Forming stamping equipment

Abstract

A stamping apparatus (1) for forming a workpiece (100) comprises: a punch holder unit (2) and a die holder unit (12), the punch holder unit (2) comprising: an upper support body (3) rotatable about a working axis (X); a punch holder body (4) that accommodates the plurality of upper forming tools (31); and an upper striking element (5) movable parallel to the working axis (X) to selectively interact with a provided upper forming tool (31), the mould holder unit (12) comprising: a lower support body (13) rotatable about the working axis (X); a mold holder body (14) that accommodates the plurality of lower forming tools (32); and a lower striking element (15) that is linearly movable along the working axis (X) and rotatable about the working axis (X) to selectively interact with a set lower forming tool (32); the lower striking element (15) is linearly movable between a non-operative position (A), in which the lower striking element (15) is rotationally locked and not rotated with the lower support body (13), a first operative position (B), in which the lower striking element (15) is connected to the lower support body (13) for rotation therewith, and a second operative position (C), in which the lower striking element (15) is rotationally locked with the lower support body (13). In the second operating position (C), the lower striking element (15) partially urges the lower forming tool (32) to the outside of the mold holder body (14).

Description

Technical Field

[0001] The present invention relates to a machine tool for processing a workpiece and / or a metal sheet, and in particular to a forming punching device which can be associated with a punching machine for forming and / or deforming a workpiece. Background Art

[0002] As is known, a punching machine is provided with a punching device, called a punch head, which supports a tool acting on a workpiece, usually a metal sheet, and moves the tool linearly along a working axis to cooperate with a die or corresponding tool below. The die is usually fixed to the working surface of the punching machine that supports the workpiece.

[0003] The first type of punching tool includes a punch or a punch insert that can cut, shear, and punch a workpiece to form a hole, a slot, a through hole of various shapes or a separation contour, a split cut, or a punch or a punch insert that can form a deep-drawn part facing the work surface (i.e., downward). The corresponding die includes a cavity that is nearly complementary in shape to the corresponding punch to receive the punch when processing.

[0004] The second type of tools includes forming or deforming tools that are capable of plastically deforming a workpiece to form deep draws, bridges, slots, etc. of various shapes and sizes protruding from the opposite side (ie, upward) of the working surface.

[0005] The forming process can be static, so that the workpiece remains stationary during processing; or dynamic, so that the workpiece moves, usually used to form elongated deformations, such as steps, ribs, slits, etc. Since the deformation of the workpiece is opposite to the processing surface (upper forming), the mold includes a lower forming tool, the shape of which is complementary to that of the upper forming tool and can also be linearly moved in the opposite direction with the upper forming tool. The forming tool usually includes a wheel, roller or disc with a suitably shaped outer contour and can rotate around an axis orthogonal to the processing axis.

[0006] In a single-tool punch head, the tool is mounted on a support element called a spindle, which is driven linearly along the working axis and rotated around the working axis by a corresponding actuator. Linear motion in two opposite directions along the working axis allows the tool to perform a processing stroke and a return stroke during the punching process. Rotational motion around the working axis allows the punching tool to rotate and change the angular orientation (indexing) of the punching tool, thereby making different cuts or punches on the workpiece.

[0007] The multi-tool punch head includes a plurality of punching tools and a striking element, called a punch element, which moves linearly along a working axis and acts on a selected punching tool, thereby imparting to the punching tool the kinetic energy and linear motion required to perform workpiece processing.

[0008] The punching tool or punch is accommodated in a tool holder device, which is fixed to the punch and arranged between the punch element and the workpiece. The tool holder device usually includes a rotatable barrel, in which the tool is slidably accommodated and circumferentially arranged around the barrel rotation axis.

[0009] Each multi-tool punch head further comprises a multi-die provided with a plurality of dies, the number of the plurality of dies being equal to the number of corresponding punches, and the multi-die being rotatable about the working axis to allow for angular orientation of the punches.

[0010] However, known multi-tool punch heads cannot mount forming tools because the die cannot accommodate multiple lower forming tools, particularly because the die cannot move the tool along and around the working axis to select a lower forming tool, angularly orient the lower forming tool, and then lift the lower forming tool toward the upper forming tool to abut against the workpiece.

[0011] US2019 / 366411 discloses a set of punches and dies configured to perform forming processing on a sheet of material and a selection device. The selection device can be associated with a punch press to select the punches and dies that must be engaged by a striking element of the punch press, and force or allow unselected dies to move away from the sheet of material to avoid impact or damage to the sheet of material when it is processed. Summary of the invention

[0012] The object of the present invention is to improve known punching devices, in particular, to improve forming punching devices.

[0013] Another object is to achieve a punching device which is provided with a plurality of upper and lower forming tools which can be selected, angularly oriented and activated quickly and efficiently.

[0014] A further object is to achieve a punching device which allows a plurality of different forming or deforming operations to be optimally performed with the workpiece stationary or moving.

[0015] Another object is to provide a forming and stamping device with a simple and compact structure and a small size.

[0016] These and other objects are achieved by a punching device according to one or more of the accompanying claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The invention may be better understood and implemented with reference to the accompanying drawings, which show exemplary and non-limiting embodiments, in which:

[0018] - Figure 1 is a front view of a punch holder unit of a punching apparatus of the present invention;

[0019] - Figure 2 It is along Figure 1 A longitudinal sectional view taken along line II-II of , wherein the selected upper forming tool is in a retracted non-operating position;

[0020] - Figure 3 yes Figure 1 A perspective view of a punch holder unit;

[0021] - Figure 4 yes Figure 1 A bottom view of a punch holder unit;

[0022] - Figure 5 yes Figure 1 An exploded view of a punch holder unit;

[0023] - Figure 6 is a front view of a die holder unit of a stamping device of the present invention;

[0024] - Figure 7 It is along Figure 6 A longitudinal sectional view taken along line VII-VII of a die holder unit and a driving device of a punching device;

[0025] - Figure 8 yes Figure 6 A perspective view of a mold holder unit;

[0026] - Fig. 9 yes Figure 6 A top view of a mold holder unit;

[0027] - Fig.10 yes Figure 6 An exploded view of a mold holder unit;

[0028] - Fig.11 It is a longitudinal cross-sectional view of the punching apparatus of the present invention in relation to a workpiece.

[0029] - Figure 12 to Figure 14 2 is a longitudinal sectional view showing a lower striking element of a die holder unit of a punching apparatus of the present invention driven by a drive device in various different operating configurations. DETAILED DESCRIPTION

[0030] Reference Figures 1 to 14The punching device 1 according to the present invention is shown to be able to be associated with a punching machine of a known type and not shown and is arranged to perform forming and / or deforming processing on a workpiece 100. In particular, the punching device 1 is arranged to perform forming and / or deforming processing on a metal sheet.

[0031] like Fig.11 As shown in the cross-sectional view, the stamping equipment 1 includes: a punch holder unit 2, the punch holder unit 2 is provided with a plurality of, for example, three, upper forming tools or forming punches 31; and a die holder unit 12, the die holder unit 12 is provided with a plurality of lower forming tools or forming dies 32, and the number of the lower forming tools or forming dies 32 is, for example, equal to the number of the upper forming tools 31.

[0032] The punch holder unit 2 includes: an upper support body 3, which is rotatable about the working axis X; a punch holder body 4, which is rotatably connected to the upper support body 3 and is arranged to accommodate a plurality of upper forming tools 31 in a slidable manner; and an upper striking element 5. The upper striking element 5 is slidably supported by the upper support body 3 and is movable in a manner parallel to the working axis X to selectively interact with the upper forming tools 31 that have been set, thereby partially pushing the upper forming tools 31 to the outside of the punch holder body 4 to interact with the workpiece 100 below, as better explained in the following description.

[0033] The mold holder unit 12 includes a lower support body 13 rotatable about a working axis X, a mold holder body 14 fixed to the lower support body 13 and arranged to slidably accommodate a plurality of lower forming tools 32 , and a lower striking element 15 .

[0034] The lower striking element 15 is housed in the lower support body 13 and is linearly movable along the working axis X and rotatable around the working axis X to selectively interact with the lower forming tool that has been set. The lower striking element 15 is linearly movable between a non-operating position A, an operating position B, and a second operating position, in which the lower striking element 15 is rotationally locked by the first stopper 21 and does not rotate with the lower support body 13; in the operating position B, the lower striking element 15 is connected to the lower support body 13 via the second stopper 22, so as to rotate around the working axis X with the lower support body 13; in the second operating position C, the lower striking element 15 partially pushes the lower forming tool 32 that has been set outside the mold holder body 14 to interact with the workpiece 100 above.

[0035] With particular reference Figures 6 to 11The mold holder body 14 includes a plurality of lower seats 16, each of which is adapted to receive a lower tool holder element 34 associated with a corresponding lower forming tool 32. In particular, each lower tool holder element 34 includes: a first end 34a, the first end 34a is configured to receive and support the corresponding lower forming tool 32; and a second end 34b, the second end 34b is adapted to interact with the lower striking element 15.

[0036] In the embodiment shown, the lower forming tool 32 comprises a forming wheel or roller mounted on a respective lower tool holder element 34 and is rotatable about a respective first axis of rotation Y1 which is almost orthogonal to the working axis X.

[0037] The mold holder unit 12 further comprises a plurality of lower thrust elements 17 which are slidably connected to the mold holder body 14 and are arranged to support respective lower tool holding elements 34 of the lower forming tool 32. Each lower thrust element 17 can be abutted by the lower striking element 15 and moved along the working axis X, thereby moving the respective lower tool holder element 34 and, therefore, the respective lower forming tool 32, as better explained in the following description.

[0038] Each lower thrust element 17 has a generally prismatic shape and comprises two opposite and parallel abutment walls, in particular, the abutment walls are almost orthogonal to the working axis X, and the abutment walls are used to abut the second end 34b of the lower tool holder element 34 (to support the lower tool holder element and the lower deformation tool 32 associated with the lower tool holder element) and to be abutted by the lower striking element 15, respectively.

[0039] The lower striking element 15 is slidable within the cavity 23 of the lower supporting body 13 and has an almost cylindrical body 15 c.

[0040] The lower striking element 15 is slidably connected to the mold holder body 14 by a first guide pin 20 having a first upper end 20a fixed to the mold holder body 14 and a second lower end 20b slidably coupled to the seat 27 of the lower striking element 15. The first guide pin 20 is substantially coaxial with the working axis X.

[0041] The first elastic means 28 is arranged between the lower striking element 15 and the mold holder body 14 , and the first elastic means 28 is configured to elastically hold the lower striking element 15 spaced apart from the mold holder body 14 in the non-operating position A.

[0042] The first elastic means 28 comprise, for example, a respective cylindrical helical spring mounted on the first guide pin 20 .

[0043] The lower striking element 15 further comprises a first abutment portion 15 a extending from the body 15 c and configured to abut against a provided thrust element 17 to move the corresponding lower forming tool 32 .

[0044] The mold holder unit 12 includes a second elastic device 18, which is arranged between each lower thrust element 17 and the mold holder body 14, and the second elastic device 18 is configured to elastically keep the lower thrust element 17 and the mold holder body 14 spaced apart when the lower thrust element 17 is not abutted and pushed by the lower striking element 15 in the corresponding non-operating position E. Each lower thrust element 17 is slidably connected to the mold holder body 14 by one or more second guide pins 19, for example, two second guide pins 19, and the first elastic device 18 is mounted on the second guide pins 19, and the first elastic device 18 includes a corresponding cylindrical coil spring.

[0045] The first stop means 21 comprises a first projection configured to engage a longitudinal groove 24 formed on the outer wall of the lower striking element 14 , in particular parallel to the working axis X. The first projection 21 is for example connected to a support means 80 of a punching machine on which the die holder unit 12 is mounted.

[0046] The second stop means 22 comprises a second protrusion which is fixed to the second supporting body 13 and is configured to engage the longitudinal groove 24 of the lower striking element 15 .

[0047] The punching device 1 further comprises drive means 25 , 26 acting on the lower striking element 15 to move it linearly along the thrust direction F in the operating position B, C, in particular towards the punch holder unit 2 above.

[0048] In particular, the drive means 25 , 26 abut and act on a second abutment portion 15 b of the lower striking element 15 , which is opposite to the first abutment portion 15 a .

[0049] In the illustrated embodiment, the drive means 25, 26 include: a first linear actuator 25, which is suitable for moving the lower striking element 15 between the non-operating position A and the first operating position B; and a second linear actuator 26, which is suitable for moving the lower striking element 15 between the first operating position B and the second operating position C.

[0050] Alternatively, the drive means may comprise a single linear actuator capable of moving the lower striking element 15 between the inoperative position A and the first operative position B and between the first operative position B and the second operative position C in a controllable manner.

[0051] In particular, the drive means 25 , 26 may be integrated into a punching machine in which the punching device 1 is installed.

[0052] The die holder body 14 comprises an upper wall 14a adapted to abut and support the workpiece 100. A plurality of lower seats 16 are provided in the upper wall 14a, in which lower tool holder elements 34 associated with respective lower forming tools 32 are accommodated.

[0053] With particular reference Figures 1 to 6 The punch holder body 4 of the punch holder unit 2 comprises a plurality of upper seats 6, each of which is adapted to receive a corresponding upper thrust element 7 and an upper tool holder element 33 associated with a corresponding upper forming tool 31. Each upper thrust element 7 is arranged between an upper striking element 5 and a corresponding upper tool holder element 33.

[0054] In particular, each upper thrust element 7 includes an abutment end 7 a configured to interact with a corresponding striking portion 5 a of the upper striking element 5 and a connection end 7 b coupled to the upper tool holder element 33 .

[0055] Each upper thrust element 7 is slidably engaged in a first guide portion 6 a of a corresponding upper seat 6 , while an upper tool holder element 33 connected to the upper thrust element 7 is slidably engaged in a second guide portion 6 b located below in the upper seat 6 .

[0056] The upper thrust element 7 comprises an upper portion 70 comprising an abutment end 7a having an almost cylindrical pin shape and a lower portion 71 comprising a connection end 7b having a prismatic shape. The cylindrical wall of the upper portion 71 has a longitudinal flat portion 70c which prevents the upper thrust element 7 from rotating around its longitudinal axis inside the first guide portion 6a of the corresponding upper seat 6.

[0057] In the embodiment shown, the upper forming tool 31 comprises a respective wheel or a formed roller or disc which is mounted on an upper tool holder element 33 and can rotate idly about a respective second axis of rotation Y2 which is almost orthogonal to the working axis X.

[0058] The punch holder unit 2 includes a closing disk 35 which is fixed to a lower portion of the punch holder body 4 and is provided with a through hole 35 a that allows the upper forming tool 31 to exit.

[0059] The punch holder unit 2 further comprises an abutment element 8 which is slidably connected to the upper support body 3 and to which the upper striking element 5 is fixed. The abutment element 8 is configured to interact with a ram element of a known type of a punching machine on which the punching device 1 is mounted.

[0060] The abutment element 8 is slidably connected to the upper support body 3 by means of one or more, for example four, third guide pins 39 on which third elastic means 38 comprising respective cylindrical helical springs are mounted.

[0061] The third elastic device 38 is arranged between the abutment element 8 and the upper support body 3, and the third elastic device 38 is constructed so that: when the third elastic device 38 is not pushed by the pressure head element of the punching machine, in the corresponding non-operating position G, the third elastic device 38 elastically keeps the abutment element 8 and the upper support body 3 spaced apart.

[0062] The upper supporting body 3 also comprises a through-seat 9 suitable for receiving and movably guiding an upper striking element 5 having, for example, the shape of a cylindrical pin.

[0063] The operation of the forming stamping equipment 1 of the present invention includes: in an initial step, selecting an upper forming tool 31 and a lower forming tool 32 to perform the desired forming or deforming processing on a workpiece 100, such as a metal plate, which is positioned on the upper wall 14a of the mold holder body element 14 of the mold holder unit 12.

[0064] In order to select, for example, the upper forming tool 31, the upper support body 3 is rotated relative to the punch holder body 4 which remains stationary about the working axis X, so that the upper striking element 5 is aligned with and superposed on the selected upper forming tool 31. More precisely, after the selection, the corresponding striking portion 5a of the upper striking element 5 faces the abutment end 7a of the upper thrust element 7 connected to the upper tool holder element 33, which accommodates and supports the selected upper forming tool 31.

[0065] Alternatively, the punch holder body 4 may be rotated about the working axis X relative to the upper support body 3 which remains stationary.

[0066] The upper support body 3 or the punch holder body 4 are rotated relative to each other about the working axis X by suitable first drive means of the punching machine on which the inventive punching device 1 is mounted, which are of known type and will not be described in detail.

[0067] The entire punch holder unit 2 can be rotated about the working axis X for the angular orientation (indexing) of the upper forming tool 31 relative to the working axis.

[0068] The punch holder unit 2 is rotated about the working axis X by suitable second drive means of the punching machine, which are of known type and will not be described in detail.

[0069] In order to select the lower forming tool 32 complementary to the selected upper forming tool 31, the lower support body 13 is rotated about the working axis X, and the mold holder body 14 is rotated accordingly, while the lower striking element 15 is kept stationary in the inoperative position A by the first protrusion 21 engaged in the longitudinal groove 24. In this way, it is possible to align the desired lower forming tool 32 with the corresponding striking portion 15a of the lower striking element 15 and to superimpose the lower forming tool 32 onto the corresponding striking portion 15a of the lower striking element 15. More precisely, after selection, the striking portion 15a of the lower striking element 15 faces the lower thrust element 17 supporting the lower tool holder element 34, which accommodates and supports the selected lower forming tool 32 ( Fig.12 ).

[0070] The lower supporting body 13 is rotated about the working axis X by suitable third drive means of the punching machine, which are of known type and will not be described in detail.

[0071] In order to orient (index) the lower forming tool 32 angularly relative to the working axis X according to the selected angular orientation of the upper forming tool 31, in a first step, the lower striking element 15 is moved from the inoperative position A to the first operative position B ( Fig.13 ). More precisely, the first linear actuator 25 is driven to raise the lower striking element 15, thereby disengaging the first stopper 21 (first protrusion) from the longitudinal groove 24 and engaging the second stopper 22 (second protrusion 22) with the longitudinal groove 24. Thus, the lower striking element 15 is coupled to the lower support body 13 and rotates integrally.

[0072] In a second step, the lower support body 13 together with the mold holder body 14 and the lower striking element 15 is rotated about the working axis X in order to orient the selected lower forming tool 32 .

[0073] Then, the forming and / or deforming process of the workpiece 100 may be continued by simultaneously moving the upper forming tool 31 and the lower forming tool 32 toward each other along the working axis X.

[0074] To this end, the upper striking element 5 is moved (for example, by a pulse motion) by the ram element (not shown) of the punch press to impact and move the thrust element 7, and thereby impact and move the punch holder element 33 connected to the thrust element 7 and supporting the selected upper forming tool 31, thereby partially moving the upper forming tool 31 away from the punch holder body 4 and interacting with the workpiece 100.

[0075] Similarly, the lower striking element 15 is moved from the first operating position B to the second operating position C by the drive means 25, 26. Fig.14 ) (e.g. also by a pulse motion). More precisely, the second linear actuator 26 is driven to raise the lower striking element 15 further so that the corresponding striking portion 15a abuts against and pushes upwards the lower thrust element 17 supporting the lower tool holder element 34, which in turn supports the selected lower forming tool 32. As a result, the lower forming tool is partially separated from the mold holder body 14 to interact with the workpiece 100.

[0076] It should be noted that the upper forming tool 31 and the lower forming tool 3132 (punch and forming die) can act on the workpiece 100 which remains stationary, for example, to form deep-drawn parts of different shapes and sizes, such as upwardly protruding bridge-like parts, slits, etc., or by moving the workpiece in two directions (i.e., horizontal directions) orthogonal to the working axis X to form elongated deformed parts protruding upward, such as step-like parts, rib-like parts, slits, etc.

[0077] Thanks to the punching device 1 of the present invention, a plurality of different forming and / or deforming processes can be optimally performed on the workpiece 100 using a plurality of upper forming tools 31 and a plurality of lower forming tools 32 without having to stop the press machine on which the punching device 1 is installed to change the tools.

[0078] In particular, the stamping equipment 1 of the present invention can quickly and accurately select and angularly orient the two upper forming tools and the lower forming tools required to perform a specific forming process, in particular, select from a plurality of upper forming tools 31 and a plurality of lower forming tools 32 respectively installed on the punch holder unit 2 and the die holder unit 12.

[0079] The punching device 1 also allows a variety of different forming or deforming operations to be performed, wherein the workpiece 10 is stationary or moved in two mutually orthogonal and substantially horizontal directions.

[0080] The punching apparatus 1 includes a punch holder unit 2 and a die holder unit 12 having a simple and compact structure and a small size.

[0081] The invention also relates to a punching machine comprising at least one punching machine as described above and Figures 1 to 14 The punching device 1 of the present invention is shown in FIG.

Claims

1. A stamping device (1), the stamping device (1) being used for forming and / or deforming a workpiece (100) and being capable of being associated with a stamping machine, the stamping device (1) include: - a punch holder unit (2), the punch holder unit (2) comprising: an upper support body (3), the upper support body (3) being rotatable around a working axis (X); a punch holder body (4), the punch holder body (4) being rotatably connected to the upper support body (3), and the punch holder body (4) being arranged to accommodate a plurality of upper forming tools (31) in a slidable manner; and an upper striking element (5), the upper striking element (5) being slidably supported by the upper support body (3) and being movable in a manner parallel to the working axis (X) so as to selectively interact with an already arranged upper forming tool (31), thereby partially pushing the upper forming tool to the outside of the punch holder body (4) so ​​as to interact with the workpiece (100); - A mold holder unit (12), the mold holder unit (12) comprising: a lower support body (13), the lower support body (13) being rotatable around the working axis (X); a mold holder body (14), the mold holder body (14) being fixed to the lower support body (13) and being arranged to accommodate a plurality of lower forming tools (32) in a slidable manner; and a lower striking element (15), the lower striking element (15) being accommodated in the lower support body (13) and being able to move linearly along the working axis (X) and being able to rotate around the working axis (X) to selectively interact with the set lower forming tools (32); the lower striking element (15) being able to The lower striking element (15) is linearly moved between an operating position (A), a first operating position (B) and a second operating position (C), wherein in the non-operating position (A), the lower striking element (15) is rotationally locked by a first stop device (21) and does not rotate together with the lower support body (13), in the first operating position (B), the lower striking element (15) is connected to the lower support body (13) via a second stop device (22) so as to rotate together with the lower support body around the working axis (X), and in the second operating position (C), the lower striking element (15) partially pushes the already set lower forming tool (32) to the outside of the mold holder body (14) to interact with the workpiece (100).

2. The punching device (1) according to claim 1, in, The mold holder body (14) includes a plurality of lower seats (16), each of which is adapted to receive a lower tool holder element (34) associated with a corresponding lower forming tool (32), the lower tool holder element (34) including a first end (34a) and a second end (34b), the first end (34a) being configured to receive and support the corresponding lower forming tool (32), the second end (34b) being adapted to interact with the lower striking element (15).

3. The punching device (1) according to claim 1 or 2, in, The lower striking element (15) is slidably connected to the mold holder body (14) by means of a first guide pin (20), the first guide pin (20) having a first upper end (20a) and a second lower end (20b), the first upper end (20a) being fixed to the mold holder body (14), and the second lower end (20b) being slidably connected to the seat (27) of the lower striking element (15), in particular, the first guide pin (20) is substantially coaxial with the working axis (X).

4. According to the stamping device (1) of any preceding claim, the stamping device (1) includes a first elastic device (28), which is arranged between the lower striking element (15) and the mold holder body (14), and the first elastic device (28) is configured to elastically maintain the lower striking element (15) spaced apart from the mold holder body (14) in the non-operating position (A).

5. A stamping device (1) according to any preceding claim, in, The mold holder unit (12) includes a plurality of lower thrust elements (17), which are slidably connected to the mold holder body (14), and are arranged to support the corresponding lower tool holder elements (34) of the lower forming tool (32), wherein each lower thrust element (17) can be abutted by the lower striking element (15) and can be moved along the working axis (X) to move the corresponding lower tool holder element (34) and the associated lower forming tool (32).

6. The punching device (1) according to claim 5, in, The mold retainer unit (12) includes a second elastic device (18), which is arranged between each lower thrust element (17) and the mold retainer body (14), and the second elastic device (18) is configured to: in the corresponding non-operating position (E), when the lower thrust element is not abutted and pushed by the lower striking element (15), the second elastic device (18) elastically maintains the lower thrust element (17) to be spaced apart from the mold retainer body (14).

7. A stamping device (1) according to any preceding claim, in, The first stop means (21) comprises a first protrusion, which is configured to engage a longitudinal groove (24) formed on the outer wall of the lower striking element (15), in particular, the longitudinal groove (24) is parallel to the working axis (X), and wherein the second stop means (22) comprises a second protrusion, which is fixed to the second supporting body (13) and is configured to engage the longitudinal groove (24).

8. A stamping device (1) according to any of the preceding claims, comprising a drive device (25, 26) which acts on the lower striking element (15) to move the lower striking element (15) linearly in the operating position (B, C) along the thrust direction (F).

9. The punching device (1) according to claim 8, in, The drive device (25, 26) comprises: a first linear actuator (25), the first linear actuator (25) being suitable for moving the lower striking element (15) between the non-operating position (A) and the first operating position (B); and a second linear actuator (26), the second linear actuator (26) being suitable for moving the lower striking element (15) between the first operating position (B) and the second operating position (C).

10. The punching device (1) according to claim 1, in, The mold holder body (14) includes an upper wall (14a) suitable for abutting and supporting the workpiece (100), wherein a plurality of lower seats (16) are arranged in the upper wall (14a), each of the lower seats being suitable for receiving a lower tool holder element (34) associated with a corresponding lower forming tool (32).

11. A stamping device (1) according to any preceding claim, in, The punch holder body (4) includes a plurality of upper seats (6), each of which is suitable for receiving a corresponding upper thrust element (7) and an upper tool holder element (33) associated with a corresponding upper forming tool (31), and the upper thrust element (7) is arranged between the upper striking element (5) and the upper tool holder element (33).

12. The punching device (1) according to claim 11, in, Each upper thrust element (7) comprises an abutment end (7a) configured to interact with a corresponding striking portion (5a) of the upper striking element (5) and a connection end (7b) coupled to the upper tool holder element (33).

13. A stamping device (1) according to any preceding claim, in, The punch holder unit (2) comprises an abutment element (8), which is slidably connected to the upper support body (3), and the upper striking element (5) is fixed to the abutment element (8), in particular, the abutment element (8) is configured to interact with the punch element of the punching machine.

14. A stamping device (1) according to any preceding claim, in, The upper support body (3) comprises a through seat (9) which is suitable for receiving the upper striking element (5) and for guiding the upper striking element (5) in a slidable manner.

15. A punching machine comprising a punching device (1) according to any preceding claim.

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