Automatic sand adding equipment for ferrous metal casting
By designing screening and compaction components in an automatic sand feeding device, the problem of insufficient compaction of molding sand in the casting sand box was solved, achieving uniform screening and compaction of molding sand and improving the quality of ferrous metal casting.
Patent Information
- Application Number
- CN202511269045.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-07
- Publication Date
- 2025-12-12
AI Technical Summary
Existing sand-adding equipment cannot effectively ensure the compactness of molding sand in the casting sand box in ferrous metal casting, resulting in poor casting quality.
An automatic sand feeding device was designed, comprising a U-shaped support plate, a screening box, a first drive component, and a compaction component. By horizontally shaking the screening box and moving the compaction component up and down, uniform screening and compaction of molding sand are achieved, ensuring the compactness of the molding sand in the sand box.
It enables automatic screening and compaction of molding sand in the sand box, improves casting quality, reduces voids between molding sands, and ensures the precision and quality of ferrous metal casting.
Smart Images
Figure CN121104015A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of metal casting, and particularly relates to an automatic sand adding equipment for black metal casting. BACKGROUND
[0002] Metal casting types and molding methods are generally divided into: ordinary sand casting and special casting, sand casting refers to a casting method for producing castings in a sand mold, a casting mold is made of molding sand and core sand, and a liquid metal fills the casting mold under gravity to produce a casting.
[0003] At present, when the black metal is subjected to sand casting, a screening mechanism needs to be used to screen the molding sand to obtain molding sand gravel with a particle size meeting the requirements, and then the screened molding sand is added to the casting sand box by using a sand adding equipment, however, the existing sand adding equipment mostly directly adds sand to the casting sand box, and when the molding sand enters the casting sand box, the sand gravel is relatively loose, and the loose sand gravel will have a too large size deviation when the metal melt is poured in the later stage, so that the casting quality is affected. SUMMARY
[0004] In view of the above problems of the prior art, the technical problem to be solved by the embodiments of the present application is to provide an automatic sand adding equipment for black metal casting.
[0005] To solve the above technical problems, the present application provides the following technical scheme:
[0006] An automatic sand adding equipment for black metal casting, comprising a U-shaped support plate, a screening box body, a first driving assembly, a second driving assembly and a compaction assembly,
[0007] The screening box body is arranged on the inner side of the U-shaped support plate, and the compaction assembly is arranged below the screening box body,
[0008] The second driving assembly is arranged above the screening box body and is used for driving the screening box body to horizontally shake and driving the compaction assembly to move up and down,
[0009] When the screening box body horizontally shakes, the molding sand is screened and the screened molding sand is uniformly driven into the sand box, and when the compaction assembly moves up and down, the compaction assembly is used for compacting the molding sand entering the sand box,
[0010] The first driving assembly is installed on the top wall on the inner side of the U-shaped support plate and is used for driving the screening box body and the compaction assembly to move downward.
[0011] As a further improved scheme of the present application, the screening box body comprises a ring plate, a screen and a center bottom plate,
[0012] The center bottom plate is arranged at the inside bottom center of the ring plate, and the screen is fixedly arranged between the ring plate and the center bottom plate.
[0013] As a further improved scheme of the present application, the first driving assembly comprises a hydraulic cylinder, a support horizontal plate and a support vertical plate,
[0014] The hydraulic cylinder is fixedly mounted on the inside top wall of the U-shaped support plate, the support horizontal plate is fixedly arranged at the output end of the hydraulic cylinder, the support vertical plate is fixedly connected with the bottom of the support horizontal plate at the upper end and extends to the side of the ring plate at the lower end, and a first guide sleeve is fixedly arranged on the side of the support vertical plate facing the ring plate.
[0015] A telescopic rod is fixedly arranged on the outer wall of the ring plate, and the end of the telescopic rod away from the ring plate extends to the inside of the first guide sleeve and is in telescopic cooperation with the first guide sleeve.
[0016] As a further improved scheme of the present application, the center top plate is further arranged at the upper center of the inside of the ring plate, and the center top plate is fixedly connected with the ring plate through a plurality of fixed plates, and the plurality of fixed plates are annularly and spacedly arranged between the ring plate and the center top plate.
[0017] The second driving assembly comprises a rack, a first incomplete gear, a motor, a rotating shaft and a support plate.
[0018] The support plate is fixedly arranged at the bottom of the support horizontal plate, the motor is fixedly mounted on the side wall of the support plate, the rotating shaft is mounted at the output end of the motor, the first incomplete gear is fixedly arranged at the outside of the rotating shaft, the rack is fixedly arranged at the upper portion of the center top plate and can be engaged with the first incomplete gear, and the inside of the first guide sleeve is provided with a spring for providing elastic support for the telescopic rod.
[0019] As a further improved scheme of the present application, the compaction assembly comprises a lifting pipe, a pressing rod, a pressing plate and a circular plate.
[0020] The lifting pipe vertically penetrates the center bottom plate and the center top plate and is movably connected with the center bottom plate and the center top plate, the circular plate is fixedly arranged at the outside of the lifting pipe, the pressing rod is arranged at the bottom of the lifting pipe, and the pressing plate is fixedly mounted at the bottom of the pressing rod.
[0021] The second driving assembly further comprises an eccentric wheel, the eccentric wheel is fixedly arranged at the outside of the rotating shaft, the eccentric wheel is eccentrically arranged about the rotating shaft, and the eccentric wheel acts on the bottom of the circular plate.
[0022] As a further improvement of the present application: the air inlet pipe is internally provided with a one-way valve, the lifting pipe is internally movably provided with a piston block, and the pressure rod extends from the bottom of the lifting pipe to the inside of the lifting pipe and is fixedly connected with the piston block.
[0023] As a further improvement of the present application: the inner wall of the lifting pipe is fixedly provided with a guide strip along the length direction, the side wall of the piston block is provided with a guide groove matched with the guide strip, the eccentric wheel is fixedly provided with a second incomplete gear on one side, and the bottom of the circular plate is fixedly provided with a ring gear,
[0024] When the eccentric wheel pushes the circular plate upwards to move the circular plate and the lifting pipe upwards, the second incomplete gear meshes with the ring gear, and when the eccentric wheel pushes the circular plate to the maximum height position to move the circular plate and the lifting pipe downwards, the second incomplete gear disengages from the ring gear.
[0025] As a further improvement of the present application: the second guide sleeve is movably sleeved outside the upper end of the lifting pipe and is fixedly installed at the bottom of the support horizontal plate.
[0026] As a further improvement of the present application: a first sliding groove is formed in the center top plate, and a second sliding groove is formed in the center bottom plate,
[0027] The lifting pipe penetrates through the center top plate and the center bottom plate from the first sliding groove and the second sliding groove, a sliding block is movably arranged outside the lifting pipe, a sliding rail is fixedly arranged on the inner wall of the second sliding groove, and the sliding block is in sliding cooperation with the sliding rail.
[0028] As a further improvement of the present application: the center bottom plate and the center top plate are fixedly connected through a blocking ring plate, the blocking ring plate is used for blocking the sand, so that the sand is located above the screen.
[0029] Compared with the prior art, the present application has the following advantages:
[0030] When it is needed to add the molding sand into the sand box, the sand box is placed in the inside of the U-shaped support plate, so that the sand box is located below the screening box and the compaction assembly, then the first driving assembly drives the screening box and the compaction assembly to move downward, the compaction assembly moves into the bottom of the inside of the sand box, the screening box moves above the sand box, then the second driving assembly drives the screening box to shake horizontally and drives the compaction assembly to move up and down, when the screening box shakes horizontally, the molding sand in the screening box is screened from the bottom of the screening box and falls into the sand box evenly, so that the automatic sand adding purpose is realized, when the compaction assembly moves up and down, the molding sand in the sand box can be compacted, so that the tightness of the molding sand in the sand box is improved, and then the sand adding effect is improved, compared with the prior art, the automatic screening and sand adding operation of the sand box can be realized, and the molding sand in the sand box can be continuously compacted during the sand adding process, so that the air between the molding sands is discharged, and the casting quality of the ferrous metal is improved. BRIEF DESCRIPTION OF DRAWINGS
[0031] Figure 1 Structure diagram of an automatic sand adding equipment for ferrous metal casting Figure One
[0032] Figure 2 Structure diagram of an automatic sand adding equipment for ferrous metal casting Figure Two
[0033] Figure 3 Structure diagram of an automatic sand adding equipment for ferrous metal casting Figure Three
[0034] Figure 4 Enlarged diagram of area A in FIG. 1 Figure 1
[0035] Figure 5 Enlarged diagram of area B in FIG. 1 Figure 2
[0036] Figure 6 Enlarged diagram of area C in FIG. 1 Figure 2
[0037] Figure 7 Enlarged diagram of area D in FIG. 1 Figure 3
[0038] In the figure: 10-U-shaped support plate, 20-screening box, 201-ring plate, 202-fixing plate, 203-center top plate, 2031-first sliding groove, 204-telescopic rod, 205-screen, 206-blocking ring plate, 207-center bottom plate, 2071-second sliding groove, 2072-slideway, 30-first driving assembly, 301-hydraulic cylinder, 302-supporting horizontal plate, 303-supporting vertical plate, 304-first guide sleeve, 40-second driving assembly, 401-rack, 402-first incomplete gear, 403-motor, 404-rotating shaft, 405-eccentric wheel, 406-supporting plate, 407-second incomplete gear, 50-compacting assembly, 501-lifting pipe, 5011-guide strip, 5012-air inlet pipe, 502-pressing rod, 503-pressing plate, 504-round plate, 5041-annular rack, 505-second guide sleeve, 506-sliding block, 507-piston block, 60-sand box. DETAILED DESCRIPTION
[0039] The technical solutions of the present application will be further described in detail below in combination with specific embodiments.
[0040] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0041] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0042] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0043] Please refer to Figure 1 , Figure 2 and Figure 3The embodiment provides an automatic sand adding equipment for ferrous metal casting, which comprises a U-shaped support plate 10, a screening box 20, a first driving assembly 30, a second driving assembly 40 and a compaction assembly 50, the screening box 20 is arranged on the inner side of the U-shaped support plate 10, the compaction assembly 50 is arranged below the screening box 20, the second driving assembly 40 is arranged above the screening box 20 and is used for driving the screening box 20 to shake horizontally and driving the compaction assembly 50 to move up and down, when the screening box 20 shakes horizontally, the screening box 20 is used for screening the molding sand and driving the screened molding sand to enter the inside of a sand box 60 uniformly, when the compaction assembly 50 moves up and down, the compaction assembly 50 is used for compacting the molding sand entering the inside of the sand box 60, the first driving assembly 30 is installed on the top wall of the inner side of the U-shaped support plate 10 and is used for driving the screening box 20 and the compaction assembly 50 to move downwards.
[0044] When it is needed to add the molding sand into the inside of the sand box 60, the sand box 60 can be arranged on the inner side of the U-shaped support plate 10, so that the sand box 60 is located below the screening box 20 and the compaction assembly 50, then the first driving assembly 30 drives the screening box 20 and the compaction assembly 50 to move downwards, the compaction assembly 50 moves into the bottom of the inside of the sand box 60 when moving downwards, the screening box 20 moves above the sand box 60 when moving downwards, then the second driving assembly 40 drives the screening box 20 to shake horizontally and drives the compaction assembly 50 to move up and down, when the screening box 20 shakes horizontally, the molding sand in the screening box 20 is screened from the bottom of the screening box 20 and falls into the inside of the sand box 60 uniformly, so that the automatic sand adding purpose is achieved, when the compaction assembly 50 moves up and down, the molding sand entering the inside of the sand box 60 can be compacted, so that the compactness of the molding sand in the inside of the sand box 60 is improved, and then the sand adding effect is improved.
[0045] Please refer to Figure 1 , Figure 2 and Figure 6 In one embodiment, the screening box 20 comprises a ring plate 201, a screen 205 and a center bottom plate 207, the center bottom plate 207 is arranged at the center position of the bottom of the inner side of the ring plate 201, and the screen 205 is fixedly arranged between the ring plate 201 and the center bottom plate 207.
[0046] When the sand box 60 is arranged on the inner side of the U-shaped support plate 10, the first driving assembly 30 drives the ring plate 201, the screen 205 and the center bottom plate 207 to move above the sand box 60, then the second driving assembly 40 drives the ring plate 201, the screen 205 and the center bottom plate 207 to shake horizontally, the molding sand on the inner side of the ring plate 201 passes through the screen 205 and falls into the inside of the sand box 60 uniformly under the action of shaking, so that the automatic sand adding of the molding sand is realized.
[0047] Please refer to Figure 1 , Figure 2 ,Figure 3 And Figure 4 In one embodiment, the first driving assembly 30 comprises a hydraulic cylinder 301, a support horizontal plate 302 and a support vertical plate 303, the hydraulic cylinder 301 is fixedly installed on the inner top wall of the U-shaped support plate 10, the support horizontal plate 302 is fixedly arranged at the output end of the hydraulic cylinder 301, the upper end of the support vertical plate 303 is fixedly connected with the bottom of the support horizontal plate 302, and the lower end extends to the side of the ring plate 201, a first guide sleeve 304 is fixedly arranged on the side of the ring plate 201 facing the support vertical plate 303, an extension rod 204 is fixedly arranged on the outer wall of the ring plate 201, and the end of the extension rod 204 away from the ring plate 201 extends to the inside of the first guide sleeve 304 and is in telescopic cooperation with the first guide sleeve 304.
[0048] When the sand box 60 is placed inside the U-shaped support plate 10, the hydraulic cylinder 301 is started, the hydraulic cylinder 301 is elongated to drive the support horizontal plate 302 to move downward, when the support horizontal plate 302 moves downward, the ring plate 201, the screen 205 and the center bottom plate 207 are driven to move downward by the support vertical plate 303, the first guide sleeve 304 and the extension rod 204, so that the ring plate 201, the screen 205 and the center bottom plate 207 move to the position above the sand box 60.
[0049] Please refer to Figure 1 And Figure 7 In one embodiment, the inner side of the ring plate 201 is further provided with a center top plate 203 at the upper center position, the center top plate 203 and the ring plate 201 are fixedly connected by a plurality of fixed plates 202, the plurality of fixed plates 202 are annularly and spacedly distributed between the ring plate 201 and the center top plate 203, the second driving assembly 40 comprises a rack 401, a first incomplete gear 402, a motor 403, a rotating shaft 404 and a support plate 406, the support plate 406 is fixedly arranged at the bottom of the support horizontal plate 302, the motor 403 is fixedly installed on the side wall of the support plate 406, the rotating shaft 404 is installed at the output end of the motor 403, the first incomplete gear 402 is fixedly arranged outside the rotating shaft 404, the rack 401 is fixedly arranged on the upper part of the center top plate 203 and can be engaged with the first incomplete gear 402, and the first guide sleeve 304 is provided with a spring (not shown in the figure) for providing elastic support to the extension rod 204.
[0050] When the ring plate 201, the screen 205 and the center bottom plate 207 move down to the position above the sand box 60, the motor 403 is started, the motor 403 drives the rotating shaft 404 to rotate, the rotating shaft 404 drives the first incomplete gear 402 to rotate when rotating, when the first incomplete gear 402 meshes with the rack 401, the first incomplete gear 402 drives the rack 401 to move, and in turn drives the center top plate 203, the fixed plate 202, the ring plate 201, the screen 205 and the center bottom plate 207 to move horizontally, the ring plate 201 moves horizontally to drive the telescopic rod 204 to move to the inside of the first guide sleeve 304, and the spring is compressed under stress, when the first incomplete gear 402 disengages from the rack 401, the spring drives the telescopic rod 204 to move to the outside of the first guide sleeve 304, and in turn drives the ring plate 201, the screen 205, the center bottom plate 207, the center top plate 203 and the fixed plate 202 to move horizontally in the opposite direction, in the process of repeated meshing and disengaging of the first incomplete gear 402 and the rack 401, the ring plate 201, the screen 205 and the center bottom plate 207 move horizontally and reciprocally, and in turn the molding sand inside the ring plate 201 is uniformly screened into the inside of the sand box 60 through the screen 205.
[0051] Please refer to Figure 1 , Figure 6 and Figure 7 In one embodiment, the compaction assembly 50 comprises a lifting pipe 501, a pressing rod 502, a pressing plate 503 and a circular plate 504, the lifting pipe 501 vertically penetrates the center bottom plate 207 and the center top plate 203 and movably cooperates with the center bottom plate 207 and the center top plate 203, the circular plate 504 is fixedly arranged outside the lifting pipe 501, the pressing rod 502 is arranged at the bottom of the lifting pipe 501, the pressing plate 503 is fixedly installed at the bottom of the pressing rod 502, the second driving assembly 40 further comprises an eccentric wheel 405, the eccentric wheel 405 is fixedly arranged outside the rotating shaft 404, the eccentric wheel 405 is arranged eccentrically about the rotating shaft 404, and the eccentric wheel 405 acts on the bottom of the circular plate 504.
[0052] When the hydraulic cylinder 301 is elongated to drive the support horizontal plate 302, the support vertical plate 303, the first guide sleeve 304, the telescopic rod 204, the ring plate 201, the screen 205 and the center bottom plate 207 to move downward, the lifting pipe 501, the circular plate 504, the pressing rod 502 and the pressing plate 503 are synchronously moved downward, when the ring plate 201, the screen 205 and the center bottom plate 207 are moved to the position above the sand box 60, the pressing plate 503 extends into the sand box 60; when the motor 403 drives the first incomplete gear 402 to rotate through the rotating shaft 404, and then drives the ring plate 201, the screen 205, the center bottom plate 207, the center top plate 203 and the fixed plate 202 to swing horizontally, the rotating shaft 404 can also drive the eccentric wheel 405 to rotate, when the eccentric wheel 405 rotates, the circular plate 504 can be pushed upward to make the circular plate 504, the lifting pipe 501, the pressing rod 502 and the pressing plate 503 move upward, when the circular plate 504 moves to the maximum height position, the circular plate 504, the lifting pipe 501, the pressing rod 502 and the pressing plate 503 move downward under the action of their own force, so as to realize the upward and downward movement of the pressing plate 503 in the sand box 60, and the sand in the sand box 60 is compacted each time the pressing plate 503 moves downward.
[0053] With the sand continuously being screened into the sand box 60, the height of the sand in the sand box 60 gradually increases, and the height of the pressing plate 503 in the sand box 60 gradually increases after the sand is continuously compacted, which will cause the height between the lifting pipe 501 and the circular plate 504 to increase, causing the circular plate 504 to gradually separate from the eccentric wheel 405, so that the eccentric wheel 405 cannot smoothly push the circular plate 504 upward, thereby affecting the subsequent compacting effect of the sand, in order to avoid this phenomenon, please refer to Figure 6 In one embodiment, the lifting pipe 501 is provided with an air inlet pipe 5012 below the side wall, the air inlet pipe 5012 is provided with a one-way valve (not shown in the figure) inside, the lifting pipe 501 is movably provided with a piston block 507 inside, and the pressing rod 502 extends from the bottom of the lifting pipe 501 to the inside of the lifting pipe 501 and is fixedly connected with the piston block 507.
[0054] When the eccentric wheel 405 rotates and pushes the circular plate 504 to move upward, the air inside the lifting pipe 501 at the position below the piston block 507 is compressed, at this time, the one-way valve inside the air inlet pipe 5012 is in a closed state, and the compressed air cannot be discharged from the air inlet pipe 5012, so that the lifting pipe 501 can drive the piston block 507, the pressure rod 502 and the pressing plate 503 to move upward synchronously when the circular plate 504 and the lifting pipe 501 move to the maximum height position, the circular plate 504, the lifting pipe 501, the piston block 507, the pressure rod 502 and the pressing plate 503 move downward synchronously under the action of gravity, when the pressing plate 503 compacts the sand in the sand box 60, the pressing plate 503, the pressure rod 502 and the piston block 507 stop moving downward, at this time, the piston block 507 moves upward by a certain distance along the inside of the lifting pipe 501, when the piston block 507 moves upward, the one-way valve opens, and the external air is sucked into the area below the piston block 507 in the lifting pipe 501 from the air inlet pipe 5012, thereby realizing automatic air supplement, after that, as the sand is continuously screened into the sand box 60, the height of the sand gradually increases, the eccentric wheel 405 pushes the circular plate 504 again to move upward, the lifting pipe 501 drives the piston block 507, the pressure rod 502 and the pressing plate 503 to move upward again, when the lifting pipe 501 moves to the maximum height position, it moves downward again under the action of gravity, the piston block 507, the pressure rod 502 and the pressing plate 503 move downward again, the pressing plate 503 further compacts the sand with increased height, the pressing plate 503, the pressure rod 502 and the piston block 507 stop moving downward, at this time, the piston block 507 moves upward again by a certain distance along the inside of the lifting pipe 501, and then the external air is sucked into the area below the piston block 507 in the lifting pipe 501 from the air inlet pipe 5012, in this way, through the cooperation between the piston block 507 and the lifting pipe 501, the setting of the air inlet pipe 5012 and the one-way valve, the movable connection between the lifting pipe 501 and the pressing plate 503 can be realized, so that the pressing plate 503 can be smoothly compacted on the sand with increased height, and the lifting pipe 501 and the circular plate 504 can also be prevented from rising with the pressing plate 503, so as to ensure the continuous pushing effect of the eccentric wheel 405 on the circular plate 504.
[0055] Please refer to Figure 5 and Figure 6In one embodiment, the inner wall of the lifting pipe 501 is fixedly provided with a guide strip 5011 along the length direction, the side wall of the piston block 507 is provided with a guide groove (not shown in the figure) matched with the guide strip 5011, the eccentric wheel 405 is fixedly provided with a second incomplete gear 407 on one side, and the bottom of the circular plate 504 is fixedly provided with an annular rack 5041. When the eccentric wheel 405 pushes the circular plate 504 upwards so that the circular plate 504 and the lifting pipe 501 move upwards, the second incomplete gear 407 meshes with the annular rack 5041. When the eccentric wheel 405 pushes the circular plate 504 to the maximum height position so that the circular plate 504 and the lifting pipe 501 move downwards, the second incomplete gear 407 disengages from the annular rack 407.
[0056] When the shaft 404 drives the eccentric wheel 405 to rotate, the eccentric wheel 405 drives the second incomplete gear 407 to rotate synchronously. When the eccentric wheel 405 pushes the circular plate 504 upwards so as to drive the circular plate 504, the lifting pipe 501, the piston block 507, the pressing rod 502 and the pressing plate 503 to move upwards, the second incomplete gear 407 meshes with the annular rack 407, thereby driving the circular plate 504 and the lifting pipe 501 to rotate. When the eccentric wheel 405 pushes the circular plate 504 to the maximum height position so that the circular plate 504, the lifting pipe 501, the piston block 507, the pressing rod 502 and the pressing plate 503 move downwards, the second incomplete gear 407 disengages from the annular rack 407. At this time, the rotated pressing plate 503 can compact the molding sand at different positions inside the sand box 60.
[0057] Please refer to Figure 5 and Figure 7 In one embodiment, the upper end of the lifting pipe 501 is movably sleeved with a second guide sleeve 505, and the second guide sleeve 505 is fixedly installed at the bottom of the support horizontal plate 302.
[0058] The second guide sleeve 505 provides a guide action for the upward and downward movement and rotation of the lifting pipe 501, thereby guiding the upward and downward movement and rotation of the pressing plate 503 inside the sand box 60, so that the pressing plate 503 stably compacts the molding sand.
[0059] Please refer to Figure 6 and Figure 7In one embodiment, the center top plate 203 is provided with a first sliding groove 2031, the center bottom plate 207 is provided with a second sliding groove 2071, the lifting pipe 501 penetrates the center top plate 203 and the center bottom plate 207 from the first sliding groove 2031 and the second sliding groove 2071, a sliding block 506 is movably arranged outside the lifting pipe 501, and a sliding rail 2072 is fixedly arranged on the inner wall of the second sliding groove 2071, and the sliding block 506 is in sliding fit with the sliding rail 2072.
[0060] When the eccentric wheel 405 acts on the bottom of the circular plate 504 to drive the lifting pipe 501 to move up and down, the lifting pipe 501 moves up and down adaptively compared with the sliding block 506, when the first incomplete gear 402, the rack 401 and the spring cooperate to drive the ring plate 201, the screen 205, the center top plate 203 and the center bottom plate 207 to move horizontally, the lifting pipe 501 drives the sliding block 506 to slide adaptively along the inside of the second sliding groove 2071, and the lifting pipe 501 moves adaptively along the inside of the first sliding groove 2031.
[0061] Please refer to Figure 6 and Figure 7 In one embodiment, the center bottom plate 207 and the center top plate 203 are fixedly connected through the blocking ring plate 206, the blocking ring plate 206 is used for blocking the sand, so that the sand is located above the screen 205, and the sand is prevented from falling from the second sliding groove 2071 during screening.
[0062] In the embodiment of the application, when it is needed to add sand into the sand box 60, the sand box 60 can be placed inside the U-shaped support plate 10, so that the sand box 60 is located below the screening box body 20 and the compaction assembly 50, then the first driving assembly 30 drives the screening box body 20 and the compaction assembly 50 to move downward, the compaction assembly 50 moves into the inside bottom of the sand box 60 when moving downward, the screening box body 20 moves above the sand box 60 when moving downward, then the second driving assembly 40 drives the screening box body 20 to move horizontally and drives the compaction assembly 50 to move up and down, when the screening box body 20 moves horizontally, the sand in the screening box body 20 is screened from the bottom of the screening box body 20 and falls uniformly into the inside of the sand box 60, so that the automatic sand adding purpose is realized, when the compaction assembly 50 moves up and down, the sand entering the inside of the sand box 60 can be compacted, so that the tightness of the sand in the sand box 60 is improved, and then the sand adding effect is improved, compared with the prior art, the automatic screening and sand adding operation of the sand box 60 can be realized, and the sand entering the inside of the sand box 60 can be continuously compacted during the sand adding process, so that the air between the sand is discharged, and the casting quality of the subsequent black metal is improved.
[0063] The preferred embodiments of the present application have been described in detail, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.
Claims
1. An automatic sand feeding apparatus for casting of ferrous metals, characterized in that, The sand screening and compacting device comprises a U-shaped support plate (10), a screening box (20), a first driving assembly (30), a second driving assembly (40) and a compacting assembly (50), The screening box (20) is arranged inside the U-shaped support plate (10), and the compacting assembly (50) is arranged below the screening box (20), The second driving assembly (40) is arranged above the screening box (20) and is used for driving the screening box (20) to horizontally shake and driving the compacting assembly (50) to move up and down, When the screening box (20) shakes horizontally, the sand screening and compacting device screens the sand and drives the screened sand to uniformly enter the inside of a sand box (60), and when the compacting assembly (50) moves up and down, the sand screening and compacting device is used for compacting the sand entering the inside of the sand box (60), The first driving assembly (30) is installed on the top wall inside the U-shaped support plate (10) and is used for driving the screening box (20) and the compacting assembly (50) to move downward.
2. The automatic sand feeding apparatus for casting ferrous metals according to claim 1, wherein The screening box (20) comprises a ring plate (201), a screen (205) and a center bottom plate (207), The center bottom plate (207) is arranged at a bottom center position inside the ring plate (201), and the screen (205) is fixedly arranged between the ring plate (201) and the center bottom plate (207).
3. The automatic sand feeding apparatus for casting ferrous metals according to claim 2, characterized in that, The first driving assembly (30) comprises a hydraulic cylinder (301), a support horizontal plate (302) and a support vertical plate (303), The hydraulic cylinder (301) is fixedly installed on the top wall inside the U-shaped support plate (10), the support horizontal plate (302) is fixedly arranged at the output end of the hydraulic cylinder (301), the support vertical plate (303) is fixedly connected with the bottom of the support horizontal plate (302) at the upper end and is extended to the side of the ring plate (201) at the lower end, and a first guide sleeve (304) is fixedly arranged on the side of the ring plate (201) of the support vertical plate (303), A telescopic rod (204) is fixedly arranged on the outer wall of the ring plate (201), and the telescopic rod (204) is extended to the inside of the first guide sleeve (304) and is in telescopic cooperation with the first guide sleeve (304) at the end away from the ring plate (201).
4. The automatic sand feeding apparatus for casting ferrous metals according to claim 3, wherein A center top plate (203) is further arranged at a center position on the upper side of the ring plate (201), the center top plate (203) and the ring plate (201) are fixedly connected through a plurality of fixed plates (202), and the plurality of fixed plates (202) are annularly and spacedly arranged between the ring plate (201) and the center top plate (203), The second driving assembly (40) comprises a rack (401), a first incomplete gear (402), a motor (403), a rotating shaft (404) and a support plate (406), The support plate (406) is fixedly arranged at the bottom of the support horizontal plate (302), the motor (403) is fixedly installed on the side wall of the support plate (406), the rotating shaft (404) is installed at the output end of the motor (403), the first incomplete gear (402) is fixedly arranged outside the rotating shaft (404), the rack (401) is fixedly arranged on the upper portion of the center top plate (203) and can be engaged with the first incomplete gear (402), and the first guide sleeve (304) is internally provided with a spring for providing elastic support for the telescopic rod (204).
5. The automatic sand feeding apparatus for casting ferrous metals according to claim 4, wherein The compaction assembly (50) comprises a lifting pipe (501), a pressing rod (502), a pressing plate (503) and a circular plate (504), The lifting pipe (501) vertically penetrates the center bottom plate (207) and the center top plate (203) and movably cooperates with the center bottom plate (207) and the center top plate (203), the circular plate (504) is fixedly arranged outside the lifting pipe (501), the pressing rod (502) is arranged at the bottom of the lifting pipe (501), and the pressing plate (503) is fixedly installed at the bottom of the pressing rod (502). The second driving assembly (40) further comprises an eccentric wheel (405), the eccentric wheel (405) is fixedly arranged outside the rotating shaft (404), the eccentric wheel (405) is arranged eccentrically relative to the rotating shaft (404), and the eccentric wheel (405) acts on the bottom of the circular plate (504).
6. The automatic sand feeding apparatus for casting ferrous metals according to claim 5, wherein A gas inlet pipe (5012) is arranged below the side wall of the lifting pipe (501), the gas inlet pipe (5012) is internally provided with a one-way valve, a piston block (507) is movably arranged in the lifting pipe (501), and the upper end of the pressing rod (502) extends from the bottom of the lifting pipe (501) to the inside of the lifting pipe (501) and is fixedly connected with the piston block (507).
7. The automatic sand feeding apparatus for casting ferrous metals according to claim 6, wherein A guide strip (5011) is fixedly arranged on the inner wall of the lifting pipe (501) along the length direction, a guide groove matched with the guide strip (5011) is formed in the side wall of the piston block (507), the eccentric wheel (405) is fixedly arranged on one side of the second incomplete gear (407), and the bottom of the circular plate (504) is fixedly arranged with an annular rack (5041), When the eccentric wheel (405) pushes the circular plate (504) upward to move the circular plate (504) and the lifting pipe (501) upward, the second incomplete gear (407) is engaged with the annular rack (5041), and when the eccentric wheel (405) pushes the circular plate (504) to the maximum height position to move the circular plate (504) and the lifting pipe (501) downward, the second incomplete gear (407) is disengaged from the annular rack (407).
8. The automatic sand feeding apparatus for casting ferrous metals according to claim 5, wherein A second guide sleeve (505) is movably sleeved outside the upper end of the lifting pipe (501), and the second guide sleeve (505) is fixedly installed at the bottom of the support horizontal plate (302).
9. The automatic sand feeding apparatus for casting ferrous metals according to claim 5, wherein The center top plate (203) is provided with a first sliding groove (2031), and the center bottom plate (207) is provided with a second sliding groove (2071), The lifting pipe (501) penetrates through the center top plate (203) and the center bottom plate (207) from the first sliding groove (2031) and the second sliding groove (2071), and a sliding block (506) is movably arranged outside the lifting pipe (501), and a sliding rail (2072) is fixedly arranged on the inner wall of the second sliding groove (2071), and the sliding block (506) is in sliding fit with the sliding rail (2072).
10. The automatic sand feeding apparatus for casting ferrous metals according to claim 4, wherein The center bottom plate (207) and the center top plate (203) are fixedly connected through a blocking ring plate (206), and the blocking ring plate (206) is used for blocking the sand, so that the sand is located above the screen (205).