A hot press for zinc sulfide

Abstract

The application discloses a zinc sulfide hot-pressing equipment and relates to the technical field of zinc sulfide production.The zinc sulfide hot-pressing equipment comprises an upper supporting table, an extrusion table, a lower supporting table and a base, a hydraulic oil cylinder is installed at the end of the upper supporting table away from the extrusion table, the telescopic end of the hydraulic oil cylinder is connected with the extrusion table, a limiting base is hoisted at the end of the extrusion table away from the upper supporting table, and a plurality of extrusion heads are installed at the end of the limiting base facing the lower supporting table; the lower supporting table is provided with a die hole matched with the extrusion heads, a slide rail is installed at the end of the lower supporting table facing the upper supporting table, a cleaning and discharging assembly is slidably arranged on the slide rail, the cleaning and discharging assembly comprises a polishing module and a discharging module, and the end of the polishing module facing the die hole is provided with a polishing head matched with the die hole. Thus, the inner wall of the die hole is polished by the polishing head, which avoids the influence of the zinc sulfide agglomerated particles remaining on the inner wall of the die hole on the subsequent zinc sulfide hot-pressing process, and in turn, the appearance of defective products is reduced.

Description

Technical Field

[0001] This invention relates to the field of zinc sulfide production technology, and more particularly to a zinc sulfide hot pressing device. Background Technology

[0002] Zinc sulfide powder tends to form a porous structure during conventional sintering, resulting in pores within the material. These pores reduce the mechanical strength and hardness of zinc sulfide. To address this, a hot-pressing process has been introduced into the production of zinc sulfide. By applying high temperature and high pressure simultaneously, diffusion and plastic flow between particles are promoted, significantly reducing porosity and thus obtaining a high-density bulk material.

[0003] To address this, Chinese Patent Application No. CN202420163389.0 discloses "A Zinc Sulfide Hot Pressing Equipment," which includes an operating table, a moving mechanism, and a demolding mechanism. The moving mechanism is located at the bottom of the operating table and includes a fixed plate, a rotating rod, a transmission gear, a rectangular opening, and toothed blocks. A rectangular opening is provided at the top of the operating table, and toothed blocks are slidably installed on the inner walls of both sides of the rectangular opening. A rotating rod is rotatably installed on the adjacent side of the fixed plate, and a transmission gear is fixedly installed on the outer wall of the rotating rod, meshing with the toothed blocks. The demolding mechanism is located above the operating table and includes a hinge frame, a connecting plate, and a lower mold. The connecting plate is hinged inside the hinge frame, and one side of the connecting plate is fixedly connected to one side of the lower mold. This facilitates the feeding and unloading of materials by operators, prevents accidental contact with the heated pressing mold during operation, avoids burns from the device, and improves the safety of the equipment.

[0004] However, the above solution has a problem: when zinc sulfide powder is extruded in the mold, some powder particles will adhere to the mold due to factors such as high temperature and static electricity. After long-term use, these powder particles will gradually connect into blocks, affecting the hot pressing quality of subsequent zinc sulfide particles. Summary of the Invention

[0005] To address the above-mentioned shortcomings, the present invention aims to provide a zinc sulfide hot pressing device, which solves the problem that zinc sulfide agglomerates are easily left on the inner wall of the mold hole in the existing zinc sulfide hot pressing device, affecting the quality of subsequent hot pressing.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A zinc sulfide hot pressing device comprises, from top to bottom, an upper support platform, an extrusion platform, a lower support platform, and a base. Several support columns are positioned between the upper support platform and the base. The extrusion platform and the lower support platform are slidably connected to the support columns. A hydraulic cylinder is installed at the end of the upper support platform away from the extrusion platform, and the telescopic end of the hydraulic cylinder is connected to the extrusion platform. A limiting base is suspended at the end of the extrusion platform away from the upper support platform, and several extrusion heads are installed at the end of the limiting base facing the lower support platform. The lower support platform has mold holes that mate with the extrusion heads. A demolding platform and a hydraulic telescopic cylinder are positioned between the lower support platform and the base. A top platform is provided on the top of the demolding platform, and a portion of the top platform is slidably disposed within the mold holes. The hydraulic telescopic cylinder is located on one side of the demolding platform, with one end connected to the bottom of the lower support platform and the other end connected to the base. A slide rail is installed on one end of the lower support platform facing the upper support platform. A cleaning and unloading component is slidably mounted on the slide rail. The cleaning and unloading component includes a grinding module and an unloading module. The grinding module has a grinding head that matches the mold hole at one end, and the unloading module has an unloading port that matches the mold hole at one end.

[0007] The lower support platform is equipped with a drive motor at the end away from the mold hole. The power end of the drive motor is connected to a transmission screw. The end of the transmission screw away from the drive motor is connected to a positioning platform. The transmission screw is parallel to the slide rail. One side of the cleaning and unloading assembly is threadedly connected to the transmission screw. The bottom of the cleaning and unloading assembly is slidably connected to the slide rail.

[0008] The grinding module includes a support frame. A first motor and a second motor are mounted on the end of the support frame facing the material feeding module. A first lead screw is connected to the power end of the first motor, and a second lead screw is connected to the power end of the second motor. Both the first and second lead screws are rotatably connected to the end of the support frame away from the material feeding module. A first protective shell is provided on the first lead screw, and a third motor is installed inside the first protective shell. A second protective shell is provided on the second lead screw, and a fourth motor is installed inside the second protective shell. A limiting platform is provided between the first and second protective shells. A third lead screw is connected to the power end of the third motor, and the end of the third lead screw away from the third motor is rotatably connected to the limiting platform. A fourth lead screw is connected to the power end of the fourth motor, and the end of the fourth lead screw away from the fourth motor is rotatably connected to the limiting platform. A sealing shell is provided on both the third and fourth lead screws, and a fifth motor is installed inside the sealing shell. One end of the grinding head is connected to the power end of the fifth motor.

[0009] The support frame is provided with several limiting posts in the circumferential direction, and the support frame is slidably connected to the limiting posts. The grinding module also includes a sixth motor and a fifth lead screw. The fifth lead screw is arranged vertically, one end of the fifth lead screw is connected to the power end of the sixth motor, and the fifth lead screw is threadedly connected to the support frame.

[0010] The grinding head includes a grinding section and a connecting section. The connecting section is located between the grinding section and the sealing shell. Both the connecting section and the grinding section are provided with an inner cavity. Several elongated grinding brushes are provided on the side wall of the grinding section. The length direction of the grinding brushes is the same as the length direction of the grinding section. Several grinding brushes are arranged around the grinding section. Several exhaust holes are provided between adjacent grinding brushes.

[0011] The connecting section has a first gear installed on its side wall, and the power end of the fifth motor is connected to a second gear, with the first gear and the second gear meshing together. The end of the sealing shell away from the grinding head is connected to an exhaust pipe, and an adapter is provided between the exhaust pipe and the grinding head. The end of the connecting section away from the grinding section is rotatably connected to the adapter, and the end of the adapter away from the connecting section is connected to the exhaust pipe.

[0012] The top platform includes a fixed platform and a reset platform. The reset platform includes a mounting cavity. The top of the fixed platform is slidably disposed in the mounting cavity. The top of the fixed platform is provided with a clearance groove. A plurality of piezoelectric ceramics are installed on the top of the mounting cavity. The clearance groove and the piezoelectric ceramics are arranged opposite to each other.

[0013] A reset spring is provided between the top of the fixed platform and the top of the mounting cavity, and the reset spring is arranged around the clearance groove.

[0014] The reset platform has a heating platform at the end away from the fixed platform, and an electric heating wire is installed inside the heating platform. A heat insulation layer is provided between the heating platform and the reset platform.

[0015] The bottom of the extrusion table is equipped with a dust collection cylinder, which is arranged around the extrusion head. The side wall of the dust collection cylinder has a dust collection hole, and the outer wall of the dust collection cylinder is connected to a dust collection pipe. The end of the dust collection pipe away from the dust collection cylinder is connected to an exhaust device.

[0016] After adopting the above technical solution, the beneficial effects of the present invention are: First, a grinding head is used to grind and clean the inner wall of the mold hole. This prevents zinc sulfide particles remaining on the inner wall of the mold hole from affecting the subsequent zinc sulfide hot pressing process, thereby reducing the occurrence of defective products. Second, the exhaust port on the grinding head operates while the grinding head is cleaning the inner wall of the mold hole, ensuring that the zinc sulfide particles cleaned off the inner wall of the mold hole are promptly removed, preventing residual zinc sulfide particles from accumulating in the mold hole. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a zinc sulfide hot pressing equipment; Figure 2 This is a top view of the lower support platform; Figure 3 This is a structural diagram of the support frame; Figure 4 Top sectional view of the cleaning and unloading assembly; Figure 5 This is a structural diagram of the grinding head; Figure 6 This is a cross-sectional view of the grinding head; Figure 7 This is a structural diagram of the top platform; Figure 8 This is a structural diagram of a vacuum cleaner cylinder.

[0018] In the diagram: 1-Upper support platform, 2-Extrusion platform, 3-Lower support platform, 4-Base, 5-Support column, 6-Hydraulic cylinder, 7-Limiting base, 8-Extrusion head, 9-Mold hole, 10-Demolding platform, 101-Top platform, 11-Hydraulic telescopic cylinder, 12-Slide rail, 13-Cleaning and unloading assembly, 14-Grinding module, 15-Unloading module, 16-Grinding head, 17-Unloading port, 18-Drive motor, 19-Transmission screw, 20-Positioning platform, 21-Support frame, 210-First motor, 22-Second motor, 23-First screw, 24-Second screw, 25-First protective shell, 26-Second protective shell 27-Third motor, 28-Fourth motor, 29-Limiting platform, 30-Third lead screw, 31-Fourth lead screw, 32-Sealing shell, 33-Fifth motor, 34-Limiting post, 35-Sixth motor, 36-Fifth lead screw, 37-Connecting section, 38-Grinding section, 39-Grinding brush, 40-Exhaust hole, 41-First gear, 42-Second gear, 43-Exhaust duct, 44-Adapter, 45-Fixed platform, 46-Reset platform, 47-Mounting cavity, 48-Allowing groove, 49-Piezoelectric ceramic, 50-Reset spring, 51-Electric heating wire, 52-Dust suction cylinder, 53-Dust suction hole, 54-Dust suction duct. Detailed Implementation

[0019] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0020] like Figure 1-8As shown, a zinc sulfide hot pressing device comprises, from top to bottom, an upper support platform 1, an extrusion platform 2, a lower support platform 3, and a base 4. Several support columns 5 are provided between the upper support platform 1 and the base 4. The extrusion platform 2 and the lower support platform 3 are slidably connected to the support columns 5. A hydraulic cylinder 6 is installed at the end of the upper support platform 1 away from the extrusion platform 2. The telescopic end of the hydraulic cylinder 6 is connected to the extrusion platform 2. A limiting base 7 is suspended at the end of the extrusion platform 2 away from the upper support platform 1. Several extrusion heads 8 are installed at the end of the limiting base 7 facing the lower support platform 3. The lower support platform 3 is provided with mold holes 9 that mate with the extrusion heads 8. A demolding platform 10 and a hydraulic telescopic cylinder 11 are provided between the lower support platform 3 and the base 4. A top platform 101 is provided on the top of the mold platform 10. A portion of the top platform 101 is slidably disposed within the mold hole 9. The hydraulic telescopic cylinder 11 is located on one side of the demolding platform 10. One end of the hydraulic telescopic cylinder 11 is connected to the bottom of the lower support platform 3, and the other end of the hydraulic telescopic cylinder 11 is connected to the base 4. A slide rail 12 is installed on the end of the lower support platform 3 facing the upper support platform 1. A cleaning and unloading assembly 13 is slidably disposed on the slide rail 12. The cleaning and unloading assembly 13 includes a grinding module 14 and an unloading module 15. The grinding module 14 is provided with a grinding head 16 matching the mold hole 9 on the end facing the mold hole 9, and the unloading module 15 is provided with a unloading port 17 matching the mold hole 9 on the end facing the mold hole 9.

[0021] During operation, the cleaning and feeding assembly 13 needs to be controlled to move laterally on the slide rail 12. When the feeding module 15 moves above the mold hole 9, the feeding assembly delivers zinc sulfide powder into the mold hole 9. After the zinc sulfide powder is fed out, the cleaning and feeding assembly 13 resets. Then, the hydraulic cylinder 6 pushes the extrusion table 2 to slide along the support column 5 towards the lower support table 3. At this time, the limiting base 7 will slide down with the extrusion table 2, and finally the extrusion head 8 enters the mold hole 9. The extrusion head 8 and the top table 101 together extrude the zinc sulfide powder in the mold hole 9. At the same time, the zinc sulfide powder in the mold hole 9 is heated at high temperature. Under the action of high temperature and high pressure, the dispersed zinc sulfide powder is compacted to form block zinc sulfide. After the hot pressing is completed, the limiting base 7 resets, and the lower support table 3 moves towards the demolding table 10 under the drive of the hydraulic telescopic cylinder 11. During this process, the top table 101 gradually pushes out the zinc sulfide block, waiting for the staff to collect it.

[0022] Subsequently, the lower support platform 3 resets, and the cleaning and unloading assembly 13 moves above the mold hole 9. The grinding head 16 of the grinding module 14 is then inserted into the mold hole 9. The grinding head 16 cleans the residual zinc sulfide particles on the inner wall of the mold hole 9, thus preventing these particles from affecting subsequent hot pressing operations and reducing the occurrence of defective products. After the grinding head 16 completes cleaning, the unloading module 15 moves above the mold hole 9, ready for the next hot pressing process.

[0023] like Figure 2-4 To facilitate the reciprocating movement of the cleaning and unloading assembly 13, a drive motor 18 is installed at the end of the lower support platform 3 away from the mold hole 9. A transmission screw 19 is connected to the power end of the drive motor 18, and a positioning platform 20 is connected to the end of the transmission screw 19 away from the drive motor 18. The transmission screw 19 is parallel to the slide rail 12. One side of the cleaning and unloading assembly 13 is threadedly connected to the transmission screw 19, and the bottom of the cleaning and unloading assembly 13 is slidably connected to the slide rail 12. The drive motor 18 drives the transmission screw 19 to rotate. Because the transmission screw 19 is threadedly connected to one side of the cleaning and unloading assembly 13, the transmission screw 19 applies a thrust to the cleaning and unloading assembly 13 when it rotates. Therefore, the cleaning and unloading assembly 13 slides along the slide rail 12 under the drive of the transmission screw 19.

[0024] To ensure the polishing effect of the polishing head 16, the polishing module 14 includes a support frame 21. A first motor 210 and a second motor 22 are mounted on the end of the support frame 21 facing the material feeding module 15. The power end of the first motor 210 is connected to a first lead screw 23, and the power end of the second motor 22 is connected to a second lead screw 24. Both the first lead screw 23 and the second lead screw 24 are rotatably connected to the end of the support frame 21 away from the material feeding module 15. A first protective shell 25 is provided on the first lead screw 23, and a third motor 27 is installed inside the first protective shell 25. A second protective shell 26 is provided on the second lead screw 24. A fourth motor 28 is installed inside the protective shell 26. A limiting platform 29 is provided between the first protective shell 25 and the second protective shell 26. The power end of the third motor 27 is connected to a third lead screw 30, and the end of the third lead screw 30 away from the third motor 27 is rotatably connected to the limiting platform 29. The power end of the fourth motor 28 is connected to a fourth lead screw 31, and the end of the fourth lead screw 31 away from the fourth motor 28 is rotatably connected to the limiting platform 29. A sealing shell 32 is provided on both the third lead screw 30 and the fourth lead screw 31. A fifth motor 33 is installed inside the sealing shell 32. One end of the grinding head 16 is connected to the power end of the fifth motor 33. In this design, the first lead screw 23 and the second lead screw 24 are parallel, and the third lead screw 30 and the fourth lead screw 31 are parallel. The first lead screw 23 and the third lead screw 30 are perpendicular; this can be understood as the first lead screw 23 being the Y-axis and the third lead screw 30 being the X-axis. When the first motor 210 and the second motor 22 are working, they drive the first protective shell 25, the second protective shell 26, the limiting stage 29, and the sealing shell 32 to move along the Y-axis. When the third motor 27 and the fourth motor 28 are working, they drive the sealing shell 32 to move along the X-axis. Since the grinding head 16 is installed at the bottom of the sealing shell 32, with the cooperation of multiple motors, the grinding head 16 will move in the plane formed by the X-axis and the Y-axis, that is, the grinding head 16 can move along the inner contour of the mold hole 9. When the fifth motor 33 drives the grinding head 16 to rotate, the grinding head 16 will grind and clean the various areas of the inner wall of the mold hole 9.

[0025] To facilitate the insertion of the grinding head 16 into the mold hole 9, the support frame 21 is provided with several limiting posts 34 circumferentially. The support frame 21 is slidably connected to the limiting posts 34. The grinding module 14 also includes a sixth motor 35 and a fifth lead screw 36. The fifth lead screw 36 is vertically arranged, with one end connected to the power end of the sixth motor 35, and the fifth lead screw 36 is threadedly connected to the support frame 21. The sixth motor 35 drives the fifth lead screw 36 to rotate. Since the support frame 21 is threadedly connected to the fifth lead screw 36, the support frame 21 moves up and down along the limiting posts 34 under the drive of the fifth lead screw 36. Driven by the support frame 21, the grinding head 16 will move up and down, which further expands the grinding range of the grinding head 16 in the mold hole 9.

[0026] After grinding by grinding head 16, residual zinc sulfide particles in mold hole 9 will fall to the top of top platform 101. To avoid this problem, such as Figure 5-6 As shown, the grinding head 16 includes a grinding section 38 and a connecting section 37. The connecting section 37 is located between the grinding section 38 and the sealing shell 32. Both the connecting section 37 and the grinding section 38 are provided with an inner cavity. Several elongated grinding brushes 39 are provided on the side wall of the grinding section 38, and the several grinding brushes 39 are arranged around the grinding section 38. Several exhaust holes 40 are provided between adjacent grinding brushes 39. A first gear 41 is installed on the side wall of the connecting section 37. A second gear 42 is connected to the power end of the fifth motor 33. The first gear 41 and the second gear 42 are meshed. An exhaust pipe 43 is connected to the end of the sealing shell 32 away from the grinding head 16. An adapter 44 is provided between the exhaust pipe 43 and the grinding head 16. The end of the connecting section 37 away from the grinding section 38 is rotatably connected to the adapter 44. The end of the adapter 44 away from the connecting section 37 is connected to the exhaust pipe 43.

[0027] To facilitate the cleaning of a larger area by the polishing brush 39, the length direction of the polishing brush 39 is parallel to the axis of the polishing section 38.

[0028] Because there are exhaust holes 40 between the grinding brushes 39, and the grinding head 16 works together with the exhaust holes 40, the zinc sulfide particles scattered during grinding and cleaning by the grinding head 16 are sucked into the exhaust holes 40 and sequentially sent to the grinding section 38, the connecting section 37, and the adapter 44, until the zinc sulfide particles reach the exhaust duct 43. The end of the exhaust duct 43 away from the adapter 44 is connected to a collection device, which is equipped with an exhaust fan. Under the action of the exhaust fan, the zinc sulfide particles are recovered by the collection device.

[0029] After the zinc sulfide powder is fed into the die, it needs to be manually leveled in the die hole 9 using a scraper. This operation requires workers to put their hands under the extrusion head 8, which is extremely dangerous. Therefore, if Figure 7As shown, the top platform 101 includes a fixed platform 45 and a reset platform 46. The reset platform 46 includes a mounting cavity 47. The top of the fixed platform 45 is slidably disposed within the mounting cavity 47. A clearance groove 48 is provided on the top of the fixed platform 45. A plurality of piezoelectric ceramics 49 are mounted on the top of the mounting cavity 47, with the clearance groove 48 and the piezoelectric ceramics 49 positioned opposite each other. During operation, the piezoelectric ceramics 49 drive the reset platform 46 to vibrate, causing the zinc sulfide powder to gradually flatten under the influence of the reset platform 46. Simultaneously, the vibration reduces the space between the zinc sulfide powder particles, making the zinc sulfide powder in the mold holes 9 more compact, which facilitates subsequent hot pressing. The clearance groove 48 provides space for the piezoelectric ceramics 49, preventing damage caused by direct contact between the piezoelectric ceramics 49 at the bottom of the reset platform 46 and the fixed platform 45 when the reset platform 46 is pressed down.

[0030] Piezoelectric ceramic 49 is a functional ceramic material capable of converting mechanical energy and electrical energy into each other. Besides piezoelectricity, piezoelectric ceramic 49 also possesses dielectric and elastic properties. When an electric field is applied along the polarization direction of piezoelectric ceramic 49, it undergoes minute deformation (stretching or bending). Each piezoelectric ceramic 49 has its inherent resonant frequency. When the frequency of the applied alternating voltage matches this inherent frequency, resonance occurs, at which point the vibration amplitude reaches its maximum, and the energy conversion efficiency is highest. Utilizing this characteristic, the piezoelectric ceramic 49 drives the reset stage 46 to vibrate during operation.

[0031] To reduce the impact of vibration on other structures caused by the reset platform 46, a reset spring 50 is provided between the top of the fixed platform 45 and the top of the mounting cavity 47, and the reset spring 50 is arranged around the clearance groove 48.

[0032] After the zinc sulfide powder in the mold hole 9 is leveled, the extrusion head 8 presses down for hot pressing. An electric heating wire 51 is installed inside the lower support platform 3, surrounding the mold hole 9, ensuring uniform heating. To accelerate the heating of the zinc sulfide powder at both the top and bottom of the mold hole 9, electric heating wires 51 are installed inside both the extrusion head 8 and the top platform 101. Therefore, a heating platform is installed at the end of the reset platform 46 away from the fixed platform 45, and the electric heating wire 51 is installed inside the heating platform. A heat insulation layer is provided between the heating platform and the reset platform 46. The electric heating wire 51 heats the top of the top platform 101, allowing for rapid heating of the zinc sulfide powder in the bottom area of ​​the mold hole 9. The heat insulation layer prevents the high temperature of the electric heating wire 51 from damaging the piezoelectric ceramic 49.

[0033] In this design, a stop is provided on the side wall of the fixed platform 45. The stop is slidably connected to the inner wall of the reset platform 46. The purpose of the stop is to prevent the reset platform 46 from rotating and to prevent the reset spring 50 from being stretched and damaged due to the rotation of the reset platform 46.

[0034] When the extrusion head 8 presses down, some powder will be ejected from the gap. To avoid this powder affecting subsequent work, it needs to be sucked away. Therefore, as follows: Figure 8 As shown, a dust collection cylinder 52 is installed at the bottom of the extrusion table 2, and the dust collection cylinder 52 is arranged around the extrusion head 8. Dust collection holes 53 are opened on the side wall of the dust collection cylinder 52, and a dust collection pipe 54 is connected to the outer wall of the dust collection cylinder 52. An exhaust device is connected to the end of the dust collection pipe 54 away from the dust collection cylinder 52. When one end of the extrusion head 8 just enters the mold hole 9, the exhaust device is not turned on temporarily to prevent the zinc sulfide powder in the mold hole 9 from being sucked away by the dust collection cylinder 52 before hot pressing. When the extrusion head 8 extends into the mold hole 9 to the preset hot pressing position, the exhaust device is turned on to suck away the powder sprayed from the gap between the mold hole 9 and the extrusion head 8.

[0035] In summary, the advantages of this solution are as follows: First, the grinding head 16 is used to grind and clean the inner wall of the mold hole 9, which avoids the agglomerated zinc sulfide particles remaining on the inner wall of the mold hole 9 from affecting the subsequent zinc sulfide hot pressing process, thereby reducing the occurrence of defective products. Second, the exhaust hole 40 on the grinding head 16 will operate when the grinding head 16 cleans the inner wall of the mold hole 9, which allows the zinc sulfide particles cleaned from the inner wall of the mold hole 9 to be sent away in time, preventing the accumulation of residual zinc sulfide particles in the mold hole 9.

[0036] This invention is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort are within the scope of protection of this invention.

Claims

1. A zinc sulfide hot pressing device, characterized in that, The following are arranged sequentially from top to bottom: an upper support platform (1), an extrusion platform (2), a lower support platform (3), and a base (4). Several support columns (5) are arranged between the upper support platform (1) and the base (4). The extrusion platform (2) and the lower support platform (3) are slidably connected to the support columns (5). A hydraulic cylinder (6) is installed at the end of the upper support platform (1) away from the extrusion platform (2). The telescopic end of the hydraulic cylinder (6) is connected to the extrusion platform (2). A limiting base (7) is suspended at the end of the extrusion platform (2) away from the upper support platform (1). The end of the limiting base (7) facing the lower support platform (3) is... The lower support platform (3) is equipped with a number of extrusion heads (8); the lower support platform (3) is provided with a mold hole (9) that cooperates with the extrusion head (8); a demolding platform (10) and a hydraulic telescopic cylinder (11) are provided between the lower support platform (3) and the base (4); a top platform (101) is provided on the top of the demolding platform (10); a part of the top platform (101) is slidably disposed in the mold hole (9); the hydraulic telescopic cylinder (11) is located on one side of the demolding platform (10); one end of the hydraulic telescopic cylinder (11) is connected to the bottom of the lower support platform (3); and the other end of the hydraulic telescopic cylinder (11) is connected to the base (4). The lower support platform (3) is equipped with a slide rail (12) at one end facing the upper support platform (1). A cleaning and unloading assembly (13) is slidably arranged on the slide rail (12). The cleaning and unloading assembly (13) includes a grinding module (14) and an unloading module (15). The grinding module (14) is provided with a grinding head (16) matching the mold hole (9) at one end facing the mold hole (9). The unloading module (15) is provided with a unloading port (17) matching the mold hole (9) at one end facing the mold hole (9). The grinding head (16) includes a grinding section (38) and a connecting section (37). The connecting section (37) is located between the grinding section (38) and the sealing shell (32). Both the connecting section (37) and the grinding section (38) are provided with an inner cavity. Several long strip-shaped grinding brushes (39) are provided on the side wall of the grinding section (38). The length direction of the grinding brushes (39) is the same as the length direction of the grinding section (38). Several grinding brushes (39) are arranged around the grinding section (38). Several exhaust holes (40) are provided between adjacent grinding brushes (39). The top platform (101) includes a fixed platform (45) and a reset platform (46). The reset platform (46) includes a mounting cavity (47). The top of the fixed platform (45) is slidably disposed in the mounting cavity (47). The top of the fixed platform (45) is provided with a clearance groove (48). A plurality of piezoelectric ceramics (49) are installed on the top of the mounting cavity (47). The clearance groove (48) and the piezoelectric ceramics (49) are disposed opposite to each other.

2. The zinc sulfide hot pressing equipment according to claim 1, characterized in that: The lower support platform (3) is provided with a drive motor (18) at one end away from the mold hole (9). The power end of the drive motor (18) is connected to a transmission screw (19). The end of the transmission screw (19) away from the drive motor (18) is connected to a positioning platform (20). The transmission screw (19) is parallel to the slide rail (12). One side of the cleaning and unloading assembly (13) is threadedly connected to the transmission screw (19). The bottom of the cleaning and unloading assembly (13) is slidably connected to the slide rail (12).

3. The zinc sulfide hot pressing equipment according to claim 2, characterized in that: The grinding module (14) includes a support frame (21). A first motor (210) and a second motor (22) are installed on the end of the support frame (21) facing the feeding module (15). The power end of the first motor (210) is connected to a first lead screw (23), and the power end of the second motor (22) is connected to a second lead screw (24). The first lead screw (23) and the second lead screw (24) are rotatably connected to the end of the support frame (21) away from the feeding module (15). A first protective shell (25) is provided on the first lead screw (23), and a third motor (27) is installed inside the first protective shell (25). A second protective shell (26) is provided on the second lead screw (24), and a third motor (27) is installed inside the second protective shell (26). There is a fourth motor (28), a limiting platform (29) is provided between the first protective shell (25) and the second protective shell (26), the power end of the third motor (27) is connected to a third lead screw (30), the end of the third lead screw (30) away from the third motor (27) is rotatably connected to the limiting platform (29), the power end of the fourth motor (28) is connected to a fourth lead screw (31), the end of the fourth lead screw (31) away from the fourth motor (28) is rotatably connected to the limiting platform (29); a sealing shell (32) is provided on both the third lead screw (30) and the fourth lead screw (31), a fifth motor (33) is installed in the sealing shell (32), and one end of the grinding head (16) is connected to the power end of the fifth motor (33).

4. The zinc sulfide hot pressing equipment according to claim 3, characterized in that: The support frame (21) is provided with several limiting posts (34) in the circumferential direction. The support frame (21) is slidably connected to the limiting posts (34). The grinding module (14) also includes a sixth motor (35) and a fifth lead screw (36). The fifth lead screw (36) is arranged vertically. One end of the fifth lead screw (36) is connected to the power end of the sixth motor (35). The fifth lead screw (36) is threadedly connected to the support frame (21).

5. The zinc sulfide hot pressing equipment according to claim 4, characterized in that: A first gear (41) is installed on the side wall of the connecting section (37), and a second gear (42) is connected to the power end of the fifth motor (33). The first gear (41) and the second gear (42) are meshed together. The end of the sealing shell (32) away from the grinding head (16) is connected to an exhaust pipe (43). An adapter (44) is provided between the exhaust pipe (43) and the grinding head (16). The end of the connecting section (37) away from the grinding section (38) is rotatably connected to the adapter (44), and the end of the adapter (44) away from the connecting section (37) is connected to the exhaust pipe (43).

6. The zinc sulfide hot pressing equipment according to claim 1, characterized in that: A reset spring (50) is provided between the top of the fixed platform (45) and the top of the mounting cavity (47), and the reset spring (50) is arranged around the clearance groove (48).

7. A zinc sulfide hot pressing device according to claim 6, characterized in that: A heating platform is provided at the end of the reset platform (46) away from the fixed platform (45). An electric heating wire (51) is installed in the heating platform, and a heat insulation layer is provided between the heating platform and the reset platform (46).

8. The zinc sulfide hot pressing equipment according to claim 1, characterized in that: The bottom of the extrusion table (2) is equipped with a dust collection cylinder (52), which is arranged around the extrusion head (8). A dust collection hole (53) is opened on the side wall of the dust collection cylinder (52), and a dust collection pipe (54) is connected to the outer wall of the dust collection cylinder (52). A suction device is connected to the end of the dust collection pipe (54) away from the dust collection cylinder (52).

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