Resin sand casting equipment with screening function

Abstract

The utility model relates to the technical field of casting equipment, and discloses resin sand casting equipment with a screening function, which comprises a sand mixing tank, two vertical plates are arranged at the top of the sand mixing tank, a screening box is arranged between the opposite sides of the two vertical plates, a screening mechanism is arranged in the screening box, and the screening mechanism is connected with the sand mixing tank. And the screening mechanism comprises a square frame, two top plates, four telescopic rods, four compression springs, two movable plates, a mounting assembly, a filter plate and a driving assembly. By arranging the square frame, the movable plate, the filter plate and the mounting assembly, resin sand to be mixed can be screened and filtered, the particle size of the resin sand is ensured to meet the production requirement, and the situation that the quality of cast parts is easily affected by the resin sand with large diameter in the casting process is avoided; and through a telescopic rod, a compression spring and a driving assembly, the screening effect of the filter plate is improved.

Description

Technical Field

[0001] This utility model relates to the field of casting equipment technology, and in particular to a resin sand casting equipment with a screening function. Background Technology

[0002] Resin sand refers to molding sand or core sand that uses synthetic resin as a binder for sand particles. After the mold or core is made from resin sand, the resin undergoes an irreversible cross-linking reaction and solidifies through the action of a curing agent, thereby giving the mold or core the necessary strength.

[0003] Existing resin sand generally needs to be stirred and mixed before being fed into the mold for casting. However, it is not screened or filtered before mixing. Due to the manufacturing process and equipment of resin sand, the particle diameter of the resin sand will vary. Resin sand with a larger diameter can easily affect the quality of the cast parts during the casting process, resulting in parts that do not meet the user's requirements. Therefore, a resin sand casting equipment with screening function is proposed to solve the above problems. Utility Model Content

[0004] (a) Purpose of the utility model

[0005] To address the technical problems existing in the background art, this utility model proposes a resin sand casting equipment with a screening function. By setting up a square frame, a movable plate, a filter plate, and installation components, the resin sand to be mixed can be screened and filtered to ensure that the particle size of the resin sand meets the production requirements. This avoids the problem that resin sand with a larger diameter can easily affect the quality of the cast parts during the casting process, resulting in parts that do not meet the requirements. It has the advantages of being able to screen resin sand.

[0006] (II) Technical Solution

[0007] This utility model provides a resin sand casting equipment with screening function, including a sand mixing tank. The top of the sand mixing tank is provided with two vertical plates, and a screening box is provided between the opposite sides of the two vertical plates. The screening box is provided with a screening mechanism.

[0008] The screening mechanism includes a square frame, two top plates, four telescopic rods, four compression springs, two movable plates, a mounting assembly, a filter plate, and a drive assembly. The square frame is located inside the screening box. The two top plates are respectively located on the left and right side walls of the inner cavity of the square frame. The four telescopic rods are respectively located at the bottom of the two top plates. The four compression springs are respectively located at the bottom of the two top plates and on the outside of the four telescopic rods. The two movable plates are respectively located at the bottom of the two left telescopic rods and the two right telescopic rods. The bottom of the compression springs is connected to the top of the movable plates. The opposite sides of the two movable plates are respectively connected to the left and right sides of the square frame. The filter plate is slidably connected to the front of the square frame and extends into its interior. The mounting assembly is located on the front of the filter plate, and the output end of the mounting assembly is connected to the square frame. The drive assembly is located on the outer end face of the screening box, and the output end of the drive assembly is connected to the movable plates.

[0009] Preferably, the drive assembly includes a dual-head DC motor, two fixed plates, two rotating rods, two L-shaped plates, two rotating shafts, two eccentric wheels, and a transmission module. The dual-head DC motor is located on the back of the screening box. The two fixed plates are both located on the back of the screening box and are respectively located on the left and right sides of the dual-head DC motor. The two rotating rods are respectively located on the two output shafts of the dual-head DC motor and extend to opposite sides of the two fixed plates. The two L-shaped plates are respectively located on the left and right sides of the screening box. The two rotating shafts are respectively located on opposite side walls of the inner cavities of the two L-shaped plates and extend into the interior of the screening box. The two eccentric wheels are respectively located at opposite ends of the two rotating shafts, and the outer edges of the two eccentric wheels are respectively in contact with the bottom of the two movable plates. The transmission module is located on the outside of the rotating rods.

[0010] Preferably, the transmission module includes two active transmission wheels, two passive transmission wheels, and two transmission belts. The two active transmission wheels are respectively located on the outer sides of the two rotating rods, and the two passive transmission wheels are respectively located on the outer sides of the two rotating shafts. The transmission belts are connected between the outer surfaces of the active transmission wheels and the passive transmission wheels on the same side. The diameter of the active transmission wheels is larger than the diameter of the passive transmission wheels.

[0011] Preferably, the mounting assembly includes a mounting plate, a handle, fixing bolts, a support module, and a door. The mounting plate is located on the front of the filter plate, the handle is located on the front of the mounting plate, the fixing bolts are located on the front of the mounting plate and extend into the interior of the square frame, the fixing bolts are threadedly connected to the square frame, the support module is located on the left and right sides of the filter plate, and the door is hinged to the front of the screening box via hinges. The door corresponds to the mounting plate and its height is greater than the height of the mounting plate.

[0012] Preferably, the support module includes two support blocks and two support grooves. The two support grooves are respectively opened on the left and right side walls of the inner cavity of the square frame. The front of the two support grooves is connected to the outside. The two support blocks are respectively disposed on the left and right sides of the filter plate. The two support blocks are slidably connected to the inside of the two support grooves.

[0013] Preferably, the bottom of the screening box is connected to a connecting pipe that is connected to the inside of the sand mixing tank at one end. The sand mixing tank is equipped with a mixing mechanism inside. Two support plates are provided on the outside of the sand mixing tank. The bottom of the sand mixing tank is connected to a sand outlet pipe, and a valve is provided inside the sand outlet pipe.

[0014] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0015] This resin sand casting equipment with screening function can screen and filter the resin sand to be mixed by setting up a square frame, movable plate, filter plate and installation components. It can ensure that the particle size of the resin sand meets the production requirements and avoid the problem that large diameter resin sand can easily affect the quality of the cast parts and cause the parts to fail to meet the requirements. The telescopic rod, compression spring and drive component can make the filter plate and the resin sand above it move up and down, thereby improving the screening effect of the filter plate and avoiding the accumulation of resin sand and clogging of the filter plate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a resin sand casting equipment with screening function proposed in this utility model.

[0017] Figure 2 This is a first cross-sectional view of the screening box and screening mechanism in a resin sand casting equipment with screening function proposed in this utility model.

[0018] Figure 3 This is a second sectional view of the screening box and screening mechanism in a resin sand casting equipment with screening function proposed in this utility model.

[0019] Figure 4This utility model proposes a resin sand casting equipment with screening function. Figure 2 A magnified view of A in the middle.

[0020] Figure 5 This is a rear view of the screening box and screening mechanism in a resin sand casting equipment with screening function proposed in this utility model.

[0021] Reference numerals: 1. Sand mixing tank; 2. Vertical plate; 3. Screening box; 4. Screening mechanism; 41. Square frame; 42. Top plate; 43. Telescopic rod; 44. Compression spring; 45. Movable plate; 46. Mounting assembly; 461. Mounting plate; 462. Handle; 463. Fixing bolt; 464. Support module; 465. Box door; 47. Filter plate; 48. Drive assembly; 481. Dual-head DC motor; 482. Fixing plate; 483. Rotating rod; 484. L-shaped plate; 485. Rotating shaft; 486. Eccentric wheel; 487. Transmission module; 4871. Driven transmission wheel; 4872. Driven transmission wheel; 4873. Transmission belt; 5. Connecting pipe; 6. Mixing mechanism; 7. Support plate; 8. Sand outlet pipe. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, such as welding, riveting, or bonding; it can also be a detachable connection, such as threaded connection, keyed connection, or pin connection; or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] like Figure 1-5 As shown, the present invention proposes a resin sand casting equipment with screening function, including a sand mixing tank 1, two vertical plates 2 on the top of the sand mixing tank 1, a screening box 3 between the opposite sides of the two vertical plates 2, and a screening mechanism 4 inside the screening box 3.

[0026] In this utility model, the screening box 3 can be installed through two vertical plates 2, and the resin sand can be screened through the screening box 3 and the screening mechanism 4. After screening, the resin sand can be mixed through the sand mixing tank 1 to prevent the resin sand from being used for casting.

[0027] In an optional embodiment, the screening mechanism 4 includes a square frame 41, two top plates 42, four telescopic rods 43, four compression springs 44, two movable plates 45, a mounting assembly 46, a filter plate 47, and a drive assembly 48. The square frame 41 is located inside the screening box 3. The two top plates 42 are respectively located on the left and right side walls of the inner cavity of the square frame 41. The four telescopic rods 43 are respectively located at the bottom of the two top plates 42. The four compression springs 44 are respectively located at the bottom of the two top plates 42 and are located on the outside of the four telescopic rods 43. The two movable plates 45... Plates 45 are respectively located at the bottom of the two telescopic rods 43 on the left and the two on the right. The bottom of the compression spring 44 is connected to the top of the movable plate 45. The opposite sides of the two movable plates 45 are respectively connected to the left and right sides of the square frame 41. The filter plate 47 is slidably connected to the front of the square frame 41 and extends into it. The mounting assembly 46 is located on the front of the filter plate 47. The output end of the mounting assembly 46 is connected to the square frame 41. The drive assembly 48 is located on the outer end face of the screening box 3. The output end of the drive assembly 48 is connected to the movable plate 45.

[0028] It should be noted that during the screening of resin sand, the resin sand is placed inside the square frame 41 and screened by the filter plate 47 inside the square frame 41. During screening, in order to improve the screening efficiency of the filter plate 47, the drive assembly 48 can drive two movable plates 45 to move upward. The two movable plates 45 can drive the square frame 41 to move upward, and the square frame 41 will drive the resin sand and filter plate 47 inside it to move upward. At this time, the movable plates 45 will squeeze the corresponding compression springs 44. When the drive assembly 48 loses its drive on the two movable plates 45, the movable plates 45, the square frame 41 and the filter plate 47 will move downward under the action of their own gravity and the rebound force of the compression springs 44. Through the intermittent drive of the two movable plates 45 by the drive assembly 48, the movable plates 45, the square frame 41 and the filter plate 47 can move up and down, thereby shaking the filter plate 47 and the resin sand above it, preventing the resin sand from accumulating, and greatly improving the screening efficiency of the filter plate 47.

[0029] In addition, the stability of the two movable plates 45 can be ensured by the four telescopic rods 43 and the four compression springs 44, which in turn can further ensure the stability of the square frame 41 and the filter plate 47.

[0030] In an optional embodiment, the drive assembly 48 includes a dual-head DC motor 481, two fixed plates 482, two rotating rods 483, two L-shaped plates 484, two rotating shafts 485, two eccentric wheels 486, and a transmission module 487. The dual-head DC motor 481 is located on the back of the screening box 3. The two fixed plates 482 are both located on the back of the screening box 3 and are respectively located on the left and right sides of the dual-head DC motor 481. The two rotating rods 483 are respectively located on the two output shafts of the dual-head DC motor 481 and extend to the opposite side of the two fixed plates 482. The two L-shaped plates 484 are respectively located on the left and right sides of the screening box 3. The two rotating shafts 485 are respectively located on the opposite sidewall of the inner cavity of the two L-shaped plates 484 and extend into the interior of the screening box 3. The two eccentric wheels 486 are respectively located at the opposite end of the two rotating shafts 485. The outer edges of the two eccentric wheels 486 are respectively in contact with the bottom of the two movable plates 45. The transmission module 487 is located on the outside of the rotating rods 483.

[0031] It should be noted that when the dual-head DC motor 481 is started, the two output shafts of the dual-head DC motor 481 will drive the two rotating rods 483 to rotate respectively. Under the action of the transmission module 487, the two rotating rods 483 will drive the two rotating shafts 485 to rotate respectively. The two rotating shafts 485 will drive the two eccentric wheels 486 to rotate respectively. The two fixed plates 482 can support the two rotating rods 483 respectively to ensure the stability of the rotation of the two rotating rods 483. The two L-shaped plates 484 can support the two rotating shafts 485 respectively to ensure the stability of the rotation of the two rotating shafts 485.

[0032] In addition, when the two eccentric wheels 486 rotate from the bottom to the top, the outer edges of the two eccentric wheels 486 will press against the two movable plates 45 respectively, causing the two movable plates 45 to move upward. When the two eccentric wheels 486 move from the top to the bottom, the two eccentric wheels 486 will gradually lose pressure on the two movable plates 45, and the two movable plates 45 will move downward under the action of their own gravity and the rebound force of the compression spring 44.

[0033] In an optional embodiment, the transmission module 487 includes two driving transmission wheels 4871, two driven transmission wheels 4872, and two transmission belts 4873. The two driving transmission wheels 4871 are respectively located on the outer side of the two rotating rods 483, and the two driven transmission wheels 4872 are respectively located on the outer side of the two rotating shafts 485. The transmission belts 4873 are connected between the outer surfaces of the driving transmission wheels 4871 and the driven transmission wheels 4872 on the same side. The diameter of the driving transmission wheels 4871 is larger than the diameter of the driven transmission wheels 4872.

[0034] It should be noted that when the two rotating rods 483 rotate, they will drive the two driving transmission wheels 4871 to rotate respectively. Under the action of the transmission belt 4873, the two driving transmission wheels 4871 will drive the two driven transmission wheels 4872 to rotate respectively.

[0035] In addition, the diameter of the driving drive wheel 4871 is larger than the diameter of the driven drive wheel 4872, so that the transmission wrap angle is greater than or equal to 150 degrees, thereby ensuring the stability of the transmission between the driving drive wheel 4871 and the driven drive wheel 4872 and preventing the transmission belt 4873 from slipping during the transmission process.

[0036] In an optional embodiment, the mounting assembly 46 includes a mounting plate 461, a handle 462, a fixing bolt 463, a support module 464, and a door 465. The mounting plate 461 is located on the front of the filter plate 47, the handle 462 is located on the front of the mounting plate 461, the fixing bolt 463 is located on the front of the mounting plate 461 and extends into the interior of the square frame 41, and the fixing bolt 463 is threadedly connected to the square frame 41. The support module 464 is located on the left and right sides of the filter plate 47, and the door 465 is hinged to the front of the screening box 3 by a hinge. The door 465 corresponds to the mounting plate 461 and its height is greater than the height of the mounting plate 461.

[0037] It should be noted that when the filter plate 47 needs to be cleaned or replaced, open the box door 465, turn the fixing bolt 463 to disengage the fixing bolt 463 from the square frame 41, and then pull the mounting plate 461 forward through the handle 462. The mounting plate 461 will drive the filter plate 47 forward, thereby allowing the filter plate 47 to be disassembled for repair or replacement. The support module 464 can support the filter plate 47 to ensure its stability inside the square frame 41. A latch is provided between the top of the box door 465 and the front of the screening box 3 to ensure the stability of the box door 465 when closed.

[0038] In an optional embodiment, the support module 464 includes two support blocks and two support grooves. The two support grooves are respectively opened on the left and right side walls of the inner cavity of the square frame 41. The front of the two support grooves is connected to the outside. The two support blocks are respectively disposed on the left and right sides of the filter plate 47. The two support blocks are slidably connected to the inside of the two support grooves.

[0039] It should be noted that the filter plate 47 can be supported by two support blocks and two support grooves, ensuring the stability of the filter plate 47 inside the square frame 41, and also ensuring that the square frame 41 can drive the filter plate 47 to move.

[0040] In an optional embodiment, the bottom of the screening box 3 is connected to a connecting pipe 5 that is connected to the inside of the sand mixing tank 1. The sand mixing tank 1 is equipped with a mixing mechanism 6. Two support plates 7 are provided on the outside of the sand mixing tank 1. The bottom of the sand mixing tank 1 is connected to a sand outlet pipe 8, and a valve is provided inside the sand outlet pipe 8.

[0041] It should be noted that the screened resin sand can be fed into the mixing tank 1 through the connecting pipe 5. At the same time, it can be mixed by the mixing mechanism 6 to make the mixing more thorough. The mixing mechanism 6 includes a mixing motor, a mixing rod and multiple support rods. The mixing motor is located on the right side of the mixing tank 1. The mixing rod is located on the output shaft of the mixing motor and extends into the interior of the mixing tank 1. The multiple support rods are located on the outside of the mixing rod and are evenly distributed. By starting the mixing motor, the multiple support rods can be driven to rotate, thereby mixing the resin sand. The mixing tank 1 can be supported by two support plates 7. The mixed resin sand can be discharged through the sand discharge pipe 8.

[0042] In an optional embodiment, a controller is provided on the outside of the sand mixing tank 1. The dual-head DC motor 481 and the mixing motor are electrically connected to the controller, and the dual-head DC motor 481 and the mixing motor can be controlled by the controller.

[0043] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A resin sand casting device with screening function, comprising a sand mixing tank (1), characterized in that, The top of the sand mixing tank (1) is provided with two vertical plates (2), and a screening box (3) is provided between the opposite sides of the two vertical plates (2). The screening box (3) is provided with a screening mechanism (4). The screening mechanism (4) includes a square frame (41), two top plates (42), four telescopic rods (43), four compression springs (44), two movable plates (45), a mounting assembly (46), a filter plate (47), and a drive assembly (48). The square frame (41) is located inside the screening box (3). The two top plates (42) are respectively located on the left and right side walls of the inner cavity of the square frame (41). The four telescopic rods (43) are respectively located at the bottom of the two top plates (42). The four compression springs (44) are respectively located at the bottom of the two top plates (42) and are respectively located on the outside of the four telescopic rods (43). The two movable plates (45) are respectively located on the left and right side walls of the inner cavity of the square frame (41). The two telescopic rods (43) on the left and the two bottoms on the right are connected to the top of the movable plate (45). The opposite sides of the two movable plates (45) are connected to the left and right sides of the square frame (41). The filter plate (47) is slidably connected to the front of the square frame (41) and extends into it. The mounting assembly (46) is set on the front of the filter plate (47). The output end of the mounting assembly (46) is connected to the square frame (41). The driving assembly (48) is set on the outer end face of the screening box (3). The output end of the driving assembly (48) is connected to the movable plate (45).

2. The resin sand casting equipment with screening function according to claim 1, characterized in that, The drive assembly (48) includes a dual-head DC motor (481), two fixed plates (482), two rotating rods (483), two L-shaped plates (484), two rotating shafts (485), two eccentric wheels (486), and a transmission module (487). The dual-head DC motor (481) is located on the back of the screening box (3). The two fixed plates (482) are both located on the back of the screening box (3) and are respectively located on the left and right sides of the dual-head DC motor (481). The two rotating rods (483) are respectively located on the two output shafts of the dual-head DC motor (481). The two L-shaped plates (484) are respectively located on the left and right sides of the screening box (3). The two rotating shafts (485) are respectively located on the opposite side wall of the inner cavity of the two L-shaped plates (484) and extend into the interior of the screening box (3). The two eccentric wheels (486) are respectively located at the opposite end of the two rotating shafts (485). The outer edges of the two eccentric wheels (486) are respectively in contact with the bottom of the two movable plates (45). The transmission module (487) is located on the outside of the rotating rod (483).

3. The resin sand casting equipment with screening function according to claim 2, characterized in that, The transmission module (487) includes two active transmission wheels (4871), two driven transmission wheels (4872), and two transmission belts (4873). The two active transmission wheels (4871) are respectively located on the outer side of the two rotating rods (483), and the two driven transmission wheels (4872) are respectively located on the outer side of the two rotating shafts (485). The transmission belts (4873) are connected to the outer surfaces of the active transmission wheels (4871) and the driven transmission wheels (4872) on the same side. The diameter of the active transmission wheels (4871) is larger than the diameter of the driven transmission wheels (4872).

4. The resin sand casting equipment with screening function according to claim 1, characterized in that, The mounting assembly (46) includes a mounting plate (461), a handle (462), a fixing bolt (463), a support module (464), and a door (465). The mounting plate (461) is located on the front of the filter plate (47). The handle (462) is located on the front of the mounting plate (461). The fixing bolt (463) is located on the front of the mounting plate (461) and extends into the interior of the square frame (41). The fixing bolt (463) is threadedly connected to the square frame (41). The support module (464) is located on the left and right sides of the filter plate (47). The door (465) is hinged to the front of the screening box (3) by a hinge. The door (465) corresponds to the mounting plate (461) and its height is greater than that of the mounting plate (461).

5. A resin sand casting equipment with screening function according to claim 4, characterized in that, The support module (464) includes two support blocks and two support grooves. The two support grooves are respectively opened on the left and right side walls of the inner cavity of the square frame (41). The front of the two support grooves is connected to the outside. The two support blocks are respectively located on the left and right sides of the filter plate (47). The two support blocks are slidably connected to the inside of the two support grooves.

6. The resin sand casting equipment with screening function according to claim 1, characterized in that, The bottom of the screening box (3) is connected to a connecting pipe (5) that is connected to the inside of the sand mixing tank (1). The sand mixing tank (1) is equipped with a mixing mechanism (6). The outside of the sand mixing tank (1) is equipped with two support plates (7). The bottom of the sand mixing tank (1) is connected to a sand outlet pipe (8). The sand outlet pipe (8) is equipped with a valve.

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