A steel structure casting mold that is easy to disassemble

Abstract

This invention discloses a steel structure casting mold that is easy to disassemble, relating to the field of casting technology. To solve the problem of casting defects, it specifically includes an upper moving mold and a lower stationary mold that cooperate with each other. The inner wall of the upper moving mold has a sprue, and the outer wall of the upper moving mold at the sprue is welded with a gate. The inner wall of the upper moving mold has a U-shaped channel, with steps at both ends. A sliding block is slidably connected to the inner wall of the step, and the inner wall of the sliding block has a through hole that is longitudinally offset from the U-shaped channel. A spring is fastened to one end of the sliding block, and the other end of the spring is fastened to the inner wall of the step. By setting up components such as the sliding block and the U-shaped channel, this invention, on the one hand, enables the upper moving mold to vibrate when pulsed gas is introduced, thereby using vibration to fill the liquid metal and prevent casting defects; on the other hand, it can also cooperate with coolant and hot liquid to achieve accelerated cooling and preheating, increasing casting efficiency.

Description

Technical Field

[0001] This invention relates to the field of casting technology, and in particular to a steel structure casting mold that is easy to disassemble. Background Art

[0002] Steel structure buildings are widely used due to their advantages such as energy saving, environmental protection, reusability, and short construction period. Most of the components of steel structure buildings are prefabricated, and some of these prefabricated components are castings. During the production of castings, molten metal at high temperature is used in conjunction with a casting mold for casting. After cooling and shaping, the burrs are removed to obtain the finished product.

[0003] A search revealed Chinese patent publication number CN107671245A, which discloses a cylinder head casting mold and casting method, including an upper mold and a lower mold. The upper mold is characterized by: a fixed plate connected to its top end, and a positioning ring at the axis between the upper mold and the fixed plate; a casting port connected to the bottom end of the positioning ring, with the axis of the casting port perpendicular to the plane of the upper mold; several guide pillars at the bottom end of the upper mold, which are fitted with guide pillar sleeves at the top end of the lower mold; a male mold at the top end of the lower mold, connecting the male mold to the upper mold; several ejector pins at the top end of the male mold, passing through several cylinder head holes on the cylinder head and connecting to the upper mold; a drain port between the lower mold and the male mold; a base plate connected to the bottom end of the lower mold, with a support column between the base plate and the lower mold; and an ejector plate on one side of the support column.

[0004] The above-mentioned patent has the following shortcomings: it directly casts the liquid metal, but because the fluidity of the liquid metal is not very good, it is difficult to completely fill the corners of the cavity during the casting process, which will gradually lead to defects.

[0005] Therefore, this invention proposes a steel structure casting mold that is easy to disassemble. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a steel structure casting mold that is easy to disassemble.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A steel structure casting mold that is easy to disassemble includes an upper moving mold and a lower stationary mold that cooperate with each other.

[0009] The upper moving mold has a sprue on its inner wall and a gate welded to the outer wall of the upper moving mold at the sprue. The upper moving mold has a U-shaped channel on its inner wall. Both ends of the U-shaped channel have steps. The inner wall of the steps is slidably connected to a sliding block. The inner wall of the sliding block has a through hole that is longitudinally offset from the U-shaped channel. A spring is fastened to the end face of the sliding block, and the other end of the spring is fastened to the inner wall of the step.

[0010] Preferably: the bottom outer wall of the lower stationary mold is fixed with a base by bolts, the top outer wall of the base is fixed with a guide rod by bolts, the top outer wall of the guide rod is fixed with a top plate by bolts, the top outer wall of the top plate is fixed with a telescopic device by bolts, and the telescopic end of the telescopic device is fixed with bolts to the top outer wall of the upper moving mold.

[0011] Furthermore, the side wall of the upper moving mold is fixed with a slider by bolts, and the slider is slidably connected to the outer wall of the guide rod.

[0012] Based on the aforementioned scheme: a demolding mechanism is provided at the bottom of the lower stationary mold, the demolding mechanism including an ejector plate and an ejector assembly, the ejector plate being fitted into the inner wall of the lower stationary mold.

[0013] A better embodiment of the aforementioned scheme is as follows: the bottom outer wall of the slider is fixed with a connecting frame by bolts, the side wall of the connecting frame is fixed with a hollow cylinder by bolts, the inner wall of the hollow cylinder is movably inserted with a hollow shaft, and the hollow shaft is fixed to the bottom outer wall of the top plate.

[0014] As a further aspect of the present invention: a spiral groove is provided on the outer wall of the hollow shaft, and a limiting protrusion is slidably connected to the inner wall of the hollow cylinder. The limiting protrusion is movably limited and matched with the side wall of the spiral groove, and a second spring is fastened to the side wall of the limiting protrusion, with the other end of the second spring fastened to the inner wall of the hollow cylinder.

[0015] Meanwhile, the inner wall of the hollow shaft is rotatably connected to a multi-protruding cam, and the radial inner wall of the hollow shaft is slidably fitted with a stop block, which is in active contact with the side wall of the multi-protruding cam.

[0016] As a preferred embodiment of the present invention: the inner cavity of the hollow shaft is rotatably connected to a plurality of planetary gears via a connecting shaft, the inner sides of the plurality of planetary gears are meshed with the same sun gear, the outer sides of the plurality of planetary gears are meshed with the same gear ring, and the top of the sun gear is fixedly connected to the end face of a multi-protruding cam.

[0017] Meanwhile, the gear ring is rotatably connected to the inner wall of the hollow shaft, and a limit cylinder is fixed at the bottom of the gear ring.

[0018] As a preferred embodiment of the present invention: the inner wall of the limiting cylinder is provided with a key-shaped groove, the bottom inner wall of the hollow cylinder is fixed with a limiting shaft, and the outer wall of the limiting shaft is welded with a key-shaped protrusion that fits the key-shaped groove with a clearance.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The present invention, by setting components such as sliding blocks and "U"-shaped channels, can, on the one hand, realize the vibration of the upper moving mold when pulsed gas is introduced, thereby using vibration to fill liquid metal and prevent defects in castings; on the other hand, it can also cooperate with coolant and hot liquid to achieve the function of accelerated cooling and preheating, thereby increasing casting efficiency.

[0021] 2. In this invention, by setting a top plate, the casting can be lifted, thereby achieving a demolding effect and increasing ease of use. Furthermore, by setting a connecting frame, it can rise and fall with the upper moving mold, increasing synchronous linkage.

[0022] 3. In this invention, the spiral groove and the limiting protrusion can, on the one hand, utilize the vibration generated by the separation and engagement of the limiting protrusion and the spiral groove to loosen the casting and the top plate. After loosening, they can be used to separate the casting from the lower stationary mold, thereby avoiding the deformation of the casting caused by demolding with only static pressure.

[0023] 4. This invention, through a clever combination of mechanical structures, can separately realize the vibration of the top plate, the vibration of the lower stationary mold, and the lifting and lowering of the top plate, and each action is achieved solely by the lifting and lowering of the connecting frame, thus realizing integrated power and increasing synchronous linkage. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a steel casting mold that is easy to disassemble, as proposed in this invention.

[0025] Figure 2 This is a cross-sectional view of the upper moving mold of a steel structure casting mold that is easy to disassemble, as proposed in this invention.

[0026] Figure 3 This is a schematic diagram of a demolding mechanism for a steel structure casting mold that is easy to disassemble, as proposed in this invention.

[0027] Figure 4 This is a schematic diagram of a hollow cylinder and hollow shaft structure for a steel structure casting mold that is easy to disassemble, as proposed in this invention.

[0028] Figure 5 This invention provides a steel structure casting mold that is easy to disassemble. Figure 4 Schematic diagram of part A in the middle;

[0029] Figure 6 This is a schematic diagram of the limiting shaft and limiting cylinder structure of a steel structure casting mold that is easy to disassemble, as proposed in this invention.

[0030] Figure 7This invention provides a steel structure casting mold that is easy to disassemble. Figure 6 Schematic diagram of Part B in the middle section;

[0031] Figure 8 This is a schematic diagram of the key-shaped groove and key-shaped protrusion structure of a steel structure casting mold that is easy to disassemble, as proposed in this invention.

[0032] Figure 9 This is a schematic diagram of a sliding block structure for a steel structure casting mold that is easy to disassemble, as proposed in this invention.

[0033] In the diagram: 1. Base; 2. Slider; 3. Guide rod; 4. Top plate; 5. Expansion joint; 6. Upper moving mold; 7. Lower stationary mold; 8. Demolding mechanism; 9. Gate; 10. Sprue; 11. Through hole; 12. Step; 13. Sliding block; 14. Spring 1; 15. "U" shaped channel; 16. Ejector plate; 17. Ejector assembly; 18. Connecting frame; 19. Hollow cylinder; 20. Hollow shaft; 21. Spiral groove; 22. Limiting protrusion; 23. Spring 2; 24. Limiting shaft; 25. Limiting cylinder; 26. Multi-protrusion cam; 27. Impact block; 28. Connecting shaft; 29. ​​Planetary gear; 30. Gear ring; 31. Sun gear; 32. Keyway; 33. Key protrusion. Detailed Implementation

[0034] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0035] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Example

[0036] A steel structure casting mold that is easy to disassemble, such as Figures 1-8 As shown, the upper moving mold 6 and the lower stationary mold 7 cooperate with each other. The inner wall of the upper moving mold 6 is provided with a sprue 10. The outer wall of the upper moving mold 6 located at the sprue 10 is welded with a gate 9. The inner wall of the upper moving mold 6 is provided with a "U"-shaped channel 15. Both ends of the "U"-shaped channel 15 are provided with steps 12. The inner wall of the step 12 is slidably connected with a sliding block 13. The inner wall of the sliding block 13 is provided with a through hole 11 that is longitudinally offset from the "U"-shaped channel 15. The end face of the sliding block 13 is fastened with a spring 14. The other end of the spring 14 is fastened to the inner wall of the step 12.

[0037] When in use, this device can pour molten liquid metal from the gate 9 into the interior of the runner 10, thereby filling the cavity formed by the upper moving mold 6 and the lower stationary mold 7. During the casting process, pulsed gas can be introduced into one end of the "U"-shaped runner 15. When the gas enters, the through hole 11 in the sliding block 13 at the air inlet end intersects with the "U"-shaped runner 15, thereby achieving the effect of end face sealing. At this time, the sliding block 13 is lowered by the gas pressure, and the "U"-shaped runner 15 is connected. At the same time, the sliding block 13 at the other end moves upward. When the gas pressure disappears, the gas pressure on the sliding block 13 becomes small, and the sliding block 13 moves to the end face of the step 12, thereby forming a collision and generating vibration. As the pulsed gas continues to circulate, it applies vibration to the upper moving mold 6, using vibration to fill the liquid metal. At the same time, during the cooling stage, coolant can be introduced into the "U"-shaped runner 15 to accelerate cooling. Before casting, hot liquid can be introduced into the "U"-shaped runner 15 to achieve preheating.

[0038] This device, by setting components such as sliding block 13 and "U"-shaped channel 15, can, on the one hand, realize the vibration of upper moving mold 6 when pulsed gas is introduced, thereby using vibration to fill liquid metal and prevent casting defects. On the other hand, it can also cooperate with coolant and hot liquid to realize the function of accelerated cooling and preheating, increasing casting efficiency.

[0039] To solve the mold opening and closing problem; such as Figure 1 As shown, the bottom outer wall of the lower stationary mold 7 is fixed with a base 1 by bolts, the top outer wall of the base 1 is fixed with a guide rod 3 by bolts, the top outer wall of the guide rod 3 is fixed with a top plate 4 by bolts, the top outer wall of the top plate 4 is fixed with a telescopic device 5 by bolts, the telescopic end of the telescopic device 5 is fixed with a bolt to the top outer wall of the upper moving mold 6, and the side wall of the upper moving mold 6 is fixed with a slider 2 by bolts, the slider 2 is slidably connected to the outer wall of the guide rod 3.

[0040] The telescopic device 5 can extend and retract to drive the upper moving mold 6 to rise and fall, thereby enabling the opening and closing of the upper moving mold 6 and the lower stationary mold 7. Furthermore, the upper moving mold 6 can be guided by the slider 2 during the rising and falling process, increasing the accuracy and stability of the rising and falling.

[0041] In this embodiment, molten liquid metal can be poured from the gate 9 into the interior of the runner 10, thereby filling the cavity formed by the upper moving mold 6 and the lower stationary mold 7. During the casting process, pulsed gas can be introduced into one end of the "U"-shaped runner 15. When the gas enters, the through hole 11 in the sliding block 13 at the air inlet end intersects with the "U"-shaped runner 15, thus achieving an end-face sealing effect. At this time, the sliding block 13 moves downward under the gas pressure, and the "U"-shaped runner 15 is connected. At the same time, the sliding block 13 at the other end moves upward. When the gas pressure disappears, the gas pressure on the sliding block 13 decreases. The sliding block 13 moves to the end face of the step 12, thus forming a collision and generating vibration. As the pulsed gas continues to circulate, it applies vibration to the upper moving mold 6, using the vibration to fill the liquid metal. At the same time, during the cooling stage, coolant can be introduced into the "U"-shaped channel 15 to accelerate cooling. During the pre-casting stage, hot liquid can be introduced into the "U"-shaped channel 15 to achieve preheating. The extension and retraction of the telescopic device 5 can drive the upper moving mold 6 to rise and fall, thus realizing the opening and closing action of the upper moving mold 6 and the lower stationary mold 7. Furthermore, the upper moving mold 6 can be guided by the slider 2 during the rising and falling process, increasing the accuracy and stability of the rising and falling. Example

[0042] A steel structure casting mold that is easy to disassemble, such as Figures 1-9 As shown, in order to solve the demolding problem, this embodiment makes the following improvements based on embodiment 1: the bottom of the lower stationary mold 7 is provided with a demolding mechanism 8, the demolding mechanism 8 includes an ejector plate 16 and an ejector assembly 17, the ejector plate 16 is fitted to the inner wall of the lower stationary mold 7.

[0043] After cooling and solidification, the top plate 16 can be lifted by the top assembly 17, thereby lifting the casting.

[0044] To address the reliability of demolding, such as Figures 1-8 The problem is that the bottom outer wall of the slider 2 is fixed with a connecting frame 18 by bolts, and the side wall of the connecting frame 18 is fixed with a hollow cylinder 19 by bolts. A hollow shaft 20 is movably inserted into the inner wall of the hollow cylinder 19. The hollow shaft 20 is fixed to the bottom outer wall of the top plate 16. A spiral groove 21 is opened on the outer wall of the hollow shaft 20. A limiting protrusion 22 is slidably connected to the inner wall of the hollow cylinder 19. The limiting protrusion 22 is movably limited and matched with the side wall of the spiral groove 21. A second spring 23 is fastened to the side wall of the limiting protrusion 22. The other end of the second spring 23 is fastened to the inner wall of the hollow cylinder 19.

[0045] The hollow shaft 20 has a multi-protruding cam 26 rotatably connected to its inner wall, and a stop block 27 is slidably fitted to the radial inner wall of the hollow shaft 20. The stop block 27 is in active contact with the side wall of the multi-protruding cam 26.

[0046] The hollow shaft 20 has multiple planetary gears 29 rotatably connected to its inner cavity via a connecting shaft 28. The inner sides of the multiple planetary gears 29 are meshed with the same sun gear 31, and the outer sides of the multiple planetary gears 29 are meshed with the same gear ring 30. The gear ring 30 is rotatably connected to the inner wall of the hollow shaft 20. The top of the sun gear 31 is fixedly connected to the end face of the multi-protruding cam 26, and the bottom of the gear ring 30 is fixedly fixed with a limit sleeve 25.

[0047] The inner wall of the limiting cylinder 25 is provided with a key-shaped groove 32, and the bottom inner wall of the hollow cylinder 19 is fixed with a limiting shaft 24. The outer wall of the limiting shaft 24 is welded with a key-shaped protrusion 33 that is in clearance fit with the key-shaped groove 32.

[0048] When in the mold-parting state, the slider 2 rises, thereby pulling the hollow cylinder 19 upward through the connecting frame 18. Since the top plate 16 also has adhesive force with the casting at this time, it experiences rotational resistance. The limiting protrusion 22 experiences significant resistance from the spiral groove 21. Because the end face of the limiting protrusion 22 is curved, a component force along the axial direction of the limiting protrusion 22 is generated, causing the limiting protrusion 22 to contract inward. During this continuous contraction and contact process, the hollow shaft 20 vibrates, thereby loosening the top plate 16 from the casting. After loosening, the rotational resistance of the hollow shaft 20 is significantly reduced, allowing the limiting protrusion 22 to move along the spiral groove 21. As the path of groove 21 slides and hollow shaft 20 rotates, the adhesion between it and lower stationary mold 7 is still maintained. When hollow shaft 20 rotates relative to hollow cylinder 19, the transmission action of gear ring 30, sun gear 31, and planet gear 29 will also cause multi-protruding cam 26 to rotate relative to hollow shaft 20. Thus, the multi-protruding cam 26 continuously limits the impact block 27, causing the impact block 27 to move outward periodically. This allows the impact block 27 to periodically impact the lower stationary mold 7, applying vibration to the lower stationary mold 7. The vibration then loosens the lower stationary mold 7 from the casting. After the maximum relative motion stroke between hollow cylinder 19 and hollow shaft 20 is reached, the top plate 16 rises, gradually lifting the loosened material.

[0049] In this embodiment, when in the mold-parting state, the slider 2 rises, thereby pulling the hollow cylinder 19 upward through the connecting frame 18. Since the top plate 16 also has adhesive force with the casting at this time, it experiences rotational resistance. The limiting protrusion 22 experiences significant resistance from the spiral groove 21. Because the end face of the limiting protrusion 22 is curved, a component force along the axial direction of the limiting protrusion 22 is generated, causing the limiting protrusion 22 to contract inward. During this continuous contraction and contact process, the hollow shaft 20 vibrates, thereby loosening the top plate 16 from the casting. After loosening, the rotational resistance of the hollow shaft 20 is significantly reduced, allowing the limiting protrusion 22 to... Sliding along the path of the spiral groove 21, the hollow shaft 20 rotates. At this time, the adhesion between it and the lower stationary mold 7 is still maintained. When the hollow shaft 20 rotates relative to the hollow cylinder 19, the transmission action of the gear ring 30, the sun gear 31, and the planet gear 29 will also cause the multi-protruding cam 26 to rotate relative to the hollow shaft 20. Thus, the multi-protruding cam 26 continuously limits the impact block 27, causing the impact block 27 to move outward periodically. This allows the impact block 27 to periodically strike the lower stationary mold 7, applying vibration to the lower stationary mold 7. The vibration then loosens the lower stationary mold 7 from the casting. After the maximum relative motion stroke between the hollow cylinder 19 and the hollow shaft 20 is reached, the top plate 16 rises, gradually lifting the loosened material.

[0050] This device, by setting the top plate 16, can lift the casting, thereby achieving the demolding effect and increasing the ease of use. Furthermore, by setting the connecting frame 18, it can rise and fall with the upper moving mold 6, increasing the synchronous linkage.

[0051] In addition, this device, through the spiral groove 21 and the limiting protrusion 22, can loosen the casting and the top plate 16 by using the vibration generated by the separation and combination of the limiting protrusion and the spiral groove. After loosening, it can also use their cooperation to separate the casting from the lower stationary mold 7, thereby avoiding the deformation of the casting caused by demolding by using only static pressure.

[0052] Meanwhile, through a clever combination of mechanical structures, this device can realize the vibration of the top plate 16, the vibration of the lower stationary mold 7, and the lifting and lowering of the top plate 16, and each action is achieved solely by the lifting and lowering of the connecting frame 18, thus realizing integrated power and increasing synchronous linkage.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A steel structure casting mold that is easy to disassemble, comprising an upper moving mold (6) and a lower stationary mold (7) that cooperate with each other, characterized in that, The upper moving mold (6) has a sprue (10) on its inner wall and a gate (9) welded to the outer wall of the upper moving mold (6) at the sprue (10). The upper moving mold (6) has a U-shaped channel (15) on its inner wall and steps (12) at both ends of the U-shaped channel (15). A sliding block (13) is slidably connected to the inner wall of the step (12). A through hole (11) is opened on the inner wall of the sliding block (13) and is longitudinally misaligned with the U-shaped channel (15). A spring (14) is fastened to the end face of the sliding block (13), and the other end of the spring (14) is fastened to the inner wall of the step (12).

2. The easily disassembled steel structure casting mold according to claim 1, characterized in that, The bottom outer wall of the lower stationary mold (7) is fixed with a base (1) by bolts. The top outer wall of the base (1) is fixed with a guide rod (3) by bolts. The top outer wall of the guide rod (3) is fixed with a top plate (4) by bolts. The top outer wall of the top plate (4) is fixed with a telescopic device (5) by bolts. The telescopic end of the telescopic device (5) is fixed with the top outer wall of the upper moving mold (6) by bolts.

3. The easily disassembled steel structure casting mold according to claim 2, characterized in that, The upper moving mold (6) has a slider (2) fixed to its side wall by bolts, and the slider (2) is slidably connected to the outer wall of the guide rod (3).

4. The easily disassembled steel structure casting mold according to claim 1, characterized in that, The bottom of the lower stationary mold (7) is provided with a demolding mechanism (8), which includes an ejector plate (16) and an ejector assembly (17). The ejector plate (16) is fitted to the inner wall of the lower stationary mold (7).

5. A steel structure casting mold that is easy to disassemble according to claim 3, characterized in that, The bottom outer wall of the slider (2) is fixed with a connecting frame (18) by bolts, and the side wall of the connecting frame (18) is fixed with a hollow cylinder (19) by bolts. The inner wall of the hollow cylinder (19) is movably connected with a hollow shaft (20), and the hollow shaft (20) is fixed to the bottom outer wall of the top plate (16).

6. The easily disassembled steel structure casting mold according to claim 5, characterized in that, The outer wall of the hollow shaft (20) is provided with a spiral groove (21), and the inner wall of the hollow cylinder (19) is slidably connected with a limiting protrusion (22). The limiting protrusion (22) is movably limited and matched with the side wall of the spiral groove (21), and the side wall of the limiting protrusion (22) is fastened with a spring (23), and the other end of the spring (23) is fastened to the inner wall of the hollow cylinder (19).

7. A steel structure casting mold that is easy to disassemble according to claim 5, characterized in that, The hollow shaft (20) has a multi-protruding cam (26) rotatably connected to its inner wall, and a slidable block (27) is fitted to the radial inner wall of the hollow shaft (20). The slidable block (27) is in contact with the side wall of the multi-protruding cam (26).

8. A steel structure casting mold that is easy to disassemble according to claim 5, characterized in that, The hollow shaft (20) has multiple planetary gears (29) rotatably connected to the inner cavity via a connecting shaft (28). The inner sides of the multiple planetary gears (29) are meshed with the same sun gear (31), and the outer sides of the multiple planetary gears (29) are meshed with the same gear ring (30). The top of the sun gear (31) is fixedly connected to the end face of the multi-protruding cam (26).

9. A steel structure casting mold that is easy to disassemble according to claim 8, characterized in that, The gear ring (30) is rotatably connected to the inner wall of the hollow shaft (20), and a limit cylinder (25) is fixed at the bottom of the gear ring (30).

10. A steel structure casting mold that is easy to disassemble according to claim 9, characterized in that, The inner wall of the limiting cylinder (25) is provided with a key-shaped groove (32), and the bottom inner wall of the hollow cylinder (19) is fixed with a limiting shaft (24). The outer wall of the limiting shaft (24) is welded with a key-shaped protrusion (33) that fits the key-shaped groove (32) with a clearance.

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