A hot extrusion forming processing device and method for metal mesh

Abstract

The present invention relates to the technical field of hot extrusion devices. The present invention provides a hot extrusion forming device and method for metal mesh. The device includes a frame, a lower hot pressing plate is arranged on the frame; a supporting seat is detachably connected to the lower hot pressing plate; there are several side panels, all of which are slidably arranged on the supporting seat; a supporting frame is lifted and lowered on the supporting seat, and after the side panels are configured to be close to the supporting seat, the supporting frame can rise to support the metal mesh so that the metal mesh can be demoulded. The present invention also provides a hot extrusion forming method for metal mesh. The above technical solution 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 demoulding. The sliding guide structure of the side panel and the lifting drive mechanism of the supporting frame both adopt mechanical transmission methods, which can be automatically controlled by a control system, reducing manual intervention and improving the continuity of the hot pressing and demoulding processes.

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 using the vacuum hot pressing sintering process, multiple layers of metal mesh must be stacked neatly. The pore size gradient distribution and structural combination of the multiple layers of metal mesh determine the filtration accuracy, compressive strength and porosity of the sintered body. If the metal mesh is misaligned or skewed when stacked, the following problems will arise: the intersections of the warp and weft of each layer of metal mesh cannot form an orderly combination, and local pore blockage or displacement of the connecting channels will occur after sintering, affecting fluid filtration. The misalignment between layers causes stress concentration, which is prone to delamination failure or fatigue fracture 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 metal mesh sintering process, the growth of the metal wire sintering necks between the multiple layers of the stacked metal mesh generates a lateral expansion force. When the mesh holes are arranged orthogonally, the intersections of the warp and weft wires sinter 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 energy to separate the metal mesh from the mold. Summary of the Invention

[0003] To overcome the above-mentioned defects, an embodiment of the present invention provides 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.

[0004] According to one aspect, at least one embodiment of the present invention provides

[0005] A hot extrusion forming processing device for a metal mesh comprises a frame and a lower hot pressing plate and an upper hot pressing plate arranged on the frame;

[0006] A mold, comprising:

[0007] A supporting seat, detachably connected to the lower hot pressing plate;

[0008] There are a plurality of side panels, each of which is slidably arranged on the side of the support seat in a horizontal direction, and the side panels are configured to slide closer to or away from the support seat, and the plurality of side panels can enclose together with the support seat to form a receiving space located above the support seat for receiving the metal mesh;

[0009] The supporting frame is lifted and lowered on the side plate and is 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.

[0010] For example, at least one embodiment of the present invention provides a hot extrusion forming device for a metal mesh, further comprising:

[0011] 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 away from the supporting seat and drive the supporting frame to descend.

[0012] For example, in a hot extrusion forming device for a metal mesh provided by at least one embodiment of the present invention,

[0013] The side plate has a first vertical section and an inclined section located above the first vertical section. The inclined section extends outward from bottom to top. The upper hot pressing plate can move downward and abut against the inclined section to drive the side plate to slide toward the side away from the supporting seat.

[0014] 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 several support frames, which are distributed along the circumference of the support seat. The support frames are located between the side plates and the side walls of the support seat. The side plates are configured to be able to approach the support seat and abut against the edge of the metal mesh to center the metal mesh.

[0015] For example, in a hot extrusion forming processing device for a metal mesh provided in 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 outward from the opening under the elastic force of the first elastic member and abut against the edge of the metal to center the metal mesh.

[0016] 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. When the support frame is configured to drive the metal mesh to be unloaded onto the support seat, 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.

[0017] 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.

[0018] For example, in a hot extrusion forming processing device for a metal mesh provided in 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 bottom surface of the supporting frame has a guide column, the lower end of the connecting rod is hinged to the horizontal section, and the lower end is hinged to the guide column.

[0019] For example, at least one embodiment of the present invention provides a hot extrusion forming device for a metal mesh, further comprising:

[0020] The 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 support frame. The second elastic member is used to elastically push the support frame to move the support frame upward for demoulding and drive the side panel close to the support frame.

[0021] A hot extrusion forming method for a metal mesh, wherein the steps of forming the metal mesh by a hot extrusion forming device are as follows:

[0022] S1. Install the mold on the lower hot press plate: detachably install the support seat on the lower hot press plate, abut the inner side wall of the side plate against the support frame, install the side plate and the support seat to form a storage space for accommodating the metal mesh, stack multiple layers of metal mesh on the support frame, lower the upper hot press plate and press the inclined section of the side plate to drive the side plate to slide away from the support seat, and the support frame drives the metal mesh to descend until the bottom surface of the multiple layers of metal mesh is supported by the support seat and the support frame;

[0023] S2. Place the metal mesh on the support seat and center it: the side panels slide away from the support seat, and the centering panel, under the action of the first elastic member, swings to the opening extending outward from the side panels and abuts against the edge of the metal mesh to center the multiple layers of metal mesh;

[0024] 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;

[0025] S4. Demolding preparation: After the hot pressing is completed, the upper hot pressing plate rises and resets, and the side plate slides toward the side close to the support seat under the action of the second elastic member and the connecting rod. The support frame rises to a top surface higher than the top surface of the support seat under the elastic force of the second elastic member;

[0026] S5. Demolding and unloading: The support frame moves upward and lifts the metal mesh to detach from the support seat to unload the metal mesh.

[0027] The beneficial effects of the embodiments of the present invention are:

[0028] In the present invention, 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 coordination of each component. It 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 presence 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 for taking the metal mesh. The side panels are away from the support seat, eliminating lateral pressure on the metal mesh and avoiding demoulding resistance caused by lateral expansion of the metal mesh. The support frame cooperates with the side panels, and the support frame lifts the metal mesh from the support seat through an upward movement, thereby avoiding deformation or damage caused by directly pulling the metal mesh.

[0029] The sliding guide structure of the side panel and the lifting drive mechanism of the support frame both adopt mechanical transmission, which can be automatically controlled by a control system (not shown), reducing manual intervention and improving the continuity of the hot pressing and demoulding processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.

[0031] Figure 1 This is a schematic structural diagram of a mold of a hot extrusion molding device for a metal mesh according to one embodiment of the present invention;

[0032] Figure 2 for Figure 1 A schematic diagram of a partial structure of a mold in an embodiment of the present invention;

[0033] Figure 3 for Figure 1 A schematic cross-sectional view of a mold in an embodiment of the present invention;

[0034] Figure 4 for Figure 1 A schematic structural diagram of a guide column in an embodiment of the present invention;

[0035] Figure 5 for Figure 1 Schematic diagram of the upper hot pressing plate structure in the embodiment.

[0036] In the figure: 1. Frame, 2. Lower hot pressing plate, 3. Mold, 31. Support seat, 32. Side plate, 33. Support 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

[0037] The present invention will be further described in detail below with reference to 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.

[0038] To simplify the drawings, only the parts relevant to the disclosure are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0039] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0040] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0042] 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.

[0043] like Figures 1 to 5 As 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), which is convenient for replacing the supporting seat 31 according to the processing requirements of metal meshes of different specifications.

[0044] There are multiple side panels 32, each slidably mounted on the support base 31 via a sliding guide structure (e.g., a transverse groove 311 on the support base 31 that cooperates with a horizontal slider at the bottom of the side panels 32) to allow for movement toward or away from the center area (or sidewall) of the support base 31. In the initial state, the support frame 33 is raised, and the side panels 32 are positioned close to the support base 31. The side panels 32 and the support base 31 form a receiving space, within which multiple layers of metal mesh are placed. The receiving space and the metal mesh are of identical size, so that the metal mesh is perfectly centered within the receiving space. The side panels 32 are positioned away from the support base 31 to prevent the metal mesh from expanding laterally during hot pressing, resulting in an interference fit with the side panels 32 and difficulty in demolding.

[0045] The support frame 33 is raised and lowered on the support base 31 by a lifting drive mechanism (e.g., a screw-nut mechanism, pneumatic cylinder, or hydraulic cylinder within the support base 31). After the support frame 33 is lowered, the top surface of the support frame 33 and the top surface of the support base 31 are aligned, thereby jointly supporting the metal mesh. After hot pressing is completed, the side panels 32 slide toward the support base 31 while the support frame 33 rises. Once the metal mesh is lifted out of the receiving space, the side panels 32 fully approach the support base 31, completing demolding.

[0046] 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 an accommodating space, so that the supporting frame 33 is in an upward state; the multiple layers of metal mesh are stacked neatly 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 hot press 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.

[0047] This device effectively solves the problem of difficulty in demoulding the metal mesh after hot pressing in the prior art through the structural design and coordination of each component. It also solves the problem of squeezing the side walls and side panels 32 of the metal mesh during hot pressing, preventing the metal mesh from becoming defective due to the presence of the side panels 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 panels 32 are away from the support seat 31, eliminating lateral pressure on the metal mesh and avoiding demoulding resistance caused by lateral expansion of the metal mesh. The support frame 33 cooperates with the movement of the side panels 32, and the support frame 33 lifts the metal mesh from the support seat 31 through an upward movement, avoiding deformation or damage caused by directly pulling the metal mesh.

[0048] The sliding guide structure of the side plate 32 and the lifting drive mechanism of the support frame 33 both adopt mechanical transmission, which can be automatically controlled by a control system (not shown), reducing manual intervention and improving the continuity of the hot pressing and demoulding processes.

[0049] like Figure 1 As shown, the ends of the connecting rod 4 are connected to the bottom of the support frame 33 and the side panels 32 via hinged structures. The support base 31 is provided with a transverse slot 311, and the bottom of the side panels 32 are mounted within the transverse slot 311 via sliding components, forming a transverse sliding guide structure. A guide component is provided at the bottom of the support frame 33. This guide component passes through the vertical guide hole 312 of the support base 31 and is connected to the connecting rod 4. The connecting rod 4 can be one or more.

[0050] When the support frame 33 is driven upward by the drive mechanism, the guide components simultaneously rise along the vertical guide holes 312. The connecting rod 4 causes the side panels 32 to slide along the transverse chute 311 toward the center of the support seat 31 under the guidance of the sliding components. Only after the support frame 33 has driven the metal mesh out of the storage space will the side panels 32 slide into place. When the side panels 32 slide toward the support seat 31, they do not squeeze the edges of the metal mesh. The top surface of the support frame 33 is higher than the top surface of the support seat 31, and after the metal mesh is out of the storage space, the metal mesh is demolded. Before hot pressing, the support frame 33 is lowered, and the guide components lower along the vertical guide holes 312. The connecting rod 4 drives the side panels 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 to accommodate the metal mesh. The cross-sectional area of the storage space is equal to or greater than the area of the metal mesh, and the side panels 32 do not contact the metal mesh during the hot pressing process.

[0051] The connecting rod 4 converts the horizontal sliding movement of the side plate 32 into the vertical lifting movement of the support frame 33, and can realize demoulding without an additional power device. The movement coordination between components is achieved through structural design, which improves the degree of automation of the device.

[0052] Before the support frame 33 rises, the side plate 32 is away from the support 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 support frame 33 is guided by the guide part and the vertical guide hole 312. The two guide 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.

[0053] like Figure 1 and Figure 5 As shown, the upper hot pressing plate 5 is lifted and lowered on the frame 1 by a lifting drive mechanism (such as a screw nut mechanism, a hydraulic cylinder, etc.).

[0054] The side panel 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 surface 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 panel 32. Due to the outward expansion structure of the inclined section 322, the pressure exerted by the upper hot pressing plate 5 on the inclined section 322 will decompose into a horizontal component force, so that under the action of this component force, the side panel 32 slides in the 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 ensures that the upper hot press plate 5 does not prematurely contact the metal mesh, causing the support frame 33 to descend. If multiple layers of metal mesh are not neatly stacked, the upper hot press plate 5 will descend by squeezing the metal mesh, driving the support frame 33 downward. This will cause the misaligned metal meshes to stack more tightly, making it more difficult to straighten the metal mesh. A straightening mechanism can be provided when the support frame 33 descends to automatically straighten the metal mesh, ensuring that the multiple layers of metal mesh are automatically straightened and that there is no misalignment or offset between the multiple layers of metal mesh. During the hot pressing process, the side panels 32 will not contact the side walls of the metal mesh after they are away from the support seat 31.

[0055] 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 demoulding. After the side plates 32 are close, they are re-enclosed to form a space to accommodate the metal mesh.

[0056] 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 sliding of the side panel 32, 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, the upper hot press plate 5 rises to the height of the inclined section 322, and the limit on the side panel 32 is gradually cancelled, and the support frame 33 can rise, which reduces the difficulty of demoulding. The contact between the upper hot press plate 5 and the inclined section 322 of the side panel 32 when descending can, to a certain extent, play a positioning and guiding role for the side panel 32, 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.

[0057] Since the linkage between the upper hot 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, making it more convenient and quick during daily maintenance and operation.

[0058] like Figure 2 As shown, the outer sidewalls of the support frame 33 abut against the sidewalls of the support seat 31, while the inner sidewalls face the center of the support seat 31. The support frame 33 is located between the side panels 32 and the sidewalls of the support seat 31. The inner sidewalls of the side panels 32 abut against the outer sidewalls of the support frame 33 after sliding toward the support seat 31. The support frame 33 is raised and lowered on the support seat 31 by a guide structure, and its top surface can be aligned with or higher than the top surface of the support seat 31 during the raising and lowering process.

[0059] When the side panels 32 slide toward the support seat 31, the inner sidewalls of the side panels 32 push against the outer sidewalls of the support frame 33, causing the support frame 33 to descend 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. At this point, multiple layers of metal mesh are stacked on the top surfaces of the support seat 31 and the top surfaces of the support frame 33, forming a storage space enclosed by the side panels 32, support frame 33, and support seat 31. The support frame 33 and support seat 31 can be designed with different materials to reduce the frequency of replacement of the entire mold 3 due to different stresses between the support seat 31 and the support frame 33 during hot pressing. This structure allows only the support frame 33 or the support seat 31 to be replaced.

[0060] 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 demolding, and the side plate 32 slides toward the supporting seat 31 and does not contact the metal mesh during the approach stage.

[0061] 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 effect 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 sintering neck growth due to insufficient local support force. 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 results are more accurate.

[0062] like Figure 3 As shown, the side panels 32 define mounting slots 323, with openings 324 located on the side closest to the support base 31. Openings 324 face inward of the side panels 32 (i.e., toward the center of the support base 31). The center panel 6 is connected to the mounting slots 323 via a first elastic member. Specifically, the center panel 6 is hinged to the bottom of the mounting slots 323 via a rotating shaft and a first elastic member (e.g., a torsion spring), allowing the center panel 6 to swing about the rotating shaft.

[0063] When the side panels 32 slide away from the support frame 33 (i.e., during the metal mesh placement phase), the distance between the side panels 32 and the support frame 33 increases. Under the elastic force of the first elastic member, the centering plate 6 swings about the hinge point toward the support frame 33. It extends through the opening 324 and out of the mounting slot 323 of the side panels 32, contacting the metal mesh and forming a push-pushing structure against the edge of the metal mesh, centering the metal mesh. As the side panels 32 continue to move away, the distance between them becomes too great, and the centering plate 6 follows the side panels 32 and separates from the metal mesh.

[0064] Through the mechanical linkage of the sliding side panels 32 and the swinging centering plate 6, when the metal mesh is installed, the centering plate 6 is extended by the first elastic member, pushing against the edge of the metal mesh to center it, reducing manual centering operations and improving the positioning accuracy of the metal mesh on the support frame 33. The elastic deformation capability 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 laminate undergoes slight dimensional changes after hot pressing, the swinging of the centering plate 6 can still ensure reliable positioning, reducing the problem of post-demolding offset caused by dimensional deviation.

[0065] 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 in sequence 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.

[0066] 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 the support seat 31. The connection point of the second vertical section 63 is chamfered. As the protrusion 61 descends, the protrusion 61 and the second vertical section 63 come into contact. At this time, the second vertical section 63 cannot come into contact with the metal mesh, but the space enclosed by the second vertical section 63 is larger than the cross-sectional area of the metal mesh, and the metal mesh can be supported by the support frame 33. As the support 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, and the second vertical section 63 can come into contact with the metal mesh, so that the metal mesh is centered.

[0067] The cooperation between the protrusion 61 on the support frame 33 and the first bent section 62 of the centering plate 6, as well as the cooperation between the upper hot pressing plate 5 and the first bent section 62, enables the centering plate 6 to swing and adjust in different working stages. This prevents obstruction of the metal mesh during the demoulding ascending stage, centers the metal mesh during the descending stage, and does not affect the hot pressing operation during the hot pressing stage, reducing manual intervention.

[0068] After the support frame 33 drives the metal mesh to descend and the protrusion 61 disengages 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 demoulding and rising 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 demoulding. 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, which reduces costs. The function of automatically adjusting the position of the centering plate 6 and the centering metal mesh reduces the time for manual adjustment, making the entire hot pressing process more efficient.

[0069] like Figure 4 As shown, a transverse groove 311 is provided on the support seat 31 to limit the sliding direction of the side panel 32. A horizontal section 325 is provided at the bottom of the side panel 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 panel 32 does not separate from the support seat 31 during the sliding process, while allowing the side panel 32 to perform reciprocating linear motion along the transverse groove 311. During demolding, when the support frame 33 drives the side panel 32 to slide via the connecting rod 4, the horizontal section 325 of the side panel 32 slides in the transverse groove 311, and the side wall of the transverse groove 311 forms a limit for the horizontal section 325.

[0070] The transverse chute 311 and the horizontal section 325 form a mechanical guide structure that confines the motion of the side plate 32 to a straight line, preventing tilting or shaking during sliding and ensuring the correct position of the metal mesh laminate during hot pressing. The design of the horizontal section 325 embedded in the transverse chute 311 increases the contact area between the side plate 32 and the support seat 31, improving the overall rigidity of the mold 3 during hot pressing and reducing deformation of the mold 3 due to pressure.

[0071] like Figure 4As shown, the support base 31 is provided with a vertical guide hole 312, which communicates with the transverse slot 311. A guide post 326 is provided at the bottom end of the support frame 33, extending through and slidingly engaging the vertical guide hole 312. A connecting rod 4 is positioned within the transverse slot 311, with one end hinged to the bottom end of the guide post 326 and the other end hinged to the horizontal section 325 of the side panel 32.

[0072] As the support frame 33 rises, the guide posts 326 slide upward within the vertical guide holes 312, guiding the support frame 33 and ensuring its vertical ascent. Simultaneously, the rising guide posts 326 cause the side panels 32 to slide horizontally within the transverse slots 311, toward the support seat 31, via the connecting rod 4. As the side panels 32 slide away from the support seat 31, the guide posts 326 slide downward within the vertical guide holes 312, driving the support frame 33 downward via the connecting rod 4.

[0073] The cooperation between the vertical guide holes 312 and the guide posts 326 provides guidance for the lifting and lowering movement of the support frame 33, enabling the support frame 33 to rise and fall vertically. This ensures the support frame 33 is positioned correctly during the demolding and placement of the metal mesh, preventing the support frame 33 from shifting during movement. The connection between the guide posts 326, the connecting rods 4, and the side panels 32 allows the support frame 33 and the side panels 32 to move synchronously, cooperating with each other without the need for additional drives.

[0074] The interconnected design of vertical guide hole 312 and transverse chute 311, and the fit of guide post 326 and connecting rod 4 therein, enhance the structural stability of the entire mold 3. During the hot pressing and demolding processes, this structure can better withstand pressure and external forces, reduce shaking and deformation between components, and ensure the normal operation of the device.

[0075] like Figure 4 As shown, a second elastic member 7, such as a spring, is disposed between the inner wall of the vertical guide hole 312 and the support frame 33. 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 surface of the support frame 33. During the hot pressing preparation stage, the upper hot press plate 5 descends, and through interaction with the inclined section 322 of the side plate 32, the side plate 32 is moved away from the support seat 31. Under the action of the side plate 32 and the connecting rod 4, the support frame 33 overcomes the elastic force of the second elastic member 7 and descends until the top surface of the support frame 33 is flush with the top surface of the support seat 31. The multi-layer metal mesh is then placed on the plane formed by the support seat 31 and the support frame 33. At this point, the support seat 31 has a support surface, 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 press plate 5 continues to descend, cooperating with the lower hot press plate 2 to hot press the metal mesh.

[0076] After the hot pressing is completed, the upper hot pressing plate 5 rises, and the support frame 33 rises under the action of the second elastic member 7. The side panels 32 slide toward the support seat 31 under the action of the connecting rod 4. The second elastic member 7 elastically recovers, elastically pushing the support frame 33 to rise. During the rising process, the support frame 33 is guided by the guide pillars 326 sliding in the vertical guide holes 312. At the same time, the rising of the support frame 33 drives the connecting rod 4 to move, and the connecting rod 4 further drives the side panels 32 to slide in the horizontal slide grooves 311. Finally, the support frame 33 rises to a certain height to support the metal mesh, allowing the metal mesh to be demolded.

[0077] 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 more easily lift the metal mesh from the mold 3. At the same time, it can also improve the speed and efficiency of demolding to a certain extent and reduce the demolding time. The cooperation between the second elastic member 7, 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. 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, combined with the rise of the support frame 33, it is also more convenient to unload the metal mesh after demolding.

[0078] A hot extrusion forming method for a metal mesh, and the processing steps of the hot pressing forming device are as follows:

[0079] S1. Install the mold 3 onto the lower hot press plate 2: Removably mount the support base 31 onto the lower hot press plate 2, with the inner sidewalls of the side panels 32 abutting against the support frame 33. The side panels 32 and support base 31 are installed to form a space for accommodating the metal mesh. Multiple layers of metal mesh are stacked on the support frame 33. The upper hot press plate 5 descends and presses against the inclined sections 322 of the side panels 32, causing the side panels 32 to slide away from the support base 31. The support frame 33 then lowers the metal mesh until the bottom surface of the multiple layers of metal mesh is supported by the support base 31 and the support frame 33.

[0080] S2. Place the metal mesh onto the support seat 31 and center it: the side plate 32 slides away from the support seat 31, and the center plate 6 swings under the action of the first elastic member to extend outward from the opening 324 of the side plate 32, and abuts against the edge of the metal mesh so that the multi-layer metal mesh is centered;

[0081] 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 plate 5 continues to drop and cooperates with the support seat 31 to press the metal mesh;

[0082] 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;

[0083] 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.

[0084] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. 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), each of which is slidably arranged on the side of the support seat (31) in a horizontal direction, and the side plates (32) are configured to slide closer to or farther away from the support seat (31), and the plurality of side plates (32) can enclose the support seat (31) to form a receiving space located above the support seat (31) to receive the metal mesh; A supporting frame (33) is arranged on the side plate (32) and is sleeved on the upper periphery of the supporting seat (31). The supporting frame (33) can move upward to protrude from the top surface of the supporting 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 supporting seat (31); The inner wall of the side plate (32) has a mounting groove (323), the mounting groove (323) has an opening (324), the height of the opening (324) is smaller than the height of the mounting groove (323), a centering plate (6) is swingably arranged in the mounting groove (323), the centering plate (6) and the inner wall of the mounting groove (323) are rotatably connected via a rotating shaft, a first elastic member is sleeved on the rotating shaft, the centering plate (6) can extend outward from the opening (324) under the elastic force of the first elastic member and abut against the edge of the metal to center the metal mesh, the side plate (32) has a first vertical section (321) and an inclined section (322) located above the first vertical section (321); The supporting frame (33) has a protrusion (61) on the side away from the supporting seat (31), and 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, and the first bending section (62) and the second bending section (64) are both expanded outward at one end away from the second vertical section (63). When 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, and 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.

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 be able to slide along the side plate (32) away from the supporting seat (31) and drive the supporting frame (33) to descend.

3. The hot extrusion forming 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 device for metal mesh according to claim 1, wherein: The inclined section (322) extends outwardly from bottom to top, and the upper hot pressing plate (5) can move downward to abut against the inclined section (322) to drive the side plate (32) to slide toward a side away from the supporting seat (31).

5. 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).

6. The hot extrusion forming device of a metal mesh according to claim 5, characterized in that: The supporting seat (31) has an upper part and a lower part, the supporting frame (33) and the upper part bear pressure together, the lower part has a supporting end surface, the supporting 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 supporting 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 hinged to the guide column (326).

7. The hot extrusion forming device of a metal mesh according to claim 6, characterized in that: Also includes: A second elastic member (7) is sleeved on the outer periphery of the guide column (326), and one end is arranged on the inner wall of the vertical guide hole (312), and the other end 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 drive the side plate (32) close to the support frame (33).

8. A hot extrusion forming method for a metal mesh, characterized in that: The steps of processing the metal mesh using the hot extrusion molding device according to claim 7 are as follows: S1. Install the mold (3) onto the lower hot pressing plate (2): detachably install the support seat (31) onto the lower hot pressing plate (2), the inner side wall of the side plate (32) abuts against the support frame (33), install the side plate (32) and the support seat (31) to form a receiving space for accommodating the metal mesh, stack the multiple layers of metal mesh on the support frame (33), the upper hot pressing plate (5) descends and presses against the inclined section (322) of the side plate (32) to drive the side plate (32) to slide away from the support seat (31), and the support frame (33) drives the metal mesh to descend until the bottom surface of the multiple layers of metal mesh is supported by the support seat (31) and the support frame (33); S2. Placing the metal mesh onto the support seat (31) and centering the metal mesh: 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 of 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 support frame (33) moves upward and lifts the metal mesh to separate from the support seat (31) to unload the metal mesh.

Images