Detachable Extruder with Dual Function Nut for 3D Ceramic Printers
Patent Information
- Application Number
- TR202613298U
- Authority / Receiving Office
- TR · TR
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2026-08-06
- Publication Date
- 2026-09-21
- Estimated Expiration
- 2036-08-06
Smart Images
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Abstract
Description
1 TARIFF Detachable Extruder with Dual Function Nut for 3D Ceramic Printers Technical Area The invention relates to an extruder conveying mechanism used in three-dimensional ceramic printers. The mechanism is used to transport ceramics. three-dimensional objects are formed by layering materials that do not require heating, such as clay. It is designed for delta-type three-dimensional ceramic printers used in the production of ceramics, and the extruder unit is designed for the printer. It allows for quick and easy disassembly and reassembly of the body by hand, without the need for tools. State of the Art Three-dimensional printers that print on plastic-based materials (PLA, ABS, etc.) use a heated extruder ('hot end'), For printing materials such as ceramic clay, which do not require heating but exhibit different viscosity properties: 10 Different extruder solutions are being developed. In a known extruder design featured on an open-source online design sharing platform, a short-bodied A short auger structure has been used. In this design, a stepper motor placed on the effector uses a short auger. The auger rotates, and clay from an external reservoir feeds the print head through a hose. This In the current design, the stepper motor (Nema 17 type) is connected to the effector via a geared / screw carrier part. It appears that it is fixed in place, allowing the motor to be quickly detached by rotating it along with its carrier. However, the same In the design, the extruder body itself, which houses the auger and nozzle, is still directly attached to the printer body with three Allen bolts. It is secured with screws; one of these screws is located below the sludge feed port, preventing clogging. In these situations, removing the extruder body becomes difficult. In other words, although quick removal of the motor is possible, No such convenience is provided for the extruder body, which houses the auger and nozzle. 20 In one known commercial product, clay is pushed through a pressurized chamber made of nylon or stainless steel. The extruder is discharged through a modified extruder tip and, thanks to high-pressure seals, the extruder is suitable for daily use. A system that does not require cleaning is known. This design features removable and replaceable plastic nozzles. plastic nozzles have been used; however, plastic nozzles have lower printing accuracy and are more resistant to wear compared to metal nozzles. It offers a short service life. 25 Another known commercial product features both a pressurized chamber and a steel screw controlled by a machine. precisely controlled material flow, with retraction capability, easily disassembled and reassembled. An extruder is known to be designed so that its parts can be cleaned. In this design, the metal nozzle... It has been used. The extruder has a sealing mechanism that prevents mud from escaping; however, the seal... The abrasive clay causes wear and tear with prolonged use and requires periodic replacement. 30 2 Another known commercial product is a standard extruder consisting of a ram (piston) extruder and a separate print head. a modularly assembled system from parts, designed with ease of maintenance and servicing in mind It is located. Purpose of the Invention In the applicant's previously developed first extruder design, the backflow of the slurry during printing was 5 A thin and long-bodied structure was used to prevent this; however, this structure oscillates during printing. (vibration / shaking) has been identified as the cause. This is due to the short-bodied / short auger described in the known state of the art. The designs have resolved this oscillation problem, but in these designs, the extruder unit is attached to the printer body. Since it is secured with numerous screws, maintenance is not easily facilitated. The present invention has been developed based on known experience and the technical state. Accordingly, the aim is to create an extruder 10 The unit is attached to the printer body via a carrier bracket pre-mounted with three fixing screws. The purpose is to secure it in place. Furthermore, once the extruder is placed inside this bracket, it can be operated manually without the need for tools. It features a mechanism that allows for quick attachment and detachment using a nut that can be tightened or loosened. This Thanks to the fact that the nut also serves the function of securing the nozzle attached to the extruder body, a separate No nozzle fixing element is required. 15 Brief Explanation of the Figures Figure 1: General view of the extruder conveyor assembly in its assembled (connected) state. Figure 2: Extruder conveyor assembly in its disassembled (separated) state. Figure 3: General view of the extruder body (1), including the “U” shaped observation windows (10) on it. (Scale 1:1) 20 Figure 4: Section of the nozzle fixing thread (AA) and pneumatic fitting housing thread (B-) on the extruder body (1). Section B) Detail view. (Scale 2:1) Figure 5: General view of the carrier bracket (5). (Scale 1:1) Figure 6: General view and cross-section of the compression nut (6). (Scale 2:1) Figure 7: General view and cross-section of the motor carrier (4). (Scale 2:1) 25 Explanation of References in Figures 1: Extruder body 2: Auger 3: Stepper motor 4: Motor carrier 30 3 5: Support bracket 6: Clamping nut 7: Metal Nozzle 8: Pneumatic fitting 9: Pass-through slot 5 10: Observation window 11: Pneumatic fitting socket Description of the Invention The invention consists of an extruder body (1), an auger (2) located inside this body, auger a rotating stepper motor (3), a motor carrier (4) that fixes the stepper motor to the extruder body (1), extruder 10 a carrier bracket (5) that secures the body (1) to the delta body of the printer and the extruder body (1) to the carrier bracket (5) a nut (6) that fastens, can be tightened and loosened by hand without the use of tools thanks to its externally serrated surface. It consists of. The extruder body (1) is approximately 110 mm long and Ø35 mm in diameter, and the motor carrier (4) is located on top of it. There is a threaded section with dimensions M36x4 for screwing. The motor carrier (4) has 15 mounted on it. The stepper motor (3) is screwed into this gear section; when the motor needs to be removed, the motor carrier (4) By rotating them together, they can be separated from the extruder body (1). At the bottom of the extruder body (1) there is a threaded M18x2.5 size for fixing a metal nozzle (7). There is a section. After the nozzle (7) is placed in this section, the nut (6) with the inner surface threaded with the same dimensions is attached. This is screwed into the threaded section. The nut (6) is placed in the slot inside the carrier bracket (5) of the extruder body 20 (1) When screwed onto it, it both secures the nozzle (7) by clamping it to the extruder body (1) and the extruder It attaches its body (1) to the carrier bracket (5). In this way, by tightening and loosening a single nut (6) by hand, both Nozzle is fixed / removed and extruder body (1) from carrier bracket (5) without the use of tools It can be removed. On the side of the extruder body (1), there is a threaded pneumatic fitting housing (11) with dimensions of 1 / 2 inch NPT. 25 This slot (11) can be connected to a hose that feeds the clay from the main chamber to the extruder. The pneumatic fitting (8) is screwed in. The pneumatic fitting housing (11) protrudes sideways from the extruder body (1). It is positioned in such a way as to do so. At the top of the extruder body (1), just below the gear section to which the motor carrier (4) is attached, the body There are four U-shaped observation windows (10) distributed at equal intervals around it. Stepper motor (3) 30 The coupling connecting the augeri (2) to each other can be seen through these windows (10); in this way, any disassembly 4 Before any operation is performed, it is possible to directly visually check whether the auger (2) is turning or not, and whether the engine is running or not. It is clear that it is not working. Due to the pneumatic fitting housing (11) protruding sideways from the body, the extruder body (1) and the carrier The bracket (5) has a matching U-shaped transition slot (9); this slot is for the pneumatic fitting It ensures that the protruding part where the housing (11) is located sits perfectly and correctly on the carrier bracket (5). 5 The carrier bracket (5) is attached to the printer with three fixing screws positioned 120° apart. It is pre-assembled on the body. In case of maintenance, cleaning or unclogging, only the nut (6) It is sufficient to loosen it by hand, and the extruder body (1) can be removed from the carrier bracket (5) without using any hand tools; The carrier bracket (5) remains fixed on the printer body. In one preferred application, there is limited play between the extruder body (1) and the carrier bracket (5). While some variations exist, they are kept at a level that will not negatively affect the print quality and sensitivity. How the invention can be applied to industry. The device described in the invention creates a three-dimensional structure by depositing ceramic clay or similar viscous materials layer by layer. In the production of delta-type 3D printers that produce objects and in the maintenance / service processes of these printers for the industry. It is applicable. 15
Claims
REQUESTS 1. The invention is an extruder conveying mechanism for a three-dimensional printer that prints ceramic materials; its feature is that the printer an extruder body (1) containing a carrier bracket (5) fixed to its body, auger (2) and stepper motor (3) and The tool has an externally serrated surface that attaches the extruder body (1) to the carrier bracket (5). It contains a nut (6) that can be tightened and loosened by hand without being used. 5 2. The device is in accordance with claim 1 and its feature is that the inner surface of the nut (6) is threaded with dimensions of M18x2.5, extruder screwing into the matching threaded section at the bottom of the body (1) and thus extruder a nozzle (7) It is to fix the body (1) to the extruder body (1) and to attach the carrier bracket (5).
3. The device is in accordance with claim 1 and its feature is that it has a port on the side of the extruder body (1) for clay feeding. 1 / 2 inch NPT threaded, 10 into which a pneumatic fitting (8) enabling hose connection can be screwed. It has a pneumatic fitting housing (11) that protrudes from the side of the body.
4. The device is in accordance with Claim 1 and its feature is that the carrier bracket (5) is attached to the printer body with three fixing screws, They are mounted positioned 120° apart from each other.
5. The device is in accordance with claim 3 and its feature is that the extruder body (1) and the carrier bracket (5) are matched with each other. It has a U-shaped transition slot (9) and this slot is located in the pneumatic fitting slot (11) 15 The goal is to ensure that the protruding part sits correctly on the carrier bracket (5).
6. The device is in accordance with claim 1 and its feature is that the stepper motor (3) and the auger (2) are located on the upper part of the extruder body (1). evenly spaced around the body, allowing the coupling connecting the two parts to be seen from the outside. It has four U-shaped observation windows (10) through which one can see whether the auger (2) is rotating or not. It can be visually inspected without disassembly. 20