Exhaust structure of aluminum alloy low-pressure casting mold

Abstract

The utility model relates to the technical field of aluminum alloy low-pressure casting molds, and discloses an aluminum alloy low-pressure casting mold exhaust structure which comprises a lower mold, an upper mold is arranged at the top of the lower mold, an exhaust barrel is fixedly assembled at the top of the upper mold, an L-shaped frame is fixedly assembled at the top of the upper mold, and a plurality of exhaust holes are formed in the L-shaped frame. An adjusting plate is rotationally connected to the top of the inner wall of the L-shaped frame, a connecting pipe is fixedly assembled on the inner wall of the L-shaped frame, an air collecting bag is fixedly assembled at the end, away from the L-shaped frame, of the connecting pipe, and an electromagnetic valve air inlet pipe is fixedly assembled on the side face of the air collecting bag. Through cooperative use of an adjusting plate and a butt joint plate, an adjusting rod is used for driving a round rod to move, so that the round rod is used for driving the butt joint plate to adjust the height until the side face of the butt joint plate is away from the inner wall of a butt joint groove, and then the adjusting plate is rotated in the inner wall of an L-shaped frame, so that different dustproof plugs are assisted to be in butt joint with the inner wall of a connecting pipe; therefore, the dustproof plugs with different diameters are adjusted to be erected.

Description

Technical Field

[0001] The utility model relates to the technical field of low-pressure casting molds for aluminum alloys, and specifically relates to an exhaust structure for a low-pressure casting mold for aluminum alloys. Background Technique

[0002] The low-pressure casting mold for aluminum alloys is an important tool for producing various-shaped castings by using the low-pressure casting process. It has significant characteristics and advantages such as low cost, high production efficiency, strong adaptability, good surface finish, and high mechanical properties.

[0003] Installing an exhaust structure on the low-pressure casting mold for aluminum alloys helps to avoid problems that occur during the casting process, such as defects like oxidation inclusions and pores, thereby improving the internal quality and mechanical properties of the castings. During the low-pressure casting process of aluminum alloys, the design of the exhaust system of the mold directly affects the quality of the castings. If the gas inside the mold cannot be effectively discharged, it may cause defects such as pores and inclusions in the castings, and these defects will seriously affect the mechanical properties and service life of the castings. However, the traditional exhaust structure only installs a dust-proof plug at the exhaust port to use the dust-proof plug to prevent external impurities from affecting the stable casting inside the mold, but the traditional exhaust structure is difficult to adjust the diameter size of the exhaust port according to requirements, thus affecting the use efficiency of the device. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides an exhaust structure for a low-pressure casting mold for aluminum alloys to solve the problems raised in the above background technique.

[0005] The utility model provides the following technical scheme: an exhaust structure for a low-pressure casting mold for aluminum alloys, including a lower mold, an upper mold is arranged on the top of the lower mold, an exhaust cylinder is fixedly assembled on the top of the upper mold, an L-shaped frame is fixedly assembled on the top of the upper mold, a regulating plate is rotatably connected to the top of the inner wall of the L-shaped frame, a connecting pipe is fixedly assembled on the inner wall of the L-shaped frame, a gas collecting bag is fixedly assembled at one end of the connecting pipe away from the L-shaped frame, a solenoid valve inlet pipe is fixedly assembled on the side of the gas collecting bag, and a supporting air bag pad is fixedly assembled at the bottom of the inner wall of the lower mold, and the inner wall of the supporting air bag pad is communicated with the inner wall of the solenoid valve inlet pipe.

[0006] As a preferred technical scheme of the utility model, a dust-proof plug is fixedly sleeved on the inner wall of the regulating plate, the number of the dust-proof plugs is four, and the diameters of the inner walls of the four dust-proof plugs are all different. The four dust-proof plugs are evenly distributed in the inner wall of the regulating plate, and a docking groove is opened at the bottom of the regulating plate.

[0007] As a preferred technical solution of the present utility model, a cylinder is fixedly assembled at the top of the upper mold. A spring is fixedly connected to the bottom of the inner wall of the cylinder. The top of the spring is fixedly connected to a round rod, and the outer edge of the round rod is slidably sleeved with the inner wall of the cylinder. The top of the round rod is fixedly assembled with a docking plate, and the shape and size of the side surface of the docking plate are adapted to the shape and size of the inner wall of the docking groove.

[0008] As a preferred technical solution of the present utility model, an adjusting rod is slidably sleeved with the inner wall of the cylinder, and the side surface of the adjusting rod is fixedly assembled with the outer edge of the round rod.

[0009] As a preferred technical solution of the present utility model, an auxiliary plate is fixedly sleeved with the outer edge of the connecting pipe. A tension spring is fixedly connected to the side surface of the auxiliary plate. One end of the tension spring away from the auxiliary plate is fixedly connected to a push cylinder, and the inner wall of the push cylinder is slidably sleeved with the outer edge of the connecting pipe and the outer edge of the air collecting bag.

[0010] As a preferred technical solution of the present utility model, a solenoid valve exhaust pipe is fixedly assembled on the side surface of the lower mold. The inner wall of the solenoid valve exhaust pipe passes through the inner wall of the support air bag pad and is communicated with the inner wall of the solenoid valve intake pipe.

[0011] Compared with the prior art, the present utility model has the following beneficial effects:

[0012] 1. For the exhaust structure of the aluminum alloy low-pressure casting mold, through the combined use of the adjusting plate and the docking plate, the adjusting rod drives the round rod to move, so that the round rod drives the docking plate to adjust the height until the side surface of the docking plate is away from the inner wall of the docking groove. Then, rotate the adjusting plate in the inner wall of the L-shaped frame to assist different dust plugs to dock with the inner wall of the connecting pipe, so as to adjust the erection of dust plugs with different diameters.

[0013] 2. For the exhaust structure of the aluminum alloy low-pressure casting mold, through the combined use of the push cylinder and the air collecting bag, open the solenoid valve intake pipe and close the solenoid valve exhaust pipe. Then, slide the push cylinder along the outer edge of the connecting pipe, so that the push cylinder pushes the gas inside the air collecting bag to supply to the inside of the support air bag pad through the solenoid valve intake pipe, so as to use the support air bag pad to assist in pushing the material inside the lower mold to demold, and further assist in the secondary utilization of the gas inside the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 It is a front sectional structural schematic diagram of the present utility model;

[0016] Figure 3 It is the present utility model Figure 2 The enlarged structural schematic diagram at A in;

[0017] Figure 4 For the present utility model Figure 2 Schematic enlarged structure diagram at position B in it;

[0018] Figure 5 Schematic structure diagram of the support airbag pad of the present utility model;

[0019] Figure 6 Schematic structure diagram of the adjusting plate of the present utility model.

[0020] In the figure: 1, lower mold; 2, upper mold; 3, exhaust pipe; 4, L-shaped frame; 5, adjusting plate; 6, connecting pipe; 7, air collecting bag; 8, solenoid valve inlet pipe; 9, support airbag pad; 10, solenoid valve exhaust pipe; 11, auxiliary plate; 12, tension spring; 13, push cylinder; 14, cylinder; 15, spring; 16, round rod; 17, adjusting rod; 18, docking plate; 19, docking groove; 20, dust plug. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 - 6 , an exhaust structure for an aluminum alloy low-pressure casting mold, including a lower mold 1, an upper mold 2 is arranged at the top of the lower mold 1, an exhaust pipe 3 is fixedly assembled at the top of the upper mold 2, an L-shaped frame 4 is fixedly assembled at the top of the upper mold 2, an adjusting plate 5 is rotatably connected to the top of the inner wall of the L-shaped frame 4, a connecting pipe 6 is fixedly assembled on the inner wall of the L-shaped frame 4, one end of the connecting pipe 6 away from the L-shaped frame 4 is fixedly assembled with an air collecting bag 7, a solenoid valve inlet pipe 8 is fixedly assembled on the side of the air collecting bag 7, a support airbag pad 9 is fixedly assembled at the bottom of the inner wall of the lower mold 1, and the inner wall of the support airbag pad 9 is communicated with the inner wall of the solenoid valve inlet pipe 8. By adding the air collecting bag 7, the inner cavity of the air collecting bag 7 receives the gas discharged from the inside of the exhaust pipe 3 through the connecting pipe 6, so as to supply the gas inside the air collecting bag 7 to the inner cavity of the support airbag pad 9 by pushing, thereby using the support airbag pad 9 to push the material in the inner cavity of the lower mold 1 to demold. The support airbag pad 9 and the air collecting bag 7 are made of high-temperature resistant film material. A push plate is fixedly assembled on the top of the support airbag pad 9, and the side of the push plate is slidably connected to the inner wall of the lower mold 1, so as to use the push plate to assist the material in the inner cavity of the lower mold 1 to demold stably.

[0023] In a preferred embodiment, a dust plug 20 is fixedly sleeved on the inner wall of the adjusting plate 5. The number of the dust plugs 20 is four, and the diameters of the inner walls of the four dust plugs 20 are all different. The four dust plugs 20 are evenly distributed in the inner wall of the adjusting plate 5. A docking groove 19 is formed at the bottom of the adjusting plate 5. By installing the four dust plugs 20, the position of the four dust plugs 20 is adjusted by rotating the adjusting plate 5, and then the inner walls of the dust plugs 20 with different diameters are docked with the inner wall of the connecting pipe 6, so as to adjust different dust plugs 20 according to different heat during the aluminum alloy low-pressure casting, and assist in its stable casting.

[0024] In a preferred embodiment, a cylinder 14 is fixedly assembled at the top of the upper mold 2. A spring 15 is fixedly connected to the bottom of the inner wall of the cylinder 14. The top of the spring 15 is fixedly connected to a round rod 16, and the outer edge of the round rod 16 is slidably sleeved with the inner wall of the cylinder 14. A docking plate 18 is fixedly assembled at the top of the round rod 16, and the shape and size of the side surface of the docking plate 18 are adapted to the shape and size of the inner wall of the docking groove 19. By the combined use of the spring 15 and the cylinder 14, the spring 15 is used to push the round rod 16 in the inner wall of the cylinder 14, so as to drive the docking plate 18 to move upward by the round rod 16, and assist the side surface of the docking plate 18 to be docked with the inner wall of the docking groove 19, and then use the docking plate 18 to assist in stably limiting the adjusting plate 5.

[0025] In a preferred embodiment, an adjusting rod 17 is slidably sleeved with the inner wall of the cylinder 14. The side surface of the adjusting rod 17 is fixedly assembled with the outer edge of the round rod 16. By the combined use of the adjusting rod 17 and the round rod 16, the adjusting rod 17 is used to drive the round rod 16 to slide in the inner wall of the cylinder 14, so as to drive the docking plate 18 to adjust its position by the adjusting rod 17 through the round rod 16.

[0026] In a preferred embodiment, an auxiliary plate 11 is fixedly sleeved on the outer edge of the connecting pipe 6. A tension spring 12 is fixedly connected to the side surface of the auxiliary plate 11. One end of the tension spring 12 away from the auxiliary plate 11 is fixedly connected to a push cylinder 13, and the inner wall of the push cylinder 13 is slidably sleeved with the outer edge of the connecting pipe 6 and the outer edge of the air collecting bag 7. By the combined use of the tension spring 12 and the push cylinder 13, the tension spring 12 is used to assist in pulling the push cylinder 13 on the side surface of the auxiliary plate 11, so as to assist in storing the inner cavity of the air collecting bag 7, and the gas in the inner cavity of the air collecting bag 7 is stably discharged by moving the push cylinder 13.

[0027] In a preferred embodiment, a solenoid valve exhaust pipe 10 is fixedly assembled on the side surface of the lower mold 1. The inner wall of the solenoid valve exhaust pipe 10 passes through the inner wall of the support airbag pad 9 and is connected to the inner wall of the solenoid valve intake pipe 8. By installing the solenoid valve exhaust pipe 10, the gas in the inner cavity of the support airbag pad 9 is discharged by the solenoid valve exhaust pipe 10, and then the support airbag pad 9 is ensured to move downward to assist in the stable casting in the inner cavity of the lower mold 1.

[0028] Working principle: When the device is in use, the adjusting rod 17 is used to drive the round rod 16 to move, so as to drive the docking plate 18 to adjust the height by means of the round rod 16 until the side of the docking plate 18 is far away from the inner wall of the docking groove 19. Then, the adjusting plate 5 is rotated in the inner wall of the L-shaped frame 4 to assist the docking of different dust plugs 20 with the inner wall of the connecting pipe 6, so as to adjust the erection of dust plugs 20 with different diameters. The solenoid valve intake pipe 8 is opened and the solenoid valve exhaust pipe 10 is closed. Then, the push cylinder 13 is slid along the outer edge of the connecting pipe 6, so as to push the gas inside the air collecting bag 7 through the solenoid valve intake pipe 8 and supply it to the inside of the supporting air bag pad 9. Thus, the supporting air bag pad 9 is used to assist in pushing the material inside the lower mold 1 to demold, and further assist in the secondary utilization of the gas inside the connecting pipe 6.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-pressure casting mold exhaust structure for aluminum alloy, comprising a lower mold (1), characterized in that: The upper die (2) is arranged on the top of the lower die (1). An exhaust pipe (3) is fixedly assembled on the top of the upper die (2). An L-shaped frame (4) is fixedly assembled on the top of the upper die (2). A regulating plate (5) is rotatably connected to the top of the inner wall of the L-shaped frame (4). A connecting pipe (6) is fixedly assembled on the inner wall of the L-shaped frame (4). One end of the connecting pipe (6) far away from the L-shaped frame (4) is fixedly assembled with an air collecting bag (7). An electromagnetic valve inlet pipe (8) is fixedly assembled on the side of the air collecting bag (7). A supporting air bag pad (9) is fixedly assembled on the bottom of the inner wall of the lower die (1), and the inner wall of the supporting air bag pad (9) is communicated with the inner wall of the electromagnetic valve inlet pipe (8).

2. The exhaust structure of an aluminum alloy low-pressure casting mold according to claim 1, wherein: A dust-proof plug (20) is fixedly sleeved on the inner wall of the regulating plate (5). The number of the dust-proof plugs (20) is four, and the diameters of the inner walls of the four dust-proof plugs (20) are different. The four dust-proof plugs (20) are evenly distributed in the inner wall of the regulating plate (5). A docking groove (19) is formed at the bottom of the regulating plate (5).

3. The exhaust structure of an aluminum alloy low-pressure casting mold according to claim 1, characterized in that: A cylinder (14) is fixedly assembled on the top of the upper die (2). A spring (15) is fixedly connected to the bottom of the inner wall of the cylinder (14). A round rod (16) is fixedly connected to the top of the spring (15), and the outer edge of the round rod (16) is slidably sleeved with the inner wall of the cylinder (14). A docking plate (18) is fixedly assembled on the top of the round rod (16), and the shape and size of the side surface of the docking plate (18) are adapted to the shape and size of the inner wall of the docking groove (19).

4. The exhaust structure of an aluminum alloy low-pressure casting mold according to claim 3, wherein: A regulating rod (17) is slidably sleeved with the inner wall of the cylinder (14), and the side surface of the regulating rod (17) is fixedly assembled with the outer edge of the round rod (16).

5. The exhaust structure of an aluminum alloy low-pressure casting mold according to claim 1, characterized in that: An auxiliary plate (11) is fixedly sleeved on the outer edge of the connecting pipe (6). A pull spring (12) is fixedly connected to the side surface of the auxiliary plate (11). One end of the pull spring (12) far away from the auxiliary plate (11) is fixedly connected to a push cylinder (13), and the inner wall of the push cylinder (13) is slidably sleeved with the outer edge of the connecting pipe (6) and the outer edge of the air collecting bag (7).

6. The exhaust structure of an aluminum alloy low-pressure casting mold according to claim 1, wherein: An electromagnetic valve exhaust pipe (10) is fixedly assembled on the side surface of the lower die (1), and the inner wall of the electromagnetic valve exhaust pipe (10) passes through the inner wall of the supporting air bag pad (9) and is communicated with the inner wall of the electromagnetic valve inlet pipe (8).

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