Motor end cover casting forming device

Abstract

The invention relates to the technical field of casting forming devices, in particular to a motor end cover casting forming device which comprises a conveying frame. The mounting frame is arranged at the conveying frame; the sand mixing mechanism is used for mixing molding sand; the pretreatment mechanism is used for pretreating molding sand; the sand mixing mechanism comprises a sand mixing box fixedly mounted on the mounting frame; the round pipe is rotationally mounted in the sand mixing box; and the first spiral blade is fixedly arranged on the circular pipe in a sleeving manner. According to the molding sand mixing device, through the arrangement of the sand mixing mechanism, pretreated molding sand and ingredients thereof can be transversely stirred and longitudinally stirred, and the molding sand and the ingredients thereof in the sand mixing box are comprehensively stirred, so that the molding sand and the ingredients thereof in the sand mixing box are integrally and uniformly mixed, and the uniformity of the molding sand and the ingredients thereof is improved; and after the molding sand and the ingredients thereof are mixed, the molding sand and the ingredients thereof can be quickly discharged.

Description

Technical Field

[0001] The present invention relates to the technical field of casting devices, and specifically relates to a casting device for motor end covers. Background Art

[0002] A motor is an electromagnetic device that realizes the conversion or transmission of electrical energy based on the law of electromagnetic induction, or converts electrical energy in one form into electrical energy in another form. A motor is composed of a housing, a stator, a rotor, etc. It uses the different magnetic fields generated after the stator and rotor are energized to rotate. Generally, end covers are installed at both ends of the motor housing. The function of the end cover is to fix and support the rotating shaft in the rotor. Most motor end covers are made of metal materials and usually adopt the casting process during production.

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

[0004] Chinese Patent with application number CN202410267061.8 discloses a sand mixing device for casting processing, including a base. On the upper right side of the base, there is a feeding component for feeding the raw materials required for sand mixing. On the upper part of the base, there is a pre-mixing component for initially mixing the sand mixing raw materials. On the front side of the base, there is a screw conveyor for sand mixing. The present invention uses the cooperation of a baffle plate and a plug plate to be able to feed the same amount of raw materials into the internal part of the moving bin, thereby ensuring that the amount of raw materials in each moving bin is the same, and further making the discharge of the screw conveyor more uniform. The invention uses the driving of the active rotating frame to drive the moving bin to move along the straight section of the track plate at the same speed as the conveying speed of the screw conveyor, so that the moving bin can discharge the pre-mixed raw materials into the internal part of the screw conveyor when moving, thereby avoiding the separation of the raw materials by the spiral plate separation of the screw conveyor, and further avoiding the different raw material ratios between different positions inside the screw conveyor, ensuring the quality of sand mixing.

[0005] However, when the existing equipment performs sand mixing treatment, multiple raw materials are usually loaded into the equipment and the raw materials are sand mixed by stirring. However, during the sand mixing process, some raw materials will deposit at the bottom of the equipment, resulting in ineffective mixing of the raw materials, thus affecting the mixing of molding sand.

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

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

[0008] To achieve the object of the present invention, the following technical solutions are adopted: A motor end cover casting and forming device includes: a conveying frame; a mounting frame provided at the conveying frame; a sand mixing mechanism for mixing molding sand; a pretreatment mechanism for preprocessing the molding sand; The sand mixing mechanism includes: a sand mixing box fixedly installed on the mounting frame; a circular tube rotatably installed in the sand mixing box; a first spiral blade fixedly sleeved on the circular tube; a rotating rod rotatably installed on the circular tube; a scraping plate fixedly installed on the rotating rod; a stirring plate fixedly installed on the scraping plate; a driving component for driving the first spiral blade and the scraping plate to rotate.

[0009] Further, the driving component includes: a linkage bevel gear fixedly sleeved on the circular tube; a driven bevel gear fixedly sleeved on the rotating rod; a driving bevel gear meshed with both the linkage bevel gear and the driven bevel gear; a power source for driving the driving bevel gear to rotate.

[0010] Further, the sand mixing mechanism further includes: a feed pipe inserted and installed on the sand mixing box; a second spiral blade rotatably installed in the feed pipe.

[0011] Further, the pretreatment mechanism includes: a sliding opening opened on the sand mixing box; a sieve frame slidably installed in the sliding opening; a sieve plate fixedly installed in the sieve frame; a rotating cylinder fixedly installed at the end of the rotating rod; a guiding groove opened on the rotating cylinder; a sliding rod slidably installed in the guiding groove; a linkage rod fixedly installed between the sliding rod and the sieve frame.

[0012] Further, the guiding groove is opened along the circumferential direction of the rotating cylinder, and the guiding groove is a waveform groove with uniform waveform.

[0013] Further, the top of the rotating cylinder is arranged in an arc shape.

[0014] Further, both the sieve plate and the bottom of the sieve frame are arranged in an arc shape, and the arc directions of the sieve plate and the bottom of the sieve frame are opposite.

[0015] Further, the pretreatment mechanism further includes: a feeding component for intermittently feeding materials onto the sieve plate; The blanking assembly includes: an aggregate hopper slidably installed in the sand mixing box; a linkage frame fixedly installed between the aggregate hopper and the sieve frame; a connecting pipe sleeved on the discharge end of the aggregate hopper; a blanking roller rotatably installed in the connecting pipe; a linkage gear coaxially connected to the blanking roller; a limiting opening formed in the linkage frame; a tooth block fixedly installed in the limiting opening; and the linkage gear is meshed with the tooth block.

[0016] Furthermore, the pretreatment mechanism further includes: a collection assembly for collecting unqualified molding sand. The collection assembly includes: an installation box fixedly installed on the sand mixing box; and a collection box slidably installed in the installation box.

[0017] Furthermore, a discharge pipe is fixedly installed at the bottom of the sand mixing box.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The motor end cover casting and forming device of the present invention, through the setting of the sand mixing mechanism, can perform horizontal stirring and vertical stirring on the pretreated molding sand and its ingredients, realizing a comprehensive stirring of the molding sand and its ingredients in the sand mixing box, making the molding sand and its ingredients in the sand mixing box evenly mixed as a whole, thereby improving the uniformity of the molding sand and its ingredients. When the molding sand and its ingredients are mixed, rapid discharging of the molding sand and its ingredients can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0020] Figure 1 It is a three-dimensional schematic diagram of a motor end cover casting and forming device of the present invention; Figure 2 It is a sectional view of the sand mixing box of a motor end cover casting and forming device of the present invention; Figure 3 It is a sectional view of the sieve frame of a motor end cover casting and forming device of the present invention; Figure 4 It is a Figure 3 magnified view at position A of a motor end cover casting and forming device of the present invention; Figure 5 It is a Figure 3 magnified view at position B of a motor end cover casting and forming device of the present invention; Figure 6 It is a sectional view of the rotating cylinder of a motor end cover casting and forming device of the present invention; Figure 7 It is a Figure 6Enlarged view at position C in the figure In the figure: 1. Conveyor frame; 2. Mounting frame; 3. Sand mixing mechanism; 31. Sand mixing box; 32. Round pipe; 33. First spiral blade; 34. Rotating rod; 35. Scraper; 36. Driving assembly; 361. Power source; 362. Driving bevel gear; 363. Driven bevel gear; 364. Connecting bevel gear; 37. Feed pipe; 38. Second spiral blade; 39. Stirring plate; 4. Pretreatment mechanism; 41. Sieve frame; 42. Sieve plate; 43. Rotary drum; 44. Linking rod; 45. Slide bar; 46. Guide groove; 47. Feeding assembly; 471. Aggregate hopper; 472. Linking frame; 473. Connecting pipe; 474. Feeding roller; 475. Linking gear; 476. Tooth block; 48. Collection assembly; 481. Installation box; 482. Collection box; 483. Discharge opening; 5. Discharge pipe Detailed implementation mode

[0021] In order to make the objectives, 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 part of the embodiments of the present invention, rather than all the embodiments

[0022] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "transverse", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the 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 thus should not be construed as limiting the protection scope of the present invention. When a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration

[0023] As Figures 1 to 7 shown, a motor end cover casting and forming device of the present invention includes: a conveyor frame 1; a mounting frame 2 disposed at the conveyor frame 1; a sand mixing mechanism 3 for mixing molding sand; and a pretreatment mechanism 4 for pretreating molding sand

[0024] In the present invention, a plurality of mold frames are provided, and the mold frames are sequentially conveyed to the sand mixing mechanism 3 through the conveying rack 1, so that the mixed molding sand can be sequentially conveyed into the mold frames, preparing for the subsequent casting of the motor end cover.

[0025] A pouring mechanism is also provided on the conveying rack 1, which can inject liquid metal into the prepared sand mold to complete the preliminary forming of the motor end cover; the pouring mechanism is a prior art and will not be elaborated here.

[0026] In order to comprehensively optimize the bonding property, air permeability, surface quality, collapsibility, wet state performance and defect prevention ability of the molding sand to meet the high requirements of the casting process for the quality of the sand mold, other ingredients are added and mixed during the production process of the molding sand.

[0027] The sand mixing mechanism 3 includes: a sand mixing box 31 fixedly installed on the mounting frame 2; a circular tube 32 rotatably installed in the sand mixing box 31, and a support frame is fixedly installed in the sand mixing box 31, and the circular tube 32 is rotatably installed on the support frame; a first spiral blade 33 fixedly sleeved on the circular tube 32; a rotating rod 34 rotatably installed on the circular tube 32; a scraper 35 fixedly installed on the rotating rod 34; a stirring plate 39 fixedly installed on the scraper 35; a driving component 36 for driving the first spiral blade 33 and the scraper 35 to rotate; the driving component 36 includes: a connecting 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 meshed and connected with both the connecting bevel gear 364 and the driven bevel gear 363; a power source 361 for driving the driving bevel gear 362 to rotate, and the power source 361 is fixedly installed outside the sand mixing box 31 through a fixing seat; a feed pipe 37 inserted and installed on the sand mixing box 31, and a feed hopper is communicated with the feed pipe 37; a second spiral blade 38 rotatably installed in the feed pipe 37; the second spiral blade 38 is coaxially connected with the driving bevel gear 362; a discharge pipe 5 is fixedly installed at the bottom of the sand mixing box 31.

[0028] When mixing the molding sand, start the power source 361 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 connecting bevel gear 364 to rotate; The molding sand is added into the sand mixing box 31 through the top opening of the sand mixing box 31, and after being processed by the pretreatment mechanism 4, it falls to the bottom of the inner cavity of the sand mixing box 31. At the same time, the ingredients are added into the feed pipe 37 through the feed hopper, and through the rotation of the second spiral blade 38, the ingredients can be conveyed into the sand mixing box 31. 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.

[0029] Since the molding sand and its ingredients are fed simultaneously, it is beneficial to the stirring and mixing of the molding sand and its ingredients.

[0030] By rotating the second spiral blade 38, the batching can be evenly conveyed into the sand mixing box 31, avoiding the problem that the excessive conveying volume of the batching causes the batching to accumulate on one side of the sand mixing box 31 and affects the mixing efficiency.

[0031] The interlocking bevel gear 364 drives the round pipe 32 to rotate, and the round pipe 32 drives the first spiral blade 33 to rotate. By rotating the first spiral blade 33, the molding sand and its batching can be turned over from bottom to top, thus realizing turning the molding sand and its batching at the bottom of the sand mixing box 31 to the top, achieving the longitudinal stirring of the molding sand and its batching, and improving the uniformity of the mixing of the molding sand and its batching.

[0032] The driven bevel gear 363 drives the rotating rod 34, and the rotating rod 34 drives the scraper 35 to rotate. By rotating the scraper 35, the molding sand and its batching attached to the inner wall of the sand mixing box 31 can be scraped off, so that the scraped molding sand and its batching are mixed with the molding sand and its batching located in the sand mixing box 31, realizing the transverse stirring of the molding sand and its batching, and further improving the uniformity of the mixing of the molding sand and its batching.

[0033] When the scraper 35 rotates, it can drive the stirring plate 39 to rotate, and can disperse the molding sand and its batching turned over from bottom to top, expanding the transverse stirring range of the molding sand and its batching, and further improving the uniformity of the mixing of the molding sand and its batching.

[0034] When the mixing of the molding sand and its batching is completed, start the power source 361 to rotate in the reverse direction. At this time, the first spiral blade 33 can drive the molding sand and its batching to move from top to bottom, so that the molding sand and its batching actively move towards the discharge pipe 5, achieving the purpose of rapid discharging, and can also avoid the blockage of the discharge pipe 5.

[0035] Since the first spiral blade 33 is located above the discharge pipe 5, it is convenient to turn over the molding sand and its batching in the discharge pipe 5 from bottom to top when the first spiral blade 33 rotates forward; when the first spiral blade 33 rotates in reverse, it drives the molding sand and its batching to move from top to bottom for rapid discharging to avoid blockage.

[0036] In the present invention, through the setting of the sand mixing mechanism 3, the transverse stirring and longitudinal stirring of the pretreated molding sand and its batching can be carried out, realizing the comprehensive turning of the molding sand and its batching in the sand mixing box 31, making the molding sand and its batching in the sand mixing box 31 be evenly mixed as a whole, thereby improving the uniformity of the molding sand and its batching. When the mixing of the molding sand and its batching is completed, the rapid discharging of the molding sand and its batching can be realized.

[0037] It is supplemented here that the power source 361 is preferably a motor.

[0038] As a further extension of the present invention, since the molding sand contains relatively large particles, the particle size in the molding sand is uneven, which easily causes casting defects due to uneven particle diameters. Moreover, the molding sand with larger particles has insufficient compactness, which is likely to cause the collapse of the sand mold or rough casting surfaces. Therefore, it is necessary to screen the larger particles in the molding sand to ensure the quality of the castings.

[0039] The pretreatment mechanism 4 includes: a sliding opening formed in the sand mixing box 31; a sieve frame 41 slidably installed in the sliding opening, with a circular opening formed near the center of the bottom of the sieve frame 41; a sieve plate 42 fixedly installed in the sieve frame 41, both the sieve plate 42 and the bottom of the sieve frame 41 are arc-shaped, and the arc directions of the sieve plate 42 and the bottom of the sieve frame 41 are opposite; a rotating cylinder 43 fixedly installed at the end of the rotating rod 34, with the top of the rotating cylinder 43 being arc-shaped; a guiding groove 46 formed in the rotating cylinder 43, the guiding groove 46 is formed along the circumferential direction of the rotating cylinder 43, and the guiding groove 46 is a wave-shaped groove with uniform waves; a sliding rod 45 slidably installed in the guiding groove 46; a connecting rod 44 fixedly installed between the sliding rod 45 and the sieve frame 41.

[0040] When screening the molding sand, start the power source 361, which drives the rotating rod 34 to rotate. The rotating rod 34 drives the rotating cylinder 43 to rotate, causing the sliding rod 45 to slide along the path of the guiding groove 46. Thus, the sliding rod 45 drives the connecting rod 44 to make reciprocating up and down movements, and further drives the sieve plate 42 to make reciprocating up and down movements.

[0041] Through the reciprocating up and down movement of the sieve plate 42, the molding sand can be screened. The qualified molding sand falls into the inner cavity bottom of the sieve frame 41 through the sieve holes of the sieve plate 42 and then falls into the top of the rotating cylinder 43 through the circular opening. Since the top of the rotating cylinder 43 is arc-shaped, when the molding sand falls onto the top of the rotating cylinder 43, it is affected by the centrifugal force generated during the rotation of the rotating cylinder 43, causing the molding sand to disperse circumferentially along the rotating cylinder 43, thus facilitating the mixing of the molding sand and the ingredients.

[0042] Since the sieve plate 42 is arc-shaped, the molding sand falling onto the top of the sieve plate 42 slides from the middle to both sides, preventing the molding sand from accumulating on the top of the sieve plate 42, thereby improving the screening effect.

[0043] Moreover, the sieve plate 42 makes reciprocating up and down movements, which accelerates the sliding of the molding sand on the top of the sieve plate 42, further improving the screening effect.

[0044] Since the bottom of the sieve frame 41 is arc-shaped, the qualified molding sand can quickly slide towards the circular opening, facilitating the discharge of the molding sand from the circular opening.

[0045] Moreover, the sieve frame 41 makes reciprocating up and down movements, which accelerates the sliding of the qualified molding sand towards the circular opening, thereby improving the discharge efficiency of the molding sand from the circular opening.

[0046] The preprocessing mechanism 4 further includes: a blanking assembly 47 for intermittently blanking onto the sieve plate 42; the blanking 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 sieve frame 41; a connecting pipe 473 sleeved on the discharge end of the collecting hopper 471, and a fixing plate is fixedly installed in the sand mixing box 31, and the connecting pipe 473 is inserted and installed on the fixing plate; a blanking roller 474 rotatably installed in the connecting pipe 473; a linkage gear 475 coaxially connected to the blanking roller 474; a limiting opening opened on the linkage frame 472; a tooth block 476 fixedly installed in the limiting opening; the linkage gear 475 is meshed with the tooth block 476.

[0047] 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, so as to drive the sieve frame 41 to move up and down reciprocally. The sieve frame 41 drives the linkage frame 472 to move up and down reciprocally, so as to drive the collecting hopper 471 to vibrate, accelerating the sliding of the molding sand in the collecting hopper 471 towards the discharge end and improving the blanking efficiency.

[0048] Since the linkage gear 475 is meshed with the tooth block 476, when the linkage frame 472 moves up and down reciprocally, it can drive the linkage gear 475 to rotate reciprocally, so as to drive the blanking roller 474 to rotate reciprocally. Since a storage groove is opened on the blanking roller 474, the molding sand enters the storage groove through the discharge end of the collecting hopper 471. Through the reciprocal rotation of the blanking roller 474, the molding sand in the storage groove can be intermittently blanked, avoiding the problem that the blanking amount is too large, resulting in insufficient screening of the sieve plate 42.

[0049] The preprocessing mechanism 4 further includes: a collecting assembly 48 for collecting unqualified molding sand; the collecting assembly 48 includes: a mounting box 481 fixedly installed on the sand mixing box 31; a collecting box 482 slidably installed in the mounting box 481; a discharge opening 483 opened on the sieve frame 41.

[0050] Through the screening of the sieve plate 42, the qualified molding sand falls downward 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 down from the top of the sieve plate 42 into the collecting box 482 for collection. When the molding sand in the collecting box 482 is collected to a certain amount, the collecting box 482 can be taken out of the mounting box 481, so as to facilitate the treatment of the unqualified molding sand in the collecting box 482.

[0051] In the present invention, through the setting of the preprocessing mechanism 4, the molding sand can be intermittently blanked, avoiding the problem that the blanking amount is too large, resulting in insufficient screening of the sieve plate 42, and the molding sand can be fully screened, and at the same time, the unqualified molding sand can be collected.

[0052] In addition, by starting the power source 361 in the present invention, the aggregate hopper 471, the sieve frame 41, and the sieve plate 42 can be driven to vibrate, the feeding roller 474 can be driven to rotate, and at the same time, the rotary drum 43, the first spiral blade 33, the scraper 35, and the stirring plate 39 can be driven to rotate, so that the same power source 361 can be used for multiple purposes, improving the functionality of the equipment.

[0053] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0054] It should be understood that those of ordinary skill in the art can make improvements or changes according to the above description, and all such improvements and changes should fall within the protection scope of the appended claims of the present invention.

Claims

1. A motor end cover casting and forming device, characterized in that, Including: A conveying rack (1); a mounting rack (2) provided at the conveying rack (1); A sand mixing mechanism (3) for mixing molding sand; A pretreatment mechanism (4) for pretreating molding sand; The sand mixing mechanism (3) includes: a sand mixing box (31) fixedly mounted on the mounting rack (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 scraping plate (35) fixedly mounted on the rotating rod (34); a stirring plate (39) fixedly mounted on the scraping plate (35); a driving assembly (36) for driving the first spiral blade (33) and the scraping plate (35) to rotate.

2. The motor end cover casting and forming device according to claim 1, characterized in that, The driving assembly (36) includes: a linkage 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) meshed and connected with both the linkage bevel gear (364) and the driven bevel gear (363); a power source (361) for driving the driving bevel gear (362) to rotate.

3. The motor end cover casting and forming device according to claim 2, characterized in that, The sand mixing mechanism (3) further includes: a feed pipe (37) inserted and mounted on the sand mixing box (31); a second spiral blade (38) rotatably mounted in the feed pipe (37).

4. A motor end cover casting and forming device according to claim 1, characterized in that, The pretreatment mechanism (4) includes: a sliding opening opened on the sand mixing box (31); a sieve frame (41) slidably mounted in the sliding opening; a sieve plate (42) fixedly mounted in the sieve frame (41); a rotating cylinder (43) fixedly mounted at the end of the rotating rod (34); a guiding groove (46) opened on the rotating cylinder (43); a sliding rod (45) slidably mounted in the guiding groove (46); a linkage rod (44) fixedly mounted between the sliding rod (45) and the sieve frame (41).

5. The motor end cover casting and forming device according to claim 4, characterized in that The guiding groove (46) is opened along the circumferential direction of the rotating cylinder (43), and the guiding groove (46) is a waveform groove with uniform waveform.

6. The casting and forming device for the motor end cover according to claim 5, characterized in that, The top of the rotating cylinder (43) is arranged in an arc shape.

7. The motor end cover casting and forming device according to claim 6, characterized in that, Both the bottom of the sieve plate (42) and the sieve frame (41) are arranged in an arc shape, and the arc directions of the bottom of the sieve plate (42) and the sieve frame (41) are opposite.

8. The motor end cover casting and forming device according to claim 7, wherein The pretreatment mechanism (4) further includes: a feeding assembly (47) for intermittently feeding materials onto the sieve plate (42); The feeding assembly (47) includes: an aggregate hopper (471) slidably mounted in the sand mixing box (31); a linkage frame (472) fixedly mounted between the aggregate hopper (471) and the sieve frame (41); a connecting pipe (473) sleeved on the discharge end of the aggregate hopper (471); a feeding roller (474) rotatably mounted in the connecting pipe (473); a linkage gear (475) coaxially connected with the feeding roller (474); a limiting opening opened on the linkage frame (472); a tooth block (476) fixedly mounted in the limiting opening; the linkage gear (475) is meshed and connected with the tooth block (476).

9. The motor end cover casting and forming device as described in claim 8, wherein The preprocessing mechanism (4) further includes: a collection component (48) for collecting unqualified molding sand; The collection component (48) includes: a mounting box (481) fixedly installed on the sand mixing box (31); a collection box (482) slidably installed in the mounting box (481).

10. A motor end cover casting and forming device according to claim 1, characterized in that, A discharge pipe (5) is fixedly installed at the bottom of the sand mixing box (31).

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