3D printing equipment for manufacturing casting sand molds on large scale
By introducing a sliding sand screening mechanism into the sand mold 3D printing equipment, the problem of uneven sand spreading caused by sand agglomeration was solved, achieving uniform distribution of sand molds and high-quality molding of castings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-07
AI Technical Summary
During sand mold 3D printing, the humidity of the storage environment affects the sand material, causing it to clump and resulting in uneven sand spreading, which affects the casting effect.
The sliding mechanism drives the sand screening basket to slide inside the cover plate, screening out large sand particles and loosening clumps of sand to ensure uniform distribution.
To prevent uneven sand spreading caused by agglomerated sand, improve the surface quality and structural strength of castings, and ensure consistent thickness of each layer.
Smart Images
Figure CN224087902U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of 3D printing equipment, specifically a kind of 3D printing equipment for mass production of foundry sand mould, belong to sand mould 3D printer technical field. BACKGROUND
[0002] Sand mould 3D printer is a kind of additive manufacturing equipment based on binder jetting technology, is specially used for quickly manufacturing sand mould (sand mould) and sand core for casting. It forms complex geometry by layering sand particles, without traditional mould, greatly shortens casting cycle.
[0003] However, in the use process of sand mould 3D printer, sand material stored in sand spreader is affected by the humidity of storage environment, and is easy to stick and clump after absorbing water. The clumped sand material can cause uneven sand spreading, inconsistent binder penetration, and uneven surface of sand mould, which is not conducive to improving the casting effect of sand mould. UTILITY MODEL CONTENT
[0004] The utility model discloses a kind of 3D printing equipment for mass production of foundry sand mould, and fixed block and sieve sand basket are slid in cover plate by driving lever, so that sieve sand basket filters sand material stored inside, and clumped sand material also can be loosened by colliding with sieve sand basket inner wall, so that sand material can be evenly dropped into sand spreader.
[0005] The utility model discloses a kind of 3D printing equipment for mass production of foundry sand mould, including sand box, the sand box is fixedly connected with surplus sand basket, the top of the sand box is equipped with sand scraping mechanism, the sand scraping mechanism is clamped and installed with cover plate, the cover plate is equipped with through slot, the through slot portion is installed with sliding mechanism, the sliding mechanism includes support and motor, the top of the cover plate is fixedly connected with support, the support is fixedly installed with motor, the output shaft of the motor is fixedly connected with carousel, the cover plate is slidably connected with sieve sand basket, the sieve sand basket is fixedly connected with fixed block, carousel, fixed block are rotatably connected with driving lever.
[0006] Preferably, the sliding mechanism further includes sliding block and ball, two groups of sliding blocks are fixedly installed on the sieve sand basket, the ball is rotatably installed in the sliding block, and the ball is rotatably connected between the cover plate.
[0007] Preferably, the sieve sand basket is located in the through slot portion, and the length of the through slot is greater than the length of the sieve sand basket.
[0008] Preferably, the sand scraping mechanism comprises a sand spreading device and a sand storage box, the top of the sand box is provided with the sand spreading device, the sand spreading device is fixedly connected with the sand storage box, the sand storage box is fixedly installed with a protective plate, the protective plate is rotatably connected with a roller, and the protective plate is fixedly connected with a scraper.
[0009] Preferably, the inner wall of the sand storage box is provided in a slope structure, and the top end of the sand storage box is clamped with a cover plate.
[0010] Preferably, the length of the cover plate is greater than the length of the sand storage box, and the sand screening basket is in communication with the inside of the sand storage box through the cover plate.
[0011] Preferably, the roller and the scraper are in the same horizontal plane, and the bottom of the scraper is provided in a slope structure.
[0012] Preferably, the rotating rod is provided in an inclination, and the rotating disc is rotatably connected with the support.
[0013] Preferably, the residual sand basket is located on the side wall of the sand box, and the inside of the residual sand basket is provided in a slope structure.
[0014] The sand material can be discharged into the sand screening basket through the feeding assembly, the control switch of the motor is turned on at this time, the output shaft of the motor can drive the rotating disc to rotate on the support installed at the top of the cover plate, the rotating rod is rotatably installed on the rotating disc, one end of the rotating rod away from the rotating disc is rotatably connected with the fixed block installed on the sand screening basket, the bottom end of the sand screening basket is limited by the cover plate, when the rotating disc rotates, the rotating rod can drive the sand screening basket to reciprocatingly slide in the through groove part provided in the cover plate, when the sand screening basket slides, the sand material stored inside can be filtered, and then the sand material with large particles can be screened out; when the agglomerated sand material collides with the inner wall of the sand screening basket, the sand material can be scattered, and then it is beneficial to prevent the agglomerated sand material from being unable to be uniformly distributed through the sand spreading device, causing local accumulation or vacancy, inconsistent printing layer thickness, and possible uneven subsequent binder penetration, finally causing rough surface, size deviation or insufficient structural strength of the casting. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a whole structure schematic view of the utility model;
[0016] Figure 2 It is a connecting structure schematic view of the sand spreading device and the sand storage box of the utility model;
[0017] Figure 3 It is a connecting structure schematic view of the protective plate and the roller of the utility model;
[0018] Figure 4 It is a connecting structure schematic view of the sand screening basket and the sliding block of the utility model;
[0019] Figure 5 It is the connection structure schematic view of the cover plate and the sand screening basket of the utility model.
[0020] In the drawing: 1, sand box; 2, residual sand basket; 3, sand scraping mechanism; 301, sand spreading device; 302, sand storage box; 303, guard plate; 304, roller; 305, scraper; 4, cover plate; 5, sliding mechanism; 501, sand screening basket; 502, sliding block; 503, rotating rod; 504, rotating disc; 505, support; 506, motor; 507, fixed block; 508, ball; 6, through slot. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0022] Please refer to Figures 1-5 As shown in the drawing, a kind of 3D printing equipment for mass production of foundry sand mold, including sand box 1, residual sand basket 2 is fixedly connected on the sand box 1, the top of the sand box 1 is equipped with sand scraping mechanism 3, the sand scraping mechanism 3 is clamped and installed with cover plate 4, the cover plate 4 is equipped with through slot 6, sliding mechanism 5 is installed in the through slot 6 part, the sliding mechanism 5 includes support 505 and motor 506, the top of the cover plate 4 is fixedly connected with support 505, motor 506 is fixedly installed on the support 505, the output shaft of the motor 506 is fixedly connected with rotating disc 504, the cover plate 4 is slidably connected with sand screening basket 501, the sand screening basket 501 is fixedly connected with fixed block 507, rotating rod 503 is rotatably connected between rotating disc 504 and fixed block 507, the output shaft of motor 506 drives rotating disc 504 to rotate on support 505, and the bottom of sand screening basket 501 is limited by cover plate 4, when rotating disc 504 rotates, rotating rod 503 rotates with rotating disc 504, can drive sand screening basket 501 to reciprocate and slide in the through slot 6 part of cover plate 4; two groups of sliding blocks 502 are fixedly installed on the sand screening basket 501, ball 508 is rotatably installed in the sliding block 502, ball 508 is rotatably connected between the cover plate 4, when sand screening basket 501 slides along the inner wall of cover plate 4, it will drive two groups of sliding blocks 502 to displace on the top of cover plate 4, sliding block 502 moves to make ball 508 contact with cover plate 4, and then through ball 508, the contact area between sliding block 502 and cover plate 4 can be reduced, to improve the sliding effect of sand screening basket 501.
[0023] As a technical optimization scheme of the utility model, the sand scraping mechanism 3 includes a sand spreading device 301 and a sand storage box 302, the top of the sand box 1 is equipped with the sand spreading device 301, the sand spreading device 301 is fixedly connected with the sand storage box 302, the top of the sand storage box 302 is clamped with a cover plate 4, the sand screening basket 501 is communicated with the inside of the sand storage box 302 through the cover plate 4, when the sand spreading device 301 moves on the top of the sand box 1, the feeding assembly can screen the sand material through the sand screening basket 501 and discharge into the sand storage box 302 for storage, thereby facilitating subsequent uniform sand spreading; the sand storage box 302 is fixedly installed with a protective plate 303, the protective plate 303 is rotatably connected with a roller 304, the roller 304 in the protective plate 303 rolls and crushes the sand material, so that the sand layer is more compact, the porosity is reduced, and the adhesive penetration effect is improved; the protective plate 303 is fixedly connected with a scraper 305, the scraper 305 scrapes the sand material flat, and ensures the thickness consistency of each layer of sand.
[0024] As a technical optimization scheme of the utility model, the rotating rod 503 is obliquely arranged, and the rotating disc 504 is rotatably connected with the support 505; under the driving action of the motor 506, the rotating rod 503 drives the fixed block 507 to move, and then the fixed block 507 drives the sand screening basket 501 to reciprocate, so that the sand screening basket 501 can filter the sand material in the inside, and large-grained sand material can be screened out.
[0025] As a technical optimization scheme of the utility model, the excess sand basket 2 is located on the side wall of the sand box 1, and the inside of the excess sand basket 2 is obliquely arranged; when the scraper 305 moves, the excess sand material can be pushed into the excess sand basket 2, thereby preventing the excess sand material from falling to the ground, and facilitating the recycling of the excess sand.
[0026] The utility model discloses a sand laying device, which comprises a sand laying device 301, a sand box 1, a sand storage box 302, a protective plate 303 and a sand laying device 301.
[0027] It is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, so as to include all changes falling within the meaning and scope of the equivalent elements of the claims in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0028] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.
Claims
1. A 3D printing device for mass production of casting sand molds, comprising a sand box (1), characterized in that: A sand basket (2) is fixedly connected to the sand box (1). A sand scraping mechanism (3) is provided on the top of the sand box (1). A cover plate (4) is fitted on the sand scraping mechanism (3). A through groove (6) is provided in the cover plate (4). A sliding mechanism (5) is installed in the through groove (6). The sliding mechanism (5) includes a bracket (505) and a motor (506). A bracket (505) is fixedly connected to the top of the cover plate (4). A motor (506) is fixedly installed on the bracket (505). A turntable (504) is fixedly connected to the output shaft of the motor (506). A sand screening basket (501) is slidably connected in the cover plate (4). A fixing block (507) is fixedly connected to the sand screening basket (501). A rotating rod (503) is rotatably connected between the turntable (504) and the fixing block (507).
2. The 3D printing equipment for mass production of casting sand molds according to claim 1, characterized in that: The sliding mechanism (5) further includes a slider (502) and a ball bearing (508). Two sets of sliders (502) are symmetrically fixed on the sand screening basket (501). A ball bearing (508) is rotatably installed inside the slider (502). The ball bearing (508) is in rolling connection with the cover plate (4).
3. The 3D printing equipment for mass production of casting sand molds according to claim 1, characterized in that: The sand screening basket (501) is located in the through groove (6), and the length of the through groove (6) is greater than the length of the sand screening basket (501).
4. The 3D printing equipment for mass production of casting sand molds according to claim 1, characterized in that: The sand scraping mechanism (3) includes a sand spreader (301) and a sand storage box (302). The top of the sand box (1) is provided with a sand spreader (301). A sand storage box (302) is fixedly connected to the sand spreader (301). A protective plate (303) is fixedly installed on the sand storage box (302). A roller (304) is rotatably connected inside the protective plate (303). A scraper (305) is fixedly connected inside the protective plate (303).
5. The 3D printing equipment for mass production of casting sand molds according to claim 4, characterized in that: The inner wall of the sand storage box (302) is set with a sloping structure, and a cover plate (4) is fitted onto the top of the sand storage box (302).
6. The 3D printing equipment for mass production of casting sand molds according to claim 4, characterized in that: The length of the cover plate (4) is greater than the length of the sand storage box (302), and the sand screening basket (501) is connected to the interior of the sand storage box (302) through the cover plate (4).
7. A 3D printing device for mass production of casting sand molds according to claim 4, characterized in that: The roller (304) and scraper (305) are on the same horizontal plane, and the bottom of the scraper (305) is set with a sloping structure.
8. The 3D printing equipment for mass production of casting sand molds according to claim 1, characterized in that: The rotating rod (503) is inclined, and the turntable (504) is rotatably connected to the bracket (505).
9. A 3D printing device for mass production of casting sand molds according to claim 1, characterized in that: The excess sand basket (2) is located on the side wall of the sand box (1), and the interior of the excess sand basket (2) is arranged with an inclined structure.