A method for manufacturing composite metal rubber

Abstract

The present invention belongs to the field of metal rubber technology and provides a method for producing a composite metal rubber, comprising the following steps: determining the size and parameters of the metal rubber base to be produced and the size and parameters of the metal rubber tube cloth to be produced based on the size and parameters of the metal rubber to be produced; selecting corresponding metal wires based on the size and parameters of the metal rubber base to be produced, preparing the selected metal wires into spiral coils, and then winding the spiral coils layer by layer to form a base blank; selecting corresponding metal wires based on the size and parameters of the metal rubber tube cloth to be produced, and weaving the selected metal wires into tube cloth; covering and wrapping the tube cloth on the base blank to form a metal rubber blank; placing the metal rubber blank into a mold and stamping it into metal rubber. The present invention uses a wound metal rubber as a base and wraps the tube cloth around the wound metal rubber to produce a metal rubber element with low stiffness and high energy dissipation coefficient.

Description

Technical Field

[0001] The invention belongs to the technical field of metal rubber and provides a method for manufacturing a composite metal rubber. Background Art

[0002] Metal rubber is a new type of homogeneous, elastic, porous mesh material with a structure similar to the polymer structure of rubber. Through a molding process, it possesses rubber-like stiffness and damping properties while also possessing unique mechanical and vibration isolation properties that rubber cannot match. Its inherent metal oxidation and corrosion resistance ensures long-term stable operation under harsh operating conditions such as extreme pressure and temperature fluctuations. Based on the preparation method, it can be divided into tangled-metal rubber (T-MR) and braided-metal rubber (W-MR). The traditional preparation process for tangled-metal rubber can be broadly divided into the following steps: spiral winding of metal wire, fixed-length stretching of the spiral winding, spiral winding of the blank, and stamping of the metal rubber. Braided metal rubber can be further divided into wire braided and spiral braided types. The preparation process for wire braided metal rubber involves directly weaving metal wires into a mesh and then stamping it. The preparation process for spiral braided metal rubber is similar to that for tangled metal rubber, except that the blank is braided instead of tangled.

[0003] The mechanical properties of metal rubbers prepared by two different processes are different: for T-MR, the metal wire needs to be first wound into a long and continuous spiral coil, and its overall structure is similar to a spring. Then, the spiral coil is stretched at equal intervals to maintain the pitch of the spiral coil at a certain condition, and then the spiral coil is wound into a blank. Finally, the wound blank is placed in a mold for cold stamping to obtain a metal rubber specimen; for W-MR, the metal wire is directly woven into a metal wire tube mesh cloth through a circular loom. According to the size of the metal rubber to be prepared, the tube mesh cloth is cut and rolled into a blank, and finally placed in a mold for cold stamping to obtain a metal rubber specimen.

[0004] The two processes described above produce metallic rubber with significantly different internal microstructures, resulting in potentially different mechanical properties. At the same relative density, T-MR exhibits greater stiffness and energy dissipation coefficient than W-MR, but lower stiffness and greater energy dissipation coefficient are often desirable in engineering materials. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a method for manufacturing a composite metal rubber, which uses a wound metal rubber as a substrate and wraps a tube cloth around the wound metal rubber to manufacture a metal rubber element with low stiffness and high energy dissipation coefficient.

[0006] The technical solution of the present invention comprises the following steps:

[0007] The size and parameters of the metal rubber to be prepared are determined according to the size and parameters of the metal rubber to be prepared, and the size and parameters of the metal rubber tube cloth to be prepared.

[0008] The corresponding metal wire is selected according to the size and parameters of the metal rubber substrate to be prepared, and the selected metal wire is prepared into a spiral roll, and then the spiral roll is wound layer by layer to form a blank substrate.

[0009] The corresponding metal wires are selected according to the size and parameters of the metal rubber tube cloth to be prepared, and the selected metal wires are woven into the tube cloth.

[0010] The cylindrical cloth is covered and wrapped on the blank base to form a metal rubber blank.

[0011] The metal rubber blank is placed in a mold and stamped into metal rubber.

[0012] Furthermore, the value of the braiding ratio of the metal rubber to be prepared and the mass of the metal rubber to be prepared are obtained, and the mass of the spiral roll and the mass of the tube cloth are calculated by the following formula:

[0013] ,

[0014] For the braiding ratio, is the mass of the spiral coil, in g, is the mass of the cloth, in g, is the mass of the metal rubber, in g.

[0015] Furthermore, the steps of preparing the spiral coil include:

[0016] The metal wire is fed in a fixed direction, and then the direction of movement of the metal wire is changed by the first force, causing the metal wire to deform for the first time.

[0017] The deformed metal wire is then subjected to a second force, causing the metal wire to deform and bend for the second time.

[0018] Thus, the wire gradually turns into a spiral coil under the continuous input of the wire.

[0019] Furthermore, the pitch of the spiral coil is adjusted by changing the angle at which the metal wire is subjected to the second force and the plane distance between the point at which the metal wire is subjected to the first force and the point at which the metal wire is subjected to the second force.

[0020] Furthermore, the linear distance between the second stress-bearing point of the metal wire and the center of the spiral coil is adjusted to change the outer diameter of the spiral coil.

[0021] Furthermore, when the spiral coils are wound layer by layer, the angle between two adjacent spiral coils is between 80° and 100°.

[0022] The technical solution provided by the embodiment of the present invention has the following advantages compared with the existing technology:

[0023] The present invention determines the size and parameters of the metal rubber base to be prepared and the size and parameters of the metal rubber tube cloth to be prepared according to the size and parameters of the metal rubber to be prepared; selects corresponding metal wires according to the size and parameters of the metal rubber base to be prepared, and prepares the selected metal wires into spiral rolls, and then winds the spiral rolls layer by layer to form a blank base; selects corresponding metal wires according to the size and parameters of the metal rubber tube cloth to be prepared, and weaves the selected metal wires into tube cloth; covers and wraps the tube cloth on the blank base to form a metal rubber blank; puts the metal rubber blank into a mold for stamping and forming it into metal rubber. Compared with the existing technology, the present invention uses a wound metal rubber as a base and winds the tube cloth around the wound metal rubber to produce a metal rubber element with low stiffness and high energy consumption coefficient.

[0024] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the principle of preparing a spiral coil using a curve rule according to one embodiment of the present invention;

[0027] Figure 2 A schematic diagram of a spiral winding angle according to one embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the microstructure of a tubular cloth according to one embodiment of the present invention;

[0029] Figure 4 A physical diagram of a tubular cloth according to one embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram showing the principle of manufacturing a metal rubber blank according to one embodiment of the present invention;

[0031] Figure 6 This is a schematic structural diagram of a metal rubber blank according to one embodiment of the present invention;

[0032] Figure 7This is a physical picture of a metal rubber blank according to one embodiment of the present invention;

[0033] Figure 8 A flowchart of metal rubber production according to one embodiment of the present invention;

[0034] Figure 9 This is a physical picture of a base blank according to one embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of a stamping die according to one embodiment of the present invention.

[0036] Figure numerals: 1. wire wheel; 2. wire guide; 3. cutter; 4. forming wire gauge; 5. radius wire gauge; 6. blank base; 7. tube cloth; 8. core shaft; 9. metal rubber blank; 10. stamping die; 11. upper pressure head. DETAILED DESCRIPTION

[0037] A specific embodiment of the present invention is described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solutions of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In the description of the embodiments of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0040] like Figures 1 to 10 As shown, the present invention provides a method for manufacturing a composite metal rubber, comprising the following steps:

[0041] The size and parameters of the metal rubber to be prepared are determined according to the size and parameters of the metal rubber to be prepared, and the size and parameters of the metal rubber tube cloth 7 to be prepared.

[0042] Specifically, according to the prepared metal rubber braiding ratio, the metal rubber dimensions and the relative density, the spiral roll mass and the tube cloth mass are calculated respectively. The formula is:

[0043] ,

[0044] For the braiding ratio, is the mass of the spiral coil, in g, is the mass of the cloth, in g, is the mass of the metal rubber, in g.

[0045] The volume is calculated from the dimensions, and the mass is calculated from the volume and density.

[0046] Furthermore, the elastic modulus and strength of the metal wire material significantly affect the mechanical properties of the finished metal rubber. 304H stainless steel (07Cr19Ni10) was selected as the material for the metal rubber, with a wire diameter ranging from 0.08mm to 0.2mm. Table 1 shows the nominal chemical composition of 304H stainless steel, and Table 2 shows some of its physical properties.

[0047] Table 1: Nominal chemical composition of 304H stainless steel

[0048]

[0049] Table 2: 304H stainless steel physical properties

[0050]

[0051] The corresponding metal wire is selected according to the base size and parameters, and the selected metal wire is prepared into a spiral roll, and then the spiral roll is wound layer by layer on the core shaft 8 through a wire rack to form a blank base.

[0052] The principle is: the metal wire is fed in a fixed direction, and then the direction of movement of the metal wire is changed through the first force, causing the metal wire to deform for the first time; then the deformed metal wire is subjected to a second force, causing the metal wire to deform and bend for the second time; thus, as the metal wire is continuously fed, it gradually turns into a spiral roll.

[0053] like Figure 1 As shown, the specific preparation steps include:

[0054] The wire is clamped by the wire feeding wheel 1, and then the wire feeding wheel 1 rotates to pass the wire into the wire guide 2.

[0055] The wire guide 2 fixes the moving direction of the metal wire to the forming structure.

[0056] The forming wire gauge 4 in the forming structure changes the moving direction of the metal wire, causing the metal wire itself to deform, and then a second deformation occurs when passing through the radius wire gauge 5.

[0057] Furthermore, by changing the angle of the second force applied to the metal wire and the plane distance between the first and second force applied points of the metal wire, the pitch of the spiral roll is adjusted, and the straight-line distance between the second force applied point of the metal wire and the center of the spiral roll is adjusted to change the outer diameter of the spiral roll.

[0058] Specifically: by changing the self-axial rotation angle of the radius gauge 5 and changing the plane distance between the radius gauge 5 and the forming gauge 4, the pitch of the spiral roll can be adjusted. At the same time, the outer diameter of the spiral roll can be changed by adjusting the protruding length of the radius gauge 5. After the spiral roll is completed, the metal wire is cut by the cutter 3.

[0059] Specifically, the angle between two adjacent layers of spiral windings on the core shaft 8 is between 80° and 100°, so that the two adjacent layers of spiral windings are staggered with each other and have consistent performance.

[0060] Furthermore, the core shaft 8 is in a frustum shape, and the inclination angle of the core shaft 8 is between 4° and 6°.

[0061] Since the interior of the blank base is a mosaic structure composed of spiral coils connected to each other, this requires that when the spiral coils are formed: first, the overall size of the spiral coils must be consistent so that the internal structure of the formed blank base is uniform; second, the prepared spiral coils should be as long as possible, and it is best to use a whole continuous spiral coil to wind the blank base. Compared with multiple spiral coils in series, a whole continuous spiral coil ensures the integrity and stability of the blank base, and the lack of series joints also makes the overall strength of the blank base higher; thirdly, the method of preparing the spiral coils should not cause damage to the metal wire itself, so as to ensure the life of the final blank base product; finally, the equipment for preparing the spiral coils should be able to flexibly adjust parameters to prepare spiral coils of different lengths, wire diameters and outer diameters.

[0062] Therefore, the spiral coil is prepared by the curve gauge method, which is a coreless winding, such as Figure 1 As shown. The metal wire is fed into the wire guide plate 2 through the clamping rotation of the wire feeding wheel 1, and the moving direction of the metal wire is fixed to the forming position. The metal wire moves straight forward and the forming wire gauge 4 changes its movement direction, causing the metal wire itself to deform. When it passes through the radius wire gauge 5, it is deformed for the second time. The metal wire is deformed into an arc shape twice when it passes through the forming wire gauge 4 and the radius wire gauge 5. Therefore, as the entire metal wire is continuously fed in, the metal wire will change its shape into a spiral coil. The outer diameter of the spiral coil can be changed by moving the radius wire gauge 5 back and forth; at the same time, the pitch of the spiral coil can be changed by adjusting the self-axial rotation angle of the radius wire gauge 5 and adjusting the plane distance of the gauge relative to the forming wire gauge 4; after the wire feeding length reaches the required spiral coil length, the metal wire is cut by the cutter 3. This preparation method has a fast winding speed, stable pitch control, and unlimited theoretical preparation length, and will not cause damage to the metal wire itself.

[0063] For the base of the rough blank, a layer-by-layer forming method is adopted for preparation. The spiral roll needs to be wound layer by layer on the core shaft 8 with a certain tension. The rotation angular velocity of the core shaft 8 itself is coordinated with the left and right movement speed of the spiral winding frame. There is a certain angle θ between the last layer and the previous layer, which is the winding angle. Since the winding machine cannot directly set the size of the winding angle, it is necessary to control the computer to set the left and right movement speed of the wire frame, so as to accurately control the size of the winding angle. Assume that the speed n of the motor of the core shaft 8 of the winding machine is constant at 1r / s, and the speed of the wire frame is controlled by setting the value of "wire diameter" p in the control panel. Here, "wire diameter" refers to the distance the wire frame moves when the core shaft 8 motor makes one circle. Since the core shaft 8 motor n=1r / s, the wire diameter p can be equivalent to the moving speed V of the wire frame, that is, V=p. It is necessary to find the conversion relationship between the moving speed V of the wire frame and the winding angle θ.

[0064] The motor of the core shaft 8 rotates one circle, and the distances of the spiral winding on the core shaft 8 in the x and y directions are considered as a plane, and the following can be obtained: Figure 2 The diagram shows the principle of the spiral winding angle. The distance C in the y direction is the circumference of the core shaft 8. The motor takes 1 second to rotate once. When the spiral roll travels the length C in the y direction, the distance traveled in the x direction is the moving speed V of the wire frame. D is the outer diameter of the spiral roll itself. The red line represents the path of the spiral roll when the wire frame moves in the forward direction, and the blue line represents the path of the spiral roll when the wire frame moves in the reverse direction. The two paths intersect to form a winding angle θ. Therefore, the calculation formula of θ and the wire frame moving speed V is as follows:

[0065] ,

[0066] The spiral coils with equal pitch are driven by the core shaft 8 at a uniform speed through the needle nozzle to move left and right, so that the metal wires can better fit each other. After the layer-by-layer winding is completed, it is taken out from the core shaft 8, and the preparation of the blank base is completed.

[0067] This method of winding the base of the blank will lose tension when winding to the end of the spiral coil, making it impossible for the end to naturally connect with other spiral coils. After removing the base of the blank, the end can be placed in the internal gap of the blank to avoid the blank itself from generating burrs that affect the stability of the structure. If the friction makes it inconvenient to remove the blank, the core shaft 8 can be designed as a truncated cone with an inclination angle of 4° to 6° for replacement. The surface of the core shaft 8 is as smooth as possible to facilitate the removal of the blank. The base of the blank prepared by this process and equipment has a symmetrical external size, an evenly distributed internal spiral coil, and a clear winding angle.

[0068] The corresponding metal wires are selected according to the size and parameters of the tubular cloth 7, and the selected metal wires are woven into the tubular cloth 7 through a circular loom.

[0069] Specifically, the tubular cloth 7 is prepared by a wire weaving method, where the selected metal wire is directly woven through a circular loom. The formed metal tubular cloth 7 can be formed into various shapes by cutting and rolling, which is convenient for subsequent stamping and forming. The metal wire is hooked by the knitting machine needle through the porcelain eye. As the structure rotates and the needle moves up and down, the metal wire is pressed in and released in sequence, gradually forming the woven tubular cloth 7. Through the winding structure at the bottom, the tension is continuously maintained to remove the woven mesh from the needle, forming a long strip of metal wire tubular cloth 7. Figure 3 The microstructure of the woven tube cloth 7 is shown in the figure. Its main feature is the interlocking mesh structure. All the interlocking rings are hooked together. The microstructure of the interlocking rings is rectangular, which can suppress the internal deformation of a single ring. Figure 4 As shown, multiple interlocking rings connected by weaving can move relative to each other under a certain load, which provides special flexibility. This allows the interlocking rings woven together to control deformation within elastic deformation without reaching plastic deformation, which means that this interlocking mesh structure can recover or even rebound to its original shape after unloading the pressure. Because the position of each needle in the needle cylinder of this circular loom is fixed and cannot be adjusted, its diameter density is a fixed value. The height of the needle press triangle can be adjusted through the control panel of the cabinet to change the minimum height to which the needle can be lowered during weaving. According to the physical principles of circular loom weaving, the height of the needle press triangle can adjust the weft density of the woven mesh, and the higher the needle press triangle, the lower the weft density.

[0070] Tube cloth according to quality The required length of cloth is calculated according to the proportion and cut by a cutting machine to obtain the required tube cloth.

[0071] The tubular cloth 7 is covered and wrapped on the blank base to form the metal rubber blank 9.

[0072] Specifically, the prepared woven tube cloth 7 is covered on the base of the blank and rolled and wrapped, as shown in FIG. Figure 5 As shown, the interior is the base of the blank, and the exterior is the tubular cloth 7. It's important to note that the width of the outer tubular cloth 7 is 5% to 10% greater than the length of the spirally wound base. During wrapping, the base should be centered, so that both ends of the tubular cloth 7 extend the same length beyond the central spirally wound base. Furthermore, since there's no way to secure the tubular cloth 7 after wrapping, slightly increased tension can be applied during wrapping to prevent the tubular cloth 7 from rebounding and losing its shape after the metal rubber blank 9 is removed from the mandrel 8.

[0073] The metal rubber blank 9 is placed in a mold and punched into a metal rubber.

[0074] The present invention uses the wound metal rubber as a base and wraps the wound metal rubber with a cylindrical cloth 7 to produce a metal rubber element with low stiffness and high energy dissipation coefficient.

[0075] Put the prepared metal rubber blank 9 into the mold for stamping. When putting the metal rubber blank 9 into the mold, it is necessary to pay attention to whether the metal rubber blank 9 and the inner wall of the mold are squeezed to release the natural hooking state of the spiral coil, resulting in obvious misalignment and movement, so as to avoid affecting the internal uniformity of the metal rubber after molding. When rolling the metal rubber blank 9, it is necessary to pay attention to rolling it along the radial direction of the tube cloth 7, so that the weft direction of the tube cloth 7 is used as the molding direction. This is due to the physical properties of the weaving of the tube cloth 7. It has no rebound ability in the radial direction and can only rebound in the weft direction, so it can be stamped and formed. After rolling, the outermost end of the tube cloth 7 is easy to spread out and difficult to fix. The end of the tube cloth 7 can be extended in the weft direction and wrapped into the inner layer of the roll. As Figure 6 As shown in the figure, it is a schematic diagram of the cross section of the finished metal rubber product. Figure 7 The figure shows the appearance of the finished metal rubber product.

[0076] The load causes the blank to plastically deform, and the internal stress generated by plastic deformation accumulates inside. If the load is removed, the internal stress will cause the blank to rebound, and the formed size cannot be achieved. In order to achieve the final geometric shape of the metal rubber, a multi-step stamping method can be used to reduce residual stress. That is, after loading a certain number of steps, the load is removed and repeated once. When the second loading reaches the same number of steps, the pressure is maintained for a period of time before unloading. Then, the above steps are repeated while gradually increasing the number of steps until the predetermined size is achieved. This method can minimize the rebound of the metal rubber after stamping without using heat treatment.

[0077] like Figure 8 The figure shows the overall preparation flow chart of metal rubber.

[0078] Example:

[0079] The dimensions of the metal rubber after molding are determined to be 10mm×5mm×8.5mm (outer diameter×inner diameter×height), and the relative density is 0.15g / mm 2 , braiding ratio The diameter of the metal wire is 0.08mm, the outer diameter of the spiral is 0.8mm, and the diameter of the metal wire wrapped with the braided tube cloth 7 is 0.08mm. Combining the size, relative density and winding ratio, the mass of the spiral winding of the base blank is calculated. Figure 9 The spiral coils are wound as shown. A base blank 6 is prepared using a layer-by-layer forming method. In this trial, the spiral coils on adjacent sides of the base blank 6 are wound at a 95° angle. To facilitate plastic deformation during stamping, the base blank can be made longer, with a winding width of 12 mm. During winding, the spiral coils of the subsequent layer interlock with the previous layer, preventing slippage, to produce the base blank 6.

[0080] Then, a long metal wire mesh tube cloth 7 is prepared by manual threading using a braiding machine, such as Figure 10 As shown, the required mass of the tubular cloth 7 is calculated based on the relative density and the braiding ratio, and the required length is calculated and cut using a cutting machine. The cut tubular cloth 7 is rolled and covered on the surface of the blank base 6, thus completing the preparation of the metal rubber blank 9. The prepared metal rubber blank 9 is removed and placed in a mold and stamped by the upper pressing head 11. For a relative density of 0.15g / mm 2 The metal rubber requires a maximum punching force of 355N, and the force required for punching is not large. The punching die 10 is a resin die made by 3D printing.

[0081] After stamping, a hollow cylindrical metal rubber sample is obtained. All process parameters meet the established requirements. The shape of the molded metal rubber is regular and has no burrs. Then, multiple quantities of metal rubber are prepared with different process parameters, and their appearance is basically stable. This shows that the above-mentioned preparation and molding method and the equipment scheme used can realize the automated preparation of metal rubber.

[0082] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0083] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and exemplary embodiments. They can be applied to a variety of fields suitable for the present invention. Further modifications will be readily apparent to those skilled in the art. Therefore, the present invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims

1. A method for producing a composite metal rubber, characterized in that: The following steps are involved: Determine the size and parameters of the metal rubber substrate to be prepared and the size and parameters of the metal rubber tube cloth to be prepared according to the size and parameters of the metal rubber to be prepared; Selecting corresponding metal wires according to the size and parameters of the metal rubber substrate to be prepared, preparing the selected metal wires into spiral coils, and then winding the spiral coils layer by layer to form a blank substrate; Selecting corresponding metal wires according to the size and parameters of the metal rubber tubular cloth to be prepared, and weaving the selected metal wires into tubular cloth; Covering and wrapping the tubular cloth on the blank base to form a metal rubber blank; The metal rubber blank is placed in a mold and stamped into metal rubber.

2. A method for producing a composite metal rubber according to claim 1, characterized in that: Obtain the value of the braiding ratio of the metal rubber to be prepared and the mass of the metal rubber to be prepared, and calculate the mass of the spiral roll and the mass of the tube cloth using the following formula: ， For the braiding ratio, is the mass of the spiral coil, in g, is the mass of the cloth, in g, is the mass of the metal rubber, in g.

3. The method for producing a composite metal rubber according to claim 1, wherein: The steps of preparing the spiral coil include: The metal wire is fed in a fixed direction, and then the direction of movement of the metal wire is changed by the first force, causing the metal wire to deform for the first time; Then, the deformed metal wire is subjected to a second force, so that the metal wire is deformed and bent for the second time; Thus, the wire gradually turns into a spiral coil under the continuous input of the wire.

4. A method for producing a composite metal rubber according to claim 3, characterized in that: The pitch of the spiral coil is adjusted by changing the angle at which the metal wire is subjected to the second force and the plane distance between the first force point and the second force point of the metal wire.

5. The method for producing a composite metal rubber according to claim 3, wherein: Adjust the straight-line distance between the second stress point of the metal wire and the center of the spiral roll to change the outer diameter of the spiral roll.

6. The method for producing a composite metal rubber according to claim 1, wherein: When the spiral coils are wound layer by layer, the angle between two adjacent spiral coils is between 80° and 100°.

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