Hot extrusion forming processing device and method for metal net

Abstract

The invention relates to the technical field of hot extrusion devices, and provides a hot extrusion forming machining device and method for a metal net, the device comprises a rack, and a lower hot pressing plate is arranged on the rack; the bearing seat is detachably connected to the lower hot pressing plate; the plurality of side plates are arranged on the bearing seat in a sliding manner; the bearing frame is arranged on the bearing base in a lifting mode, and after the side plate is configured to be close to the bearing base, the bearing frame can ascend to bear the metal net so that the metal net can be demolded. The invention further provides a hot extrusion forming processing method of the metal net. By means of the technical scheme, the technical problem that in the prior art, after a metal net is hot-pressed, transverse expansion occurs, and consequently demolding needs to consume a certain amount of energy is solved. The sliding guide structures of the side plates and the lifting driving mechanism of the bearing frame are both in a mechanical transmission mode, automatic control can be achieved through a control system, manual intervention is reduced, and the continuity of the hot press forming and demolding process is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of hot extrusion devices, and in particular, to a hot extrusion forming processing device and method for a metal mesh. Background Art

[0002] When preparing metal sintered mesh by vacuum hot pressing sintering process, multiple layers of metal mesh should be stacked neatly. The gradient distribution of pore size and structural combination of multiple layers of metal mesh determine the filtration accuracy, compressive strength and porosity of the sintered body. If the layers of metal mesh are misaligned or skewed when stacked, the following problems will occur: the intersections of warp and weft of each layer of metal mesh cannot form an orderly combination, and local pore blockage or connected channel deviation will occur after sintering, affecting fluid filtration. The misalignment between layers causes stress concentration, and delamination failure or fatigue fracture is prone to occur during use. For example, for sintered mesh used for aerospace oil line filtration, if the stacking deviation exceeds 0.1mm, the nominal filtration accuracy will increase from the designed 50μm to 80μm, which cannot meet the system cleanliness requirements. During the sintering process of the metal mesh, the growth of the sintering neck of the metal wire between the layers of the multi-layer stacked metal mesh generates a lateral expansion force. When the mesh holes are arranged orthogonally, the intersections of the warp and weft wires are sintered to form a mesh support structure, which expands in all directions at high temperatures. In order to ensure that the multi-layer metal mesh is arranged neatly during hot pressing, the existing mold uses a cavity size that is the same as the initial size of the metal mesh. The compression deformation of the metal mesh in the thickness direction is converted into lateral expansion, causing Xu Yu to spend a certain amount of effort to separate the metal mesh from the mold. Summary of the invention To overcome the above defects, the embodiments of the present invention provide a hot extrusion molding processing device and method for a metal mesh, which solves the technical problem in the prior art that the metal mesh expands laterally after hot pressing, resulting in a certain amount of effort required for demolding.

[0003] According to one aspect, at least one embodiment of the present invention provides A hot extrusion forming processing device for a metal mesh, comprising a frame and a lower hot pressing plate and an upper hot pressing plate arranged on the frame; A mold, comprising: A supporting seat, detachably connected to the lower hot pressing plate; There are a plurality of side plates, all of which are slidably arranged on the side of the support seat in a horizontal direction, and the side plates are configured to slide closer to or farther from the support seat, and a plurality of the side plates can enclose with the support seat to form a receiving space located above the support seat to receive the metal mesh; The supporting frame is lifted and lowered on the side plate and sleeved on the upper periphery of the supporting seat. The supporting frame can move upward to protrude from the top surface of the supporting seat and lift the metal mesh to demold the metal mesh, or move downward and drive the metal mesh to descend to unload the metal mesh and transport it to the supporting seat.

[0004] For example, at least one embodiment of the present invention provides a hot extrusion forming device for a metal mesh, further comprising: There are several connecting rods, one end of which is hinged on the supporting frame and the other end is hinged on the side plate. The connecting rod is configured to slide along the side plate to a side away from the supporting seat and drive the supporting frame to descend.

[0005] For example, in a hot extrusion forming device for a metal mesh provided by at least one embodiment of the present invention, The side plate has a first vertical section and an inclined section located above the first vertical section, the inclined section extends outwardly from bottom to top, and the upper hot pressing plate can move downward to abut against the inclined section to drive the side plate to slide to the side away from the supporting seat.

[0006] For example, in a hot extrusion forming processing device for a metal mesh provided in at least one embodiment of the present invention, there are a plurality of support frames distributed along the circumference of the support seat, and the support frame is located between the side plate and the side wall of the support seat, and the side plate is configured to be able to approach the support seat and abut against the edge of the metal mesh to center the metal mesh.

[0007] For example, in a hot extrusion forming processing device for a metal mesh provided by at least one embodiment of the present invention, a mounting groove is provided on the inner wall of the side plate, the mounting groove has an opening, the height of the opening is smaller than the height of the mounting groove, a centering plate is swingably arranged in the mounting groove, the centering plate and the inner wall of the mounting groove are rotatably connected by a rotating shaft, a first elastic member is sleeved on the rotating shaft, and the centering plate can extend out of the opening and abut against the edge of the metal under the drive of the elastic force of the first elastic member to center the metal mesh.

[0008] For example, in a hot extrusion forming processing device for a metal mesh provided by at least one embodiment of the present invention, the support frame has a protrusion on the side away from the support seat, and the centering plate has a first bending section, a second vertical section and a second bending section arranged in sequence from top to bottom, and the first bending section and the second bending section are both expanded outward at one end away from the second vertical section, and the support frame is configured to drive the metal mesh to be unloaded onto the support seat, and the protrusion can abut against the first bending section so that the first bending section avoids the metal mesh, and the protrusion is configured to be able to move downward and disengage from the second vertical section under the drive of the support frame, so that the second vertical section can approach and abut against the metal mesh under the drive of the first elastic member to center the metal mesh.

[0009] For example, in a hot extrusion forming processing device for a metal mesh provided in at least one embodiment of the present invention, the side of the supporting seat has a transverse slide groove opening outward, and the side plate has a horizontal section, and the horizontal section is slidably arranged in the transverse slide groove.

[0010] For example, in a hot extrusion forming processing device for a metal mesh provided by at least one embodiment of the present invention, the supporting seat has an upper part and a lower part, the supporting frame and the upper part bear pressure together, the lower part has a supporting end face, the supporting end face has a vertical guide hole, the vertical guide hole is connected to the horizontal slide groove and is located above the horizontal slide groove, the supporting frame has a guide column on the bottom surface, the lower end of the connecting rod is hinged to the horizontal section, and the lower end is hinged to the guide column.

[0011] For example, at least one embodiment of the present invention provides a hot extrusion forming device for a metal mesh, further comprising: A second elastic member is sleeved on the outer circumference of the guide column, and one end is arranged on the inner wall of the vertical guide hole, and the other end is arranged on the supporting frame. The second elastic member is used to elastically push the supporting frame to move up and demould with the help of the supporting frame, and drive the side plate to approach the supporting frame.

[0012] A hot extrusion forming method for a metal mesh, the steps of processing the metal mesh by a hot pressing forming device are as follows: S1. Install the mold on the lower hot pressing plate: detachably install the supporting seat on the lower hot pressing plate, the inner side wall of the side plate abuts against the supporting frame, the side plate and the supporting seat are installed to form a receiving space for receiving the metal mesh, and the multi-layer metal mesh is stacked on the supporting frame. The upper hot pressing plate descends and presses against the inclined section of the side plate to drive the side plate to slide away from the supporting seat, and the supporting frame drives the metal mesh to descend until the bottom surface of the multi-layer metal mesh is supported by the supporting seat and the supporting frame. S2. Place the metal mesh on the support seat and center it: the side plate slides away from the support seat, and the center plate swings to the opening extending out of the side plate under the action of the first elastic member, and abuts against the edge of the metal mesh so that the multiple layers of metal mesh are centered; S3, hot pressing forming: the support frame moves down until its top surface is flush with the top surface of the support seat, and the upper hot pressing plate continues to descend and cooperates with the support seat to hot press the metal mesh; S4, demoulding preparation: after the hot pressing is completed, the upper hot pressing plate rises and resets, the side plate slides toward the side close to the supporting seat under the action of the second elastic member and the connecting rod, and the supporting frame rises to a top surface higher than the top surface of the supporting seat under the elastic force of the second elastic member; S5. Demoulding and unloading: the supporting frame moves upward and lifts the metal mesh to detach from the supporting seat to unload the metal mesh.

[0013] The beneficial effects of the embodiments of the present invention are: In the present invention, the device effectively solves the problem of difficulty in demolding the metal mesh after hot pressing in the prior art through the structural design and matching relationship of each component, and also solves the problem of squeezing the side walls and side panels of the metal mesh during hot pressing, thereby preventing the metal mesh from becoming defective due to the existence of the side panels. The support seat is detachably connected: the support seat and the lower hot pressing plate adopt a detachable structure, which is convenient for replacing support seats of different specifications and also for taking the metal mesh. The side panels are away from the support seat to eliminate lateral pressure on the metal mesh and avoid demolding resistance caused by lateral expansion of the metal mesh. The support frame and the side panels cooperate in action, and the support frame lifts the metal mesh from the support seat through an upward action, thereby avoiding deformation or damage caused by directly pulling the metal mesh.

[0014] The sliding guide structure of the side panel and the lifting drive mechanism of the supporting frame both adopt mechanical transmission, which can be automatically controlled through a control system (not shown), reducing manual intervention and improving the continuity of the hot pressing and demoulding processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some exemplary embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on the contents of the exemplary embodiments of the present invention and these drawings without creative work.

[0016] Figure 1 It is a schematic structural diagram of a mold of a hot extrusion forming processing device for a metal mesh in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of a partial structure of a mold in an embodiment of the present invention; Figure 3 for Figure 1 A schematic cross-sectional view of a mold in an embodiment of the present invention; Figure 4 for Figure 1 A schematic diagram of the structure of the guide column in the embodiment of FIG. Figure 5 for Figure 1 Schematic diagram of the upper hot pressing plate structure in the embodiment.

[0017] In the figure: 1. frame, 2. lower hot pressing plate, 3. mold, 31. supporting seat, 32. side plate, 33. supporting frame, 4. connecting rod, 5. upper hot pressing plate, 321. first vertical section, 322. inclined section, 323. mounting groove, 324. opening, 6. center plate, 61. protrusion, 62. first bending section, 63. second vertical section, 64. second bending section, 311. horizontal slide groove, 325. horizontal section, 312. vertical guide hole, 326. guide column, 7. second elastic member. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0019] In order to simplify the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0020] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0022] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, 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 a limitation on the present invention.

[0023] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0024] like Figure 1~Figure 5As shown, it shows a hot extrusion forming processing device for a metal mesh in one embodiment of the present invention, the mold 3 includes a supporting seat 31, a side plate 32 and a supporting frame 33, wherein the supporting seat 31 is arranged on the lower hot pressing plate 2 through a detachable connection structure (such as bolt connection, snap connection), so as to facilitate the replacement of the supporting seat 31 according to the processing requirements of metal meshes of different specifications.

[0025] There are multiple side panels 32, and each side panel 32 is slidably arranged on the support seat 31 through a sliding guide structure (such as the horizontal slide groove 311 on the support seat 31 cooperates with the horizontal slider at the bottom of the side panel 32) to approach or move away from the central area (or side wall) of the support seat 31. In the initial state, the support frame 33 is in an ascending state, and the side panel 32 is in a state close to the support seat 31. The side panel 32 and the support seat 31 form a receiving space, and the multi-layer metal mesh can be placed on the support frame 33 (in the receiving space). The receiving space and the metal mesh are the same size. After the metal mesh is placed in the receiving space, it can be just centered. The side panel 32 is away from the support seat 31 to prevent the metal mesh from expanding laterally during hot pressing, and from having an interference fit with the side panel 32, making it difficult to demould.

[0026] The support frame 33 is lifted and lowered on the support seat 31 by a lifting drive mechanism (such as a screw nut mechanism, a cylinder or a hydraulic cylinder arranged inside the support seat 31). The top surface of the support frame 33 and the top surface of the support seat 31 are at the same horizontal plane after the support frame 33 is lowered, and can jointly support the metal mesh. After the hot pressing molding is completed, the side plate 32 slides toward the direction close to the support seat 31, and the support frame 33 rises. After the metal mesh is lifted out of the accommodation space, the side plate 32 is completely close to the support seat 31 to achieve demoulding.

[0027] The working process of the device is as follows: first, the supporting seat 31 is installed on the lower hot pressing plate 2, and the side plate 32 is close to the supporting seat 31 to form a accommodating space, so that the supporting frame 33 is in an upward state; the multiple layers of metal mesh are neatly stacked and placed on the upper end surface of the supporting frame 33, and the upper hot pressing plate 5 is controlled to descend. While descending, it contacts the metal mesh, and the upper hot pressing plate 5 drives the supporting frame 33 to descend. After the supporting frame 33 descends, the supporting frame 33 and the supporting seat 31 jointly support the metal mesh, and cooperate with the upper hot pressing plate 5 to perform hot pressing molding on the metal mesh; after the hot pressing is completed, the upper hot pressing plate 5 rises and resets, and the supporting frame 33 rises through the lifting drive mechanism to lift the metal mesh from the supporting seat 31 to complete the demolding. The device effectively solves the problem of difficulty in demoulding the metal mesh after hot pressing in the prior art through the structural design and matching relationship of each component, and also solves the problem of squeezing the side wall and side plate 32 of the metal mesh during hot pressing, thereby preventing the metal mesh from becoming defective due to the existence of the side plate 32. The support seat 31 is detachably connected: the support seat 31 and the lower hot pressing plate 2 adopt a detachable structure, which is convenient for replacing support seats 31 of different specifications and for loading and unloading the metal mesh. The side plate 32 is away from the support seat 31, eliminating the lateral pressure on the metal mesh and avoiding the demoulding resistance caused by the lateral expansion of the metal mesh. The support frame 33 cooperates with the side plate 32 in action, and the support frame 33 supports the metal mesh from the support seat 31 through an upward action, thereby avoiding deformation or damage caused by directly pulling the metal mesh.

[0028] The sliding guide structure of the side plate 32 and the lifting drive mechanism of the supporting frame 33 both adopt mechanical transmission, and can be automatically controlled by a control system (not shown), thereby reducing manual intervention and improving the continuity of the hot pressing and demoulding processes.

[0029] like Figure 1 As shown, the two ends of the connecting rod 4 are connected to the bottom of the supporting frame 33 and the side plate 32 through a hinge structure, and a horizontal slide groove 311 is provided on the supporting seat 31. The bottom of the side plate 32 is installed in the horizontal slide groove 311 through a sliding component to form a horizontal sliding guide structure. A guide component is set at the bottom of the supporting frame 33, and the guide component passes through the vertical guide hole 312 of the supporting seat 31 and is connected to the connecting rod 4. The connecting rod 4 can be one or more.

[0030] When the support frame 33 is driven to rise by the driving mechanism, the guide component rises synchronously along the vertical guide hole 312, and the side plate 32 is prompted to slide along the horizontal slide groove 311 toward the center of the support seat 31 under the guidance of the sliding component through the connecting rod 4. Only when the support frame 33 drives the metal mesh to move out of the accommodation space, the side plate 32 will slide into place. When the side plate 32 slides toward the direction close to the support seat 31, it will not squeeze the edge of the metal mesh. The top surface of the support frame 33 is higher than the top surface of the support seat 31, and the metal mesh is demoulded after it moves out of the accommodation space. Before hot pressing, the support frame 33 descends, the guide component descends along the vertical guide hole 312, and the connecting rod 4 drives the side plate 32 to slide away from the center of the support seat 31. The top surface of the support frame 33 is flush with the top surface of the support seat 31 so that the metal mesh can be placed. The cross-sectional area of ​​the accommodation space is greater than or equal to the area of ​​the metal mesh. During the hot pressing process, the side plate 32 will not contact the metal mesh.

[0031] The connecting rod 4 converts the horizontal sliding movement of the side plate 32 into the vertical lifting movement of the supporting frame 33, and demoulding can be achieved without an additional power device. The action coordination between the components is achieved through structural design, and the degree of automation of the device is improved.

[0032] Before the supporting frame 33 rises, the side plate 32 is away from the supporting seat 31 to avoid the problem of demoulding force concentration caused by lateral compression, which may cause the metal mesh to be unqualified. The side plate 32 is guided by the sliding part and the lateral slide groove 311, and the supporting frame 33 is guided by the guiding part and the vertical guide hole 312. The two guiding structures cooperate with each other to ensure that the movement trajectory of the connecting rod 4 is along the vertical direction during transmission, reducing wear and shaking between components.

[0033] like Figure 1 and Figure 5 As shown, the upper hot pressing plate 5 is lifted and lowered on the frame 1 through a lifting drive mechanism (such as a screw nut mechanism, a hydraulic cylinder, etc.).

[0034] The side plate 32 has a first vertical section 321 and an inclined section 322 arranged in sequence from bottom to top, and the inclined section 322 expands outward at one end away from the first vertical section 321. The cross-sectional area of ​​the upper hot pressing plate 5 is larger than the cross-sectional area of ​​the supporting end surface composed of the top end surfaces of the supporting seat 31 and the supporting frame 33. When the hot pressing operation is performed, the upper hot pressing plate 5 is driven by the lifting drive mechanism to descend close to the supporting seat 31. As the upper hot pressing plate 5 descends, the upper hot pressing plate 5 will abut against the inclined section 322 of the side plate 32. Due to the outward expansion structure of the inclined section 322, the pressure applied by the upper hot pressing plate 5 to the inclined section 322 will decompose into a horizontal component force, so that under the action of this component force, the side plate 32 slides in a direction away from the supporting seat 31 through the cooperation between its bottom and the horizontal slide groove 311 of the supporting seat 31. This process can ensure that the upper hot press plate 5 will not contact the metal mesh in advance, driving the support frame 33 to descend. If the metal meshes are not neatly stacked when multiple layers are placed, the upper hot press plate 5 will squeeze the metal meshes and drive the support frame 33 to descend, which will cause the misaligned metal meshes to be stacked more tightly and more difficult to regularize. When the support frame 33 descends, a regularizing mechanism can be set to automatically regularize the metal meshes, so that the multiple layers of metal meshes are automatically regularized, and there will be no misalignment or offset between the multiple layers of metal meshes. During the hot pressing process, the side plate 32 will not contact the side wall of the metal mesh after it is away from the support seat 31.

[0035] After the hot pressing is completed, the upper hot pressing plate 5 rises and resets. At this time, the side plate 32 is not under the pressure of the upper hot pressing plate 5, and the supporting frame 33 rises to drive the side plate 32 to reset. The side plate 32 is driven to slide toward the supporting seat 31 through the connecting rod 4. Finally, the supporting frame 33 rises to support the metal mesh to achieve demolding. After the side plates 32 are close, they are re-enclosed to form a space to accommodate the metal mesh.

[0036] The cooperation between the upper hot press plate 5 and the inclined section 322 of the side panel 32 during the descent process converts the vertical movement of the upper hot press plate 5 into the lateral sliding of the side panel 32. There is no need to set up an additional power device specifically for driving the side panel 32 to slide, which simplifies the structure and control system of the device and reduces the complexity and cost of the equipment. After the hot pressing is completed, after the upper hot press plate 5 rises to the height of the inclined section 322, the limit on the side panel 32 is gradually cancelled, and the support frame 33 can rise, reducing the difficulty of demolding. The contact between the upper hot press plate 5 and the inclined section 322 of the side panel 32 when descending can play a role in positioning and guiding the side panel 32 to a certain extent, ensuring that the side panel 32 will not contact the metal mesh during the hot pressing process, preventing the edge of the metal mesh from being squeezed and affecting the qualified rate of the finished product.

[0037] Since the linkage between the upper hot pressing plate 5 and the side plate 32 is based on a simple mechanical structure, the use of complex electrical components and control programs is reduced, and the probability of failure is reduced. At the same time, this structure is easy for operators to understand and master, and is more convenient and quick in daily maintenance and operation.

[0038] like Figure 2 As shown, the outer wall of the supporting frame 33 abuts against the side wall of the supporting seat 31, and the inner wall faces the center of the supporting seat 31. The supporting frame 33 is located between the side plate 32 and the side wall of the supporting seat 31, and the inner wall of the side plate 32 abuts against the outer wall of the supporting frame 33 after sliding toward the supporting seat 31. The supporting frame 33 is lifted and lowered on the supporting seat 31 by the guide structure, and its top surface can be at the same level as the top surface of the supporting seat 31 or higher than the top surface of the supporting seat 31 during the lifting process.

[0039] When the side plate 32 slides toward the support seat 31, the inner wall of the side plate 32 pushes the outer wall of the support frame 33, and the support frame 33 descends along the guide structure until the top surface of the support frame 33 is flush with the top surface of the support seat 31, forming a plane that supports the metal mesh together. At this time, multiple layers of metal mesh are stacked on the top surface of the support seat 31 and the top surface of the support frame 33, and the side plate 32, the support frame 33 and the support seat 31 form a receiving space. The support frame 33 and the support seat 31 can be designed to be different materials, which reduces the frequency of replacing the entire mold 3 due to different stresses between the support seat 31 and the support frame 33 during hot pressing. In this structure, only the support frame 33 or the support seat 31 can be replaced.

[0040] After hot pressing is completed, the supporting frame 33 rises under the action of the driving mechanism, and the top surface is higher than the top surface of the supporting seat 31, supporting the metal mesh from the supporting seat 31 to achieve demoulding, and the side plate 32 slides toward the supporting seat 31 and does not contact the metal mesh during the approach stage.

[0041] When the top surface of the support frame 33 is flush with the top surface of the support seat 31, the metal mesh can be placed stably; when demolding, the support frame 33 rises to support the metal mesh, and it can be separated from the support seat 31 without additional tools, avoiding deformation of the metal mesh caused by direct pulling. The abutment structure between the support frame 33 and the side wall of the support seat 31 enhances the rigidity of the mold 3 during the hot pressing process. The coordinated support of multiple support frames 33 can evenly disperse the axial pressure during hot pressing, which is suitable for stacking metal meshes with a large number of layers, avoiding interlayer misalignment or uneven growth of sintering necks due to insufficient local support force, and pressure detection parts can be installed on both the support frame 33 and the support seat 31. Compared with installing pressure detection parts at multiple points on the bottom end surface of the entire mold 3, the detection result is more accurate.

[0042] like Figure 3 As shown, the side plate 32 is provided with a mounting groove 323, and a side thereof close to the supporting seat 31 is provided with an opening 324, and the opening 324 faces the inner side of the side plate 32 (i.e., toward the center direction of the supporting seat 31). The center plate 6 is connected to the mounting groove 323 through a first elastic member, specifically: the center plate 6 is hinged to the bottom of the mounting groove 323 through a rotating shaft and a first elastic member (such as a torsion spring), so that the center plate 6 can swing around the rotating shaft.

[0043] When the side plate 32 slides away from the support frame 33 (i.e., the metal mesh placement stage), the distance between the side plate 32 and the support frame 33 increases, and the center plate 6 swings around the hinge point toward the support frame 33 under the elastic force of the first elastic member, and extends out of the mounting slot 323 of the side plate 32 through the opening 324, contacts the metal mesh, and forms a push structure against the edge of the metal mesh, so that the metal mesh is centered. When the side plate 32 continues to move away, the distance away is too large, and the center plate 6 follows the side plate 32 and leaves the metal mesh.

[0044] Through the mechanical linkage of the sliding of the side plate 32 and the swinging of the centering plate 6, when the metal mesh is installed, the centering plate 6 is extended by the first elastic member, pushing the edge of the metal mesh to center it, reducing the manual centering operation and improving the positioning accuracy of the metal mesh on the supporting frame 33. The elastic deformation ability of the first elastic member allows the centering plate 6 to apply adaptive pressure to the edges of metal meshes of different sizes. Even if the metal mesh stack undergoes a slight size change after hot pressing, it can still be reliably positioned through the swinging of the centering plate 6, reducing the problem of post-demolding offset caused by size deviation.

[0045] like Figure 3 As shown, a protrusion 61 is provided on the side of the supporting frame 33 away from the supporting seat 31, and the center plate 6 has a first bending section 62, a second vertical section 63 and a second bending section 64 arranged from top to bottom, and the ends of the first bending section 62 and the second bending section 64 away from the second vertical section 63 are both expanded outward.

[0046] During the demoulding process, the support frame 33 drives the metal mesh to rise. When the support frame 33 rises to a certain height, the protrusion 61 directly contacts the second vertical section 63. Since the first bending section 62 expands outward, the support frame 33 directly drives the metal mesh to demould. During the loading process, the support frame 33 drives the protrusion 61 and the metal mesh to descend. The protrusion 61 first contacts the bending section. The force exerted by the protrusion 61 causes the first bending section 62 to drive the entire center plate 6 to swing around the hinge point, so that the second vertical section 63 is away from the support seat 31, and the first bending section 62 and the second bending section 64 are aligned with each other. The second vertical section 63 has a chamfer at the connection point. As the protrusion 61 descends, the protrusion 61 and the second vertical section 63 contact each other. At this time, the second vertical section 63 cannot contact the metal mesh, but the space enclosed by the second vertical section 63 is larger than the cross-sectional area of ​​the metal mesh. The metal mesh can be supported by the supporting frame 33. As the supporting frame 33 descends, a clearance is formed between the protrusion 61 and the second bending section 64. Driven by the first elastic member, the second vertical section 63 swings toward the direction close to the supporting seat 31. The second vertical section 63 can contact the metal mesh to center the metal mesh.

[0047] The cooperation between the protrusion 61 on the support frame 33 and the first bending section 62 of the centering plate 6, and the cooperation between the upper hot pressing plate 5 and the first bending section 62, realizes the swing adjustment of the centering plate 6 in different working stages. It avoids the obstruction of the metal mesh in the demoulding ascending stage, realizes the centering of the metal mesh in the descending stage, does not affect the hot pressing operation in the hot pressing stage, and reduces manual intervention.

[0048] After the support frame 33 drives the metal mesh to descend and the protrusion 61 is separated from the second vertical section 63, the first elastic member drives the second vertical section 63 to approach and abut the metal mesh, which can effectively push the metal mesh to the center position, ensuring that the metal mesh is centered on the support frame 33, which is beneficial to improving the quality of hot pressing. During the demolding and ascending process, the protrusion 61 causes the centering plate 6 to swing away from the metal mesh, avoiding interference between the centering plate 6 and the metal mesh or the hot pressing operation, and facilitating automatic demolding. The interaction between the protrusion 61, the first bending section 62 of the centering plate 6, the second bending section 64, the first elastic member and the upper hot pressing plate 5 is used to achieve the swing adjustment of the centering plate 6, without the need for complex electrical control or additional power devices, and the structure is simple, reducing costs. The function of automatically adjusting the position of the centering plate 6 and the centering metal mesh reduces the time of manual adjustment, making the entire hot pressing process more efficient.

[0049] like Figure 4As shown, a transverse groove 311 is provided on the support seat 31 to limit the sliding direction of the side plate 32. A horizontal section 325 is provided at the bottom of the side plate 32. The cross-sectional shape of the horizontal section 325 matches the transverse groove 311 and is embedded in the transverse groove 311 to form a sliding connection structure. The side plate 32 does not separate from the support seat 31 during the sliding process, and the side plate 32 is allowed to perform reciprocating linear motion along the transverse groove 311. During demoulding, when the support frame 33 drives the side plate 32 to slide through the connecting rod 4, the horizontal section 325 of the side plate 32 slides in the transverse groove 311, and the side wall of the transverse groove 311 forms a limit for the horizontal section 325.

[0050] The cooperation between the transverse slide groove 311 and the horizontal section 325 forms a mechanical guide structure, which limits the movement trajectory of the side plate 32 to a straight line, avoids tilting or shaking during the sliding process, and ensures the position of the metal mesh laminate during hot pressing. The design of the horizontal section 325 embedded in the transverse slide groove 311 increases the contact area between the side plate 32 and the support seat 31, improves the overall rigidity of the mold 3 during the hot pressing process, and reduces the deformation of the mold 3 caused by pressure.

[0051] like Figure 4 As shown, the support seat 31 is provided with a vertical guide hole 312, which is connected to the horizontal slide groove 311. A guide column 326 is provided at the bottom end of the support frame 33, and the guide column 326 penetrates the vertical guide hole 312 and slides with it. The connecting rod 4 is located in the horizontal slide groove 311, one end of which is hinged to the bottom end of the guide column 326, and the other end is hinged to the horizontal section 325 of the side plate 32.

[0052] When the support frame 33 rises, the guide column 326 slides upward in the vertical guide hole 312, guiding the rise of the support frame 33 and ensuring that the support frame 33 rises vertically. At the same time, the rise of the guide column 326 causes the side plate 32 to slide horizontally in the horizontal slide groove 311 toward the support seat 31 through the connecting rod 4. When the side plate 32 slides away from the support seat 31, the guide column 326 slides downward in the vertical guide hole 312 when the support frame 33 is driven to descend through the connecting rod 4.

[0053] The cooperation between the vertical guide hole 312 and the guide column 326 provides guidance for the lifting movement of the support frame 33, so that the support frame 33 can rise and fall vertically, ensure the position of the support frame 33 when the metal mesh is demoulded and placed, and avoid the deviation of the support frame 33 during the movement. The connection method of the guide column 326, the connecting rod 4 and the side plate 32 allows the support frame 33 and the side plate 32 to move synchronously, cooperate with each other, and do not need to add additional drives.

[0054] The connection design between the vertical guide hole 312 and the horizontal slide groove 311, and the cooperation between the guide column 326 and the connecting rod 4 therein, enhance the stability of the entire mold 3 structure. During the hot pressing and demoulding process, this structure can better withstand pressure and external force, reduce shaking and deformation between components, and ensure the normal operation of the device.

[0055] like Figure 4 As shown, a second elastic member 7 is provided between the inner wall of the vertical guide hole 312 and the support frame 33, for example, a spring. One end of the spring is fixed to the bottom of the inner wall of the vertical guide hole 312, and the other end is fixed to the bottom end surface of the support frame 33. When the device is in the hot pressing preparation stage, the upper hot pressing plate 5 descends, and the side plate 32 is moved away from the support seat 31 by the action of the inclined section 322 of the side plate 32. The support frame 33 overcomes the elastic force of the second elastic member 7 under the action of the side plate 32 and the connecting rod 4 and descends until the top surface of the support frame 33 is flush with the top surface of the support seat 31, and the multi-layer metal mesh is placed on the plane formed by the support seat 31 and the support frame 33. At this time, there is a support surface on the support seat 31, and the support frame 33 can contact the support surface. The support surface and the support frame 33 jointly support the pressure of the metal mesh during hot pressing. The upper hot pressing plate 5 continues to descend and cooperates with the lower hot pressing plate 2 to perform hot pressing molding on the metal mesh.

[0056] After the hot pressing is completed, the upper hot pressing plate 5 rises, the supporting frame 33 rises under the action of the second elastic member 7, and the side plate 32 slides toward the direction close to the supporting seat 31 under the action of the connecting rod 4. The second elastic member 7 elastically recovers and elastically pushes the supporting frame 33 to rise. During the rising process of the supporting frame 33, the guide column 326 slides in the vertical guide hole 312 for guidance. At the same time, the rising of the supporting frame 33 drives the connecting rod 4 to move, and the connecting rod 4 further drives the side plate 32 to slide in the horizontal slide groove 311. Finally, the supporting frame 33 rises to a certain height to support the metal mesh, so that the metal mesh can be demoulded.

[0057] The elastic pushing action of the second elastic member 7 provides additional power for the rise of the support frame 33, assisting the support frame 33 to lift the metal mesh from the mold 3 more easily, and at the same time can improve the speed and efficiency of demolding to a certain extent, and reduce the demolding time. The cooperation of the second elastic member 7 with the connecting rod 4 and the side plate 32 further optimizes the action linkage between the various components of the device. During demolding, the elastic force of the second elastic member 7 causes the support frame 33 to rise, and the rise of the support frame 33 drives the side plate 32 to slide through the connecting rod 4, making the entire demolding process coherent. Due to the design of the inclined section 322, in conjunction with the rise of the support frame 33, it is also more convenient to unload the metal mesh after demolding.

[0058] A hot extrusion forming method for a metal mesh, the processing steps of the hot pressing forming device are as follows: S1. Install the mold 3 onto the lower hot pressing plate 2: detachably install the supporting seat 31 onto the lower hot pressing plate 2, the inner side wall of the side plate 32 abuts against the supporting frame 33, install the side plate 32 and the supporting seat 31 to form a receiving space for receiving the metal mesh, stack the multi-layer metal mesh on the supporting frame 33, the upper hot pressing plate 5 descends and presses the inclined section 322 of the side plate 32 to drive the side plate 32 to slide away from the supporting seat 31, and the supporting frame 33 drives the metal mesh to descend until the bottom surface of the multi-layer metal mesh is supported by the supporting seat 31 and the supporting frame 33; S2. Place the metal mesh on the support seat 31 and center it: the side plate 32 slides away from the support seat 31, and the center plate 6 swings to the opening 324 extending outward from the side plate 32 under the action of the first elastic member, and abuts against the edge of the metal mesh so that the multi-layer metal mesh is centered; S3 hot pressing: the support frame 33 is moved down until its top surface is flush with the top surface of the support seat 31, the upper hot pressing plate 5 continues to drop and cooperates with the support seat 31 to press the metal mesh; S4. Demolding preparation: After the hot pressing is completed, the upper hot pressing plate 5 rises and resets, the side plate 32 slides closer to the support seat 31 under the action of the second elastic member 7 and the connecting rod 4, and the support frame 33 rises to a top surface higher than the top surface of the support seat 31 under the elastic force of the second elastic member 7; S5. Demolding and unloading: The supporting frame 33 moves upward and lifts the metal mesh to be separated from the supporting seat 31 to unload the metal mesh.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A hot extrusion forming device for a metal mesh, characterized in that: It comprises a frame (1) and a lower hot pressing plate (2) and an upper hot pressing plate (5) arranged on the frame (1); A mold (3), wherein the mold (3) comprises: A supporting seat (31) detachably connected to the lower hot pressing plate (2); There are a plurality of side plates (32), all of which are slidably arranged on the side of the supporting seat (31) in a horizontal direction, and the side plates (32) are configured to slide closer to or farther away from the supporting seat (31), and a plurality of the side plates (32) can enclose with the supporting seat (31) to form a storage space located above the supporting seat (31) for accommodating the metal mesh; A support frame (33) is movably mounted on the side plate (32) and sleeved on the upper periphery of the support seat (31). The support frame (33) can move upward to protrude from the top surface of the support seat (31) and lift the metal mesh to demould the metal mesh, or move downward and drive the metal mesh to descend to unload the metal mesh and transport it to the support seat (31).

2. The hot extrusion forming device of a metal mesh according to claim 1, characterized in that: Also includes: The connecting rod (4) has a plurality of connecting rods, one end of which is hingedly arranged on the supporting frame (33) and the other end of which is hingedly arranged on the side plate (32). The connecting rod (4) is configured to slide along the side plate (32) to a side away from the supporting seat (31) and drive the supporting frame (33) to descend.

3. The hot extrusion forming processing device of a metal mesh according to claim 1, characterized in that: There are a plurality of support frames (33) distributed along the circumference of the support seat (31); the support frames (33) are located between the side plates (32) and the side walls of the support seat (31); the side plates (32) are configured to be close to the support seat (31) and abut against the edge of the metal mesh to center the metal mesh.

4. The hot extrusion forming processing device of a metal mesh according to claim 1, characterized in that: The side plate (32) has a first vertical section (321) and an inclined section (322) located above the first vertical section (321); the inclined section (322) extends outwardly from bottom to top; the upper hot pressing plate (5) can move downward to abut against the inclined section (322) to drive the side plate (32) to slide to a side away from the supporting seat (31).

5. The hot extrusion forming device of a metal mesh according to claim 4, characterized in that: The inner wall of the side plate (32) is provided with a mounting groove (323), the mounting groove (323) having an opening (324), the height of the opening (324) being smaller than the height of the mounting groove (323), a centering plate (6) being swingably arranged in the mounting groove (323), the centering plate (6) and the inner wall of the mounting groove (323) being rotatably connected via a rotating shaft, a first elastic member being sleeved on the rotating shaft, the centering plate (6) being able to extend outward from the opening (324) driven by the elastic force of the first elastic member and abutting against the edge of the metal to center the metal mesh.

6. The hot extrusion forming device of a metal mesh according to claim 5, characterized in that: The supporting frame (33) has a protrusion (61) on a side away from the supporting seat (31); the centering plate (6) has a first bending section (62), a second vertical section (63) and a second bending section (64) arranged in sequence from top to bottom; the first bending section (62) and the second bending section (64) have one end away from the second vertical section (63) that is expanded outward; the supporting frame (33) is configured to drive the metal mesh to be unloaded onto the supporting seat (31); the protrusion (61) can abut against the first bending section (62) so that the first bending section (62) avoids the metal mesh; the protrusion (61) is configured to be able to move downward and detach from the second vertical section (63) under the drive of the supporting frame (33), so that the second vertical section (63) is driven by the first elastic member to approach and abut against the metal mesh to center the metal mesh.

7. The hot extrusion forming device of a metal mesh according to claim 2, characterized in that: The side of the supporting seat (31) has a transverse sliding groove (311) opening outward, and the side plate (32) has a horizontal section (325), and the horizontal section (325) is slidably arranged in the transverse sliding groove (311).

8. The hot extrusion forming device of a metal mesh according to claim 7, characterized in that: The support seat (31) has an upper part and a lower part, the support frame (33) and the upper part are pressed together, the lower part has a support end surface, the support end surface has a vertical guide hole (312), the vertical guide hole (312) is connected to the horizontal slide groove (311) and is located above the horizontal slide groove (311), the bottom surface of the support frame (33) has a guide column (326), the lower end of the connecting rod (4) is hinged to the horizontal section (325), and the lower end is hingedly arranged on the guide column (326).

9. The hot extrusion forming device of a metal mesh according to claim 8, characterized in that: Also includes: A second elastic member (7) is sleeved on the outer circumference of the guide column (326), and one end of the second elastic member is arranged on the inner wall of the vertical guide hole (312), and the other end of the second elastic member (7) is arranged on the support frame (33). The second elastic member (7) is used to elastically push the support frame (33) to move the support frame (33) upward for demoulding, and to drive the side plate (32) to approach the support frame (33).

10. A hot extrusion forming method for a metal mesh, characterized in that: The steps of processing the metal mesh using the hot pressing forming processing device according to any one of claims 1 to 9 are as follows: S1. Installing the mold (3) onto the lower hot pressing plate (2): detachably installing the supporting seat (31) onto the lower hot pressing plate (2), abutting the inner side wall of the side plate (32) against the supporting frame (33), installing the side plate (32) and the supporting seat (31) to form a receiving space for receiving the metal mesh, stacking the multiple layers of metal mesh onto the supporting frame (33), lowering the upper hot pressing plate (5) and pressing the inclined section (322) of the side plate (32) to drive the side plate (32) to slide away from the supporting seat (31), and the supporting frame (33) drives the metal mesh to descend until the bottom surface of the multiple layers of metal mesh is supported by the supporting seat (31) and the supporting frame (33); S2. Placing the metal mesh on the support seat (31) and centered: the side plate (32) slides away from the support seat (31), and the center plate (6) swings to the opening (324) extending outward from the side plate (32) under the action of the first elastic member, and abuts against the edge of the metal mesh so that the multi-layer metal mesh is centered; S3 hot pressing: the support frame (33) is moved down until its top surface is flush with the top surface of the support seat (31), the upper hot pressing plate (5) continues to descend and cooperates with the support seat (31) to hot press the metal mesh; S4. Demolding preparation: After the hot pressing is completed, the upper hot pressing plate (5) rises and resets, and the side plate (32) slides toward the side close to the supporting seat (31) under the action of the second elastic member (7) and the connecting rod (4), and the supporting frame (33) rises to a top surface higher than the top surface of the supporting seat (31) under the elastic force of the second elastic member (7); S5. Demolding and unloading: The support frame (33) moves upward and lifts the metal mesh to separate from the support seat (31) to unload the metal mesh.

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