Forming barrel locking mechanism

Abstract

The utility model discloses a forming barrel locking mechanism which comprises a printing platform, a forming barrel and a base located below the printing platform, a guide shaft is arranged between the base and the printing platform, a lifting plate is connected to the guide shaft in a sliding mode, and cantilevers which extend forwards and are used for bearing the forming barrel are arranged on the left side and the right side of the lifting plate. The cantilever can support the forming barrel and press the forming barrel towards the printing platform, a butt joint structure used for locking the forming barrel after the forming barrel ascends to the printing platform is arranged between the top of the forming barrel and the printing platform, and a driving device used for driving the lifting plate to ascend and descend is arranged between the lifting plate and the base. And a positioning structure for clamping and fixing the forming barrel is arranged on the cantilever. The device has the advantages of being more efficient and stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printer equipment technical field especially relates to a forming barrel locking mechanism. BACKGROUND

[0002] Selective Laser Sintering (SLS) technology, as an advanced additive manufacturing method, its core lies in the use of laser beam to selectively sinter powder materials, layer by layer to build complex three-dimensional models. One of the core components of SLS 3D printer is the forming barrel, which carries the powder materials needed for printing and provides support for the model building. During the printing process, the stability and accuracy of the forming barrel are crucial to the quality of the final product. However, how to effectively fix the forming barrel to ensure its stable fit and accurate positioning between the printing platform after each lift remains a key challenge for SLS 3D printing technology.

[0003] Currently, SLS 3D printers on the market generally use manual mechanical locking barrel mechanisms. This traditional locking barrel method usually relies on manual adjustment of the height of the forming barrel and relies on the handle to drive the up-and-down swing of the connecting rod to achieve locking and unlocking of the forming barrel. However, this mechanical structure has many shortcomings, limiting the printing efficiency and accuracy. First of all, due to the inevitable friction between the connecting rod and the pin shaft and the complexity of the mechanical structure itself, repeated up-and-down swing operations can easily cause wear and deformation of the connecting rod and pin shaft, thus causing jamming, reducing printing efficiency, and even affecting printing quality.

[0004] Secondly, the existing manual mechanical locking barrel mechanism is difficult to accurately control the locking force. The inherent tolerance of the mechanical structure, the size deviation of the parts, and the error of manual installation will all cause an unavoidable gap between the forming barrel and the printing platform. This gap not only can cause powder leakage, pollute the printing environment, and increase the workload of later cleaning and maintenance, but more importantly, it can affect the forming effect, reduce the printing accuracy, and even cause printing failure.

[0005] Thirdly, the existing limiting mechanism usually relies on a simple epoxy plate structure and cannot effectively limit the shaking of the forming barrel during locking. Shaking of the forming barrel in X, Y, and Z directions will affect its fitting accuracy with the printing platform, thus affecting the printing quality. Especially in a high-temperature printing environment, this shaking is more likely to be amplified, further increasing the risk of printing failure.

[0006] In addition, during the loading and unloading of the forming barrel, the gap between the connecting rods can also cause significant shaking of the barrel body. Moreover, when loading and unloading the trolley, the operator needs to adjust the position of the forming barrel in real time according to the situation to ensure matching with the limiting block on the connecting rod, increasing the complexity and time-consuming nature of the operation.

[0007] Finally, the original SLS type 3D printing using manual mechanical barrel locking mechanism is usually carried out at low temperature (about 200 degrees Celsius), which is not suitable for working at high temperature (above 300 degrees Celsius). However, the high temperature environment in the SLS 3D printing process can easily cause thermal deformation and performance degradation of conventional mechanical components, such as reduced locking force and reduced positioning accuracy, thereby affecting the printing quality and stability of the equipment.

[0008] Therefore, it is necessary to further improve and perfect the prior art to overcome these deficiencies, and the utility model is made based on this situation. Utility model content

[0009] The utility model aims at overcoming the deficiencies of the prior art, and provides a more efficient and stable forming barrel locking mechanism.

[0010] The utility model is realized through the following technical schemes:

[0011] In order to solve the above technical problems, the utility model provides a kind of forming barrel locking mechanism, including printing platform, forming barrel and the base located below printing platform, the guide shaft is equipped between the base and printing platform, the lifting plate is slidably connected on the guide shaft, the cantilever of the lifting plate left and right sides is equipped with and is used to carry the cantilever of forming barrel and is pressed to the direction of printing platform direction, the butt joint structure for locking forming barrel after forming barrel rises to printing platform is equipped between the top of forming barrel and printing platform, the driving device for driving lifting plate lifting is equipped between the lifting plate and base, the positioning structure for clamping forming barrel is equipped on the cantilever.

[0012] In order to further solve the technical problems to be solved by the utility model, in a kind of forming barrel locking mechanism provided by the utility model, the positioning structure includes the clamping block respectively equipped in the top surface of two cantilevers, two clamping blocks are opposite left and right, the left and right side surfaces of the forming barrel are equipped with wedge-shaped block, and the wedge-shaped block gradually narrows from front to back, the inner side of the clamping block is equipped with clamping groove, and the side surface of the clamping groove is wedge surface that gradually inclines inward from front to back, the wedge-shaped block can be inserted and clamped in corresponding clamping groove from front to back;The positioning structure further includes the limiting stopper equipped in the rear of the top surface of cantilever.

[0013] In order to further solve the technical problems to be solved by the utility model, in a kind of forming barrel locking mechanism provided by the utility model, the driving device includes linear driver, one end of the linear driver is hinged on the base, the other end of the linear driver is hinged on the lifting plate.

[0014] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of forming barrel locking barrel mechanism, the linear driver is electric push rod or cylinder.

[0015] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of forming barrel locking barrel mechanism, the butt joint structure includes several positioning pins arranged at the top of forming barrel and several pin holes arranged at the corresponding positions of printing platform, the positioning pin can be inserted into the corresponding pin hole from bottom to top.

[0016] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of forming barrel locking barrel mechanism, the guide shaft and lifting plate are equipped with the sliding bearing connecting both.

[0017] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of forming barrel locking barrel mechanism, the cantilever includes main plate, the side of main plate is equipped with side plate, and the side plate and main plate are equipped with several interval arranged rib plates.

[0018] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of forming barrel locking barrel mechanism, the guide shaft is equipped with two, and the left and right sides of lifting plate are slidably connected on the left and right guide shafts.

[0019] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of forming barrel locking barrel mechanism, the rear end of wedge block is equipped with first chamfer, and the front end of clamping groove is equipped with second chamfer.

[0020] Compared with prior art, the utility model has following advantages:

[0021] The automatic forming barrel locking barrel mechanism improves the efficiency, precision and stability of 3D printing process. The mechanism integrates automatic lifting control, stable support and efficient positioning function modules, realizes the automatic lifting and locking of the forming barrel. Specifically, the mechanism uses a driving device to automatically control the lifting movement of the forming barrel according to a preset program without manual intervention, thereby greatly reducing the operation time and human error. In order to ensure the stability of the forming barrel during printing, the mechanism designs a stable cantilever structure to provide reliable support for the forming barrel, effectively avoiding displacement or tilting caused by vibration or other factors during printing. In addition, the efficient positioning mechanism is one of the core advantages of the mechanism. Through the positioning pin and wedge limiting structure, the forming barrel can be accurately positioned and locked, ensuring positioning accuracy and locking reliability even in high-temperature printing environment, effectively preventing powder leakage caused by gaps, thereby ensuring printing quality and material utilization, solving the problem of failure of traditional mechanisms in high temperature. Attached Figure Description

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0023] Fig. 1 This is one of the three-dimensional structural schematic diagrams of this utility model;

[0024] Fig. 2 This is the second three-dimensional structural schematic diagram of this utility model;

[0025] Fig. 3 This is the third three-dimensional structural schematic diagram of this utility model. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Please see Figs. 1-3 This embodiment discloses a barrel locking mechanism for forming barrels, which aims to improve the efficiency and stability of 3D printers during the powder forming process. The locking mechanism mainly includes a printing platform 7, a forming barrel 1, and a base 2 located below the printing platform 7.

[0028] In this embodiment, a guide shaft 3 is provided between the base 2 and the printing platform 7 to ensure the stability and accuracy of the lifting plate 4 during the lifting process. The lifting plate 4, which is slidably connected to the guide shaft 3, has forward-extending cantilever arms 41 arranged on its left and right sides. The cantilever arms 41 not only support the forming barrel 1, but also press the forming barrel 1 towards the printing platform 7, thereby ensuring that the forming barrel 1 is firmly locked on the printing platform and preventing displacement during the printing process.

[0029] Of course, a docking structure is also provided between the top of the forming barrel 1 and the printing platform 7 for locking the forming barrel 1 after it rises to the printing platform 7. Further, the docking structure includes several positioning pins 12 located on the top of the forming barrel 1 and several pin holes 71 located at corresponding positions on the printing platform 7. The positioning pins 12 can be inserted into the corresponding pin holes 71 from bottom to top, thereby further securing the forming barrel 1. Preferably, the positioning pins 12 and pin holes 71 are made of materials with high temperature resistance and low thermal expansion coefficient, such as certain special steels, ceramics, or composite materials. These materials are not easily deformed or expanded at high temperatures, thus ensuring the dimensional stability and positioning accuracy of the mechanism.

[0030] A driving device 5 is arranged between the lifting plate 4 and the base 2, and is used to drive the lifting plate 4 to lift. The driving device 5 adopts a linear actuator 51, one end of which is hinged to the base 2, and the other end is hinged to the lifting plate 4. The linear actuator 51 can be an electric push rod or a pneumatic cylinder, which can realize stable and smooth lifting process. This design not only improves the overall efficiency of the machine, but also realizes stable and smooth lifting process, guarantees the accuracy after multiple lifting, and prolongs the service life of the equipment. It is worth mentioning that the two ends of the linear actuator 51 are hinged through the pin shaft, which effectively avoids the jamming phenomenon, and makes the power transmission more uniform.

[0031] Each cantilever 41 includes a main plate 411, a side plate 412 is arranged on the side of the main plate 411, and a plurality of rib plates 413 are arranged between the main plate 411 and the side plate 412, so as to significantly enhance the strength and stability of the structure. In this way, even in the high-load printing process, the cantilever 41 can maintain good supporting performance.

[0032] In order to ensure the accuracy and reliability of the locking process of the forming barrel 1, the cantilever 41 is provided with a positioning structure for clamping the forming barrel 1. The left and right sides of the forming barrel 1 are provided with wedge-shaped blocks 11, which gradually narrow from front to back. The positioning structure includes clamping blocks 42 arranged on the top surfaces of the two cantilevers 41, respectively, and the inner sides of the two clamping blocks 42 are provided with clamping grooves 421. The side surface of the clamping groove 421 is a wedge surface 4211 which gradually inclines inward from front to back, so that the wedge-shaped block 11 can be smoothly inserted into the corresponding clamping groove 421 and clamped tightly, thereby effectively fixing the forming barrel 1. In addition, the rear part of the top surface of the cantilever 41 is also provided with a limiting block 43, which provides further limiting support for the forming barrel 1, and ensures that it does not displace during the printing process. Such positioning structure can accurately and stably limit the forming barrel 1.

[0033] Between the guide shaft 3 and the lifting plate 4, a sliding bearing 6 connecting the two is arranged to reduce friction and improve the flexibility and stability of lifting. At the same time, the guide shaft 3 is provided with two, and the left and right sides of the lifting plate 4 are respectively connected to the two guide shafts 3 in a sliding manner. This design further enhances the stability of the mechanism and the smoothness during lifting.

[0034] In order to improve the convenience of loading and unloading the forming barrel 1, the rear end of the wedge-shaped block 11 is provided with a first chamfer 111, and the front end of the clamping groove 421 is provided with a second chamfer 4212. In this way, when the forming barrel 1 is loaded into the two cantilevers 41 from front to back, it will be more smooth, and the resistance in the operation process will be reduced.

[0035] In addition, the wedge-shaped limiting structure of the wedge-shaped block 11 has a self-locking feature. Even if the material slightly expands at high temperature, the wedge-shaped structure can maintain close contact and locking force through its own geometry, thereby preventing the forming barrel from loosening or shifting.

[0036] In summary, the barrel locking mechanism of the forming barrel of the present embodiment realizes automatic lifting and barrel locking, and has accurate positioning structure and stable lifting structure, which not only significantly improves the printing accuracy and stability, but also optimizes the operation process, reduces the need for manual intervention, and adapts to the requirements of modern 3D printing technology for high efficiency and high reliability.

Claims

1. A forming tub lock tub mechanism, characterized by: The utility model provides a 3D printer, including printing platform (7), forming bucket (1) and the base (2) below printing platform (7), be equipped with guide shaft (3) between base (2) and printing platform (7), sliding connection has lifting plate (4) on guide shaft (3), the left and right sides of lifting plate (4) are equipped with the cantilever (41) of forward extension and are used for bearing forming bucket (1), and the cantilever (41) can hold forming bucket (1) and press it to the direction of printing platform (7), be equipped with the butt joint structure for locking forming bucket (1) after forming bucket (1) rises to printing platform (7) between the top of forming bucket (1) and printing platform (7), be equipped with the drive arrangement (5) for driving lifting plate (4) to rise between lifting plate (4) and base (2), be equipped with the positioning structure for clamping forming bucket (1) on cantilever (41).

2. A lock drum mechanism for a forming barrel according to claim 1, wherein: The positioning structure includes clamping blocks (42) arranged on the top surfaces of the two cantilevers (41), respectively, the left and right sides of the two clamping blocks (42) are opposite to each other, the left and right side surfaces of the forming bucket (1) are provided with wedge-shaped blocks (11), and the wedge-shaped blocks (11) gradually narrow from front to back, the inner sides of the clamping blocks (42) are provided with clamping grooves (421), and the side surfaces of the clamping grooves (421) are wedge-shaped surfaces (4211) that gradually incline inward from front to back, and the wedge-shaped blocks (11) can be inserted into and clamped in the corresponding clamping grooves (421) from front to back; the positioning structure further includes limiting stop blocks (43) arranged on the top surfaces of the rear portions of the cantilevers (41).

3. A forming bucket lock bucket mechanism according to claim 1, wherein: The drive arrangement (5) includes a linear actuator (51), one end of the linear actuator (51) is hinged to the base (2), and the other end of the linear actuator (51) is hinged to the lifting plate (4).

4. A forming bucket lock bucket mechanism according to claim 3, wherein: The linear actuator (51) is an electric push rod or a pneumatic cylinder.

5. A forming bucket lock bucket mechanism as claimed in claim 1, wherein: The butt joint structure includes a plurality of positioning pins (12) arranged on the top of the forming bucket (1) and a plurality of pin holes (71) arranged at corresponding positions of the printing platform (7), and the positioning pins (12) can be inserted into the corresponding pin holes (71) from bottom to top.

6. A forming bucket lock bucket mechanism as claimed in claim 1, wherein: Sliding bearings (6) are arranged between the guide shafts (3) and the lifting plate (4) to connect the guide shafts (3) and the lifting plate (4).

7. A forming bucket lock bucket mechanism as claimed in claim 1, wherein: The cantilever (41) includes a main plate (411), and side plates (412) are arranged on the side surfaces of the main plate (411), and a plurality of rib plates (413) are arranged between the side plates (412) and the main plate (411) at intervals.

8. A forming bucket lock bucket mechanism as claimed in claim 1, wherein: Two guide shafts (3) are arranged, and the left and right sides of the lifting plate (4) are slidingly connected to the left and right guide shafts (3), respectively.

9. A forming bucket lock bucket mechanism as claimed in claim 2, wherein: The rear end of the wedge-shaped block (11) is provided with a first chamfer (111), and the front end of the clamping groove (421) is provided with a second chamfer (4212).

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