A high-precision air duct connection flange casting mold

Abstract

The utility model provides a high-precision air duct connection flange casting forming mold, comprising a top plate, an upper mold, a lower mold, an ejector plate and a bottom plate, side core pulling components are arranged on both sides of the upper mold and the lower mold, a forming shaft for forming a sleeve hole is fixedly arranged on the lower mold, the upper mold, the lower mold and the side core pulling components form a cavity for forming a flange body, the side core pulling component is used to form a cylindrical body and a limiting protrusion, the lower mold is used to form a cavity at the flange plate, and a plurality of slag collecting grooves are also opened on the lower mold, and the slag collecting grooves are arranged in a ring array on the outside of the cavity. By setting the slag collecting grooves, the metal solution that first enters the cavity can be accommodated, and the metal solution with pores and residues can enter the slag collecting grooves, and the cavity is preheated at the same time to reduce the problem of cold shut.

Description

Technical Field

[0001] The utility model relates to a casting mold, in particular to a high-precision air duct connecting flange casting molding mold. Background Art

[0002] like Figure 1 As shown, a flange includes a flange body 9, a sleeve hole 91 is opened in the middle of the flange body 9, and the flange body 9 is composed of a flange plate 92, a cylindrical body 93 and a head ring 94 connected in sequence. Two limiting protrusions 95 are also arranged on the cylindrical body 93.

[0003] At present, a Chinese patent with announcement number CN207119745U discloses a flange mold, including an upper mold, an outer mold and a lower mold. The upper mold, the outer mold and the lower mold group form a cavity in the shape of a flange. The upper mold is provided with a casting hole, and the molten liquid metal enters the cavity from the casting hole. The lower mold is also provided with an ejection mechanism for pushing the flange out of the cavity. The formed flange is pushed out by the ejection mechanism, which facilitates the removal of the flange.

[0004] The above patent still has shortcomings. During the casting process, the molten metal liquid that first enters the cavity will directly contact the mold. When the high-temperature molten metal liquid directly contacts the inner wall of the mold cavity, the temperature of the molten metal will directly decrease, resulting in poor fluidity of the molten metal liquid, which can easily cause cold shut problems in the casting. At the same time, the molten metal liquid that first enters the cavity is easily mixed with gas and residue and enters the cavity, which can cause problems such as pores and slag inclusions in the casting, affecting the performance of the product. Utility Model Content

[0005] In view of this, the utility model aims to provide a high-precision air duct connection flange casting mold, which has the function of solving the cold shut problem, the air hole problem and the slag inclusion problem.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a high-precision air duct connecting flange casting mold, including a top plate, an upper mold, a lower mold, an ejector plate and a bottom plate, side core pulling assemblies are provided on both sides of the upper mold and the lower mold, and a forming shaft for forming a sleeve hole is fixedly provided on the lower mold. The upper mold, the lower mold and the side core pulling assembly form a cavity for forming a flange body, the side core pulling assembly is used to form a cylindrical body and a limiting protrusion, the lower mold is used to form a cavity at the flange plate, and a plurality of slag collecting grooves are also provided on the lower mold, and the slag collecting grooves are arranged in a ring array on the outside of the cavity.

[0007] Through the above technical means, a slag collecting tank is set up to accommodate the metal solution that first enters the cavity, so that the metal solution with pores and residues enters the slag collecting tank, and the cavity is preheated at the same time to reduce the problem of cold shut.

[0008] Preferably, a connecting groove is provided between the slag collecting grooves, and a gas outlet groove is provided at the side end of the slag collecting groove.

[0009] Through the above technical means, the slag collecting tanks are connected through the connecting groove, so that the metal solution is evenly distributed in the slag collecting tank. By setting the air outlet groove, the metal liquid is prevented from discharging the cavity gas during the filling process to avoid the generation of bubbles.

[0010] Preferably, the side core pulling assembly includes a power source and a side pulling block, a limiting slide groove is provided on the lower mold, the side pulling block is slidably matched with the limiting slide groove, a molding block with a molding cylindrical body and a limiting protrusion is provided on the top of the side pulling block, and the tail of the side pulling block is connected to the output shaft of the power source.

[0011] By means of the above technical means, the sliding accuracy of the side drawer block is increased through the sliding cooperation between the limit slider and the side drawer block.

[0012] Preferably, the power source includes a linear cylinder, which is fixedly mounted on the lower mold. A lever is also fixedly mounted on the output shaft of the linear cylinder. A pair of travel switches are mounted on the side ends of the linear cylinder. A convex ring is mounted on the lever, and the convex ring is used to trigger the travel switch.

[0013] Through the above technical means, the travel switch is driven by the lever, so that an electrical signal is sent to the device that drives the ejection plate to move, thereby preventing the flange body from interfering with the side withdrawal block during ejection.

[0014] Preferably, an oblique abutment plate is further provided on the upper die, an oblique abutment surface is provided on the side drawer block, and the oblique abutment plate abuts against the oblique abutment surface to tightly abut the two side drawer blocks.

[0015] Through the above technical means, through the cooperation between the inclined abutment plate and the inclined abutment surface, the side drawer block can be molded in place when the upper mold, the lower mold and the side drawer block are molded, preventing gaps in the flange body when the side drawer block is not molded in place, thereby reducing the production of defective products.

[0016] Preferably, the ejector plate comprises an ejector plate 1 and an ejector plate 2, the ejector plate 1 is provided with a plurality of ejector rods 1, the bottom of the slag collecting trough is provided with a plurality of ejector holes 1, and the ejector rods 1 are slidably arranged in the ejector holes 1.

[0017] Through the above technical means, by setting the ejection hole at the bottom of the slag collecting trough, only the waste in the slag collecting trough needs to bear the ejection force during ejection. When the flange body and the lower mold are too tightly adhered, the ejector rod leaves an ejection mark on the flange body, thereby increasing the surface finish of the flange body.

[0018] Preferably, the ejection plate 2 is further provided with a plurality of ejector rods 2, the lower mold is further provided with a plurality of ejection holes 2, the ejection holes 2 extend into the cavity, and the ejector rods 2 are slidably arranged in the ejection holes 2.

[0019] Through the above technical means, by setting the second push rod and making the second push rod push out of the flange body, when the waste in the slag trough adheres to the end of the first push rod and cannot fall off, the auxiliary flange body falls off, thereby increasing the operating stability of the equipment.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. By setting up a slag collecting trough, the metal solution that enters the cavity first can be accommodated, so that the metal solution with pores and residues can enter the slag collecting trough, and the cavity can be preheated at the same time to reduce the problem of cold shut. By setting up an air outlet groove, the metal liquid can be prevented from discharging the cavity gas during the filling process to avoid the generation of bubbles.

[0022] 2. By setting the ejection hole 1 at the bottom of the slag collecting tank, only the waste in the slag collecting tank needs to bear the ejection force during ejection. By setting the ejector rod 2 and making the ejector rod 2 eject the flange body, the flange body is assisted to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the flange body;

[0024] Figure 2 It is a structural schematic diagram of an embodiment;

[0025] Figure 3 It is a schematic diagram of mold opening of an embodiment;

[0026] Figure 4 A partial schematic diagram of an embodiment Figure 1 ;

[0027] Figure 5 A partial schematic diagram of an embodiment Figure 2 ;

[0028] Figure 6 It is a structural schematic diagram of the lower mold;

[0029] Figure 7 It is a structural schematic diagram of the side core pulling assembly;

[0030] Figure 8 This is a schematic diagram of the structure of the upper mold.

[0031] Figure numerals: 1. top plate; 11. oblique abutment plate; 2. upper mold; 3. lower mold; 31. slag collecting groove; 32. connecting groove; 33. air outlet groove; 34. limiting slide groove; 4. ejector plate; 41. ejector plate one; 411. ejector rod one; 42. ejector plate two; 421. ejector rod two; 43. ejector hole one; 44. ejector hole two; 5. bottom plate; 6. side core pulling assembly; 61. power source; 611. linear cylinder; 62. side pulling block; 621. forming block; 622. oblique abutment surface; 63. lever; 631. convex ring; 64. travel switch; 7. cavity; 9. flange body; 91. sleeve hole; 92. flange plate; 93. cylindrical body; 94. head ring; 95. limiting convex block. DETAILED DESCRIPTION

[0032] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0033] A high-precision air duct connection flange casting molding die, comprising a top plate 1, an upper die 2, a lower die 3, an ejector plate 4 and a bottom plate 5, the upper die 2 is embedded in the top plate 1, and side core pull assemblies 6 are arranged on both sides of the upper die 2 and the lower die 3, and a molding shaft for molding a sleeve hole 91 is fixedly arranged on the lower die 3, the upper die 2, the lower die 3, and the side core pull assembly 6 form a cavity 7 for molding a flange body 9, the side core pull assembly 6 is used to mold a cylindrical body 93 and two limiting protrusions 95, the lower die 3 is used to mold the cavity 7 at the flange 92, and a flow channel is opened in the upper die 2 The molten metal is injected into the cavity 7 from the runner, and the solidified metal in the runner needs to be removed by cutting. A plurality of slag collecting grooves 31 are also provided on the lower mold 3. The slag collecting grooves 31 are arranged in a ring array on the outside of the cavity 7. When the molten metal enters the cavity 7, it first flows into the slag collecting grooves 31, so that the molten metal with pores and residues enters the slag collecting grooves 31. After the flange body 9 is formed and removed, the defective metal in the slag collecting grooves 31 can be cut out. The molten metal that first enters the cavity 7 will also preheat the inner wall of the cavity 7 to reduce the problem of cold shut.

[0034] A connecting groove 32 is also provided between the slag collecting grooves 31, and the connecting groove 32 connects the slag collecting grooves 31. When the molten metal enters the slag collecting grooves 31, it will be evenly distributed to prevent the slag collecting grooves 31 from failing due to uneven injection of the molten metal. An air outlet groove 33 is also provided at the side end of the slag collecting groove 31 to discharge the gas in the cavity 7 to avoid bubbles generated inside the metal liquid after solidification.

[0035] The side core pulling assembly 6 includes a power source 61 and a side pulling block 62. The power source 61 includes a linear cylinder 611. A limiting slide groove 34 is provided on the lower mold 3. The side pulling block 62 slides and cooperates with the limiting slide groove 34. A forming block 621 with a forming cylindrical body 93 and a limiting protrusion 95 is provided on the top of the side pulling block 62. The forming block 621 and the side pulling block 62 are positioned and fixed by screws and locating pins. The tail of the side pulling block 62 is connected to the output shaft of the power source 61. An inclined abutment plate 11 is also provided on the inner side of the top plate 1. An inclined abutment surface 622 is provided on the side pulling block 62. When the mold is closed, the inclined abutment plate 11 and the inclined abutment surface 622 are gradually abutted against each other, and the pulling blocks 62 on both sides are in place and fit tightly, thereby forming a complete cavity 7, preventing gaps in the flange body 9 when the side pulling block 62 is not in place for mold closing, and reducing the production of defective products.

[0036] The linear cylinder 611 is fixedly set on the lower mold 3, and a lever 63 is also fixedly set on the output shaft of the linear cylinder 611. The lever 63 faces the cylinder body of the linear cylinder 611. A pair of travel switches 64 are set on the side end of the cylinder head of the linear cylinder 611, and a convex ring 631 is set on the lever 63. When the linear cylinder 611 drives its output shaft to eject, the convex ring 631 triggers the travel switch 64 on the upper side. When the linear cylinder 611 drives its output rod to retract, the convex ring 631 triggers the travel switch 64 on the lower side, thereby providing an electrical signal for the cast iron machine, thereby preventing the flange body 9 from interfering with the side drawer block 62 during ejection.

[0037] The ejector plate 4 includes an ejector plate 41 and an ejector plate 42. The ejector plate 41 is provided with a plurality of ejector rods 411, and the ejector plate 42 is also provided with a plurality of ejector rods 421. The bottom of the slag collecting groove 31 is provided with a plurality of ejector holes 43. The ejector rods 411 are slidably arranged in the ejector holes 43. The lower mold 3 is also provided with a plurality of ejector holes 44. The ejector holes 44 extend into the cavity 7. The ejector rods 421 are slidably arranged in the ejector holes 44. When ejecting, the ejector rods 411 are ejected first, and the slag collecting groove is The waste in 31 is ejected together with the flange body 9, and then the second ejector rod 421 is ejected to separate the flange body 9 from the first ejector rod 411. The force point of the first ejector rod 411 is concentrated on the waste in the slag collecting tank 31 during ejection. At this time, the flange body 9 and the waste may stick to the first ejector rod 411, and then the second ejector rod 421 is used to support the flange body 9 to separate it from the first ejector rod 411. At this time, the flange body 9 is subjected to less force, so that only the ejection mark is left on the waste, thereby increasing the surface finish of the flange body 9.

[0038] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A high-precision air duct connection flange casting mold, comprising a top plate (1), an upper mold (2), a lower mold (3), an ejector plate (4) and a bottom plate (5), wherein: Side core pulling assemblies (6) are provided on both sides of the upper die (2) and the lower die (3); a forming shaft for forming a sleeve hole (91) is fixedly provided on the lower die (3); the upper die (2), the lower die (3) and the side core pulling assembly (6) form a cavity (7) for forming a flange body (9); the side core pulling assembly (6) is used to form a cylindrical body (93) and a limiting protrusion (95); the lower die (3) is used to form a cavity (7) at the flange plate (92); and a plurality of slag collecting grooves (31) are also provided on the lower die (3); the slag collecting grooves (31) are arranged in a ring array on the outside of the cavity (7).

2. The high-precision air duct connection flange casting mold according to claim 1 is characterized by: A connecting groove (32) is also provided between the slag collecting grooves (31), and a gas outlet groove (33) is also provided at the side end of the slag collecting groove (31).

3. The high-precision air duct connection flange casting mold according to claim 1 is characterized by: The side core pulling assembly (6) comprises a power source (61) and a side pulling block (62); a limiting slide groove (34) is provided on the lower mold (3); the side pulling block (62) is slidably matched with the limiting slide groove (34); a forming block (621) having a forming cylindrical body (93) and a limiting protrusion (95) is provided on the top of the side pulling block (62); and the tail of the side pulling block (62) is connected to the output shaft of the power source (61).

4. The high-precision air duct connection flange casting mold according to claim 3 is characterized by: The power source (61) comprises a linear oil cylinder (611), the linear oil cylinder (611) is fixedly arranged on the lower mold (3), a lever (63) is also fixedly arranged on the output shaft of the linear oil cylinder (611), a pair of travel switches (64) are arranged at the side ends of the linear oil cylinder (611), and a convex ring (631) is arranged on the lever (63), and the convex ring (631) is used to trigger the travel switch (64).

5. The high-precision air duct connection flange casting mold according to claim 3 is characterized by: The upper mold (2) is also provided with an inclined abutment plate (11), and the side drawer block (62) is provided with an inclined abutment surface (622). The inclined abutment plate (11) abuts against the inclined abutment surface (622) so that the two side drawer blocks (62) are tightly pressed together.

6. The high-precision air duct connection flange casting mold according to claim 1 is characterized by: The ejector plate (4) comprises an ejector plate (4) 1 and an ejector plate (4) 2, the ejector plate (4) 1 being provided with a plurality of ejector rods 1 (411), the bottom of the slag collecting tank (31) being provided with a plurality of ejector holes 1 (43), the ejector rods 1 (411) being slidably arranged in the ejector holes 1 (43).

7. The high-precision air duct connection flange casting mold according to claim 6 is characterized by: The ejection plate (4) is also provided with a plurality of ejector pins (421), and the lower mold (3) is also provided with a plurality of ejection holes (44). The ejection holes (44) extend into the cavity (7), and the ejector pins (421) are slidably disposed in the ejection holes (44).

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