A casting mold for mounting a flange

Abstract

The utility model relates to flange forming die technical field, and disclose a kind of installation flange's casting mould, it include: installation flange and casting mould, the casting mould includes with the lower die holder and upper die holder of relative opening and closing displacement, the lower die holder top center is embedded with lower die core;The rim of the installation flange that has been shaped is opened with multiple groups of residual liquid grooves around on the lower die core, and each group of residual liquid groove is away from the side of the installation flange that has been shaped and is opened with exhaust groove for with lower die core outside communication, the upper die core bottom is opened with multiple groups of residual liquid groove matched with the liquid guide groove.The installation flange's casting mould, after the metal liquid of casting enters between upper die core and lower die core, air in the forming space is discharged from exhaust groove through residual liquid groove and liquid guide groove, to improve the exhaust effect of casting mould when casting, improve the yield of installation flange.

Description

Technical Field

[0001] This utility model relates to the field of flange forming mold technology, specifically a casting mold for installing flanges. Background Technology

[0002] A flange is a disc-shaped part commonly used for connecting shafts. Some equipment and pipelines that require high tightness in their connections rely on flanges to ensure the tightness of the connection after fixation. Compared with ordinary welding methods, using flanges not only increases the fixing area of ​​the connection end, but also allows objects to be quickly connected on-site with bolts, greatly shortening the installation time. When maintenance is needed later, flanges can be quickly disassembled, improving the flexibility of connecting pipelines and equipment.

[0003] Flanges are widely used in industry, and therefore there are many varieties depending on their location and specific needs. When connecting metal objects with complex end faces, specially cast metal flanges are generally used for adaptation.

[0004] When casting flanges, two half mold frames are usually joined together to form a casting space at the joint. Then, molten metal is poured into the casting space through the casting gate to cool and solidify. However, in the existing technology, in order to prevent leakage, the casting space formed between the mold frames is tightly fitted around the edges. When the molten metal enters the casting gate, it will block the only external channel, which will easily lead to poor venting during the casting process. As a result, voids will form when the flange is cast due to gas obstruction, reducing the yield of flange casting. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a casting mold for mounting flanges, which solves the problems mentioned in the background.

[0006] This utility model provides the following technical solution: a casting mold for mounting flange, comprising: mounting flange and casting mold; The mounting flange includes a plate body, which irregularly protrudes around a center point to form a stepped interlocking platform. The center of the interlocking platform is integrally formed with a shaft interface that passes through it. A first bolt hole and a second bolt hole that pass through the interlocking platform are formed at the irregular edge of the interlocking platform. A third bolt hole that passes through the four corners of the plate body is formed at the four corners of the plate body. A positioning groove is formed at one edge of the plate body. An icon is formed on the plate body as an identifier. The bottom of the plate body is recessed with the center point as the center to form an insertion groove corresponding to the interlocking platform covering surface. The casting mold includes a lower mold frame and an upper mold frame with relative opening and closing displacement. A lower mold core is embedded in the center of the top of the lower mold frame. A liquid guide seat that cooperates with the lower mold core is embedded in front of the lower mold core at the top of the lower mold frame. Multiple sets of lower hole column molds are provided through the lower mold core from bottom to top. An upper mold core that cooperates with the lower mold core is embedded in the center of the bottom of the upper mold frame. A casting port that passes through the upper mold core is embedded in front of the upper mold core at the upper mold frame, and the bottom end of the casting port cooperates with the liquid guide seat. Multiple sets of upper hole column molds are provided through the upper mold core from top to bottom. The lower mold core has multiple sets of residual liquid grooves around the edge of the formed installation flange. Each set of residual liquid grooves has an exhaust groove on the side away from the formed installation flange for communicating with the outside of the lower mold core. The bottom of the upper mold core has multiple sets of liquid guiding grooves that cooperate with the residual liquid grooves. Positioning rods are provided at the four corners of the bottom of the upper mold frame, and positioning holes for docking with the positioning rods at the four corners of the top of the lower mold frame are provided.

[0007] Preferably, the bottom of the lower mold frame is provided with an ejector pin mechanism, and the left and right sides of the ejector pin mechanism are provided with second pressing grooves. The left and right sides of the upper mold frame are provided with first pressing grooves parallel to the second pressing grooves on the ejector pin mechanism.

[0008] Preferably, the lower mold core has a lower mold cavity for molding the bottom of the mounting flange, and the positions where the top of the lower hole column mold penetrates the lower mold core are all located within the lower mold cavity; The upper mold core is provided with an upper mold cavity for cooperating with the lower mold cavity, and the positions where the bottom of the upper hole column mold penetrates the upper mold core are all located within the range of the upper mold cavity.

[0009] Preferably, the lower mold core is provided with first pin holes on its left and right sides, and the upper mold frame is provided with first locking holes on its left and right sides corresponding to the positions of the first pin holes and connected to them by pins. The upper mold core has a second pin hole on its left and right sides, and the upper mold frame has a second locking hole on its left and right sides that corresponds to the position of the second pin hole and is connected to it by a pin.

[0010] Preferably, the liquid guide seat includes a retaining seat embedded in the lower mold frame and connected to it by a locking pin. The retaining seat tapers along its edge near the top to form a stepped insertion platform on its surface. The insertion platform is inserted into the bottom of the casting gate. The insertion platform and the retaining seat together have a liquid receiving groove integrally connected to the casting gate. The lower mold core has a casting liquid channel that communicates with the casting gate through the liquid receiving groove.

[0011] Preferably, the lower mold core is provided with protruding limiting bosses at its four corners, and the upper mold core is recessed at its four corners to form limiting grooves that fit into the limiting bosses.

[0012] Preferably, the venting groove is Z-shaped, with one end of the Z connected to the interior of the residual liquid groove and the other end connected to the exterior of the lower mold core, and the depth of the venting groove is 0.01-0.08mm.

[0013] Preferably, the casting port includes an insert that is embedded in and passes through the upper mold frame. The top of the insert expands outward to form a liquid inlet that connects with the casting equipment. A fixed hoop groove is provided in the neck of the insert that connects to the liquid inlet. A disassembly sleeve is fitted around the outer edge of the fixed hoop groove. The outer peripheral wall of the disassembly sleeve has two through pin holes. The outer wall in front of the upper mold frame has a locking hole corresponding to the position of the pin holes and connected to the locking pin thereon. The inner wall of the fixed groove forms a rib between the two pin holes, and the end of the locking pin that passes through the pin holes protrudes into the fixed groove on both sides of the rib.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The casting mold for the mounting flange, through the residual liquid groove on the lower mold core surrounding the mounting flange and the liquid guiding groove on the upper mold core, works together to allow the molten metal to enter between the upper and lower mold cores. This allows the air inside the molding space to be discharged through the residual liquid groove and the liquid guiding groove from the venting groove, thereby improving the venting effect of the casting mold during casting and increasing the yield of the mounting flange.

[0015] 2. The casting mold for this mounting flange is designed so that, after the molten metal solidifies, some residue inevitably remains in the tubular inlet. By setting a detachable casting port, if the residual molten metal in the casting port is difficult to remove after solidification after the mounting flange is cast, the casting port can be directly replaced, thus avoiding affecting the casting operation of the next set of mounting flanges and improving the demolding efficiency of the mounting flange. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the mold opening and closing structure of this utility model; Figure 3 This is a top view of the mounting flange structure of this utility model; Figure 4 This is a bottom view of the mounting flange structure of this utility model; Figure 5 This is a top view of the lower mold frame structure of this utility model; Figure 6This is a schematic diagram of the disassembled structure of the lower mold frame of this utility model; Figure 7 This is a schematic diagram of the lower mold core structure of this utility model; Figure 8 This is a bottom view of the upper mold frame structure of this utility model; Figure 9 This is a schematic diagram of the disassembled structure of the upper mold frame of this utility model; Figure 10 This is a schematic diagram of the disassembled structure of the casting gate of this utility model; Figure 11 This is a partial cross-sectional structural diagram of the residual liquid tank of this utility model during venting.

[0017] In the diagram: 1. Mounting flange; 101. Plate; 102. Insertion platform; 103. Shaft interface; 104. First bolt hole; 105. Second bolt hole; 106. Third bolt hole; 107. Icon; 108. Positioning groove; 109. Insertion groove; 2. Lower mold frame; 3. Upper mold frame; 4. Ejector mechanism; 5. Casting gate; 51. Insertion nest; 52. Liquid inlet; 53. Fixed hoop groove; 54. Disassembly sleeve; 55. Pin hole; 6. Upper mold core; 7. Upper mold cavity; 8. Lower mold core; 9. Guide 91. Liquid base; 92. Insertion platform; 93. Liquid receiving groove; 10. Lower mold cavity; 11. Casting liquid channel; 12. Residual liquid groove; 13. Venting groove; 14. Liquid guiding groove; 15. Positioning rod; 16. Positioning hole; 17. First mold groove; 18. Second mold groove; 19. Lower hole column mold; 20. First pin hole; 21. First locking hole; 22. Limiting boss; 23. Limiting groove; 24. Upper hole column mold; 25. Locking hole; 26. Second pin hole; 27. Second locking hole. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-11 A casting mold for mounting a flange, comprising: mounting flange 1 and casting mold; The mounting flange 1 includes a plate 101. The plate 101 protrudes irregularly around its center point to form a stepped interlocking platform 102. The center of the interlocking platform 102 is integrally formed with a shaft interface 103 that passes through it. The irregular edge of the interlocking platform 102 forms a first bolt hole 104 and a second bolt hole 105 that pass through the interlocking platform 102. The four corners of the plate 101 form a third bolt hole 106 that passes through it. A positioning groove 108 is formed on the edge of the plate 101 near one side. An icon 107 is formed on the plate 101 as an identifier. The bottom of the plate 101 is recessed with the center point as the center to form an insertion groove 109 corresponding to the covering surface of the interlocking platform 102. The casting mold includes a lower mold base 2 and an upper mold base 3 with relative opening and closing displacement. A lower mold core 8 is embedded in the center of the top of the lower mold base 2. A liquid guide seat 9 that cooperates with the lower mold core 8 is embedded in front of the lower mold core 8 at the top of the lower mold base 2. Multiple sets of lower hole column molds 19 are provided through the lower mold core 8 from bottom to top. An upper mold core 6 that cooperates with the lower mold core 8 is embedded in the center of the bottom of the upper mold base 3. A casting port 5 that passes through the upper mold core 6 is embedded in front of the upper mold core 6 at the upper mold base 3, and the bottom end of the casting port 5 cooperates with the liquid guide seat 9. Multiple sets of upper hole column molds 24 are provided through the upper mold core 6 from top to bottom. Multiple sets of residual liquid grooves 12 are provided on the lower mold core 8 around the edge of the pre-formed mounting flange 1. Each set of residual liquid grooves 12 is provided with an exhaust groove 13 for communicating with the outside of the lower mold core 8 on the side away from the pre-formed mounting flange 1. Multiple sets of liquid guiding grooves 14 are provided at the bottom of the upper mold core 6 to cooperate with the residual liquid grooves 12. Positioning rods 15 are provided at the four corners of the bottom of the upper mold frame 3, and positioning holes 16 are provided at the four corners of the top of the lower mold frame 2 for docking with the positioning rods 15 at the bottom of the upper mold frame 3.

[0020] It should be noted that after the molten metal fills the forming space, an additional portion of the molten metal near the residual liquid tank 12 will flow into the residual liquid tank 12. This ensures that no void defects will be formed at the corners when the mounting flange 1 is cast. After the mounting flange 1 is formed and demolded, the solidified metal ingot in the residual liquid tank 12 will be demolded together with the mounting flange 1. The connection between the metal ingot and the mounting flange 1 corresponds to the thickness of the liquid guiding tank 14, which facilitates the cutting of the metal ingot.

[0021] The lower mold frame 2 is provided with an ejector pin mechanism 4 at its bottom. The ejector pin mechanism 4 has a second pressing groove 18 on both its left and right sides. The upper mold frame 3 has a first pressing groove 17 on its left and right sides that is parallel to the second pressing groove 18 on the ejector pin mechanism 4.

[0022] That is, by utilizing the cooperation between the second mold groove 18 and the first mold groove 17, during casting, they slide into the corresponding track set on the casting platform, further increasing the stability of the lower mold frame 2 and the upper mold frame 3 after they are closed.

[0023] The lower mold core 8 has a lower mold cavity 10 for installing the bottom of the flange 1, and the positions where the top of the lower hole column mold 19 penetrates the lower mold core 8 are all located within the range of the lower mold cavity 10. The upper mold core 6 has an upper mold cavity 7 for cooperating with the lower mold cavity 10, and the positions where the bottom of the upper hole column mold 24 penetrates the upper mold core 6 are all located within the range of the upper mold cavity 7.

[0024] The lower mold core 8 has first pin holes 20 on its left and right sides, and the upper mold frame 3 has first locking holes 21 on its left and right sides that correspond to the positions of the first pin holes 20 and are connected to them by pins. The upper mold core 6 has second pin holes 26 on its left and right sides, and the upper mold frame 3 has second locking holes 27 on its left and right sides, which correspond to the positions of the second pin holes 26 and are connected to them by pins.

[0025] That is, if a jamming occurs when the flange 1 is cast and demolded, the upper mold core 6 and the lower mold core 8 can be quickly removed to facilitate the removal of the upper hole column mold 24 and the lower hole column mold 19, thereby improving the demolding effect. At the same time, the next set of upper mold core 6 and lower mold core 8 can be replaced to continue casting, which improves the casting efficiency of the flange 1.

[0026] The liquid guide seat 9 includes a retaining seat 91 embedded in the lower mold frame 2 and connected to it by a locking pin. The retaining seat 91 tapers along its edge near the top to form a stepped insertion platform 92 on its surface. The insertion platform 92 is inserted into the bottom of the casting port 5. The insertion platform 92 and the retaining seat 91 together have a liquid receiving groove 93 integrally connected to the casting port 5. The lower mold core 8 has a casting liquid channel 11 that is connected to the casting port 5 through the liquid receiving groove 93.

[0027] That is, the liquid guide seat 9 and the casting port 5 are a pair of mutually inserting components. When the molten metal flows through the liquid guide seat 9 and solidifies and is difficult to remove, the liquid guide seat 9 can also be removed and replaced.

[0028] The lower mold core 8 has protruding limiting bosses 22 at its four corners, and the upper mold core 6 has recessed limiting grooves 23 at its four corners that fit into the limiting bosses 22.

[0029] The venting groove 13 is Z-shaped, with one end of the Z connected to the interior of the residual liquid groove 12 and the other end connected to the exterior of the lower mold core 8. The depth of the venting groove 13 is 0.01-0.08mm.

[0030] That is, the depth of the venting groove 13 is set within a certain range and is set in a Z-shape to form a barrier. After the air flows upward, the more viscous molten metal will be blocked in the residual liquid groove 12, thereby preventing the molten metal from overflowing to the outside of the mold.

[0031] Among them, the casting port 5 includes an insert nest 51 that is embedded and passes through the upper mold frame 3. The top of the insert nest 51 is expanded outward to form a liquid inlet 52 that is connected to the casting equipment. A fixed hoop groove 53 is provided in the neck of the insert nest 51 connected to the liquid inlet 52. A disassembly sleeve 54 is provided on the outer edge of the fixed hoop groove 53. The outer peripheral wall of the disassembly sleeve 54 has two through pin holes 55. The outer wall in front of the upper mold frame 3 has a locking hole 25 corresponding to the position of the pin holes 55 and connected to the locking pin thereon. The inner wall of the fixed groove 53 forms a rib between the two pin holes 55, and the end of the locking pin that passes through the pin holes 55 protrudes into the fixed groove 53 on both sides of the rib.

[0032] Normally, the molten metal in the mold needs to spread into the casting port 5 and remain there for a certain period of time to ensure that the internal casting space is full before it can solidify. At this time, the molten metal will inevitably remain in the casting port 5 after solidification. Since it is a closed tubular structure, the molten metal inside is difficult to clean after solidification and adhesion, and it will also affect the casting quality of the subsequent flange 1. Therefore, the casting port 5 is designed to be easy to replace, so that the molten metal residue in the casting port 5 can be cleaned slowly without affecting the subsequent flange 1 casting operation, thereby improving the efficiency of the flange 1 casting operation.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A casting mold for mounting a flange, characterized by, include: Install flange (1) and casting mold; The mounting flange (1) includes a plate (101), which protrudes irregularly around a center point to form a stepped interlocking platform (102) thereon. The interlocking platform (102) has an integrally formed shaft interface (103) through which it passes. The interlocking platform (102) has a first bolt hole (104) and a second bolt hole (105) through which it passes at irregular edges. The plate (101) has a third bolt hole (106) through which it passes at the four corners. The plate (101) has a positioning groove (108) near one side of the edge. The plate (101) has an icon (107) as an identifier. The bottom of the plate (101) is recessed with the center point as the center to form an insertion groove (109) corresponding to the covering surface of the interlocking platform (102). The casting mold includes a lower mold frame (2) and an upper mold frame (3) with relative opening and closing displacement. A lower mold core (8) is embedded in the center of the top of the lower mold frame (2). A liquid guide seat (9) that cooperates with the lower mold core (8) is embedded in the front of the lower mold core (8) at the top of the lower mold frame (2). Multiple sets of lower hole column molds (19) are provided through the lower mold core (8) from bottom to top. An upper mold core (6) that cooperates with the lower mold core (8) is embedded in the center of the bottom of the upper mold frame (3). A casting port (5) that passes through the upper mold core (6) is embedded in the front of the upper mold core (6) at the upper mold frame (3). The bottom end of the casting port (5) cooperates with the liquid guide seat (9). Multiple sets of upper hole column molds (24) are provided through the upper mold core (6) from top to bottom. The lower mold core (8) has multiple sets of residual liquid grooves (12) around the edge of the pre-formed mounting flange (1). Each set of residual liquid grooves (12) has an exhaust groove (13) for communicating with the outside of the lower mold core (8) on the side away from the pre-formed mounting flange (1). The bottom of the upper mold core (6) has multiple sets of liquid guiding grooves (14) that cooperate with the residual liquid grooves (12). The upper mold frame (3) has positioning rods (15) at the four corners of its bottom, and the lower mold frame (2) has positioning holes (16) at the four corners of its top for docking with the positioning rods (15) at the bottom of the upper mold frame (3).

2. A casting mold for mounting a flange according to claim 1, characterized in that The lower mold frame (2) is provided with an ejector pin mechanism (4) at its bottom. The ejector pin mechanism (4) is provided with a second pressure groove (18) on both its left and right sides. The upper mold frame (3) is provided with a first pressure groove (17) on its left and right sides that is parallel to the second pressure groove (18) on the ejector pin mechanism (4).

3. A casting mold for mounting a flange according to claim 1, characterized in that The lower mold core (8) is provided with a lower mold cavity (10) for installing the bottom of the flange (1), and the positions where the top of the lower hole column mold (19) penetrates the lower mold core (8) are all located within the range of the lower mold cavity (10). The upper mold core (6) is provided with an upper mold cavity (7) for cooperating with the lower mold cavity (10), and the bottom of the upper hole column mold (24) penetrating the upper mold core (6) is located within the range of the upper mold cavity (7).

4. A cast mold for mounting a flange according to claim 1, characterized in that, The lower mold core (8) has a first pin hole (20) on its left and right sides, and the upper mold frame (3) has a first locking hole (21) on its left and right sides that corresponds to the position of the first pin hole (20) and is connected to it by a pin. The upper mold core (6) has a second pin hole (26) on its left and right sides, and the upper mold frame (3) has a second locking hole (27) on its left and right sides that corresponds to the position of the second pin hole (26) and is connected to it by a pin.

5. A cast mold for mounting a flange according to claim 1, characterized in that, The liquid guide seat (9) includes a retaining seat (91) embedded in the lower mold frame (2) and connected to it by a locking pin. The retaining seat (91) tapers along the edge near the top to form a stepped insertion platform (92) on the surface. The insertion platform (92) is inserted into the bottom of the casting port (5). The insertion platform (92) together with the retaining seat (91) has a liquid receiving groove (93) integrally connected in the casting port (5). The lower mold core (8) has a casting liquid channel (11) connected to the casting port (5) through the liquid receiving groove (93).

6. The casting mold for mounting flanges according to claim 1, characterized in that, The lower mold core (8) has protruding limiting bosses (22) at its four corners, and the upper mold core (6) has recessed corners to form limiting grooves (23) that fit into the limiting bosses (22).

7. The casting mold for mounting flange according to claim 1, characterized in that, The venting groove (13) is Z-shaped, with one end of the Z connected to the interior of the residual liquid groove (12) and the other end connected to the exterior of the lower mold core (8). The depth of the venting groove (13) is 0.01-0.08 mm.

8. A casting mold for mounting flanges according to claim 1, characterized in that, The casting port (5) includes an insert (51) that is embedded in and passes through the upper mold frame (3). The top of the insert (51) is expanded outward to form a liquid inlet (52) that is connected to the casting equipment. A fixed hoop groove (53) is provided in the neck of the insert (51) that connects to the liquid inlet (52). A disassembly sleeve (54) is provided on the outer edge of the fixed hoop groove (53). The outer peripheral wall of the disassembly sleeve (54) has two through pin holes (55). The outer wall in front of the upper mold frame (3) has a locking hole (25) corresponding to the position of the pin hole (55) and connected to it by a locking pin. The inner wall of the fixed groove (53) forms a strip between the two pin holes (55), and the end of the locking pin that passes through the pin hole (55) protrudes into the fixed groove (53) on both sides of the strip.

Images