A rolling device for producing metal sintered mesh

Abstract

The present invention provides a rolling device for producing sintered metal mesh, which relates to the field of metal rolling technology. After being unwound by an unwinding assembly, the metal mesh passes through a gap between two heated rollers to be heated, then passes through a gap between two rolling rollers to be rolled, and finally is retracted by a rewinding assembly. Because the metal wires of the metal mesh have protrusions at their intersections, the protruding portions of the metal mesh are heated and softened by the heated rollers, and then the protruding portions of the metal mesh are rolled by the rolling rollers. During the rolling process, the deformation of the metal wires replaces the relative movement that should have occurred, reducing the change in the mesh shape of the metal mesh, preventing the mesh from being severely flattened or excessively stretched and expanded, and improving the uniformity of the metal mesh's pore size distribution, the consistency of the metal mesh structure, and its key filtering or diffusion performance indicators. At the same time, a snap-fit ​​fixing structure is formed on the protruding portions of the metal mesh, making it less likely that the rolled metal mesh will have further pore size changes due to external forces.

Description

Technical Field

[0001] The invention relates to the technical field of metal rolling, in particular to a rolling device for producing metal sintered mesh. Background Art

[0002] As a high-performance porous material, sintered metal mesh is widely used in high-temperature filtration, gas diffusion, and noise reduction due to its excellent high-temperature stability, mechanical strength, and designable filtration accuracy, such as in chemical processes and automobile exhaust purification systems. Its core manufacturing process involves stacking multiple layers of metal woven mesh and sintering them under high-temperature vacuum to form a strong metallurgical bonding layer. In order to optimize the performance of sintered metal mesh, especially to improve its density, flatness, and mechanical properties, it is often necessary to roll and press the metal mesh raw materials through a multi-roll mill before sintering. By applying high pressure to the metal mesh, it undergoes plastic deformation, thereby thinning the mesh layer and reducing the gap between layers, thereby improving the uniformity of the overall structure.

[0003] The metal mesh is essentially a mesh structure woven from fine metal wires in warp and weft, with protrusions formed at the intersection of the metal wires. Under the local high-pressure contact of the rolling rollers, the metal wires are prone to relative movement, resulting in irregular changes in the shape of the mesh, and even causing the mesh to be severely flattened or over-stretched, thereby affecting the uniformity of the metal mesh's pore size distribution, destroying the consistency of the metal mesh structure and its key filtration or diffusion performance indicators. In addition, the rolled metal mesh is also prone to further changes in pore size due to external forces.

[0004] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0005] Based on this, it is necessary to provide a rolling device for producing metal sintered mesh to address the problems existing in the current metal mesh rolling device.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A rolling device for producing metal sintered mesh comprises a support and a unwinding assembly and a winding assembly arranged on the support, wherein the unwinding assembly is used to unwind the metal mesh, and the winding assembly is used to retract the metal mesh; a heating assembly and a rolling assembly are sequentially arranged between the unwinding assembly and the winding assembly, wherein the heating assembly comprises two parallel and spaced heating rollers, and the metal mesh is heated by passing through the gap between the two heating rollers; and the rolling assembly comprises two parallel and spaced rolling rollers, and the metal mesh is rolled by passing through the gap between the two rolling rollers.

[0008] Furthermore, the two heating rollers are distributed in sequence along their radial direction, and the distribution direction of the two heating rollers is a preset direction, and the two rolling rollers are arranged in sequence in the preset direction; when the resistance value between the rolling rollers and the metal mesh is greater than the preset value, the two heating rollers and the two rolling rollers are relatively far away from each other in the preset direction to increase the contact area between the metal mesh and the heating rollers.

[0009] Furthermore, a driving shaft is provided on the bracket, and a universal coupling and a connecting piece are connected in sequence between the driving shaft and the rolling roller to drive the rolling roller to rotate; the two ends of the connecting piece can rotate relative to each other along the circumference of the rolling roller, and have a first position and a second position before and after rotation. When the connecting piece is in the first position, the driving shaft drives the rolling roller to rotate through the universal coupling and the connecting piece. When the connecting piece is in the second position, the universal coupling and the rolling roller generate relative rotation, and the resistance value between the rolling roller and the metal mesh is greater than the preset value.

[0010] Furthermore, a first telescopic member is provided on the bracket, and the first telescopic member is used to make the two rolling rollers move synchronously in the preset direction; a cam is provided on the rolling roller, and the rotation center of the cam coincides with the axis of the rolling roller; a travel switch is provided on the connecting member, and the travel switch has a contact; the working surface of the cam has a first section and a second section; when the cam rotates to the first section and contacts the contact, the first telescopic member is stationary; when the cam rotates to the second section and contacts the contact and causes the contact to move, the first telescopic member drives the two rolling rollers to move in the preset direction.

[0011] Furthermore, the first stroke is positively correlated with the second stroke. The first stroke is the stroke in which the first telescopic member drives the two rolling rollers to move in the preset direction. The second stroke is the stroke in which the second section contacts the contact and causes it to move.

[0012] Furthermore, the first telescopic member drives the two rolling rollers to move in the preset direction at a first speed and a second speed successively, and the first speed is greater than the second speed.

[0013] Furthermore, when the first telescopic member drives the two rolling rollers to move in the preset direction, the duration of the first speed is greater than or equal to the duration of the second speed.

[0014] Furthermore, a first support is provided on the bracket for sliding along the preset direction, the two rolling rollers are jointly arranged on the first support, and the output end of the first telescopic member is connected to the first support; a second support is provided on the first support for sliding along the preset direction, one of the rolling rollers is rotatably arranged on the second support, a second telescopic member is provided on the first support, and the output end of the second telescopic member is connected to the second support.

[0015] The beneficial effects of the present invention are as follows: after being unwound by the unwinding assembly, the metal mesh of the present invention passes through the gap between two heating rollers to be heated, then passes through the gap between two rolling rollers to be rolled, and finally is retracted by the winding assembly. Because the metal wires of the metal mesh have protrusions formed at the intersection, the protruding portions of the metal mesh are heated and softened by the heating rollers, and then the protruding portions of the metal mesh are rolled by the rolling rollers. During the rolling process, the deformation of the metal wires replaces the relative movement that should have occurred, reducing the change in the mesh shape of the metal mesh, preventing the mesh from being severely flattened or excessively stretched and expanded, and improving the uniformity of the metal mesh pore size distribution and the consistency of the metal mesh structure and its key filtering or diffusion performance indicators. At the same time, a snap-fit ​​fixing structure is formed on the protruding portions of the metal mesh, making it less likely that the rolled metal mesh will have further changes in pore size due to external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a rolling device for producing a sintered metal mesh according to an embodiment of the present invention;

[0017] Figure 2 for Figure 1 A top view of

[0018] Figure 3 It is a schematic diagram of the structure of the heating component and the rolling component;

[0019] Figure 4 for Figure 3 Front view of the rolling assembly;

[0020] Figure 5 for Figure 4 Side view of the mid-rolling assembly;

[0021] Figure 6 for Figure 5 AA cross-sectional view of the rolled component;

[0022] Figure 7 for Figure 6 A partial enlarged view of point B in the middle;

[0023] Figure 8 Exploded view of the parts of the rolled assembly;

[0024] Figure 9 for Figure 3Schematic diagram of the local structure.

[0025] in:

[0026] 100, bracket; 101, unwinding assembly; 102, rewinding assembly; 103, heating assembly; 104, heating roller;

[0027] 200. Rolling assembly; 201. Rolling roller; 202. Driving shaft; 203. Universal joint; 204. Connecting piece; 205. Connecting end; 206. Connecting cylinder; 207. First telescopic piece; 208. Cam; 209. Travel switch; 210. Contact; 211. First support; 212. Second support; 213. Second telescopic piece; 214. First crossbar; 215. Vertical bar; 216. Lifting assembly; 217. Second crossbar. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0030] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0031] like Figures 1 to 9As shown, an embodiment of the present invention provides a rolling device for producing metal sintered mesh, including a bracket 100 and a unwinding assembly 101 and a winding assembly 102 arranged on the bracket 100, the unwinding assembly 101 is used to unwind the metal mesh, and the winding assembly 102 is used to retract the metal mesh, and a heating assembly 103 and a rolling assembly 200 are sequentially arranged between the unwinding assembly 101 and the winding assembly 102, the heating assembly 103 includes two parallel and spaced heating rollers 104, and the metal mesh is heated by passing through the gap between the two heating rollers 104, and the rolling assembly 200 includes two parallel and spaced rolling rollers 201, and the metal mesh is rolled by passing through the gap between the two rolling rollers 201.

[0032] After being unwound by the unwinding assembly 101, the metal mesh passes through the gap between two heated rollers 104 to be heated, then passes through the gap between two rolling rollers 201 to be rolled, and finally is reeled in by the winding assembly 102. Because the metal wires of the metal mesh have protrusions at their intersections, the protruding portions of the metal mesh are heated and softened by the heated rollers 104, and then rolled by the rolling rollers 201. During the rolling process, the deformation of the metal wires replaces the relative movement that would otherwise occur, reducing the change in the mesh shape of the metal mesh and preventing the mesh from being severely flattened or excessively stretched. This improves the uniformity of the metal mesh's pore size distribution, the consistency of the metal mesh's structure, and its key filtering or diffusion performance indicators. At the same time, a snap-fit ​​fixing structure is formed on the protruding portions of the metal mesh, making it less likely that the rolled metal mesh will have its pore size further changed due to external forces.

[0033] The unwinding assembly 101 includes a motor, an unwinding shaft, and a tensioning shaft. The motor rotates, driving the unwinding shaft to unwind the wound metal mesh, which is then tensioned via the tensioning shaft. Similarly, the rewinding assembly 102 also includes a motor, a rewinding shaft, and a tensioning shaft. The rewinding shaft can rotate in the opposite direction of the unwinding shaft to retract the rolled metal mesh. The motors of both unwinding and rewinding assemblies 101 and 102 are equipped with corresponding power supplies and controllers for start and stop control. The heating roller 104 is made of high-strength alloy steel and is a hollow structure designed to accommodate a heating element. The heating element can be electrically heated, such as an electric heating tube or coil, with a controller to adjust the power supply for precise temperature control; fluid heated, such as thermal oil or steam, with a corresponding circulation system and control valve; or other heating elements to achieve heating of the metal mesh. The structures and working principles of the unwinding assembly 101, the winding assembly 102 and the heating roller 104 are all prior art and will not be described in detail here.

[0034] In one embodiment, the two heating rollers 104 are distributed in sequence along their radial direction, and the distribution direction of the two heating rollers 104 is a preset direction, and the two rolling rollers 201 are arranged in sequence in the preset direction; when the resistance value between the rolling roller 201 and the metal mesh is greater than the preset value, the two heating rollers 104 and the two rolling rollers 201 are relatively far away from each other in the preset direction to increase the contact area between the metal mesh and the heating roller 104.

[0035] Due to different metal mesh materials or a gap error between the two heating rollers 104, insufficient contact between the heating rollers 104 and the metal mesh may occur, which can easily reduce the heating effect of the heating rollers 104 on the metal mesh. As a result, the metal mesh remains relatively hard after passing through the heating rollers 104. When the rolling rollers 201 roll the harder metal mesh, the resistance between them increases, thereby reducing the rolling effect on the metal mesh. When the resistance between the rolling rollers 201 and the metal mesh exceeds a preset value, the two heating rollers 104 and the two rolling rollers 201 move away from each other in a preset direction, and the metal mesh and the heating rollers 104 transition from line contact to arcuate contact, thereby increasing the contact area between the metal mesh and the heating rollers 104 and improving the heating effect of the heating rollers 104 on the metal mesh, thereby avoiding the above-mentioned problem.

[0036] Furthermore, as the resistance between the rolling rollers 201 and the metal mesh increases, the resistance between the heating rollers 104 and the metal mesh remains essentially constant. Consequently, the metal mesh between the heating rollers 104 and the rolling rollers 201 gradually relaxes, similarly affecting the rolling effect on the metal mesh. By controlling the relative distance between the two heating rollers 104 and the two rolling rollers 201 in a predetermined direction, the contact area between the metal mesh and the heating rollers 104 is increased while the previously relaxed metal mesh is straightened and tightened, ensuring a more effective rolling effect on the metal mesh.

[0037] The preset direction may be a vertical direction.

[0038] In one embodiment, a driving shaft 202 is provided on the bracket 100, and a universal coupling 203 and a connecting member 204 are connected in sequence between the driving shaft 202 and the rolling roller 201 to drive the rolling roller 201 to rotate; the two ends of the connecting member 204 can rotate relative to each other along the circumference of the rolling roller 201, and have a first position and a second position before and after the rotation. When the connecting member 204 is in the first position, the driving shaft 202 drives the rolling roller 201 to rotate through the universal coupling 203 and the connecting member 204. When the connecting member 204 is in the second position, the universal coupling 203 and the rolling roller 201 generate relative rotation, and the resistance value between the rolling roller 201 and the metal mesh is greater than the preset value.

[0039] When the connecting member 204 is in the first position, the driving shaft 202, the universal coupling 203, the connecting member 204 and the rolling roller 201 rotate synchronously, indicating that the current resistance value between the rolling roller 201 and the metal mesh is less than the preset value, the heating roller 104 is in full contact with the metal mesh, and the heating roller 104 has a better heating effect on the metal mesh; when the connecting member 204 is in the second position, the universal coupling 203 and the rolling roller 201 rotate relative to each other, that is, the rolling roller 201 rotates later than the universal coupling 203, indicating that the current resistance value between the rolling roller 201 and the metal mesh is greater than the preset value. At this time, the two heating rollers 104 and the two rolling rollers 201 are relatively far away from each other in the preset direction to increase the contact area between the metal mesh and the heating roller 104.

[0040] The universal joint 203 and the rolling roller 201 generate relative rotation to display the resistance value between the rolling roller 201 and the metal mesh.

[0041] Among them, the connecting member 204 has a spring-like structure, but its diameter is thicker and it is closer in the axial direction. It can be understood that the connecting member 204 basically does not undergo axial expansion and contraction, and only undergoes a small relative twisting in its circumferential direction, that is, as mentioned above: the two ends of the connecting member 204 can rotate relative to each other along the circumference of the rolling roller 201.

[0042] The bracket 100 is equipped with a motor, a reducer, and a corresponding power supply and controller for driving the driving shaft 202. Of course, the bracket 100 is also equipped with a motor, a reducer, and a corresponding power supply and controller for driving the heating roller 104. The universal joint 203 includes: connecting ends 205 at both ends, one of which is secured to the driving shaft 202 via a keyway and screws, and the other connecting end 205 is secured to a connecting cylinder 206. The connecting member 204 is disposed within the connecting cylinder 206, which is sleeved onto the rotating shaft of the rolling roller 201; two intermediate shafts, whose inner ends are connected via splines and spline grooves to achieve telescopic movement; and a cross shaft, the outer end of which is rotatably connected to the ends of one shaft of the cross shaft, and the connecting end 205 is rotatably connected to the ends of the other shaft of the cross shaft, to achieve cross-rotation between the intermediate shaft and the connecting end 205, thereby achieving non-coaxial transmission between the rolling roller 201 and the driving shaft 202. The structure and operating principle of the universal joint 203 are conventional and will not be described in detail here.

[0043] In one embodiment, see Figure 7A first telescopic member 207 is provided on the bracket 100, and the first telescopic member 207 is used to make the two rolling rollers 201 move synchronously in a preset direction; a cam 208 is provided on the rolling roller 201, and the rotation center of the cam 208 coincides with the axis of the rolling roller 201. A travel switch 209 is provided on the connecting member 204, and the travel switch 209 has a contact 210. The working surface of the cam 208 has a first section and a second section. When the cam 208 rotates to the first section and contacts the contact 210, the first telescopic member 207 is stationary. When the cam 208 rotates to the second section and contacts the contact 210 and moves the contact 210, the first telescopic member 207 drives the two rolling rollers 201 to move in the preset direction.

[0044] Initially, the first section of the working surface of the cam 208 contacts the contact 210. At this time, the first telescopic member 207 is stationary, the two rolling rollers 201 are stationary in the preset direction, and the two heating rollers 104 and the two rolling rollers 201 are relatively stationary in the preset direction; when the resistance value between the rolling rollers 201 and the metal mesh increases to greater than the preset value, the universal joint 203 and the rolling rollers 201 rotate relative to each other, causing the cam 208 to rotate to the second section to contact the contact 210 and move it, and at the same time, the first telescopic member 207 drives the two rolling rollers 201 to move in the preset direction, so that the two heating rollers 104 and the two rolling rollers 201 are relatively far away from each other in the preset direction.

[0045] The first telescopic member 207 can be a linear motion mechanism such as a hydraulic cylinder or an electric push rod, which has a controller, and the limit switch 209 also has a controller. The bracket 100 can be provided with a processor, which is connected to the controllers of the first telescopic member 207 and the limit switch 209 at the same time. The processor can control the telescopic position of the output end of the first telescopic member 207 according to the position of the contact 210. The above control principles, implementation methods, and the structure of the limit switch 209 are all prior art and are not described in detail here. The cam 208 is provided at the end of the rotating shaft of the rolling roller 201, and the cam 208 is located in the connecting cylinder 206. The limit switch 209 is provided on the side wall of the connecting cylinder 206, and the contact 210 can be extended and retracted along the radial direction of the rolling roller 201.

[0046] In one embodiment, the first stroke is positively correlated with the second stroke. The first stroke is the stroke in which the first telescopic member 207 drives the two rolling rollers 201 to move in a preset direction, and the second stroke is the stroke in which the second section contacts the contact 210 and causes it to move.

[0047] The greater the resistance value between the rolling roller 201 and the metal mesh, the greater the relative rotation angle between the universal coupling 203 and the rolling roller 201, and the greater the second stroke; by increasing the stroke of the two rolling rollers 201 moving in the preset direction, that is, the first stroke, the contact area between the metal mesh and the heating roller 104 is increased, thereby reducing the resistance value between the rolling roller 201 and the metal mesh, so that the heating and rolling process returns to normal, and the contact area between the metal mesh and the heating roller 104 is adjusted according to the resistance value between the rolling roller 201 and the metal mesh.

[0048] Among them, the processor can proportionally amplify the second stroke to the first stroke. The specific amplification ratio can be set according to the actual application. For example, the second stroke can be 1mm to 5mm, and the first stroke can be 10mm to 50mm. Of course, it can also be other proportional relationships, which is not limited here.

[0049] In one embodiment, the first telescopic member 207 drives the two rolling rollers 201 to move in a preset direction at a first speed and a second speed in sequence, and the first speed is greater than the second speed.

[0050] When the resistance between the rolling rollers 201 and the metal mesh increases, the first telescopic member 207 drives the two rolling rollers 201 to move in a preset direction at a larger first speed, so as to quickly straighten and tighten the originally loose metal mesh, thereby ensuring the rolling effect on the metal mesh; when the metal mesh is close to being straightened and tightened, the first telescopic member 207 drives the two rolling rollers 201 to move in the preset direction at a smaller second speed again, thereby avoiding the metal mesh from breaking due to excessive speed.

[0051] Among them, the first speed is several times the second speed. It can be understood that the first speed is much greater than the second speed. The relationship between the first speed and the second speed can also be achieved by setting a control program of the processor.

[0052] In one embodiment, when the first telescopic member 207 drives the two rolling rollers 201 to move in a preset direction, the duration of the first speed is greater than or equal to the duration of the second speed.

[0053] Ensure that the stroke of the two rolling rollers 201 driven by the first telescopic member 207 to move in the preset direction at a larger first speed is greater than the stroke of the two rolling rollers 201 driven by the first telescopic member 207 to move in the preset direction at a smaller second speed.

[0054] In one embodiment, see Figure 8 、 Figure 9A first support 211 is provided on the bracket 100 for sliding along a preset direction, and two rolling rollers 201 are jointly arranged on the first support 211, and the output end of the first telescopic member 207 is connected to the first support 211; a second support 212 is provided on the first support 211 for sliding along a preset direction, and one of the rolling rollers 201 is rotatably arranged on the second support 212, and a second telescopic member 213 is provided on the first support 211, and the output end of the second telescopic member 213 is connected to the second support 212.

[0055] The two rolling rollers 201 are driven to move together in a preset direction by the first telescopic member 207 to adjust the relative distance between the two heating rollers 104 and the two rolling rollers 201 in the preset direction; or one of the rolling rollers 201 is driven to move in the preset direction by the second telescopic member 213 to adjust the distance between the two rolling rollers 201.

[0056] The first telescopic member 207 is fixed to the bracket 100. The output end of the first telescopic member 207 is arranged upward and connected to a first crossbar 214. Both ends of the first crossbar 214 are connected to a vertical rod 215. The lower end of the vertical rod 215 is connected to a second crossbar 217. The second crossbar 217 is connected to the first support 211. When the output end of the first telescopic member 207 is extended or retracted, the first support 211 is driven up and down by the first crossbar 214, the vertical rod 215, and the second crossbar 217. The second telescopic member 213 can also be a linear motion mechanism such as a hydraulic cylinder or an electric push rod, which has a controller. Four second telescopic members 213 are provided, located at the four corners of the bottom of the first support 211, to improve the stability of the second support 212 sliding along a preset direction.

[0057] In addition, in addition to the heating function, the other structures of the heating roller 104 can be the same as those of the rolling roller 201. For example, the two heating rollers 104 can also move along a preset direction, and the distance between the two heating rollers 104 can also be adjusted.

[0058] In one embodiment, a lifting assembly 216 is provided on the bracket 100 , and the lifting assembly 216 is used to support and lift the first support 211 and the two rolling rollers 201 .

[0059] The lifting assembly 216 lifts the first support 211 to a certain height in a preset direction and maintains support, and then installs the two rolling rollers 201 and the second telescopic member 213 on the first support 211. After that, the supporting force of the lifting assembly 216 is removed, and the installation is more labor-saving.

[0060] Lift assembly 216 is a scissor-type lift mechanism, comprising a cross arm that converts horizontal thrust or pull into vertical lifting motion; a top plate that supports the load and maintains a horizontal position during the lifting process; a hydraulic cylinder that provides linear thrust or pull to drive the cross arm's deformation; and a chute and guide rail that ensure the cross arm follows a predetermined trajectory when expanding or contracting, preventing deviation. The structure and operating principle of lift assembly 216 are conventional and will not be elaborated on here.

[0061] In one embodiment, the lifting assembly 216 is detachably mounted on the bracket 100 .

[0062] When the present invention is in use, the metal mesh is unwound by the unwinding assembly 101, passes through the gap between two heating rollers 104 to be heated, then passes through the gap between two rolling rollers 201 to be rolled, and finally is retracted by the winding assembly 102. Because the metal wires of the metal mesh have protrusions at the intersection, the protruding parts of the metal mesh are heated and softened by the heating rollers 104, and then the protruding parts of the metal mesh are rolled by the rolling rollers 201. During the rolling process, the deformation of the metal wires replaces the relative movement that should have occurred, reducing the change in the mesh shape of the metal mesh, preventing the mesh from being severely flattened or excessively stretched and expanded, and improving the uniformity of the metal mesh pore size distribution and the consistency of the metal mesh structure and its key filtering or diffusion performance indicators. At the same time, a snap-fit ​​fixing structure is formed on the protruding parts of the metal mesh, making it less likely that the pore size of the rolled metal mesh will change further due to external forces.

[0063] In addition, due to different metal mesh materials or a gap error between the two heating rollers 104, insufficient contact between the heating rollers 104 and the metal mesh can reduce the heating effect of the heating rollers 104 on the metal mesh. This can cause the metal mesh to remain relatively hard after passing through the heating rollers 104. When the rolling rollers 201 roll the harder metal mesh, the resistance between them increases, reducing the rolling effect on the metal mesh. This problem is solved by delaying the rotation of the rolling rollers 201 and the driving shaft 202. Specifically: initially, the first section of the working surface of the cam 208 contacts the contact 210, and the driving shaft 202, the universal coupling 203, the connecting piece 204 and the rolling roller 201 rotate synchronously, indicating that the current resistance value between the rolling roller 201 and the metal mesh is less than the preset value, the heating roller 104 is in full contact with the metal mesh, and the heating roller 104 has a good heating effect on the metal mesh. At this time, the first telescopic member 207 is stationary, the two rolling rollers 201 are stationary in the preset direction, and the two heating rollers 104 and the two rolling rollers 201 are relatively stationary in the preset direction; when the resistance value between the rolling roller 201 and the metal mesh increases to greater than the preset value, When the value is set, the universal coupling 203 and the rolling roller 201 produce relative rotation, causing the cam 208 to rotate to the second section and contact the contact 210 to move, that is, the rolling roller 201 rotates later than the universal coupling 203. At the same time, the first telescopic member 207 drives the two rolling rollers 201 to move in a preset direction, so that the two heating rollers 104 and the two rolling rollers 201 are relatively far away from each other in the preset direction, and the metal mesh and the heating roller 104 are transformed from line contact to arc surface contact to increase the contact area between the metal mesh and the heating roller 104, thereby reducing the resistance value between the rolling roller 201 and the metal mesh, and returning the heating and rolling process to normal.

[0064] After rolling, multiple layers of metal mesh are stacked, adhesive is added, and placed in a sintering device to form a sintered mesh.

[0065] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A rolling device for producing metal sintered mesh, characterized in that: The invention comprises a support and an unwinding assembly and a winding assembly arranged on the support, wherein the unwinding assembly is used to unwind the metal mesh, and the winding assembly is used to retract the metal mesh. A heating assembly and a rolling assembly are sequentially arranged between the unwinding assembly and the winding assembly. The heating assembly comprises two parallel and spaced heating rollers, and the metal mesh is heated by passing through the gap between the two heating rollers. The rolling assembly comprises two parallel and spaced rolling rollers, and the metal mesh is rolled by passing through the gap between the two rolling rollers. The two heating rollers are sequentially distributed along their radial directions, and the distribution direction of the two heating rollers is a preset direction. The two rolling rollers are sequentially arranged in the preset direction. When the resistance value between the rolling rollers and the metal mesh is greater than a preset value, the two heating rollers and the two rolling rollers are relatively separated in the preset direction to increase the contact area between the metal mesh and the heating rollers. The bracket is provided with a driving shaft, and a universal coupling and a connecting member are sequentially connected between the driving shaft and the rolling roller to drive the rolling roller to rotate; the two ends of the connecting member can rotate relative to each other along the circumference of the rolling roller, and have a first position and a second position before and after rotation. When the connecting member is in the first position, the driving shaft drives the rolling roller to rotate through the universal coupling and the connecting member. When the connecting member is in the second position, the universal coupling and the rolling roller generate relative rotation, and the resistance value between the rolling roller and the metal mesh is greater than the preset value; The bracket is provided with a first telescopic member, which is used to make the two rolling rollers move synchronously in the preset direction; the rolling roller is provided with a cam, and the rotation center of the cam coincides with the axis of the rolling roller; the connecting member is provided with a travel switch, and the travel switch has a contact; the working surface of the cam has a first section and a second section; when the cam rotates to the first section and contacts the contact, the first telescopic member is stationary; when the cam rotates to the second section and contacts the contact and causes the contact to move, the first telescopic member drives the two rolling rollers to move in the preset direction.

2. The rolling device for producing sintered metal mesh according to claim 1, characterized in that: The first stroke is positively correlated with the second stroke. The first stroke is the stroke in which the first telescopic member drives the two rolling rollers to move in the preset direction. The second stroke is the stroke in which the second section contacts the contact and causes it to move.

3. The rolling device for producing sintered metal mesh according to claim 1, characterized in that: The first telescopic member drives the two rolling rollers to move in the preset direction at a first speed and a second speed in sequence, and the first speed is greater than the second speed.

4. The rolling device for producing sintered metal mesh according to claim 3, characterized in that: When the first telescopic member drives the two rolling rollers to move in the preset direction, the duration of the first speed is greater than or equal to the duration of the second speed.

5. The rolling device for producing sintered metal mesh according to claim 1, characterized in that: A first support is provided on the bracket so as to slide along the preset direction, the two rolling rollers are jointly arranged on the first support, and the output end of the first telescopic member is connected to the first support; a second support is provided on the first support so as to slide along the preset direction, one of the rolling rollers is rotatably arranged on the second support, a second telescopic member is provided on the first support, and the output end of the second telescopic member is connected to the second support.

6. The rolling device for producing sintered metal mesh according to claim 5, characterized in that: The bracket is provided with a lifting assembly, and the lifting assembly is used to support and lift the first support and the two rolling rollers.

7. The rolling device for producing sintered metal mesh according to claim 6, characterized in that: The lifting assembly is detachably mounted on the bracket.

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