Metal part casting sand mold forming machine

Abstract

The invention belongs to the technical field of automobile metal part casting, and particularly relates to a metal part casting sand mold forming machine which comprises a lower mold plate, the inner side of the lower mold plate is in threaded connection with a fastening screw, the outer side of the lower mold plate is in bolted connection with a frame, and the outer side of the frame is fixedly connected with a motor. The output end of the motor is fixedly connected with a first gear, the outer side of the first gear is meshed with a first rack, the outer side of the first rack is fixedly connected with a baffle, the inner side of the baffle is rotationally connected with a rotating plate, the inner side of the rotating plate communicates with a sand inlet pipeline, and the outer side of the baffle is fixedly connected with a first spring. In other words, when the casting sand is filled, the sand inlet pipeline moves back and forth, so that the spreading range of the casting sand is wider, filling of the casting sand is more uniform, then filling of the small holes and the grooves in the model part is more sufficient, tamping is conducted after filling, and production of the casting sand mold is more stable.

Description

Technical Field

[0001] The invention relates to the technical field of automobile metal parts casting, in particular to a metal parts casting sand mold forming machine. Background Art

[0002] Casting involves pouring molten metal into a pre-prepared mold, cooling and solidifying it to create a metal component with the desired shape and properties. In automotive manufacturing, this process is widely used to produce complex metal components such as engine blocks, cylinder heads, transmission housings, and wheel hubs.

[0003] A Chinese patent application with the patent number CN119566233B discloses a sand mold forming device and method for casting automotive parts. It proposes that during the batch molding and overall demolding process, the existing extrusion and compaction equipment is difficult to fully fill the small holes and grooves on the parts. After demolding, the sand molds at the small holes and grooves are very likely to collapse or be insufficiently filled, resulting in a high defect rate. Therefore, to address the above problems, a sand mold forming machine for casting metal parts is proposed. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a metal part casting sand mold forming machine described in the present invention comprises a lower template, the inner side of the lower template is threadedly connected to a fastening screw, the outer side of the lower template is bolted to a frame, the outer side of the frame is fixedly connected to a motor, the output end of the motor is fixedly connected to a first gear, the outer side of the first gear is meshed with a first rack, the outer side of the first rack is fixedly connected to a baffle, the inner side of the baffle is rotatably connected to a rotating plate, the inner side of the rotating plate is connected to a sand feeding pipe, the outer side of the baffle is fixedly connected to a first spring, one end of the first spring is fixedly connected to a lifting rod, one end of the lifting rod is fixedly connected to a tamping plate, the lifting rod and the baffle are slidably connected, the inner side of the frame is fixedly connected to a second rack, the outer side of the rotating plate is fixedly connected to teeth, and the second rack is meshed with the teeth; Before using the embodiment of the present invention, ensure that the diameter of the rotating plate is the same as the inner width of the frame, and the sand inlet pipe is located at the edge of the rotating plate, and ensure that the space of the model part to be formed is smaller than the diameter of the tamping plate. When using the embodiment of the present invention, place the model part on the upper side of the lower template and screw it into the model part by fastening screws to fix the model part. Then, connect the lower template to the frame by bolts so that the model part enters the inner side of the frame, and inject casting sand into the inner side of the frame through the sand inlet pipe. Then, the first gear is driven to rotate by the motor, and the first rack is driven to move by the first gear, and the baffle is driven to move back and forth by the first rack. , the baffle drives the sand inlet pipe to move back and forth to spread the foundry sand. At the same time, when the baffle moves back and forth, it drives the teeth to move. Through the engagement of the teeth and the second rack, the teeth rotate while moving, thereby driving the rotating plate and the sand inlet pipe to rotate, so that the spreading range of the sand inlet pipe is further expanded, so that the foundry sand fills the space between the model part and the lower template, the frame and the baffle. After filling, the user pulls the lifting rod up and down, so that the lifting rod drives the tamping plate to move to squeeze and tamp the foundry sand. Finally, the lower template is removed so that the foundry sand mold fallen on its upper side can be removed; That is, when filling the foundry sand, the sand inlet pipe moves back and forth, so that the spreading range of the foundry sand is wider, the filling of the foundry sand is more uniform, and the small holes and grooves on the model parts are filled more fully, and the sand is compacted after filling, so that the production of the foundry sand mold is more stable.

[0006] Preferably, the outer side of the baffle is fixedly connected to a guide rail frame, the inner side of the guide rail frame is slidably connected to a first slide bar, and the first slide bar is fixedly connected to the lifting rod; Before using the embodiment of the present invention, ensure that the space inside the guide rail frame is the same as the diameter of the first slide bar. When the embodiment of the present invention is used, when the rotating plate rotates, it drives the first spring to rotate, and the lifting rod is driven to rotate by the first spring, and the first slide bar is driven to rotate by the lifting rod, so that when the first slide bar moves, it is restricted and guided by the guide rail frame. When the first slide bar moves to the recessed position of the guide rail frame, it moves downward, and the lifting rod and the tamping plate are driven downward by the first slide bar. When the first slide bar moves out of the recessed position, the first slide bar moves up, thereby driving the tamping plate to move up, so as to realize a back and forth cycle. That is, when the baffle moves, the tamping plate can move up and down reciprocatingly, so that when the foundry sand is about to be filled, the tamping plate can automatically squeeze and tamp the foundry sand without the user having to perform additional operations, thereby improving the convenience of using the device.

[0007] Preferably, a lifting plate is fixedly connected to the outer side of the frame, the outer side of the lifting plate is slidably connected to the limit frame, the outer side of the limit frame is fixedly connected to the base, one end of the lifting plate is fixedly connected to the second sliding rod, the second sliding rod is slidably connected to the base, the outer side of the base is fixedly connected to a cylinder, the output end of the cylinder is fixedly connected to a movable guide rail, the movable guide rail is slidably connected to the second sliding rod; Before using the embodiment of the present invention, ensure that the space inside the movable guide rail is the same as the diameter of the second slide bar, and that the two side planes of the lifting plate are in close contact with the inner wall of the limit frame. When the embodiment of the present invention is used, when the casting sand is about to be filled, the injection of casting sand can be stopped first, and the movable guide rail is driven to move back and forth by the cylinder. The movement of the movable guide rail and the sliding connection with the second slide bar cause the second slide bar to move up and down, thereby driving the lifting plate, the frame, other components connected to the inner side of the frame, and the casting sand to shake up and down through the second slide bar. That is, when the foundry sand is about to be filled, the device can be used to drive it to shake up and down to reduce the gap inside it, making the filling more compact and allowing the foundry sand to be dispersed more evenly through shaking, further improving the molding stability of the device.

[0008] Preferably, the outer side of the base is fixedly connected to a limiting block, the inner side of the limiting block is slidably connected to a limiting rod, and the limiting rod is fixedly connected to the movable guide rail; When the embodiment of the present invention is used, when the movable guide rail moves back and forth, the movable trajectory of the limit rod is limited by the limit block, and the limit rod is fixedly connected to the movable guide rail, so that the limit rod can further limit the end of the movable guide rail away from the cylinder; That is, when the movable guide rail moves, it is further limited by the limiting rod, making the movement of the movable guide rail more stable, thereby reducing the vibration caused by the second slide bar moving up and down and contacting the movable guide rail to produce collision, thereby improving the stability of the device.

[0009] Preferably, a lifting block is fixedly connected to the outside of the frame, one end of the lifting block is fixedly connected to a piston, the outside of the piston is slidably connected to a storage cylinder, the inside of the storage cylinder is connected to a delivery hose, one end of the delivery hose is connected to a hollow pad, and the hollow pad is fixedly connected to the frame; Before using the embodiment of the present invention, ensure that the hollow pad is made of a wear-resistant material. Before use, inject a suitable volume of liquid into the storage tube and the inside of the hollow pad. When using the embodiment of the present invention, after the casting sand is poured into the inside of the frame, when the frame moves downward, it will drive the lifting block to move downward, and the lifting block drives the piston to move downward. The piston pushes the liquid inside the storage tube into the delivery hose, and the delivery hose drives the liquid into the inside of the hollow pad, causing the hollow pad to expand. When the casting sand accumulates to a certain volume, the expansion of the hollow pad squeezes the casting sand. That is: after the foundry sand accumulates to a certain volume, the frame moves up and down, causing the piston to repeatedly pull the liquid into and out of the hollow pad, causing the hollow pad to repeatedly switch between flattening and expanding, thereby continuously squeezing the foundry sand, making it easier to further squeeze and compact the foundry sand, making the molding of the foundry sand more stable, and improving the stability of the device.

[0010] Preferably, an inclined groove is provided on the inner side of the base, a collection box is fixedly connected to the outer side of the base, a movable plate is rotatably connected to the inner side of the collection box, and a valve is connected to the inner side of the collection box; Before using the embodiment of the present invention, ensure that the distance between the two ends of the movable plate is the same as the opening of the collection box when the movable plate rotates, and the movable plate is made of a lighter material. When using the embodiment of the present invention, after compacting the foundry sand, the lower template can be removed so that the lower template drives the model part on its upper side and the foundry sand on the outer side to move to separate from the frame, so as to take out the formed foundry sand mold. When the foundry sand mold is taken out, the foundry sand on the outer surface falls off, and the foundry sand is guided by the inclined surface of the inclined groove so that it falls on one end of the movable plate, resulting in that end of the movable plate being heavier, thereby causing the movable plate to rotate, causing the foundry sand to fall into the inner side of the collection box and be blocked by the movable plate; That is, when the lower template drives the casting sand mold to be taken out, the falling casting sand is guided by the inclined chute, so that the casting sand can easily fall into the inside of the collection box for collection, and the casting sand is blocked by the movable plate, so that it is not easy to fall out of the collection box, so that it can be recycled and processed later, thereby improving the convenience of using the device.

[0011] Preferably, a T-shaped bar is fixedly connected to the outer side of the first rack, and a connecting block is rotatably connected to one side of the first gear, and the T-shaped bar and the connecting block are slidably connected; When the embodiment of the present invention is used, the connecting block clamps the T-shaped bar that moves close to the first gear, thereby further restricting the position of the first rack through the T-shaped bar, making the meshing of the first rack and the first gear more stable; That is, when the first gear and the first rack are engaged, the connection between the barrel connecting block and the T-bar further limits the meshing position of the first rack and the first gear, making the meshing of the two more stable and improving the stability of the device.

[0012] Preferably, an air cushion is fixedly connected to the inner side of the tamping plate, ventilation grooves are provided on the surface of the lifting rod and the surface of the tamping plate, and an air pipe is rotatably connected to the outer side of the lifting rod; Before using the embodiment of the present invention, ensure that the air pipe is connected to a device such as an air pump that can extract and discharge air, and that the air pipe is of a certain length so that the air pipe does not restrict the movement of the baffle. An opening is provided on the upper surface of the air cushion to facilitate hollow access to the inner side of the air cushion through the ventilation groove. When the embodiment of the present invention is used, while the tamping plate moves up and down, the air pipe can be connected to a device that can extract and discharge air, so that air can be injected into the ventilation groove through the air pipe, and then injected into the inner side of the air cushion through the ventilation groove, causing the air cushion to expand and squeeze the casting sand. That is, after the compacting plate moves down to squeeze and compact the foundry sand, the air cushion can expand to further squeeze and compact the foundry sand on the upper side, thereby further improving the molding stability of the device.

[0013] Preferably, a slot is provided on the surface of the lifting plate on one side, an insertion rod is slidably connected to the inner side of the base, one end of the insertion rod is fixedly connected to a second spring, and one end of the second spring is fixedly connected to the base; Before using the embodiment of the present invention, ensure that the length of the insertion rod can ensure that it can be inserted into the inner side of the slot after passing through the base, and one end of the insertion rod is inclined. When the embodiment of the present invention is used, when the device is not in use, the movable guide rail can be moved to the extreme position, so that the movable guide rail can squeeze the second slide bar to rise to the maximum height, so that the lifting plate is raised to the maximum height, and then the slot is moved to align with the insertion rod, so that the insertion rod is inserted into the inner side of the slot under the pull of the second spring, thereby fixing the position of the lifting plate and the frame; That is, when the device is not in use, the rod is inserted into the inner side of the slot to restrict and fix the position of the lifting plate and the frame, thereby reducing the pressure on the movable guide rail and facilitating the restriction and fixation of the frame position, thereby improving the stability of the device.

[0014] Preferably, an extension rod is fixedly connected to the outer side of the frame, an extension plate is fixedly connected to the outer side of the lower template, and the extension rod and the extension plate are slidably connected; Before using the embodiment of the present invention, ensure that the extension rod is a square rod and that a square groove is formed on the surface of the extension plate so that the extension rod can pass through the extension plate. When using the embodiment of the present invention, after the mold part is installed on the upper side of the lower template, the extension plate of the lower template is aligned with the extension rod and the lower template is raised so that the extension plate is sleeved on the outside of the extension rod. The extension rod is used to limit the lifting trajectory of the extension plate. When the extension plate is raised to the maximum height, one side of the frame is pressed against the upper side of the extension plate, thereby limiting the maximum height of the extension plate. Then, the bolts are screwed into the frame and the inner side of the lower template. That is, when the lower template is sent into the inner side of the frame, the extension plate is restricted by the extension rod, so that the extension plate can stably drive the lower template to move to the lower opening of the frame, and when the extension plate moves to be close to the frame, it is less likely that the lower template will deviate during movement, making it difficult to align with the frame, thereby improving the stability of the device alignment.

[0015] The present invention is beneficial in that: 1. A metal part casting sand mold forming machine described in the present invention, before the specific use of the embodiment of the present invention, ensure that the diameter of the rotating plate is the same as the inner width of the frame, and the sand inlet pipe is located at the edge of the rotating plate, and ensure that the space of the model part to be formed is smaller than the diameter of the ramming plate. When the embodiment of the present invention is used, the model part is placed on the upper side of the lower template and screwed into the model part by fastening screws to fix the model part, and then the lower template is connected to the frame by bolts so that the model part enters the inside of the frame, and casting sand is injected into the inside of the frame through the sand inlet pipe, and then the first gear is driven to rotate by the motor, and the first rack is driven to move by the first gear, and the baffle is driven to move back and forth by the first rack, and the sand inlet pipe is driven back and forth by the baffle to spread the casting sand. At the same time, when the baffle moves back and forth, it will drive The teeth move, and the engagement of the teeth and the second rack causes the teeth to rotate while moving, thereby driving the rotating plate and the sand inlet pipe to rotate, so that the spreading range of the sand inlet pipe is further expanded, so that the foundry sand fills the space between the model part and the lower template, the frame and the baffle. After filling, the user pulls the lifting rod up and down, so that the lifting rod drives the tamping plate to move to squeeze and tamp the foundry sand, and finally, the lower template is taken out, so that the foundry sand mold fallen on its upper side can be taken out; that is: when filling the foundry sand, the sand inlet pipe moves back and forth, so that the spreading range of the foundry sand is wider, the filling of the foundry sand is more uniform, and the small holes and grooves on the model part are filled more fully, and are tamped after filling, so that the production of the foundry sand mold is more stable.

[0016] 2. A metal part casting sand mold forming machine described in the present invention, before the specific use of the embodiment of the present invention, ensure that the space inside the guide rail frame is the same as the diameter of the first slide bar. When the embodiment of the present invention is used, when the rotating plate rotates, it will drive the first spring to rotate, and the lifting rod is driven to rotate by the first spring, and the first slide bar is driven to rotate by the lifting rod, so that when the first slide bar moves, it is restricted and guided by the guide rail frame, so that when the first slide bar moves to the recess of the guide rail frame, it will move downward, and the lifting rod and the tamping plate are driven downward by the first slide bar, and when the first slide bar moves out of the recess, the first slide bar moves up, thereby driving the tamping plate to move up to realize a back and forth cycle; that is: when the baffle moves, the tamping plate can move up and down reciprocatingly, so that when the casting sand is about to be filled, the tamping plate can automatically squeeze and tamp the casting sand without the need for the user to perform additional operations, thereby improving the convenience of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a structural front view of the present invention; Figure 2 It is a rear view of the structure in the present invention; Figure 3 Schematic diagram of the structure of the frame in the present invention; Figure 4 This is a schematic diagram of another viewing angle structure of the frame in the present invention; Figure 5 Schematic diagram of the structure of the motor in the present invention; Figure 6 Schematic diagram of the structure of the baffle in the present invention; Figure 7 Schematic diagram of the structure of the tamping plate in the present invention; Figure 8 Schematic diagram of the structure of the base in the present invention; Figure 9 It is a structural schematic diagram of the collection box in the present invention.

[0019] Figure: 1, lower template; 2, fastening screws; 3, frame; 4, motor; 5, first gear; 6, first rack; 601, T-bar; 7, baffle; 8, rotating plate; 9, sand inlet pipe; 10, first spring; 11, lifting rod; 12, tamping plate; 13, second rack; 14, teeth; 15, guide frame; 16, first slide bar; 17, lifting plate; 18, limit frame; 19, base; 20, second slide bar; 21 , cylinder; 22, movable guide rail; 23, limit block; 24, limit rod; 25, lifting block; 26, piston; 27, storage cylinder; 28, delivery hose; 29, hollow pad; 30, inclined chute; 31, collecting box; 32, movable plate; 33, valve; 34, connecting block; 35, air cushion; 36, ventilation groove; 37, air pipe; 38, slot; 39, plug rod; 40, second spring; 41, extension rod; 42, extension plate. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0021] Specific examples are given below.

[0022] See also Figures 1 to 9 As shown, a metal part casting sand mold forming machine described in an embodiment of the present invention includes a lower template 1, the inner side of the lower template 1 is threadedly connected to a fastening screw 2, the outer side of the lower template 1 is bolted to a frame 3, the outer side of the frame 3 is fixedly connected to a motor 4, the output end of the motor 4 is fixedly connected to a first gear 5, the outer side of the first gear 5 is meshed with a first rack 6, the outer side of the first rack 6 is fixedly connected to a baffle 7, the inner side of the baffle 7 is rotatably connected to a rotating plate 8, the inner side of the rotating plate 8 is connected to a sand inlet pipe 9, the outer side of the baffle 7 is fixedly connected to a first spring 10, one end of the first spring 10 is fixedly connected to a lifting rod 11, one end of the lifting rod 11 is fixedly connected to a tamping plate 12, the lifting rod 11 and the baffle 7 are slidably connected, the inner side of the frame 3 is fixedly connected to a second rack 13, the outer side of the rotating plate 8 is fixedly connected to teeth 14, and the second rack 13 is meshed with the teeth 14; Before using the embodiment of the present invention, ensure that the diameter of the rotating plate 8 is the same as the inner width of the frame 3, and the sand inlet pipe 9 is located at the edge of the rotating plate 8, and ensure that the space of the model part to be formed is smaller than the diameter of the tamping plate 12. When using the embodiment of the present invention, place the model part on the upper side of the lower template 1 and screw it into the model part by fastening screws 2 to fix the model part. Then, connect the lower template 1 to the frame 3 by bolts so that the model part enters the inner side of the frame 3, and inject casting sand into the inner side of the frame 3 through the sand inlet pipe 9. Then, the first gear 5 is driven to rotate by the motor 4, and the first rack 6 is driven to move by the first gear 5, and the baffle 7 is driven to move back and forth by the first rack 6. The baffle 7 drives the sand inlet pipe 9 to move back and forth to spread the foundry sand. At the same time, when the baffle 7 moves back and forth, it drives the teeth 14 to move. Through the engagement of the teeth 14 with the second rack 13, the teeth 14 rotate while moving, thereby driving the rotating plate 8 and the sand inlet pipe 9 to rotate, so that the spreading range of the sand inlet pipe 9 is further expanded, so that the foundry sand fills the space between the model part and the lower template 1, the frame 3 and the baffle 7. After filling, the user pulls the lifting rod 11 up and down, so that the lifting rod 11 drives the tamping plate 12 to move to squeeze and tamp the foundry sand. Finally, by removing the lower template 1, the foundry sand mold that falls on its upper side can be removed. That is, when filling the foundry sand, the sand inlet pipe 9 moves back and forth, so that the spreading range of the foundry sand is wider, the filling of the foundry sand is more uniform, and the small holes and grooves on the model are filled more fully, and the sand is compacted after filling, so that the production of the foundry sand mold is more stable.

[0023] See also Figure 1 and Figure 6 As shown, the outer side of the baffle 7 is fixedly connected to a guide rail frame 15, the inner side of the guide rail frame 15 is slidably connected to a first slide bar 16, and the first slide bar 16 is fixedly connected to the lifting rod 11; Before using the embodiment of the present invention, ensure that the space inside the guide rail frame 15 is the same as the diameter of the first slide bar 16. When the embodiment of the present invention is used, when the rotating plate 8 rotates, it drives the first spring 10 to rotate, and the lifting rod 11 is driven to rotate by the first spring 10, and the first slide bar 16 is driven to rotate by the lifting rod 11, so that when the first slide bar 16 moves, it is restricted and guided by the guide rail frame 15, so that when the first slide bar 16 moves to the recessed position of the guide rail frame 15, it moves downward, and the lifting rod 11 and the tamping plate 12 are driven downward by the first slide bar 16, and when the first slide bar 16 moves out of the recessed position, the first slide bar 16 moves up, thereby driving the tamping plate 12 to move up, so as to realize a back and forth cycle; That is, when the baffle 7 moves, the tamping plate 12 can move up and down reciprocatingly, so that when the foundry sand is about to be filled, the tamping plate 12 can automatically squeeze and tamp the foundry sand without the user having to perform additional operations, thereby improving the convenience of using the device.

[0024] See also Figure 2 and Figure 4 As shown, a lifting plate 17 is fixedly connected to the outer side of the frame 3, and a limit frame 18 is slidably connected to the outer side of the lifting plate 17. A base 19 is fixedly connected to the outer side of the limit frame 18. One end of the lifting plate 17 is fixedly connected to a second slide bar 20, and the second slide bar 20 is slidably connected to the base 19. A cylinder 21 is fixedly connected to the outer side of the base 19, and a movable guide rail 22 is fixedly connected to the output end of the cylinder 21. The movable guide rail 22 is slidably connected to the second slide bar 20. Before using the embodiment of the present invention, ensure that the space inside the movable guide rail 22 is the same as the diameter of the second slide bar 20, and that the two side planes of the lifting plate 17 are in close contact with the inner wall of the limit frame 18. When the embodiment of the present invention is used, when the casting sand is about to be filled, the injection of casting sand can be stopped first, and the movable guide rail 22 can be driven back and forth by the cylinder 21. The movement of the movable guide rail 22 and the sliding connection with the second slide bar 20 make the second slide bar 20 move up and down, thereby driving the lifting plate 17, the frame 3, other components connected to the inner side of the frame 3, and the casting sand to shake up and down through the second slide bar 20; That is, when the foundry sand is about to be filled, the device can be used to drive it to shake up and down to reduce the gap inside it, making the filling more compact and allowing the foundry sand to be dispersed more evenly through shaking, further improving the molding stability of the device.

[0025] See also Figure 2 and Figure 4 As shown, the outer side of the base 19 is fixedly connected to a limit block 23, the inner side of the limit block 23 is slidably connected to a limit rod 24, and the limit rod 24 is fixedly connected to the movable guide rail 22; When the embodiment of the present invention is used, when the movable guide rail 22 moves back and forth, the movable trajectory of the limiting rod 24 is limited by the limiting block 23, and the limiting rod 24 is fixedly connected to the movable guide rail 22, so that the limiting rod 24 can further limit the end of the movable guide rail 22 away from the cylinder 21; That is, when the movable guide rail 22 moves, it is further limited by the limiting rod 24, making the movement of the movable guide rail 22 more stable, thereby reducing the vibration caused by the second slide bar 20 moving up and down and contacting the movable guide rail 22 to produce collision, thereby improving the stability of the device.

[0026] See also Figure 2 and Figure 3As shown, a lifting block 25 is fixedly connected to the outside of the frame 3, one end of the lifting block 25 is fixedly connected to a piston 26, a storage cylinder 27 is slidably connected to the outside of the piston 26, the inside of the storage cylinder 27 is connected to a delivery hose 28, one end of the delivery hose 28 is connected to a hollow pad 29, and the hollow pad 29 is fixedly connected to the frame 3; Before using the embodiment of the present invention, ensure that the hollow pad 29 is made of a wear-resistant material. Before use, inject a suitable volume of liquid into the storage tube 27 and the inside of the hollow pad 29. When using the embodiment of the present invention, after the casting sand is poured into the inside of the frame 3 and the frame 3 moves downward, it will drive the lifting block 25 to move downward, and the lifting block 25 drives the piston 26 to move downward. The piston 26 pushes the liquid inside the storage tube 27 into the delivery hose 28, and the delivery hose 28 drives the liquid into the inside of the hollow pad 29, causing the hollow pad 29 to expand. When the casting sand accumulates to a certain volume, the expansion of the hollow pad 29 squeezes the casting sand; That is, after the foundry sand accumulates to a certain volume, the frame 3 moves up and down, causing the piston 26 to repeatedly pull the liquid into and out of the hollow pad 29, so that the hollow pad 29 repeatedly switches between flattening and expanding, thereby continuously squeezing the foundry sand, making it easier to further squeeze and compact the foundry sand, making the molding of the foundry sand more stable, and improving the stability of the device.

[0027] See also Figure 1 and Figure 9 As shown, an inclined slot 30 is provided on the inner side of the base 19, a collecting box 31 is fixedly connected to the outer side of the base 19, a movable plate 32 is rotatably connected to the inner side of the collecting box 31, and a valve 33 is connected to the inner side of the collecting box 31; Before using the embodiment of the present invention, ensure that when the movable plate 32 rotates, the distance between its two ends is the same as the opening of the collection box 31, and the movable plate 32 is made of a lighter material. When using the embodiment of the present invention, after compacting the foundry sand, the lower template 1 can be removed so that the lower template 1 drives the model part on its upper side and the foundry sand on the outer side to move to separate from the frame 3, so as to take out the formed foundry sand mold. When the foundry sand mold is taken out, the foundry sand on the outer surface falls off. The foundry sand is guided by the inclined surface of the chute 30 so that it falls on one end of the movable plate 32, resulting in that one end of the movable plate 32 is heavier, thereby causing the movable plate 32 to rotate, causing the foundry sand to fall into the inner side of the collection box 31 and be blocked by the movable plate 32. That is, when the lower template 1 drives the casting sand mold to be taken out, the falling casting sand is guided by the inclined groove 30, so that the casting sand can easily fall into the inner side of the collection box 31 for collection, and the casting sand is blocked by the movable plate 32, so that it is not easy to fall out of the collection box 31, so as to facilitate its subsequent recycling and processing, thereby improving the convenience of using the device.

[0028] See also Figure 2 As shown, a T-shaped bar 601 is fixedly connected to the outer side of the first rack 6, and the first gear 5 is rotatably connected to the connecting block 34, and the T-shaped bar 601 and the connecting block 34 are slidably connected; When the embodiment of the present invention is used, the connecting block 34 clamps the T-shaped bar 601 that moves close to the first gear 5, thereby further restricting the position of the first rack 6 through the T-shaped bar 601, making the engagement between the first rack 6 and the first gear 5 more stable; That is, when the first gear 5 and the first rack 6 are engaged, the connection between the barrel connecting block 34 and the T-bar 601 further limits the meshing position of the first rack 6 and the first gear 5, making the meshing more stable and improving the stability of the device.

[0029] See also Figure 7 As shown, an air cushion 35 is fixedly connected to the inner side of the tamping plate 12, ventilation grooves 36 are provided on the surface of the lifting rod 11 and the surface of the tamping plate 12, and an air pipe 37 is rotatably connected to the outer side of the lifting rod 11; Before using the embodiment of the present invention, ensure that the air pipe 37 is connected to a device such as an air pump that can extract and discharge air, and that the air pipe 37 is of a certain length so that the air pipe 37 does not restrict the movement of the baffle 7. An opening is provided on the upper surface of the air cushion 35 to facilitate hollow access to the inside of the air cushion 35 through the vent groove 36. When using the embodiment of the present invention, while the tamping plate 12 moves up and down, the air pipe 37 can be connected to a device that can extract and discharge air, thereby facilitating the injection of air into the vent groove 36 through the air pipe 37 and into the inside of the air cushion 35 through the vent groove 36, causing the air cushion 35 to expand and squeeze the foundry sand. That is, after the tamping plate 12 moves down to squeeze and compact the foundry sand, the air cushion 35 can expand to further squeeze and compact the foundry sand on the upper side, further improving the molding stability of the device.

[0030] See also Figure 3 and Figure 8 As shown, a slot 38 is provided on the surface of the lifting plate 17 on one side, and an insertion rod 39 is slidably connected to the inner side of the base 19. One end of the insertion rod 39 is fixedly connected to a second spring 40, and one end of the second spring 40 is fixedly connected to the base 19; Before using the embodiment of the present invention, ensure that the length of the insertion rod 39 can ensure that it can pass through the base 19 and be inserted into the inner side of the slot 38, and that one end of the insertion rod 39 is an inclined surface. When the embodiment of the present invention is used, when the device is not in use, the movable guide rail 22 can be moved to the extreme position, so that the movable guide rail 22 can squeeze the second slide bar 20 to rise to the maximum height, so that the lifting plate 17 is raised to the maximum height, and then the slot 38 is moved to align with the insertion rod 39, so that the insertion rod 39 is pulled by the second spring 40 and inserted into the inner side of the slot 38, thereby fixing the position of the lifting plate 17 and the frame 3; That is, when the device is not in use, the insertion rod 39 is inserted into the inner side of the slot 38 to restrict and fix the position of the lifting plate 17 and the frame 3, thereby reducing the pressure on the movable guide rail 22 and facilitating the restriction and fixation of the position of the frame 3, thereby improving the stability of the device.

[0031] See also Figure 3 As shown, an extension rod 41 is fixedly connected to the outer side of the frame 3, and an extension plate 42 is fixedly connected to the outer side of the lower template 1. The extension rod 41 and the extension plate 42 are slidably connected; Before using the embodiment of the present invention, ensure that the extension rod 41 is a square rod and that a square groove is formed on the surface of the extension plate 42 so that the extension rod 41 can pass through the extension plate 42. When using the embodiment of the present invention, after the mold part is installed on the upper side of the lower template 1, the extension plate 42 of the lower template 1 is aligned with the extension rod 41, and the lower template 1 is raised so that the extension plate 42 is sleeved on the outside of the extension rod 41. The extension rod 41 limits the lifting trajectory of the extension plate 42. When the extension plate 42 is raised to the maximum height, one side of the frame 3 is pressed against the upper side of the extension plate 42, thereby limiting the maximum height of the extension plate 42. Then, the bolts are screwed into the frame 3 and the inner side of the lower template 1. That is, when the lower template 1 is sent into the inner side of the frame 3, the extension plate 42 is restricted by the extension rod 41, so that the extension plate 42 can stably drive the lower template 1 to move to the lower opening of the frame 3, and when the extension plate 42 moves to be close to the frame 3, it is not easy for the lower template 1 to deviate during movement, making it difficult to align with the frame 3, thereby improving the stability of the device alignment.

[0032] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A sand mold forming machine for casting metal parts, comprising a lower mold plate (1), characterized in that: The inner side of the lower template (1) is threadedly connected to a fastening screw (2), the outer side of the lower template (1) is bolted to a frame (3), the outer side of the frame (3) is fixedly connected to a motor (4), the output end of the motor (4) is fixedly connected to a first gear (5), the outer side of the first gear (5) is meshed with a first rack (6), the outer side of the first rack (6) is fixedly connected to a baffle (7), the inner side of the baffle (7) is rotatably connected to a rotating plate (8), the inner side of the rotating plate (8) is connected to a sand feeding pipe (9), the outer side of the baffle (7) is fixedly connected to a first spring (10), one end of the first spring (10) is fixedly connected to a lifting rod (11), one end of the lifting rod (11) is fixedly connected to a tamping plate (12), the lifting rod (11) and the baffle (7) are slidably connected, the inner side of the frame (3) is fixedly connected to a second rack (13), the outer side of the rotating plate (8) is fixedly connected to teeth (14), and the second rack (13) is meshed with the teeth (14).

2. A metal component casting sand mold forming machine according to claim 1, characterized in that: The outer side of the baffle (7) is fixedly connected to a guide rail frame (15), the inner side of the guide rail frame (15) is slidably connected to a first slide bar (16), and the first slide bar (16) is fixedly connected to the lifting rod (11).

3. A metal component casting sand mold forming machine according to claim 2, characterized in that: The outer side of the frame (3) is fixedly connected to a lifting plate (17), the outer side of the lifting plate (17) is slidably connected to a limit frame (18), the outer side of the limit frame (18) is fixedly connected to a base (19), one end of the lifting plate (17) is fixedly connected to a second slide bar (20), the second slide bar (20) and the base (19) are slidably connected, the outer side of the base (19) is fixedly connected to a cylinder (21), the output end of the cylinder (21) is fixedly connected to a movable guide rail (22), and the movable guide rail (22) and the second slide bar (20) are slidably connected.

4. A metal component casting sand mold forming machine according to claim 3, characterized in that: The outer side of the base (19) is fixedly connected to a limiting block (23), the inner side of the limiting block (23) is slidably connected to a limiting rod (24), and the limiting rod (24) is fixedly connected to the movable guide rail (22).

5. A metal component casting sand mold forming machine according to claim 4, characterized in that: The outer side of the frame (3) is fixedly connected to a lifting block (25), one end of the lifting block (25) is fixedly connected to a piston (26), the outer side of the piston (26) is slidably connected to a storage cylinder (27), the inner side of the storage cylinder (27) is connected to a delivery hose (28), one end of the delivery hose (28) is connected to a hollow pad (29), and the hollow pad (29) is fixedly connected to the frame (3).

6. A metal component casting sand mold forming machine according to claim 5, characterized in that: An inclined groove (30) is provided on the inner side of the base (19), a collecting box (31) is fixedly connected to the outer side of the base (19), a movable plate (32) is rotatably connected to the inner side of the collecting box (31), and a valve (33) is connected to the inner side of the collecting box (31).

7. A metal component casting sand mold forming machine according to claim 6, characterized in that: The outer side of the first rack (6) is fixedly connected to a T-shaped bar (601), and one side of the first gear (5) is rotatably connected to a connecting block (34), and the T-shaped bar (601) and the connecting block (34) are slidably connected.

8. The metal component casting sand mold forming machine according to claim 7, characterized in that: An air cushion (35) is fixedly connected to the inner side of the tamping plate (12), ventilation grooves (36) are provided on the surfaces of the lifting rod (11) and the tamping plate (12), and an air pipe (37) is rotatably connected to the outer side of the lifting rod (11).

9. The metal component casting sand mold forming machine according to claim 8, characterized in that: A slot (38) is provided on the surface of the lifting plate (17) on one side, and an insertion rod (39) is slidably connected to the inner side of the base (19). One end of the insertion rod (39) is fixedly connected to a second spring (40), and one end of the second spring (40) is fixedly connected to the base (19).

10. The metal component casting sand mold forming machine according to claim 9, characterized in that: An extension rod (41) is fixedly connected to the outer side of the frame (3), an extension plate (42) is fixedly connected to the outer side of the lower template (1), and the extension rod (41) and the extension plate (42) are slidably connected.

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