A kind of aluminum alloy low pressure casting flywheel housing mold gate runner structure

Abstract

The utility model relates to the technical field of molds, and discloses a gate runner structure of an aluminum alloy low-pressure casting flywheel housing mold, including a mounting plate, a sand core molding disk is arranged on the top of the mounting plate, a mounting ring is fixedly installed on the outer edge of the sand core molding disk, a slide groove is opened on the outer edge of the sand core molding disk, a fixed ring is slidably connected to the outer edge of the sand core molding disk, and a slider is fixedly installed on the inner wall of the fixed ring. The gate runner structure of the aluminum alloy low-pressure casting flywheel housing mold adjusts the mold metal mold runner to a sand core molding runner through the coordinated use of pouring holes and runners, with a pouring hole in the middle and 5 runners for pouring, which greatly improves the thermal insulation and has a good shrinkage compensation effect. After the casting process is heat-insulated and depressurized, 50% of the aluminum liquid in the runner flows back into the insulation furnace, the shrinkage phenomenon is effectively controlled, the process yield is greatly improved, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a gate and runner structure of an aluminum alloy low-pressure casting flywheel housing mold. Background Art

[0002] The flywheel housing is installed between the engine and the transmission, connected to the crankcase, starter and oil pan, and equipped with the flywheel assembly, which plays the role of connecting the engine body, protecting and supporting. The main function of the flywheel housing is to achieve the effective connection between the engine and the transmission.

[0003] The existing flywheel housing products are made of aluminum alloy low-pressure casting, and the products are close to round The size is large, the structure is complex, the wall thickness is seriously uneven, the shape of the flywheel chamber is irregular, and it can only be formed by a sand core. The mold uses one pouring hole and five runners for pouring. Due to the poor thermal insulation of the metal mold runner, the parts with large wall thickness are poorly compensated and easy to shrink and loosen. The runners need to be painted frequently during the casting process, which is troublesome. The paint falls off or is poorly painted, which affects the compensation, the qualified rate is low, and the cost increases. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an aluminum alloy low-pressure casting flywheel housing mold gate runner structure, which has the advantages of high pass rate and rapid disassembly and assembly, and solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical scheme: an aluminum alloy low-pressure casting flywheel housing mold gate runner structure, comprising a mounting plate, a sand core molding disk is arranged on the top of the mounting plate, a mounting ring is fixedly installed on the outer edge of the sand core molding disk, a slide groove is provided on the outer edge of the sand core molding disk, a fixing ring is slidably connected to the outer edge of the sand core molding disk, a slider is fixedly installed on the inner wall of the fixing ring, threaded holes are provided on the mounting plate, the mounting ring and the inner wall of the fixing ring, bolts are threadedly connected to the inner wall of the threaded hole, a flow channel is provided on the inner wall of the sand core molding disk, and a pouring hole is provided on the top of the sand core molding disk.

[0006] As a preferred technical solution of the utility model: the number of the flow channels is five groups, and the pouring hole is located at the center of the sand core forming disk.

[0007] As a preferred technical solution of the utility model: the shape of the slider is matched with the shape of the slide groove, and the slider is slidably connected to the inner wall of the slide groove.

[0008] As a preferred technical solution of the utility model: the number of the threaded holes and the sliding grooves, the sliding blocks and the bolts are all multiple.

[0009] As a preferred technical solution of the utility model: the sand core forming disk is circular, and the diameters of the mounting ring and the fixing ring are matched.

[0010] As a preferred technical solution of the utility model: the inner wall of the sand core forming disk is provided with a plurality of blocks.

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

[0012] 1. The gate and runner structure of the aluminum alloy low-pressure casting flywheel housing mold adjusts the mold metal mold runner to a sand core molding runner through the coordinated use of the pouring hole and the runner. There is a pouring hole in the middle and 5 runners are poured through the pouring hole. The thermal insulation is greatly improved and the shrinkage compensation effect is good. After the casting process is heat-insulated and depressurized, 50% of the aluminum liquid in the runner flows back into the insulation furnace, the shrinkage phenomenon is effectively controlled, the process yield is greatly improved, and the cost is reduced.

[0013] 2. The gate runner structure of the aluminum alloy low-pressure casting flywheel housing mold uses bolts and threaded holes in combination, utilizes the threaded connection of the threaded holes and bolts, and then utilizes bolts to fix the mounting ring and the fixing ring on the top of the mounting plate. By utilizing the setting of the fixing ring, the stability of the mounting ring can be improved, so that the mounting ring can be more firmly installed on the top of the mounting plate. When disassembly is required, it is only necessary to rotate the bolt counterclockwise to remove the bolt from the inner wall of the threaded hole. At this time, the mounting ring, the fixing ring and the mounting plate can be separated in turn, so that the device has the ability to be quickly disassembled and assembled, and is convenient for installation, disassembly, maintenance and replacement, thereby reducing the cost of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0016] Figure 3 This is a schematic diagram of the flow channel structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the fixing ring structure of the utility model.

[0018] In the figure: 1. Mounting plate; 2. Sand core forming disk; 3. Mounting ring; 4. Runner; 5. Casting hole; 6. Slide; 7. Fixing ring; 8. Slider; 9. Bolt; 10. Threaded hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 4 A gate runner structure of an aluminum alloy low-pressure casting flywheel housing mold comprises a mounting plate 1, a sand core molding disk 2 is arranged on the top of the mounting plate 1, a mounting ring 3 is fixedly installed on the outer edge of the sand core molding disk 2, a slide groove 6 is provided on the outer edge of the sand core molding disk 2, a fixing ring 7 is slidably connected to the outer edge of the sand core molding disk 2, a slider 8 is fixedly installed on the inner wall of the fixing ring 7, threaded holes 10 are provided on the inner walls of the mounting plate 1, the mounting ring 3 and the fixing ring 7, bolts 9 are threadedly connected to the inner wall of the threaded hole 10, a flow channel 4 is provided on the inner wall of the sand core molding disk 2, and a pouring hole 5 is provided on the top of the sand core molding disk 2.

[0021] In the above structure, the mounting ring 3 and the fixing ring 7 can be fixedly mounted on the top of the mounting plate 1 by means of the threaded connection of the threaded hole 10 and the bolt 9, and the fixing ring 7 can be arranged by means of the bolt 9. The stability of the mounting ring 3 can be improved by means of the fixing ring 7, so that the mounting ring 3 can be more firmly mounted on the top of the mounting plate 1. When disassembly is required, the bolt 9 only needs to be rotated counterclockwise to remove the bolt 9 from the inner wall of the threaded hole 10. At this time, the mounting ring 3, the fixing ring 7 and the mounting plate 1 can be separated in turn, so that the device has the ability to be quickly disassembled and assembled, and is convenient for installation, disassembly, maintenance and replacement, thereby reducing the cost of maintenance.

[0022] In a preferred embodiment, the number of the flow channels 4 is five groups, and the pouring hole 5 is located at the center of the sand core forming disk 2 .

[0023] In the above structure, through the casting of five runners 4, the thermal insulation is greatly improved, the shrinkage compensation effect is good, and 50% of the aluminum liquid in runner 4 flows back into the insulation furnace after the casting process is heat-insulated and depressurized, the shrinkage phenomenon is effectively controlled, the process yield is greatly improved, and the cost is reduced.

[0024] In a preferred embodiment, the shape of the slider 8 is adapted to the shape of the slide groove 6 , and the slider 8 is slidably connected to the inner wall of the slide groove 6 .

[0025] In the above structure, by setting the slide groove 6 and using the slider 8, the sliding of the fixing ring 7 can be limited, and the Shudie fixing ring 7 can better fix the mounting ring 3.

[0026] In a preferred embodiment, the number of the threaded holes 10 , the sliding grooves 6 , the sliding blocks 8 , and the bolts 9 are all multiple.

[0027] In the above structure, by providing a plurality of threaded holes 10 and slide grooves 6 as well as slide blocks 8 and bolts 9, the fixing ring 7 can be used to fix the mounting ring 3 more stably.

[0028] In a preferred embodiment, the sand core forming disk 2 is circular in shape, and the diameters of the mounting ring 3 and the fixing ring 7 are matched.

[0029] In the above structure, the diameters of the mounting ring 3 and the fixing ring 7 are adapted to each other, thereby preventing the fixing ring 7 from occupying too much space.

[0030] In a preferred embodiment: the inner wall of the sand core forming disk 2 is provided with a plurality of blocks.

[0031] In the above structure, the clamping block is arranged so that the mold is placed in the sand core forming disk 2 according to the positioning, which plays a clamping role on the mold.

[0032] Working principle: when it is necessary to use the device, the metal mold flow channel 4 of the mold is adjusted to a sand core forming flow channel 4, with a pouring hole 5 in the middle, and 5 flow channels 4 are poured through the pouring holes, so that the thermal insulation is greatly improved, and the shrinkage compensation effect is good. After the casting process is heat-insulated and depressurized, 50% of the aluminum liquid in the flow channel 4 flows back into the insulation furnace, and the shrinkage phenomenon is effectively controlled, the process yield is greatly improved, and the cost is reduced. Secondly, the threaded connection of the threaded hole 10 and the bolt 9 is utilized, and then the bolt 9 can be used to fix the mounting ring 3 and the fixing ring 7 on the top of the mounting plate 1. By using the setting of the fixing ring 7, the stability of the mounting ring 3 can be improved, so that the mounting ring 3 can be more firmly installed on the top of the mounting plate 1. When disassembly is required, only the bolt 9 needs to be turned counterclockwise to remove the bolt 9 from the inner wall of the threaded hole 10. At this time, the mounting ring 3, the fixing ring 7 and the mounting plate 1 can be separated in turn, so that the device has the ability to be quickly disassembled and assembled, and is convenient for installation, disassembly, maintenance and replacement, thereby reducing the cost of maintenance.

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

Claims

1. A gate and runner structure of a flywheel housing mold for low-pressure casting of an aluminum alloy, comprising a mounting plate (1), characterized in that: A sand core forming disc (2) is arranged on the top of the mounting plate (1), a mounting ring (3) is fixedly mounted on the outer edge of the sand core forming disc (2), a sliding groove (6) is provided on the outer edge of the sand core forming disc (2), a fixing ring (7) is slidably connected to the outer edge of the sand core forming disc (2), a sliding block (8) is fixedly mounted on the inner wall of the fixing ring (7), threaded holes (10) are provided on the inner walls of the mounting plate (1), the mounting ring (3) and the fixing ring (7), bolts (9) are threadedly connected to the inner walls of the threaded holes (10), a flow channel (4) is provided on the inner wall of the sand core forming disc (2), and a pouring hole (5) is provided on the top of the sand core forming disc (2).

2. The gate and runner structure of the aluminum alloy low-pressure casting flywheel housing mold according to claim 1, characterized in that: The number of the flow channels (4) is five groups, and the pouring holes (5) are located at the center of the sand core molding disk (2).

3. The gate and runner structure of the aluminum alloy low-pressure casting flywheel housing mold according to claim 1, characterized in that: The shape of the sliding block (8) matches the shape of the sliding groove (6), and the sliding block (8) is slidably connected to the inner wall of the sliding groove (6).

4. The gate and runner structure of the aluminum alloy low-pressure casting flywheel housing mold according to claim 1, characterized in that: The threaded holes (10), the sliding grooves (6), the sliding blocks (8) and the bolts (9) are all in multiple numbers.

5. The gate and runner structure of the aluminum alloy low-pressure casting flywheel housing mold according to claim 1, characterized in that: The sand core forming disc (2) is circular in shape, and the diameters of the mounting ring (3) and the fixing ring (7) are matched.

6. The gate and runner structure of the aluminum alloy low-pressure casting flywheel housing mold according to claim 1, characterized in that: The inner wall of the sand core forming disk (2) is provided with a plurality of clamping blocks.

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