Grain refining stirring device for die steel casting

Abstract

The invention discloses a grain refinement stirring device for die steel casting, which comprises a box body, supporting legs are fixedly mounted on the outer wall of the box body, and a stirring mechanism is arranged in the box body; the stirring mechanism comprises a motor, a first fixing block and a fixing rod, the motor is fixedly installed at the top end of the box body, a short rotating shaft is fixedly installed at the output end of the motor and penetrates through the top end of the box body, and the outer wall of the short rotating shaft is rotationally connected with the box body through a first bearing. A first folding plate and a second folding plate also drive a first stirring plate to do circular motion, so that the stirring effect on the molten steel can be greatly improved, the flowability of the molten steel in the box body is improved, and the components in the molten steel are mixed more uniformly; the problems that in comparison files, two driving motors need to be used for achieving stirring of molten steel at different angles, so that the use cost is high, and practicability is low are solved.

Description

Technical Field

[0001] The invention relates to the technical field of die steel casting equipment, in particular to a grain refining and stirring device for die steel casting. Background Art

[0002] 4Cr5MoSiV1 (H13) hot working die steel is a chromium-based air-cooled hardening hot working die steel. It is widely used in hot forging dies, hot extrusion dies and large die-casting die materials. It is one of the most widely used hot working die steels in the world. H13 hot working die steel is often used in high temperature and high pressure environments in industrial production. It is subjected to high temperature and high pressure, strong friction and cyclic impact for a long time. If it does not have high strength and toughness, the mold itself will produce fatigue cracks and fail or even break, greatly reducing the service life of the mold. Therefore, how to improve the strength and toughness of H13 hot working die steel to increase the service life of the mold and reduce production costs is an important research direction. Traditionally, H13 hot working die steel is produced by gravity casting, which relies on gravity to make the molten steel solidify naturally in the mold. Since the temperature of the molten steel in the center and the edge of the mold is inconsistent, there is a large temperature gradient. Natural cooling and solidification will form a large number of columnar crystals in the ingot, which greatly reduces the performance of H13 hot working die steel. At the same time, due to the high content of alloy elements in H13 hot working die steel itself, it is very easy to produce component segregation during solidification, and the core structure is extremely uneven. Coarse liquid carbides are formed along the grain boundaries in the structure. If it is not improved, it will cause strong stress concentration in the steel matrix, thereby generating microcracks and quickly spreading into large cracks in the matrix, eventually leading to fatigue failure. According to a Chinese patent, a grain refining stirring device for die steel casting is disclosed, and its announcement number is: CN114288896A. The patent provides power through a stirring motor to drive two rotating shafts to rotate and stir the molten steel. At the same time, the power is provided by a transmission device, and the positions of the two rotating shafts can be adjusted, so that the two rotating shafts can be in different stirring positions, thereby increasing the fluidity of the molten steel, so that the temperature of the molten steel at the edge and the center is uniform, and the composition of the molten steel is made more uniform under the action of stirring, thereby reducing the formation of columnar crystals, forming a large number of small and uniformly sized equiaxed crystals, reducing the degree of component segregation of the hot working die steel ingot, and thus increasing the service life of the mold; However, this patent requires two driving motors to achieve stirring of the molten steel at different angles, which results in high cost of use. Moreover, extending the motor into the box body can easily damage the motor and make it unusable, thus having low practicality. Therefore, we propose a grain refining stirring device for mold steel casting. Summary of the invention

[0003] The object of the present invention is to provide a grain refining and stirring device for die steel casting to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: A grain refining stirring device for die steel casting, comprising a box body, a support leg is fixedly installed on the outer wall of the box body, and a stirring mechanism is arranged inside the box body; The stirring mechanism comprises a motor, a fixed block 1, and a fixed rod. The motor is fixedly mounted on the top of the box body, a short rotating shaft is fixedly mounted on the output end of the motor, the short rotating shaft passes through the top of the box body, and the outer wall of the short rotating shaft is rotatably connected to the box body through a bearing 1, a turntable is fixedly mounted on the bottom end of the short rotating shaft, a reciprocating screw rod is rotatably connected to the bottom end of the turntable through a bearing 2, a moving block is threadedly sleeved on the outer wall of the reciprocating screw rod, a connecting plate is fixedly mounted on the outer wall of the moving block, a sliding rod is fixedly mounted on the bottom end of the turntable, a rod hole is opened on the connecting plate, and the sliding rod is connected through a rod hole The hole movably passes through the connecting plate, and folding plates 1 are hinged on both sides of the moving block, and the fixed rod is fixedly installed at the bottom end of the inner wall of the box body. The outer wall of the fixed rod is provided with a fixed block 2 through a bearing 3 rotation sleeve, and folding plates 2 are hinged on both sides of the fixed block 2, and the folding plates 2 and folding plates 1 are both hinged to the fixed block 1. A support plate is fixedly installed on the outer wall of the reciprocating screw rod, and the support plate is fixedly installed on the inner wall of the box body, a fixed plate is fixedly installed on the outer side of the fixed block, and a stirring plate 2 is fixedly installed on the outer side of the fixed plate, and a stirring plate 1 is fixedly installed on the outer wall of the folding plate 2 and the outer wall of the folding plate 1.

[0005] According to the above technical solution, the number of the sliding rods and the connecting plates are both two, and the sliding rods are adapted to the rod holes. By providing the sliding rods, the turntable can drive the moving block to rotate through the sliding rods.

[0006] According to the above technical solution, a partition box is fixedly installed on the top of the box body, the motor is arranged inside the partition box, and the number of stirring plates 1 and 2 is several. By setting the partition box, a certain protective effect can be played on the motor to ensure the normal service life of the motor.

[0007] According to the above technical solution, a discharge pipe is connected to the bottom end of the box body, a ring plate is fixedly installed on the outer wall of the discharge pipe, and a discharge mechanism is arranged inside the discharge pipe.

[0008] According to the above technical solution, the discharging mechanism includes a toothed disc, a gear rack, a fixed frame 1, a long rotating rod, and a cover plate. The toothed disc is fixedly installed at the bottom end of the fixed block 2, the gear rack is arranged above the discharging pipe, the toothed disc is meshed with the gear rack, a short rotating rod is fixedly installed at the bottom end of the gear rack, the fixed frame 1 is rotatably sleeved on the outer wall of the short rotating rod through a bearing 4, and the fixed frame 1 is fixedly installed on the inner wall of the discharging pipe, the outer wall of the long rotating rod is rotatably sleeved with a fixed frame 2 through a bearing 5, the fixed frame 2 is fixedly installed on the inner wall of the discharging pipe, the top end of the long rotating rod is in sliding contact with the bottom end of the short rotating rod, the bottom end of the short rotating rod is provided with a connecting groove, and the connecting groove A magnetic block 1 is fixedly installed on the top of the inner wall, a contraction groove is provided on the top of the long rotating rod, a connecting block is inserted in the contraction groove, a magnetic block 2 is fixedly installed on the top of the connecting block, a slot is provided on the bottom end of the long rotating rod, the slot is connected to the contraction groove, a plug rod is fixedly installed on the top of the cover plate, the plug rod is inserted in the slot, a magnetic block 3 is fixedly installed on the top of the plug rod, a magnetic block 4 is fixedly installed on the bottom end of the connecting block, a spiral blade is fixedly installed on the outer wall of the long rotating rod, the cover plate is fixedly connected to the ring plate by bolts, and by arranging a fixing frame 1 and a fixing frame 2, the short rotating rod and the long rotating rod can be supported and fixed.

[0009] According to the above technical solution, the connecting block is adapted to the connecting groove and the contraction groove, the insert rod is adapted to the slot, and the connecting block, the connecting groove and the contraction groove are all square, so that the short rotating rod can drive the long rotating rod to rotate through the connecting block.

[0010] According to the above technical solution, the opposite surfaces of the magnetic block 1 and the magnetic block 2 have opposite magnetic properties, and the opposite surfaces of the magnetic block 3 and the magnetic block 4 have opposite magnetic properties.

[0011] According to the above technical solution, the magnetism between magnet block one and magnet block two is smaller than the magnetism between magnet block three and magnet block four, so that when the insertion rod is inserted into the slot, the connecting block will shrink into the shrinkage groove under the attraction between magnet block three and magnet block four, thereby detaching from the connecting groove.

[0012] According to the above technical solution, a fixing ring 1 is fixedly installed on the outer wall of the short rotating shaft, a fixing ring 2 is fixedly installed on the outer wall of the long rotating shaft, the bottom end of the fixing ring 1 is in sliding contact with the top end of the fixing plate 2, a groove is provided at the bottom end of the fixing ring 1, a laser sensor is fixedly installed on the top end of the inner wall of the groove, a positioning groove is provided at the top end of the fixing ring 2, a signal light is fixedly installed on the bottom end of the box body, and the laser sensor is connected to the signal light signal.

[0013] According to the above technical solution, a base plate is fixedly installed at the bottom end of the supporting leg, a rubber pad is fixedly installed at the bottom end of the base plate, and a feed pipe is connected to the top of the box body. By arranging the rubber pad, a certain shock-absorbing effect can be achieved on the device, thereby reducing the wear of the structure in the device caused by the vibration and reducing the noise generated by the vibration.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are: (1) The grain refining stirring device for die steel casting can make the stirring plate 2 move back and forth while performing circular motion by setting a stirring mechanism, and the folding plate 1 and the folding plate 2 can also drive the stirring plate 1 to perform circular motion, thereby greatly improving the stirring effect of the molten steel, improving the fluidity of the molten steel in the box, and making the components in the molten steel more evenly mixed, thus solving the problem in the comparative document that two driving motors are needed to achieve stirring of the molten steel at different angles, resulting in high cost and low practicality; (2) The grain refining stirring device for die steel casting is provided with a discharging mechanism, so that the short rotating rod drives the long rotating rod to rotate through the connecting block, and the long rotating rod drives the spiral blade to rotate, thereby improving the discharging efficiency of the molten steel inside the box, being convenient for personnel to use and having strong practicality; (3) The grain refining and stirring device for die steel casting can ensure that the connecting block can be accurately inserted into the connecting groove before unloading through the cooperation of the fixing ring 1, the fixing ring 2, the positioning groove, the groove, the laser sensor and the signal light, so as to ensure the normal unloading, facilitate the unloading of the auxiliary personnel, and have a simple structure and strong practicality; (4) The grain refining and stirring device for die steel casting can play a certain shock-absorbing role on the device by setting a rubber pad, reduce the wear of the structure in the device caused by vibration, reduce the noise generated by vibration, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front cross-sectional structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the side cross-sectional structure of the present invention; Figure 4 For the present invention Figure 2 A schematic diagram of the enlarged structure of the middle part A; Figure 5 For the present invention Figure 2 The enlarged structural diagram of the middle B part; Figure 6 For the present invention Figure 3 The enlarged structural diagram of the middle C part; Figure 7 This is a structural schematic diagram of a fixing ring of the present invention; Figure 8 This is a schematic diagram of the structure of the second fixing ring of the present invention; Fig. 9 It is a schematic diagram of the structure of the stirring mechanism and the discharging mechanism of the present invention.

[0016] In the figure: 1, box body; 2, support leg; 3, stirring mechanism; 4, discharging mechanism; 5, discharging pipe; 6, ring plate; 7, fixed ring 1; 8, fixed ring 2; 9, positioning groove; 10, groove; 11, laser sensor; 12, rubber pad; 13, signal light; 14, compartment; 15, feeding pipe; 16, bottom plate; 301, motor; 302, short shaft; 303, turntable; 304, reciprocating screw rod; 305, moving block; 306, folding plate 1; 307, fixed block 1; 308, fixed block 2; 309, folding plate 2; 310 , sliding rod; 311, connecting plate; 312, rod hole; 313, stirring plate one; 314, fixed plate; 315, stirring plate two; 316, support plate; 317, fixed rod; 401, toothed disc; 402, tooth frame; 403, fixed frame one; 404, fixed frame two; 405, short rotating rod; 406, connecting groove; 407, magnetic block one; 408, long rotating rod; 409, connecting block; 410, magnetic block two; 411, slot; 412, plug rod; 413, magnetic block three; 414, magnetic block four; 415, spiral blade; 416, cover plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1:

[0018] The preferred embodiment of the grain refining stirring device for die steel casting provided by the present invention is as follows: Figures 1 to 9 As shown: a grain refining stirring device for die steel casting, comprising a box body 1, a discharge pipe 5 is connected to the bottom end of the box body 1, a ring plate 6 is fixedly installed on the outer wall of the discharge pipe 5, a discharge mechanism 4 is arranged inside the discharge pipe 5, a support leg 2 is fixedly installed on the outer wall of the box body 1, a bottom plate 16 is fixedly installed on the bottom end of the support leg 2, a rubber pad 12 is fixedly installed on the bottom end of the bottom plate 16, a feed pipe 15 is connected to the top end of the box body 1, and the rubber pad 12 can play a certain shock-absorbing role on the device, reduce the wear of the structure in the device caused by vibration, and reduce the noise generated by vibration, and a stirring mechanism 3 is arranged inside the box body 1; The stirring mechanism 3 includes a motor 301, a fixing block 307, and a fixing rod 317. The motor 301 is fixedly mounted on the top of the box body 1. A short rotating shaft 302 is fixedly mounted on the output end of the motor 301. The short rotating shaft 302 passes through the top of the box body 1, and the outer wall of the short rotating shaft 302 is rotatably connected to the box body 1 through a bearing 1. A rotating disk 303 is fixedly mounted on the bottom end of the short rotating shaft 302. The bottom end of the rotating disk 303 is rotatably connected to a reciprocating screw rod 304 through a bearing 2. The outer wall of the reciprocating screw rod 304 is threaded. A moving block 305 is sleeved, a connecting plate 311 is fixedly installed on the outer wall of the moving block 305, a sliding rod 310 is fixedly installed on the bottom end of the rotating disk 303, a rod hole 312 is opened on the connecting plate 311, and the sliding rod 310 movably penetrates the connecting plate 311 through the rod hole 312. The number of the sliding rod 310 and the connecting plate 311 is two, and the sliding rod 310 is adapted to the rod hole 312. By setting the sliding rod 310, the rotating disk 303 can drive the moving block 305 to rotate through the sliding rod 310 The movable block 305 is hinged with a folding plate 1 306 on both sides, a fixed rod 317 is fixedly installed at the bottom of the inner wall of the box body 1, and a fixed block 2 308 is provided on the outer wall of the fixed rod 317 through a bearing 3 rotating sleeve, and a folding plate 2 309 is hinged on both sides of the fixed block 2 308, and the folding plate 2 309 and the folding plate 1 306 are hinged to the fixed block 1 307, and a support plate 316 is fixedly installed on the outer wall of the reciprocating screw rod 304, and the support plate 316 is fixedly installed on the inner wall of the box body 1, and the outer side of the fixed block A fixed plate 314 is fixedly installed, a stirring plate 315 is fixedly installed on the outer side of the fixed plate 314, a stirring plate 313 is fixedly installed on the outer wall of the folding plate 309 and the folding plate 1 306, a partition box 14 is fixedly installed on the top of the box body 1, and the motor 301 is arranged inside the partition box 14. The number of stirring plates 313 and stirring plates 315 is several. By setting the partition box 14, the motor 301 can be protected to a certain extent, ensuring the normal service life of the motor 301; Start the motor 301, the motor 301 drives the short rotating shaft 302 to rotate, the short rotating shaft 302 drives the rotating disk 303 to rotate, the rotating disk 303 drives the sliding rod 310 to make a circular motion, the sliding rod 310 drives the moving block 305 to rotate, the moving block 305 drives the folding plate 1 306 to make a circular motion, the folding plate 1 306 drives the folding plate 2 309 to make a circular motion through the fixed block 1 307, the moving block 305 reciprocates up and down under the action of the reciprocating screw rod 304 when rotating, the moving block 305 also drives the folding plate 1 306 to rotate, so that the folding plate 1 306 and the folding plate 2 309 fold back and forth, the folding plate 1 The first plate 306 and the second folding plate 309 drive the fixed block 1 307 to move back and forth left and right, and the fixed block 1 307 drives the second stirring plate 315 to move back and forth left and right through the fixed plate 314, so that the second stirring plate 315 moves back and forth while performing a circular motion. The folding plate 1 306 and the second folding plate 309 also drive the stirring plate 1 313 to perform a circular motion, thereby greatly improving the stirring effect on the molten steel, improving the fluidity of the molten steel in the box 1, and making the components in the molten steel more evenly mixed, which solves the problem in the comparative document that two driving motors 301 are needed to achieve stirring of the molten steel at different angles, resulting in high cost of use and low practicality. Embodiment 2:

[0019] On the basis of the first embodiment, the grain refining stirring device for die steel casting provided by the present invention is preferably implemented as follows Figures 1 to 9As shown: the discharging mechanism 4 includes a toothed disc 401, a gear rack 402, a fixing frame 1 403, a long rotating rod 408, and a cover plate 416. The toothed disc 401 is fixedly mounted at the bottom of the fixing block 2 308, the gear rack 402 is arranged above the discharging pipe 5, the toothed disc 401 is meshed with the gear rack 402, a short rotating rod 405 is fixedly mounted at the bottom of the gear rack 402, the fixing frame 1 403 is rotatably sleeved on the outer wall of the short rotating rod 405 through the bearing 4, and the fixing frame 1 403 is fixedly mounted on the inner wall of the discharging pipe 5, and the outer wall of the long rotating rod 408 is rotatably sleeved with a fixing frame 2 404 through the bearing 5 The second fixing frame 404 is fixedly mounted on the inner wall of the discharge pipe 5, the top of the long rotating rod 408 is in sliding contact with the bottom of the short rotating rod 405, the bottom of the short rotating rod 405 is provided with a connecting groove 406, and a magnetic block 407 is fixedly mounted on the top of the inner wall of the connecting groove 406, the top of the long rotating rod 408 is provided with a contraction groove, a connecting block 409 is inserted in the contraction groove, and a magnetic block 410 is fixedly mounted on the top of the connecting block 409, a slot 411 is provided at the bottom of the long rotating rod 408, and the slot 411 is connected to the contraction groove, and a plug rod 412 is fixedly mounted on the top of the cover plate 416, and the plug rod 4 12 is inserted into the slot 411, the connecting block 409 is adapted to the connecting slot 406 and the contraction slot, the plug rod 412 is adapted to the slot 411, the connecting block 409 and the connecting slot 406 and the contraction slot are all square, so that the short rotating rod 405 can drive the long rotating rod 408 to rotate through the connecting block 409, the top of the plug rod 412 is fixedly installed with a magnetic block 3 413, the bottom of the connecting block 409 is fixedly installed with a magnetic block 414, the opposite surfaces of the magnetic blocks 1 407 and 2 410 are opposite in magnetism, the opposite surfaces of the magnetic blocks 3 413 and 4 414 are opposite in magnetism, and the magnetic blocks 1 The magnetism between 407 and the second magnetic block 410 is smaller than the magnetism between the third magnetic block 413 and the fourth magnetic block 414, so that when the insertion rod 412 is inserted into the slot 411, the connecting block 409 will shrink into the shrinkage groove under the attraction between the third magnetic block 413 and the fourth magnetic block 414, thereby detaching from the connecting groove 406. The outer wall of the long rotating rod 408 is fixedly installed with a spiral blade 415, and the cover plate 416 is fixedly connected to the ring plate 6 by bolts. By setting the fixing frame 1 403 and the fixing frame 2 404, the short rotating rod 405 and the long rotating rod 408 can be supported and fixed; When it is necessary to unload the molten steel in the box body 1, the cover plate 416 can be opened, and the cover plate 416 drives the plug rod 412 to move downward, so that the plug rod 412 is disengaged from the slot 411, so that the magnetic block three 413 no longer attracts the magnetic block four 414. At this time, the magnetic block two 410 will move upward under the attraction of the magnetic block one 407, so that the connecting block 409 is inserted into the connecting groove 406, and finally the magnetic block two 410 is in contact with the magnetic block one 407. At this time, the motor 301 is continued to be started, the folding plate two 309 drives the fixed block two 308 to rotate, the fixed block two 308 drives the toothed disc 401 to rotate, the toothed disc 401 drives the gear rack 402 to rotate, the gear rack 402 drives the short rotating rod 405 to rotate, the short rotating rod 405 drives the long rotating rod 408 to rotate through the connecting block 409, and the long rotating rod 408 drives the spiral blade 415 to rotate, thereby improving the unloading efficiency of the molten steel inside the box body 1, convenient for personnel to use, and strong practicality. Embodiment three:

[0020] On the basis of the first embodiment, the grain refining stirring device for die steel casting provided by the present invention is preferably implemented as follows Figures 1 to 9 As shown: a fixing ring 1 7 is fixedly installed on the outer wall of the short rotating shaft 302, a fixing ring 2 8 is fixedly installed on the outer wall of the long rotating shaft, the bottom end of the fixing ring 1 7 is in sliding contact with the top end of the fixing plate 314, a groove 10 is clamped on the bottom end of the fixing ring 1 7, a laser sensor 11 is fixedly installed on the top end of the inner wall of the groove 10, a positioning groove 9 is provided on the top end of the fixing ring 2 8, a signal light 13 is fixedly installed on the bottom end of the box body 1, and the laser sensor 11 is connected to the signal light 13 by signal; When unloading the molten steel, the motor 301 can be started to make the short rotating rod 405 drive the fixed ring 7 to rotate, and the fixed ring 7 drives the laser sensor 11 to rotate. When the laser sensor 11 rotates to above the positioning groove 9, it will sense the positioning groove 9, and the signal light 13 will light up, indicating that the connection block 409 is relative to the connection groove 406, thereby ensuring that before unloading, the connection block 409 can be accurately inserted into the connection groove 406, ensuring the normal unloading, and facilitating the unloading of auxiliary personnel. It has a simple structure and strong practicality.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grain refining stirring device for die steel casting, comprising a housing (1), characterized in that: The outer wall of the box body (1) is fixedly provided with support legs (2), and the interior of the box body (1) is provided with a stirring mechanism (3); The stirring mechanism (3) comprises a motor (301), a fixing block (307), and a fixing rod (317). The motor (301) is fixedly mounted on the top of the housing (1). A short rotating shaft (302) is fixedly mounted on the output end of the motor (301). The short rotating shaft (302) passes through the top of the housing (1), and the outer wall of the short rotating shaft (302) is rotatably connected to the housing (1) via a bearing (1). A rotating disk (303) is fixedly mounted on the bottom end of the short rotating shaft (302). A reciprocating screw rod (304) is rotatably connected to the bottom end of the rotating disk (303) via a bearing (2). A moving block (305) is threadedly sleeved on the outer wall of the reciprocating screw rod (304). A connecting plate (311) is fixedly mounted on the outer wall of the moving block (305). A sliding rod (310) is fixedly mounted on the bottom end of the rotating disk (303). A rod hole (312) is provided on the connecting plate (311). The sliding rod (310) The connecting plate (311) is movably penetrated through the rod hole (312), and folding plates (306) are hingedly connected on both sides of the movable block (305). The fixed rod (317) is fixedly mounted on the bottom end of the inner wall of the box body (1). The outer wall of the fixed rod (317) is provided with a fixed block (308) through a bearing (3) rotating sleeve. Folding plates (309) are hingedly connected on both sides of the fixed block (308). The folding plates (309) and the folding plates (306) are both hingedly connected to the fixed block (307). A support plate (316) is fixedly mounted on the outer wall of the reciprocating screw rod (304), and the support plate (316) is fixedly mounted on the inner wall of the box body (1). A fixed plate (314) is fixedly mounted on the outer side of the fixed block. A stirring plate (315) is fixedly mounted on the outer side of the fixed plate (314). A stirring plate (313) is fixedly mounted on the outer walls of the folding plate (309) and the folding plate (306).

2. The grain refining stirring device for die steel casting according to claim 1, characterized in that: The number of the sliding rods (310) and the number of the connecting plates (311) are both two, and the sliding rods (310) are matched with the rod holes (312).

3. The grain refining stirring device for die steel casting according to claim 1, characterized in that: A partition box (14) is fixedly mounted on the top of the box body (1), the motor (301) is arranged inside the partition box (14), and the number of the stirring plate 1 (313) and the number of the stirring plate 2 (315) are both multiple.

4. The grain refining stirring device for die steel casting according to claim 1, characterized in that: The bottom end of the box body (1) is connected to a discharge pipe (5), a ring plate (6) is fixedly mounted on the outer wall of the discharge pipe (5), and a discharge mechanism (4) is arranged inside the discharge pipe (5).

5. The grain refining stirring device for die steel casting according to claim 4, characterized in that: The discharging mechanism (4) comprises a toothed disc (401), a toothed rack (402), a fixing rack 1 (403), a long rotating rod (408), and a cover plate (416); the toothed disc (401) is fixedly mounted on the bottom end of the fixing block 2 (308); the toothed rack (402) is arranged above the discharging pipe (5); the toothed disc (401) is meshed with the toothed rack (402); a short rotating rod (405) is fixedly mounted on the bottom end of the toothed rack (402); A fixing frame 1 (403) is rotatably sleeved on the outer wall of the short rotating rod (405) through a bearing 4, and the fixing frame 1 (403) is fixedly mounted on the inner wall of the discharge pipe (5). A fixing frame 2 (404) is rotatably sleeved on the outer wall of the long rotating rod (408) through a bearing 5, and the fixing frame 2 (404) is fixedly mounted on the inner wall of the discharge pipe (5). The top end of the long rotating rod (408) is in sliding contact with the bottom end of the short rotating rod (405). 05) A connecting groove (406) is provided at the bottom end, and a magnetic block one (407) is fixedly installed on the top of the inner wall of the connecting groove (406); a contraction groove is provided at the top end of the long rotating rod (408), a connecting block (409) is inserted in the contraction groove, and a magnetic block two (410) is fixedly installed on the top of the connecting block (409); a slot (411) is provided at the bottom end of the long rotating rod (408), and the slot (411) is connected to the contraction groove; a plug rod (412) is fixedly installed on the top end of the cover plate (416), and the plug rod (412) is inserted in the slot (411), and a magnetic block three (413) is fixedly installed on the top of the plug rod (412); a magnetic block four (414) is fixedly installed on the bottom end of the connecting block (409); a spiral blade (415) is fixedly installed on the outer wall of the long rotating rod (408), and the cover plate (416) is fixedly connected to the ring plate (6) by bolts.

6. The grain refining stirring device for die steel casting according to claim 5, characterized in that: The connecting block (409) is matched with the connecting groove (406) and the contraction groove, the inserting rod (412) is matched with the slot (411), and the connecting block (409), the connecting groove (406) and the contraction groove are all square.

7. The grain refining stirring device for die steel casting according to claim 5, characterized in that: The opposing surfaces of the magnetic block 1 (407) and the magnetic block 2 (410) have opposite magnetic properties, and the opposing surfaces of the magnetic block 3 (413) and the magnetic block 4 (414) have opposite magnetic properties.

8. The grain refining stirring device for die steel casting according to claim 5, characterized in that: The magnetism between the first magnetic block (407) and the second magnetic block (410) is smaller than the magnetism between the third magnetic block (413) and the fourth magnetic block (414).

9. The grain refining stirring device for die steel casting according to claim 5, characterized in that: A fixing ring 1 (7) is fixedly mounted on the outer wall of the short rotating shaft (302), and a fixing ring 2 (8) is fixedly mounted on the outer wall of the long rotating shaft. The bottom end of the fixing ring 1 (7) is in sliding contact with the top end of the fixing plate (314). A groove (10) is provided at the bottom end of the fixing ring 1 (7). A laser sensor (11) is fixedly mounted on the top end of the inner wall of the groove (10). A positioning groove (9) is provided at the top end of the fixing ring 2 (8). A signal light (13) is fixedly mounted on the bottom end of the box body (1), and the laser sensor (11) is signal-connected to the signal light (13).

10. The grain refining stirring device for die steel casting according to claim 1, characterized in that: A bottom plate (16) is fixedly mounted on the bottom end of the support leg (2), a rubber pad (12) is fixedly mounted on the bottom end of the bottom plate (16), and a feed pipe (15) is provided in communication with the top end of the box body (1).

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