Stamping device for hardware machining

Abstract

A stamping device for hardware machining relates to the field of hardware stamping machining and comprises a stamping mechanism, the stamping mechanism comprises an upper pressing plate, two supporting plates and a lower pressing plate, the lower pressing plate is arranged under the upper pressing plate in an up-down moving mode, the two supporting plates are symmetrically arranged on the two sides of the lower pressing plate, the two supporting plates are connected in a hinged mode, and the lower pressing plate is arranged under the upper pressing plate. An upper bottom plate for driving the lower pressing plate and the two supporting plates to move up and down synchronously is arranged at the bottom of the lower pressing plate, a bending hydraulic rod for driving the supporting plates to conduct bending movement is arranged on the upper surface of the upper bottom plate, and a stamping hydraulic rod for driving the upper bottom plate to move up and down is arranged at the bottom of the upper bottom plate. The hardware stamping part is lifted and bent through the two supporting plates capable of being bent upwards, the upper surface of the part, needing to be bent, of the hardware stamping part is supported and fixed through the upper pressing plate, then the stamping part is finally bent through the supporting plates, and bending deformation of the two bent sides of the stamping part is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of hardware stamping processing, and in particular to a stamping device for hardware processing. Background Art

[0002] Hardware stamping is an important and widely used manufacturing process in the field of metal processing. It plays a pivotal role in modern industrial production. In the early days of industrial development, manual manufacturing was the main way to produce hardware. However, this method is not only inefficient, but also difficult to guarantee product quality and precision, and cannot meet the needs of large-scale production and high-precision hardware. With the advancement of science and technology and the development of manufacturing, stamping technology has emerged. Stamping is a process in which the die applies external force to plates, strips, pipes and profiles on the press to cause plastic deformation or separation, thereby obtaining workpieces of the required shape and size. This processing method has significant advantages such as high production efficiency, high material utilization rate and stable product quality. Hardware stamping technology is constantly improving and perfecting. From simple single punch dies to compound dies and progressive dies, the die structure is becoming more and more complex, which can achieve more complex shapes and high-precision hardware production. At the same time, stamping equipment is also constantly being updated, from traditional mechanical presses to hydraulic presses, servo presses, etc., and the performance and precision of the equipment have been greatly improved. In terms of materials, various new metal materials with high strength and high toughness continue to emerge, providing a wider range of choices for hardware stamping processing. In addition, the integration of computer technology and automation technology makes the design, simulation and control of the stamping process more precise and intelligent.

[0003] However, the current metal stamping process still faces some challenges. Fig. 9 As shown, in the past, the stamping part 7 was often placed on the top of the die 8 during the bending process, and then the stamping part 7 was squeezed and fitted inside the die 8 by applying pressure to the upper die plate 6 to achieve the purpose of shaping. However, this bending method causes the stamping part 7 to be scratched and worn against the surface of the die 8 during bending, and the die 8 is prone to surface deformation. In addition, this stamping method causes the stamping part 7 to be bent in advance during the continuous entry into the die. After stamping, the side wall of the stamping part 7 will bend due to insufficient squeezing between the die 8 and the upper die plate 6, forming a shape as shown in the figure. Fig.10 As shown, the side wall of the stamping part 7 needs to be corrected later, resulting in an increase in the defective rate of the stamping part. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the first object of the present invention is to provide a stamping device for hardware processing to reduce the bending deformation on both sides of the stamping part.

[0006] To achieve the above-mentioned purpose, the present invention proposes a stamping device for hardware processing, including a stamping mechanism, wherein the stamping mechanism includes an upper pressing plate, a supporting plate and a lower pressing plate, wherein the lower pressing plate is movably arranged directly below the upper pressing plate, two supporting plates are provided, and the two supporting plates are symmetrically arranged on both sides of the lower pressing plate, and the two supporting plates are hingedly connected to each other, and an upper base plate for driving the lower pressing plate and the two supporting plates to move up and down synchronously is provided at the bottom of the lower pressing plate, a bending hydraulic rod for driving the supporting plate to bend is provided on the upper surface of the upper base plate, and a stamping hydraulic rod for driving the upper base plate to move up and down is provided at the bottom of the upper base plate.

[0007] In addition, the punching device for hardware processing according to the present invention may also have the following additional technical features: Furthermore, discharge electrodes are provided at both ends of the top of the lower pressing plate, and the discharge electrodes can be elastically and telescopically arranged on the top of the lower pressing plate. An insulating plate is provided between the two discharge electrodes. The opposite ends of the upper pressing plate and the lower pressing plate are both wedge-shaped structures, and the upper end of the lower pressing plate is hinged on the same straight line with the bottom of the two support plates.

[0008] Furthermore, the bending hydraulic rod and the stamping hydraulic rod are both piston-type hydraulic rods, the piston lower cylinder of the bending hydraulic rod is connected to the piston upper cylinder of the stamping hydraulic rod through a hydraulic pipeline, and a two-way pressure-limiting valve is arranged between the piston lower cylinder of the bending hydraulic rod and the piston upper cylinder of the stamping hydraulic rod.

[0009] Furthermore, both ends of the lower pressure plate are provided with a pallet support assembly, and the pallet support assembly includes a hinge shaft and a pallet bracket, wherein the two lower pressure plates are hinged to each other through the hinge shaft, the pallet bracket is arranged at the bottom of the hinge shaft, and the bottom of the pallet bracket is connected to the upper base plate.

[0010] Furthermore, both ends of the bending hydraulic rod are respectively hinged to the opposite surfaces of the upper base plate and the supporting plate, and a plurality of the bending hydraulic rods are provided, and the plurality of bending hydraulic rods telescope synchronously.

[0011] Furthermore, it also includes a lubrication mechanism, which includes a first nozzle, a second nozzle and an oil pump, wherein the first nozzle is arranged on both sides of the upper pressure plate, the second nozzle is arranged on the upper surface of the support plate, and the first nozzle and the second nozzle are connected to the oil outlet end of the oil pump.

[0012] Furthermore, a suspension bridge assembly is arranged above the upper pressure plate, and the suspension bridge assembly includes a suspension bridge bracket and a cross beam, the cross beam is arranged on the top of the upper pressure plate, the suspension bridge bracket is arranged at both ends of the cross beam, and a lower base plate is arranged at the bottom of the suspension bridge bracket.

[0013] Furthermore, a first guide groove is provided in the middle position of the upper surface of the upper base plate, a through groove is provided at the bottom of the first guide groove, a second guide groove is provided in the middle position of the upper surface of the lower base plate, a filter is provided at the top of the second guide groove, a reflux oil tank is provided at the bottom of the second guide groove, and the reflux oil tank is connected to the oil inlet end of the oil pump.

[0014] Furthermore, the outlet of the first nozzle faces the side of the upper pressure plate, and a plurality of the second nozzles are arranged, and the plurality of nozzles are distributed in an array on the upper surface of the support plate. The bottom of the second nozzles is connected to a diverter through a branch pipe, and the oil inlet end of the diverter is connected to the oil outlet end of the reflux oil tank.

[0015] Furthermore, a mounting plate is provided on the top of the upper pressure plate, and the mounting plate is slidably arranged at the bottom of the beam, a guide rod is provided between the mounting plate and the beam, and a spring is provided between the mounting plate and the beam.

[0016] Beneficial effect: The present invention lifts and bends the metal stamping parts by two upwardly bendable support plates, supports and fixes the upper surface of the metal stamping parts that need to be bent by the upper pressure plate, and then the support plates perform the final bending on the stamping parts, thereby reducing the bending deformation on both sides of the stamping parts.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 A schematic structural diagram of a punching device for processing hardware according to an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a stamping mechanism in a stamping device for processing hardware according to an embodiment of the present invention; Figure 3 It is a partial front cross-sectional view of a punching device for processing hardware according to one embodiment of the present invention; Figure 4 for Figure 3 A magnified view of middle; Figure 5 It is a partial front cross-sectional view of a punching mechanism in a punching device for processing hardware according to one embodiment of the present invention; Figure 6 A partial front cross-sectional view of a support plate in a punching device for processing hardware according to an embodiment of the present invention; Figure 7 A partial right side cross-sectional view of a punching device for processing hardware according to an embodiment of the present invention; Figure 8 A schematic diagram of the structure of a lower pressing plate in a punching device for processing hardware according to an embodiment of the present invention; Fig. 9 It is a stamping principle diagram of metal stamping parts in the prior art; Fig.10 It is a schematic diagram of the product structure of metal stamping parts in the prior art.

[0019] As shown in the figure: 1. Suspension bridge assembly; 11. Suspension bridge bracket; 12. Crossbeam; 2. Stamping mechanism; 21. Upper pressure plate; 211. Mounting plate; 212. Guide rod; 213. Spring; 22. Support plate; 23. Bending hydraulic rod; 24. Support plate support assembly; 241. Support plate bracket; 242. Hinge shaft; 25. Upper base plate; 251. First guide groove; 252. Through groove; 26. Lower pressure plate; 261. Discharge electrode; 262. Insulating plate; 3. Lower base plate; 31. Second guide groove; 32. Filter; 4. Stamping hydraulic rod; 5. Lubricating mechanism; 51. First nozzle; 52. Second nozzle; 53. Oil pump; 54. Diverter; 55. Return oil tank. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limitations of the present invention. On the contrary, embodiments of the present invention include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0021] The punching device for processing hardware according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0022] like Figure 1-Figure 3 As shown, the stamping device for hardware processing provided by the embodiment of the present invention includes a stamping mechanism 2, and the stamping mechanism 2 includes an upper pressing plate 21, a supporting plate 22 and a lower pressing plate 26, wherein the lower pressing plate 26 is movably arranged directly below the upper pressing plate 21, and two supporting plates 22 are provided. The two supporting plates 22 are symmetrically arranged on both sides of the lower pressing plate 26, and the two supporting plates 22 are hingedly connected to each other. The bottom of the lower pressing plate 26 is provided with an upper base plate 25 for driving the lower pressing plate 26 and the two supporting plates 22 to move up and down synchronously, and the upper surface of the upper base plate 25 is provided with a bending hydraulic rod 23 for driving the supporting plate 22 to bend, and the bottom of the upper base plate 25 is provided with a stamping hydraulic rod 4 for driving the upper base plate 25 to move up and down.

[0023] Specifically, when stamping the hardware stamping sheet, the stamping hydraulic rod 4 under the upper base plate 25 is first retracted to drive the upper base plate 25 and the support plate 22 to move downward together. At this time, a filling gap is formed between the support plate 22 and the upper pressure plate 21. The stamping sheet is placed on the support plate 22, and the position of the stamping sheet is adjusted. Then the hydraulic rod is controlled to retract and extend to drive the support plate 22 to move upward until the stamping sheet on the support plate 22 contacts the upper base plate 25. The stamping hydraulic rod 4 stops retracting and extending, and the bending hydraulic rod 23 is extended. The bending hydraulic rod 23 drives the two support plates 22 to fold upward along the lower pressure plate 26, and then the stamping sheet is bent upward along the upper pressure plate 21. During the bending process, the upper pressure plate 21 and the lower pressure plate 26 clamp the bending part of the stamping sheet to prevent displacement of the stamping sheet during the bending process.

[0024] In one embodiment of the present invention, Figure 7 As shown, discharge electrodes 261 are provided at both ends of the top of the lower pressing plate 26, and the discharge electrodes 261 are elastically and telescopically provided at the top of the lower pressing plate 26, and an insulating plate 262 is provided between the two discharge electrodes 261. The opposite ends of the upper pressing plate 21 and the lower pressing plate 26 are both wedge-shaped structures, and the upper end of the lower pressing plate 26 and the bottom hinges of the two supporting plates 22 are in the same straight line.

[0025] Specifically, during the process of bending the stamped sheet by the support plate 22, in order to make the deformation force at the bending point smaller and reduce the metal fatigue and cracks caused by the bending process of the stamped sheet, after the upper pressing plate 21 and the lower pressing plate 26 clamp the stamped sheet, current is passed through the two discharge electrodes 261. The current passes through the bent part of the stamped sheet, and the bent part is heated and softened, making it easier to bend, and reducing the metal fatigue caused by the bending process of the stamped sheet.

[0026] Since the discharge electrode 261 can be elastically and telescopically arranged on the top of the lower pressure plate 26, the discharge electrode 261 is in elastic contact with the stamping plate, reducing the hard contact damage between the discharge electrode 261 and the stamping plate. An insulating plate 262 is arranged between the two discharge electrodes 261. The insulating plate 262 can be made of a zirconia ceramic plate, which can insulate the two discharge electrodes 261 while effectively supporting the stamping plate.

[0027] In one embodiment of the present invention, Figure 3 As shown, a pallet support assembly 24 is provided at both ends of the lower pressure plate 26, and the pallet support assembly 24 includes a hinge shaft 242 and a pallet bracket 241, wherein the two lower pressure plates 26 are hinged to each other through the hinge shaft 242, the pallet bracket 241 is arranged at the bottom of the hinge shaft 242, and the bottom of the pallet bracket 241 is connected to the upper base plate 25.

[0028] Specifically, the hinge shaft 242 and the support plate bracket 241 are used to support the support plate 22 to flip up and down along the hinge shaft 242, and enable the top of the lower pressing plate 26 to always be located at the hinge shaft 242, so that the lower pressing plate 26 can support the bottom of the stamping plate.

[0029] In one embodiment of the present invention, Figure 3 As shown, the two ends of the bending hydraulic rod 23 are respectively hinged to the opposite surfaces of the upper base plate 25 and the support plate 22, and a plurality of bending hydraulic rods 23 are provided. The plurality of bending hydraulic rods 23 move synchronously and are symmetrically distributed on the outer sides of the two support plates 22, so that the two support plates 22 are folded up and down synchronously.

[0030] In one embodiment of the present invention, Figure 5-7 As shown, the lubricating mechanism 5 is also included, and the lubricating mechanism 5 includes a first nozzle 51, a second nozzle 52 and an oil pump 53, wherein the first nozzle 51 is arranged on both sides of the upper plate 21, and the second nozzle 52 is arranged on the upper surface of the support plate 22, and the first nozzle 51 and the second nozzle 52 are connected to the oil outlet of the oil pump 53. The outlet of the first nozzle 51 faces the side of the upper plate 21, and a plurality of second nozzles 52 are arranged, and the plurality of nozzles are distributed in an array on the upper surface of the support plate 22. The bottom of the second nozzle 52 is connected to a diverter 54 through a branch pipe, which is used to evenly transmit the lubricating oil to each second nozzle 52, and the oil inlet end of the diverter 54 is connected to the oil outlet end of the return oil tank 55.

[0031] Specifically, during the process of bending and stamping the stamped sheet, the oil pump 53 is energized to transfer the lubricating oil to the first nozzle 51 and the second nozzle 52. The first nozzle 51 sprays the lubricating oil onto the support plate 22 to reduce friction damage between the stamped sheet and the support plate 22 during the bending process.

[0032] By cooperating with the above-mentioned embodiment to heat the bending part of the stamped sheet, after the bending part is heated and bent, the second nozzle 52 sprays the lubricating oil onto the upper pressing plate 21, and the lubricating oil flows downward along the upper pressing plate 21 to the bending part of the stamped sheet, and the bending part is quenched to make the bending part cooler and harder. It can be understood that the lubricating oil uses a low-conductivity lubricating oil, and the lubricating oil has an extremely low conductivity, so it will not affect the discharge process of the discharge electrode 261.

[0033] In one embodiment of the present invention, Figure 2 As shown, a suspension bridge assembly 1 is arranged above the upper pressure plate 21, and the suspension bridge assembly 1 includes a suspension bridge bracket 11 and a cross beam 12. The cross beam 12 is arranged on the top of the upper pressure plate 21, and the suspension bridge bracket 11 is arranged at both ends of the cross beam 12. A lower base plate 3 is arranged at the bottom of the suspension bridge bracket 11. The suspension bridge bracket 11 and the cross beam 12 are used to fix and support the upper pressure plate 21, and the lower base plate 3 is used to stably support the entire device.

[0034] In one embodiment of the present invention, Figure 3 and Figure 6 As shown, a first guide groove 251 is provided in the middle position of the upper surface of the upper base plate 25, a through groove 252 is provided at the bottom of the first guide groove 251, a second guide groove 31 is provided in the middle position of the upper surface of the lower base plate 3, a filter screen 32 is provided at the top of the second guide groove 31, a reflux oil tank 55 is provided at the bottom of the second guide groove 31, and the reflux oil tank 55 is connected to the oil inlet end of the oil pump 53.

[0035] Specifically, in the process of the lubricating oil flowing downward, the lubricating oil flows downward through the support plate 22 to the first guide groove 251, continues to flow downward through the through groove 252 at the bottom of the first guide groove 251 to the second guide groove 31, is filtered through the filter screen 32 at the top of the second guide groove 31 to remove the residue in the lubricating oil, and the filtered lubricating oil finally flows into the reflux oil tank 55 and is supplied to the oil pump 53 through the pipeline for reuse.

[0036] In one embodiment of the present invention, Figure 3 and Figure 6 As shown, a mounting plate 211 is arranged on the top of the upper pressure plate 21, and the mounting plate 211 is slidably arranged on the bottom of the beam 12, a guide rod 212 is arranged between the mounting plate 211 and the beam 12, and a spring 213 is arranged between the mounting plate 211 and the beam 12.

[0037] Specifically, in the process of the support plate 22 driving the stamping plate to rise, at the moment when the stamping plate contacts the upper pressing plate 21, due to the upward rebound effect of the upper pressing plate 21, the upper pressing plate 21 will not be hard squeezed with the stamping plate, thereby preventing the upper pressing plate 21 from suddenly applying force to the stamping plate to cause the stamping plate to crack or jump out. Until the upper pressing plate 21 rises to the top, the stamping hydraulic rod 4 stops moving, and then the bending hydraulic rod 23 bends the stamping plate.

[0038] In order to clearly explain the above embodiments, refer to Figure 1-Figure 10 The specific working principle of the punching device for hardware processing of the present invention is as follows: In the process of bending and stamping the hardware stamping sheet, the stamping hydraulic rod 4 under the upper base plate 25 is first retracted, and the stamping hydraulic rod 4 drives the upper base plate 25 and the support plate 22 to move downward together. At this time, a filling gap is formed between the support plate 22 and the upper pressure plate 21. At this time, the stamping sheet is placed on the support plate 22, and the position of the stamping sheet is adjusted. Then the hydraulic rod is controlled to retract and extend to drive the support plate 22 to move upward until the stamping sheet on the support plate 22 contacts the upper base plate 25. The stamping hydraulic rod 4 stops retracting and controlling the bending hydraulic rod 23 to extend. The bending hydraulic rod 23 drives the two support plates 22 to fold upward along the lower pressure plate 26, and then bends the stamping sheet upward along the upper pressure plate 21.

[0039] In the process of bending the stamped sheet, in order to make the deformation force of the bending part smaller and reduce the metal fatigue and cracks caused by the bending process of the stamped sheet, after the upper pressing plate 21 and the lower pressing plate 26 clamp the stamped sheet, current is passed through the two discharge electrodes 261. The current passes through the bent part of the stamped sheet, and the bent part is heated and softened, making it easier to bend and reducing the metal fatigue caused by the bending process of the stamped sheet.

[0040] During the process of bending and stamping the stamped sheet, the oil pump 53 is powered on to transmit the lubricating oil to the first nozzle 51 and the second nozzle 52. The first nozzle 51 sprays the lubricating oil onto the support plate 22, so as to reduce the friction damage between the stamped sheet and the support plate 22 during the bending process. In addition, after the bending part of the stamped sheet is heated and bent, the lubricating oil is sprayed onto the upper pressing plate 21 through the second nozzle 52. The lubricating oil flows down along the upper pressing plate 21 to the bending part of the stamped sheet, and the bending part is quenched to make the bending part cooler and harder.

[0041] As the lubricating oil flows downward, it flows downward through the support plate 22 to the first guide groove 251 and the second guide groove 31 . After the second guide groove and the filtering treatment, the lubricating oil finally flows into the return oil tank 55 and is supplied to the oil pump 53 for reuse.

[0042] In summary, the stamping device for hardware processing in the embodiment of the present invention lifts and bends the metal stamping parts by two upwardly bendable support plates, supports and fixes the upper surface of the metal stamping parts that need to be bent by the upper pressing plate, and then the support plates perform the final bending on the stamping parts, thereby reducing the bending deformation on both sides of the bent stamping parts.

[0043] By cooperating with the above-mentioned embodiment to heat the bend of the stamped plate, after the bend is heated and bent, lubricating oil is sprayed onto the bend of the stamped plate to perform quenching treatment on the bend, so that the bend is cooled and made harder.

[0044] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A punching device for hardware processing, characterized in that: The invention comprises a stamping mechanism (2), wherein the stamping mechanism (2) comprises an upper pressing plate (21), a supporting plate (22) and a lower pressing plate (26), wherein the lower pressing plate (26) is arranged directly below the upper pressing plate (21) so as to be movable up and down, two supporting plates (22) are provided, and the two supporting plates (22) are symmetrically arranged on both sides of the lower pressing plate (26), and the two supporting plates (22) are hingedly connected to each other, and an upper base plate (25) is provided at the bottom of the lower pressing plate (26) for driving the lower pressing plate (26) and the two supporting plates (22) to move up and down synchronously, and a bending hydraulic rod (23) for driving the supporting plate (22) to bend is provided on the upper surface of the upper base plate (25), and a stamping hydraulic rod (4) for driving the upper base plate (25) to move up and down is provided at the bottom of the upper base plate (25).

2. The punching device for hardware processing according to claim 1, characterized in that: Discharge electrodes (261) are provided at both ends of the top of the lower pressing plate (26). The discharge electrodes (261) are elastically and telescopically provided on the top of the lower pressing plate (26), and an insulating plate (262) is provided between the two discharge electrodes (261).

3. The punching device for hardware processing according to claim 1, characterized in that: The opposite ends of the upper pressing plate (21) and the lower pressing plate (26) are both wedge-shaped structures, and the upper end of the lower pressing plate (26) and the bottom hinged parts of the two supporting plates (22) are on the same straight line.

4. The punching device for hardware processing according to claim 1, characterized in that: Both ends of the lower pressing plate (26) are provided with a pallet support assembly (24), and the pallet support assembly (24) comprises a hinge shaft (242) and a pallet bracket (241), wherein the two lower pressing plates (26) are hinged to each other via the hinge shaft (242), the pallet bracket (241) is arranged at the bottom of the hinge shaft (242), and the bottom of the pallet bracket (241) is connected to the upper base plate (25).

5. The punching device for hardware processing according to claim 1, characterized in that: Both ends of the bending hydraulic rod (23) are respectively hinged to the opposite surfaces of the upper base plate (25) and the support plate (22), and a plurality of the bending hydraulic rods (23) are provided, and the plurality of bending hydraulic rods (23) move synchronously in telescopic manner.

6. The punching device for hardware processing according to claim 1, characterized in that: The invention also comprises a lubrication mechanism (5), wherein the lubrication mechanism (5) comprises a first nozzle (51), a second nozzle (52) and an oil pump (53), wherein the first nozzle (51) is arranged on both sides of the upper pressure plate (21), the second nozzle (52) is arranged on the upper surface of the support plate (22), and the first nozzle (51) and the second nozzle (52) are connected to the oil outlet end of the oil pump (53).

7. The punching device for hardware processing according to claim 6, characterized in that: A suspension bridge assembly (1) is arranged above the upper pressure plate (21), and the suspension bridge assembly (1) comprises a suspension bridge bracket (11) and a cross beam (12), wherein the cross beam (12) is arranged on the top of the upper pressure plate (21), the suspension bridge bracket (11) is arranged at both ends of the cross beam (12), and a lower base plate (3) is arranged at the bottom of the suspension bridge bracket (11).

8. The punching device for hardware processing according to claim 7, characterized in that: A first guide groove (251) is provided in the middle of the upper surface of the upper base plate (25), a through groove (252) is provided at the bottom of the first guide groove (251), a second guide groove (31) is provided in the middle of the upper surface of the lower base plate (3), a filter screen (32) is provided at the top of the second guide groove (31), a return oil tank (55) is provided at the bottom of the second guide groove (31), and the return oil tank (55) is connected to the oil inlet end of the oil pump (53).

9. The punching device for hardware processing according to claim 8, characterized in that: The outlet of the first nozzle (51) faces the side of the upper pressure plate (21), and a plurality of second nozzles (52) are provided, and the plurality of nozzles are distributed in an array on the upper surface of the support plate (22). The bottom of the second nozzles (52) is connected to a diverter (54) through a branch pipe, and the oil inlet end of the diverter (54) is connected to the oil outlet end of the return oil tank (55).

10. The punching device for hardware processing according to claim 7, characterized in that: A mounting plate (211) is provided on the top of the upper pressure plate (21), and the mounting plate (211) is slidably arranged at the bottom of the crossbeam (12) up and down, a guide rod (212) is provided between the mounting plate (211) and the crossbeam (12), and a spring (213) is provided between the mounting plate (211) and the crossbeam (12).

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