A water pump cover casting mold

Abstract

The utility model belongs to foundry mould technical field especially is a kind of water pump cover casting mould, including bottom plate, top plate, upper die plate, hydraulic cylinder and lower die plate, support subassembly includes second support column and support seat, the support seat is equipped with stepped hole;It further includes: be located in the hammering type electromagnetic vibrator of support seat bottom surface;Fixed in the connecting rod of the knock plate bottom surface and penetrates the stepped hole;Fixed in the jacking plate of the connecting rod bottom end;And reset spring is sleeved in the connecting rod, reset spring is located between support seat and jacking plate;In the utility model, additional vibration auxiliary structure consisting of hammering type electromagnetic vibrator, knock plate, connecting rod, jacking plate and reset spring, solve the problem that when the pump cover of higher viscosity material or complex structure is cast in traditional mould, slurry flow resistance is high, difficult to fill entire cavity, and metal liquid is easy to exist bubble, oxidation slag influence casting quality.

Description

Technical Field

[0001] This utility model belongs to the field of casting mold technology, specifically relating to a water pump cover casting mold. Background Technology

[0002] Pumps are mechanical devices and come in many types. They are mainly used to transport liquids or gases, including centrifugal pumps, plunger pumps, diaphragm pumps, screw pumps, etc. Each type of pump has its specific uses and applicable scenarios, and the pump cover is one of the important components of the pump.

[0003] Currently, the production of water pump covers is mainly carried out through casting molds. Casting molds refer to the molds used to form castings in the casting process. A mold with the same shape and structure as the part is made in advance using other easily formable materials. Then, the mold is placed in a sand mold to form a cavity with the same dimensions as the part. A fluid liquid is then poured into the cavity. After the liquid cools and solidifies, a part with the same shape and structure as the mold is formed.

[0004] The casting mold for the pump cover mainly includes an upper mold and a lower mold. The upper mold is powered by a hydraulic cylinder to facilitate mold closing and opening, and the slurry is injected into the cavity of the lower mold to form the mold.

[0005] The applicant found that in actual use, traditional casting molds only fill the entire cavity with slurry through specially designed flow channels. Even so, for some processing scenarios, such as materials with high viscosity or pump covers with complex structures, the flow resistance of the slurry is high, making it difficult to fill the entire cavity. Air bubbles and oxide slag in the molten metal also affect the quality of the casting.

[0006] To address the aforementioned problems, this application proposes a water pump cover casting mold. Utility Model Content

[0007] To address the aforementioned problems in the existing technology, this utility model provides a water pump cover casting mold, which is convenient to use and has high processing precision.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a water pump cover casting mold, comprising a base plate, a top plate fixed above the base plate by a first support column, an upper template movably disposed below the top plate, a hydraulic cylinder fixed to the top surface of the top plate to drive the upper template to rise and fall, and a lower template disposed on the top of the base plate by a support assembly. The upper template has a flow channel, the lower template has a cavity, and the support assembly includes a second support column fixed to the top surface of the base plate and a support base fixed to the top of the second support column. The support base has a stepped hole; further comprising: A hammer-type electromagnetic vibrator is installed on the bottom surface of the support base; A striking plate disposed within the stepped hole; A connecting rod fixed to the bottom surface of the striking plate and passing through the stepped hole; A lifting plate fixed to the bottom end of the connecting rod, the lifting plate being directly opposite the hammer head of the hammer-type electromagnetic vibrator; and A return spring is sleeved on the connecting rod, and the return spring is located between the support base and the lifting plate.

[0009] Preferably, the outer wall of the connecting rod fits against the inner wall of the stepped hole.

[0010] Preferably, two sets of the second support columns are symmetrically fixed to the top surface of the base plate, and multiple sets of the second support columns in the same set are evenly distributed.

[0011] Preferably, it further includes: Two sets of symmetrically distributed, hinged to the support base, rotating screws; A limiting block fixed to the lower template, wherein the limiting block is provided with a limiting notch for the flipping screw to pass through; and A wing nut is installed on the extended end of the reversing screw by means of threaded engagement.

[0012] Preferably, it further includes: The positioning blocks are fixed diagonally to the top of the support base, and the bottom surface of the lower template has a positioning groove that matches the positioning blocks.

[0013] Preferably, it further includes: Positioning posts are symmetrically fixed at both ends of the bottom surface of the upper template, and positioning holes are provided on the lower template for the positioning posts to pass through.

[0014] Preferably, there are four first support columns distributed diagonally.

[0015] Preferably, it further includes: The guide columns are fixed diagonally to the top surface of the upper template, and the guide columns penetrate the top plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are: In this utility model, a vibration auxiliary structure consisting of a hammer-type electromagnetic vibrator, a striking plate, a connecting rod, a lifting plate, and a return spring is added. This solves the problems in traditional molds where, when casting materials with high viscosity or pump covers with complex structures, the slurry flow resistance is high, making it difficult to fill the entire cavity, and bubbles and oxide slag in the molten metal easily affect the quality of the casting.

[0017] Other additional advantages and benefits of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the support base in this utility model; Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the diagram; Figure 4 This utility model Figure 1 Enlarged structural diagram at point B in the diagram; Figure 5 This utility model Figure 1 A magnified structural diagram at point C in the diagram.

[0019] In the diagram: 1. Base plate; 2. First support column; 3. Top plate; 4. Upper template; 41. Flow channel; 42. Guide column; 5. Hydraulic cylinder; 6. Lower template; 61. Cavity; 62. Positioning groove; 63. Positioning hole; 7. Support assembly; 71. Second support column; 72. Support base; 721. Stepped hole; 722. Positioning block; 8. Hammer-type electromagnetic vibrator; 9. Striking plate; 10. Connecting rod; 11. Lifting plate; 12. Return spring; 13. Turning screw; 14. Limiting block; 141. Limiting notch; 15. Wing nut; 16. Positioning column. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-5This utility model provides the following technical solution: a water pump cover casting mold, including a base plate 1, a top plate 3 supported and fixed above the base plate 1 by a first support column 2, an upper template 4 movably disposed below the top plate 3, a hydraulic cylinder 5 fixed to the top surface of the top plate 3 to drive the upper template 4 to rise and fall, and a lower template 6 disposed on the top of the base plate 1 by a support assembly 7. The upper template 4 is provided with a flow channel 41, and the lower template 6 is provided with a cavity 61. The support assembly 7 includes a second support column 71 fixed to the top surface of the base plate 1 and a support seat 72 fixed to the top of the second support column 71. The support seat 72 is provided with a stepped hole 721. It also includes: a hammer-type electromagnetic vibrator 8 disposed on the bottom surface of the support seat 72, a striking plate 9 disposed in the stepped hole 721, a connecting rod 10 fixed to the bottom surface of the striking plate 9 and passing through the stepped hole 721, a lifting plate 11 fixed to the bottom end of the connecting rod 10, and a return spring 12 sleeved on the connecting rod 10.

[0022] Furthermore, by Figure 1 and Figure 2 As shown in this embodiment, the lifting plate 11 is directly opposite the hammer head of the hammer-type electromagnetic vibrator 8, and the return spring 12 is located between the support base 72 and the lifting plate 11. With the above scheme, when in use, firstly, the hydraulic cylinder 5 is started, driving the upper mold plate 4 to move downward until it is precisely closed with the lower mold plate 6, so that the flow channel 41 of the upper mold plate 4 and the cavity 61 of the lower mold plate 6 form a closed casting space, which is ready for subsequent pouring.

[0023] Next, the molten metal is injected into the cavity 61 through the flow channel 41. During and after the injection of the molten metal, the hammer-type electromagnetic vibrator 8 starts to work. The hammer head of the hammer-type electromagnetic vibrator 8 will continuously hammer the lifting plate 11 directly above. After the lifting plate 11 is subjected to the impact force, the force is transmitted to the striking plate 9 through the connecting rod 10, so that the striking plate 9 moves upward in the stepped hole 721 and strikes the lower template 6.

[0024] The vibration generated by the hammering is transmitted to the lower mold plate 6 and the molten metal in the cavity 61. The vibration can promote the full flow of the molten metal and fill every corner of the cavity 61, effectively avoiding casting defects such as porosity and shrinkage caused by insufficient fluidity of the molten metal. At the same time, the vibration can also help the gas in the molten metal to escape and the oxide slag to float, improving the density of the casting.

[0025] When the hammer head of the hammer-type electromagnetic vibrator 8 returns to its original position, the return spring 12 sleeved on the connecting rod 10 will play a role. The return spring 12 generates elastic force due to the previous compression, which pushes the lifting plate 11 to move downward, and then drives the striking plate 9 back to the initial position in the stepped hole 721 through the connecting rod 10, preparing for the next hammer strike. This process is repeated to ensure the continuity of the vibration process.

[0026] After the molten metal in the cavity 61 cools and solidifies to form the water pump cover casting, the hydraulic cylinder 5 drives the upper template 4 to move upward, thus opening the mold.

[0027] Subsequently, the hammer-type electromagnetic vibrator 8 continues to work for a period of time. Through the above-mentioned vibration transmission method, the casting and the lower mold plate 6 are loosened. At the same time, during the vibration process, the movement of the striking plate 9 and the lifting plate 11 will also indirectly generate a certain upward pushing force on the casting, which will help the casting separate from the lower mold plate 6 and facilitate the subsequent removal of the casting.

[0028] Once the casting has completely solidified and separated smoothly from the lower mold 6, stop the operation of the hammer-type electromagnetic vibrator 8, and the formed water pump cover casting can be removed from the cavity 61 of the lower mold 6, completing one casting operation.

[0029] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, the outer wall of the connecting rod 10 is fitted with the inner wall of the stepped hole 721. With the above solution, when the striking plate 9, the connecting rod 10, and the lifting plate 11 move up and down due to the hammering force and the elastic force of the return spring 12 during use, the inner wall of the stepped hole 721 will constrain the connecting rod 10 to prevent it from shifting laterally or shaking. This ensures that the striking plate 9 always moves along the axial direction of the stepped hole 721, ensuring that the striking position of the striking plate 9 on the support seat 72 is stable, thereby enabling the vibration energy to be accurately transmitted to the lower template 6 and the molten metal in the cavity 61, improving the vibration degassing and shrinkage compensation effect.

[0030] Preferably, by Figure 1 As shown in this embodiment, two sets of second support columns 71 are symmetrically fixed to the top surface of the base plate 1, and multiple second support columns 71 in the same set are evenly distributed. After adopting the above scheme, the support stability and load-bearing capacity are significantly improved during use. The two sets of symmetrically distributed second support columns 71 can evenly distribute the weight of the support seat 72, the lower template 6 and the molten metal in the cavity 61 onto the base plate 1, avoiding deformation of the base plate 1 or support component 7 due to concentrated force. The multiple second support columns 71 evenly distributed in the same set further enhance this dispersion effect, making the support seat 72 more stable in its overall structure when it bears the pressure of the lower template 6 and the impact force brought by vibration transmission, and less prone to tilting or shaking, providing a solid foundation for the casting process.

[0031] Preferably, by Figure 1 and Figure 3As shown, this embodiment also includes: two sets of symmetrically distributed flip screws 13 hinged to the support base 72, a limiting block 14 fixed to the lower template 6, and a wing nut 15 installed on the protruding end of the flip screw 13 by thread engagement. The limiting block 14 is provided with a limiting notch 141 for the flip screw 13 to pass through. With the above scheme, when installing the lower template 6, the lower template 6 is first placed on the top of the support base 72, and then the flip screw 13 is rotated. Since the flip screw 13 is hinged to the support base 72, it can rotate around the hinge point as the axis until the protruding end of the flip screw 13 passes through the limiting notch 141 of the limiting block 14. At this time, the limiting notch 141 forms a lateral limit on the flip screw 13 to prevent it from shifting during subsequent vibration.

[0032] Subsequently, the wing nut 15 is installed on the extended end of the flip screw 13 by screwing it in, and the wing nut 15 is continuously tightened. As the wing nut 15 is tightened, it will fit tightly against the limit block 14. The locking force of the thread will firmly connect the limit block 14 and the flip screw 13, thereby stably fixing the lower template 6 and the support base 72 together.

[0033] After unscrewing the wing nut 15, the lower template 6 can be removed, making it convenient to disassemble, clean, or replace the lower template 6, thus improving maintenance efficiency.

[0034] Preferably, by Figure 1 and Figure 4 As shown, this embodiment also includes: a positioning block 722 diagonally fixed to the top of the support base 72, and a positioning groove 62 adapted to the positioning block 722 is provided on the bottom surface of the lower template 6. With the above solution, when the lower template 6 is installed, the positioning block 722 will be embedded in the positioning groove 62, providing a clear positioning reference for the placement of the lower template 6. Since the positioning block 722 is diagonally distributed, this diagonal positioning method can constrain the lower template 6 from two mutually perpendicular directions, effectively preventing the lower template 6 from shifting or misaligning on the support base 72, ensuring that the lower template 6 is quickly and accurately installed in the preset position, and greatly improving the efficiency of mold assembly.

[0035] Preferably, by Figure 1 and Figure 5As shown, this embodiment also includes: positioning posts 16 symmetrically fixed at both ends of the bottom surface of the upper template 4, and positioning holes 63 for the positioning posts 16 to pass through on the lower template 6. With the above solution, when the hydraulic cylinder 5 drives the upper template 4 to move downward and close with the lower template 6, the positioning posts 16 will be inserted into the positioning holes 63 first. The precise cooperation between the two guides the mold closing process, which can effectively prevent the upper template 4 and the lower template 6 from being misaligned due to the driving deviation of the hydraulic cylinder 5 or other external forces. This ensures that the flow channel 41 of the upper template 4 and the cavity 61 of the lower template 6 are precisely connected to form a closed and dimensionally accurate casting space, providing a basic guarantee for the forming accuracy of the casting.

[0036] Preferably, by Figure 1 As shown in this embodiment, there are four first support columns 2 distributed diagonally. After adopting the above scheme, when in use, the four diagonally distributed first support columns 2 form a stable support structure for the top plate 3, which can evenly distribute the weight of the top plate 3 and components such as the hydraulic cylinder 5 installed on the top plate 3 onto the bottom plate 1.

[0037] This distribution method utilizes the mechanical stability of the diagonal to effectively resist the possible tilting or swaying of the top plate 3 during the load-bearing process, providing a solid foundation support for the hydraulic cylinder 5 to drive the upper template 4 to rise and fall, ensuring the precise movement trajectory of the upper template 4, and guaranteeing the stability of the mold closing and opening actions.

[0038] Preferably, by Figure 1 As shown, in this embodiment, it also includes: guide columns 42 diagonally fixed to the top surface of the upper template 4, and the guide columns 42 penetrate the top plate 3. After adopting the above solution, when the hydraulic cylinder 5 drives the upper template 4 to move up and down, the guide columns 42 will slide synchronously along the channel penetrating the top plate 3.

[0039] Because the guide pillars 42 are diagonally distributed, they can form a rigid constraint on the movement trajectory of the upper template 4 from two mutually perpendicular directions, effectively counteracting the lateral offset or rotational tendency that may occur during the lifting and lowering process of the upper template 4. This makes the lifting and lowering action of the upper template 4 more stable and precise, further ensuring the alignment accuracy when closing with the lower template 6, and avoiding the deviation between the flow channel 41 and the cavity 61 caused by the shaking of the upper template 4, thus providing double protection for the dimensional accuracy of the casting.

[0040] It should be noted that the hydraulic cylinder 5 and the hammer-type electromagnetic vibrator 8 are both commercially available conventional devices with built-in power switches. Those skilled in the art can make conventional selections according to their needs. Their working principles are common knowledge known to those skilled in the art and have been fully disclosed in the prior art, so they will not be elaborated on further in this article.

[0041] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0042] Components not described in detail in this article are existing technologies.

[0043] The working principle and usage process of this utility model: When using the casting mold of this utility model, firstly, the hydraulic cylinder 5 is started, driving the upper mold plate 4 to move downward until it precisely closes with the lower mold plate 6, so that the flow channel 41 of the upper mold plate 4 and the cavity 61 of the lower mold plate 6 form a closed casting space, which is ready for subsequent pouring. Next, the molten metal is injected into the cavity 61 through the flow channel 41. During and after the injection of the molten metal, the hammer-type electromagnetic vibrator 8 starts to work. The hammer head of the hammer-type electromagnetic vibrator 8 will continuously hammer the lifting plate 11 directly above. After the lifting plate 11 is subjected to the impact force, the force is transmitted to the striking plate 9 through the connecting rod 10, so that the striking plate 9 moves upward in the stepped hole 721 and strikes the lower template 6. The vibration generated by the hammering will be transmitted to the lower mold plate 6 and the molten metal in the cavity 61. The vibration can promote the full flow of the molten metal and fill all corners of the cavity 61, effectively avoiding casting defects such as porosity and shrinkage caused by insufficient fluidity of the molten metal. At the same time, the vibration can also help the gas in the molten metal to escape and the oxide slag to float, improving the density of the casting. When the hammer head of the hammer-type electromagnetic vibrator 8 returns to its original position, the return spring 12 sleeved on the connecting rod 10 will play a role. The return spring 12 generates elastic force due to the previous compression, which pushes the lifting plate 11 to move downward, and then drives the striking plate 9 back to the initial position in the stepped hole 721 through the connecting rod 10, preparing for the next hammer strike. This process is repeated to ensure the continuity of the vibration process. After the molten metal in the cavity 61 cools and solidifies to form the water pump cover casting, the hydraulic cylinder 5 drives the upper template 4 to move upward to open the mold. Subsequently, the hammer-type electromagnetic vibrator 8 continues to work for a period of time. Through the above vibration transmission method, the casting and the lower mold plate 6 are loosened. At the same time, during the vibration process, the movement of the striking plate 9 and the lifting plate 11 will also indirectly generate a certain upward pushing force on the casting, which will help the casting separate from the lower mold plate 6 and facilitate the subsequent removal of the casting. Once the casting has completely solidified and separated smoothly from the lower mold 6, stop the operation of the hammer-type electromagnetic vibrator 8, and the formed water pump cover casting can be removed from the cavity 61 of the lower mold 6, completing one casting operation.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water pump cover casting mold, comprising a bottom plate (1), a top plate (3) supported and fixed above the bottom plate (1) by a first support column (2), an upper mold plate (4) movably arranged below the top plate (3), a hydraulic cylinder (5) fixed to the top surface of the top plate (3) to drive the upper mold plate (4) to ascend and descend, and a lower mold plate (6) arranged on the top of the bottom plate (1) by a support assembly (7), wherein the upper mold plate (4) is provided with a runner (41), and the lower mold plate (6) is provided with a cavity (61), characterized in that, The support assembly (7) includes a second support column (71) fixed to the top surface of the base plate (1) and a support base (72) fixed to the top of the second support column (71), the support base (72) being provided with a stepped hole (721); it also includes: A hammer-type electromagnetic vibrator (8) is installed on the bottom surface of the support base (72). A striking plate (9) is provided in the stepped hole (721); A connecting rod (10) is fixed to the bottom surface of the striking plate (9) and passes through the stepped hole (721). A lifting plate (11) is fixed to the bottom end of the connecting rod (10), the lifting plate (11) being directly opposite the hammer head of the hammer-type electromagnetic vibrator (8); and A return spring (12) is sleeved on the connecting rod (10), and the return spring (12) is located between the support base (72) and the lifting plate (11).

2. The water pump cover casting mold according to claim 1, characterized in that: The outer wall of the connecting rod (10) is attached to the inner wall of the stepped hole (721).

3. The water pump cover casting mold according to claim 1, characterized in that: Two sets of the second support columns (71) are symmetrically fixed to the top surface of the base plate (1), and multiple sets of the second support columns (71) in the same set are evenly distributed.

4. The water pump cover casting mold according to claim 1, characterized in that: Also includes: Two sets of symmetrically distributed and hinged to the support base (72) are rotating screws (13); A limiting block (14) fixed to the lower template (6), and the limiting block (14) is provided with a limiting notch (141) through which the flipping screw (13) passes; and The wing nut (15) is installed on the extended end of the reversing screw (13) by means of thread engagement.

5. A water pump cover casting mold according to claim 1, characterized in that: Also includes: A positioning block (722) is fixed diagonally to the top of the support base (72), and a positioning groove (62) adapted to the positioning block (722) is provided on the bottom surface of the lower template (6).

6. A water pump cover casting mold according to claim 1, characterized in that: Also includes: Positioning posts (16) are symmetrically fixed at both ends of the bottom surface of the upper template (4), and positioning holes (63) are provided on the lower template (6) for the positioning posts (16) to pass through.

7. A water pump cover casting mold according to claim 1, characterized in that: The first support column (2) has four diagonally distributed columns.

8. A water pump cover casting mold according to claim 1, characterized in that: Also includes: The guide post (42) is fixed diagonally to the top surface of the upper template (4), and the guide post (42) penetrates the top plate (3).

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