Angle adjusting mechanism and 3D printer

Abstract

The utility model relates to the technical field of 3D printers, in particular to an angle adjusting mechanism and a 3D printer, the angle adjusting mechanism comprises a mounting base, an elastic rotating piece and a connecting piece, one end of the mounting base is used for being connected with a base of a 3D printer main body, the other end of the mounting base is provided with a through hole, and the inner wall of the through hole is provided with a plurality of first protruding parts at intervals; one end of the elastic rotating piece is inserted into the through hole, the other end of the elastic rotating piece extends out of the through hole, a first limiting part is arranged on the peripheral side of the elastic rotating piece, one end of the connecting piece is fixedly connected with the other end of the elastic rotating piece, the other end of the connecting piece is used for installing a display screen of the 3D printer, and the elastic rotating piece can rotate relative to the through hole through elastic deformation of the elastic rotating piece. After the angle adjusting structure rotates to the designated position, the first limiting part and the first protruding part can be clamped through elastic recovery of the elastic rotating piece, the angle adjusting structure is simple, the adjusting process is easy and convenient, and the production cost and the labor cost are greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printer technical field especially relates to an angle adjusting mechanism and 3D printer. BACKGROUND

[0002] Current 3D printer usually all are equipped with display screen, and the user controls the printer or understands the working condition of the printer, and the current display screen commonly used installation mode is to adopt an angle adjusting mechanism and 3D printer main body are connected, to make display screen can rotate relative to 3D printer main body, to make the user observe the equipment running condition through different observation window, and from different angle to operate equipment.

[0003] And the existing angle adjusting mechanism usually is the cooperation structure of nut screw rod, by unscrewing nut, display screen is rotated to specified angle, and after rotating, nut is screwed again, this structure is more complex, and the adjustment process is tedious, and further causes the waste of production cost and labor cost. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of angle adjusting mechanisms, to solve the problem of the structure of the existing angle adjusting mechanism is more complex, adjustment process is tedious.

[0005] To solve the above problems, the utility model provides an angle adjusting mechanism, comprising:

[0006] Mounting seat, one end of the mounting seat is used to connect with the base of the main body, another end of the mounting seat is provided with a through hole, and a plurality of first protruding portions are arranged at the inner wall of the through hole at intervals;

[0007] Elastic rotating part, one end of the elastic rotating part is inserted into the through hole, another end of the elastic rotating part extends out of the through hole, and a first limiting portion is arranged on the outer circumferential side of the elastic rotating part; and

[0008] Connecting piece, one end of the connecting piece is fixedly connected with another end of the elastic rotating part, and the other end of the connecting piece is used to mount the display screen;

[0009] The elastic rotating part can rotate relative to the through hole, so that the plurality of first protruding portions and the first limiting portion are alternately connected, and the angle of the display screen is adjusted by the connecting piece.

[0010] In an embodiment, the circumferential side of the first protruding portion is arranged in an arc shape, the first limiting portion is an arc-shaped groove, and the first protruding portion is connected to the groove wall of the arc-shaped groove.

[0011] In an embodiment, the first protruding portion is arranged along the axial direction of the through hole, and the first limiting portion is arranged along the axial direction of the elastic rotating part.

[0012] In an embodiment, the inner wall of the hole of the through hole is further provided with a first protrusion, and the outer circumferential side of the elastic rotating member is correspondingly provided with a second protrusion;

[0013] The first protrusion abuts against the second protrusion to limit the rotation angle of the elastic rotating member relative to the through hole.

[0014] In an embodiment, the material of the elastic rotating member is a flexible material.

[0015] In an embodiment, a plurality of first clamping portions are arranged at one end of the elastic rotating member, and the plurality of first clamping portions are clamped to the opening edge of the through hole to axially limit the elastic rotating member.

[0016] In an embodiment, the connecting member includes a sleeve portion and a mounting portion connected to each other, and the sleeve portion and the mounting portion are arranged at an included angle, a plurality of second clamping portions are arranged at the other end of the elastic rotating member, the sleeve portion is sleeved on the other end of the elastic rotating member, the plurality of second clamping portions are clamped to the opening edge of the sleeve portion, and the mounting portion away from one end of the sleeve portion is used for mounting the display screen of the 3D printer.

[0017] In an embodiment, a plurality of limiting grooves are arranged at the outer circumferential side of the other end of the elastic rotating member, a plurality of second protrusions are correspondingly arranged on the sleeve portion, one of the second protrusions is inserted into one of the limiting grooves to circumferentially limit the sleeve portion and the elastic rotating member.

[0018] In an embodiment, the opening edge of the limiting groove is chamfered to form a guide surface, and the guide surface is arranged to be inclined relative to the opening outside of the limiting groove.

[0019] And / or, the plurality of limiting grooves and the plurality of second clamping portions are arranged in the circumferential direction of the elastic rotating member.

[0020] The utility model also provides a kind of 3D printer, the 3D printer includes main body, angle adjusting mechanism and display screen, the angle adjusting mechanism is as described above Angle adjusting mechanism, the angle adjusting mechanism is connected to the base of the main body, and the display screen is installed in the end of the angle adjusting mechanism away from the main body.

[0021] The utility model provides a kind of angle adjusting mechanism, including mounting seat, elastic rotating part and connecting piece, when display screen is located initial position, its first limiting part of elastic rotating part outer circumferential side and the one of multiple first protruding parts of through hole inner wall is connected, when needing to angle adjustment to display screen, only user holds display screen and rotates, at this time, elastic rotating part generates certain rotation gap by the elastic deformation of itself, make itself relative through hole rotate, when rotating to specified position, the elastic recovery of elastic rotating part can make first limiting part and another of multiple first protruding parts are connected, guarantee the stability of display screen after rotating is completed.The angle adjusting structure is simple in structure, and adjustment process is simple, and production cost and artificial cost are greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be simply introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creative labor.

[0023] Figure 1 It is the structural schematic diagram of an embodiment of the angle adjusting mechanism of the utility model;

[0024] Figure 2 It is Figure 1 It is the partial structural schematic diagram of the combination structure of the embodiment and 3D printer base;

[0025] Figure 3 It is Figure 2 It is the enlarged schematic diagram of part structure of the embodiment;

[0026] Figure 4 It is Figure 1 It is the structural schematic diagram of elastic rotating part of the embodiment;

[0027] Figure 5 It is Figure 1 It is the structural schematic diagram of mounting seat of the embodiment;

[0028] Figure 6 It is Figure 1 It is the structural schematic diagram of connecting piece of the embodiment;

[0029] Figure 7 It is Figure 1 It is the combination structure schematic diagram of the embodiment and 3D printer base.

[0030] EXPLANATION OF DRAWINGS:

[0031] 100, angle adjusting mechanism; 10, mounting seat; 11, through hole; 12, first protruding part; 13, first protruding block; 20, elastic rotating piece; 21, first limiting part; 22, second protruding block; 23, first clamping part; 24, limiting groove; 241, guide surface; 25, second clamping part; 30, connecting piece; 31, sleeving part; 311, second protruding part; 32, mounting part; 200, base; 300, display screen.

[0032] The realization, functional features and advantages of the utility model will be further explained in combination with embodiments with reference to the drawings. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0034] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications also change accordingly.

[0035] In addition, if the embodiments of the utility model involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that those skilled in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the utility model.

[0036] When the existing 3D printer adjusts the angle, a nut screw cooperation structure is usually used as an angle adjusting mechanism, and then the display screen is rotated to a specified angle by loosening the nut. After the rotation is completed, the nut is tightened. This structure is relatively complex, and the adjustment process is tedious, which causes waste of production cost and labor cost.

[0037] To solve the above problems, the utility model provides an angle adjusting mechanism, which aims to solve the problems of the existing angle adjusting mechanism, such as complex structure and tedious adjustment process.

[0038] As Figures 1 to 4 And Figure 7 In an embodiment, the angle adjusting mechanism 100 comprises a mounting base 10, an elastic rotating piece 20 and a connecting piece 30, one end of the mounting base 10 is used for connecting with the base 200 of the 3D printer body, the other end of the mounting base 10 is provided with a through hole 11, the inner wall of the through hole 11 is provided with a plurality of first protruding parts 12, one end of the elastic rotating piece 20 is inserted into the through hole 11, the other end of the elastic rotating piece 20 extends out of the through hole 11, the outer circumferential side of the elastic rotating piece 20 is provided with a first limiting part 21, one end of the connecting piece 30 is fixedly connected with the other end of the elastic rotating piece 20, the other end of the connecting piece 30 is used for mounting the display screen 300 of the 3D printer, the elastic rotating piece 20 can rotate relative to the through hole 11, so that the plurality of first protruding parts 12 and the first limiting part 21 are alternately connected, so as to adjust the angle of the display screen 300 through the connecting piece 30.

[0039] In the embodiment, the mounting seat 10 is a component for connecting the entire angle adjusting mechanism 100 with the base 200 of the 3D printer body, one end of which is fixedly connected with the base 200 of the 3D printer, and the connection mode can be welding or integrated design, to ensure the mounting stability of the entire angle adjusting structure; the other end is provided with a through hole 11 in the height direction of the base 200 of the 3D printer, which is used to provide mounting space for the installation of the elastic rotating part 20, and also serves to support and guide the rotation of the elastic rotating part 20. The inner wall of the through hole 11 is also provided with a plurality of first protruding parts 12 at intervals, which are used to position and limit the rotation of the elastic rotating part 20. The elastic rotating part 20 is made of flexible material, so that it has a certain elasticity, one end of which is inserted into the through hole 11 of the mounting seat 10, and a first limiting part 21 is provided on the outer circumferential side, which can be a groove. When the elastic rotating part 20 is rotated to a specified position in the through hole 11, the first limiting part 21 will be clamped with one of the plurality of first protruding parts 12, to realize the fixed limiting of the elastic rotating part 20. One end of the connecting piece 30 is connected with the elastic rotating part 20, and the connection mode can be clamping or threaded connection, and the other end is used to install the display screen 300 of the 3D printer, which can transmit the rotation of the elastic rotating part 20 relative to the through hole 11 to the display screen 300, to realize the angle adjustment of the display screen 300. When the first limiting part 21 is clamped with the first protruding part 12 in different positions, the display screen 300 will be fixed at different angles. It meets the needs of different users for the angle of the display screen 300 in different use scenarios. For example, during printing, the user can adjust the display screen 300 to an angle convenient for observing the printing progress and parameters; when designing and slicing the 3D model, the display screen 300 can be adjusted to an angle more suitable for operation and observation; in addition, during the packaging and transportation of the 3D printer, the display screen 300 can also be well adjusted to the folding state to reduce the overall volume of the 3D printer, facilitating transportation.

[0040] The utility model provides a kind of angle adjusting mechanism 100, when display screen 300 is located initial position, its first limiting portion 21 of the outer circumferential side of elastic rotating part 20 is engaged with one of the multiple first protruding portion 12 of the inner wall of through hole 11, when angle adjustment is needed to display screen 300, only need user holds display screen 300 and rotates, elastic rotating part 20 generates certain rotation gap by the elastic deformation of itself at this time, make itself relative through hole 11 rotate, when rotating to specified position, the elastic recovery of elastic rotating part 20 can make first limiting portion 21 with another of multiple first protruding portion 12 is engaged, and the engagement of first limiting portion 21 and first protruding portion 12 is more stable and reliable by the elastic property of elastic rotating part 20 itself simultaneously.In use, even if 3D printer is subjected to certain degree of vibration, display screen 300 also cannot easily change angle, guarantee the stability and reliability of use.The angle adjusting structure is simple in structure, and the adjusting process is simple, which greatly reduces production cost and labor cost.

[0041] As Figures 1 to 5 And Figure 7 In an embodiment, the circumferential side of the first protruding portion 12 is arranged in an arc shape, and the first limiting portion 21 is an arc-shaped groove, and the first protruding portion 12 is engaged with the groove wall of the arc-shaped groove.

[0042] In the present embodiment, the outer circumferential side of the first protruding portion 12 is arranged in a circular arc shape to provide a smoother contact surface and reduce wear and jamming caused by engagement. At the same time, the arc-shaped circumferential side can also adapt to the stress changes of the elastic rotating part 20 during rotation to ensure the stability of the engagement. At the same time, the first limiting portion 21 is designed as an arc-shaped groove, and the groove width and groove depth are matched with the first protruding portion 12. On the one hand, it ensures that the first protruding portion 12 can be firmly engaged therein, and on the other hand, it ensures that the first protruding portion 12 can smoothly come out of the arc-shaped groove when angle adjustment is needed, realizing the change of angle. Through the arc-shaped design of the first protruding portion 12 and the first limiting portion 21, the smoothness of angle adjustment is greatly improved. When rotating the elastic rotating part 20 to adjust the angle of the display screen 300, the arc-shaped structure makes the first protruding portion 12 more smoothly enter and exit the arc-shaped groove, and the user can feel a smoother rotating experience during operation, avoiding the difficulty of angle adjustment caused by unsmooth engagement.

[0043] As Figures 1 to 5 In an embodiment, the first protruding portion 12 is arranged along the axial direction of the through hole 11, and the first limiting portion 21 is arranged along the axial direction of the elastic rotating part 20.

[0044] In the embodiment, the first protruding part 12 is a strip-shaped column structure, and the first limiting part 21 is a column-shaped arc-shaped slot with a certain length. This design enables the first protruding part 12 to be clamped and fixed with the first limiting part 21 in a relatively long range when the elastic rotating part 20 rotates, increases the contact area between the two, and further improves the stability of clamping. When an accidental collision or vibration occurs, this structure can effectively prevent the angle of the display screen 300 from changing accidentally, and ensures the stability and reliability of the display screen 300 during use.

[0045] As Figures 1 to 5 In an embodiment, the hole inner wall of the through hole 11 is further provided with a first protruding block 13, and the outer circumferential side of the elastic rotating part 20 is correspondingly provided with a second protruding block 22.

[0046] The first protruding block 13 abuts against the second protruding block 22 to limit the rotation angle of the elastic rotating part 20 relative to the through hole 11.

[0047] In the embodiment, the first protruding block 13 is arranged on the inner wall of the through hole 11, and the connection mode between the first protruding block 13 and the inner wall of the through hole 11 can be integrated design. The second protruding block 22 is arranged on the outer circumferential side of the elastic rotating part 20, and the connection mode is the same as above. Both are protruding block structures. During the rotation of the elastic rotating part 20, when the elastic rotating part 20 rotates to a certain angle, the second protruding block 22 will contact and abut against the first protruding block 13, thereby preventing the elastic rotating part 20 from continuing to rotate, limiting the rotation angle. Preventing the elastic rotating part 20 from rotating too much, causing the elastic rotating part 20 to twist and deform, affecting the accuracy of angle adjustment and the service life of the mechanism.

[0048] In an embodiment, the material of the elastic rotating part 20 is a flexible material.

[0049] In the embodiment, the material of the elastic rotating part can be plastic. Plastic has good elasticity, which enables the first limiting part 21 on the outer circumferential side of the elastic rotating part 20 to more easily realize alternate clamping with the first protruding part 12 on the inner wall of the through hole 11 during rotation. When rotating, the elastic rotating part 20 made of plastic material can deform to a certain extent, allowing the first limiting part 21 to smoothly pass the first protruding part 12 and reach the next clamping position, achieving angle adjustment. At the same time, plastic also has a certain flexibility. Compared with some metal materials, it is less likely to break when subjected to external impact, enhancing the durability of the angle adjustment mechanism 100. Moreover, plastic material is relatively light, which will not increase the weight of the entire 3D printer too much, which is conducive to maintaining the stability and portability of the 3D printer as a whole.

[0050] As Figures 1 to 5In an embodiment, a plurality of first clamping portions 23 are arranged at one end of the elastic rotating member 20, and the first clamping portions 23 are clamped to the opening edges of the through hole 11 to axially limit the elastic rotating member 20.

[0051] In the embodiment, a plurality of first clamping portions 23 are arranged at one end of the elastic rotating member 20, and the first clamping portions 23 are hook-shaped or outwardly protruding block-shaped structures, thereby achieving mutual clamping with the opening edges of the through hole 11 to limit the movement of the elastic rotating member 20 in the axial direction. Through the clamping of the plurality of first clamping portions 23 and the opening edges of the through hole 11, the elastic rotating member 20 is fixed and limited in a certain axial position, ensuring that the elastic rotating member 20 always maintains the correct fitting relationship with the mounting seat 10 during rotation, and the cooperation between the first protruding portion 12 and the first limiting portion 21, the first protruding block 13 and the second protruding block 22 and other structures is not disturbed by axial displacement. The problem of unstable angle adjustment of the elastic rotating member 20 due to axial displacement during use is effectively avoided.

[0052] As Figures 1 to 7 In an embodiment, the connecting member 30 includes a sleeve portion 31 and a mounting portion 32 connected with each other, the sleeve portion 31 and the mounting portion 32 are arranged at an included angle, a plurality of second clamping portions 25 are arranged at the other end of the elastic rotating member 20, the sleeve portion 31 is sleeved on the other end of the elastic rotating member 20, the plurality of second clamping portions 25 are clamped to the sleeve portion 31, and the end of the mounting portion 32 away from the sleeve portion 31 is used for mounting the display screen 300 of the 3D printer. Specifically, the sleeve portion 31 and the mounting portion 32 can form a 90-degree included angle. It can be understood that in other embodiments, the sleeve portion 31 and the mounting portion 32 can also form other included angles.

[0053] In the embodiment, the sleeve portion 31 is a tubular structure, the end close to the mounting seat 10 is a cylindrical structure, the sleeve portion 31 is sleeved on the end of the elastic rotating member 20 away from the mounting seat 10, and a plurality of second clamping portions 25 are arranged at the other end of the elastic rotating member 20. The second clamping portions 25 have the same effect as the first clamping portions 23 in the above embodiment, and will not be described here. The opening of the end of the sleeve portion 31 away from the mounting seat 10 is arranged at an inclination, and the mounting portion 32 is connected to the inclined opening edge of the sleeve portion. The connection mode can be welding or integrated design, so as to ensure the installation stability of the two. The end of the mounting portion 32 away from the sleeve portion 31 is provided with a structure, such as a screw hole, a slot or the like, which is specially used for mounting the display screen 300, so as to facilitate the mounting and fixing of the display screen 300. For example, the mounting portion 32 can be designed as a flat plate, and a plurality of screw holes are distributed on the flat plate. The display screen 300 is firmly mounted through screws. This design enables the display screen 300 to change the angle along with the rotation of the elastic rotating member 20 after being mounted, while ensuring the stability of the display screen 300.

[0054] AsFigures 1 to 7 In an embodiment, a plurality of limiting grooves 24 are arranged on the outer circumferential side of the other end of the elastic rotating member 20, and the sleeve part 31 is correspondingly provided with a plurality of second protruding parts 311, one second protruding part 311 is clamped in one limiting groove 24 to limit the circumferential position between the sleeve part 31 and the elastic rotating member 20.

[0055] In the embodiment, the limiting groove 24 is a rectangular groove, and the second protruding part 311 is a rectangular strip structure, which is matched with the limiting groove 24 in size so as to be tightly clamped in the limiting groove 24. When the sleeve part 31 is sleeved on the elastic rotating member 20, the second protruding part 311 is embedded in the corresponding limiting groove 24, thereby limiting the relative movement of the two in the circumferential direction, and ensuring the installation stability between the sleeve part 31 and the elastic rotating member 20. Through the clamping cooperation of the limiting groove 24 and the second protruding part 311, when the elastic rotating member 20 rotates, the sleeve part 31 will rotate synchronously with the elastic rotating member 20 under the circumferential limiting action, thereby driving the display screen 300 to rotate synchronously with the elastic rotating member 20, preventing the relative displacement between the sleeve part 31 and the elastic rotating member 20 in the circumferential direction, causing the actual rotation angle of the display screen 300 to deviate from the expected angle, and reducing the adjustment accuracy.

[0056] As shown in FIG. 1, the sleeve part 31 is provided with a plurality of second clamping parts 25, and the elastic rotating member 20 is correspondingly provided with a plurality of limiting grooves 24, one second clamping part 25 is clamped in one limiting groove 24, thereby limiting the relative movement between the sleeve part 31 and the elastic rotating member 20 in the circumferential direction. Figures 1 to 6 In an embodiment, the opening edge of the limiting groove 24 is chamfered to form a guide surface 241, and the guide surface is arranged to be inclined relative to the opening outside of the limiting groove 24.

[0057] In an embodiment, the plurality of limiting grooves 24 and the plurality of second clamping parts 25 are arranged on the outer circumferential side of the end of the elastic rotating member 20 close to the sleeve part 31.

[0058] In the embodiment, the guide surface 241 is arranged on the end of the limiting groove 24 close to the connecting part 30, and the guide surface 241 is a planar structure with a specific inclination angle. When the sleeve part 31 is sleeved to the elastic rotating member 20, the second protruding part 311 first contacts the guide surface 241, and the second protruding part 311 can gradually slide into the limiting groove 24 along the track of the guide surface 241 due to the inclined guidance of the guide surface 241, thereby improving the connection fluency of the two. The inclination angle of the guide surface 241 is usually between 30°-60°, and specifically, the inclination angle can be 30°, 35°, 40°, 45°, 50°, 55°, or 60°. At this time, the guide surface 241 can ensure the guiding effect, and will not affect the structural strength of the limiting groove 24.

[0059] On the basis of the above-mentioned embodiments, the plurality of limiting grooves 24 and the plurality of clamping portions 23 are cross-distributed on the outer circumferential side of the elastic rotating member 20 close to one end of the sleeve joint portion 31 (for example, a second clamping portion 25 is arranged between two limiting grooves 24). This cross arrangement enables the elastic rotating member 20 to have the functions of circumferential limiting and axial limiting when connected with the sleeve joint portion 31. The second clamping portion 25 is mainly responsible for axial limiting, preventing the elastic rotating member 20 from relatively moving with the sleeve joint portion 31 in the axial direction; and the limiting grooves 24 and the second protruding portion 311 cooperate to be responsible for circumferential limiting, preventing the elastic rotating member 20 from relatively rotating with the sleeve joint portion 31. The cross arrangement of the limiting grooves 24 and the second clamping portion 25 strengthens the connection stability between the elastic rotating member 20 and the sleeve joint portion 31 from two dimensions of the axial direction and the circumferential direction, thereby improving the adjustment stability of the angle adjusting mechanism 100.

[0060] As Figure 7 The utility model also proposes a 3D printer (not completely shown), the 3D printer includes main body, angle adjusting mechanism 100 and display screen 300, angle adjusting mechanism 100 is connected in the base 200 of main body, display screen 300 is installed in the one end of angle adjusting mechanism 100 away from main body, and the specific structure of angle adjusting mechanism 100 refers to the above-mentioned embodiment, because the angle adjusting mechanism 100 has adopted all the technical schemes of the above-mentioned embodiments, therefore at least has all the beneficial effects brought by the technical scheme of the above-mentioned embodiment, here will not repeat.

[0061] The above-mentioned is only the exemplary implementation of the utility model, and does not limit the patent range of the utility model, and all equivalent structural transformations made by the utility model specification and the attached drawings contents, or direct / indirect application in other related technical fields under the technical concept of the utility model are included in the patent protection range of the utility model.

Claims

1. An angle adjustment mechanism applied to a 3D printer, the 3D printer comprising a main body and a display screen, characterized in that, The angle adjusting mechanism comprises: a mounting seat, one end of which is connected to the base of the main body, and the other end of which is provided with a through hole, and the inner wall of the through hole is provided with a plurality of first protruding parts at intervals; a elastic rotating part, one end of which is inserted into the through hole, and the other end of which extends out of the through hole, and the outer circumferential side of the elastic rotating part is provided with a first limiting part; and a connecting part, one end of which is fixedly connected to the other end of the elastic rotating part, and the other end of which is used for mounting the display screen. The elastic rotating part can rotate relative to the through hole, so that the plurality of first protruding parts and the first limiting part are alternately connected, so as to adjust the angle of the display screen through the connecting part.

2. The angle adjustment mechanism of claim 1, wherein The circumferential side of the first protruding part is arranged in an arc shape, the first limiting part is an arc-shaped groove, and the first protruding part is connected to the groove wall of the arc-shaped groove.

3. The angle adjustment mechanism of claim 2, wherein The first protruding part is arranged in the axial direction of the through hole, and the first limiting part is arranged in the axial direction of the elastic rotating part.

4. The angular adjustment mechanism of claim 1, wherein, The inner wall of the hole of the through hole is further provided with a first protruding block, and the outer circumferential side of the elastic rotating part is correspondingly provided with a second protruding block; The first protruding block abuts against the second protruding block to limit the rotation angle of the elastic rotating part relative to the through hole.

5. The angular adjustment mechanism of claim 1, wherein, The material of the elastic rotating part is a flexible material.

6. An angle adjustment mechanism according to any one of claims 1 to 5, wherein A plurality of first connecting parts are arranged at intervals at one end of the elastic rotating part, and the first connecting parts are connected to the opening edge of the through hole to axially limit the elastic rotating part.

7. The angle adjustment mechanism of claim 6, wherein The connecting part comprises a sleeve part and a mounting part connected to each other, and the sleeve part and the mounting part are arranged at an angle, a plurality of second connecting parts are arranged at intervals at the other end of the elastic rotating part, the sleeve part is sleeved on the other end of the elastic rotating part, the second connecting parts are connected to the opening edge of the sleeve part, and the mounting part is used for mounting the display screen of the 3D printer.

8. The angular adjustment mechanism of claim 7, wherein, A plurality of limiting grooves are arranged at intervals on the outer circumferential side of the other end of the elastic rotating part, a plurality of second protruding parts are correspondingly arranged on the sleeve part, one second protruding part is inserted into one limiting groove to limit the circumferential position between the sleeve part and the elastic rotating part.

9. The angular adjustment mechanism of claim 8, wherein, The opening edge of the limiting groove is chamfered to form a guide surface, and the guide surface is arranged obliquely relative to the opening outside of the limiting groove. Furthermore, the plurality of limiting grooves and the plurality of second connecting parts are arranged in the circumferential direction of the elastic rotating part.

10. A 3D printer characterized by, The 3D printer comprises a main body, an angle adjusting mechanism and a display screen, the angle adjusting mechanism is any one of the angle adjusting mechanisms as claimed in claims 1 to 9, the angle adjusting mechanism is connected to the base of the main body, and the display screen is mounted at the end of the angle adjusting mechanism away from the main body.

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