Basalt fiber grid hot press molding device

Abstract

The invention relates to the technical field of hot-press forming, in particular to a basalt fiber grid hot-press forming device which comprises an outer frame body, a lower die and an upper die and further comprises a linkage assembly, a positioning mechanism is arranged in the lower die, the linkage assembly is in transmission connection with the positioning mechanism, and when the upper die and the lower die are driven to be closed, the linkage assembly is in transmission connection with the positioning mechanism. And the linkage assembly synchronously drives the positioning mechanism to limit and position the basalt fiber grid in the lower die. According to the basalt fiber grid hot press forming device, when the upper mold and the lower mold are driven to be closed, the linkage assembly synchronously drives the positioning mechanism to limit and position the basalt fiber grid located in the lower mold, and the situation that the fiber grid is prone to dislocation or deformation in the pressurizing process is avoided; and when the upper mold and the lower mold are driven to be separated, the positioning mechanism can automatically retract into the preset accommodating cavity, so that the problem that the fiber grid is difficult to demold smoothly due to the limitation of the positioning mechanism is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of hot pressing forming, and particularly to a hot pressing forming device for basalt fiber grids. Background Art

[0002] In the field of fiber material processing, basalt fiber is widely used in multiple industries such as building reinforcement, automobile manufacturing, and aerospace due to its excellent properties such as high strength, corrosion resistance, and high temperature resistance. The traditional production of basalt fiber grids mainly relies on manual laying and simple mechanical pressing, followed by heat treatment for curing. In this process, the most common forming device is to use a simple flat hot press, place the fiber cloth or fiber bundle between the upper and lower molds, and achieve the bonding and forming of the fibers by heating and applying pressure.

[0003] The Chinese patent with the authorization announcement number CN106346762B discloses a hot pressing forming device for a film, including a film carrier table and a hot pressing module. The film carrier table includes: a carrier plate and a lower heating plate. The carrier plate has a product profiling part, and a plurality of vacuum adsorption through holes are provided on the surface of the product profiling part. The hot pressing module includes: an upper pressing plate and an upper heating plate. The upper pressing plate has a concave part corresponding to and matching the product profiling part. The film to be formed is vacuum adsorbed on the surface of the product profiling part on the carrier plate, and the upper heating plate and the lower heating plate heat the film, and the hot pressing module presses the film carrier table to form the film. As described in the above application, this traditional hot pressing forming method is mostly for plates (the overall structure problem is not easy to be misaligned and deformed), but there are certain defects in the production of basalt fiber grid products. The traditional hot pressing forming method is to place the raw materials in the mold and achieve the bonding and forming of the fibers by heating and applying pressure. However, for fiber grid products, the product has a hollow structure. Due to the lack of an effective positioning mechanism to position the fiber grid, the fiber grid is prone to misalignment or deformation during the pressurization process, affecting the dimensional accuracy and structural stability of the finished product. If a positioning device is simply added to the mold to fix the fiber grid, after the forming is completed, due to the limitation of the positioning mechanism, the grid is often difficult to be demolded smoothly, increasing the production difficulty and the complexity of subsequent processing. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a hot pressing forming device for basalt fiber grids.

[0005] The present invention adopts the following technical solutions. The hot pressing forming device for basalt fiber grids includes an external frame, a lower mold, and an upper mold, and further includes a linkage component. A positioning mechanism is arranged in the lower mold, and the linkage component is in transmission connection with the positioning mechanism. When the upper mold and the lower mold are driven to close the mold, the linkage component synchronously drives the positioning mechanism to limit and position the basalt fiber grid located in the lower mold.

[0006] As a further description of the above technical solution: The lower die is fixedly arranged inside the external frame, the upper die is movably arranged inside the external frame, and the lower die is directly below the upper die.

[0007] As a further description of the above technical solution: A groove is provided at the center of the upper surface of the lower die, wire inlet and outlet grooves communicating with the groove are formed on the side walls at both ends of the lower die, a plurality of positioning holes are formed in an array on the inner bottom plate of the groove, a receiving cavity is formed inside the lower die, and the positioning mechanism is located in the receiving cavity.

[0008] As a further description of the above technical solution: The positioning mechanism includes a substrate, a limiting protrusion is fixed on the upper surface of the substrate, a plurality of strip-shaped plates are welded at equal intervals on both side walls of the substrate along the length direction, a rotating shaft is rotatably connected in the receiving cavity along the length direction, a driving block is fixed on the rotating shaft, the driving block is semi-cylindrical, and one end of the strip-shaped plate is attached to the horizontal surface of the driving block.

[0009] As a further description of the above technical solution: A plurality of limiting protrusions are provided, and the plurality of limiting protrusions are arranged in an array, corresponding to the plurality of positioning holes one by one. The upper surface of the limiting protrusion is a structure with a central protrusion and a surrounding contraction, so as to facilitate passing through the fiber mesh holes. A first spring is welded on the lower surface of the strip-shaped plate.

[0010] As a further description of the above technical solution: The linkage assembly is composed of a first linkage mechanism and a second linkage mechanism. The first linkage mechanism and the second linkage mechanism are used to synchronously drive the positioning mechanism to realize the limiting and positioning of the basalt fiber mesh located in the lower die.

[0011] As a further description of the above technical solution: The first linkage mechanism includes a strip-shaped driving plate, the strip-shaped driving plate is inserted into the lower die, the bottom end of the strip-shaped driving plate extends into the receiving cavity and is attached to the horizontal surface of the driving block, a slider is welded on one side wall of the strip-shaped driving plate, a second spring is welded on the lower surface of the slider, a limiting plate is welded on the inner wall of the receiving cavity, a sliding groove is formed on the outer wall of the limiting plate, the slider is slidably connected with the sliding groove, and a positioning protrusion for cooperating with the driving block is welded on the other side wall of the strip-shaped driving plate.

[0012] As a further description of the above technical solution: The second linkage mechanism includes a gear disk, a connecting shaft and a rack. The connecting shaft is welded and fixed at both ends of the rotating shaft, the gear disk is welded and fixed on the connecting shaft, the rack is welded and fixed on the lower surface of the upper die, and the rack is meshed with the gear disk. By driving the rack to move up and down, the gear disk is driven to rotate.

[0013] As a further description of the above technical solution: The external frame body is composed of two parallel support frames and a connecting frame bolted to the tops of the two support frames. A support seat is welded below the connecting frame between the two support frames, and the lower mold is bolted to the support seat.

[0014] As a further description of the above technical solution: A rectangular protrusion for cooperating with the groove is provided on the lower surface of the upper mold. Rubber sealing pads are provided at both ends of the rectangular protrusion along the length direction. Fixing blocks are welded at both ends of one side wall of the upper mold along the length direction. A driving mechanism is provided on the external frame body. The driving mechanism includes a driving seat bolted to the external frame body. A hydraulic telescopic rod is bolted to the driving seat, and the movable end of the hydraulic telescopic rod is fixedly connected to the fixing block.

[0015] Beneficial effects: The basalt fiber mesh hot pressing and forming device provided by the present invention, by arranging an accommodation chamber in the lower mold and movably arranging a positioning mechanism in the accommodation chamber, and in cooperation with the setting of the linkage assembly, when in use, when driving the upper mold and the lower mold to close the mold, the linkage assembly synchronously drives the positioning mechanism to limit and position the basalt fiber mesh located in the lower mold, avoiding the situation that the fiber mesh is prone to dislocation or deformation during the pressurization process, affecting the dimensional accuracy and structural stability of the finished product. And when driving the upper mold and the lower mold to separate the mold, the positioning mechanism will automatically retract into the preset accommodation chamber, thus avoiding the problem that it is difficult to smoothly demold the fiber mesh due to the limitation of the positioning mechanism, resulting in an increase in production difficulty and the complexity of subsequent processing. Moreover, the basalt fiber mesh hot pressing and forming device has a high degree of automation, does not require a driving component to be set for the positioning mechanism, reduces costs and the complexity of operation; Further, the linkage assembly includes a first linkage mechanism and a second linkage mechanism. When driving the upper mold and the lower mold to close the mold, when the upper mold moves downward, the upper mold will drive the driving plate and the rack to move downward. The downward movement of the rack will drive the gear disk to rotate, and the rotation of the gear disk drives the rotating shaft to rotate, realizing the driving of the positioning mechanism to work. And at the same time, when the driving plate moves downward, it will push the driving block to rotate, and the rotation of the driving block will also drive the rotating shaft to move, realizing the driving of the positioning mechanism to work. By synchronously driving the positioning mechanism by the first linkage mechanism and the second linkage mechanism, it overcomes the defect that when only the two ends of the gear disk are used to drive the rotating shaft to rotate, the rotating shaft is subjected to large forces and is prone to damage and deformation, improving the stability of the positioning mechanism in use. Secondly, a positioning protrusion is provided on the first linkage mechanism, and when the driving block rotates 90 degrees, at this time, one end of the driving block will abut against the lower surface of the positioning protrusion, thereby limiting the driving plate, and further limiting the downward movement height of the upper mold, avoiding excessive closing of the mold when the upper mold moves downward and causing extrusion damage to the upper mold and the lower mold, and realizing the limit support for the downward movement height of the upper mold. Description of the drawings

[0016] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic structural diagram of a basalt fiber grid hot pressing and forming device provided by an embodiment of the present invention; Figure 2 It is a sectional view of a basalt fiber grid hot pressing and forming device provided by an embodiment of the present invention; Figure 3 It is a schematic structural diagram of a lower mold provided by an embodiment of the present invention; Figure 4 It is a sectional view of a lower mold provided by an embodiment of the present invention; Figure 5 Provided by an embodiment of the present invention Figure 4 The enlarged view of area A in; Figure 6 It is a schematic structural diagram of a positioning mechanism provided by an embodiment of the present invention; Figure 7 It is a schematic structural diagram of an upper mold provided by an embodiment of the present invention; Figure 8 It is a schematic structural diagram of an external frame body provided by an embodiment of the present invention.

[0017] Description of the drawings: 1. External frame body; 11. Support frame; 12. Support seat; 13. Connecting frame; 2. Lower mold; 21. Groove; 22. Positioning hole; 23. Inlet and outlet wire groove; 24. Accommodation chamber; 3. Upper mold; 31. Fixed block; 32. Rectangular protrusion; 33. Rubber sealing pad; 4. Driving mechanism; 41. Driving seat; 42. Hydraulic telescopic rod; 5. Positioning mechanism; 51. Substrate; 52. Limiting protrusion; 53. Strip-shaped plate; 54. First spring; 55. Rotating shaft; 56. Driving block; 57. Limiting plate; 58. Sliding groove; 61. Driving plate; 601. Positioning protrusion; 611. Slider; 612. Second spring; 62. Gear disc; 63. Connecting shaft; 64. Rack. Detailed implementation manners

[0018] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations. It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other.

[0019] Embodiment 1 Please refer to Figures 1-6The embodiment of the present invention provides a technical solution: a basalt fiber grid hot pressing forming device, including an external frame 1, a lower mold 2 and an upper mold 3, and also includes a linkage component. A positioning mechanism 5 is arranged in the lower mold 2, and a accommodating chamber 24 is opened inside the lower mold 2. The positioning mechanism 5 is located in the accommodating chamber 24. The linkage component is connected with the positioning mechanism 5 in a transmission manner. When the upper mold 3 and the lower mold 2 are driven to close the mold, the linkage component synchronously drives the positioning mechanism 5 to limit the positioning of the basalt fiber grid located in the lower mold 2, so as to avoid the situation that the fiber grid is easily misplaced or deformed during the pressurization process, which affects the dimensional accuracy and structural stability of the finished product. When the upper mold 3 and the lower mold 2 are driven to separate the molds, the positioning mechanism 5 will automatically shrink into the preset accommodating chamber 24, so as to avoid the problem that the fiber grid is difficult to demold smoothly due to the limitation of the positioning mechanism 5, which increases the difficulty of production and the complexity of subsequent processing.

[0020] By providing a linkage component, when the upper mold 3 and the lower mold 2 are driven to close the mold, the linkage component synchronously drives the positioning mechanism 5 to limit the positioning of the basalt fiber grid located in the lower mold 2, and when the upper mold 3 and the lower mold 2 are driven to separate the molds, the positioning mechanism 5 will automatically shrink into the preset accommodating chamber 24, thereby avoiding the problem that the fiber grid is difficult to demold smoothly due to the limitation of the positioning mechanism 5, which increases the difficulty of production and the complexity of subsequent processing. It has a high degree of automation and there is no need to set a driving component for the positioning mechanism 5, thereby reducing costs and operational complexity.

[0021] The positioning mechanism 5 includes a base plate 51, a limiting protrusion 52 is fixed on the upper surface of the base plate 51, and a plurality of strip plates 53 are welded at equal intervals on the two side walls of the base plate 51 along the length direction. A rotating shaft 55 is rotatably connected in the accommodating chamber 24 along the length direction, and a driving block 56 is fixed on the rotating shaft 55. The driving block 56 is semi-cylindrical, and one end of the strip plate 53 is attached to the horizontal plane of the driving block 56.

[0022] There are a number of limiting protrusions 52, and the limiting protrusions 52 are distributed in an array, corresponding one to one with the positioning holes 22. The upper surface of the limiting protrusion 52 is a contraction structure around the central protrusion to facilitate passing through the fiber mesh hole. The lower surface of the strip plate 53 is welded with a first spring 54.

[0023] Specifically, when the basalt fiber mesh to be formed is laid in the lower mold 2, and the fiber mesh holes correspond one-to-one to the positioning holes 22 opened on the groove 21, the limiting protrusion 52 extends from the accommodating chamber 24 and the positioning hole 22 and enters the groove 21 opened on the lower mold 2, so that the limiting protrusion 52 extends from the mesh hole of the basalt fiber mesh, thereby limiting the basalt fiber mesh and avoiding the situation that the basalt fiber mesh is easily dislocated or deformed during the pressurization process, affecting the dimensional accuracy and structural stability of the finished product.

[0024] Optionally, the limit protrusion 52 and the substrate 51 are detachable structures. The limit protrusion 52 and the substrate 51 are connected by snap connection or threaded connection. During actual use, different limit protrusions 52 can be automatically selected according to the mesh size of the basalt fiber grid, so as to improve the actual use range of the basalt fiber grid hot pressing and forming device.

[0025] The lower mold 2 is fixedly arranged in the external frame 1, the upper mold 3 is movably arranged in the external frame 1, and the lower mold 2 is directly below the upper mold 3.

[0026] A groove 21 is provided at the center of the upper surface of the lower mold 2. The two side walls of the lower mold 2 are provided with wire inlet and outlet grooves 23 that communicate with the groove 21. A plurality of positioning holes 22 are arranged in an array on the inner bottom plate of the groove 21.

[0027] Specifically, when using this basalt fiber grid hot pressing and forming device, first, the basalt fiber grid to be formed is laid in the lower mold 2, and the fiber grid holes are made to correspond one by one with the positioning holes 22 opened on the groove 21. When the upper mold 3 and the lower mold 2 are driven to close, the specific method of synchronously driving the positioning mechanism 5 by the linkage component to limit and position the basalt fiber grid located in the lower mold 2 is as follows: when the upper mold 3 is driven to move downward to close with the lower mold 2, the rotating shaft 55 is driven to rotate by the linkage component. The rotation of the rotating shaft 55 drives the driving block 56 to rotate. By the rotation of the driving block 56, the strip plate 53 is pushed upward. At this time, the first spring 54 is in a stretched state. The upward movement of the strip plate 53 drives the substrate 51 to move upward, and the limit protrusion 52 on the substrate 51 extends out from the positioning holes 22 and the fiber grid holes, so as to realize the positioning of the fiber grid, prevent the fiber grid from being easily displaced or deformed during the pressing process, and affect the dimensional accuracy and structural stability of the finished product. And when the extrusion is completed, when the upper mold 3 and the lower mold 2 are controlled to separate, the linkage component will synchronously drive the rotating shaft 55 to rotate in the reverse direction, thereby driving the driving block 56 to rotate in the reverse direction. At this time, under the pulling force of the first spring 54, the strip plate 53 automatically moves downward, driving the substrate 51 to move downward, so that the limit protrusion 52 on the substrate 51 contracts into the positioning holes 22, thus not affecting the demolding of the formed fiber grid and reducing its production difficulty.

[0028] Embodiment 2 Please refer to Figures 4-7 , on the basis of the above embodiment, this embodiment discloses a linkage component. The linkage component is composed of a first linkage mechanism and a second linkage mechanism. The first linkage mechanism and the second linkage mechanism are used to synchronously drive the positioning mechanism 5 to realize the limit positioning of the basalt fiber grid located in the lower mold 2.

[0029] The first linkage mechanism includes a strip-shaped driving plate 61. The strip-shaped driving plate 61 is inserted into the lower die 2, and the bottom end of the strip-shaped driving plate 61 extends into the accommodating chamber 24 and fits on the horizontal surface of the driving block 56. A slider 611 is welded to one side wall of the strip-shaped driving plate 61, and a second spring 612 is welded to the lower surface of the slider 611. A limiting plate 57 is welded to the inner wall of the accommodating chamber 24, and a chute 58 is formed on the outer wall of the limiting plate 57. The slider 611 is slidably connected to the chute 58. A positioning protrusion 601 for cooperating with the driving block 56 is welded to the other side wall of the strip-shaped driving plate 61.

[0030] The applicant found in actual work that the hydraulic telescopic rod 42 will inevitably have abnormalities. The abnormalities include that the telescopic stroke of the hydraulic telescopic rod 42 exceeds the preset stroke or is less than the preset stroke. These two abnormalities will affect the quality of the final product. Usually, when there is a problem with the quality of the final product, it is necessary to trace back and check to discover this abnormality, which has a lag.

[0031] In this implementation plan, for a further improved solution, when the telescopic stroke of the hydraulic telescopic rod 42 exceeds the preset stroke, specifically, the working state of the first linkage mechanism is as follows: when the upper die 3 and the lower die 2 are closed, the upper die 3 moves downward, and the upper die 3 will drive the driving plate 61 to move downward. When the driving plate 61 moves downward, it will push the driving block 56 to rotate, and the rotation of the driving block 56 will also drive the rotating shaft 55 to rotate, realizing the operation of the driving and positioning mechanism 5. And when the driving plate 61 moves downward, it will synchronously drive the slider 611 to move downward in the chute 58, driving the second spring 612 to contract. Therefore, when the upper die 3 moves upward, under the resilience of the second spring 612, it will also drive the driving plate 61 to move upward. And when the driving block 56 rotates 90 degrees, one end of the driving block 56 will abut against the lower surface of the positioning protrusion 601 at this time, thereby limiting the driving plate 61, and further limiting the downward movement height of the upper die 3 (that is, the stroke when the driving block 56 rotates 90 degrees and abuts against the positioning protrusion 601 is equal to the downward movement stroke of the upper die 3), avoiding excessive downward movement of the upper die 3 causing extrusion damage to the upper die 3 and the lower die 2, and realizing the limit support for the downward movement height of the upper die 3 to avoid affecting the quality of the final product.

[0032] When it is less than the preset stroke, a pressure switch can be embedded in the abutting surface between the positioning protrusion 601 and the driving block 56. The pressure switch is used to control the circuit connection state of the alarm device (such as a flash light). The alarm device is powered by an external power supply. When the upper die 3 moves downward and the driving block 56 rotates 90 degrees without abutting against the positioning protrusion 601, the flash light circuit is connected and lights up. When the flash light does not light up, it prompts the staff that the telescopic stroke of the hydraulic telescopic rod 42 is insufficient.

[0033] The second linkage mechanism includes a gear disc 62, a connecting shaft 63 and a rack 64. The connecting shaft 63 is welded and fixed at both ends of the rotating shaft 55. The gear disc 62 is welded and fixed on the connecting shaft 63. The rack 64 is welded and fixed on the lower surface of the upper die 3. The rack 64 is meshed and connected with the gear disc 62. By driving the rack 64 to move up and down, the gear disc 62 is driven to rotate.

[0034] Specifically, in this embodiment, the positioning mechanism 5 is synchronously driven by the first linkage mechanism and the second linkage mechanism, overcoming the defect that when only the two ends of the gear disc 62 are used to drive the rotating shaft 55 to rotate, the rotating shaft 55 is subjected to a large force and is prone to damage and deformation. On the basis of Embodiment 1, when the basalt fiber mesh to be formed is laid in the lower die 2 and the fiber mesh holes are made to correspond one by one with the positioning holes 22 opened on the groove 21, when the upper die 3 and the lower die 2 are driven to close the mold, when the upper die 3 moves downward, the upper die 3 will drive the driving plate 61 and the rack 64 to move downward. The downward movement of the rack 64 will drive the gear disc 62 to rotate. The rotation of the gear disc 62 drives the rotating shaft 55 to rotate, realizing the driving of the positioning mechanism 5 to work. And at the same time, when the driving plate 61 moves downward, it will push the driving block 56 to rotate, and the rotation of the driving block 56 will also drive the rotating shaft 55 to rotate, realizing the driving of the positioning mechanism 5 to work. And when the driving plate 61 moves downward, it synchronously drives the slider 611 to move downward in the sliding groove 58, driving the second spring 612 to contract. Therefore, when the upper die 3 moves upward, under the resilience of the second spring 612, the driving plate 61 will also be driven to move upward.

[0035] Embodiment 3 Please refer to Figures 1-2 and Figures 7-8 , this embodiment specifically discloses an external frame 1 and a driving mechanism 4. The external frame 1 is composed of two parallel support frames 11 and a connecting frame 13 bolted to the tops of the two support frames 11. A support seat 12 is welded below the connecting frame 13 between the two support frames 11. The lower die 2 is bolted to the support seat 12.

[0036] A rectangular protrusion 32 for cooperating with the groove 21 is arranged on the lower surface of the upper die 3. Rubber sealing gaskets 33 are arranged at both ends of the rectangular protrusion 32 along the length direction. During use, after the upper die 3 moves downward and fits with the lower die 2, the rectangular protrusion 32 will enter the groove 21 opened on the lower die 2. With the arrangement of the rubber sealing gaskets 33, the sealing effect on the groove 21 is improved. The rubber sealing gasket 33 is made of a high-temperature resistant polymer heat-resistant rubber material.

[0037] Fixed blocks 31 are welded at both ends of one side wall of the upper die 3 along the length direction. A driving mechanism 4 is arranged on the external frame 1. The driving mechanism 4 includes a driving seat 41. The driving seat 41 is bolted to the external frame 1. A hydraulic telescopic rod 42 is bolted to the driving seat 41. The movable end of the hydraulic telescopic rod 42 is fixedly connected with the fixed block 31.

[0038] On the basis of the above embodiments, a driving mechanism 4 is further added in this embodiment. The height of the upper die 3 is adjusted through the driving mechanism 4, and the demolding and mold closing of the upper die 3 and the lower die 2 are automatically realized. During use, the height of the upper die 3 is automatically adjusted by controlling the telescopic movement of the hydraulic telescopic rod 42.

[0039] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the descriptions in the above embodiments and the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. Basalt fiber grid hot pressing and forming device, including an external frame (1), a lower mold (2) and an upper mold (3), characterized in that, It further includes a linkage component. A positioning mechanism (5) is arranged in the lower die (2), and the linkage component is in transmission connection with the positioning mechanism (5). When the upper die (3) and the lower die (2) are driven to be closed, the linkage component synchronously drives the positioning mechanism (5) to limit and position the basalt fiber grid located in the lower die (2).

2. The basalt fiber grid hot pressing and forming device according to claim 1, wherein The lower die (2) is fixedly arranged in the external frame body (1), the upper die (3) is movably arranged in the external frame body (1), and the lower die (2) is located directly below the upper die (3).

3. The basalt fiber grid hot pressing and forming device according to claim 1, characterized in that, A groove (21) is provided at the center of the upper surface of the lower die (2). Inlet and outlet wire grooves (23) communicating with the groove (21) are formed in the side walls at both ends of the lower die (2). A plurality of positioning holes (22) distributed in an array are formed in the inner bottom plate of the groove (21). A receiving cavity (24) is formed inside the lower die (2), and the positioning mechanism (5) is located in the receiving cavity (24).

4. The basalt fiber grid hot pressing and forming device according to claim 3, characterized in that The positioning mechanism (5) includes a substrate (51). A limiting protrusion (52) is fixed on the upper surface of the substrate (51). A plurality of strip plates (53) are welded at equal intervals on the side walls along the length direction of the substrate (51). A rotating shaft (55) is rotatably connected in the receiving cavity (24) along the length direction. A driving block (56) is fixed on the rotating shaft (55). The driving block (56) is semi-cylindrical, and one end of the strip plate (53) is attached to the horizontal surface of the driving block (56).

5. The basalt fiber grid hot pressing and forming device according to claim 4, characterized in that, A plurality of limiting protrusions (52) are provided, and the plurality of limiting protrusions (52) are distributed in an array, corresponding to the plurality of positioning holes (22) one by one. The upper surface of the limiting protrusion (52) has a structure with a central protrusion and a surrounding contraction, so as to facilitate passing through the fiber grid holes. A first spring (54) is welded on the lower surface of the strip plate (53).

6. The basalt fiber grid hot pressing and forming device according to claim 4, wherein, The linkage component is composed of a first linkage mechanism and a second linkage mechanism. The first linkage mechanism and the second linkage mechanism are used to synchronously drive the positioning mechanism (5) to realize the limiting and positioning of the basalt fiber grid located in the lower die (2).

7. The basalt fiber grid hot pressing and forming device according to claim 6, characterized in that, The first linkage mechanism includes a strip-shaped driving plate (61). The strip-shaped driving plate (61) is inserted into the lower die (2). The bottom end of the strip-shaped driving plate (61) extends into the receiving cavity (24) and is attached to the horizontal surface of the driving block (56). A sliding block (611) is welded on one side wall of the strip-shaped driving plate (61). A second spring (612) is welded on the lower surface of the sliding block (611). A limiting plate (57) is welded on the inner wall of the receiving cavity (24). A sliding groove (58) is formed on the outer wall of the limiting plate (57). The sliding block (611) is slidably connected with the sliding groove (58). A positioning protrusion (601) used in cooperation with the driving block (56) is welded on the other side wall of the strip-shaped driving plate (61).

8. The basalt fiber grid hot pressing and forming device according to claim 7, wherein, The second linkage mechanism includes a gear disc (62), a connecting shaft (63) and a rack (64). The connecting shaft (63) is welded and fixed at both ends of the rotating shaft (55). The gear disc (62) is welded and fixed on the connecting shaft (63). The rack (64) is welded and fixed on the lower surface of the upper die (3). The rack (64) is meshed and connected with the gear disc (62). By driving the rack (64) to move up and down, the gear disc (62) is driven to rotate.

9. The basalt fiber grid hot pressing and forming device according to claim 1, wherein The external frame body (1) is composed of two parallel support frames (11) and a connecting frame (13) bolted and fixed at the tops of the two support frames (11). A support seat (12) is welded below the connecting frame (13) between the two support frames (11). The lower die (2) is bolted and fixed on the support seat (12).

10. The basalt fiber grid hot pressing and forming device according to claim 3, characterized in that, A rectangular protrusion (32) for cooperating with the mating groove (21) is provided on the lower surface of the upper die (3). Rubber sealing gaskets (33) are provided at both ends of the rectangular protrusion (32) along the length direction. Fixed blocks (31) are welded at both ends of one side wall of the upper die (3) along the length direction. A driving mechanism (4) is provided on the external frame body (1). The driving mechanism (4) includes a driving seat (41). The driving seat (41) is bolted and fixed on the external frame body (1). A hydraulic telescopic rod (42) is bolted and fixed on the driving seat (41). The movable end of the hydraulic telescopic rod (42) is fixedly connected with the fixed block (31).

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