Sand mold 3D printer
By setting up a collection groove and baffle on the sand box to prevent the splashing sand, and using the insert rod and the fixed rod structure to facilitate the removal of the collection frame, the problem of scraping sand from the scraper is solved, and the automatic collection and convenient recycling of sand is achieved.
Patent Information
- Application Number
- CN202422271233.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-14
AI Technical Summary
During the sand laying process, the scraper scrapes sand and easily falls into the printer, resulting in difficulty in cleaning.
Two first collection grooves and a second collection groove are arranged on the sand box, and the baffle prevents splashing sand from entering the collection groove, and forms a T-grip structure through the insertion rod and the fixing rod to facilitate the removal and recycling of the collection frame.
Automatic collection and convenient recycling of scraped sand is realized, preventing sand from splashing and improving cleaning efficiency.
Smart Images
Figure CN223235004U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of printers, in particular to a sand mold 3D printer. Background Art
[0002] Sand mold 3D printing uses droplet injection technology. It prints by first laying sand and then selectively spraying a viscous fluid onto the sand surface. This allows the casting sand to bond to each other to form the cross-section of the part. The process of laying sand and spraying the binder is then continuously repeated. Finally, the area sprayed with the fluid dries and bonds to form a three-dimensional sand mold, realizing rapid additive manufacturing of casting sand molds.
[0003] When laying sand, you need to use a scraper to scrape the sand on the sand box flat. When the scraper is scraping the sand, part of the sand will be scraped out of the sand box and fall into the printer, which is very troublesome to clean and collect later. Utility Model Content
[0004] The present application provides a sand mold 3D printer that can collect scraped sand and prevent the sand from falling out of the sand box.
[0005] The sand mold 3D printer provided in this application adopts the following technical solution:
[0006] A sand mold 3D printer comprises a body, a Y-axis transmission platform and an XY-axis transmission platform installed in the body, and a sand box, wherein a sand laying head is installed on the Y-axis transmission platform, a scraper is provided at the bottom of the sand laying head, a print head is installed on the XY-axis transmission platform, a printing area is provided on the sand box, a lifting platform is slidably connected in the printing area, and a driving part for driving the lifting platform to rise and fall is also provided in the printing area, two first collecting troughs and a second collecting trough are provided on the sand box, the two first collecting troughs are respectively located on both sides of the movement path of the sand laying head, the second collection trough is located on the movement path of the sand laying head, the two first collecting troughs are both connected to the second collection trough, and the two first collecting troughs are both provided with a baffle on the side away from the printing area, and the tops of the two baffles are higher than the printing area.
[0007] By adopting the above technical solution, when the sand laying head lays sand, the sand scraped out of the printing area by the scraper will fall into the two first collection troughs and the second collection trough, thereby completing the collection of the sand, and the two baffles can block the sand splashed out of the printing platform when the scraper scrapes the sand, so that the splashed sand falls into the two first collection troughs and the second collection trough.
[0008] Preferably, the depth of the second collecting groove is greater than the depth of the two first collecting grooves, and the depth of the two first collecting grooves gradually decreases from one end close to the second collecting groove to one end far away from the second collecting groove.
[0009] By adopting the above technical solution, the sand that falls into the two first collecting troughs will automatically roll into the first collecting trough, making it convenient for the unified recovery and cleaning of the sand in the later stage.
[0010] Preferably, a connecting groove connected to the second collecting groove is opened on one side of the sand box, and a collecting frame is inserted into the connecting groove. One end of the collecting frame extends into the second collecting groove and conflicts with the side wall of the second collecting groove away from the connection.
[0011] By adopting the above technical solution, the sand that falls into the first collection tank will fall into the collection frame. After the printing of the later product is completed, the collection frame will be pulled out of the connecting tank, and then the sand in the collection frame will be poured into the material library to easily complete the sand recovery work.
[0012] Preferably, a socket is provided on the bottom wall of the communicating groove, and a plug rod is slidably connected along the Z-axis direction on the side of the collecting frame away from the second collecting groove, and the plug rod is plugged into and matched with the socket.
[0013] By adopting the above technical solution, when the collection frame is inserted into the collection trough, the insertion rod is inserted into the insertion hole, thereby preventing the collection frame from being displaced, so that the sand entering the second collection trough can accurately fall into the collection frame.
[0014] Preferably, a fixing rod is provided on a surface of the collecting frame away from the second collecting groove, a matching groove is provided on the inserting rod, and one end portion of the fixing rod is slidably connected in the matching groove along the Z-axis direction.
[0015] By adopting the above technical solution, after the product printing is completed, the insertion rod inserted in the socket is pulled out, so that the insertion rod and the fixed rod form a T-shaped handle structure. At this time, the staff can easily hold the T-shaped handle structure and easily pull the collection frame out of the connecting groove.
[0016] Preferably, the liquid ejection port of the print head is located on the bottom surface of the print head, and the bottom of the print head is slidably connected to a sealing plate. The print head is also provided with a control unit for controlling the sliding of the sealing plate. The sealing plate is located below the liquid ejection port and blocks the liquid ejection port.
[0017] By adopting the above technical solution, the control unit controls the sliding of the sealing plate, thereby changing the area of the sealing plate blocking the liquid injection port, so that the print head can be used for more adhesives with different fluidity, and there is no need to frequently replace different print heads due to different fluidity of adhesives.
[0018] Preferably, the control unit is two electric cylinders, which are respectively arranged at two ends of the print head, and the output shafts of the two electric cylinders are respectively connected to the sealing plates.
[0019] By adopting the above technical solution, the position of the sealing plate can be changed when the output shafts of the two electric cylinders are extended or retracted, thereby changing the area of the liquid spraying port blocked by the sealing plate.
[0020] Preferably, a corrugated hose is sleeved on the output shafts of the two electric cylinders, one end of the corrugated hose is connected to the electric cylinder, and the other end of the corrugated hose is connected to the sealing plate.
[0021] By adopting the above technical solution, sand is prevented from entering the connection between the electric cylinder and its output shaft.
[0022] The technical effects of this utility model are mainly reflected in the following aspects:
[0023] 1. The utility model can collect the scraped sand and prevent the sand from falling out of the sand box;
[0024] 2. The three sealing plates of the utility model can block the sand that splashes out of the printing platform when the scraper is scraping, so that the splashed sand falls into the collection box;
[0025] 3. The utility model forms a T-shaped handle structure through the insertion rod and the fixed rod, which makes it convenient for the staff to pull out the collection frame from the connecting groove. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a structural diagram of a sand mold 3D printer.
[0027] Figure 2 yes Figure 1 Schematic diagram of the partial structure of the 3D printer.
[0028] Figure 3 It is a structural diagram of the sanding head and scraper.
[0029] Figure 4 It is a schematic diagram of the structure of the bottom part of the print head.
[0030] Figure 5 yes Figure 4 Cross-sectional view of the print head along line AA.
[0031] Figure 6 Schematic diagram of the structure of the sand box.
[0032] Figure 7 yes Figure 6 Cross-sectional view of the medium sand box along line BB.
[0033] Figure 8 yes Figure 6 Cross-sectional view of the flask along line CC.
[0034] Figure 9 yes Figure 8 A partial enlarged view of point D in the middle.
[0035] Figure numerals: 1. Machine body; 11. Y-axis transmission platform; 12. XY-axis transmission platform; 13. Sanding head; 14. Scraper; 2. Sand box; 21. Printing area; 22. Lifting platform; 23. Driving unit; 24. First collecting tank; 25. Second collecting tank; 26. Baffle; 27. Connecting tank; 28. Socket; 3. Collection frame; 4. Insert rod; 41. Matching slot; 5. Fixing rod; 6. Print head; 61. Liquid nozzle; 7. Sealing plate; 8. Control unit; 81. Electric cylinder; 9. Corrugated hose. DETAILED DESCRIPTION
[0036] The following is a further detailed description of the present application in conjunction with the accompanying drawings to make the technical solution of the present application easier to understand and grasp.
[0037] Reference Figure 1 and Figure 2 The present embodiment of a sand mold 3D printer includes a body 1 having an opening on one side. A conveyor belt is installed within the body 1, with one end of the conveyor belt extending through the opening and out of the body 1. A conveyor belt is mounted on the body 1, and a flask 2 is placed on the conveyor belt. A rolling shutter door is also installed within the body 1 to seal the opening. During product printing, the conveyor belt transports the flask 2 into the body 1, while the rolling shutter door closes to seal the opening. After the product is printed, the rolling shutter door opens, and the conveyor belt transports the flask 2 out of the body 1, making it easier for workers to sort the products inside the flask 2.
[0038] Reference Figure 2 and Figure 3 A Y-axis transmission platform 11 is installed on the top of the inner cavity of the machine body 1, and a sanding head 13 is installed on the Y-axis transmission platform 11. The Y-axis transmission platform 11 can realize the displacement of the sanding head 13 in the Y-axis direction, thereby realizing the sanding operation of the sanding head 13. A scraper 14 is provided at the bottom of the sanding head 13. An XY-axis transmission platform 12 is also installed on the top of the inner cavity of the machine body 1, and the XY-axis transmission platform 12 is located above the Y-axis transmission platform 11. A print head 6 is installed on the XY-axis transmission platform 12, and the XY-axis transmission platform 12 can realize the displacement of the print head 6 on the XY-axis plane, thereby realizing the printing operation of the print head 6. The Y-axis transmission platform 11 and the XY-axis transmission platform 12 are transmission mechanisms well known to those skilled in the art and will not be elaborated in detail herein.
[0039] Reference Figure 4 and Figure 5The liquid ejection port 61 of the print head 6 is located on the bottom surface of the print head 6. The bottom of the print head 6 is connected to a sealing plate 7 that slides along the X-axis direction. The sealing plate 7 is located below the liquid ejection port 61 and blocks the liquid ejection port 61. The print head 6 is also provided with a control unit 8 for controlling the sliding of the sealing plate 7. The control unit 8 is composed of two electric cylinders 81, which are respectively mounted at the two ends of the print head 6. The output shafts of the two electric cylinders 81 are respectively connected to the sealing plate 7. A corrugated hose 9 is sleeved on the output shafts of the two electric cylinders 81. One end of the corrugated hose 9 is connected to the electric cylinder 81, and the other end of the corrugated hose 9 is connected to the sealing plate 7.
[0040] Reference Figure 1 and Figure 2 Different adhesives have different fluidity properties. Therefore, when a different adhesive is needed, the traditional method is to replace the print head 6 to adjust the size of the print head's liquid discharge port 61 to meet the adhesive's flow requirements. However, the print head 6 of this embodiment adjusts the position of the sealing plate 7 by extending and retracting the output shafts of the two electric cylinders 81, thereby changing the area of the liquid discharge port 61 blocked by the sealing plate 7. This allows the print head 6 to accommodate a wider range of adhesives with different fluidity properties, eliminating the need to frequently replace the print head 6 for different adhesives, thereby improving printing production efficiency.
[0041] Reference Figure 6-Figure 8 A printing area 21 is provided on the sand box 2, and a lifting platform 22 is slidably connected to the printing area 21 along the Z axis. A driving part 23 for driving the lifting platform 22 to rise and fall is also provided in the printing area 21. The driving part 23 is an oil cylinder, and the output shaft of the oil cylinder is connected to the lifting platform 22.
[0042] Reference Figure 6-Figure 8 The sand box 2 is provided with two first collection troughs 24 and a second collection trough 25. The two first collection troughs 24 are located on either side of the movement path of the sanding head 13, and the second collection trough 25 is located in the movement path of the sanding head 13. The first collection troughs 24 are connected to the second collection trough 25. Both first collection troughs 24 are provided with baffles 26 on the side away from the printing area 21. The tops of both baffles 26 are higher than the printing area 21. The depth of the second collection trough 25 is greater than that of the two first collection troughs 24, and the depth of both first collection troughs 24 gradually decreases from the end closest to the second collection trough 25 to the end away from the second collection trough 25.
[0043] Reference Figure 6 、 Figure 8 and Figure 9 A connecting groove 27 connected to the second collecting groove 25 is opened on one side of the sand box 2, and a collecting frame 3 is inserted into the connecting groove 27. One end of the collecting frame 3 extends into the second collecting groove 25 and conflicts with the side wall of the second collecting groove 25 away from the connection.
[0044] Reference Figure 6 、 Figure 8 and Figure 9 A fixing rod 5 is fixed to the side of the collection frame 3 away from the second collection tank 25. An insertion rod 4 is also provided on the collection frame 3. The insertion rod 4 has a mating groove 41 formed therein. One end of the fixing rod 5 is slidably connected to the mating groove 41 along the Z-axis. A socket 28 is formed on the bottom wall of the connecting groove 27. The insertion rod 4 is plugged into the socket 28.
[0045] Reference Figure 6 、 Figure 8 and Figure 9 When the sand box 2 is inside the machine body 1 and the product is being printed, the insertion rod 4 is inserted into the insertion hole 28 to prevent the collection frame 3 from shifting, so that the sand entering the second collection slot 25 can fall accurately into the collection frame 3. After the product printing is completed and the sand box 2 is transported out of the machine body 1, the insertion rod 4 inserted in the insertion hole 28 is pulled out, so that the insertion rod 4 and the fixing rod 5 form a T-shaped handle structure. At this time, the staff can easily grasp the T-shaped handle structure and easily pull the collection frame 3 out of the connecting slot 27. Then, the sand in the collection frame 3 is poured into the material storage to easily complete the sand recovery work.
[0046] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.
Claims
1. A sand mold 3D printer, comprising a body (1), a Y-axis transmission platform (11) and an XY-axis transmission platform (12) installed in the body (1), and a sand box, wherein a sanding head (13) is installed on the Y-axis transmission platform (11), a scraper (14) is provided at the bottom of the sanding head (13), a print head (6) is installed on the XY-axis transmission platform (12), a printing area (21) is provided on the sand box (2), a lifting platform (22) is slidably connected in the printing area (21), and a driving unit (23) for driving the lifting platform (22) to move up and down is further provided in the printing area (21), characterized in that: The sand box (2) is provided with two first collecting grooves (24) and one second collecting groove (25). The two first collecting grooves (24) are respectively located on both sides of the movement path of the sanding head (13). The second collecting groove (25) is located on the movement path of the sanding head (13). The two first collecting grooves (24) are both connected to the second collecting groove (25). The two first collecting grooves (24) are both provided with a baffle (26) on the side away from the printing area (21). The top ends of the two baffles (26) are both higher than the printing area (21).
2. A sand mold 3D printer according to claim 1, characterized in that: The depth of the second collecting groove (25) is greater than the depth of the two first collecting grooves (24), and the depths of the two first collecting grooves (24) gradually decrease from one end close to the second collecting groove (25) to one end far from the second collecting groove (25).
3. A sand mold 3D printer according to claim 2, characterized in that: A connecting groove (27) communicating with the second collecting groove (25) is provided on one side of the sand box (2), a collecting frame (3) is inserted into the connecting groove (27), one end of the collecting frame (3) extends into the second collecting groove (25) and contacts the side wall of the second collecting groove (25) away from the connecting side.
4. A sand mold 3D printer according to claim 3, characterized in that: A socket (28) is provided on the bottom wall of the connecting groove (27); a plug rod (4) is slidably connected along the Z-axis direction on a surface of the collecting frame (3) away from the second collecting groove (25); and the plug rod (4) is plugged into and matched with the socket (28).
5. A sand mold 3D printer according to claim 4, characterized in that: A fixing rod (5) is provided on a surface of the collecting frame (3) away from the second collecting groove (25), a matching groove (41) is provided on the inserting rod (4), and one end of the fixing rod (5) is slidably connected in the matching groove (41) along the Z-axis direction.
6. A sand mold 3D printer according to claim 1, characterized in that: The liquid ejection port (61) of the print head (6) is located on the bottom surface of the print head (6); the bottom of the print head (6) is slidably connected to a sealing plate (7); the print head (6) is also provided with a control unit (8) for controlling the sliding of the sealing plate (7); the sealing plate (7) is located below the liquid ejection port (61) and blocks the liquid ejection port (61).
7. A sand mold 3D printer according to claim 6, characterized in that: The control unit (8) is composed of two electric cylinders (81), which are respectively arranged at two ends of the print head (6), and the output shafts of the two electric cylinders (81) are respectively connected to the sealing plate (7).
8. A sand mold 3D printer according to claim 7, characterized in that: The output shafts of the two electric cylinders (81) are sleeved with a corrugated hose (9), one end of the corrugated hose (9) is connected to the electric cylinder (81), and the other end of the corrugated hose (9) is connected to the sealing plate (7).