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ES2346835A1 - System of synchronism for the operation of presses (Machine-translation by Google Translate, not legally binding) - Google Patents

System of synchronism for the operation of presses (Machine-translation by Google Translate, not legally binding) Download PDF

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Publication number
ES2346835A1
ES2346835A1 ES200701968A ES200701968A ES2346835A1 ES 2346835 A1 ES2346835 A1 ES 2346835A1 ES 200701968 A ES200701968 A ES 200701968A ES 200701968 A ES200701968 A ES 200701968A ES 2346835 A1 ES2346835 A1 ES 2346835A1
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Spain
Prior art keywords
cylinders
section
presses
cylinder
synchronism
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Granted
Application number
ES200701968A
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Spanish (es)
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ES2346835B1 (en
Inventor
Jesus Francisco Barberan Latorre
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Individual
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Individual
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Priority to ES200701968A priority Critical patent/ES2346835B1/en
Publication of ES2346835A1 publication Critical patent/ES2346835A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/24—Control arrangements for fluid-driven presses controlling the movement of a plurality of actuating members to maintain parallel movement of the platen or press beam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/22—Synchronisation of the movement of two or more servomotors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Presses (AREA)

Abstract

Synchronism system for the press drive, which consists of arranging pairs of cylinders (5) and (6) with a difference of sections with respect to the opposite corners of the moving plate of the application press, such that the section of one of them is equivalent to the difference between the section of the other cylinder and the section of the stem thereof, said cylinders (5) and (6) being connected in hydraulic connection between the front part of the larger section and the rear part of the smaller section, so that between both cylinders (5) and (6) there is a functional influence that causes the rods of the same to move at the same time in equal displacements. (Machine-translation by Google Translate, not legally binding)

Description

Sistema de sincronismo para el accionamiento de prensas.Synchronization system for driving presses

Sector de la técnicaTechnical sector

La presente invención está relacionada con las prensas de accionamiento plano que comprimen al objeto a prensar entre dos platos enfrentados, proponiendo un sistema que permite conseguir mediante una disposición sencilla la sincronización del paralelismo de los platos de dichas prensas en el accionamiento del prensado, con independencia de la posición en la que se halle el objeto que se prensa.The present invention is related to flat drive presses that compress the object to be pressed between two facing plates, proposing a system that allows achieve the synchronization of the parallelism of the plates of said presses in the actuation of the pressing, regardless of the position in which the object to be pressed.

Estado de la técnicaState of the art

En las prensas de accionamiento plano formadas por dos platos enfrentados, entre los que se comprimen los objetos a prensar, se suelen colocar cilindros hidráulicos de accionamiento iguales, en relación con las zonas de las esquinas de uno de los platos, para actuar el desplazamiento del mismo en contra del otro plato que se mantiene fijo.In flat drive presses formed by two facing plates, between which the objects are compressed to pressing, hydraulic drive cylinders are usually placed equal, in relation to the corner areas of one of the plates, to act the movement of the same against the other plate that stays fixed.

Con dicha disposición se consigue un reparto de la carga que se aplica, en la superficie del plato móvil, de manera que si el objeto a prensar se encuentra situado en una posición centrada, la actuación de la presión sobre el objeto resulta uniforme, ya que los momentos de las fuerzas de los cilindros de accionamiento con respecto al objeto se contrarrestan.With this provision a distribution of the load that is applied, on the surface of the mobile plate, so that if the object to be pressed is located in a position centered, the action of the pressure on the object is uniform, since the moments of the cylinder forces of drive with respect to the object are counteracted.

Sin embargo, si el objeto a prensar se encuentra en una posición descentrada, los momentos de las fuerzas de los cilindros de accionamiento resultan diferentes en relación con el objeto, de manera que el plato móvil ejerce mayor presión sobre una parte del objeto que sobre la otra, por lo que la acción del prensado no es homogénea, dando lugar a una acción del prensado que actúa de manera desigual sobre la extensión del objeto.However, if the object to be pressed is found in an off-center position, the moments of the forces of the drive cylinders are different in relation to the object, so that the mobile plate exerts more pressure on a part of the object over the other, so the action of the pressing is not homogeneous, resulting in a pressing action that acts unevenly on the extent of the object.

Para evitar dicho problema, convencionalmente se recurre al uso de engranajes y reenvíos, de tal manera que los movimientos del plato móvil queden restringidos a un paralelismo con respecto al plato fijo, pudiendo ser la actuación mediante husillos, cremalleras, etc. Esta solución requiere sin embargo unos elementos mecánicos que exigen costosos mecanizados y sufren desgastes que llegan a provocar un funcionamiento precario.To avoid such a problem, it is conventionally it uses gears and forwards, so that the mobile plate movements are restricted to a parallel with with respect to the fixed plate, being able to be the action by means of spindles, zippers, etc. However, this solution requires some elements. mechanics that demand expensive machining and suffer wear they get to cause a precarious operation.

Objeto de la invenciónObject of the invention

De acuerdo con la invención se propone un sistema que permite conseguir siempre una acción sincronizada del accionamiento del plato móvil de las prensas, con una realización sencilla y de fácil aplicación, pero que salva de manera ventajosa los inconvenientes de las disposiciones convencionales.According to the invention, a system that allows to always achieve a synchronized action of the drive of the mobile press plate, with one embodiment simple and easy to apply, but it saves advantageously the drawbacks of conventional provisions.

Este sistema objeto de la invención consiste en la disposición de unos juegos de cilindros de accionamiento de diferentes secciones en relación con el plato móvil de las prensas, combinando en cada juego dos cilindros de diferente sección, los cuales se establecen conectados en comunicación de la parte delantera del primero con la parte trasera del segundo, disponiéndose dichos cilindros respectivamente en relación con las zonas diagonalmente contrapuestas del plato móvil de aplicación.This system object of the invention consists of the arrangement of a set of drive cylinders of different sections in relation to the mobile plate of the presses, combining in each game two cylinders of different section, the which are established connected in communication of the part front of the first with the back of the second, said cylinders being arranged respectively in relation to the diagonally opposed areas of the mobile application plate.

Se obtiene de este modo una disposición que permite, mediante dos juegos iguales de cilindros de diferente sección, actuar un desplazamiento uniformemente paralelo del plato móvil de las prensas, con independencia de la posición en la que se encuentre el objeto a prensar, ya que la conexión entre los cilindros que actúan sobre las partes opuestas, hace que la relación entre ellos origine desplazamientos iguales de los vástagos de los mismos.A provision is thus obtained that allows, through two equal sets of cylinders of different section, act a uniformly parallel displacement of the plate mobile presses, regardless of the position in which they find the object to be pressed, since the connection between the cylinders that act on the opposite parts, makes the relationship among them originate equal displacements of the stems of the same.

El sistema determina por lo tanto una sincronización de la actuación de los cilindros sobre el plato móvil de aplicación, ya que cualquier descompensación que se produzca en una de las partes con respecto a la otra, provoca una reacción entre los cilindros que se hallan conectados, para igualar el desplazamiento de sus vástagos, corrigiéndose así automáticamente la descompensación.The system therefore determines a synchronization of the performance of the cylinders on the mobile plate of application, since any decompensation that occurs in one of the parts with respect to the other, causes a reaction between the cylinders that are connected, to match the displacement of their stems, thus automatically correcting the decompensation.

Por lo tanto, dicho sistema de la invención resulta de unas características ciertamente ventajosas para su función, adquiriendo vida propia y carácter preferente respecto de las disposiciones convencionales de dicha función.Therefore, said system of the invention it results of certain advantageous characteristics for its function, acquiring a life of its own and preferential character regarding the conventional provisions of said function.

Descripción de las figurasDescription of the figures

La figura 1 muestra en esquema la disposición del accionamiento de una prensa según el sistema convencional.Figure 1 shows the layout in outline of the operation of a press according to the conventional system.

La figura 2 es un esquema de la acción del sistema de la figura anterior cuando el objeto a prensar se encuentra centrado.Figure 2 is a schematic of the action of the system of the previous figure when the object to be pressed is It is centered.

La figura 3 es un esquema de la acción del mismo sistema anterior cuando el objeto a prensar se encuentra descentrado.Figure 3 is a schematic of its action previous system when the object to be pressed is off center.

La figura 4 es un esquema de la tendencia de la acción del sistema en las condiciones de la figura anterior.Figure 4 is a schematic of the trend of the system action under the conditions of the previous figure.

La figura 5 es un esquema de la disposición de dos cilindros conectados para el accionamiento de una prensa según el sistema de la invención.Figure 5 is a schematic of the arrangement of two cylinders connected to drive a press according to The system of the invention.

La figura 6 es un esquema de la disposición del accionamiento de una prensa según el sistema de la invención.Figure 6 is a schematic of the arrangement of the actuation of a press according to the system of the invention.

Descripción detallada de la invenciónDetailed description of the invention

El objeto de la invención se refiere a un sistema de sincronismo para las prensas de accionamiento plano, con el fin de que la acción del prensado se produzca con una actuación uniforme sobre toda la dimensión de los objetos a prensar, con independencia de la posición en la que se sitúen dichos objetos entre los platos de la prensa.The object of the invention relates to a synchronization system for flat drive presses, with so that the pressing action occurs with a performance uniform over the entire dimension of the objects to be pressed, with independent of the position in which these objects are located Among the press dishes.

Convencionalmente, como representa la figura 1, las prensas de accionamiento plano comprenden dos platos paralelos (1) y (2), de los que uno se dispone fijo y el otro móvil en el sentido de aproximación y separación respecto del primero, incorporándose en relación con las zonas de las esquinas del plato móvil unos cilindros iguales (3) para actuar el movimiento de dicho plato móvil en la acción del prensado mediante el cierre de la distancia (d) de separación entre ambos platos (1) y (2).Conventionally, as Figure 1 represents, flat-operated presses comprise two parallel plates (1) and (2), of which one is available fixed and the other mobile in the sense of approach and separation from the first, joining in relation to the corners of the plate mobile equal cylinders (3) to actuate the movement of said mobile plate in the action of pressing by closing the distance (d) of separation between both plates (1) and (2).

En esas condiciones el objeto a prensar (4) se coloca entre los dos platos (1) y (2), de modo que cuando el objeto (4) se sitúa centrado, como representa la figura 2, el sistema es estable, ya que se contrarrestan los momentos (M1=F.d1) y (M2=F.d2) de la acción del prensado con relación al objeto (4), en donde (F) es la fuerza de actuación de cada uno de los cilindros (3) de accionamiento del prensado.Under these conditions the object to be pressed (4) is place between the two plates (1) and (2), so that when the object (4) is centered, as shown in Figure 2, the system is stable, since the moments are counteracted (M1 = F.d1) and (M2 = F.d2) of the pressing action in relation to the object (4), where (F) is the actuation force of each of the cylinders (3) of pressing drive.

Sin embargo, cuando el objeto (4) a prensar no
se halla centrado, como en la representación de la figura 3, lo momentos que se ejercen en relación con el objeto (4) no son iguales, ya que en este caso M1=F.d1 << M2=F.d2, lo cual provoca una descompensación de la acción del prensado que tiende a una deformación hacia un punto de equilibrio, como en la figura 4.However, when the object (4) to be pressed does not
it is centered, as in the representation of figure 3, the moments that are exercised in relation to the object (4) are not equal, since in this case M1 = F.d1 << M2 = F.d2, which it causes a decompensation of the action of the pressing that tends to a deformation towards a point of equilibrium, as in figure 4.

Para evitar dicho problema, según el sistema de la invención se disponen pares de cilindros (5) y (6) de diferentes secciones (S5) y (S6), en conexión de la parte delantera del primero con la parte trasera del segundo, como representa la figura 5, siendo la sección (S6) del segundo cilindro (6) igual a la diferencia entre la sección (S5) del primer cilindro (5) y la sección (S7) del vástago (7) de dicho cilindro (5), es decir S6=S5-S7.To avoid this problem, according to the system the invention are arranged pairs of cylinders (5) and (6) of different sections (S5) and (S6), in connection of the front of the first with the back of the second, as shown in figure 5, the section (S6) of the second cylinder (6) being equal to the difference between the section (S5) of the first cylinder (5) and the section (S7) of the rod (7) of said cylinder (5), ie S6 = S5-S7.

En ese conjunto, al desplazarse el émbolo (8) del cilindro (5) una distancia (e), desaloja un volumen V=e. (S5-S7); y dado que S6=S5-S7, la distancia que se desplaza el émbolo (9) del cilindro (6) es e'=V/(S5-S7)=e, de manera que ambos cilindros (5) y (6) resultan perfectamente sincronizados, desplazándose sus émbolos (8) y (9) en recorridos exactamente iguales.In that set, when the piston moves (8) from the cylinder (5) a distance (e), dislodges a volume V = e. (S5-S7); and since S6 = S5-S7, the distance the piston (9) travels from the cylinder (6) is e '= V / (S5-S7) = e, so that both cylinders (5) and (6) are perfectly synchronized, moving their plungers (8) and (9) on exactly the same routes.

En aplicación a una prensa de platos paralelos (10) y (11), como en la figura 6, en relación con las zonas de las esquinas del plato móvil (11) se disponen de manera diagonal sendos pares de cilindros (5) y (6) como los del conjunto representado en la figura 5, con lo cual el accionamiento del prensado resulta siempre uniforme, ya que cualquier descompensación hace que se produzca una reacción entre los cilindros (5) y (6) relacionados, corrigiendo la descompensación.In application to a parallel plate press (10) and (11), as in Figure 6, in relation to the areas of the corners of the mobile plate (11) are arranged diagonally pairs of cylinders (5) and (6) as those of the assembly represented in Figure 5, whereby the pressing operation results always uniform, since any decompensation makes it produce a reaction between the cylinders (5) and (6) related, correcting decompensation.

Claims (2)

1. Sistema de sincronismo para el accionamiento de prensas, de tipo de prensas que comprenden dos platos enfrentados, uno fijo y el otro móvil, accionándose el plato móvil mediante cilindros hidráulicos que actúan sobre las zonas de las esquinas del mismo, caracterizado porque para el accionamiento del plato móvil se disponen dos pares de cilindros formados cada uno de ellos por sendos cilindros (5) y (6) de secciones diferentes, estableciéndose conectada la parte delantera del primer cilindro (5) de cada par con la parte trasera del segundo cilindro (6) del mismo par, siendo la sección del segundo cilindro (6) de cada par equivalente a la sección del primer cilindro (5) del mismo par menos la sección del vástago (7) de dicho primer cilindro (5) del mismo par.1. Synchronism system for the operation of presses, of the type of presses comprising two facing plates, one fixed and the other mobile, the mobile plate being operated by means of hydraulic cylinders acting on the corner areas thereof, characterized in that for the The mobile plate is driven by two pairs of cylinders each formed by two cylinders (5) and (6) of different sections, the front part of the first cylinder (5) of each pair being connected connected to the rear of the second cylinder (6) of the same pair, the section of the second cylinder (6) of each pair being equivalent to the section of the first cylinder (5) of the same pair minus the section of the rod (7) of said first cylinder (5) of the same pair . 2. Sistema de sincronismo para el accionamiento de prensas, de acuerdo con la primera reivindicación, caracterizado porque los cilindros (5) y (6) de cada par de accionamiento se disponen de manera diagonal en relación con zonas de las esquinas del plato móvil de la prensa de aplicación.2. Synchronism system for the operation of presses, according to the first claim, characterized in that the cylinders (5) and (6) of each driving pair are arranged diagonally in relation to areas of the corners of the mobile plate of The application press.
ES200701968A 2007-07-13 2007-07-13 SYNCHRONISM SYSTEM FOR PRESS RELEASE. Withdrawn - After Issue ES2346835B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES200701968A ES2346835B1 (en) 2007-07-13 2007-07-13 SYNCHRONISM SYSTEM FOR PRESS RELEASE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200701968A ES2346835B1 (en) 2007-07-13 2007-07-13 SYNCHRONISM SYSTEM FOR PRESS RELEASE.

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ES2346835A1 true ES2346835A1 (en) 2010-10-20
ES2346835B1 ES2346835B1 (en) 2011-08-09

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ES200701968A Withdrawn - After Issue ES2346835B1 (en) 2007-07-13 2007-07-13 SYNCHRONISM SYSTEM FOR PRESS RELEASE.

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1145924B (en) * 1953-02-17 1963-03-21 Baldwin Lima Hamilton Corp Hydraulic press
DE3233860A1 (en) * 1982-09-11 1984-03-15 Schoen, Hans, 4320 Hattingen Device for holding parallel the slide on hydraulic punching presses
DE4037281A1 (en) * 1989-12-11 1991-06-13 Erfurt Umformtechnik Gmbh Large area accurate plastics press - has hydraulic layout with high speed low load toggles and pressure system with device s to detect and correct deviations from parallelism
WO1998055289A1 (en) * 1997-06-02 1998-12-10 Becfab Equipment Pty. Ltd. Press
US6050430A (en) * 1997-10-31 2000-04-18 Grove U.S. L.L.C. Automatic leveling and synchronization system for counterweight removal and installation
JP2002364604A (en) * 2001-06-08 2002-12-18 Shinmeiwa Auto Engineering Ltd Cylinder synchronization device of gate lifter provided with gate sinking prevention mechanism
JP2005042932A (en) * 1994-09-08 2005-02-17 Shin Meiwa Ind Co Ltd Hydraulic cylinder tuning device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1145924B (en) * 1953-02-17 1963-03-21 Baldwin Lima Hamilton Corp Hydraulic press
DE3233860A1 (en) * 1982-09-11 1984-03-15 Schoen, Hans, 4320 Hattingen Device for holding parallel the slide on hydraulic punching presses
DE4037281A1 (en) * 1989-12-11 1991-06-13 Erfurt Umformtechnik Gmbh Large area accurate plastics press - has hydraulic layout with high speed low load toggles and pressure system with device s to detect and correct deviations from parallelism
JP2005042932A (en) * 1994-09-08 2005-02-17 Shin Meiwa Ind Co Ltd Hydraulic cylinder tuning device
WO1998055289A1 (en) * 1997-06-02 1998-12-10 Becfab Equipment Pty. Ltd. Press
US6050430A (en) * 1997-10-31 2000-04-18 Grove U.S. L.L.C. Automatic leveling and synchronization system for counterweight removal and installation
JP2002364604A (en) * 2001-06-08 2002-12-18 Shinmeiwa Auto Engineering Ltd Cylinder synchronization device of gate lifter provided with gate sinking prevention mechanism

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
(resumen) [en línea] recuperado de: EPODOC & JP 2002364604 A (SHINMEIWA AUTO ENGINEERING LTD) 18.12.2002 todo el documento *
(resumen) [en línea] recuperado de: EPODOC & JP 2005042932 A (SHIN MEIWA IND CO LTD) 17.02.2005, todo el documento *

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