A motor end cover casting device

Abstract

The present invention relates to the technical field of casting molding devices, and specifically to a motor end cover casting molding device, comprising: a conveying frame; a mounting frame arranged at the conveying frame; a sand mixing mechanism for mixing molding sand; and a pretreatment mechanism for pretreatment of the molding sand. The sand mixing mechanism comprises: a sand mixing box fixedly mounted on the mounting frame; a circular tube rotatably mounted in the sand mixing box; and a first spiral blade fixedly sleeved on the circular tube. In the present invention, the sand mixing mechanism can be used to stir the pretreated molding sand and its ingredients horizontally and vertically, thereby achieving comprehensive stirring of the molding sand and its ingredients in the sand mixing box, so that the molding sand and its ingredients in the sand mixing box are uniformly mixed as a whole, thereby improving the uniformity of the molding sand and its ingredients. After the molding sand and its ingredients are mixed, the molding sand and its ingredients can be quickly discharged.

Description

Technical Field

[0001] The invention relates to the technical field of casting molding devices, and in particular to a motor end cover casting molding device. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction, or converts one form of electrical energy into another. The motor is composed of a casing, a stator, a rotor and other parts. It rotates by generating different magnetic fields when the stator and rotor are energized. Generally, end covers are installed at both ends of the motor casing. The function of the end covers is to fix and support the rotating shaft in the rotor. The motor end covers are mostly made of metal and are usually cast during the production process.

[0003] Casting is a process of melting metal into liquid form, pouring it into a pre-made mold, and then cooling and solidifying it to obtain parts or blanks with a certain shape and size. In the casting process, molding sand or core sand is the raw material used to make castings or cores. It is generally composed of sand, binder and auxiliary materials. The quality of molding sand or core sand directly affects the quality of castings and production efficiency. Therefore, mixing molding sand or core sand is an important link in the casting process.

[0004] The Chinese patent application number CN202410267061.8 discloses a sand mixing equipment for casting processing, including a base, a loading component for loading raw materials required for sand mixing is provided on the upper right side of the base, a premixing component for preliminarily mixing the sand mixing raw materials is provided on the upper side of the base, and an auger for sand mixing is provided on the front side of the base. The present invention adopts a baffle plate and an insert plate to cooperate to discharge the same amount of raw materials into the interior of the mobile hopper, thereby ensuring that the amount of raw materials inside each mobile hopper is the same, and thus making the auger discharge more uniform. The invention adopts an active turntable to drive the mobile hopper to move along the straight section of the track plate at the same speed as the conveying speed of the auger, so that the mobile hopper can discharge the premixed raw materials into the interior of the auger when moving, thereby avoiding the spiral plate partition of the auger to separate the raw materials, thereby avoiding the different raw material ratios between various positions inside the auger, and ensuring the quality of sand mixing.

[0005] However, when existing equipment performs sand mixing, multiple raw materials are usually placed inside the equipment and mixed by stirring. However, during the sand mixing process, some raw materials will settle at the bottom of the equipment, resulting in the inability to effectively mix the raw materials, thereby affecting the mixing of the molding sand.

[0006] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the Invention

[0007] The object of the present invention is to provide a motor end cover casting device that can effectively solve the above technical problems.

[0008] In order to achieve the purpose of the present invention, the following technical solutions are adopted:

[0009] A motor end cover casting molding device, comprising: a conveying frame; a mounting frame arranged at the conveying frame; a sand mixing mechanism for mixing molding sand; a pre-treatment mechanism for pre-treating the molding sand;

[0010] The sand mixing mechanism includes: a sand mixing box fixedly mounted on the mounting frame; a circular tube rotatably mounted in the sand mixing box; a first spiral blade fixedly sleeved on the circular tube; a rotating rod rotatably mounted on the circular tube; a scraper fixedly mounted on the rotating rod; a stirring plate fixedly mounted on the scraper; and a driving assembly for driving the first spiral blade and the scraper to rotate.

[0011] Furthermore, the driving assembly includes: a connecting bevel gear fixedly mounted on the circular tube; a driven bevel gear fixedly mounted on the rotating rod; a driving bevel gear meshingly connected to the connecting bevel gear and the driven bevel gear; and a power source for driving the driving bevel gear to rotate.

[0012] Furthermore, the sand mixing mechanism further comprises: a feed pipe plugged and installed on the sand mixing box; and a second spiral blade rotatably installed in the feed pipe.

[0013] Furthermore, the pretreatment mechanism includes: a sliding opening opened on the sand mixing box; a screen frame slidably installed in the sliding opening; a screen plate fixedly installed in the screen frame; a rotating drum fixedly installed at the end of the rotating rod; a guide groove opened on the rotating drum; a sliding rod slidably installed in the guide groove; and a connecting rod fixedly installed between the sliding rod and the screen frame.

[0014] Furthermore, the guide groove is opened along the circumference of the drum, and the guide groove is a wave-shaped groove with a uniform waveform.

[0015] Furthermore, the top of the rotating drum is arranged in an arc shape.

[0016] Furthermore, the sieve plate and the bottom of the sieve frame are both arranged in an arc shape, and the arc directions of the sieve plate and the bottom of the sieve frame are opposite.

[0017] Furthermore, the pre-treatment mechanism further comprises: a material discharge component for intermittently discharge material onto the sieve plate;

[0018] The unloading assembly includes: a collecting hopper slidably installed in the sand mixing box; a linkage frame fixedly installed between the collecting hopper and the screen frame; a connecting pipe sleeved and installed on the discharge end of the collecting hopper; a unloading roller rotatably installed in the connecting pipe; a linkage gear coaxially connected to the unloading roller; a limiting opening provided on the linkage frame; a gear block fixedly installed in the limiting opening; and the linkage gear is meshed with the gear block.

[0019] Furthermore, the pre-treatment mechanism further comprises: a collection component for collecting unqualified molding sand;

[0020] The collecting assembly comprises: an installation box fixedly installed on the sand mixing box; and a collecting box slidably installed in the installation box.

[0021] Furthermore, a discharge pipe is fixedly installed at the bottom of the sand mixing box.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention provides a motor end cover casting and forming device. Through the arrangement of a sand mixing mechanism, the pre-treated molding sand and its ingredients can be stirred horizontally and vertically, thereby achieving comprehensive stirring of the molding sand and its ingredients in a sand mixing box, so that the molding sand and its ingredients in the sand mixing box are uniformly mixed as a whole, thereby improving the uniformity of the molding sand and its ingredients. After the molding sand and its ingredients are mixed, the molding sand and its ingredients can be quickly discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0025] Figure 1 This is a three-dimensional schematic diagram of a motor end cover casting device according to the present invention;

[0026] Figure 2 This is a schematic cross-sectional view of a sand mixing box of a motor end cover casting device according to the present invention;

[0027] Figure 3 This is a schematic cross-sectional view of a screen frame of a motor end cover casting device according to the present invention;

[0028] Figure 4 A motor end cover casting device of the present invention Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 A motor end cover casting device of the present invention Figure 3 Enlarged view of point B in the middle;

[0030] Figure 6 This is a schematic cross-sectional view of a rotating drum of a motor end cover casting device according to the present invention;

[0031] Figure 7 A motor end cover casting device of the present invention Figure 6 Enlarged view of point C in the middle;

[0032] In the picture:

[0033] 1. Conveying rack; 2. Mounting rack; 3. Sand mixing mechanism; 31. Sand mixing box; 32. Circular tube; 33. First spiral blade; 34. Rotating rod; 35. Scraper; 36. Driving assembly; 361. Power source; 362. Driving bevel gear; 363. Driven bevel gear; 364. Interlocking bevel gear; 37. Feed pipe; 38. Second spiral blade; 39. Stirring plate; 4. Pretreatment mechanism; 41. Screen frame; 42. Screen plate; 43. Rotating drum; 44. Interlocking rod; 45. Sliding rod; 46. Guide groove; 47. Discharging assembly; 471. Collecting hopper; 472. Interlocking rack; 473. Connecting pipe; 474. Discharging roller; 475. Interlocking gear; 476. Tooth block; 48. Collecting assembly; 481. Mounting box; 482. Collecting box; 483. Discharging opening; 5. Discharging pipe. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0035] In the description of the present invention, it should be understood that the terms "center", "transverse", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0036] like Figures 1 to 7As shown, the present invention provides a motor end cover casting molding device, comprising: a conveying frame 1; a mounting frame 2 arranged at the conveying frame 1; a sand mixing mechanism 3 for mixing molding sand; and a pre-treatment mechanism 4 for pre-treating the molding sand.

[0037] In the present invention, a plurality of mold frames are provided, and the mold frames are sequentially transported to the sand mixing mechanism 3 by the conveying rack 1, so that the mixed molding sand can be sequentially transported into the mold frames to prepare for the subsequent motor end cover casting.

[0038] The conveying frame 1 is also provided with a pouring mechanism, which can inject liquid metal into the prepared sand mold to complete the preliminary molding of the motor end cover; the pouring mechanism is an existing technology and will not be described in detail here.

[0039] In order to comprehensively optimize the bonding, permeability, surface quality, disintegration, wet performance and defect prevention ability of the molding sand and to meet the high requirements of the casting process for sand mold quality, other ingredients are added for mixing during the molding sand production process.

[0040] The sand mixing mechanism 3 includes: a sand mixing box 31 fixedly mounted on the mounting frame 2; a circular tube 32 rotatably mounted in the sand mixing box 31, a support frame fixedly mounted in the sand mixing box 31, and the circular tube 32 rotatably mounted on the support frame; a first spiral blade 33 fixedly mounted on the circular tube 32; a rotating rod 34 rotatably mounted on the circular tube 32; a scraper 35 fixedly mounted on the rotating rod 34; a stirring plate 39 fixedly mounted on the scraper 35; a driving assembly 36 for driving the first spiral blade 33 and the scraper 35 to rotate; the driving assembly 36 includes: a linked bevel gear 3 fixedly mounted on the circular tube 32 64; a driven bevel gear 363 fixedly mounted on the rotating rod 34; a driving bevel gear 362 meshingly connected to the linkage bevel gear 364 and the driven bevel gear 363; a power source 361 for driving the driving bevel gear 362 to rotate, the power source 361 being fixedly mounted on the outside of the sand mixing box 31 through a fixing seat; a feed pipe 37 plugged into and mounted on the sand mixing box 31, the feed pipe 37 being connected to a feed hopper; a second spiral blade 38 rotatably mounted in the feed pipe 37; the second spiral blade 38 is coaxially connected to the driving bevel gear 362; a discharge pipe 5 is fixedly mounted on the bottom of the sand mixing box 31.

[0041] When the molding sand is mixed, the power source 361 is started to drive the driving bevel gear 362 and the second spiral blade 38 to rotate, and the driving bevel gear 362 drives the driven bevel gear 363 and the interlocking bevel gear 364 to rotate;

[0042] The molding sand is added into the mixing box 31 through the top opening of the mixing box 31, and after being processed by the pretreatment mechanism 4, it falls into the bottom of the inner cavity of the mixing box 31. At the same time, the ingredients are added into the feed pipe 37 through the feed hopper. The ingredients can be transported into the mixing box 31 by the rotation of the second spiral blade 38. At this time, the molding sand and its ingredients are stirred and mixed by the first spiral blade 33, the scraper 35, and the stirring plate 39.

[0043] Since the molding sand and its ingredients are fed at the same time, it is beneficial to stir and mix the molding sand and its ingredients.

[0044] The rotation of the second spiral blade 38 can evenly deliver the ingredients to the sand mixing box 31, thus avoiding the problem of excessive delivery of ingredients, which causes the ingredients to accumulate on one side of the sand mixing box 31 and affects the mixing efficiency.

[0045] The linked bevel gear 364 drives the circular tube 32 to rotate, and the circular tube 32 drives the first spiral blade 33 to rotate. Through the rotation of the first spiral blade 33, the molding sand and its ingredients can be turned over from bottom to top, thereby turning the molding sand and its ingredients at the bottom of the sand mixing box 31 to the top, realizing longitudinal stirring of the molding sand and its ingredients, and improving the uniformity of mixing of the molding sand and its ingredients.

[0046] The driven bevel gear 363 drives the rotating rod 34, and the rotating rod 34 drives the scraper 35 to rotate. Through the rotation of the scraper 35, the molding sand and its ingredients attached to the inner wall of the sand mixing box 31 can be scraped off, so that the scraped molding sand and its ingredients are mixed with the molding sand and its ingredients located in the sand mixing box 31, thereby realizing horizontal stirring of the molding sand and its ingredients, and further improving the uniformity of the mixing of the molding sand and its ingredients.

[0047] When the scraper 35 rotates, it can drive the stirring plate 39 to rotate, and can stir the molding sand and its ingredients that are turned upward from the bottom, thereby expanding the horizontal stirring range of the molding sand and its ingredients and further improving the uniformity of the mixing of the molding sand and its ingredients.

[0048] When the molding sand and its ingredients are mixed, the power source 361 is started to rotate in the opposite direction. At this time, the first spiral blade 33 can drive the molding sand and its ingredients to move from top to bottom, so that the molding sand and its ingredients actively move toward the discharge pipe 5, achieving the purpose of rapid discharge and avoiding blockage of the discharge pipe 5.

[0049] Since the first spiral blade 33 is located above the discharge pipe 5, it is convenient to flip the molding sand and its ingredients in the discharge pipe 5 from bottom to top when the first spiral blade 33 rotates forward; when the first spiral blade 33 rotates reversely, it drives the molding sand and its ingredients to move from top to bottom for rapid discharge to avoid blockage.

[0050] In the present invention, through the setting of the sand mixing mechanism 3, the pre-treated molding sand and its ingredients can be stirred horizontally and vertically, so that the molding sand and its ingredients in the sand mixing box 31 are fully stirred, so that the molding sand and its ingredients in the sand mixing box 31 are mixed evenly as a whole, thereby improving the uniformity of the molding sand and its ingredients. After the molding sand and its ingredients are mixed, the molding sand and its ingredients can be quickly discharged.

[0051] It should be added here that the power source 361 is preferably a motor.

[0052] As a further extension of the present invention, since the molding sand contains larger particles, the particle size in the molding sand is uneven, which can easily lead to casting defects due to uneven particle size. In addition, the molding sand with larger particles is not compact enough, which can easily cause the sand mold to collapse or the casting surface to be rough. Therefore, it is necessary to screen the larger particles in the molding sand to ensure the quality of the casting.

[0053] The pretreatment mechanism 4 includes: a sliding opening opened on the sand mixing box 31; a screen frame 41 slidably installed in the sliding opening, and a circular opening is opened near the center of the bottom of the screen frame 41; a sieve plate 42 fixedly installed in the screen frame 41, and the sieve plate 42 and the bottom of the screen frame 41 are both arc-shaped, and the arc direction of the sieve plate 42 is opposite to that of the bottom of the screen frame 41; a rotating drum 43 fixedly installed at the end of the rotating rod 34, and the top of the rotating drum 43 is arc-shaped; a guide groove 46 opened on the rotating drum 43, the guide groove 46 is opened along the circumference of the rotating drum 43, and the guide groove 46 is a uniformly corrugated groove; a sliding rod 45 slidably installed in the guide groove 46; and a connecting rod 44 fixedly installed between the sliding rod 45 and the screen frame 41.

[0054] When the molding sand is screened, the power source 361 is started, thereby driving the rotating rod 34 to rotate, and the rotating rod 34 drives the rotating drum 43 to rotate, so that the sliding rod 45 slides along the path of the guide groove 46, so that the sliding rod 45 drives the connecting rod 44 to move up and down, and then drives the screen plate 42 to move up and down.

[0055] The molding sand can be screened by the up and down reciprocating movement of the sieve plate 42. Qualified molding sand falls into the bottom of the inner cavity of the sieve frame 41 through the sieve holes of the sieve plate 42, and falls into the top of the rotating drum 43 through the circular opening. Since the top of the rotating drum 43 is arranged in an arc shape, when the molding sand falls to the top of the rotating drum 43, it is affected by the centrifugal force generated by the rotation of the rotating drum 43, causing the molding sand to be dispersed toward the circumference of the rotating drum 43, thereby facilitating the mixing of the molding sand and the ingredients.

[0056] Since the screen plate 42 is arc-shaped, the molding sand falling on the top of the screen plate 42 slides from the middle to both sides, thereby preventing the molding sand from piling up on the top of the screen plate 42 and improving the screening effect.

[0057] Furthermore, the screen plate 42 moves up and down reciprocatingly, thereby accelerating the sliding of the molding sand on the top of the screen plate 42, thereby further improving the screening effect.

[0058] Since the bottom of the screen frame 41 is arranged in an arc shape, the qualified molding sand can slide quickly toward the circular opening, making it easier for the molding sand to be discharged from the circular opening.

[0059] In addition, the screen frame 41 moves up and down reciprocatingly, thereby accelerating the sliding of qualified molding sand toward the circular opening, thereby improving the discharge efficiency of the molding sand from the circular opening.

[0060] The pretreatment mechanism 4 also includes: a feeding assembly 47 for intermittently feeding materials onto the screen plate 42; the feeding assembly 47 includes: a collecting hopper 471 slidably installed in the sand mixing box 31; a linkage frame 472 fixedly installed between the collecting hopper 471 and the screen frame 41; a connecting pipe 473 sleeved and installed on the discharge end of the collecting hopper 471, a fixed plate fixedly installed in the sand mixing box 31, and the connecting pipe 473 is plugged and installed on the fixed plate; a feeding roller 474 rotatably installed in the connecting pipe 473; a linkage gear 475 coaxially connected to the feeding roller 474; a limiting opening opened on the linkage frame 472; a gear block 476 fixedly installed in the limiting opening; the linkage gear 475 is meshed and connected with the gear block 476.

[0061] When the molding sand is put into the collecting hopper 471 through the top opening of the sand mixing box 31, at the same time, the power source 361 is started, thereby driving the screen frame 41 to move up and down reciprocatingly, and the screen frame 41 drives the linkage frame 472 to move up and down reciprocatingly, thereby driving the collecting hopper 471 to vibrate, accelerating the sliding of the molding sand in the collecting hopper 471 to the discharge end, and improving the unloading efficiency.

[0062] Since the connecting gear 475 is meshed with the tooth block 476, when the connecting frame 472 moves up and down, it can drive the connecting gear 475 to rotate back and forth, thereby driving the discharge roller 474 to rotate back and forth. Since a storage trough is provided on the discharge roller 474, the molding sand enters the storage trough through the discharge end of the collecting hopper 471. The reciprocating rotation of the discharge roller 474 can drive the molding sand in the storage trough to be discharged intermittently, thereby avoiding the problem of excessive discharge volume causing insufficient screening of the screen plate 42.

[0063] The pretreatment mechanism 4 also includes: a collection assembly 48 for collecting unqualified molding sand; the collection assembly 48 includes: a mounting box 481 fixedly mounted on the sand mixing box 31; a collection box 482 slidably mounted in the mounting box 481; and a discharge opening 483 opened on the screen frame 41.

[0064] Through the screening of the sieve plate 42, the molding sand that meets the requirements falls down through the sieve holes of the sieve plate 42 to the bottom of the inner cavity of the sieve frame 41, and the unqualified molding sand slides through the top of the sieve plate 42 to the collection box 482 for collection. When the molding sand in the collection box 482 is collected to a certain amount, the collection box 482 can be taken out from the installation box 481, so as to facilitate the processing of the unqualified molding sand in the collection box 482.

[0065] In the present invention, the pretreatment mechanism 4 is provided to intermittently discharge the molding sand, thereby avoiding the problem of insufficient screening by the screen plate 42 due to excessive discharge amount, and the molding sand is fully screened, while unqualified molding sand can be collected.

[0066] In addition, in the present invention, by starting the power source 361, the collecting hopper 471, the screen frame 41, and the screen plate 42 can be driven to vibrate, and the discharge roller 474 can be driven to rotate, while the rotating drum 43, the first spiral blade 33, the scraper 35, and the stirring plate 39 can be driven to rotate, thereby realizing the same power source 361, playing multiple purposes, and improving the functionality of the equipment.

[0067] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0068] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A motor end cover casting device, characterized in that: include: A conveying frame (1); a mounting frame (2) arranged at the conveying frame (1); a sand mixing mechanism (3) for mixing molding sand; a pre-treatment mechanism (4) for pre-treating the molding sand; The sand mixing mechanism (3) comprises: a sand mixing box (31) fixedly mounted on the mounting frame (2); a circular tube (32) rotatably mounted in the sand mixing box (31); a first spiral blade (33) fixedly sleeved on the circular tube (32); a rotating rod (34) rotatably mounted on the circular tube (32); a scraper (35) fixedly mounted on the rotating rod (34); a stirring plate (39) fixedly mounted on the scraper (35); and a driving assembly (36) for driving the first spiral blade (33) and the scraper (35) to rotate. The pretreatment mechanism (4) includes: a sliding opening provided on the sand mixing box (31); a screen frame (41) slidably mounted in the sliding opening; a screen plate (42) fixedly mounted in the screen frame (41); a rotating drum (43) fixedly mounted on the end of the rotating rod (34); a guide groove (46) provided on the rotating drum (43); a sliding rod (45) slidably mounted in the guide groove (46); and a connecting rod (44) fixedly mounted between the sliding rod (45) and the screen frame (41). The guide groove (46) is opened along the circumference of the rotating drum (43), and the guide groove (46) is a wave-shaped groove with a uniform waveform; The top of the rotating drum (43) is arranged in an arc shape; The bottoms of the sieve plate (42) and the sieve frame (41) are both arranged in an arc shape, and the arc directions of the bottoms of the sieve plate (42) and the sieve frame (41) are opposite; The pre-treatment mechanism (4) further comprises: a material discharge component (47) for intermittently discharge material onto the sieve plate (42); The unloading assembly (47) includes: a collecting hopper (471) slidably mounted in the sand mixing box (31); a linkage frame (472) fixedly mounted between the collecting hopper (471) and the screen frame (41); a connecting pipe (473) sleeved and mounted on the discharge end of the collecting hopper (471); a unloading roller (474) rotatably mounted in the connecting pipe (473); a linkage gear (475) coaxially connected to the unloading roller (474); a limiting opening provided on the linkage frame (472); a gear block (476) fixedly mounted in the limiting opening; the linkage gear (475) is meshedly connected to the gear block (476); The driving assembly (36) comprises: a linked bevel gear (364) fixedly sleeved on the circular tube (32); a driven bevel gear (363) fixedly sleeved on the rotating rod (34); a driving bevel gear (362) meshedly connected to the linked bevel gear (364) and the driven bevel gear (363); and a power source (361) for driving the driving bevel gear (362) to rotate.

2. A motor end cover casting device as claimed in claim 1, characterized in that: The sand mixing mechanism (3) further comprises: a feed pipe (37) plugged and installed on the sand mixing box (31); and a second spiral blade (38) rotatably installed in the feed pipe (37).

3. A motor end cover casting device as claimed in claim 1, characterized in that: The pre-treatment mechanism (4) further comprises: a collection component (48) for collecting unqualified molding sand; The collecting assembly (48) comprises: a mounting box (481) fixedly mounted on the sand mixing box (31); and a collecting box (482) slidably mounted in the mounting box (481).

4. A motor end cover casting device as claimed in claim 1, characterized in that: A discharge pipe (5) is fixedly mounted on the bottom of the sand mixing box (31).

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