Sand mixing device for foundry machining equipment

Abstract

The utility model discloses a kind of sand mixing devices of casting mechanical processing equipment, it includes mounting bracket, the side fixed connection of mounting bracket has unloading motor and gear reducer, mixing mechanism is equipped in the mounting bracket, the both sides symmetrical welding of mixing mechanism are pivot, the above of mixing mechanism is equipped with crushing mechanism, the just above of crushing mechanism is equipped with connecting plate, the both sides of connecting plate are respectively fixedly connected with supporting plate, the upper end of connecting plate is fixedly connected with two first electric push rods symmetrically, the lower end of mounting bracket four corners is respectively fixedly connected with ground anchor. Through unloading motor to mixing mechanism shake, cooperate the mixing of mixing mechanism to material to improve the uniformity of mixing, and unloading motor can make mixing mechanism tilt to unload, first electric push rod improves the ascending of crushing mechanism and moves away from mixing mechanism, it is convenient to clean in device.

Description

Technical Field

[0001] This utility model relates to the field of casting equipment technology, and in particular to a sand mixing device for casting machining equipment. Background Technology

[0002] A sand mixer is a device that uniformly mixes the components in molding sand and effectively coats the sand particles with binder. It is the main equipment for casting sand processing and molding sand mixing, and a key piece of equipment for obtaining qualified molding sand. The sand mixer utilizes the relative motion of a grinding wheel and a grinding disc to crush the material placed between them, thus simultaneously crushing and mixing the materials.

[0003] Widely used sand mixing equipment mainly includes roller-type sand mixers, rotor-type sand mixers, and blade-type sand mixers. Among them, roller-type sand mixers have high energy consumption, low sand mixing efficiency, and inconvenient unloading. In addition, the rollers and base plates experience severe wear, resulting in high maintenance costs. Rotor-type sand mixers rely heavily on impact and scattering during the mixing process. For clay sand that requires thorough kneading, there are sometimes "dead corners" in the mixing process, leading to uneven coating of the binder film and the presence of unevenly moistened "dough-like" lumps in some areas, which affects the overall performance of the molding sand. Blade-type sand mixers have a simple structure, but in the mixing of high-density, high-viscosity molding sand, they are prone to generating huge resistance, resulting in excessive motor load, rapid wear of the mixing blades, and difficulty in ensuring uniformity.

[0004] As mentioned above, sand mixing equipment mainly suffers from problems such as insufficient mixing uniformity and difficulties in cleaning and unloading. Utility Model Content

[0005] The purpose of this utility model is to provide a sand mixing device for casting machining equipment, which can improve the uniformity of material mixing and facilitate unloading and cleaning of the sand mixing device.

[0006] To achieve the above objectives, a sand mixing device for casting machining equipment is provided, comprising a mounting frame. A discharge motor and a gear reducer are fixedly connected to one side of the mounting frame, and the output shaft of the discharge motor and the input shaft of the gear reducer are fixedly connected via a coupling. A mixing mechanism is provided in the mounting frame, and rotating shafts are symmetrically welded to both sides of the mixing mechanism, with the rotating shafts passing through the mounting frame. The rotating shafts are rotatably connected to the mounting frame via bearings. The output shaft of the gear reducer is fixedly connected to one end of the rotating shaft via a coupling. A crushing mechanism is provided above the mixing mechanism, and a connecting plate is provided directly above the crushing mechanism. Support plates are fixedly connected to both sides of the connecting plate, and the lower end of the support plate is fixedly connected to the mounting frame. Two first electric push rods are symmetrically fixedly connected to the upper end of the connecting plate, and the piston rods of the first electric push rods pass downward through the connecting plate and are slidably connected to the connecting plate. The two first electric push rods share a power source using a linkage drive. The lower end of the piston rod of the first electric push rod is fixedly connected to the crushing mechanism. Foot plates are fixedly connected to the four corners of the lower end of the mounting frame. It can improve the uniformity of material mixing in sand mixing equipment and facilitate the unloading and cleaning of sand mixing device.

[0007] According to the sand mixing device of the casting machining equipment, the mounting frame consists of a mounting plate and a base. Two mounting plates are symmetrically and fixedly connected to the upper end of the base. A support plate is located between the support plates on both sides of the connecting plate, and its lower end is fixedly connected to the base. The unloading motor and gear reducer are mounted on the surface of the mounting plate. Two fixing plates are bolted to the upper end of the base, and the fixing plates are located between the two mounting plates. Position sensors are fixedly connected to the opposite ends of the two fixing plates, and the output ends of the position sensors penetrate through the fixing plates. A plurality of bolt holes, equidistant from each other, are provided on the upper surface of the base to mate with the bolts. The position sensors detect when the mixing mechanism tilts to a certain angle. The arrangement of the bolt holes can change the distance between the two fixing plates, thereby controlling the swaying amplitude of the mixing mechanism.

[0008] According to the aforementioned sand mixing device of a casting machining equipment, the mixing mechanism comprises a mixing tank, a first drive shaft, a stirring motor, stirring rods, and a first support frame. The rotating shaft is welded to the outside of the mixing tank. One end of the mixing tank is welded with a discharge pipe communicating with the mixing tank, and the discharge pipe is located between the rotating shafts. The stirring motor is fixedly connected to the lower middle part of the mixing tank, and the output shaft of the stirring motor passes upward through the mixing tank. The output shaft of the stirring motor is rotatably connected to the mixing tank through a bearing. The first drive shaft is located in the middle of the mixing tank, and the lower end of the first drive shaft is fixedly connected to the output shaft of the stirring motor through a coupling. The stirring rods are equidistantly installed on the surface of the first drive shaft. The first support frame is fixedly connected to the inner wall of the mixing tank, and the upper end of the first drive shaft passes through the middle of the first support frame and is rotatably connected to the first support frame through a bearing. A detection plate is fixedly connected to the lower end of the mixing tank, and the detection plate is located between two fixed plates. The stirring motor controls the rotation of the first drive shaft, causing the stirring rods to mix the materials.

[0009] According to the aforementioned sand mixing device of a foundry machining equipment, the crushing mechanism comprises a connecting frame, a housing, a grinding disc, a second support frame, a third support frame, a grinding motor, and a second transmission shaft. The housing is positioned above the mixing tank and is vertically continuous. The connecting frame is symmetrically and fixedly connected to both sides of the housing, and the lower end of the piston rod of the first electric push rod is fixedly connected to the connecting frame. The grinding disc is disposed within the housing. The second and third support frames are disposed on the inner wall of the housing and fixedly connected to the housing. The second support frame is located at the bottom of the housing and supports the grinding disc. The third support frame is located at the top of the housing. The grinding motor is fixedly connected to the upper end of the second support frame, and the output shaft of the grinding motor passes downward through the second support frame. The lower end of the output shaft of the grinding motor is fixedly connected to the second transmission shaft via a coupling, and the second transmission shaft passes through the middle of the grinding disc and is keyed to the grinding disc. The lower end of the second transmission shaft passes through the second support frame and is rotatably connected to the second support frame. The grinding motor drives the grinding disc to rotate within the housing, and the grinding disc and housing cooperate to crush the material.

[0010] According to the sand mixing device of the casting machining equipment, the top of the grinding disc is a conical structure, and the gap between the outer side of the grinding disc and the inner wall of the housing gradually narrows downwards. This prevents material from remaining on the top of the grinding disc and gradually grinds larger particles.

[0011] According to the sand mixing device of the casting machining equipment, a second electric push rod is provided above the discharge pipe, and the second electric push rod is fixedly connected to the surface of the mixing barrel. A baffle plate is fixedly connected to the piston rod of the second electric push rod, and the baffle plate is inserted downward into the discharge pipe and slidably connected to the discharge pipe. The baffle plate seals the end of the discharge pipe connected to the mixing barrel. The second electric push rod, in conjunction with the baffle plate, controls the flow of the discharge pipe.

[0012] According to the sand mixing device of the casting machining equipment, a controller is fixedly connected to the upper end of the connecting plate. The controller controls the operation of the electrical components in the device.

[0013] According to the sand mixing device of the casting machining equipment, an encoder is installed on the output shaft of the gear reducer. The encoder detects the rotation angle of the output shaft of the gear reducer, thereby controlling the tilt angle of the mixing mechanism to facilitate unloading.

[0014] The above-mentioned solution has the following beneficial effects:

[0015] The unloading motor shakes the mixing mechanism, which in turn stirs the materials to improve the uniformity of the mixture. The unloading motor can also tilt the mixing mechanism to unload the materials. The first electric push rod lifts the crushing mechanism away from the mixing mechanism, making it easier to clean the inside of the device.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a first-view overall structural diagram of the sand mixing device of a casting machining equipment according to this utility model.

[0019] Figure 2 This is a second-view overall structural diagram of the sand mixing device of a casting machining equipment according to this utility model.

[0020] Figure 3 This is a cross-sectional view of the mounting frame of the sand mixing device for a casting machining equipment according to this utility model;

[0021] Figure 4 This is a cross-sectional view of the mixing mechanism of a sand mixing device for a casting machining equipment according to this utility model;

[0022] Figure 5 This is a cross-sectional view of the crushing mechanism of the sand mixing device in a casting machining equipment according to this utility model.

[0023] Legend:

[0024] 1. First electric push rod; 2. Support plate; 3. Mounting frame; 4. Foot; 5. Mixing mechanism; 6. Discharge motor; 7. Gear reducer; 8. Crushing mechanism; 9. Connecting plate; 10. Controller; 11. Mounting plate; 12. Base; 13. Fixing plate; 14. Position sensor; 15. Mixing tank; 16. First drive shaft; 17. Second electric push rod; 18. Discharge pipe; 19. Baffle plate; 20. Stirring motor; 21. Detection plate; 22. Stirring rod; 23. First support frame; 24. Connecting frame; 25. Housing; 26. Grinding disc; 27. Second support frame; 28. Third support frame; 29. ​​Grinding motor; 30. Second drive shaft. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-5 This utility model discloses a sand mixing device for a casting machining equipment, comprising a mounting frame 3. A discharge motor 6 and a gear reducer 7 are fixedly connected to one side of the mounting frame 3, and the output shaft of the discharge motor 6 is fixedly connected to the input shaft of the gear reducer 7 via a coupling. A mixing mechanism 5 is provided within the mounting frame 3, with rotating shafts symmetrically welded to both sides of the mixing mechanism 5. These rotating shafts pass through the mounting frame 3 and are rotatably connected to the mounting frame 3 via bearings. The output shaft of the gear reducer 7 is fixedly connected to one end of the rotating shaft via a coupling. A [missing information - likely a design feature] is provided above the mixing mechanism 5. The crushing mechanism 8 has a connecting plate 9 directly above it. Support plates 2 are fixedly connected to both sides of the connecting plate 9, and the lower end of the support plate 2 is fixedly connected to the mounting frame 3. Two first electric push rods 1 are symmetrically fixedly connected to the upper end of the connecting plate 9, and the piston rod of the first electric push rod 1 passes through the connecting plate 9 and slides through the connecting plate 9. The two first electric push rods 1 share a power source through linkage transmission. The lower end of the piston rod of the first electric push rod 1 is fixedly connected to the crushing mechanism 8. Foot 4 is fixedly connected to the four corners of the lower end of the mounting frame 3.

[0027] The mounting frame 3 consists of a mounting plate 11 and a base 12. Two mounting plates 11 are symmetrically and fixedly connected to the upper end of the base 12. A support plate 2 is located between the support plates 2 on both sides of the connecting plate 9, and its lower end is fixedly connected to the base 12. A discharge motor 6 and a gear reducer 7 are mounted on the surface of the mounting plate 11. Two fixing plates 13 are bolted to the upper end of the base 12, and the fixing plates 13 are located between the two mounting plates 11. Position sensors 14 are fixedly connected to the opposite ends of the two fixing plates 13, and the output end of the position sensors 14 passes through the fixing plates 13. Several bolt holes, equidistant from each other, are provided on the upper surface of the base 12 to mate with the bolts. The position sensors 14 detect when the mixing mechanism 5 tilts to a certain angle. The arrangement of the bolt holes can change the distance between the two fixing plates 13, thereby controlling the swaying amplitude of the mixing mechanism 5.

[0028] The mixing mechanism 5 consists of a mixing tank 15, a first drive shaft 16, a stirring motor 20, a stirring rod 22, and a first support frame 23. The rotating shaft is welded to the outside of the mixing tank 15. One end of the mixing tank 15 is welded with a discharge pipe 18 that connects to the mixing tank 15, and the discharge pipe 18 is located between the rotating shafts. The stirring motor 20 is fixedly connected to the middle of the lower end of the mixing tank 15, and the output shaft of the stirring motor 20 passes through the mixing tank 15 upwards. The output shaft of the stirring motor 20 is rotatably connected to the mixing tank 15 through a bearing. The first drive shaft 16 is located in the middle of the mixing tank 15, and the lower end of the first drive shaft 16 is fixedly connected to the output shaft of the stirring motor 20 through a coupling. The stirring rod 22 is equidistantly installed on the surface of the first drive shaft 16. The first support frame 23 is fixedly connected to the inner wall of the mixing tank 15, and the upper end of the first drive shaft 16 passes through the middle of the first support frame 23 and is rotatably connected to the first support frame 23 through a bearing. A detection plate 21 is fixedly connected to the lower end of the mixing tank 15, and the detection plate 21 is located between two fixed plates 13. The stirring motor 20 controls the first drive shaft 16 to rotate, causing the stirring rod 22 to mix the materials.

[0029] The crushing mechanism 8 consists of a connecting frame 24, a housing 25, a grinding disc 26, a second support frame 27, a third support frame 28, a grinding motor 29, and a second drive shaft 30. The housing 25 is located above the mixing tank 15 and is vertically continuous. The connecting frame 24 is symmetrically and fixedly connected to both sides of the housing 25, and the lower end of the piston rod of the first electric push rod 1 is fixedly connected to the connecting frame 24. The grinding disc 26 is located inside the housing 25. The second support frame 27 and the third support frame 28 are located on the inner wall of the housing 25 and are fixedly connected to the housing 25. The second support frame 27 is located at the bottom of the housing 25, and the second support... A second support frame 27 supports the grinding disc 26. A third support frame 28 is located at the top of the housing 25. A grinding motor 29 is fixedly connected to the upper end of the second support frame 27, and the output shaft of the grinding motor 29 passes downward through the second support frame 27. The lower end of the output shaft of the grinding motor 29 is fixedly connected to the second drive shaft 30 via a coupling. The second drive shaft 30 passes through the middle of the grinding disc 26 and is keyed to the grinding disc 26. The lower end of the second drive shaft 30 passes through the second support frame 27 and is rotatably connected to the second support frame 27. The second support frame 27 and the third support frame 28 are rotatably connected to the second drive shaft 30 via bearings. The grinding motor 29 drives the grinding disc 26 to rotate inside the housing 25, and the grinding disc 26 cooperates with the housing 25 to crush the material.

[0030] The top of the grinding disc 26 has a conical structure, and the gap between the outer side of the grinding disc 26 and the inner wall of the housing 25 gradually narrows downwards. This prevents material from remaining on the top of the grinding disc 26 and gradually grinds larger particles.

[0031] A second electric push rod 17 is provided above the discharge pipe 18, and the second electric push rod 17 is fixedly connected to the surface of the mixing tank 15. The piston rod of the second electric push rod 17 is fixedly connected to a baffle plate 19, and the baffle plate 19 is inserted downward into the discharge pipe 18 and slidably connected to the discharge pipe 18, sealing the end of the discharge pipe 18 that connects to the mixing tank 15. The second electric push rod 17, in conjunction with the baffle plate 19, controls the flow of the discharge pipe 18.

[0032] A controller 10 is fixedly connected to the upper end of the connecting plate 9. The controller 10 controls the operation of the electrical components in the device.

[0033] An encoder is installed on the output shaft of the gear reducer 7. The encoder detects the rotation angle of the output shaft of the gear reducer 7, thereby controlling the tilt angle of the mixing mechanism 5 to facilitate unloading.

[0034] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select a suitable controller 10 according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the working principle described below, and the electrical connection should be completed by the sequential working order of each electrical component. The detailed connection method is well known in the art. The following mainly introduces the working principle and process, and will not explain the electrical control.

[0035] Working principle: During use, the mixing mechanism 5 is perpendicular to the base 12, and the first electric push rod 1 is fully extended, pushing the crushing mechanism 8 to contact the top of the mixing barrel 15. The material is added into the housing 25 from above the crushing mechanism 8. The grinding motor 29 drives the grinding disc 26 to rotate inside the housing 25. The grinding disc 26 and the housing 25 cooperate to crush the material. The crushed material enters the mixing barrel 15. After crushing, the piston rod of the first electric push rod 1 retracts, causing the crushing mechanism 8 to move above the mixing barrel 15. Then, a binder is added to the mixing barrel 15. The stirring motor 20 controls the first drive shaft 16 to rotate, causing the stirring rod 22 to mix the material. Simultaneously, the output shaft of the unloading motor 6 rotates, and the torque is increased by the gear reducer 7, causing the mixing drum 15 to shake. When the mixing drum 15 tilts to one side at a certain angle, the detection plate 21 is detected by the positioning sensor 14, and the stirring motor 20 reverses to tilt the mixing drum 15 to the other side until the detection plate 21 is detected by the positioning sensor 14 again, so that the material in the mixing drum 15 is mixed evenly. During unloading, the stirring motor 20 controls the first drive shaft 16 to rotate, so that the discharge pipe 18 on the surface of the mixing drum 15 is vertically downward, and the second electric push rod 17 raises the height of the baffle plate 19, so that the material is discharged from the mixing drum 15 through the discharge pipe 18.

[0036] In the description of this utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. At the same time, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "fixed installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A sand mixing device for casting machining equipment, comprising: The mounting frame is characterized in that a discharge motor and a gear reducer are fixedly connected to one side of the mounting frame, and the output shaft of the discharge motor and the input shaft of the gear reducer are fixedly connected by a coupling. The mounting frame is provided with a mixing mechanism, and rotating shafts are symmetrically welded to both sides of the mixing mechanism. The rotating shafts pass through the mounting frame and are rotatably connected to the mounting frame through bearings. The output shaft of the gear reducer is fixedly connected to one end of the rotating shaft through a coupling. A crushing mechanism is provided above the mixing mechanism, and a connecting plate is provided directly above the crushing mechanism. Support plates are fixedly connected to both sides of the connecting plate, and the lower end of the support plate is fixedly connected to the mounting frame. Two first electric push rods are symmetrically fixedly connected to the upper end of the connecting plate, and the piston rods of the first electric push rods pass downward through the connecting plate and are slidably connected to the connecting plate. The two first electric push rods share a power source using a linkage drive. The lower end of the piston rod of the first electric push rod is fixedly connected to the crushing mechanism. Foot plates are fixedly connected to the four corners of the lower end of the mounting frame.

2. The sand mixing device for a casting machining equipment according to claim 1, characterized in that, The mounting frame consists of a mounting plate and a base. Two mounting plates are symmetrically and fixedly connected to the upper end of the base. The support plate is located between the support plates on both sides of the connecting plate, and the lower end of the support plate is fixedly connected to the base. The unloading motor and gear reducer are mounted on the surface of the mounting plate. Two fixing plates are bolted to the upper end of the base, and the fixing plates are located between the two mounting plates. Position sensors are fixedly connected to the opposite ends of the two fixing plates, and the output end of the position sensor passes through the fixing plate. Several screw holes that mate with bolts are equally spaced on the upper surface of the base.

3. The sand mixing device for a casting machining equipment according to claim 1, characterized in that, The mixing mechanism consists of a mixing tank, a first drive shaft, a stirring motor, stirring rods, and a first support frame. The rotating shaft is welded to the outside of the mixing tank. One end of the mixing tank is welded with a discharge pipe that connects to the mixing tank, and the discharge pipe is located between the rotating shafts. The stirring motor is fixedly connected to the middle of the lower end of the mixing tank, and the output shaft of the stirring motor passes through the mixing tank upwards. The output shaft of the stirring motor is rotatably connected to the mixing tank through a bearing. The first drive shaft is located in the middle of the mixing tank, and the lower end of the first drive shaft is fixedly connected to the output shaft of the stirring motor through a coupling. The stirring rods are equidistantly installed on the surface of the first drive shaft. The first support frame is fixedly connected to the inner wall of the mixing tank, and the upper end of the first drive shaft passes through the middle of the first support frame and is rotatably connected to the first support frame through a bearing. A detection plate is fixedly connected to the lower end of the mixing tank, and the detection plate is located between two fixed plates.

4. The sand mixing device for a casting machining equipment according to claim 3, characterized in that, The pulverizing mechanism consists of a connecting frame, a housing, a grinding disc, a second support frame, a third support frame, a grinding motor, and a second drive shaft. The housing is located above the mixing tank and is vertically continuous. The connecting frame is symmetrically fixedly connected to both sides of the housing, and the lower end of the piston rod of the first electric push rod is fixedly connected to the connecting frame. The grinding disc is located inside the housing. The second and third support frames are located on the inner wall of the housing and are fixedly connected to the housing. The second support frame is located at the bottom of the housing and supports the grinding disc. The third support frame is located at the top of the housing. The grinding motor is fixedly connected to the upper end of the second support frame, and the output shaft of the grinding motor passes downward through the second support frame. The lower end of the output shaft of the grinding motor is fixedly connected to the second drive shaft through a coupling, and the second drive shaft passes through the middle of the grinding disc and is keyed to the grinding disc. The lower end of the second drive shaft passes through the second support frame and is rotatably connected to the second support frame.

5. The sand mixing device for a casting machining equipment according to claim 4, characterized in that, The top of the grinding disc is a conical structure, and the gap between the outer side of the grinding disc and the inner wall of the housing gradually narrows downwards.

6. The sand mixing device for a casting machining equipment according to claim 3, characterized in that, A second electric push rod is provided above the discharge pipe, and the second electric push rod is fixedly connected to the surface of the mixing tank. The piston rod of the second electric push rod is fixedly connected to a baffle plate, and the baffle plate is inserted downward into the discharge pipe and slidably connected to the discharge pipe. The baffle plate seals the end of the discharge pipe connected to the mixing tank.

7. The sand mixing device for a casting machining equipment according to claim 1, characterized in that, A controller is fixedly connected to the upper end of the connecting plate.

8. The sand mixing device for a casting machining equipment according to claim 1, characterized in that, An encoder is installed on the output shaft of the gear reducer.

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