Lost foam casting device for main saw wheel

Abstract

The utility model relates to the technical field of main saw wheel production, and discloses a main saw wheel evanescent mode casting device which comprises an evanescent mode shell, quartz sand used for molding a cavity is arranged in the evanescent mode shell, a model used for molding a main saw wheel is arranged in the evanescent mode shell, and two compaction assemblies are arranged on the evanescent mode shell. The two compacting assemblies are uniformly arranged in a circumferential array, and the arranged conical sliding holes are conical, so that the two connecting rods can have certain angle change when alternately stretching out and drawing back, and a beating plate can apply multi-directional acting force when beating quartz sand in an evanescent mold shell, so that the quartz sand in the evanescent mold shell is compacted, and the quality of the evanescent mold is improved. Therefore, part of the side wall of the main saw wheel model can be compacted, and the problem that in a traditional mode, when quartz sand is compacted through single vertical acting force, the quartz sand only compacts the top surface of the main saw wheel model, the side face compacting effect is poor, and consequently the side wall is prone to being damaged when the main saw wheel model is demolded is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of main saw wheel production, in particular to a lost foam casting device for a main saw wheel. Background Art

[0002] When the main saw wheel is produced using lost foam, the model needs to be compacted in the quartz sand. The compacted sand mold can fit tightly into the mold to form a high-density sand mold structure, thereby effectively reducing defects such as pores and shrinkage holes generated in the casting during the solidification process, and improving the density and mechanical properties of the casting.

[0003] In the traditional method, a single vertical force is generally used to compact the quartz sand. This vertical downward force has a good compaction effect on the sand mold on the top surface of the main saw wheel model, but the compaction effect on the side of the model and the sand mold is far worse than the top. This may cause the side wall to be damaged when the main saw wheel model is demolded, affecting the integrity of the cavity. Utility Model Content

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the utility model provides a main saw wheel lost foam casting device, which can solve the problem that the traditional method generally uses a single vertical force to compact the quartz sand. This vertical downward force has a good compaction effect on the sand mold on the top surface of the main saw wheel model, but the compaction effect on the side of the model and the sand mold is far less than the top. This may cause the side wall of the main saw wheel model to be damaged when demolding, affecting the integrity of the mold cavity.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned object, the utility model provides the following technical solutions: a main saw wheel lost foam casting device, comprising a lost foam mold shell, wherein the lost foam mold shell is provided with quartz sand for shaping the mold cavity, wherein the lost foam mold shell is provided with a mold for shaping the main saw wheel model, and the lost foam mold shell is provided with two compacting components;

[0008] The two compacting assemblies are evenly arranged in a circumferential array, and the compacting assemblies are used to compact the quartz sand of the lost foam in the lost foam shell;

[0009] The compacting assembly includes a slide ring, a tooth groove, a rotating frame, a rotating shaft, a first gear, a rotating sleeve, a clapper, a tapered sliding hole, a connecting fixed ring and a motor;

[0010] The slide rail ring in the compacting assembly is fixedly installed on the disappearing mold shell, the rotating frame is slidably connected in the slide rail ring, and the tooth groove is arranged on the outer surface of the slide rail ring.

[0011] Preferably, a fixed sleeve is fixedly connected to the rotating frame, the rotating shaft is rotatably connected in the fixed sleeve, the first gear is fixedly sleeved on one end of the rotating shaft, and the first gear is meshed with the tooth groove.

[0012] Preferably, the outer surface of the rotating shaft is provided with two eccentric rotating grooves, and the two rotating sleeves are respectively sleeved on the outer surfaces of the corresponding eccentric rotating grooves, and the outer surfaces of the rotating sleeves are fixedly connected with connecting rods.

[0013] Preferably, a horizontal plate is fixedly connected between the fixed sleeve plate and the connecting fixed ring, two conical sliding holes are opened on the horizontal plate, and two connecting rods are arranged in the corresponding conical sliding holes. When the rotating shaft rotates, the two connecting rods can be driven to continuously and alternately extend and retract in the conical sliding holes through the eccentric rotating groove and the rotating sleeve.

[0014] Preferably, the two clappers are respectively fixedly connected to the lower ends of the corresponding connecting rods, and the clappers are used to compact the quartz sand in the disappearing mold shell. A gate fixing frame is fixedly connected to the slide rail ring, and the gate of the gate fixing frame is connected to the flow channel of the disappearing mold shell cavity through a connecting fixing ring.

[0015] Preferably, the motor is fixedly mounted on a fixed sleeve plate on one side, a motor gear is fixedly sleeved on the outer surface of the output shaft of the motor, the motor gear is meshed with the first gear, and the motor can drive the rotating shaft on the first gear to rotate through the motor gear.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the utility model provides a main saw wheel lost foam casting device, which has the following beneficial effects:

[0018] 1. The main saw wheel lost foam casting device drives the two connecting rods to continuously and alternately extend and retract in the tapered slide hole through the eccentric rotating groove and the rotating sleeve. At this time, the clappers at the lower ends of the two connecting rods will continuously beat the quartz sand in the lost mold shell. Since the tapered slide hole is tapered, the two connecting rods can have a certain angle change when they are alternately extended and retracted. This enables the clappers to apply multi-directional forces when beating the quartz sand in the lost mold shell, so that part of the side wall of the main saw wheel model can also be compacted. This avoids the traditional method of using a single vertical force to compact the quartz sand, when the quartz sand is only compacted on the top surface of the main saw wheel model, and the side compaction effect is poor, resulting in the problem that the side wall is easily damaged when the main saw wheel model is demoulded.

[0019] 2. The main saw wheel lost foam casting device can move around on the slide ring driven by the motor through the two compacting components, which can make the quartz sand in the lost mold shell be evenly and effectively compacted, which further improves the success rate of the main saw wheel lost foam casting and avoids damage to the mold cavity caused by uneven compaction of the main saw wheel model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the rotating sleeve of the utility model.

[0023] In the figure: 1. Vanishing mold shell; 2. Slide ring; 3. Tooth groove; 4. Rotating frame; 5. Fixed sleeve; 6. Rotating shaft; 7. First gear; 8. Eccentric rotating groove; 9. Rotating sleeve; 10. Connecting rod; 11. Clapper; 12. Conical sliding hole; 13. Connecting fixed ring; 14. Motor; 15. Motor gear; 16. Cross plate; 17. Gate fixing frame. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of this utility model, greater than, less than, exceed, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If there is a description of first or second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] See also Figure 1-3The utility model provides a new technical solution: a main saw wheel lost foam casting device, comprising a lost mold shell 1, wherein the lost mold shell 1 is provided with quartz sand for shaping the mold cavity, and the lost mold shell 1 is provided with a mold for shaping the main saw wheel model, and two compacting components are provided on the lost mold shell 1;

[0029] The two compacting assemblies are evenly arranged in a circular array, and the compacting assemblies are used to compact the quartz sand of the lost foam in the lost foam shell 1;

[0030] The compacting assembly includes a slide ring 2, a tooth groove 3, a rotating frame 4, a rotating shaft 6, a first gear 7, a rotating sleeve 9, a clapper 11, a tapered sliding hole 12, a connecting and fixing ring 13 and a motor 14;

[0031] The slide rail ring 2 in the compacting assembly is fixedly mounted on the vanishing mold shell 1 , the rotating frame 4 is slidably connected in the slide rail ring 2 , and the tooth groove 3 is provided on the outer surface of the slide rail ring 2 .

[0032] Furthermore, a fixed sleeve 5 is fixedly connected to the rotating frame 4 , a rotating shaft 6 is rotatably connected in the fixed sleeve 5 , a first gear 7 is fixedly sleeved on one end of the rotating shaft 6 , and the first gear 7 is meshed with the tooth groove 3 .

[0033] Furthermore, two eccentric grooves 8 are formed on the outer surface of the rotating shaft 6 , and two rotating sleeves 9 are respectively sleeved on the outer surfaces of the corresponding eccentric grooves 8 . The outer surfaces of the rotating sleeves 9 are fixedly connected with connecting rods 10 .

[0034] Furthermore, a transverse plate 16 is fixedly connected between the fixed sleeve 5 and the connecting fixed ring 13, two conical sliding holes 12 are opened on the transverse plate 16, and two connecting rods 10 are arranged in the corresponding conical sliding holes 12. When the rotating shaft 6 rotates, it can drive the two connecting rods 10 to continuously and alternately extend and retract in the conical sliding holes 12 through the eccentric rotating groove 8 and the rotating sleeve 9.

[0035] Furthermore, two clappers 11 are respectively fixedly connected to the lower ends of the corresponding connecting rods 10. The clappers 11 are used to compact the quartz sand in the lost mold shell 1. A gate fixing frame 17 is fixedly connected to the slide ring 2. The gate of the gate fixing frame 17 is connected to the flow channel of the cavity of the lost mold shell 1 through the connecting fixing ring 13.

[0036] Furthermore, the motor 14 is fixedly mounted on the fixed sleeve 5 on one side, and the outer surface of the output shaft of the motor 14 is fixedly sleeved with a motor gear 15, which is meshed with the first gear 7. The motor 14 can drive the rotating shaft 6 on the first gear 7 to rotate through the motor gear 15.

[0037] Furthermore, when in use, after the main saw wheel model is embedded in the upper and lower molds of the disappearing mold shell 1, by starting the motor 14, the output shaft of the motor 14 can drive the rotating shaft 6 on the first gear 7 to rotate through the motor gear 15. When the rotating shaft 6 rotates, it can drive the two compacting components to move around on the slide ring 2. At the same time, when the rotating shaft 6 rotates, it can drive the two connecting rods 10 to continuously and alternately extend and retract in the tapered slide hole 12 through the eccentric rotating groove 8 and the rotating sleeve 9. At this time, the clappers 11 at the lower ends of the two connecting rods 10 will continuously slap the quartz sand in the disappearing mold shell 1 Since the tapered sliding hole 12 is tapered, the two connecting rods 10 can have a certain angle change when they are alternately extended and retracted, which enables the clapper 11 to apply multi-directional force when slapping the quartz sand in the disappearing mold shell 1, so that part of the side wall of the main saw wheel model can also be compacted. This avoids the problem that when a single vertical force is used to compact the quartz sand in the traditional way, the quartz sand only compacts the top surface of the main saw wheel model, and the side compaction effect is poor, resulting in the side wall being easily damaged when the main saw wheel model is demoulded.

[0038] Furthermore, the two compacting components can move around on the slide ring 2 under the drive of the motor 14, which can make the quartz sand in the lost foam mold shell 1 be evenly and effectively compacted, which further improves the success rate of the lost foam casting of the main saw wheel and avoids damage to the mold cavity caused by uneven compaction of the main saw wheel model.

[0039] Working principle: When in use, after the main saw wheel model is embedded in the upper and lower molds of the disappearing mold shell 1, by starting the motor 14, the output shaft of the motor 14 can drive the rotating shaft 6 on the first gear 7 to rotate through the motor gear 15. When the rotating shaft 6 rotates, it can drive the two compacting components to move around on the slide ring 2. At the same time, when the rotating shaft 6 rotates, it can drive the two connecting rods 10 to continuously extend and retract alternately in the conical sliding hole 12 through the eccentric rotating groove 8 and the rotating sleeve 9. At this time, the clappers 11 at the lower ends of the two connecting rods 10 will continuously slap the quartz sand in the disappearing mold shell 1, and since the conical sliding hole 12 is conical, this can enable the two connecting rods 10 to have a certain angle change when alternatingly extending and retracting, which enables the clapper 11 to apply multi-directional force when slapping the quartz sand in the disappearing mold shell 1, so that part of the side wall of the main saw wheel model can also be compacted.

[0040] Furthermore, the two compacting assemblies can be driven by the motor 14 to move around on the slide rail ring 2, which can make the quartz sand in the disappearing mold shell 1 be compacted evenly and effectively.

[0041] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A main saw wheel lost foam casting device, characterized by: The invention comprises a vanishing mold shell (1), wherein quartz sand for shaping a mold cavity is provided in the vanishing mold shell (1), a main saw wheel model for shaping is provided in the vanishing mold shell (1), and two compacting components are provided on the vanishing mold shell (1); The two compacting assemblies are evenly arranged in a circumferential array, and the compacting assemblies are used to compact the quartz sand of the lost foam in the lost foam mold shell (1); The compacting assembly comprises a slide rail ring (2), a tooth groove (3), a rotating frame (4), a rotating shaft (6), a first gear (7), a rotating sleeve (9), a clapper (11), a tapered sliding hole (12), a connecting fixing ring (13) and a motor (14); The slide rail ring (2) in the compacting assembly is fixedly mounted on the vanishing mold shell (1), the rotating frame (4) is slidably connected in the slide rail ring (2), and the tooth groove (3) is provided on the outer surface of the slide rail ring (2).

2. A main saw wheel lost foam casting device according to claim 1, characterized in that: A fixed sleeve (5) is fixedly connected to the rotating frame (4), a rotating shaft (6) is rotatably connected in the fixed sleeve (5), a first gear (7) is fixedly sleeved on one end of the rotating shaft (6), and the first gear (7) is meshed with the tooth groove (3).

3. A main saw wheel lost foam casting device according to claim 2, characterized in that: The outer surface of the rotating shaft (6) is provided with two eccentric rotating grooves (8), and two rotating sleeves (9) are respectively sleeved on the outer surfaces of the corresponding eccentric rotating grooves (8), and the outer surfaces of the rotating sleeves (9) are fixedly connected with connecting rods (10).

4. A main saw wheel lost foam casting device according to claim 2, characterized in that: A transverse plate (16) is fixedly connected between the fixed sleeve plate (5) and the connecting fixed ring (13). Two conical sliding holes (12) are both provided on the transverse plate (16). Two connecting rods (10) are both arranged in the corresponding conical sliding holes (12). When the rotating shaft (6) rotates, the two connecting rods (10) can be driven to continuously and alternately extend and retract in the conical sliding holes (12) through the eccentric rotating groove (8) and the rotating sleeve (9).

5. The lost foam casting device for a main saw wheel according to claim 4, characterized in that: The two clappers (11) are respectively fixedly connected to the lower ends of the corresponding connecting rods (10). The clappers (11) are used to pat the quartz sand in the evaporative mold shell (1). A gate fixing frame (17) is fixedly connected to the slide rail ring (2). The gate of the gate fixing frame (17) is connected to the flow channel of the cavity of the evaporative mold shell (1) through a connecting fixing ring (13).

6. A main saw wheel lost foam casting device according to claim 2, characterized in that: The motor (14) is fixedly mounted on a fixed sleeve plate (5) on one side. A motor gear (15) is fixedly sleeved on the outer surface of the output shaft of the motor (14). The motor gear (15) is meshedly connected with the first gear (7). The motor (14) can drive the rotating shaft (6) on the first gear (7) to rotate through the motor gear (15).

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