A method of cutting a metal mesh membrane

Abstract

The present application relates to a kind of cutting methods of metal mesh membrane, belong to material processing forming technical field, solve the problems of low efficiency, low qualified rate of existing metal mesh membrane cutting device and method.The cutting method of metal mesh membrane disclosed in the present application is by pressing the part of metal mesh membrane, then using die cutting method, the upper die and lower die provided with blade are combined by hydraulic press, so that the cutting forming of metal mesh membrane parts is completed at one time.The cutting method of metal mesh membrane disclosed in the present application can effectively overcome the technical defects of low efficiency, low qualified rate and high trial and error cost of metal mesh membrane produced by existing cutting device, not only improves the cutting efficiency of metal mesh membrane, but also makes the metal mesh membrane after cutting have good cutting edge quality, while maintaining high bubble point value.

Description

Technical Field

[0001] This invention relates to the field of material processing and forming technology, specifically to a method for cutting a metal mesh film. Background Technology

[0002] Surface tension tanks are crucial storage devices in aerospace and other fields. For surface tension tanks using a metal mesh film, the metal mesh film is formed by stainless steel wires arranged in a dense mesh pattern, with wire diameters of tens of μm and gaps of approximately 10 μm. Due to the ultra-thin thickness and large mesh count of the metal mesh film, even slight pressure or wrinkles can cause deformation and failure of the pores, directly affecting product performance. Traditional cutting methods include scissor cutting, blade cutting, and laser cutting. Scissor cutting produces rough edges, is prone to snagging, and easily results in wrinkles; this method is also difficult to achieve for annular or other more complex shapes. Laser cutting can cause ablation of the metal mesh film edges or even weld it to the pressure block. Traditional methods of cutting metal mesh films are inefficient, have low yield rates, and some defects are undetectable until bubble point testing is performed after welding to the channel to determine its quality, resulting in high trial-and-error costs. Summary of the Invention

[0003] Based on the above analysis, the present invention aims to provide a metal mesh film cutting device and method to solve the problems of low efficiency and low yield of existing metal mesh film cutting methods.

[0004] The objective of this invention is mainly achieved through the following technical solutions:

[0005] A method for cutting a metal mesh film includes the following steps:

[0006] S100: Fix the lower and upper molds of the metal mesh film cutting device onto the lower and upper platforms of the hydraulic press, respectively;

[0007] S200: Place and position the metal mesh film preform;

[0008] S300: The upper platform of the hydraulic press drives the upper mold to descend and close with the lower mold, completing the cutting process;

[0009] S400: Raise the platform on the hydraulic press and remove the finished metal mesh film parts;

[0010] S500: Repeat steps S200 and S400 until all metal mesh film preforms have been cut.

[0011] Furthermore, step S100 includes the following sub-steps:

[0012] S101: Fix the lower mold on the lower platform of the hydraulic press;

[0013] S102: Place the upper mold on the lower mold so that the upper mold and the lower mold are completely closed;

[0014] S103: Lower the upper platform of the hydraulic press and fix the upper mold on the upper platform of the hydraulic press.

[0015] Furthermore, the lower mold is equipped with a lower mold cutting tool, and the upper mold is equipped with an upper mold cutting tool.

[0016] Furthermore, step S102 involves placing the upper mold on the lower mold so that the upper mold cutting tool and the lower mold cutting tool are fully in contact.

[0017] Furthermore, in step S300, the lower die tool and the upper die tool work together to perform vertical die cutting on the metal mesh film blank.

[0018] Furthermore, the cutting edge shapes of the lower die and the upper die are the same as the shape of the metal mesh film part to be cut.

[0019] Furthermore, step S200 includes the following sub-steps:

[0020] S201: Raise the upper platform of the hydraulic press to raise the upper mold and place the metal mesh film blank on the lower mold;

[0021] S202: Press and position the metal mesh film blank.

[0022] Furthermore, step S100 includes the following sub-steps:

[0023] S101: Fix the lower mold on the lower platform of the hydraulic press;

[0024] S102: Place the upper mold on the lower mold so that the upper mold and the lower mold are completely closed;

[0025] S103: Assemble the pressure block onto the upper mold;

[0026] S104: Lower the upper platform of the hydraulic press and fix the upper mold on the upper platform of the hydraulic press.

[0027] Further, in step S202, the metal mesh film blank is pressed onto the lower mold by a pressure block.

[0028] Furthermore, the shape of the bottom surface of the pressure block is exactly the same as the shape of the metal mesh film part to be cut, and the pressure block completely presses down the part of the metal mesh film part to be cut.

[0029] Furthermore, the bottom surface of the pressure block uses an elastic material to flexibly press the metal mesh film part.

[0030] Furthermore, the upper mold includes an outer upper mold and an inner upper mold.

[0031] Furthermore, the lower mold is provided with an outer cutting tool and an inner cutting tool, the outer upper mold is provided with an outer cutting tool that cooperates with the outer cutting tool of the lower mold, and the inner upper mold is provided with an inner cutting tool that cooperates with the inner cutting tool of the lower mold.

[0032] Furthermore, step S100 includes the following sub-steps:

[0033] S101: Fix the lower mold on the lower platform of the hydraulic press;

[0034] S102: Place the outer upper mold on the lower mold so that the outer upper mold and the lower mold are completely closed;

[0035] S103: Assemble the pressure block onto the outer upper mold;

[0036] S104: Place the inner upper mold on the lower mold so that the inner upper mold is completely closed with the lower mold and the outer upper mold respectively;

[0037] S105: Lower the upper platform of the hydraulic press and fix the inner upper mold and outer upper mold on the upper platform of the hydraulic press.

[0038] Furthermore, step S103 includes axial positioning, circumferential limiting, and axial limiting of the pressure block relative to the upper mold.

[0039] Further, step S201 is: raising the upper platform of the hydraulic press so that the upper mold and the pressure block (3) are both lifted, and placing the metal mesh film blank on the lower mold.

[0040] Furthermore, step S200 also includes sub-step 203: locking the pressure block (3) onto the lower mold.

[0041] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0042] (1) The present invention uses a die-cutting method based on the shape of the part, which allows the metal mesh film blank to be cut into the required shape by instantaneous force, greatly reducing the factors and time that cause displacement and deformation of the metal mesh film, thereby significantly improving the quality and cutting efficiency of the finished metal mesh film parts.

[0043] (2) In this invention, the metal mesh film parts are subjected to shearing force only in the vertical direction due to the use of die cutting method. Compared with the cutting method using scissors, cutters or rotating circular blades, this invention overcomes the problem that the metal mesh wires are easily displaced, pulled or squeezed due to forces in multiple directions, resulting in rough edges, easy snagging and wrinkles.

[0044] (3) By using a die-cutting method, this invention overcomes the shortcomings of using scissors, cutters or rotating circular blades to cut annular or other more complex shapes of metal mesh films, thus meeting the demand for special shapes of metal mesh films and making their application more flexible.

[0045] (4) The present invention overcomes the shortcomings of laser cutting, which easily causes ablation or even welding to the mold on the edge of the metal mesh film, by using the die-cutting method. It not only makes the finished metal mesh film parts have a high bubble point value, but also obtains high-quality cut edges.

[0046] (5) The present invention uses a method of completely pressing the metal mesh film part to both position the metal mesh film blank and prevent the metal mesh film from shifting in the vertical direction due to the reaction force during cutting, thereby ensuring the shape accuracy of the metal mesh film part and the quality of the bubble holes.

[0047] (6) By adopting a flexible pressing method, the parts of the metal mesh film blank can be kept flat and flexibly positioned during the cutting process. This overcomes the defects of deformation and failure of small holes on the metal mesh film caused by misalignment or deformation between metal mesh wires during cutting, thus ensuring that the metal mesh film after cutting still has a high bubble point value.

[0048] (7) By employing a method of axially positioning the pressure block relative to the upper mold, the bottom plane of the pressure block can accurately press all the finished parts of the metal mesh film parts.

[0049] (8) By using a method of circumferentially limiting the pressure block relative to the upper mold, the present invention can prevent the pressure block from rotating when pressing the metal mesh film, thus avoiding shape damage to the bubble holes caused by the rotation of the pressure block.

[0050] (9) By adopting the method of axially limiting the pressure block relative to the upper mold, the present invention can not only make the upper mold drive the pressure block to rise and fall together during installation and disassembly, which facilitates installation, feeding, picking up and disassembly, but also limit the upper mold cutting tool to a certain distance above the bottom surface of the pressure block, so as to smoothly complete the pressing and die cutting of the metal mesh film blank in subsequent steps.

[0051] (10) By locking the pressure block on the lower mold, the present invention prevents the pressure block from being displaced axially upward due to the reaction force during cutting, thereby ensuring that the shape of the bubble hole in the pressed part is always effectively fixed, and finally obtaining a metal mesh film part with a high bubble point value.

[0052] (11) By using an annular pressing block and two upper molds (inner and outer), the present invention can cut high-quality annular metal mesh film parts in one go, which solves the problem that the traditional cutting method is difficult to cut annular metal mesh film parts and meets the flexible and special application requirements of metal mesh film.

[0053] (12) The cutting method of the metal mesh film of the present invention is convenient, simple to implement, easy to install, and precise to cut. It can effectively overcome the technical defects of low efficiency, low pass rate and high trial and error cost of the metal mesh film produced by the existing cutting device, and improve the cutting efficiency of the metal mesh film.

[0054] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the specification or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the content specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0055] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0056] Figure 1 This is a schematic diagram of the steps of the cutting method for the metal mesh film in Example 1;

[0057] Figure 2 This is a schematic diagram of an apparatus for implementing the metal mesh film cutting method of Example 1;

[0058] Figure 3 This is a schematic diagram of an apparatus for implementing the metal mesh film cutting method of Example 1;

[0059] Figure 4 An exploded view of an apparatus for implementing the metal mesh film cutting method of Example 1;

[0060] Figure 5 This is a step-by-step schematic diagram of the cutting method for the metal mesh film in Example 2.

[0061] Figure 6 This is a schematic diagram of an apparatus for implementing the metal mesh film cutting method of Example 2;

[0062] Figure 7 This is a cross-sectional view of an apparatus for implementing the metal mesh film cutting method of Example 2;

[0063] Figure label:

[0064] 1-Lower die; 11-Lower die cutting tool; 101-Lower die outer cutting tool; 102-Lower die inner cutting tool; 12-Second threaded hole; 2-Upper die; 201-Outer upper die; 202-Inner upper die; 21-Upper die cutting tool; 2011-Upper die outer cutting tool; 2021-Upper die inner cutting tool; 22-Through cavity; 23-Limiting groove; 24-Mounting platform; 3-Pressure block; 31-Guide surface; 32-Positioning rod; 33-First threaded hole; 4-Push plate; 5-Bolt assembly; 6-Spring; 7-Metal mesh film blank. Detailed Implementation

[0065] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0066] Example 1

[0067] like Figure 1 As shown, this embodiment discloses a method for cutting a metal mesh film, which uses a metal mesh film cutting device for cutting, and specifically includes the following steps:

[0068] S100: Fix the lower mold 1 and upper mold 2 of the metal mesh film cutting device to the lower platform and upper platform of the hydraulic press, respectively;

[0069] S200: Place the metal mesh film blank 7 and position it;

[0070] S300: The upper platform of the hydraulic press drives the upper mold 2 to descend and close with the lower mold 1, completing the cutting;

[0071] S400: Raise the platform on the hydraulic press and remove the finished metal mesh film parts;

[0072] S500: Repeat steps S200 and S400 until all metal mesh film blanks 7 have been cut.

[0073] The following description uses a metal mesh film cutting device for implementing this method as an example. Figure 2 As shown, the metal mesh film cutting device includes a lower mold 1 and an upper mold 2. The upper surface of the lower mold 1 and the lower surface of the upper mold 2 have matching lower mold cutting tools 11 and upper mold cutting tools 21, respectively. The cutting edge shapes of the lower mold cutting tools 11 and upper mold cutting tools 21 are the same as the shape of the metal mesh film part to be cut.

[0074] When implementing step S100, first place the lower mold 1 on the lower platform of the hydraulic press, install the lower mold 1 on the lower platform of the hydraulic press with screws, then place the upper mold 2 on the lower mold 1 so that the upper mold 2 and the lower mold 1 are completely closed, then lower the upper platform of the hydraulic press, install the upper mold 2 on the upper platform of the hydraulic press with screws, and finally raise the upper platform of the hydraulic press to facilitate the implementation of step S200.

[0075] When implementing step 200, the metal mesh film blank 7 is first placed on the lower mold 1, and then the metal mesh film blank 7 is positioned and kept flat. The positioning method is to use pressure positioning or edge limiting method.

[0076] When implementing step 300, the upper platform of the hydraulic press is lowered so that the upper die blade 21 on the upper die 2 is a certain distance away from the upper surface of the metal mesh film. The upper platform of the hydraulic press is operated to drive the upper die 2 to descend rapidly at a speed of not less than 30mm / s. When the upper die 2 and the lower die 1 are closed, the lower die blade 11 and the upper die blade 21 apply a vertical shearing force to the metal mesh film instantly, so that the shape of the metal mesh film blank 7 is die-cut by the lower die blade 11 and the upper die blade 21, thereby cutting out the finished parts of the metal mesh film of the required shape in one go.

[0077] Finally, in step S400, the upper platform of the hydraulic press is raised to remove the finished metal mesh film parts; continue to repeat steps S200 to S400 until all metal mesh film blanks 7 are cut.

[0078] The metal mesh film cutting method of this invention, by employing a die-cutting method with a die of the desired part shape, allows the metal mesh film blank 7 to be cut instantly under force, greatly reducing the factors and time that cause displacement and deformation of the metal mesh film, thereby significantly improving the quality and cutting efficiency of the finished metal mesh film parts. Furthermore, compared with cutting methods using scissors, cutters, or rotating blades, the edge of the metal mesh film part is only subjected to shearing force in the vertical direction during die-cutting. This overcomes the problems of rough edges, snagging, and wrinkles caused by displacement, pulling, or compression of the metal mesh wires due to forces in multiple directions. It also overcomes the shortcomings of traditional cutting methods in cutting annular or other more complex shapes of metal mesh films. Moreover, compared with laser cutting, it overcomes the shortcomings of laser cutting, which easily causes ablation or even welding of the metal mesh film edges to the mold, resulting in finished metal mesh film parts with higher bubble point values ​​and high-quality cut edges. Therefore, the metal mesh film cutting method of this embodiment can effectively overcome the technical defects of low efficiency, low pass rate and high trial and error cost of metal mesh film produced by existing cutting devices. It not only improves the cutting efficiency of metal mesh film, but also makes the metal mesh film have better cutting edge quality after cutting, while maintaining a high bubble point value.

[0079] Preferably, step S100 includes the following sub-steps:

[0080] S101: Fix the lower mold 1 on the lower platform of the hydraulic press;

[0081] S102: Place the upper mold 2 on the lower mold 1 so that the upper mold 2 and the lower mold 1 are completely closed;

[0082] S103: Assemble the pressure block 3 onto the upper mold 2;

[0083] S104: Lower the upper platform of the hydraulic press and fix the upper mold 2 on the upper platform of the hydraulic press.

[0084] like Figure 3 As shown, a metal mesh film cutting device for implementing this embodiment also includes a pressure block 3. After completing step S102 to fully close the upper mold 2 and the lower mold 1, step S103 is then performed to assemble the pressure block 3 with the upper mold 2. The bottom shape of the pressure block 3 is the same as the shape of the metal mesh film part to be cut, and it can press the finished part part in the metal mesh film blank 7 in steps S200 and S300.

[0085] In this embodiment, step S100 adds the process of installing the pressure block 3, so that the finished part can be pressed by the pressure block 3 during subsequent cutting, thus providing the prerequisite for subsequent precise cutting.

[0086] Preferably, step S103 includes positioning the pressure block 3 relative to the upper mold 2 in the center, circumferentially, and axially.

[0087] like Figure 4 As shown, in step S103, the upper mold 2 is provided with a cylindrical cavity 22 and a limiting groove 23, and the pressure block 3 is provided with a guide surface 31 and a positioning rod 32; the guide surface 31 cooperates with the cavity 22 to make the pressure block 3 axially positioned relative to the upper mold 2, the limiting groove 23 and the side wall of the positioning rod 32 cooperate to make the pressure block 3 circumferentially limited relative to the upper mold 2, and the limiting groove 23 and the bottom surface of the positioning rod 32 cooperate to make the pressure block 3 axially positioned relative to the upper mold 2.

[0088] It should be noted that in step S103, when the upper mold 2 and the lower mold 1 are in the mold-closed state, the bottom surfaces of the limiting groove 23 and the positioning rod 32 are not in contact. When the upper platform of the hydraulic press drives the upper mold 2 away from the lower mold 1, the bottom surfaces of the limiting groove 23 and the positioning rod 32 come into contact, so that when the upper platform of the hydraulic press drives the upper mold 2 to rise and fall, the pressure block 3 can be driven to rise and fall at the same time.

[0089] By axially positioning the pressure block 3 and the upper mold 2, the bottom plane of the pressure block 3 can accurately press all the finished parts of the metal mesh film part. By circumferentially limiting the pressure block 3 and the upper mold 2, the pressure block 3 can be prevented from rotating when pressing the metal mesh film, thus avoiding shape damage to the bubble holes caused by the rotation of the pressure block 3. Axially limiting the pressure block 3 and the upper mold 2 can not only allow the upper mold 2 to lift and lower the pressure block 3 together during installation and disassembly, which facilitates installation, feeding, unloading and disassembly, but also limit the upper mold cutting tool 21 to a certain distance above the bottom surface of the pressure block 3, so as to smoothly complete the pressing and die-cutting of the metal mesh film blank 7 in the subsequent steps.

[0090] Preferably, step S200 includes the following sub-steps:

[0091] S201: Raise the upper platform of the hydraulic press to raise both the upper mold 2 and the pressure block 3, and place the metal mesh film blank 7 on the lower mold 1;

[0092] S202: Lower the upper platform of the hydraulic press so that all the parts of the metal mesh film blank 7 are flexibly held;

[0093] S203: Lock the pressure block 3 onto the lower mold 1. This step uses a locking structure.

[0094] like Figure 4As shown, further, the flexible pressing in step S202 can be achieved by attaching a pad 4 to the bottom of the pressing block 3. The pad 4 can be made of rubber, sponge, or other elastic material. The shape of the pad 4 is the same as the bottom shape of the pressing block 3, so that all the parts of the metal mesh film are flexibly pressed, so that it can remain flat and be flexibly positioned during the cutting process. This overcomes the defects of deformation and failure of small holes on the metal mesh film caused by misalignment or deformation between the metal mesh wires during cutting, thus ensuring that the metal mesh film after cutting still has a high bubble point value.

[0095] like Figure 4 The locking structure shown in implementation step S203 includes a first threaded hole 33, a second threaded hole 12, a bolt assembly 5, and a spring 6. The first threaded hole 33 is located at the end of the positioning rod 32, and the second threaded holes 12 are located around the lower mold 1, with their number and position corresponding to the first threaded holes 33. The bolt assembly 5 is connected to the first threaded hole 33 and the second threaded hole 12, thereby locking the pressure block 3 onto the lower mold 1. Step S203 prevents the pressure block 3 from undergoing axial upward displacement due to the reaction force during cutting, thus ensuring that the shape of the bubble pores in the pressed part is always effectively fixed, ultimately obtaining a metal mesh film part with a high bubble point value. The spring 6 can prevent the bolt assembly 5 from being locked too tightly, ensuring that all parts of the metal mesh film part are uniformly and flexibly pressed.

[0096] In step S300 of this embodiment, since a die-cutting method is used and the blade wall of the upper die 21 is perpendicular to the metal mesh film, only a vertical shearing force is applied to the edge of the metal mesh film part. Since the edge of the metal mesh film part is bidirectionally pressed and limited in the vertical direction, no displacement in the vertical direction will occur. Therefore, the shape accuracy of the metal mesh film part and the quality of the bubble holes are guaranteed, and a high-quality cutting edge is obtained.

[0097] When implementing step S400 of this embodiment, the lock between the pressure block 3 and the lower mold 1 must be unlocked before the upper platform of the hydraulic press is raised.

[0098] Example 2

[0099] like Figure 5 As shown, the difference between the metal mesh film cutting method disclosed in this embodiment and that in Embodiment 1 is that steps S102 to S104 in Embodiment 1 are replaced by the following steps:

[0100] S102: Place the outer upper mold 201 on the lower mold 1 so that the outer upper mold 201 and the lower mold 1 are completely molded together;

[0101] S103: Assemble the pressure block 3 onto the outer upper mold 201;

[0102] S104: Place the inner upper mold 202 on the lower mold 1, so that the inner upper mold 202 is completely closed with the lower mold 1 and the outer upper mold 201 respectively;

[0103] S105: Lower the upper platform of the hydraulic press and fix the inner upper mold 202 and the outer upper mold 201 on the upper platform of the hydraulic press.

[0104] like Figure 6 , Figure 7 As shown, the lower mold 1 of the metal mesh film cutting device implementing this embodiment is provided with an outer lower mold blade 101 and an inner lower mold blade 102. The upper mold 2 includes an outer upper mold 201 and an inner upper mold 202. The outer upper mold 201 is provided with an outer upper mold blade 2011, and the inner upper mold 202 is provided with an inner upper mold blade 2021.

[0105] After completing step S101, step S102 is performed first, placing the outer upper mold 201 on the lower mold 1 so that the lower mold outer cutting tool 101 cooperates with the upper mold outer cutting tool 2011 to complete the axial positioning of the outer upper mold; then step S103 is performed, assembling the pressure block 3 on the outer upper mold 201, the same as in embodiment 1, to complete the axial positioning, circumferential limiting and axial limiting of the pressure block 3 relative to the outer upper mold 201.

[0106] Next, step S104 is performed, in which the inner upper mold 202 is placed on the lower mold 1, so that the inner cutting tool 102 of the lower mold and the inner cutting tool 2021 of the upper mold cooperate. At the same time, the inner upper mold 202 and the top mounting platform 24 of the outer upper mold 201 also cooperate, so that the inner upper mold 202 and the outer upper mold 201 are also circumferentially limited.

[0107] When implementing step S105, since both the inner upper mold 202 and the outer upper mold 201 have two mounting platforms 24 on their tops, the inner upper mold 202 and the outer upper mold 201 can be mounted on the upper platform of the hydraulic press, so that the upper platform of the hydraulic press can simultaneously drive the inner upper mold 202 and the outer upper mold 201 to rise and fall, and make the inner upper mold 202 and the outer upper mold 201 bear force evenly.

[0108] In this embodiment, the use of annular pressure block 3 can completely hold the finished part of the annular metal mesh film to be cut. When the upper platform of the hydraulic press drives the inner upper mold 202 and the outer upper mold 201 to move downwards simultaneously for cutting, the lower mold outer cutting tool 101 cooperates with the upper mold outer cutting tool 2011 to complete the cutting of the outer edge of the part, and the lower mold inner cutting tool 102 cooperates with the upper mold inner cutting tool 2021 to complete the cutting of the inner edge of the part. Thus, a high-quality annular metal mesh film part is cut in one go, which solves the defect that the traditional cutting method is relatively difficult to cut annular metal mesh film parts and meets the flexible and special application requirements of metal mesh film.

Claims

1. A method for cutting a metal mesh film, characterized by comprising the following steps: S100: Fix the lower mold (1) and upper mold (2) of the metal mesh film cutting device on the lower platform and upper platform of the hydraulic press respectively; including: after the upper mold (2) and lower mold (1) are completely closed, the pressure block (3) is assembled with the upper mold (2); S200: Place the metal mesh film blank and position it; including: pressing block (3) presses the metal mesh film blank on the lower mold (1) and limits the upper mold cutting tool (21) at a certain distance above the bottom surface of the pressing block (3), and then locks the pressing block (3) on the lower mold (1); S300: The upper platform of the hydraulic press drives the upper mold (2) to descend and close with the lower mold (1) to complete the cutting; S400: Unlock the lock between the pressure block (3) and the lower mold (1), raise the upper platform of the hydraulic press, and take out the finished metal mesh film parts; S500: Repeat steps S200 and S400 until all metal mesh film preforms have been cut. In step S100, the assembly steps of the pressure block (3) and the upper mold (2) include: positioning the pressure block relative to the upper mold in the center, limiting its circumferential direction, and limiting its axial direction; wherein, the upper mold (2) is provided with a through cavity (22) and a limiting groove (23), and the pressure block (3) is provided with a guide surface (31) and a positioning rod (32); the guide surface (31) cooperates with the through cavity (22) to make the pressure block (3) axially positioned relative to the upper mold (2), and the limiting groove (23) and positioning rod (32) are fixed. The side walls cooperate to make the pressure block (3) circumferentially limited relative to the upper mold (2). The bottom surfaces of the limiting groove (23) and the positioning rod (32) cooperate to make the pressure block (3) axially positioned relative to the upper mold (2). When the upper mold (2) and the lower mold (1) are in the mold closing state, the bottom surfaces of the limiting groove (23) and the positioning rod (32) do not contact each other. When the upper platform of the hydraulic press drives the upper mold (2) to leave the lower mold (1), the bottom surfaces of the limiting groove (23) and the positioning rod (32) contact each other.

2. The method for cutting the metal mesh film according to claim 1, characterized in that, Step S100 includes the following sub-steps: S101: Fix the lower mold (1) on the lower platform of the hydraulic press; S102: Place the upper mold (2) on the lower mold (1) so that the upper mold (2) and the lower mold (1) are completely closed; S103: Lower the upper platform of the hydraulic press and fix the upper mold (2) on the upper platform of the hydraulic press.

3. The method for cutting the metal mesh film according to claim 2, characterized in that, The lower mold (1) is equipped with a lower mold cutting tool (11), and the upper mold (2) is equipped with an upper mold cutting tool (21).

4. The method for cutting the metal mesh film according to claim 3, characterized in that, The sub-step S102 involves placing the upper mold (2) on the lower mold (1) so that the upper mold cutting tool (21) and the lower mold cutting tool (11) are fully in contact.

5. The method for cutting the metal mesh film according to claim 4, characterized in that, In step S300, the lower die cutting tool (11) and the upper die cutting tool (21) work together to perform vertical die cutting on the metal mesh film blank.

6. The method for cutting the metal mesh film according to claim 5, characterized in that, The cutting edge shapes of the lower die cutting tool (11) and the upper die cutting tool (21) are the same as the shapes of the metal mesh film parts to be cut.

7. The method for cutting a metal mesh film according to claim 1, characterized in that, Step S200 includes the following sub-steps: S201: Raise the upper platform of the hydraulic press to raise the upper mold (2) and place the metal mesh film blank on the lower mold (1); S202: Press and position the metal mesh film blank.

8. The method for cutting a metal mesh film according to claim 7, characterized in that, The shape of the bottom surface of the pressure block (3) is exactly the same as the shape of the metal mesh film part to be cut, and the pressure block (3) completely presses the part of the metal mesh film part to be cut.

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