• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    System (1) for the fastening of dies in laminating machines for laminar material, comprising fastening means between a die and a cylinder or die-holder surface (3), said means having a plurality of bolts (4) located in inserts carried out in the die-holder cylinder (3) capable of linearly axial movement, each of the bolts being actuated by a main actuator device. Each bolt (4) has a body with a longitudinal section in the shape "T", each bolt being connected to a trigger (7) having a through hole (70) through which the bolt (4) is slidable, said hole passing a complementary non-circular section with the cross-section of the section of bolt shank (40), the trigger (7) being actuated by a secondary actuator device such that it is capable of performing a rotary movement in a functional condition. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2691168A1
    申请号:ES201830138
    申请日:2018-02-16
    公开日:2018-11-23
    发明作者:Ramon SERRA OBIOL；Jordi PUIG VARGAS
    申请人:Comercial Industrial Maquinaria Carton Ondulado SL CIMCOSA；
    IPC主号:
    专利说明:

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    System for fastening dies in die cutting machines
    of sheet material
    OBJECT OF THE INVENTION
    The object of this invention patent application is to register a system for fastening dies in die-cutting machines of sheet material that has a series of advantages over the prior art, the characteristics of which are set forth in the attached claim 1.
    More specifically, the object of the invention refers to an automatic system for fastening dies. Said system does not require the addition of additional parts to the die nor does it have to make any relative movement with respect to the counter-die cylinder.
    BACKGROUND OF THE INVENTION
    The fastening of a die on a die-holder cylinder is usually done by using screws. The die-holder cylinder has a rectangular pattern of threaded holes in its surface while the die has a sufficient number of through holes coinciding with said pattern in order to ensure a firm fixation. Therefore, an operator presents the die on the die-holder cylinder and then fixes it using conventional screws and tools.
    The handling of dies is a maneuver with certain risks for the operator because it is a heavy element that contains sharp elements.
    To facilitate the operation of fixing the die on the die-holder cylinder, different systems exist on the market, however, in practice it has been observed that they have certain drawbacks.
    One of the existing systems requires adding additional parts to the die at the bottom, which fit with certain moving parts of the die-holder cylinder. Said parts act as a clamp and once activated they grip the die to the surface of the cylinder. Do not
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    However, said system has the disadvantage of making the dies more expensive by having to mount the parts that match the cylinder clamp device therein. Another problem detected is the manufacturing of the cylinder that is very expensive due to the complexity of the system and the need to incorporate hydraulic actuators.
    Another system present in the market is based on the use of mushroom-shaped parts that protrude from the surface of the die-holder cylinder when acting on the pneumatic cylinders associated with each of them by applying pressurized air. In a resting position, said "mushrooms" remain in their lower position flush with the surface of the die-holder cylinder. The dies have lock-shaped holes coinciding with the position of the mushrooms so that they allow them to pass through them when they are raised. Once the mushrooms are lifted, a small rotation of the die is made with respect to the die-holder cylinder to position the mushroom in the narrow part of the hole in the form of a lock. Then, it is depressurized and the mushrooms descend by force of a spring until the die is fixed since the head of the mushroom has a larger diameter than the narrow part of the hole in the form of a lock made in the die.
    However, a drawback detected in the system described above is that the necessary relative rotation of the die with respect to the die-holder cylinder can be difficult, especially in large dies. Also, a drawback derived from this necessary rotation lies in the fact that the arc of at least one of the two tiles that make up the die must inevitably be less than 180 degrees, whereby die cutting surface is lost.
    DESCRIPTION OF THE INVENTION
    The present invention has been developed in order to provide a system for fastening dies that is configured as a novelty within the field of application and resolves the aforementioned drawbacks, also providing other additional advantages that will be apparent from the Description attached below.
    It is therefore an object of the present invention to provide a system for fastening dies in die-cutting machines of sheet material, which comprises fastening means between a die and a cylinder or die-holder surface around which it is
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    the die disposed, said means being a plurality of bolts located in inserts made in the die-holder cylinder capable of performing a linearly axial movement, each of the bolts being driven by a main actuator device housed inside a coupled actuator cylinder to the die-holder cylinder.
    In particular, the invention is characterized by the fact that each bolt has a body with a "T" shaped section, each bolt being connected to a trigger located in the die-holder cylinder, which has a through hole through which it is the bolt slidable, said through hole having a non-circular section complementary to the cross-section of the bolt stem section.This trigger actuated by a secondary actuator device is capable of performing a rotational movement in a functional condition.
    Thus, in a functional condition in which the secondary actuator device is activated and the bolt is in an extended condition in which the head of the bolt is located by the outer region of the die, the trigger makes an angular movement so that turn the bolt in solidarity with it.
    Thanks to these characteristics, the "T" shaped bolt has two independent movements, a "vertical" linear movement that makes the bolt head protrude from the surface of the die-holder cylinder and a second rotating movement that makes the bolt can rotate with respect to its own axis, for example, at an angle of 90 degrees. In this way, it is possible to securely fix the die on the die-holder cylinder. In a rest position, the bolt remains hidden in a cavity made in an insert cover, leaving the head of the bolt dragged from the surface.
    In a preferable embodiment, the through hole present in the trigger has a quadrangular section complementary to a quadrangular cross section of the stem section.
    According to another aspect of the invention, the main actuator device comprises a piston movable by the action of a pressurized fluid inside the actuator cylinder from a source of pressurized fluid supply, presenting elastic means mounted on the piston that are in contact With the bolt.
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    Preferably, the elastic means of the main actuator device comprise a helical spring housed in a central cavity having an end in contact with a stop surface while the opposite end is linked to a plate that is in contact with the bolt.
    According to another aspect of the invention, the secondary actuator device comprises a pressurized fluid supply installation capable of supplying pressurized fluid to a cavity defined by the trigger and an insert cover that covers the actuator cylinder, such that when the fluid is applied pressurized the trigger moves angularly.
    Advantageously, a seal between the actuator cylinder and the piston is provided, so that pressurized fluid intended to drive the piston is prevented from being conducted in an undesired manner, which could cause pressure losses during system operation. Fixing.
    Advantageously, the trigger includes elastic return means, such as, for example, a coil spring that is at one end butting with a lower face of an intermediate cover arranged around the trigger and at the other end is in contact with a surface of stop coupled in solidarity to a projection that extends inferiorly from the trigger.
    Other features and advantages of the fastening system object of the present invention will be apparent from the description of a preferred but not exclusive embodiment, which is illustrated by way of non-limiting example in the accompanying drawings, in which:
    BRIEF DESCRIPTION OF THE DRAWINGS
    Figure 1.- It is an exploded perspective view of the system for fastening dies in die cutting machines according to the present invention in a conventional die;
    Figure 2.- It is a sectional view of the fastening system according to the invention;
    Figure 3.- It is a top plan view of the fastening system in a functional condition;
    Figure 4.- It is a perspective view of the bolt;
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    Figure 5.- It is a detailed perspective view of the bolt, the trigger and the elastic means linked thereto;
    Figures 6a-e.- It is a sequential sectional and plan view of the operation of the fastening system in accordance with the present invention;
    Figure 7a.- It is a plan view of the fastening system in the functional conditions represented in the previous figures 6a and 6b;
    Figure 7b.- It is a plan view of the fastening system in the functional conditions represented in the previous figures 6c and 6d; Y
    Figure 8.- It is an exploded perspective view of the trigger and elements involved in its rotation.
    DESCRIPTION OF A PREFERRED EMBODIMENT
    In view of the aforementioned figures and, according to the numbering adopted, an example of a preferred embodiment of the invention can be observed therein, which comprises the parts and elements indicated and described in detail below.
    In particular, the system for fastening dies in die-cutting machines of sheet material comprises clamping means, generally indicated by reference (1) between a die (2) and a die-holder cylinder (3) around the which the die (2) is arranged, said means having a plurality of bolts (4) located in inserts made in the die-holder cylinder (3) capable of performing a linearly axial movement, each of the bolts (4) being driven by a main actuator device housed inside an actuator cylinder (5) which is coupled in a corresponding hole (6) made to the die-holder cylinder (3).
    As can be seen in Figures 4 and 5, each bolt (4) has an elongated body with a longitudinal section in a "T" shape, such that it defines a stem section (40) and a head (41).
    Each bolt (4) is linked to a trigger (7) actuated by a secondary actuator device, being located in the actuator cylinder (5) and having a through hole (70) through which the bolt (4) is slidable, having said through hole (70) a non-circular section complementary to the cross-section of the bolt stem section. The trigger (7) is
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    provided so that the bolt (4) in a functional condition can perform a rotating movement.
    With particular reference to the main actuator device it comprises a piston (8) movable along the actuator cylinder (5) by the action of a pressurized fluid that is directed into a chamber (50) present in the lower part of the actuator cylinder from a source of pressurized fluid supply. Said pressurized air enters the chamber (50) through an inlet (51) connected to a duct (9) connected to a source of pressurized air supply (not shown).
    Additionally, elastic means located in an inner cavity (80) located in the piston (8) that are in contact with the bolt (4) are provided.
    More specifically, these elastic means of the main actuator device comprise a helical spring (10) housed in a centered inner cavity (80) having an end in contact with a stop surface (81) of the piston (8) while the opposite end It is linked to a stop plate (11) that is in contact with the bolt (4).
    In order for the trigger (7) to return to a resting or initial position, elastic return means are provided comprising a helical spring (12) that is at one end butting with a lower face of an intermediate cover (21) arranged around the trigger (7) while the other end of the helical spring (12) is in contact with a stop surface defined by a disk element (17) integrally engaged in a projection extending from the trigger (7). Mention that the intermediate cover (21) has a substantially discoidal shape provided with a recess (or cut portion) that would define the cavity
    (fifteen) .
    The insert cover (13) is fixed to the actuator cylinder (5) by a plurality of fasteners (14), as can be seen in Figures 1 and 3.
    As can be seen more clearly in Figure 2, a seal is provided
    (16) between the actuator cylinder (5) and the piston (8), so that pressurized fluid intended to drive the piston (8) is prevented from being conducted in an undesired manner. This board of
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    Sealing (16) is located in a radial cavity (52) made in a widened section of the side wall of the actuator cylinder (5).
    Based on the system described above, the procedure for placing and removing a die is as follows:
    To fix the die on the die-holder cylinder, the die (2) is placed on the die-holder cylinder in a certain position in which the grooves (22) made in the die (2) coincide with the bolts (4), Air is applied to the cavity (15) of the trigger (8) to keep the elongated portion of the bolt head perpendicular to the longitudinal axis of the die-holder cylinder (3) (see Figure 6a). Next, compressed air is applied inside the actuator cylinder (5) to raise the piston (8) (see Figure 6b). In the event that the die (2) has a groove (22) coinciding with the insert (see Figure 1), the bolt (4) will pass through the die through said groove (22). In the case of no groove, the piston will rise the same but the bolt will remain in its initial position (see Figure 6e). This is because a relative movement is enabled between the bolt (4) and the piston (8) in which the bolt (4) can penetrate the piston (8) if the force of a spring (10) expires, being said force substantially less than the force of the piston (8). This should be so that the bolt (4) cannot separate the die (2) from the die-holder cylinder (3) where there are no grooves. Once the bolt (4) has passed through the grooves of the die, compressed air is no longer applied to the trigger cavity (15) from the conduit (19) that is part of the secondary actuator device and the torsion spring (12) rotates the bolt (4) 90 degrees. Thus, at this time the elongated portion of the head (41) of the bolt is parallel to the longitudinal axis of the die-holder cylinder (3) and perpendicular to the groove (22) of the die (2) (see Figure 6c) .
    Mention that the conduit (19) is in fluid communication with the cavity (15) through an outlet (20) located on the side wall of the insert cover (13).
    Subsequently, compressed air is no longer supplied inside the actuator cylinder (5) and the coil spring (18) causes the piston (8) to lower and the bolt (4) in turn by means of a stop at its bottom until that the bolt head (41) abuts the die (2), at which point the die (2) is firmly attached to the die-holder cylinder (3) (see the
    figure 6d). Thus, advantageously there is no need to apply pressurized air to the system during die cutting.
    On the other hand, for the operation of extracting the die from the die-holder cylinder, 5 will proceed in reverse, so that compressed air is applied inside the chamber of the actuator cylinder (5) so that it ascends (according to the orientation of the drawings) the piston (8), the head (41) of the bolt rises and stops holding the die (2). In this case, pressurized air is also applied to the trigger cavity (7) to rotate it 90 degrees and this in turn rotates the bolt (4), whereby the head (41) of the bolt is aligned with the groove 10 of the die (2). Next, air is no longer applied to the interior of the actuator cylinder (5), such that the piston (8) and the bolt descend to its resting position. Once the bolt (4) rests in the cavity of the insert cover (13), dragging the surface of the die-holder cylinder (3), pressurized air is no longer applied to the trigger cavity. At this time the die (2) is completely free.
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    The details, shapes, dimensions and other accessory elements, as well as the materials used in the manufacture of the fastening system of the invention may be conveniently substituted by others that are technically equivalent and do not depart from the essentiality of the invention or the scope defined by the claims included below.
    权利要求:
    Claims (10)
    [1]
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    1. System (1) for fastening dies in die-cutting machines of sheet material, comprising means for holding between a die and a cylinder or die-holder surface (3) around which the die (2) is arranged, presenting said means a plurality of bolts (4) located in inserts made in the die-holder cylinder (3) capable of performing a linearly axial movement, each of the bolts being driven by a main actuator device housed inside an actuator cylinder (5) coupled to the die-holder cylinder, characterized in that each bolt (4) has a body with a longitudinal section in a "T" shape, each bolt being linked to a trigger (7), being located in the cylinder die holder having a through hole (70) through which the bolt (4) is slidable, said through hole having a non-circular section complementary to the cross-section of the stem section (40) of p erno, in which the trigger (7) is actuated by a secondary actuator device such that it is capable of performing a rotational movement in a functional condition,
    such that in a functional condition in which the secondary actuator device is activated and the bolt (4) is in an extended condition in which the head of the bolt is located by the outer region of the die (2), the trigger (7) it makes an angular movement so that it rotates the bolt (4) in a caring manner.
    [2]
    2. System for fastening dies according to claim 1, characterized in that the through hole present in the trigger (7) has a complementary quadrangular section with a quadrangular cross section of the stem section.
    [3]
    3. System for fastening dies according to any of the preceding claims, characterized in that the main actuator comprises a piston (8) movable by the action of a pressurized fluid inside the actuator cylinder (5) from a source of pressurized fluid supply, presenting elastic means mounted on the piston (8) that are in contact with the bolt (4).
    [4]
    4. System for fastening dies according to claim 3, characterized in that the elastic means of the main actuator comprise a helical spring housed in an inner cavity having an end in contact with a surface
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    piston stop (8) while the opposite end is linked to a plate that is in contact with the bolt (4).
    [5]
    5. System for fastening dies according to any of the preceding claims, characterized in that the secondary actuator device comprises a pressurized fluid supply installation capable of supplying pressurized fluid to a cavity (15) defined by the trigger (7 ) and an insert cover (13) that covers the actuator cylinder (5) superiorly, such that when the pressurized fluid is applied the trigger (7) moves angularly.
    [6]
    System for fastening dies according to any of the preceding claims, characterized in that a sealing gasket (16) is provided between the actuator cylinder (5) and the piston (8).
    [7]
    7. System for holding dies according to any of the preceding claims, characterized in that a pressurized fluid inlet is provided from the pressurized fluid supply installation linked to the trigger (7), which is located in a side wall of the insert cover (13).
    [8]
    8. System for holding dies according to any of the preceding claims, characterized in that the trigger (7) includes elastic return means.
    [9]
    9. System for fastening dies according to claim 8, characterized in that the elastic return means comprise a helical spring (12) which is at one end butting with a lower face of an intermediate cover (21) arranged around the trigger (7) and at the other end it is in contact with a buttress surface coupled integrally in a projection extending from the trigger (7).
    [10]
    10. System for fastening dies according to any of the preceding claims, characterized in that the pressurized fluid supply installation of the secondary actuator device comprises a conduit (19) which is in fluid communication with the cavity (15) a through an outlet (20) located on the side wall of the insert cover (13).
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    同族专利:
    公开号 | 公开日
    ES2691168B2|2020-02-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    ES2120320A1|1995-02-22|1998-10-16|Com Ind Maq Carton Ondulado|System for fixing rotary dies in laminar material stamping machines|
    ES2155334A1|1998-06-01|2001-05-01|Com Ind Maquinaria Carton Ondu|System for fixing rotary cutting dies in machines for die cutting laminar material|
    US20030066405A1|2001-10-05|2003-04-10|Harrison Frederick W.|Rotary cutting die mounting system|
    法律状态:
    2018-11-23| BA2A| Patent application published|Ref document number: 2691168 Country of ref document: ES Kind code of ref document: A1 Effective date: 20181123 |
    2020-02-21| FG2A| Definitive protection|Ref document number: 2691168 Country of ref document: ES Kind code of ref document: B2 Effective date: 20200221 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201830138A|ES2691168B2|2018-02-16|2018-02-16|SYSTEM FOR THE HOLDING OF TROQUELS IN MACHINES TROQUELADORAS DE LAMINAR MATERIAL|ES201830138A| ES2691168B2|2018-02-16|2018-02-16|SYSTEM FOR THE HOLDING OF TROQUELS IN MACHINES TROQUELADORAS DE LAMINAR MATERIAL|
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