Spraying head for casting 3D printing
By using a sealing plate and return spring structure in the 3D printed spray head, the problem of ink dropping when the spray head is not in use is solved, and the sealing effect and product aesthetics are improved.
Patent Information
- Application Number
- CN202420327617.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-21
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-02-21
AI Technical Summary
Existing 3D printed spray heads are likely to cause ink to drip or fall when not in use, affecting the aesthetics of the product.
A casting 3D printing output spray head is designed, using two sealing plates and a return spring structure to ensure that the spray head can be sealed when not in use and prevent ink from dripping.
It effectively improves the sealing effect of the spray head, prevents ink from falling off, and improves the aesthetics of the product.
Smart Images
Figure CN222470726U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of 3D printing, in particular to a spray head for casting 3D printing. Background Art
[0002] 3D printing is a type of rapid prototyping technology. It is based on (software) digital modeling and uses a variety of bondable materials such as plastics, metals, ceramics, rubber, glass, and colored sand to "print" three-dimensional physical products by adding materials layer by layer. 3D printing technology is constantly being used in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automobiles, aerospace, dental and medical industries, education, geographic information systems, civil engineering, and other fields. With the rapid development and promotion of information technology such as mobile Internet, nanotechnology, new materials, and new energy, artificial intelligence, digital manufacturing, and industrial robots have made continuous breakthroughs in 3D printing modern manufacturing technology. The enthusiasm for developing 3D printing technology and the rise of the 3D printing industry has been heating up around the world.
[0003] When performing 3D printing, a spray head is required to spray materials. However, when some existing spray heads are in use, the sprayed materials (such as ink or some sticky substances) will be sprayed out through the inside of the spray head. When printing is not in progress, the injection mechanism will stop injecting materials into the spray head, and the spray head will stop spraying materials, which will cause some materials to remain in the spray head. Under the action of gravity, the materials will drip or fall, causing the materials to drip onto the product, affecting the appearance of the product. Utility Model Content
[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a spray head for casting 3D printing, which can solve the problems of the background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a kind of spray head for casting 3D printing, comprising a spray head body, a material injection pipe connected to the inside of the spray head body is fixedly installed on the top of the spray head body, a fixed block is fixedly installed on the surface of the spray head body, a slide is provided on the surface of the fixed block, two moving rods are slidably connected inside the slide, a positioning rod is fixedly installed inside the slide, the two slides are slidably connected on the surface of the positioning rod, two return springs are movably sleeved on the surface of the positioning rod, the opposite ends of the two return springs are respectively fixedly connected to the two moving rods, and the opposite ends of the two return springs are fixedly connected to the inside of the slide, and sealing plates are fixedly installed on the two moving rods.
[0006] Preferably, the interior of the spray head body is rotatably connected with a rotating shaft, and a baffle is fixedly installed on one end of the rotating shaft located inside the spray head body.
[0007] Preferably, a circular plate is fixedly sleeved on the surface of the rotating shaft, a torsion spring is movably sleeved on the surface of the rotating shaft, and two ends of the torsion spring are respectively fixedly connected to the circular plate and the inside of the spray head body.
[0008] Preferably, an eccentric wheel is fixedly connected to one end of the rotating shaft extending to the outside of the spray head body and the fixed block.
[0009] Preferably, a limiting slide is provided on the surface of the fixed block, the limiting slide is internally slidably connected to a limiting slider, a limiting rod is fixedly installed inside the limiting slide, and the surface of the limiting rod is internally slidably connected to the limiting slider.
[0010] Preferably, a lifting rod is fixedly mounted on one end of the limiting slider, and an extrusion head is fixedly mounted on the lower end of the lifting rod.
[0011] Preferably, both of the two moving rods are rotatably connected with rotating wheels.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] (1) The casting 3D printing nozzle is convenient for sealing the bottom of the nozzle body by setting two sealing plates, thereby preventing the nozzle body from being sealed when the nozzle body is not spraying ink, preventing the ink inside the nozzle body from dripping, improving the sealing effect of the nozzle body, and preventing the ink from dripping, which would affect the appearance of the product.
[0014] (2) The casting 3D printing nozzle reduces the friction resistance between the moving rod and the extrusion head by setting two rotating wheels, thereby improving the smoothness of the movement of the device, preventing jamming, and ensuring the stability of the device operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0016] Figure 1 This is a schematic diagram of the structure of a spray head for casting 3D printing in the utility model;
[0017] Figure 2 For this utility model Figure 1 The enlarged schematic diagram at A in the middle;
[0018] Figure 3 This is a schematic diagram of the interior of the spray head body of the utility model;
[0019] Figure 4 It is a schematic diagram of the fixing block of the utility model.
[0020] Figure numerals: 1. spray head body; 2. eccentric wheel; 3. injection tube; 4. fixed block; 5. rotating shaft; 6. lifting rod; 7. extrusion head; 8. rotating wheel; 9. moving rod; 10. positioning rod; 11. reset spring; 12. slide; 13. baffle; 14. circular plate; 15. torsion spring; 16. sealing plate; 17. limiting slider; 18. limiting rod; 19. limiting slide. DETAILED DESCRIPTION
[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.
[0022] See also Figure 1-4 The utility model provides a technical solution: a casting 3D printing spray head, comprising a spray head body 1, a material injection pipe 3 connected to the inside of the spray head body 1 is fixedly installed on the top of the spray head body 1, a fixed block 4 is fixedly installed on the surface of the spray head body 1, a slide 12 is provided on the surface of the fixed block 4, two moving rods 9 are slidably connected inside the slide 12, a positioning rod 10 is fixedly installed inside the slide 12, the two slides 12 are slidably connected on the surface of the positioning rod 10, two return springs 11 are movably sleeved on the surface of the positioning rod 10, the opposite ends of the two return springs 11 are respectively fixedly connected to the two moving rods 9, the opposite ends of the two return springs 11 are fixedly connected to the inside of the slide 12, and the two moving rods 9 are fixedly installed with a sealing plate 16.
[0023] By setting up two sealing plates 16, it is convenient to seal the bottom of the spray head body 1, thereby preventing the discharge port of the spray head body 1 from being sealed when the spray head body 1 is not spraying ink, preventing the ink inside the spray head body 1 from dripping, improving the sealing effect of the spray head body 1, and preventing the ink from dripping, causing ink dripping and affecting the appearance of the product.
[0024] The interior of the spray head body 1 is rotatably connected with a rotating shaft 5, and a baffle 13 is fixedly installed on one end of the rotating shaft 5 located inside the spray head body 1, a circular plate 14 is fixedly sleeved on the surface of the rotating shaft 5, and a torsion spring 15 is movably sleeved on the surface of the rotating shaft 5, and both ends of the torsion spring 15 are respectively fixedly connected to the circular plate 14 and the interior of the spray head body 1, and an eccentric wheel 2 is fixedly connected to one end of the rotating shaft 5 extending to the outside of the spray head body 1 and the fixed block 4, and a limiting slide 19 is provided on the surface of the fixed block 4, and a limiting slider 17 is slidably connected to the interior of the limiting slide 19, and a limiting rod 18 is fixedly installed inside the limiting slide 19, and the surface of the limiting rod 18 is slidably connected to the interior of the limiting slider 17, a lifting rod 6 is fixedly installed on one end of the limiting slider 17, and an extrusion head 7 is fixedly installed on the lower end of the lifting rod 6, and rotating wheels 8 are rotatably connected to the two moving rods 9.
[0025] When performing injection tube 3D printing, the ink inside the printer is transported to the inside of the spray head body 1 through the injection tube 3. When the ink is being transported, it impacts the baffle 13, causing the baffle 13 to drive the rotating shaft 5 to rotate, thereby deforming the torsion spring 15, and then rotating the eccentric wheel 2. The lifting rod 6 is squeezed by the rotation of the eccentric wheel 2, so that the extrusion head 7 moves downward, and the triangle of the extrusion head 7 squeezes the two rotating wheels 8, so that the two moving rods 9 move away from each other, and then the two sealing plates 16 are separated, and the spray head body 1 is opened. When ink is not injected into the inside of the spray head body 1, the two moving rods 9 and the two sealing plates 16 are reset by the two reset springs 11 to seal the bottom of the spray head body 1.
[0026] When the lifting rod 6 moves downward, the limiting slider 17 will slide inside the limiting slide 19 and on the surface of the limiting rod 18, and then the lifting rod 6 will be restricted by the limiting rod 18, the limiting slide 19 and the limiting slider 17, so that the lifting rod 6 can only move up and down.
[0027] By setting the two rotating wheels 8, the friction resistance between the moving rod 9 and the extrusion head 7 is reduced, thereby improving the smoothness of the movement of the device, preventing the occurrence of jamming, and ensuring the stability of the operation of the device.
[0028] Working principle: The ink inside the printer is transported to the inside of the spray head body 1 through the injection tube 3. When the ink is transported, it impacts the baffle 13, causing the baffle 13 to drive the rotating shaft 5 to rotate, thereby causing the torsion spring 15 to deform, thereby causing the eccentric wheel 2 to rotate. The rotation of the eccentric wheel 2 squeezes the lifting rod 6, causing the extrusion head 7 to move downward, and then the triangle of the extrusion head 7 squeezes the two rotating wheels 8, thereby causing the two moving rods 9 to move back to each other, thereby separating the two sealing plates 16, and opening the spray head body 1. When injecting ink into the interior of the spray head body 1, the two moving rods 9 and the two sealing plates 16 are reset by the two reset springs 11 to seal the bottom of the spray head body 1. The provision of the two sealing plates 16 facilitates the sealing of the bottom of the spray head body 1, thereby preventing the discharge port of the spray head body 1 from being sealed when the spray head body 1 is not spraying ink, preventing the ink inside the spray head body 1 from dripping, improving the sealing effect of the spray head body 1, and preventing the ink from dripping, causing ink dripping and affecting the appearance of the product.
[0029] When the lifting rod 6 moves downward, the limiting slider 17 will slide inside the limiting slide 19 and on the surface of the limiting rod 18, and then the lifting rod 6 will be restricted by the limiting rod 18, the limiting slide 19 and the limiting slider 17, so that the lifting rod 6 can only move up and down.
[0030] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.
Claims
1. A spray head for casting 3D printing, comprising a spray head body (1), characterized in that: A material injection pipe (3) connected to the inside of the material injection head body (1) is fixedly installed on the top of the material injection head body (1); a fixed block (4) is fixedly installed on the surface of the material injection head body (1); a slideway (12) is provided on the surface of the fixed block (4); two moving rods (9) are slidably connected inside the slideway (12); a positioning rod (10) is fixedly installed inside the slideway (12); the two slideways (12) are slidably connected on the surface of the positioning rod (10); two return springs (11) are movably sleeved on the surface of the positioning rod (10); the opposite ends of the two return springs (11) are respectively fixedly connected to the two moving rods (9); the opposite ends of the two return springs (11) are fixedly connected to the inside of the slideway (12); and sealing plates (16) are fixedly installed on the two moving rods (9).
2. The spray head for casting 3D printing according to claim 1, characterized in that: The interior of the spray head body (1) is rotatably connected to a rotating shaft (5), and a baffle (13) is fixedly mounted on one end of the rotating shaft (5) located inside the spray head body (1).
3. The spray head for casting 3D printing according to claim 2, characterized in that: A circular plate (14) is fixedly sleeved on the surface of the rotating shaft (5), a torsion spring (15) is movably sleeved on the surface of the rotating shaft (5), and two ends of the torsion spring (15) are respectively fixedly connected to the circular plate (14) and the inside of the spray head body (1).
4. The spray head for casting 3D printing according to claim 3, characterized in that: An eccentric wheel (2) is fixedly connected to one end of the rotating shaft (5) extending to the outside of the spray head body (1) and the fixed block (4).
5. The spray head for casting 3D printing according to claim 4, characterized in that: A limiting slideway (19) is provided on the surface of the fixed block (4); the limiting slideway (19) is internally slidably connected to a limiting slider (17); a limiting rod (18) is fixedly installed inside the limiting slideway (19); and the surface of the limiting rod (18) is internally slidably connected to the limiting slider (17).
6. The ejector head for casting 3D printing according to claim 5, characterized in that: A lifting rod (6) is fixedly mounted on one end of the limiting sliding block (17), and an extrusion head (7) is fixedly mounted on the lower end of the lifting rod (6).
7. The ejector head for casting 3D printing according to claim 6, characterized in that: The two moving rods (9) are both rotatably connected with rotating wheels (8).