A metal part casting sand mold forming machine

Abstract

The application belongs to the technical field of automobile metal part casting, in particular to a metal part casting sand mold forming machine which comprises a lower mold plate, a fastening screw is threadedly connected to the inner side of the lower mold plate, a frame is bolted to the outer side of the lower mold plate, a motor is fixedly connected to the outer side of the frame, a first gear is fixedly connected to the output end of the motor, a first rack is engaged with the outer side of the first gear, a baffle is fixedly connected to the outer side of the first rack, a rotating plate is rotatably connected to the inner side of the baffle, a sand feeding pipeline is in communication with the inner side of the rotating plate, and a first spring is fixedly connected to the outer side of the baffle; that is, when filling the casting sand, the sand feeding pipeline is moved back and forth, so that the casting sand is more widely spread, the filling of the casting sand is more uniform, the filling of the small holes and groove positions on the model part is more sufficient, and tamping is performed after filling, so that the 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;

[0006] Before the embodiment of the present application is used, ensure that the diameter of the rotating plate is the same as the inside width of the frame, and the sand feeding 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 the embodiment of the present application is used, the model part is placed on the lower mold plate, and the model part is fixed by screwing the model part into the model part, then the lower mold plate is connected to the frame by bolts, so that the model part enters the inside of the frame, and the casting sand is injected into the inside of the frame through the sand feeding pipe, then the first gear is driven to rotate by the motor, the first rack is driven to move by the first gear, the baffle is driven to move back and forth by the first rack, and the sand feeding pipe is driven to move back and forth by the baffle to spread the casting sand, at the same time, when the baffle moves back and forth, the teeth will move, the teeth will rotate at the same time through the meshing of the teeth and the second rack, so as to drive the rotating plate and the sand feeding pipe to rotate, so as to further expand the spreading range of the sand feeding pipe, so that the casting sand fills the space between the model part and the lower mold plate, the frame and the baffle, and after filling, the user pulls the lifting rod up and down to move, so that the lifting rod drives the tamping plate to move to extrude and tamp the casting sand, and finally the lower mold plate is taken out, so that the casting sand mold on the upper side can be taken out;

[0007] That is, when filling the casting sand, the sand feeding pipe moves back and forth, so that the spreading range of the casting sand is more extensive, the filling of the casting sand is more uniform, and the filling of the small holes and grooves on the model part is more sufficient, and after filling, the casting sand is tamped, so that the production of the casting sand mold is more stable.

[0008] Preferably, the baffle is fixedly connected with a guide frame on the outside, the first sliding rod is slidably connected in the guide frame, and the first sliding rod and the lifting rod are fixedly connected.

[0009] Before the embodiment of the present application is used, ensure that the space in the guide frame is the same as the diameter of the first sliding rod, when the embodiment of the present application is used, the first spring is driven to rotate when the rotating plate rotates, the lifting rod is driven to rotate by the first spring, the first sliding rod is driven to rotate by the lifting rod, so that when the first sliding rod moves, it is limited and guided by the guide frame, so that when the first sliding rod moves to the recess of the guide frame, it will move down, the lifting rod and the tamping plate are driven to move down by the first sliding rod, and when the first sliding rod moves out of the recess, the first sliding rod will move up, thereby driving the tamping plate to move up, to realize the reciprocating movement;

[0010] That is, when the baffle moves, the tamping plate can reciprocate up and down, so that when the casting sand is about to be filled, the tamping plate can automatically extrude and tamp the casting sand, without the need for additional operation by the user, improving the convenience of the device.

[0011] Preferably, the frame is fixedly connected with a lifting plate outside, a limiting box is slidably connected with the lifting plate outside, a base is fixedly connected with the limiting box outside, one end of the lifting plate is fixedly connected with a second sliding rod, the second sliding rod is slidably connected with the base, the base is fixedly connected with a gas cylinder outside, an active guide rail is fixedly connected with the output end of the gas cylinder, and the active guide rail is slidably connected with the second sliding rod;

[0012] Before the embodiment of the application is used, the space inside the active guide rail is ensured to be the same as the diameter of the second sliding rod, and the two sides of the lifting plate are tightly attached to the inner wall of the limiting box, when the casting sand is about to be filled, the injection of the casting sand can be stopped first, the active guide rail is driven by the gas cylinder to move back and forth, the second sliding rod is moved up and down through the movement of the active guide rail and the sliding connection with the second sliding rod, so that the lifting plate, the frame, other components connected to the inside of the frame, and the casting sand are moved up and down through the second sliding rod;

[0013] That is, when the casting sand is about to be filled, the device can drive it to move up and down to reduce the gap inside, make the filling more compact, and make the casting sand more evenly dispersed through the shaking, further improving the stability of the device.

[0014] Preferably, the base is fixedly connected with a limiting block outside, the limiting block is slidably connected with a limiting rod inside, and the limiting rod is fixedly connected with the active guide rail.

[0015] When the active guide rail moves back and forth, the movement track of the limiting rod is limited by the limiting block, and the limiting rod is fixedly connected with the active guide rail, so that the limiting rod can further limit the end of the active guide rail away from the gas cylinder.

[0016] That is, when the active guide rail moves, the limiting rod further limits it, so that the movement of the active guide rail is more stable, thereby reducing the vibration caused by the contact between the second sliding rod and the active guide rail when the second sliding rod moves up and down, and improving the stability of the device.

[0017] Preferably, the frame is fixedly connected with a lifting block outside, the lifting block is fixedly connected with a piston at one end, the piston is slidably connected with a storage cylinder outside, the storage cylinder is in communication with a conveying hose inside, the conveying hose is in communication with a hollow pad at one end, and the hollow pad is fixedly connected with the frame.

[0018] Before the specific use of the embodiment of the present application, it is ensured that the hollow pad is made of wear-resistant material, and before use, a suitable volume of liquid is injected into the inside of the storage cylinder and the hollow pad. When the casting sand is poured into the inside of the frame, the lifting block is driven to move downward, the piston is driven to move downward through the lifting block, the liquid inside the storage cylinder is pushed into the delivery hose through the piston, the liquid is brought into the inside of the hollow pad through the delivery hose, and the hollow pad is expanded. When the casting sand accumulates to a certain volume, the casting sand is extruded by the expansion of the hollow pad;

[0019] That is, after the casting sand accumulates to a certain volume, the up-down movement of the frame causes the piston to repeatedly pull the liquid into and out of the hollow pad, so that the hollow pad repeatedly switches between flattening and expanding, thereby continuously extruding the casting sand, so that the casting sand is easily further extruded and compacted, the molding of the casting sand is more stable, and the stability of the device in use is improved.

[0020] Preferably, a chute is formed in the inside of the base, a collection box is fixedly connected to the outside of the base, a movable plate is rotatably connected to the inside of the collection box, and a valve is communicated in the inside of the collection box.

[0021] Before the specific use of the embodiment of the present application, it is ensured 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. After the casting sand is compacted, the lower mold plate can be removed, so that the lower mold plate drives the model on its upper side and the casting sand on its outside to move away from the frame to take out the molded casting sand. When the casting sand mold is taken out, the casting sand on the outer surface falls off, the chute guides the casting sand, the casting sand falls on one end of the movable plate, the one end of the movable plate becomes heavy, the movable plate rotates, the casting sand falls into the inside of the collection box, and the movable plate shields the casting sand.

[0022] That is, when the lower mold plate drives the casting sand mold to be taken out, the chute guides the falling casting sand, the casting sand falls into the inside of the collection box for collection, and the movable plate shields the casting sand, so that it is not easy to fall out of the collection box, so as to facilitate subsequent recycling, and the convenience of the device in use is improved.

[0023] Preferably, a T-shaped bar is fixedly connected to the outside of the first rack, 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.

[0024] When the embodiment of the present application is used, the T-shaped bar close to the first gear is clamped by the connecting block, so that the position of the first rack is further limited by the T-shaped bar, and the engagement of the first rack and the first gear is more stable.

[0025] 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.

[0026] 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;

[0027] 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.

[0028] 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.

[0029] 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;

[0030] 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;

[0031] 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.

[0032] 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;

[0033] 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.

[0034] 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.

[0035] The present invention is beneficial in that:

[0036] 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.

[0037] 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

[0038] 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.

[0039] Figure 1 This is a structural front view of the present invention;

[0040] Figure 2 It is a rear view of the structure in the present invention;

[0041] Figure 3 Schematic diagram of the structure of the frame in the present invention;

[0042] Figure 4 This is a schematic diagram of another viewing angle structure of the frame in the present invention;

[0043] Figure 5 Schematic diagram of the structure of the motor in the present invention;

[0044] Figure 6 Schematic diagram of the structure of the baffle in the present invention;

[0045] Figure 7 Schematic diagram of the structure of the tamping plate in the present invention;

[0046] Figure 8 Schematic diagram of the structure of the base in the present invention;

[0047] Figure 9 It is a structural schematic diagram of the collection box in the present invention.

[0048] In the figure: 1, the lower mold plate; 2, the fastening screw; 3, the frame; 4, the motor; 5, the first gear; 6, the first rack; 601, the T-shaped strip; 7, the baffle; 8, the rotating plate; 9, the sand feeding pipeline; 10, the first spring; 11, the lifting rod; 12, the tamping plate; 13, the second rack; 14, the tooth; 15, the guide rail frame; 16, the first sliding rod; 17, the lifting plate; 18, the limiting frame; 19, the base; 20, the second sliding rod; 21, the air cylinder; 22, the movable guide rail; 23, the limiting block; 24, the limiting rod; 25, the lifting block; 26, the piston; 27, the storage cylinder; 28, the conveying hose; 29, the hollow pad; 30, the chute; 31, the collection box; 32, the movable plate; 33, the valve; 34, the connecting block; 35, the air cushion; 36, the air passage; 37, the air pipe; 38, the insertion slot; 39, the insertion rod; 40, the second spring; 41, the extension rod; 42, the extension plate. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0050] The specific embodiments are given below.

[0051] Please refer to Figures 1 to 9 As shown in the figure, the metal part casting sand mold forming machine comprises a lower mold plate 1, a fastening screw 2 is screw-connected to the inner side of the lower mold plate 1, a frame 3 is bolt-connected to the outer side of the lower mold plate 1, a motor 4 is fixedly connected to the outer side of the frame 3, a first gear 5 is fixedly connected to the output end of the motor 4, a first rack 6 is engaged with the outer side of the first gear 5, a baffle 7 is fixedly connected to the outer side of the first rack 6, a rotating plate 8 is rotatably connected to the inner side of the baffle 7, a sand feeding pipeline 9 is communicated with the inner side of the rotating plate 8, a first spring 10 is fixedly connected to the outer side of the baffle 7, a lifting rod 11 is fixedly connected to one end of the first spring 10, a tamping plate 12 is fixedly connected to the other end of the lifting rod 11, the lifting rod 11 and the baffle 7 are slidingly connected, a second rack 13 is fixedly connected to the inner side of the frame 3, a tooth 14 is fixedly connected to the outer side of the rotating plate 8, the second rack 13 and the tooth 14 are engaged;

[0052] Before the embodiment of the present application is used, ensure that the diameter of the rotating plate 8 is the same as the inside width of the frame 3, and the sand feeding pipe 9 is located at the edge of the rotating plate 8, and ensure that the space required for the model part to be formed is smaller than the diameter of the tamping plate 12, when the embodiment of the present application is used, the model part is placed on the lower mold plate 1, and the model part is fixed by screwing the model part through the fastening screw 2, then the lower mold plate 1 is connected to the frame 3 through bolts, so that the model part enters the inside of the frame 3, and then the casting sand is injected into the inside of the frame 3 through the sand feeding pipe 9, then the first gear 5 is driven to rotate by the motor 4, the first rack 6 is driven to move by the first gear 5, the baffle 7 is driven to move back and forth by the first rack 6, the sand feeding pipe 9 is driven to move back and forth by the baffle 7 to spread the casting sand, at the same time, when the baffle 7 moves back and forth, the teeth 14 will move, the teeth 14 will rotate while moving through the meshing of the teeth 14 and the second rack 13, so as to drive the rotating plate 8 and the sand feeding pipe 9 to rotate, so as to further expand the spreading range of the sand feeding pipe 9, so that the casting sand fills the space between the model part and the lower mold plate 1, the frame 3 and the baffle 7, and after filling, the tamping plate 12 is moved up and down by the user pulling the lifting rod 11, so that the lifting rod 11 drives the tamping plate 12 to move to extrude and tamp the casting sand, and finally the lower mold plate 1 is taken out, so that the casting sand mold on the upper side thereof can be taken out;

[0053] That is, when filling the casting sand, the sand feeding pipe 9 moves back and forth, so that the spreading range of the casting sand is more extensive, the filling of the casting sand is more uniform, and the filling of the small holes and recessed positions on the model part is more sufficient, and after filling, tamping is performed, so that the production of the casting sand mold is more stable.

[0054] Please refer to Figure 1 and Figure 6 As shown, the baffle 7 is fixedly connected with a guide rail frame 15 on the outside, the first sliding rod 16 is slidably connected in the inside of the guide rail frame 15, and the first sliding rod 16 and the lifting rod 11 are fixedly connected;

[0055] Before the embodiment of the present application is used, ensure that the space in the inside of the guide rail frame 15 is the same as the diameter of the first sliding rod 16, when the embodiment of the present application is used, the rotating plate 8 rotates, the first spring 10 is driven to rotate by the rotating plate 8, the lifting rod 11 is driven to rotate by the first spring 10, the first sliding rod 16 is driven to rotate by the lifting rod 11, so that when the first sliding rod 16 moves, it is guided by the guide rail frame 15, so that when the first sliding rod 16 moves to the recessed position of the guide rail frame 15, it will move down, the lifting rod 11 and the tamping plate 12 are driven to move down by the first sliding rod 16, and when the first sliding rod 16 moves out of the recessed position, the first sliding rod 16 will move up, thereby driving the tamping plate 12 to move up, so as to realize the back-and-forth circulation;

[0056] 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.

[0057] 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.

[0058] 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;

[0059] 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.

[0060] 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;

[0061] 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;

[0062] 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.

[0063] See also Figure 2 and Figure 3 As 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;

[0064] 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;

[0065] 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.

[0066] 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;

[0067] 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.

[0068] 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.

[0069] 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;

[0070] 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;

[0071] 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.

[0072] 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;

[0073] 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.

[0074] 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.

[0075] See also Figure 3 and Figure 8As 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;

[0076] 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;

[0077] 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.

[0078] 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;

[0079] 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.

[0080] 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.

[0081] 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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