Molding device for 3D printing casting sand mold
By introducing cleaning and recycling structures into the 3D printing casting sand mold forming device, the problem of residues from the glue spraying machine and sand spreading machine is solved, improving sand mold quality and production efficiency, and reducing equipment maintenance costs.
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
In existing 3D printing casting sand mold forming equipment, the glue sprayer and sand spreading machine are prone to leaving sand and binder residues during operation, which affects the uniformity of glue spraying and sand spreading, leading to a decrease in sand mold quality and potentially causing nozzle clogging, increasing equipment maintenance costs and downtime.
A 3D printing casting sand mold forming device was designed, which uses a robotic arm to install a glue spraying machine and a sand spreading machine, and is equipped with a cleaning structure, including scrapers and brushes, for cleaning the residue at the bottom of the glue spraying machine and the sand spreading machine. At the same time, a recycling structure is set up to collect and reuse sand, thereby improving the sand spreading and glue spraying effect.
By effectively cleaning the structure, residues are removed, improving the effect of adhesive spraying and sand laying, ensuring the quality of the sand mold, reducing equipment maintenance needs, and lowering downtime and production costs.
Smart Images
Figure CN224087905U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a molding device, specifically a molding device for 3D printing casting sand molds, belonging to the field of 3D printing casting sand mold technology. Background Technology
[0002] In modern manufacturing, casting is one of the important methods for producing various mechanical parts. The quality of casting sand molds directly affects the precision, surface quality, and production efficiency of castings. With the rise of 3D printing technology, it has shown unique advantages in the field of casting sand mold manufacturing. 3D printing can quickly and accurately transform digital models into solid sand molds.
[0003] In existing 3D printing casting sand mold forming equipment, the glue spraying machine and sand spreading machine can leave sand and binder residues on the nozzle and bottom of the equipment during operation. These residues not only affect the uniformity of glue spraying and sand spreading, leading to a decrease in the quality of sand mold forming, such as inconsistent local strength and uneven surface of the sand mold, but may also cause nozzle blockage, interrupt the printing process, and increase equipment maintenance costs and downtime. Utility Model Content
[0004] The purpose of this invention is to provide a 3D printing casting sand mold forming device to solve the above problems. It can clean the sand and adhesive residue at the bottom of the glue spraying machine and sand spreading machine by cleaning the structure, thereby improving the sand spreading effect and glue spraying effect.
[0005] This utility model achieves the above-mentioned objective through the following technical solution: a molding device for 3D printing casting sand molds, including a robotic arm, a molding structure on the robotic arm, the molding structure including a mounting frame, the mounting frame mounted on the robotic arm, a glue sprayer and a sand spreading machine at the bottom end of the mounting frame, a sand spreading platform on the open ground on one side of the robotic arm, a cleaning structure on the mounting frame, the cleaning structure including a fixing plate, a fixing plate fixedly connected to each end of the mounting frame, a first hydraulic rod fixedly connected to the bottom end of the fixing plate, a fixing frame fixedly connected to the telescopic end of the first hydraulic rod, a slide fixedly connected to each side of the two fixing frames, the two slides respectively sleeved on the outside of the glue sprayer and the sand spreading machine, a screw rotatably connected to the fixing frame, a connecting frame threadedly connected to the screw, the connecting frame slidingly connected to the slides, a scraper for cleaning the bottom surface of the glue sprayer fixedly connected to one end of the connecting frame, and a brush for cleaning the bottom surface of the sand spreading machine fixedly connected to the other end of the connecting frame.
[0006] Preferably, a motor is fixedly connected to the fixing frame, and the output end of the motor is fixedly connected to the screw.
[0007] Preferably, a guide column is fixedly connected to the fixed frame, the guide column is slidably connected to the fixed plate, a guide rod is fixedly connected inside the slide, and the connecting frame is slidably connected to the guide rod.
[0008] Preferably, a top plate is slidably connected to the sand-laying platform, and a hydraulic cylinder is fixedly connected inside the sand-laying platform, with the telescopic end of the hydraulic cylinder fixedly connected to the top plate.
[0009] Preferably, the sand-laying platform is provided with multiple buffer sleeves inside, and multiple buffer columns are fixedly connected to the bottom end of the top plate. The buffer columns are slidably connected to the buffer sleeves, and a spring is fixedly connected between the buffer columns and the buffer sleeves.
[0010] Preferably, the sand-laying platform is provided with a protective structure, the protective structure including a fixing block, a fixing block is fixedly connected to each side of the sand-laying platform, a second hydraulic rod is fixedly connected to the fixing block, a protective frame is slidably connected to the outside of the sand-laying platform, an mounting block is fixedly connected to each side of the protective frame, and the telescopic end of the second hydraulic rod is fixedly connected to the mounting block.
[0011] Preferably, a guide plate is fixedly connected to each side of the protective frame, and the guide plate is inclined.
[0012] Preferably, a recycling structure is provided underground around the sand-laying platform. The recycling structure includes a first recycling pool. Two first recycling pools and two second recycling pools are pre-buried underground around the sand-laying platform. The first recycling pools and the second recycling pools are connected. Both the first recycling pools and the second recycling pools are covered with grating plates.
[0013] Preferably, the bottom of the first recycling pool has an inverted V-shaped cross-section, the bottom of the second recycling pool has a V-shaped cross-section, and a discharge pipe is fixedly connected to the bottom of the second recycling pool.
[0014] The beneficial effects of this utility model are as follows: A mounting frame is installed on the robotic arm, and a glue sprayer and a sand spreading machine are installed at the bottom of the mounting frame. A sand spreading platform is installed on the open ground on one side of the robotic arm. A fixed plate is fixedly connected to each end of the mounting frame. A first hydraulic rod is fixedly connected to the bottom of the fixed plate. A fixed frame is fixedly connected to the telescopic end of the first hydraulic rod. A slide is fixedly connected to each side of the two fixed frames. The two slides are respectively fitted onto the outside of the glue sprayer and the sand spreading machine. A screw is rotatably connected to the fixed frame. A connecting frame is threaded onto the screw. A scraper is fixedly connected to one end of the connecting frame, and a brush is fixedly connected to the other end of the connecting frame. By cleaning the residual sand and adhesive at the bottom of the glue sprayer and the sand spreading machine through the cleaning structure, the sand spreading effect and the glue spraying effect are improved. Attached Figure Description
[0015] Figure 1This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 for Figure 1 The diagram shown is an enlarged view of the structure of part A.
[0017] Figure 3 for Figure 1 The diagram shown is an enlarged view of the structure of section B.
[0018] Figure 4 This is a schematic diagram of the connection structure between the buffer sleeve and the buffer post of this utility model;
[0019] Figure 5 This is a schematic diagram of the connection structure between the second recycling tank and the discharge pipe of this utility model;
[0020] Figure 6 This is a schematic diagram of the connection structure between the first recycling tank and the grating plate of this utility model.
[0021] In the diagram: 1. Robotic arm; 2. Forming structure; 201. Mounting frame; 202. Glue sprayer; 203. Sand spreading machine; 204. Sand spreading platform; 205. Ejector plate; 206. Hydraulic cylinder; 207. Buffer sleeve; 208. Buffer column; 209. Spring; 3. Cleaning structure; 301. Fixing plate; 302. First hydraulic rod; 303. Fixing frame; 304. Slide; 305. Guide column; 306. Screw; 307. Connecting frame; 308. Motor; 309. Scraper; 310. Brush; 311. Guide rod; 4. Protective structure; 401. Fixing block; 402. Protective frame; 403. Second hydraulic rod; 404. Mounting block; 405. Guide plate; 5. Recycling structure; 501. First recycling pool; 502. Second recycling pool; 503. Grating plate; 504. Discharge pipe. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-6As shown, a molding device for 3D printing casting sand molds includes a robotic arm 1, on which a molding structure 2 is provided. The molding structure 2 includes a mounting frame 201, on which the robotic arm 1 is mounted. A glue sprayer 202 and a sand spreading machine 203 are provided at the bottom of the mounting frame 201. A sand spreading platform 204 is provided on an open area to one side of the robotic arm 1. A cleaning structure 3 is provided on the mounting frame 201, which includes a fixing plate 301. A fixing plate 301 is fixedly connected to each end of the mounting frame 201. A first hydraulic rod 302 is fixedly connected to the bottom end of the fixing plate 301. A fixing frame 303 is fixedly connected to the telescopic end of the first hydraulic rod 302. Each of the two fixed frames 303 has a slide 304 fixedly connected to both sides. The two slides 304 are respectively fitted onto the outside of the glue spraying machine 202 and the sand spreading machine 203. A screw 306 is rotatably connected to the fixed frame 303. A connecting frame 307 is threaded onto the screw 306. The connecting frame 307 is slidably connected to the slides 304. A scraper 309 for cleaning the bottom surface of the glue spraying machine 202 is fixedly connected to one end of the connecting frame 307. A brush 310 for cleaning the bottom surface of the sand spreading machine 203 is fixedly connected to the other end of the connecting frame 307. The cleaning structure 3 cleans the sand and adhesive residue at the bottom of the glue spraying machine 202 and the sand spreading machine 203, improving the sand spreading and glue spraying effects.
[0024] As a technical optimization of this utility model, a motor 308 is fixedly connected to the fixing frame 303, and the output end of the motor 308 is fixedly connected to the screw 206; the screw 206 is driven to rotate by the motor 308.
[0025] As a technical optimization of this utility model, a guide post 305 is fixedly connected to the fixing frame 303, and the guide post 305 is slidably connected to the fixing plate 301. The setting of the guide post 305 improves the stability of the fixing frame 303 sliding up and down. A guide rod 311 is fixedly connected inside the slide 304, and the connecting frame 307 is slidably connected to the guide rod 311. The setting of the guide rod 311 improves the stability of the connecting frame 307 sliding.
[0026] As a technical optimization of this utility model, a top plate 205 is slidably connected to the sand spreading platform 204, and a hydraulic cylinder 206 is fixedly connected inside the sand spreading platform 204. The telescopic end of the hydraulic cylinder 206 is fixedly connected to the top plate 205. Multiple buffer sleeves 207 are provided inside the sand spreading platform 204, and multiple buffer columns 208 are fixedly connected to the bottom end of the top plate 205. The buffer columns 208 are slidably connected to the buffer sleeves 207, and a spring 209 is fixedly connected between the buffer columns 208 and the buffer sleeves 207. The formed sand mold is ejected by the top plate 205, which facilitates the discharge of loose sand.
[0027] As a technical optimization of this utility model, the sand-laying platform 204 is provided with a protective structure 4. The protective structure 4 includes a fixing block 401. A fixing block 401 is fixedly connected to each side of the sand-laying platform 204. A second hydraulic rod 403 is fixedly connected to the fixing block 401. A protective frame 402 is slidably connected to the outside of the sand-laying platform 204. An installation block 404 is fixedly connected to each side of the protective frame 402. The telescopic end of the second hydraulic rod 403 is fixedly connected to the installation block 404. The protective structure 4 protects the sand material in the early stage of molding, preventing the sand material at the bottom from crossing the platform.
[0028] As a technical optimization of this utility model, a guide plate 405 is fixedly connected to each side of the protective frame 402. The guide plate 405 is inclined and the arrangement of the guide plate 405 facilitates the quick sliding of sand into the recycling structure 5 when removing sand particles from the sand mold.
[0029] As a technical optimization of this utility model, a recycling structure 5 is provided underground around the sand-laying platform 204. The recycling structure 5 includes a first recycling pool 501. Two first recycling pools 501 and two second recycling pools 502 are pre-buried underground around the sand-laying platform 204. The first recycling pools 501 and the second recycling pools 502 are connected. A grating plate 503 is laid on both the first recycling pools 501 and the second recycling pools 502. The bottom cross-section of the first recycling pool 501 is an inverted V-shape, and the bottom cross-section of the second recycling pool 502 is a V-shape. A discharge pipe 504 is fixedly connected to the bottom of the second recycling pool 502. By recycling and reusing the sand through the recycling structure 5, the energy utilization rate is improved and the production cost is reduced.
[0030] In use, the equipment is first started, and the robotic arm 1 is operated through the control system to move the mounting frame 201 to a suitable starting position. At this time, the glue sprayer 202 and the sand spreading machine 203 are located at an appropriate height above the sand spreading platform 204. If there is residual sand and adhesive from the previous use at the bottom of the glue sprayer 202 and the sand spreading machine 203, the cleaning structure 3 is activated, the first hydraulic rod 302 extends, driving the fixed frame 303 to descend, causing the slide 304 to slide down along the outer wall of the glue sprayer 202 and the sand spreading machine 203. The motor 308 is then started, and the motor 308 drives the screw 306 to rotate. Driven by the screw 306, the connecting frame 307 slides along the guide rod 311. The scraper 309 at one end of the connecting frame 307 cleans the bottom surface of the glue spraying machine 202, while the brush 310 at the other end cleans the bottom surface of the sand spreading machine 203. After cleaning, the first hydraulic rod 302 retracts, causing the fixed frame 303 to rise and reset. The robotic arm 1 is operated to control the sand spreading machine 203 to evenly spread a layer of sand on the sand spreading platform 204. Subsequently, the robotic arm 1 moves the glue spraying machine 202 above the area where the sand has been spread. The glue spraying machine 202 sprays adhesive, which combines with the sand, and the printing of the casting sand mold layer by layer begins. During the printing process, according to the design requirements of the sand mold, the robotic arm 1 precisely controls the movement trajectory and working parameters of the glue sprayer 202 and the sand spreading machine 203. In the initial stage of sand mold printing, the protective structure 4 is activated, the second hydraulic rod 403 extends, and pushes the protective frame 402 upwards along the outer wall of the sand spreading platform 204 to protect the sand material being formed and prevent the bottom sand material from collapsing. After the sand mold printing is completed, the hydraulic cylinder 206 is activated. The telescopic end of the hydraulic cylinder 206 pushes the ejector plate 205 upwards, ejecting the formed sand mold from the sand spreading platform 204. During the ejection process, the bottom of the ejector plate 205... The buffer column 208 at the end slides within the buffer sleeve 207. The spring 209 between the buffer column 208 and the buffer sleeve 207 provides a buffering effect, preventing damage to the sand mold due to excessive ejection speed. During sand mold cleaning and handling, scattered sand falls through the grating plate 503 around the sand spreading platform 204 into the first recycling pool 501 and the second recycling pool 502. The inverted V-shaped structure at the bottom of the first recycling pool 501 and the V-shaped structure at the bottom of the second recycling pool 502 cause the sand to gather at the bottom. The recycled sand can be collected through the discharge pipe 504 for subsequent processing and reuse.
[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A molding device for 3D printing casting sand molds, comprising a robotic arm (1), characterized in that: The robotic arm (1) is provided with a forming structure (2), which includes a mounting frame (201). The robotic arm (1) is equipped with a mounting frame (201). The bottom end of the mounting frame (201) is provided with a glue sprayer (202) and a sand spreading machine (203). A sand spreading platform (204) is provided on the open ground on one side of the robotic arm (1). The mounting frame (201) is provided with a cleaning structure (3), which includes a fixing plate (301). Both ends of the mounting frame (201) are fixedly connected to a fixing plate (301). The bottom end of the fixing plate (301) is fixedly connected to a first hydraulic rod (302). The telescopic end of the first hydraulic rod (302) is fixedly connected to a... A fixed frame (303) is provided. Each side of the two fixed frames (303) is fixedly connected to a slide (304). The two slides (304) are respectively fitted onto the outside of the glue spraying machine (202) and the sand spreading machine (203). A screw (306) is rotatably connected to the fixed frame (303). A connecting frame (307) is threaded onto the screw (306). The connecting frame (307) is slidably connected to the slide (304). A scraper (309) for cleaning the bottom surface of the glue spraying machine (202) is fixedly connected to one end of the connecting frame (307). A brush (310) for cleaning the bottom surface of the sand spreading machine (203) is fixedly connected to the other end of the connecting frame (307).
2. The forming device for 3D printing casting sand molds according to claim 1, characterized in that: A motor (308) is fixedly connected to the fixed frame (303), and the output end of the motor (308) is fixedly connected to the screw (306).
3. The forming device for 3D printing casting sand molds according to claim 1, characterized in that: A guide post (305) is fixedly connected to the fixed frame (303), the guide post (305) is slidably connected to the fixed plate (301), a guide rod (311) is fixedly connected inside the slide (304), and the connecting frame (307) is slidably connected to the guide rod (311).
4. The forming device for 3D printing casting sand molds according to claim 1, characterized in that: A top plate (205) is slidably connected to the sand-laying platform (204), and a hydraulic cylinder (206) is fixedly connected inside the sand-laying platform (204). The telescopic end of the hydraulic cylinder (206) is fixedly connected to the top plate (205).
5. The forming device for 3D printing casting sand mold according to claim 4, characterized in that: The sand-laying platform (204) is provided with multiple buffer sleeves (207) inside. Multiple buffer columns (208) are fixedly connected to the bottom end of the top plate (205). The buffer columns (208) are slidably connected to the buffer sleeves (207). A spring (209) is fixedly connected between the buffer columns (208) and the buffer sleeves (207).
6. The forming device for 3D printing casting sand molds according to claim 1, characterized in that: The sand-laying platform (204) is provided with a protective structure (4), the protective structure (4) includes a fixing block (401), a fixing block (401) is fixedly connected to each side of the sand-laying platform (204), a second hydraulic rod (403) is fixedly connected to the fixing block (401), a protective frame (402) is slidably connected to the outside of the sand-laying platform (204), an installation block (404) is fixedly connected to each side of the protective frame (402), and the telescopic end of the second hydraulic rod (403) is fixedly connected to the installation block (404).
7. The forming device for 3D printing casting sand molds according to claim 6, characterized in that: A guide plate (405) is fixedly connected to each side of the protective frame (402), and the guide plate (405) is inclined.
8. The forming device for 3D printing casting sand molds according to claim 1, characterized in that: The underground surrounding the sand-laying platform (204) is provided with a recycling structure (5), which includes a first recycling pool (501). Two first recycling pools (501) and two second recycling pools (502) are pre-buried underground around the sand-laying platform (204). The first recycling pool (501) and the second recycling pool (502) are connected. Both the first recycling pool (501) and the second recycling pool (502) are covered with grating plates (503).
9. The forming device for 3D printing casting sand mold according to claim 8, characterized in that: The bottom section of the first recycling pool (501) is an inverted V-shaped structure, and the bottom section of the second recycling pool (502) is a V-shaped structure. The bottom of the second recycling pool (502) is fixedly connected to a discharge pipe (504).