WO2008103020A1

WO2008103020A1 - Punching press with interchangeable punch-holder and mould-holder

Info

Publication number: WO2008103020A1
Application number: PCT/MX2007/000018
Authority: WO
Inventors: Humberto Molina Ruiz; Gilberto Montalvo Zapata; David Alvarado Vargas; José Rafael VILLEGAS CLAUDIO
Original assignee: Metalsa Servicios, S. De R.L.
Priority date: 2007-02-23
Filing date: 2007-02-23
Publication date: 2008-08-28

Abstract

A punching press formed by a base structure which is substantially U-shaped, at least one hydraulic piston, at least one punch holder and at least one mould-holder; such that the punching press is defined in that the base structure supports, in at least one end thereof, one of the pistons which operates one of the punch-holders and in counterpart thereto one of the mould-holders is positioned; such that the punch-holders and mould-holders are fastened and separable from the base structure making the the punch-holders and mould-holders interchangeable for others of the same or different configuration.

Description

PUNCH PRESS WITH PORTA-PUNZONES AND PORTA-MATRICES

INTERCHANGEABLE

TECHNICAL FIELD OF THE INVENTION

The present invention relates to machines used to drill metal parts or other materials. Particularly it refers to a punch press whose structure allows to exchange punch holders and die holders jointly or individually for other punch holders or die holders of the same or different configuration.

BACKGROUND OF THE INVENTION

In industry in general, it is usual to practice drilling holes of different sizes and shapes in different metal parts or of any material.

These holes are made with the purpose that these metal parts can be subsequently used in additional processes, for example, in the automotive industry to assemble parts with other parts; for stamping door locks shields; to make openings in extruded hollow and elongated profiled bars such as those used in the building industry for the construction of door and window frames; etc.

To carry out such holes, presses-punchers are used

(colloquially called punching machines) manual, pneumatic or hydraulic existing in the market, according to the needs of the user, ranging from large machines, to small presses-punchers; from those that are fixed to a table to those that are portable presses-punchers. Examples of current puncture press solutions are found in the following patent documents.

Werner Erlenmaier, in US Pat. No. 4,951,375, describes a drilling machine with interchangeable punches and with advance of the work piece.

José Joaquín del Rey Montón, in the Spanish utility model publication ES-1058264, describes a portable hydraulic punch for the drilling of holes at the ends of profiles of various materials, which is essentially characterized by the fact that it comprises a structure or frame that can be displaced that includes a hydraulic motor pump, a removable manual puncture gun, the motor pump and the puncture gun being connected by an elongated and flexible conduit that provides the supply of electrical and hydraulic energy for the operation of the gun. Thanks to these characteristics, a portable, low-weight, easy-to-use puncher is obtained that can be placed in any desired area by the operator, since it makes it possible to use it with only one hand of the operator, in addition to the fact that it does not need a balancing weight or fixed supports.

Heinrich Gerdes and Alois Feldker, in the Spanish patent ES-2084420, describe a puncher, in which the work piece is housed in a support plate of a work table or similar support to be displaced in this place with respect to the tool, being able in this case to be stamped in the workpiece several openings or holes, one behind the other by means of at least one punch or male that in the vertical direction can be moved from top to bottom and which during and after the stamping process enters a corresponding cutout of a die, being constituted in this case between the punch or male and the die a cutting edge that cuts the opening or the hole of the work piece. The invention also relates to a process for drilling.

Asher Schusheim, in the Spanish patent ES-2240053, describes a puncture device for drilling openings in profile bars and method for puncturing. Where the present invention relates to the technique of drilling openings in a workpiece, and particularly to press devices for puncturing hollow and elongated profiled bars, mostly extruded aluminum bars such as those used in the industry of Ia edification.

Aizpurua Zendoia and Iñaki Xavier, in the Spanish patent ES-2246697, describe a punching machine comprising two superimposed rotating turrets, on which they respectively incorporate punching groups and die-holder groups, disposing devices for actuating said groups in Rotation of selection of the punches and working dies, the devices are incorporated in gyroscopic tilt mounting to establish coupling and decoupling of gears with respect to the punch-holder groups and the die-holder groups, respectively.

The state of the technique described above implies limitations in the press-punches, first of all it is observed that some of these press-punchers are designed for a single pattern of holes to be drilled, since their punch holders and die holders are found permanently fixed to the structure of the punch press. Therefore, they only allow drilling a pattern of holes and are limited to certain forms of pieces, since they only allow, in some cases, to exchange the punch or die for others, generally of the same configuration, when they are worn or need to be replaced . In Secondly, due to the position of the punch press, it only allows the holes in a work plane of the workpiece to be drilled. Thirdly, some punch presses are handled by the operators, which causes the holes not to be located in the indicated place. Finally, some punchers are very heavy machines or that require installations on fixed supports due to the size and considerable weight that hinder their movement by the operators

In view of the aforementioned and with the purpose of offering a solution to the limitations found in the current press-punches, it is necessary to provide a low-weight punch press that allows a large number of hole patterns to be made in any plane and that can Be supported and controlled by a robot. All this through the structural redesign of the base structure to allow the exchange of punch holders and die holders for others of the same or different configuration.

SUMMARY OF THE INVENTION

In view of the previously described and with the purpose of solving the limitations found, it is the object of the invention to offer a punch press, which comprises a base structure generally in the form of U, at least one piston, at least one carrier. punch and at least one die holder; such that the punch press is defined because the base structure supports, at least one of its ends, one of the pistons that drives one of the punch holders and against one of these is one of the holder holders; such that the punch holders and the die holders are fixed and detachable from the base structure that allows the punch holders and die holders to be interchangeable with others of the same or different configuration. BRIEF DESCRIPTION OF THE FIGURES

The characteristic details of the invention are described in the following paragraphs together with the accompanying figures, which are for the purpose of defining the invention but without limiting its scope.

Figure 1 shows a perspective view of a first embodiment of a punch press with punch holders and interchangeable die holders according to the invention.

Figure 2 shows a perspective view of a base structure used in a punch press with punch holders and interchangeable die holders of Figure 1 according to the invention.

Figures 3 shows a perspective view of a second embodiment of a punch press with punch holders and interchangeable die holders according to the invention.

Figure 4 shows a perspective view of an operation of the interchangeable punch-holder and die-holder set, and its punches and dies of Figure 3 according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

The term "interchangeable", in the context of the present description, means that two or more similar or different pieces in configuration belonging to objects manufactured for the same function can be used in any of them without modification.

With reference to Figure 1, a perspective view of a first embodiment of a punch press with punch holders and interchangeable die holders according to the invention is illustrated. The punch press 10 is formed by a generally U-shaped base structure 20, at least one piston 30, at least one punch holder 40, at least one plunger 80, and at least one die holder 50. The base structure 20 it supports, at least one of its ends, one of the pistons 30 that drives one of the punch holders 40, and against this part one of the holder holders 50 is located; where the punch holders 40 and the die holders 50 are fixed and detachable from the base structure 20 by at least one slot mechanism (not shown) that allows the punch holders 40 and the die holders 50 to be interchangeable. In turn, the punch holder 40 holds at least one punch not shown, while the die holder 50 holds at least one die not shown.

In an embodiment of the invention, independently, both the punch 40 and the die holder 50 can be exchanged, respectively, for another punch holder or die holder of the same or different configuration, that is, only to carry carry out the exchange separately of the punch holder or the die holder. On the other hand, in another embodiment of the invention, an assembly formed by a punch holder 40, a die holder 50 and their respective punches and dies represent a game that can be interchangeable by another set formed by the same or another holder configuration -punch, matrix holder, and its punches and dies.

The punch press 10 is constituted by a base structure 20 generally U-shaped, which is illustrated in detail in Figure 2, which is formed by at least two laminated structures. 90a and 90b generally U-shaped, substantially identical and on opposite sides, which are joined by at least one plate 100 located generally perpendicular to the laminated structures 90a and 90b. This type of base structure 20 allows the punch press 10 to have a weight much less than the weight of the current punch presses.

The base structure 20 inside contains at least one support for piston 60 and at least one support for die holder 70 which are attached to laminated structures 90a and 90b by means of bolts, screws or any other fastening element. These supports, apart from providing stability and rigidity to the base structure 20, make it possible to hold the components of the punch press 10 shown in Figure 1, such that the piston support 60 allows the piston 30 to be held, while the holder support - Matrix 70 allows to hold the matrix holder 50 through its slot mechanism 75 and in turn allow the matrix holder 50 can be removed to be exchanged for another matrix holder of the same or another configuration.

The base structure 20 can be arranged in any position that allows the hole in the metal part or object to be drilled, either horizontally or vertically or another angular position that facilitates the operation; In addition, its modular design structural design allows the exchange of punch 40 and die holder 50 and other components inside. The punch press 10 can be controlled or operated by a robot not shown, such that the base structure 20 is attached in its outer part to a support of structure 110, which in turn is subject to a flange 120, and this in turn, it is attached to a robot connector 130, which allows the punch press 10 to be carried and controlled by a robot. These items can go fastened by means of bolts, screws or any other fastening element that allows them to be secured together.

Returning to Figure 1, at least at one of the ends of the base structure 20 there is at least one of the pistons 30, which can be of any type, for example, manual, pneumatic or hydraulic, and can drill, In general, steel gauges less than 15 mm increasing the pressure. The main function of the piston 30 is to provide the pressure necessary to push and move the punch holder 40 linearly by means of its rod 140. The punch holder 40 is attached to the rod 140 of the piston 30 through its groove mechanism 85, which allows the punch holder 40 can in turn be removed to be exchanged for another punch holder of the same or another configuration. The punch holder 40 carries at least one punch (not shown) that will pierce the metal piece required by the hole, its end being housed in the hole of the die (not shown) located linearly opposite the punch holder 40. The The distance between the piston 30 and the punch holder 40 has been designed such that a precise and required vertical alignment of the hole and the punch is obtained (not shown). The piston 30 is attached by means of screws to the piston holder 60.

Once the metal part is perforated, the flow is reversed in the piston 30, in order to retract the rod 140 and the elements connected to it such as the punch holder 40 and the punches (not shown). The punches are generally fixed by means of oppressors and located in the punch holder 40 according to the needs of the piece to be drilled. The punch holder 40 also contains bushings or cylinders that allow the passage of guide rods through the punch holder 40, which allow the sliding, movement and alignment of the buttoner 80 at the time of drilling the holes in Ia metallic piece. The punch holder 40 and the die holder 50 being designed to be interchangeable individually or together, that is, the punch holder 40 and die holder 50 can be exchanged for another punch holder and die holder respectively, with another design configuration and location of the punches or dies respectively according to the needs of the piece to be drilled, it allows (without modifying the structure of the punch press 10) to drill a large number of hole patterns.

The individual or joint exchange of the punch holders 40 and the die holders 50 is quick and easy to maneuver because these can be fixed and separated from the base structure 20 by means of a slot mechanism that serves as guide supports for assembly and disassembly.

Once this operation of drilling the metal part has been carried out, a jam occurs between the punch (not shown) and the metal part when it is drilled, for this purpose the button 80 has the function of separating the metal part from the punch ( not shown) by means of nitrogen cylinders or springs (not shown) that eject the metal part once perforated. These nitrogen cylinders or springs are located in cylindrical gaps between the punch holder 40 and the plunger 80.

In contrast to the punch holder 40, the die holder 50 is located, the die (not shown) houses the punch (not shown) in its hole. The die holder 50 has been designed to carry at least one die (not shown), which is generally fixed by means of bolts and located in the die holder 50 according to the needs of the piece to be drilled. The die (not shown) is attached to the die holder by means of bolts, screws or any other Half clamping In the die holder 50 guide rods are held that pass through the bushing or cylinder of the punch holder 40. The guide bars allow the sliding, movement and alignment of the punch holder 40 at the time of drilling the holes in Ia metallic piece.

In an embodiment of the invention, the punch holder 40 and the die holder 50 in turn allow the punches or matrices they support respectively to be exchanged for other punches or dies with the same or different configuration.

Together with the previous one, the punch press 10 has diverter holes (not shown) that allow the waste material, product of the perforation, to exit through them and therefore not accumulate in the body of the punch press 10 .

A second embodiment of the punch press according to the invention is shown in Figures 3 and 4. Figure 3 illustrates the punch press in its assembled state, while Figure 4 illustrates an exploitation of the interchangeable punch-holder and die-holder set, and its punches and dies in this second embodiment. Here, the punch press 10 is formed by a generally U-shaped base structure 20, a piston 30, a punch holder 40, a die holder 50; such that the punch press 10 in the base structure 20 supports, at least one of its ends, the piston 30 that drives the punch holder 40 and against it is located the die holder 50; where the punch holder 40 and the die holder 50 are fixed and detachable from the base structure 20 which allows the punch holder 40 and the die holder 50 to be interchangeable. The matrix holder 50 is attached to the holder for matrix holder 70 by means of a slot mechanism 75, which allows the matrix holder 50 to be removed to be exchanged for another matrix holder of the same or another configuration. The die holder 50 carries at least one die 150.

The punch holder 40 is attached to the rod (not shown) of the piston 30 by means of a groove mechanism 85, which allows the punch holder 40 in turn to be removed to be exchanged for another punch holder thereof or other configuration The punch holder 40 carries at least one punch 160 that will pierce the metal part required by the hole, its end being housed in the hole of the die 150 located linearly opposite the punch holder 40.

Under this configuration, both the punch holder 40 and the die holder 50 can be exchanged, respectively, by another punch holder or die holder of the same or different configuration, that is, only carry out the separate exchange of the punch holder or the die holder or both at the same time considering these as a set formed by a punch holder 40, a die holder 50 and their respective punches 160 and dies 150 represent a set that can be interchangeable by another game formed by the same or another configuration of punch holder, die holder, and its punches and dies.

Based on the embodiments described above, it is contemplated that the modifications of the described realization environments, as well as the alternative realization environments will be considered evident to a person skilled in the art of the technique under the present description. It is therefore contemplated that the claims encompass such modifications and alternatives that are within the scope of the present invention or its equivalents.

Claims

1. A punch press comprising: a generally U-shaped base structure; at least one piston; at least one punch holder; and at least one matrix holder; wherein said punch press is characterized in that said base structure supports, at least one of its ends, one of said pistons that drives one of said punch holders and against one of them one of said holder holders is located; wherein said punch holders and said die holders are fixed and detachable from said base structure that allows said punch holders and die holders to be interchangeable, respectively, by other punch holders or die holders of the same or other configuration.

2. The punch press of claim 1, characterized in that said punch holder is fixed or separated from said piston by means of a groove mechanism.

3. The punch press of claim 1, characterized in that said die holder is fixed or separated from said base structure by means of a groove mechanism.

4. The punch press of claim 1, characterized in that said piston can be hydraulic, pneumatic or manual.

5. The punch press of claim 1, characterized in that said punch holder supports at least one punch.

6. The punch press of claim 1, characterized in that said die holder supports at least one die.

7. The punch press of claim 1, characterized in that it can be connected to a robot.

8. The puncture press of claim 1, characterized in that said base structure is formed by at least two opposite U-shaped laminated structures and joined by at least one reinforcing plate located generally perpendicular to said laminated structures.

9. The punch press of claim 1, characterized in that it also includes a button for each of said punch holders.