente elevado, con lo cual, los costes de las cubetas se incrementan.However, this procedure has the inconvenience of presenting operations completely independent since the thermoforming and injected processes they are completely different and each of them needs a specific machinery and high economic cost. On the other hand, these are operations with a high degree of complexity that they imply an equally high production time, which, the costs of the buckets are increased.
Por otra parte, existe un segundo procedimiento para la obtención de las cubetas cuya piel interior se realiza aplicando sobre la superficie exterior de un molde, una pluralidad de capas de resina de poliéster intercalando entre capa y capa una lámina de fibra de vidrio hasta obtener el espesor de la cubeta deseado. Posteriormente, se inyecta una capa de espuma de poliuretano por la parte exterior de dicha piel, y al igual que el procedimiento anteriormente mencionado, ambas operaciones se realizan mediante moldes adecuados.On the other hand, there is a second procedure to obtain the cuvettes whose inner skin is made applying a plurality on the outer surface of a mold of polyester resin layers interspersing between layer and layer a fiberglass sheet until the thickness of the cuvette is obtained wanted. Subsequently, a layer of foam is injected polyurethane on the outside of said skin, and like the procedure mentioned above, both operations are made by suitable molds.
Sin embargo, este procedimiento presenta el inconveniente de que el tiempo de fabricación es elevado ya que la aplicación de las capas de resina de poliéster y 3 fibra de vidrio tiene lugar de forma manual. Además, debido a los materiales empleados en este procedimiento, el tiempo de secado es elevado. Cabe resaltar, que existe la posibilidad de automatizar el citado proceso pero debido al elevado coste de inversión necesario y su escasa rentabilidad, dicha posibilidad es descartada por los fabricantes de cubetas para equipos enfriadores.However, this procedure presents the disadvantage that the manufacturing time is high since the Application of polyester and 3 fiberglass resin layers It takes place manually. In addition, due to the materials used in this procedure, the drying time is high. It should be noted that there is the possibility of automating the aforementioned process but due to the high investment cost needed and its low profitability, this possibility is ruled out by buckets manufacturers for cooling equipment.
El objetivo del procedimiento de fabricación de la presente invención es solventar los inconvenientes que presentan los procedimientos conocidos en la técnica, proporcionando una pluralidad de ventajas que a continuación se describen.The purpose of the manufacturing process of The present invention is to solve the drawbacks they present the procedures known in the art, providing a plurality of advantages described below.
El procedimiento para la fabricación de cubetas, en especial para enfriadores consta de una primera etapa de conformación de una piel interior en forma de cubeta y una segunda etapa de inyección de espuma de poliuretano sobre la cara exterior de la citada piel.The procedure for the manufacture of cuvettes, especially for chillers it consists of a first stage of conformation of a cuvette-shaped inner skin and a second polyurethane foam injection stage on the outer face of the aforementioned skin.
Según una realización del procedimiento de la presente invención, se caracteriza por el hecho de que dicha primera etapa se realiza pulverizando al menos una pasada de poliuretano de fraguado rápido sobre la superficie de un molde.According to an embodiment of the procedure of the The present invention is characterized by the fact that said First stage is done by spraying at least one pass of Quick setting polyurethane on the surface of a mold.
Gracias a este procedimiento, se reduce considerablemente el tiempo de proceso de fabricación de las citadas cubetas ya que se simplifica el proceso respecto a los procedimientos actualmente utilizados. Además, el empleo del poliuretano de rápido fraguado permite reducir o eliminar la operación de secado entre la primera y segunda etapa frente a los tiempos de secado de los procedimientos conocidos.Thanks to this procedure, it is reduced considerably the manufacturing process time of the said cuvettes since the process is simplified with respect to Currently used procedures. In addition, the employment of fast setting polyurethane allows reducing or eliminating drying operation between the first and second stage against Drying times of known procedures.
Preferentemente, se realizan dos o más pasadas de poliuretano de fraguado rápido según el espesor de cubeta deseado.Preferably, two or more passes are made Quick setting polyurethane according to cuvette thickness wanted.
De acuerdo con otro aspecto de la invención, la cubeta está constituida por una sola pieza formada por una piel interior y un recubrimiento de espuma de poliuretano, y se caracteriza por el hecho de que dicha piel es de poliuretano de fraguado rápido.According to another aspect of the invention, the bucket consists of a single piece formed by a skin interior and a polyurethane foam coating, and it characterized by the fact that said skin is made of polyurethane of fast setting.
Gracias a estas características, se obtiene una cubeta para enfriadores realizada con poliuretano, siendo la cubeta fácilmente reciclable a diferencia de las cubetas fabricadas en la actualidad, las cuales están constituidas por capas de distinto material.Thanks to these characteristics, you get a bucket for coolers made of polyurethane, being the bucket easily recyclable unlike buckets made in the actuality, which are constituted by layers of different material.
Con el fin de facilitar la descripción de cuanto se ha expuesto anteriormente se adjuntan unos dibujos en los que, esquemáticamente y tan sólo a título de ejemplo no limitativo, se representa un caso práctico de realización del procedimiento de la invención, en los cuales:In order to facilitate the description of how much It has been exposed above are attached some drawings in which, schematically and only by way of non-limiting example, represents a case study of the procedure of the invention, in which:
La figura 1 es una vista secuencial esquemática 3 del procedimiento de fabricación de cubetas de la invención;Figure 1 is a schematic sequential view 3 of the cuvette manufacturing process of the invention;
y la figura 2 es una vista en alzado lateral seccionado de una cubeta obtenida por el procedimiento de la invención.and figure 2 is a side elevation view sectioning of a cuvette obtained by the procedure of the invention.
Tal como se puede apreciar en la figura 1, el procedimiento de fabricación de la invención está ideado para la realización de cubetas 1 que posteriormente se montan en equipos enfriadores. En concreto, dichas cubetas 1 están destinadas a contener en su interior un evaporador y agua que se hallará normalmente en estado sólido, es decir, en forma de hielo, rodeando el citado evaporador.As can be seen in Figure 1, the manufacturing process of the invention is intended for the realization of cuvettes 1 that are subsequently mounted in equipment chillers Specifically, said cuvettes 1 are intended for contain inside an evaporator and water that will be found normally in solid state, that is, in the form of ice, surrounding the aforementioned evaporator.
El procedimiento consta de una primera etapa a) de conformación de una capa 2 de piel interior con la forma de cubeta 1 diseñada mediante la pulverización de poliuretano de fraguado rápido y elevada densidad sobre un molde macho 3. Cabe la posibilidad de que el molde 3 presente un movimiento de giro respecto de un robot o mecanismo similar que proyecta el poliuretano de fraguado rápido y elevada densidad de manera uniforme sobre las caras exteriores del molde, realizando un número de pasadas en función del espesor de cubeta deseado. Cabe resaltar que este material fragua aproximadamente en dos minutos sobre el molde, de modo que, el tiempo de proceso para la piel es considerablemente inferior respecto a los procesos actualmente empleados.The procedure consists of a first stage a) forming a layer 2 of inner skin in the form of cuvette 1 designed by spraying polyurethane from fast setting and high density on a male mold 3. It fits the possibility that the mold 3 has a turning movement regarding a robot or similar mechanism that projects the fast setting polyurethane and high density so uniform on the outer faces of the mold, making a number of passes depending on the desired cuvette thickness. Worth noting that this material sets in about two minutes on the mold, so that the process time for the skin is considerably lower compared to the processes currently employees.
Finalmente se llega a una segunda etapa b), en la cual se obtiene una segunda capa 4 inyectando espuma de poliuretano sobre la cara exterior de la citada piel mediante la ayuda de un molde hembra 5. Dicha segunda capa 4 actúa de aislamiento térmico.Finally you reach a second stage b), in which is obtained a second layer 4 by injecting foam polyurethane on the outer face of said skin by means of support of a female mold 5. Said second layer 4 acts as thermal isolation.
Cabe destacar que el procedimiento de la invención es fácilmente automatizable, con la consiguiente ventaja de que disminuye el tiempo de producción de las cubetas.It should be noted that the procedure of the invention is easily automatable, with the consequent advantage that the production time of the cuvettes decreases.
En la figura 2, se aprecia con mayor detalle la disposición de las dos capas 2,4 de poliuretano, poliuretano de fraguado rápido y espuma de poliuretano, que conforman la cubeta 1 obtenida mediante el procedimiento de la presente invención.In figure 2, the Arrangement of the two layers 2.4 polyurethane, polyurethane fast setting and polyurethane foam, which make up the bucket 1 obtained by the process of the present invention.
Serán independientes del objeto de la presente invención los materiales que se empleen en el procedimiento de fabricación de las cubetas que se ha descrito, así como las formas y dimensiones de la misma y todos los detalles accesorios que puedan presentarse, pudiendo ser reemplazados por otros técnicamente equivalentes, siempre que no afecten a su esencialidad ni se aparten del ámbito definido por las reivindicaciones que se adjuntan a continuación.They will be independent of the purpose of this invention the materials used in the process of manufacture of the cuvettes described, as well as the shapes and dimensions of it and all the accessory details that can be presented, being able to be replaced by others technically equivalent, as long as they do not affect their essentiality nor depart from the scope defined by the claims that attached below.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200200187A ES2229834B1 (en) | 2002-01-29 | 2002-01-29 | PROCEDURE FOR THE MANUFACTURE OF BUCKETS, ESPECIALLY FOR COOLERS. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200200187A ES2229834B1 (en) | 2002-01-29 | 2002-01-29 | PROCEDURE FOR THE MANUFACTURE OF BUCKETS, ESPECIALLY FOR COOLERS. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2229834A1 ES2229834A1 (en) | 2005-04-16 |
| ES2229834B1 true ES2229834B1 (en) | 2006-07-01 |
Family
ID=34610285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200200187A Expired - Fee Related ES2229834B1 (en) | 2002-01-29 | 2002-01-29 | PROCEDURE FOR THE MANUFACTURE OF BUCKETS, ESPECIALLY FOR COOLERS. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2229834B1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4546900A (en) * | 1984-06-11 | 1985-10-15 | The Mead Corporation | Container having an internal liner together with method and apparatus for forming such container |
| JPH02233383A (en) * | 1989-03-04 | 1990-09-14 | Meisei Kogyo Kk | Heat insulating container and its manufacture |
| BE1005821A3 (en) * | 1992-05-18 | 1994-02-08 | Recticel | PROCESS FOR THE PRODUCTION OF SELF-SUPPORTING APPETIZERS PLASTIC PARTS AND THUS MANUFACTURED trim part. |
| AU1205095A (en) * | 1994-03-25 | 1995-10-17 | Dali Wu | Insulated bath, spa pool, swimming pool, or the like |
-
2002
- 2002-01-29 ES ES200200187A patent/ES2229834B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ES2229834A1 (en) | 2005-04-16 |
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