Molten metal uniform injection device for lost foam casting

Abstract

The utility model relates to a molten metal uniform injection device for lost foam casting, which comprises a frame body, a box body and a hollow pipe, the box body and the hollow pipe are respectively fixed on the frame body up and down, a driving mechanism is arranged between the box body and the hollow pipe, a stirring component is arranged in the box body, and the stirring component is connected with the driving mechanism through a first transmission structure. A hollow pipe is arranged in the box body, a discharging assembly is arranged in the hollow pipe, and the discharging assembly is connected with the driving mechanism through a second transmission structure. Under the mutual cooperation of the driving mechanism and the first transmission structure, molten metal in the box body is fully mixed through the stirring assembly, and the quality of molten metal raw materials is ensured; and then the molten metal is guided into the hollow pipe through the liquid discharging pipe and the electromagnetic valve, and then the molten metal in the hollow pipe is evenly discharged through the discharging assembly by means of a second transmission structure matched with the driving mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid injection equipment, and specifically relates to a device for uniformly injecting molten metal in lost foam casting. Background Technique

[0002] Lost foam casting (also known as full-mold casting) is a new casting method in which paraffin or foam models similar in size and shape to the casting are bonded and combined into a model cluster. After being brushed with refractory coating and dried, they are vibrated and shaped in dry quartz sand, and poured under negative pressure. The models are vaporized, and the liquid metal occupies the position of the models and forms the casting after solidification and cooling.

[0003] Lost foam casting seems simple, but in fact, the number of technological processes to be controlled has increased significantly. At present, basically, the simple method of using anti-wear parts in the initial stage is still used to make more complex castings, molds, gating systems, etc. are rough, and there is no strict technological process.

[0004] The most taboo thing in the pouring operation of lost foam casting is intermittent pouring, which is likely to cause cold shut defects in the casting, that is, the temperature of the previously poured molten metal decreases, resulting in cold shut between the previously poured molten metal and the subsequently poured molten metal. Therefore, it is not only necessary to ensure that the molten metal can be continuously injected, but also to ensure that the molten metal can be uniformly injected into the mold in order to ensure the quality of the casting. Content of the Utility Model

[0005] The purpose of the utility model is to provide a device for uniformly injecting molten metal in lost foam casting to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A device for uniformly injecting molten metal in lost foam casting includes a frame body, a box body and a hollow pipe. The box body and the hollow pipe are respectively fixed on the frame body up and down;

[0008] A driving mechanism is arranged between the box body and the hollow pipe. A stirring assembly is arranged in the box body. The stirring assembly is connected to the driving mechanism through a first transmission structure. When the driving mechanism operates, the stirring assembly will cooperate with the first transmission structure to uniformly stir the molten metal inside the box body;

[0009] A drain pipe is arranged at the bottom of the box body. An electromagnetic valve is installed on the drain pipe. The molten metal in the box body will flow into the hollow pipe under the action of the drain pipe and the electromagnetic valve;

[0010] A discharge component is arranged inside the hollow tube. The discharge component is connected to the drive mechanism through a second transmission structure. The discharge component will uniformly discharge the molten metal inside the hollow tube under the interaction of the second transmission structure and the drive mechanism.

[0011] As a further solution of the present utility model:

[0012] The drive mechanism includes a fixed frame fixedly arranged on the box body and a transmission rod vertically rotatably arranged on the fixed frame;

[0013] A motor is vertically and fixedly installed on the hollow tube, and one end of the transmission rod is fixedly connected to the output end of the motor.

[0014] As a further solution of the present utility model:

[0015] The stirring component includes a cross plate fixedly arranged on the top of the box body and a rotating shaft vertically rotatably arranged on the cross plate;

[0016] A bracket is rotatably arranged inside the box body. The bottom end of the rotating shaft is fixedly connected to the center of the bracket, and a plurality of stirring rods are vertically rotatably arranged on the bracket;

[0017] A first toothed ring is fixedly arranged inside the box body. One ends of a plurality of the stirring rods are fixedly provided with first gears, and a plurality of the first gears are meshed with the first toothed ring.

[0018] As a further solution of the present utility model:

[0019] The first transmission structure includes a first sprocket fixedly arranged on the rotating shaft and a second sprocket fixedly arranged on the transmission rod. The first sprocket and the second sprocket are connected by a first chain.

[0020] As a further solution of the present utility model:

[0021] The discharge component includes a second toothed ring and a mesh plate rotatably arranged inside the hollow tube. The second toothed ring and the mesh plate are fixedly connected by a plurality of L-shaped rods;

[0022] A U-shaped frame is fixedly arranged on the hollow tube. A rotating rod is rotatably arranged inside the U-shaped frame. One end of the rotating rod is fixedly provided with a second gear, and the second gear is meshed with the second toothed ring.

[0023] As a further solution of the present utility model:

[0024] The second transmission structure includes a driven sprocket fixedly arranged at the other end of the rotating rod and a driving sprocket fixedly arranged on the transmission rod, and the driving sprocket and the driven sprocket are connected by a second chain.

[0025] As a further scheme of the present utility model:

[0026] A retaining ring is fixedly arranged inside the box body, and the retaining ring is located above the first toothed ring and the first gear;

[0027] The net plate is arranged in a shape like a "wizard hat".

[0028] Compared with the prior art, the beneficial effects of the present utility model are as follows: Under the mutual cooperation of the driving mechanism and the first transmission structure, the stirring assembly fully mixes the molten metal in the box body to ensure the quality of the molten metal raw material, and then the molten metal is introduced into the hollow tube through the drain pipe and the solenoid valve. Then, by using the second transmission structure that cooperates with the driving mechanism, the discharging assembly evenly discharges the molten metal in the hollow tube. Description of the Drawings

[0029] Figure 1 It is a schematic diagram of the overall structure.

[0030] Figure 2 It is a schematic diagram of another perspective of the overall structure.

[0031] Figure 3 It is a cross-sectional view of the box body structure.

[0032] Figure 4 It is a cross-sectional view of the hollow tube structure.

[0033] Figure 5 It is a cross-sectional view of the box body and the hollow tube.

[0034] Figure 6 For Figure 5 The enlarged view at A in

[0035] Figure 7 For Figure 5 The enlarged view at B in

[0036] Figure 8 It is a schematic diagram with the frame body, the box body and the hollow tube removed.

[0037] In the figure: 1. Frame body; 2. Box body; 201. Drain pipe; 202. Retaining ring; 3. Hollow pipe; 4. Solenoid valve; 5. Fixed frame; 6. Transmission rod; 7. Motor; 8. Horizontal plate; 9. Rotating shaft; 10. Bracket; 11. Stirring rod; 12. First gear ring; 13. First gear; 14. First sprocket; 15. Second sprocket; 16. First chain; 17. Mesh plate; 18. Second gear ring; 19. L-shaped rod; 20. U-shaped frame; 21. Rotating rod; 22. Second gear; 23. Driven sprocket; 24. Driving sprocket; 25. Second chain. Detailed implementation mode

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] In addition, the elements in the present invention are referred to as "fixed to" or "disposed on" another element, and it can be directly on another element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0040] Please refer to Figures 1 to 8 , in the embodiment of the present invention, a device for uniformly injecting molten metal for lost foam casting includes a frame body 1, a box body 2 and a hollow pipe 3. The box body 2 and the hollow pipe 3 are respectively fixed on the frame body 1 up and down;

[0041] A driving mechanism is arranged between the box body 2 and the hollow pipe 3. A stirring assembly is arranged in the box body 2. The stirring assembly is connected to the driving mechanism through a first transmission structure. When the driving mechanism operates, the stirring assembly will cooperate with the first transmission structure to uniformly stir the molten metal inside the box body 2;

[0042] A drain pipe 201 is arranged at the bottom of the box body 2. A solenoid valve 4 is installed on the drain pipe 201. The molten metal in the box body 2 will flow into the hollow pipe 3 under the action of the drain pipe 201 and the solenoid valve 4;

[0043] A discharge assembly is arranged inside the hollow tube 3. The discharge assembly is connected to the driving mechanism through a second transmission structure. The discharge assembly will evenly discharge the molten metal inside the hollow tube 3 under the interaction of the second transmission structure and the driving mechanism.

[0044] In this solution, under the mutual cooperation of the driving mechanism and the first transmission structure, the stirring assembly fully mixes the molten metal in the box body 2 to ensure the quality of the molten metal raw material. Then, the molten metal is introduced into the hollow tube 3 through the drain pipe 201 and the solenoid valve 4. By using the second transmission structure that cooperates with the driving mechanism, the discharge assembly evenly discharges the molten metal in the hollow tube 3.

[0045] As a further solution of the present utility model, the driving mechanism includes a fixed frame 5 fixedly arranged on the box body 2 and a transmission rod 6 vertically rotatably arranged on the fixed frame 5;

[0046] A motor 7 is vertically and fixedly installed on the hollow tube 3, and one end of the transmission rod 6 is fixedly connected to the output end of the motor 7.

[0047] In this embodiment, since one end of the transmission rod 6 is fixedly connected to the output end of the motor 7 and the transmission rod 6 is rotatably arranged on the fixed frame 5, when the motor 7 is started, the output end of the motor 7 will drive the transmission rod 6 to rotate.

[0048] As a further solution of the present utility model, the stirring assembly includes a cross plate 8 fixedly arranged on the top of the box body 2 and a rotating shaft 9 vertically rotatably arranged on the cross plate 8;

[0049] A support 10 is rotatably arranged inside the box body 2. The bottom end of the rotating shaft 9 is fixedly connected to the center of the support 10. A plurality of stirring rods 11 are vertically rotatably arranged on the support 10;

[0050] A first gear ring 12 is fixedly arranged inside the box body 2. A first gear 13 is fixedly arranged at the top end of each of the plurality of stirring rods 11, and the plurality of first gears 13 are all meshed with the first gear ring 12.

[0051] In this embodiment, when the rotating shaft 9 rotates, the rotating shaft 9 will drive the plurality of stirring rods 11 to rotate inside the box body 2 through the support 10, so as to stir the molten metal;

[0052] Moreover, since the plurality of first gears 13 respectively fixedly arranged at the top ends of the plurality of stirring rods 11 are all meshed with the first gear ring 12, therefore, the plurality of first gears 13 will all cooperate with the first gear ring 12 to make the plurality of stirring rods 11 rotate self - rotatably, thereby realizing that the plurality of stirring rods 11 revolve around the support 10 while rotating self - rotatably, improving the mixing degree of the molten metal in the box body 2.

[0053] As a further solution of the present utility model, the first transmission structure includes a first sprocket 14 fixedly arranged on the rotating shaft 9 and a second sprocket 15 fixedly arranged on the transmission rod 6, and the first sprocket 14 and the second sprocket 15 are connected by a first chain 16.

[0054] In this embodiment, during the rotation of the transmission rod 6, the transmission rod 6 will drive the second sprocket 15 to rotate. At the same time, the first sprocket 14 will rotate following the second sprocket 15 through the first chain 16, so that the first sprocket 14 drives the rotating shaft 9 to rotate.

[0055] As a further solution of the present utility model, the discharging assembly includes a second gear ring 18 and a mesh plate 17 rotatably arranged in the hollow tube 3, and the second gear ring 18 and the mesh plate 17 are fixedly connected by a plurality of L-shaped rods 19;

[0056] A U-shaped bracket 20 is fixedly arranged on the hollow tube 3, a rotating rod 21 is rotatably arranged in the U-shaped bracket 20, a second gear 22 is fixedly arranged at one end of the rotating rod 21, and the second gear 22 meshes with the second gear ring 18.

[0057] In this embodiment, when the molten metal after the stirring in the box body 2 flows to the hollow tube 3, it will first fall to the top of the mesh plate 17, and then the molten metal will be dispersedly injected into the mold under the action of the mesh plate 17;

[0058] Since the second gear 22 meshes with the second gear ring 18, when the rotating rod 21 rotates, the rotating rod 21 will drive the second gear ring 18 to rotate through the second gear 22;

[0059] Also, because the second gear ring 18 is fixedly connected with the mesh plate 17 rotatably arranged in the hollow tube 3 through a plurality of L-shaped rods 19, the mesh plate 17 will rotate following the second gear ring 18 through the plurality of L-shaped rods 19. During the rotation of the mesh plate 17, the molten metal can be injected into the mold more evenly, improving the casting quality.

[0060] As a further solution of the present utility model, the second transmission structure includes a driven sprocket 23 fixedly arranged at the other end of the rotating rod 21 and a driving sprocket 24 fixedly arranged on the transmission rod 6, and the driving sprocket 24 and the driven sprocket 23 are connected by a second chain 25.

[0061] In this embodiment, during the rotation of the transmission rod 6, the driving sprocket 24 will rotate following the transmission rod 6. At the same time, the driven sprocket 23 will rotate following the driving sprocket 24 through the second chain 25, so that the rotating rod 21 rotates following the driven sprocket 23.

[0062] As a further solution of the present utility model, a retaining ring 202 is fixedly arranged inside the box body 2, and the retaining ring 202 is located above the first gear ring 12 and the first gear 13;

[0063] The net plate 17 is arranged in a "wizard hat" shape.

[0064] In this embodiment, due to the presence of the retaining ring 202, when adding molten metal into the box body 2, it will prevent the first gear ring 12 and the first gear 13 from contacting the molten metal, thereby avoiding being affected by the molten metal and shortening the service life;

[0065] Adopting the "wizard hat"-shaped net plate 17 can make the molten metal automatically disperse around when it falls onto the net plate 17, and then penetrate through the mesh holes and fall into the mold, so that the molten metal can fall into the mold more dispersedly.

[0066] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0067] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A metal liquid uniform injection device for lost foam casting, comprising a frame body (1), a box body (2) and a hollow tube (3), characterized in that, The box body (2) and the hollow tube (3) are respectively fixed on the frame body (1) at the top and the bottom; A driving mechanism is provided between the box body (2) and the hollow tube (3); a stirring assembly is provided inside the box body (2); the stirring assembly is connected to the driving mechanism via a first transmission structure; when the driving mechanism is in operation, the stirring assembly cooperates with the first transmission structure to uniformly stir the molten metal inside the box body (2); A liquid discharge pipe (201) is provided at the bottom of the box body (2), and a solenoid valve (4) is installed on the liquid discharge pipe (201); the molten metal in the box body (2) flows into the hollow tube (3) under the action of the liquid discharge pipe (201) and the solenoid valve (4); A discharge assembly is arranged in the hollow tube (3), and the discharge assembly is connected to the driving mechanism via a second transmission structure. The discharge assembly will discharge the molten metal in the hollow tube (3) uniformly under the interaction between the second transmission structure and the driving mechanism.

2. The uniform metal liquid injection device for lost foam casting according to claim 1, characterized in that, The driving mechanism comprises a fixing frame (5) fixedly arranged on the box body (2) and a transmission rod (6) vertically rotatably arranged on the fixing frame (5); A motor (7) is vertically fixedly mounted on the hollow tube (3), and one end of the transmission rod (6) is fixedly connected to the output end of the motor (7).

3. The metal liquid uniform injection device for lost foam casting according to claim 2, characterized in that, The stirring assembly comprises a horizontal plate (8) fixedly arranged on the top of the box body (2) and a rotating shaft (9) vertically rotatably arranged on the horizontal plate (8); A bracket (10) is rotatably arranged inside the box (2), the bottom end of the rotating shaft (9) is fixedly connected to the center of the bracket (10), and a plurality of stirring rods (11) are vertically rotatably arranged on the bracket (10); A first gear ring (12) is fixedly arranged inside the box body (2), and a first gear (13) is fixedly arranged at the top end of each of the plurality of stirring rods (11), and each of the plurality of first gears (13) is meshed with the first gear ring (12).

4. A molten metal uniform injection device for lost foam casting according to claim 3, characterized in that, The first transmission structure comprises a first sprocket (14) fixedly arranged on the rotating shaft (9) and a second sprocket (15) fixedly arranged on the transmission rod (6), and the first sprocket (14) and the second sprocket (15) are connected via a No. 1 chain (16).

5. The uniform metal liquid injection device for lost foam casting according to claim 3, characterized in that, The discharging assembly comprises a second gear ring (18) and a mesh plate (17) rotatably arranged in the hollow tube (3), and the second gear ring (18) and the mesh plate (17) are fixedly connected via a plurality of L-shaped rods (19); A U-shaped frame (20) is fixedly arranged on the hollow tube (3), a rotating rod (21) is rotatably arranged inside the U-shaped frame (20), a second gear (22) is fixedly arranged at one end of the rotating rod (21), and the second gear (22) is meshed with the second gear ring (18).

6. The metal liquid uniform injection device for lost foam casting according to claim 5, characterized in that, The second transmission structure includes a driven sprocket wheel (23) fixedly arranged at the other end of the rotating rod (21) and a driving sprocket wheel (24) fixedly arranged on the transmission rod (6), and the driving sprocket wheel (24) and the driven sprocket wheel (23) are connected by a second chain (25).

7. A molten metal uniform injection device for lost foam casting according to claim 5, characterized in that, A retaining ring (202) is fixedly arranged inside the box body (2), and the retaining ring (202) is located above the first gear ring (12) and the first gear (13); The net plate (17) is arranged in a shape of a "wizard hat".

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