3D printer locking mechanism

Abstract

The utility model discloses a 3D printer locking mechanism which is symmetrically arranged on the two sides of a material groove or a printing platform, is used for locking or releasing the material groove or the printing platform and comprises a shell, a steering engine arranged outside the shell and an eccentric locking shaft connected with an output shaft of the steering engine. The eccentric lock shaft is sleeved with the two lock cylinders, the two lock cylinders move up and down along with rotation of the eccentric lock shaft, and the lock bar is connected with the lock cylinders and located outside the shell. In the embodiment of the invention, a mechanical locking mode is adopted, and the lock cylinder and the lock bar are driven to move up and down and lock through rotation of the eccentric lock shaft, so that the purpose of locking or releasing the trough by the lock bar is achieved, and the technical effect of automatically locking or releasing the trough or the printing platform is achieved; therefore, the technical problems of equipment pollution caused by manual locking, influence on long-term stable use of equipment and the like are solved.

Description

Technical Field

[0001] This application relates to the field of 3D printers, and more particularly, to a locking mechanism for a 3D printer. Background Art

[0002] In 3D printing equipment, resin is usually placed in a material tank, and then the material tank is fixedly connected to a workbench. For example, patent application number: CN202020395950.X discloses a photocuring 3D printer, including a workbench; a material tank installed on the workbench, the material tank being configured to provide a resin solution for printing; a locking mechanism installed on the workbench, the locking mechanism being configured to lock the material tank on the workbench; the locking mechanism includes at least a pair of locking components, a pair of locking components being arranged on opposite side portions of the material tank, each locking component including a base, a locking tongue, and a power component, locking grooves are provided on opposite side edges of the material tank, the base is fixedly provided on the workbench, a locking hole opposite to the locking groove is provided on the base, the locking tongue is movably provided in the locking hole, and the power component is configured to drive the locking tongue to extend out of the locking hole and snap into the locking groove or snap out of the locking groove and retract into the locking hole. Thus, the material tank can be quickly locked and fixed on the workbench, the disassembly and assembly are more convenient, and a locking structure is used to replace the traditional threaded fastening structure, which has a better fastening effect and can effectively solve the problem of loosening of the material tank.

[0003] Most of the such products on the market currently use the method of manually tightening screws or moving a wedge-shaped lock block or the locking mechanism disclosed in the above patent to lock the resin material tank assembly and the printing platform assembly. In these above methods, when there is resin on the hand, it will contaminate the equipment, resulting in the resin accumulating on components such as the lock for a long time, which will bring a bad experience to the subsequent use. Secondly, manual operation is prone to misoperation, affecting the long-term stable use of the equipment. Summary of the Utility Model

[0004] The main object of this application is to provide a locking mechanism for a 3D printer to solve problems such as equipment contamination caused by manual locking and affecting the long-term stable use of the equipment.

[0005] To achieve the above object, according to one aspect of this application, there is provided a locking mechanism for a 3D printer, symmetrically arranged on both sides of a material tank or a printing platform, for locking or releasing the material tank or the printing platform. The locking mechanism includes: a housing, a servo motor outside the housing, an eccentric lock shaft connected to the output shaft of the servo motor, two lock cores sleeved outside the eccentric lock shaft and moving up and down as the eccentric lock shaft rotates, and a lock bar connected to the lock cores and outside the housing.

[0006] Further, the eccentric lock shaft is composed of multiple sections of first lock shafts and second lock shafts connected at intervals, and the second lock shaft is eccentrically connected between two adjacent first lock shafts; the first lock shafts at both ends are pivotally connected in the housing, and one end of which protrudes outside the housing and is connected to the output shaft of the servo motor.

[0007] Further, the diameter of the second lock shaft is smaller than that of the first lock shaft, and the second lock shaft does not protrude outside the cross-section of the first lock shaft.

[0008] Further, the lock core is of a cylindrical structure, and an activity hole runs through it in the radial direction. The lock core is sleeved outside the second lock shaft through the activity hole.

[0009] Further, an adjusting block, a spring and an adjusting screw are sequentially arranged in the lock core along the axial direction and below the eccentric lock shaft; the adjusting screw is screwed to the lock core.

[0010] Further, the diameter of the activity hole is larger than that of the first lock shaft.

[0011] Further, a sensor is connected outside the housing for monitoring the rotation position of the eccentric lock shaft.

[0012] Further, an activity slot is provided on the housing, and the lock bar is connected to the lock core through a connecting piece passing through the activity slot.

[0013] In the embodiment of the present application, a mechanical locking method is adopted. By rotating the eccentric lock shaft, the lock core and the lock bar are driven to move up and down and locked, achieving the purpose of locking or releasing the material slot by the lock bar, thereby realizing the technical effect of automatically locking or releasing the material slot or the printing platform, and further solving the technical problems such as equipment pollution caused by manual locking and affecting the long-term stable use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings constituting a part of this application are used to provide a further understanding of this application, making other features, objects, and advantages of this application more obvious. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0015] Figure 1 is a schematic connection diagram of a material slot, a printing platform, and a locking mechanism according to an embodiment of this application;

[0016] Figure 2 is a schematic connection diagram of a material slot and a locking mechanism according to an embodiment of this application;

[0017] Figure 3 is a schematic structural diagram of a locking mechanism according to an embodiment of this application;

[0018] Figure 4 is a schematic structural diagram of each component in the housing of the locking mechanism according to an embodiment of this application;

[0019] Figure 5 It is a partial cross-sectional view of the connection between the eccentric lock shaft and the lock core in the embodiment of the present application.

[0020] Reference numerals

[0021] 1. Material groove; 2. Printing platform; 100. Locking mechanism; 3. Housing; 4. Servo; 5. Eccentric lock shaft; 51. First lock shaft; 52. Second lock shaft; 6. Lock core; 61. Movable hole; 7. Lock bar; 8. Adjusting block; 9. Spring; 10. Adjusting screw; 11. Sensor; 12. Movable groove; 13. Connecting piece. Detailed implementation manners

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0023] In the present application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0024] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the terms "mounted", "arranged", "provided with", "connected", "connected to", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] As Figures 1-5 shown, the present application relates to a locking mechanism 100 of a 3D printer. The locking device is symmetrically arranged on both sides of the material tank 1 or the printing platform 2 for locking or releasing the material tank 1 or the printing platform 2; the locking mechanism 100 includes: a housing 3, a servo motor 4 outside the housing 3, an eccentric locking shaft 5 connected to the output shaft of the servo motor 4, two lock cores 6 sleeved outside the eccentric locking shaft 5 and moving up and down as the eccentric locking shaft 5 rotates, and a lock bar 7 connected to the lock core 6 and outside the housing 3; in this embodiment, the lock core 6 is movably connected in the housing 3 and cannot rotate in the housing 3, but can only move up and down; the locking mechanism 100 is fixedly connected to the printing platform 2 and on both sides of the material tank 1. When the servo motor 4 drives the eccentric locking shaft 5 to rotate forward and backward, the eccentric locking shaft 5 drives the lock core 6 to move linearly in the up and down direction, thereby driving the lock bar 7 to move linearly in the up and down direction. The lock bar 7 presses or releases the material tank 1 to achieve the locking and releasing actions of the material tank 1 or the printing platform 2. In the embodiment of the present application, an automatic locking method is adopted. By the rotation of the eccentric locking shaft 5, the lock core 6 and the lock bar 7 are driven to move up and down and lock, achieving the purpose of locking or releasing the material tank 1 by the lock bar 7, thereby realizing the technical effect of automatically locking or releasing the material tank 1 or the printing platform 2, and further solving the technical problems such as equipment pollution caused by manual locking and affecting the long-term stable use of the equipment. Specifically:

[0028] An activity groove 12 is formed on the housing 3, and the lock bar 7 is connected to the lock core 6 through a connecting member 13 passing through the activity groove 12; through the connecting member 13 and the activity groove 12, it is possible to prevent the lock bar 7 and the lock core 6 from rotating under the drive of the eccentric locking shaft 5, ensuring the up and down movement of the eccentric locking shaft 5.

[0029] In this embodiment, the eccentric lock shaft 5 is composed of multiple sections of first lock shafts 51 and second lock shafts 52 connected at intervals. The second lock shaft 52 is eccentrically connected between two adjacent sections of the first lock shafts 51. The first lock shafts 51 at both ends are pivotally connected inside the housing 3, and one end protrudes outside the housing 3 and is connected to the output shaft of the servo 4. The lock core 6 is of a cylindrical structure, and an activity hole 61 runs through it in the radial direction. The lock core 6 is sleeved outside the second lock shaft 52 through the activity hole 61. When the servo 4 drives the eccentric lock shaft 5 to rotate, when the eccentrically arranged second lock shaft 52 rotates to the upper side, it drives the lock core 6 to move upward, driving the lock bar 7 upward, realizing the release of the material chute 1. When the eccentrically arranged second lock shaft 52 rotates to the lower side, the lock core 6 moves downward under its own weight. When the lock bar 7 abuts against the material chute 1, the lock core 6 cannot continue to move downward, and the second lock shaft 52 continues to rotate, thus abutting against the lock core 6 to realize the locking of the lock bar 7.

[0030] Further, the diameter of the second lock shaft 52 is smaller than that of the first lock shaft 51, and the second lock shaft 52 does not protrude outside the cross-section of the first lock shaft 51 to achieve a better eccentric effect and prevent the lock core 6 from shifting outward from the second lock shaft 52. The lock core 6 is sleeved outside the second lock shaft 52 through the activity hole 61, and the diameter of the activity hole 61 is larger than that of the first lock shaft 51, facilitating the installation of the lock core 6.

[0031] In this embodiment, an adjusting block 8, a spring 9, and an adjusting screw 10 are sequentially arranged inside the lock core 6 along the axial direction and below the eccentric lock shaft 5. The adjusting screw 10 is screwed to the lock core 6. When the second lock shaft 52 rotates to the lower side, the lock core 6 moves downward under its own weight, and the lock bar 7 is placed on the material chute 1. When the second lock shaft 52 continues to rotate and abuts against the adjusting block 8, the adjusting block 8 moves downward to compress the spring 9, and the spring 9 compresses the lock core 6, making the lock bar 7 tightly press the material chute 1, and adjusting an appropriate locking force through the elastic force of the spring 9.

[0032] Further, a sensor 11 is connected outside the housing 3 to monitor the rotation position of the eccentric lock shaft 5, so as to know whether the second rotating shaft rotates to the upper side or the lower side, and judge whether the lock bar 7 is in a locked or released state, to achieve more precise automatic control.

[0033] The working principle of the device is as follows: The locking mechanism 100 is fixedly connected to the printing platform 2, and on both sides of the material tank 1, the servo 4 drives the eccentric lock shaft 5 to rotate. When the eccentrically arranged second lock shaft 52 rotates to the upper side, it drives the lock core 6 to move upward, driving the lock bar 7 upward, realizing the release of the material tank 1; when the eccentrically arranged second lock shaft 52 rotates to the lower side, the lock core 6 moves downward due to its own weight, and the lock bar 7 is placed on the material tank 1. When the second lock shaft 52 continues to rotate and abuts against the adjusting block 8, the adjusting block 8 moves downward to compress the spring 9, and the spring 9 compresses the lock core 6, so that the lock bar 7 presses tightly against the material tank 1; realizing the locking and releasing actions of the material tank 1 or the printing platform 2.

[0034] From the above description, it can be seen that the present application achieves the following technical effects: In the embodiment of the present application, an automatic locking method is adopted. By rotating the eccentric lock shaft 5, the lock core 6 and the lock bar 7 are driven to move up and down and lock, achieving the purpose of locking or releasing the material tank 1 by the lock bar 7, thus realizing the technical effect of automatically locking or releasing the material tank 1 or the printing platform 2, and further solving technical problems such as equipment pollution caused by manual locking and affecting the long-term stable use of the equipment.

[0035] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A 3D printer locking mechanism, symmetrically arranged on both sides of the material tank (1) or the printing platform (2), for locking or releasing the material tank (1) or the printing platform (2), characterized in that, The locking mechanism (100) includes: a housing (3), a steering gear (4) outside the housing (3), an eccentric locking shaft (5) connected to the output shaft of the steering gear (4), two lock cores (6) sleeved outside the eccentric locking shaft (5) and moving up and down as the eccentric locking shaft (5) rotates, and a lock bar (7) connected to the lock core (6) and outside the housing (3).

2. The locking mechanism of a 3D printer according to claim 1, characterized in that, The eccentric locking shaft (5) is composed of multiple sections of a first locking shaft (51) and a second locking shaft (52) connected at intervals, and the second locking shaft (52) is eccentrically connected between two adjacent sections of the first locking shaft (51); the first locking shafts (51) at both ends are pivotally connected in the housing (3), and one end protrudes outside the housing (3) and is connected to the output shaft of the steering gear (4).

3. The locking mechanism of a 3D printer according to claim 2, characterized in that, The diameter of the second locking shaft (52) is smaller than the diameter of the first locking shaft (51), and the second locking shaft (52) does not protrude outside the cross-section of the first locking shaft (51).

4. The locking mechanism of a 3D printer according to claim 3, characterized in that, The lock core (6) is of a cylindrical structure, and an activity hole (61) is penetrated in the radial direction. The lock core (6) is sleeved outside the second locking shaft (52) through the activity hole (61).

5. The locking mechanism of a 3D printer according to claim 4, characterized in that, Inside the lock core (6), an adjusting block (8), a spring (9) and an adjusting screw (10) are sequentially arranged along the axial direction and below the eccentric locking shaft (5), and the adjusting screw (10) is screwed to the lock core (6).

6. The locking mechanism of a 3D printer according to claim 4, characterized in that, The diameter of the activity hole (61) is larger than the diameter of the first locking shaft (51).

7. The locking mechanism of a 3D printer according to claim 1, characterized in that, A sensor (11) is connected outside the housing (3) for monitoring the rotation position of the eccentric locking shaft (5).

8. The locking mechanism of a 3D printer according to claim 1, characterized in that, An activity slot (12) is formed in the housing (3), and the lock bar (7) is connected to the lock core (6) through a connecting member (13) passing through the activity slot (12).

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