Sliding mechanism and 3D printer

Abstract

The invention relates to a sliding mechanism and a 3D printer, and the sliding mechanism comprises a sliding rail which extends along a first direction; the sliding frame assembly comprises a sliding block, a first pulley and a second pulley, the first pulley and the second pulley are rotatably connected to the sliding block, the sliding block is slidably connected into the sliding rail, and the first pulley, the sliding rail and the second pulley abut against the sliding rail in a sliding mode; wherein the slider is configured to receive a driving force from the outside of the sliding mechanism; when the sliding block receives driving force, the first pulley and the second pulley slide along with the sliding block relative to the sliding rail in the first direction. The problems that a model formed through printing is obvious in layer grain and poor in surface glossiness and the problem that model printing fails are solved, and the product quality and the printing precision are improved.

Description

Technical Field

[0001] The present application relates to the field of 3D printing, and in particular to a sliding mechanism and a 3D printer. Background Art

[0002] Fused Deposition Modeling (FDM) is a technology that constructs a 3D model by depositing molten consumables layer by layer. Therefore, a 3D printer based on Fused Deposition Modeling (FDM) technology has multiple sliding mechanisms. The sliding mechanism can be configured as an X-axis sliding mechanism that directly supports the nozzle mechanism to slide along the X-axis. Alternatively, the sliding mechanism can also be configured as a Z-axis sliding mechanism that supports the X-axis slide mechanism to slide along the Z-axis. Or the sliding mechanism can also be configured as a Y-axis sliding mechanism that supports the molding platform to slide along the Y-axis. If the sliding mechanism vibrates or moves unexpectedly during operation, the printed model will have obvious layer patterns and poor surface gloss, and may even cause the model to fail to print, seriously affecting product quality. Summary of the invention

[0003] Based on this, the present application provides a sliding mechanism, comprising:

[0004] A slide rail extending along a first direction; and

[0005] The slide assembly comprises a slider, and a first pulley and a second pulley respectively rotatably connected to the slider, the slider is slidably connected to the slide rail, and the first pulley slide rail and the second pulley are respectively slidably abutted against the slide rail;

[0006] wherein the slider is configured to receive a driving force from outside the sliding mechanism;

[0007] When the slider receives the driving force, the first pulley and the second pulley slide along the first direction relative to the slide rail together with the slider.

[0008] Furthermore, the axis of the first pulley and the axis of the second pulley are arranged in parallel.

[0009] Furthermore, the slide rail is provided with a first slide groove cooperating with the first pulley and a second slide groove cooperating with the second pulley;

[0010] The first sliding groove and the second sliding groove are arranged in parallel.

[0011] Further, the first slide groove and the second slide groove are axially symmetrically arranged with respect to the slide rail; or, the first slide groove and the second slide groove are centrally symmetrically arranged with respect to the slide rail.

[0012] Further, the first chute has two first chute walls that are disposed opposite to each other and inclined, the first pulley has first inclined surfaces that are disposed at two axial ends of the first pulley, and the first inclined surfaces are disposed in one-to-one correspondence with the first chute walls;

[0013] The second chute has two second chute walls which are arranged opposite to each other and inclined, and the second pulley has second inclined surfaces which are arranged at two axial ends of the second pulley, and the second inclined surfaces are arranged in one-to-one correspondence with the second chute walls;

[0014] When the sliding block receives the driving force, the first inclined surface slides against the corresponding first groove wall, and the second inclined surface slides against the corresponding second groove wall.

[0015] Further, the two first inclined surfaces of the first pulley are symmetrically arranged;

[0016] The two second inclined surfaces of the second pulley are symmetrically arranged.

[0017] Furthermore, the slide assembly further comprises a connecting frame, which is slidably sleeved outside the slide rail and fixedly connected to the slide block;

[0018] The first pulley and the second pulley are respectively arranged outside the slide rail and are respectively rotatably connected to the connection frame;

[0019] The connection frame is configured to fix a wheelbase between the first pulley and the second pulley.

[0020] Further, the first pulley and the second pulley are respectively arranged in the slide rail;

[0021] The slider is configured to fix the wheelbase of the first pulley and the second pulley.

[0022] Further, when the slider does not receive the driving force, the first pulley and the second pulley cooperate with each other to press against the slide rail to prevent the slider from moving relative to the slide rail.

[0023] Further, the slide rail is an X-axis slide rail; or, the slide rail is a Y-axis slide rail; or, the slide rail is a Z-axis slide rail.

[0024] The present application provides a 3D printer, comprising the sliding mechanism provided by any one of the above embodiments.

[0025] Further, the sliding mechanism includes a first sliding mechanism and / or a second sliding mechanism;

[0026] The 3D printer comprises two first sliding mechanisms which are spaced apart and symmetrically arranged;

[0027] The 3D printer further comprises the second sliding mechanism and a nozzle mechanism, wherein the second sliding mechanism is connected to the two first sliding mechanisms, and the nozzle mechanism is connected to the second sliding mechanism;

[0028] The first sliding mechanism is configured to support the second sliding mechanism, and the first sliding mechanism is further configured to drive the second sliding mechanism and the nozzle mechanism to move along the Z-axis direction;

[0029] The second sliding mechanism is configured to support the nozzle mechanism, and the second sliding mechanism is further configured to drive the nozzle mechanism to move along the X-axis direction.

[0030] Compared with the prior art, the beneficial features of the present application are: the sliding mechanism and the 3D printer, the first pulley and the second pulley are slidably connected to the first slide groove and the second slide groove respectively; when the slider receives a driving force, the driving force can overcome the pressure applied by the slide rail to the first pulley and the second pulley, drive the slider to move, thereby driving the first pulley and the second pulley to slide along the first direction relative to the slide rail with the slider; through the above method, the first pulley and the second pulley simultaneously apply pressure to the slide rail to press the slide rail tightly, regardless of whether the slider receives a driving force, the slider will not vibrate or move accidentally, thereby solving the problems of obvious layer patterns and poor surface glossiness of the printed model and the problem of model printing failure, thereby improving product quality and printing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the sliding mechanism structure of this application;

[0032] Figure 2 for Figure 1 The schematic diagram of the sliding mechanism structure shown;

[0033] Figure 3 for Figure 1 The schematic diagram of the sliding mechanism structure shown;

[0034] Figure 4 for Figure 3 AA cross-sectional structural diagram;

[0035] Figure 5 for Figure 3 Left view of

[0036] Figure 6 for Figure 5 Schematic diagram of the middle slide rail structure;

[0037] Figure 7 for Figure 5 Schematic diagram of the structure of the middle carriage assembly;

[0038] Figure 8 for Figure 1 A schematic diagram of the structure of the carriage assembly in the sliding mechanism shown;

[0039] Fig. 9 for Figure 1 A schematic diagram of the structure of the carriage assembly in the sliding mechanism shown;

[0040] Fig.10 This is a schematic diagram of the sliding mechanism structure of this application;

[0041] Fig.11 for Fig.10 The schematic diagram of the sliding mechanism structure shown;

[0042] Fig.12 for Fig.10 The schematic diagram of the sliding mechanism structure shown;

[0043] Fig.13 for Fig.10 An exploded schematic diagram of a partial structure of the sliding mechanism shown;

[0044] Fig.14 for Fig.13 Schematic diagram of the structure of the middle carriage assembly;

[0045] Fig.15 for Fig.10 An exploded schematic diagram of a partial structure of the sliding mechanism shown;

[0046] Fig.16 for Fig.15 Schematic diagram of the structure of the middle carriage assembly;

[0047] Fig.17 for Fig.10 A schematic diagram of a partial structure of a carriage assembly in the sliding mechanism shown;

[0048] Fig.18 for Fig.17 A schematic diagram of a partial structure of a carriage assembly is shown;

[0049] Fig.19 This is a schematic diagram of the 3D printer structure for this application;

[0050] Fig. 20 for Fig.19 The schematic diagram of the 3D printer structure shown;

[0051] Wherein: 1000-3D printer (100-first sliding mechanism, 200-second sliding mechanism, 300-nozzle mechanism, 500-molding platform), 10-sliding mechanism (1-slide rail (101-sliding channel, 102-first slide groove (1021-first groove wall, 1021a-first groove wall, 1021b-first groove wall, 1022-groove bottom, 1023-groove opening), 103-second slide groove (1031-second groove wall, 1031a-second groove wall, 1031b-second groove wall, 1032-groove bottom, 1033-groove opening), 104-allowing channel, 105-first surface, 106- second surface), 2-slideway assembly (201-slider (2011-screw mounting hole), 202-first pulley (2021-first inclined plane, 2021a-first inclined plane, 2021b-first inclined plane, 2022-outer peripheral surface, 2023-side surface), 203-second pulley (2031-second inclined plane, 2031a-second inclined plane, 2031b-second inclined plane, 2032-outer peripheral surface, 2033-side surface), 204-first rotating shaft, 205-second rotating shaft, 206-connecting arm, 207-output end, 208-connecting frame (2081-first frame portion, 2082-second frame portion))). DETAILED DESCRIPTION

[0052] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0053] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0055] Please refer to Figures 1 to 5 and Figures 10 to 13The sliding mechanism 10 of the embodiment of the present application comprises a slide rail 1 and a slide assembly 2. The slide rail 1 extends along a first direction. The slide assembly 2 comprises a slider 201, a first pulley 202 and a second pulley 203. The slider 201 of the slide rail 1 is slidably connected to the slide rail 1. The first pulley 202 and the second pulley 203 are rotatably connected to the slider 201 respectively. The first pulley 202 and the second pulley 203 are slidably abutted against the slide rail 1 respectively.

[0056] The slider 201 is configured to receive a driving force from outside the sliding mechanism 10 .

[0057] When the slider 201 receives the driving force, the driving force can overcome the pressure applied by the slide rail 1 to the first pulley 202 and the second pulley 203, that is, the driving force can overcome the pressure applied by the slide rail 1 to the slider 201 connected to the first pulley 202 and the second pulley 203, and drive the slider 201 to move, thereby driving the first pulley 202 and the second pulley 203 to slide along the first direction relative to the slide rail 1 along with the slider 201.

[0058] Furthermore, the first pulley 202 and the second pulley 203 can cooperate with each other to press against the slide rail 1. Even if the slider 201 receives a driving force, the slider 201 can only move in the preset direction of the first direction in the slide rail 1 under the action of the driving force, and cannot move in other directions or rotate. As an example, for example, the first direction is the up and down direction. When the preset direction is upward, that is, when the driving force drives the slider 201 to move upward, since the first pulley 202 and the second pulley 203 are always kept against the slide rail 1, the slider 201 will not vibrate in the first direction. Similarly, since the first pulley 202 and the second pulley 203 are always kept against the slide rail 1, the slider 201 will not vibrate in other directions.

[0059] In the sliding mechanism 10 of the embodiment of the present application, the first pulley 202 and the second pulley 203 are slidably connected to the first slide groove 102 and the second slide groove 103, respectively. When the slider 201 receives a driving force, the driving force can overcome the pressure applied by the slide rail 1 to the first pulley 202 and the second pulley 203, drive the slider 201 to move, and thereby drive the first pulley 202 and the second pulley 203 to slide along the first direction relative to the slide rail 1 with the slider 201. In the above manner, the first pulley 202 and the second pulley 203 simultaneously apply pressure to the slide rail 1 to press against the slide rail 1. Regardless of whether the slider 201 receives a driving force, the slider 201 will not vibrate or move unexpectedly, which solves the problem of obvious layer patterns and poor surface glossiness of the printed model and the problem of model printing failure, thereby improving product quality and printing accuracy.

[0060] Optionally, when the slider 201 does not receive the driving force, the first pulley 202 and the second pulley 203 cooperate with each other to press against the slide rail 1, which can further prevent the slider 201 from moving relative to the slide rail 1. It can be understood that since the force is mutual, while the first pulley 202 and the second pulley 203 cooperate with each other to press against the slide rail 1, the slide rail 1 will also press against the first pulley 202 and the second pulley 203 to prevent the first pulley 202 and the second pulley 203 from moving relative to the slide rail 1. Since the first pulley 202 and the second pulley 203 are connected to the slider 201, the slider 201 is further prevented from moving relative to the slide rail 1 when the slider 201 does not receive the driving force, thereby improving the stability of the overall structure.

[0061] Optionally, refer to Figure 4 and Figure 5 , the first pulley 202 and the second pulley 203 can be pressed against the slide rail 1 in opposite directions. As an example, when the first pulley 202 and the second pulley 203 are pressed against the slide rail 1 in opposite directions, the first pulley 202 and the second pulley 203 can simultaneously apply opposite pressures to the slide rail 1 to press against the slide rail 1.

[0062] Alternatively, please refer to Fig.12 and Fig.15 , the first pulley 202 and the second pulley 203 can press against the slide rail 1. As an example, when the first pulley 202 and the second pulley 203 press against the slide rail 1, the first pulley 202 and the second pulley 203 can simultaneously apply pressure to the slide rail 1 to press against the slide rail 1.

[0063] Optionally, the driving force may come from a screw rod, and the slider 201 is in transmission connection with the screw rod. When the screw rod rotates, the screw rod drives the slider 201 in transmission connection with the screw rod to move along the length direction of the screw rod.

[0064] As an example, please refer to Figure 2 and Fig.12 A screw rod mounting hole 2011 cooperating with the screw rod may be provided in the middle of the slider 201 .

[0065] It is understandable that in other embodiments, the driving force may also come from other driving devices, which will not be elaborated here.

[0066] Optionally, the carriage assembly 2 may further include a first rotating shaft 204 and a second rotating shaft 205. The first rotating shaft 204 and the second rotating shaft 205 are respectively fixedly connected to the slider 201. The first pulley 202 is connected to the first rotating shaft 204, and the first pulley 202 and the first rotating shaft 204 are coaxially arranged, and the first pulley 202 can rotate around the axis of the first rotating shaft 204. The second pulley 203 is connected to the second rotating shaft 205, and the second pulley 203 and the second rotating shaft 205 are coaxially arranged, and the second pulley 203 can rotate around the axis of the second rotating shaft 205.

[0067] Optionally, the axis of the first pulley 202 is arranged parallel to the axis of the second pulley 203, see Fig.16 That is to say, the axis of the first rotating shaft 204 is parallel to the axis of the second rotating shaft 205. The axis of the first pulley 202 is parallel to the axis of the second pulley 203, so that the force on the slide rail 1 is more uniform, and the first pulley 202 and the second pulley 203 rotate in the same direction, which makes it easier for the slide assembly 2 to move along the slide rail 1.

[0068] Please refer to Figure 2 and Fig.11 The slide rail 1 may be provided with a first slide groove 102 and a second slide groove 103, and the first slide groove 102 cooperates with the first pulley 202. The first pulley 202 may slidably abut against the first slide groove 102. The second slide groove 103 cooperates with the second pulley 203. The second pulley 203 may slidably abut against the second slide groove 103. The first slide groove 102 and the second slide groove 103 are arranged in parallel, and the first slide groove 102 and the second slide groove 103 both extend in the first direction, so that the first pulley 202 cooperated with the first slide groove 102 and the second pulley 203 cooperated with the second slide groove 103 may slide in the first direction.

[0069] Optionally, the first slide groove 102 and the second slide groove 103 may be provided inside the slide rail 1. Figure 2 , the slide rail 1 is provided with a sliding channel 101, a first slide groove 102 and a second slide groove 103. The slider 201 is slidably connected to the sliding channel 101. The first slide groove 102 and the second slide groove 103 are respectively connected to the sliding channel 101. The sliding channel 101, the first slide groove 102 and the second slide groove 103 extend along the first direction respectively. In other words, the first pulley 202 and the second pulley 203 can be inside the slide rail 1. The slider 201, the first pulley 202 and the second pulley 203 are all installed inside the slide rail 1, which not only makes the structure more compact and effectively reduces the volume of the sliding mechanism 10, but also effectively protects the first pulley 202 and the second pulley 203, and improves the service life of the first pulley 202 and the second pulley 203. In addition, the first slide groove 102 and the second slide groove 103 are opened inside the slide rail 1, which can effectively protect the first slide groove 102 and the second slide groove 103. It can not only prevent foreign objects from falling into the first slide groove 102 and the second slide groove 103 to affect the first pulley 202 and the second pulley 203, but also prevent the first slide groove 102 and the second slide groove 103 from being scratched by the outside, thereby further improving the service life of the sliding mechanism 10 and the matching accuracy of the slide assembly 2 and the slide rail 1.

[0070] Optionally, refer to Fig.11In order to minimize the influence on the strength of the slide rail 1, the first slide groove 102 and the second slide groove 103 can be opened outside the slide rail 1 for easy processing. In other words, the first pulley 202 and the second pulley 203 can be outside the slide rail 1.

[0071] In some preferred embodiments, please refer to Fig.15 The first slide groove 102 and the second slide groove 103 can be arranged axially symmetrically with respect to the slide rail 1, which has a simpler structure and is easier to manufacture and install.

[0072] As an example, please refer to Fig.15 The slide rail 1 may have a first surface 105 and a second surface 106 extending along a first direction, and the first surface 105 and the second surface 106 are arranged opposite to each other. The first slide groove 102 is provided on the first surface 105, and the second slide groove 103 is provided on the second surface 106. The first slide groove 102 and the second slide groove 103 are symmetrically arranged with respect to the slide rail 1, which not only has a simple structure and is easy to produce, but also makes the pressures applied by the first pulley 202 and the second pulley 203 to the slide rail 1 more symmetrical. Accordingly, the pressures applied by the slide rail 1 to the first pulley 202 and the second pulley 203 are also more symmetrical, thereby improving the stability of the sliding mechanism 10.

[0073] In other preferred embodiments, please refer to Figure 6 The first slide groove 102 and the second slide groove 103 are centrally symmetrically arranged about the slide rail 1, which can increase the distance between the first slide groove 102 and the second slide groove 103 as much as possible, thereby increasing the wheelbase between the first pulley 202 and the second pulley 203 as much as possible, and fully ensuring the tightening effect.

[0074] As an example, please refer to Figure 6 The cross section of the slide rail 1 may be square. The first slide groove 102 and the second slide groove 103 are respectively arranged close to the two ends of a diagonal line of the cross section of the slide rail 1, so as to increase the wheelbase of the first pulley 202 and the second pulley 203 as much as possible, and fully ensure the tightening effect.

[0075] In some preferred embodiments, when the first pulley 202 slides in the first slide groove 102, the first pulley 202 rotates around the axis of the first pulley 202. The two axial sides of the first pulley 202 respectively abut against the two groove walls of the first slide groove 102. When the second pulley 203 slides in the second slide groove 103, the second pulley 203 rotates around the axis of the second pulley 203. The two axial sides of the second pulley 203 respectively abut against the two groove walls of the second slide groove 103. In other words, the first pulley 202 has two surfaces abutting against the two surfaces of the first slide groove 102, and the second pulley 203 has two surfaces abutting against the two surfaces of the second slide groove 103, please refer to Figure 4 , Figure 5 , Fig.12 and Fig.15 , further ensuring the tightness of fit between the first pulley 202 and the first slide groove 102, and the tightness of fit between the second pulley 203 and the second slide groove 103, further preventing the slider 201 from vibrating and moving unexpectedly.

[0076] As an example, please refer to Figure 2 and Fig.11 , the first direction may be the Z-axis direction, and the X-axis direction, the Y-axis direction and the Z-axis direction are perpendicular to each other. Since the first pulley 202 has two surfaces that abut against the two surfaces of the first slide groove 102, and the second pulley 203 has two surfaces that abut against the two surfaces of the second slide groove 103, the first pulley 202 and the second pulley 203 are further prevented from moving relative to the slide rail 1 along the X-axis direction and the Y-axis direction. The first pulley 202 and the second pulley 203 can only move along the Z-axis direction under the action of the driving force received by the slider 201, thereby preventing the slider 201 fixed to the first rotating shaft of the first pulley 202 and the second rotating shaft of the second pulley 203 from moving relative to the slide rail 1 along the X-axis direction and the Y-axis direction. Moreover, since the first pulley 202 and the second pulley 203 cooperate with each other to press against the slide rail 1, when the slider 201 does not receive the driving force, the pressure applied by the slide rail 1 to the first pulley 202 and the second pulley 203 can prevent the slider 201 from vibrating or accidentally moving during operation, resulting in the printed model having obvious layer patterns and poor surface gloss or causing the model to fail to print, thereby improving product quality and printing accuracy.

[0077] For further information, please refer to Figure 6 and Fig.13 The first chute 102 may have two first chute walls 1021. The two first chute walls 1021 are disposed opposite to each other and are inclined. The first pulley 202 has two first inclined surfaces 2021. The two first inclined surfaces 2021 are disposed at two axial ends of the first pulley 202. The first inclined surfaces 2021 are disposed one-to-one with the first chute walls 1021.

[0078] Please refer to Figure 6 and Fig.12 The second chute 103 may have two second chute walls 1031. The two second chute walls 1031 are disposed opposite to each other and are inclined. The second pulley 203 has two second inclined surfaces 2031. The two second inclined surfaces 2031 are disposed at two axial ends of the second pulley 203. The second inclined surfaces 2031 are disposed one-to-one with the second chute walls 1031.

[0079] When the slider 201 receives no driving force, the first inclined surface 2021 and the second inclined surface 2031 press against the corresponding first groove wall 1021 and the second groove wall 1031, thereby further preventing the slider 201 from moving in any direction relative to the slide rail 1 when the slider 201 receives no driving force.

[0080] When the slider 201 receives the driving force, the first inclined surface 2021 and the second inclined surface 2031 slide against the corresponding first groove wall 1021 and the second groove wall 1031 , so that the slider 201 can only move along the first direction relative to the slide rail 1 under the driving force.

[0081] As an example, please refer to Figure 5 and Fig.12 After the slide assembly 2 is connected to the slide rail 1, the first inclined surface 2021a of the first pulley 202 abuts against the first groove wall 1021a of the first slide groove 102, and the first inclined surface 2021b of the first pulley 202 abuts against the first groove wall 1021b of the first slide groove 102. In other words, the two first inclined surfaces 2021 of the first pulley 202 abut against the two first groove walls 1021 of the first slide groove 102 respectively, and the first slide groove 102 applies forces in two different directions to the first pulley 202, so the abutment is more effective. Similarly, the second inclined surface 2031a of the second pulley 203 abuts against the second groove wall 1031a of the second chute 103, and the second inclined surface 2031b of the second pulley 203 abuts against the second groove wall 1031b of the second chute 103, that is, the two second inclined surfaces 2031 of the second pulley 203 abut against the two second groove walls 1031 of the second chute 103, and the second chute 103 applies two forces in different directions to the second pulley 203, so that the abutment is more effective. Under the joint action of the first pulley 202, the second pulley 203 and the slide rail 1, the slider 201 can be effectively restricted, so that the slider 201 cannot move in any direction relative to the slide rail 1 when not receiving the driving force, and the slider 201 can only move in the first direction relative to the slide rail 1 when receiving the driving force.

[0082] Please refer to Figure 7 and Fig.16 The first pulley 202 has an outer peripheral surface 2022 and two side surfaces 2023. The two side surfaces 2023 of the first pulley 202 are respectively arranged at two axial ends of the outer peripheral surface 2022 of the first pulley 202. The first inclined surface 2021 is provided at the connection between the side surface 2023 of the first pulley 202 and the outer peripheral surface 2022 of the first pulley 202. In other words, the first inclined surface 2021 connects the side surface 2023 of the first pulley 202 and the outer peripheral surface 2022 of the first pulley 202. The first chute 102 also has a groove bottom 1022 connected between the two first groove walls 1021.

[0083] In a preferred embodiment, please refer to Figure 4 and Fig.15 , there is a gap between the outer circumferential surface 2022 of the first pulley 202 and the groove bottom 1022 of the first chute 102. That is to say, the outer circumferential surface 2022 of the first pulley 202 does not contact the groove bottom 1022 of the first chute 102, so that the first inclined surface 2021 can be more effectively abutted against the first groove wall 1021. Since the product size cannot be absolutely accurate during production, when there is a gap between the outer circumferential surface 2022 of the first pulley 202 and the groove bottom 1022 of the first chute 102, even if the size of the first pulley 202 and the slide rail 1 have a certain error, it can also ensure that the first inclined surface 2021 is effectively abutted against the first groove wall 1021. It is avoided that the outer circumferential surface 2022 of the first pulley 202 abuts against the groove bottom 1022 of the first chute 102, and the first inclined surface 2021 of the first pulley 202 cannot abut against the first groove wall 1021 of the first chute 102. Similarly, there is also a gap between the outer peripheral surface 2032 of the second pulley 203 and the groove bottom 1032 of the second slide groove 103. Therefore, it can be fully ensured that the first inclined surface 2021 of the first pulley 202 can effectively abut against the first groove wall 1021 of the first slide groove 102, and the second inclined surface 2031 of the second pulley 203 can effectively abut against the second groove wall 1031 of the second slide groove 103, so that when the slider 201 does not receive the driving force, the first pulley 202 and the second pulley 203 are pressed against the slide rail 1 to further prevent the slider 201 from moving relative to the slide rail 1; when the slider 201 receives the driving force, the first pulley 202 and the second pulley 203 slide relative to the slide rail 1 along the first direction together with the slider 201.

[0084] Optionally, refer to Figure 7 and Fig.16 , the two first inclined surfaces 2021 of the first pulley 202 are symmetrically arranged. The two second inclined surfaces 2031 of the second pulley 203 are symmetrically arranged. Thus, the force on the slide rail 1 is more uniform, and since the force is mutual, the pressure applied by the slide rail 1 to the first pulley 202 is more symmetrical. Similarly, the pressure applied by the slide rail 1 to the second pulley 203 is more symmetrical. In other words, the pressure applied by the slide rail 1 to the carriage assembly 2 is more symmetrical.

[0085] In some preferred embodiments, please refer to Fig.10The carriage assembly 2 may further include a connection frame 208. The connection frame 208 is slidably sleeved outside the slide rail 1, and the connection frame 208 is fixedly connected to the slider 201. The first pulley 202 and the second pulley 203 are respectively arranged outside the slide rail 1. Moreover, the first pulley 202 and the second pulley 203 are rotatably connected to the connection frame 208. The connection frame 208 wraps the first pulley 202 and the second pulley 203, which can effectively protect the first pulley 202 and the second pulley 203 and improve the service life of the first pulley 202 and the second pulley 203. The connection frame 208 is configured to fix the wheelbase of the first pulley 202 and the second pulley 203.

[0086] As an example, please refer to Fig.17 The first rotating shaft 204 of the first pulley 202 and the second rotating shaft 205 of the second pulley 203 can be fixed to the connecting frame, so that the connecting frame 208 can effectively fix the wheelbase of the first pulley 202 and the second pulley 203.

[0087] Please refer to Fig.17 The connecting frame 208 can also be configured to fix the wheelbase of the first pulley 202 and the second pulley 203, which not only facilitates better connection of the first pulley 202 and the second pulley 203 with the slider 201, but also the frame structure is more stable and less prone to deformation compared to the single-arm structure, and can more securely fix the wheelbase of the first pulley 202 and the second pulley 203.

[0088] The connection frame 208 can also be configured as the output end of the sliding mechanism 10, so that the driving force received by the slider 201 is output to other mechanisms through the connection frame 208. Configuring the connection frame 208 as the output end of the sliding mechanism 10 has a larger installation area and is more convenient for connecting with other mechanisms. Moreover, since the connection frame 208 is not easy to deform, it can further ensure that the sliding mechanism 10 can stably output the driving force to other mechanisms. Moreover, the connection frame 208 has multiple surfaces with different orientations, which is more convenient for assembly and connection with other mechanisms and more flexible in use.

[0089] As an example, the connection frame 208 can be connected and fixed with other mechanisms by screws. Alternatively, the connection frame 208 can also be welded and fixed with other mechanisms. Alternatively, the connection frame 208 can also be connected and fixed with other mechanisms in other ways, which are not limited here.

[0090] For further information, please refer to Fig.12 In order to effectively connect the slider 201 inside the fixed slide rail 1 and the connecting frame 208 sleeved on the outside of the slide rail 1, the slide assembly 2 may further include a connecting arm 206.

[0091] Please refer to Fig.13The slide rail 1 may further include a sliding channel 101. The sliding channel 101 extends along a first direction. The slider 201 is slidably connected to the sliding channel 101. The slide rail 1 may further include a clearance channel 104. The clearance channel 104 extends along the first direction and is in communication with the sliding channel 101.

[0092] Please refer to Fig.13 The connecting arm 206 is fixedly connected to the slider 201 and the connecting frame 208, and the connecting arm 206 is disposed in the clearance channel 104. When the slider 201 slides in the first direction in the sliding channel 101 under the action of the received driving force, the connecting arm 206 fixed to the slider 201 also slides in the clearance channel 104, thereby driving the connecting frame 208 fixed to the connecting arm 206 to slide in the first direction. The connecting arm 206 can better fix the connecting frame 208 and the slider 201, so that the slide assembly 2 can be installed on the slide rail 1 more quickly and accurately.

[0093] As an example, in order to facilitate assembly and disassembly, the connection frame 208 can be formed by splicing the first frame part 2081 and the second frame part 2082. Fig.13 The first frame portion 2081 and the second frame portion 2082 may be detachably fixed. For example, the first frame portion 2081 and the second frame portion 2082 may be fixed by screws.

[0094] Optionally, in order to ensure the stability of the slide assembly, the slider 201, the first rotating shaft 204 of the first pulley 202 and the second rotating shaft 205 of the second pulley 203 are respectively fixedly connected to the first frame portion 2081.

[0095] In other preferred embodiments, please refer to Figure 2 , the first pulley 202 and the second pulley 203 are respectively arranged in the slide rail 1. The slider 201 is configured to fix the wheelbase of the first pulley 202 and the second pulley 203. That is, the first rotating shaft and the second rotating shaft are directly fixedly connected to the slider 201, so as to more compactly and effectively connect the first pulley 202 and the second pulley 203 together, so that the wheelbase of the first pulley 202 and the second pulley 203 can be fixed more securely.

[0096] Optionally, in the above embodiment, in order to facilitate the output of the driving force received by the slider 201 to the outside of the slide rail 1, the slide assembly 2 further includes a connecting arm 206 and an output end 207. The above slide rail 1 may also be provided with a clearance channel 104. The clearance channel 104 extends along the first direction, and the clearance channel 104 is connected to the sliding channel 101. The output end 207 is located outside the slide rail 1. The connecting arm 206 is inserted into the clearance channel 104, and the connecting arm 206 is fixedly connected to the slider 201 and the output end 207, respectively, so that the driving force received by the slider 201 is output to the outside of the slide rail 1 through the output end 207.

[0097] Optionally, the output end 207 is configured as an output end of the sliding mechanism 10 , so that the driving force received by the slider 201 is output to other mechanisms through the output end 207 .

[0098] It is understandable that there is at least one first pulley 202. There is at least one second pulley 203. The number of first pulleys 202 and the number of second pulleys 203 may be the same. The number of first pulleys 202 and the number of second pulleys 203 may also be different.

[0099] For an example, see Figure 8 and Fig. 9 , the connecting arm 206 is connected to the side of the slider 201 close to the first pulley 202. There are at least two first pulleys 202. All the first pulleys 202 are arranged at intervals, and all the first pulleys 202 are rotatably connected to the slider 201, and all the first pulleys 202 are slidably abutted in the first slide groove 102, so that the pressure applied by the slide rail 1 to the slide assembly 2 is closer to the connecting arm 206, further improving the stability of the sliding mechanism 10.

[0100] As an example, the slide rail 1 may be an X-axis slide rail, or the slide rail 1 may be a Y-axis slide rail, or the slide rail 1 may be a Z-axis slide rail.

[0101] The 3D printer 1000 of the embodiment of the present application may include the sliding mechanism 10 provided by any of the above embodiments.

[0102] Optionally, refer to Fig.19 and Fig. 20 , the 3D printer 1000 may include two first sliding mechanisms 100. The two first sliding mechanisms 100 are arranged at intervals and symmetrically. The above-mentioned 3D printer 1000 may also include a second sliding mechanism 200 and a nozzle mechanism 300. The second sliding mechanism 200 is connected to the two first sliding mechanisms 100. The nozzle mechanism 300 is connected to the second sliding mechanism 200. Among them, the first sliding mechanism 100 can be the sliding mechanism 10 provided in any of the above-mentioned embodiments. The second sliding mechanism 200 can also be the sliding mechanism 10 provided in any of the above-mentioned embodiments. The first sliding mechanism 100 is configured to support the second sliding mechanism 200, and the first sliding mechanism 100 is also configured to drive the second sliding mechanism 200 and the nozzle mechanism 300 to move along the Z-axis direction. The second sliding mechanism 200 is configured to support the nozzle mechanism 300, and the second sliding mechanism 200 is also configured to drive the nozzle mechanism 300 to move along the X-axis direction.

[0103] In one example, the first sliding mechanism 100 and the second sliding mechanism 200 are respectively the sliding mechanisms 10 provided in any of the above-mentioned embodiments. Therefore, the names and numbers of the components in the first sliding mechanism 100 and the second sliding mechanism 200 follow the names and numbers of the components in the sliding mechanism 10. The structures of the first sliding mechanism 100 and the second sliding mechanism 200 may be the same or different. The slide rail 1 of the first sliding mechanism 100 is a Z-axis slide rail. The slide rail 1 of the second sliding mechanism 200 is an X-axis slide rail, and both ends of the slide rail 1 of the second sliding mechanism 200 are fixed to the output end of the first sliding mechanism 100. The nozzle mechanism 300 is fixed to the output end of the second sliding mechanism 200.

[0104] Since the nozzle mechanism 300 has a certain weight, when the nozzle mechanism 300 moves to be close to one of the first sliding mechanisms 100, the pressure borne by the first sliding mechanism 100 is much greater than the pressure borne by the other first sliding mechanism 100. If the first sliding mechanism 100 cannot effectively support the nozzle mechanism 300, it will cause the slide rail 1 of the second sliding mechanism 200 to tilt or even fall, thereby causing the nozzle mechanism 300 to tilt or even fall, seriously affecting the printing of the model. The first pulley 202 and the second pulley 203 of the first sliding mechanism 100 in the present application are slidably abutted against the first slide groove 102 and the second slide groove 103 respectively. When the slider 201 does not receive the driving force, the first pulley 202 and the second pulley 203 cooperate to press against the slide rail 1, which can further prevent the slider 201 from moving relative to the slide rail 1. When the slider 201 receives the driving force, the first pulley 202 and the second pulley 203 slide relative to the slide rail 1 along the first direction with the slider 201. The first pulley 202 and the second pulley 203 apply pressures in opposite directions to the slide rail 1 to clamp the slide rail 1. Regardless of whether the slider 201 receives a driving force, the slider 201 will not vibrate or move unexpectedly, thereby preventing the second sliding mechanism 200 from tilting or even falling. When the slider 201 does not receive a driving force, the first pulley 202 and the second pulley 203 cooperate to press against the slide rail 1, so that the slider 201 cannot move relative to the slide rail 1. In other words, when the slider 201 does not receive a driving force, the nozzle mechanism 300 will not vibrate due to the first sliding mechanism 100. Moreover, under the action of the first pulley 202 and the second pulley 203, when the slider 201 receives a driving force, the slider 201 will only move in the first direction relative to the slide rail 1. In other words, when the slider 201 receives a driving force, the nozzle mechanism 300 will not vibrate due to the first sliding mechanism 100, thereby avoiding the problem of obvious layer patterns and poor surface glossiness of the printed model and the problem of model printing failure, thereby improving product quality and printing accuracy.

[0105] It is understandable that in other embodiments, the second sliding mechanism 200 may also have a structure different from that of the sliding mechanism 10 and may be another sliding mechanism.

[0106] Optionally, refer to Fig.19 and Fig. 20 The printer may further include a third sliding mechanism (not shown) and a molding platform 500 connected to the third sliding mechanism. The third sliding mechanism may be the sliding mechanism 10 provided in any of the above embodiments, and the slide rail 1 of the third sliding mechanism is a Y-axis slide rail.

[0107] As an example, the third sliding mechanism can be Figures 10 to 18 The sliding mechanism 10 shown has the connection frame 208 as the output end, which makes it easier to install the molding platform 500, and the connection relationship is more stable after assembly.

[0108] In one example, the first sliding mechanism 100, the second sliding mechanism 200 and the third sliding mechanism are respectively the sliding mechanisms 10 provided in any of the above-mentioned embodiments. Therefore, the names and numbers of the components in the first sliding mechanism 100, the second sliding mechanism 200 and the third sliding mechanism follow the names and numbers of the components in the sliding mechanism 10. The structures of the first sliding mechanism 100, the second sliding mechanism 200 and the third sliding mechanism may be the same or different. The slide rail 1 of the first sliding mechanism 100 is a Z-axis slide rail. The slide rail 1 of the second sliding mechanism 200 is an X-axis slide rail, and both ends of the slide rail 1 of the second sliding mechanism 200 are fixed to the output end of the first sliding mechanism 100. The nozzle mechanism 300 is fixed to the output end of the second sliding mechanism 200. The slide rail of the third sliding mechanism is a Y-axis slide rail. The molding platform 500 is fixed to the output end of the third sliding mechanism.

[0109] Under the action of the first sliding mechanism 100, the second sliding mechanism 200 and the third sliding mechanism, vibration or accidental movement of the nozzle and the molding platform 500 during the XYZ three-axis movement can be avoided, further solving the problems of obvious layer patterns and poor surface gloss during model molding and printing failure.

[0110] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0111] The above embodiments only express the preferred implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A sliding mechanism, characterized in that: include: A slide rail extending along a first direction; and The slide assembly comprises a slider, and a first pulley and a second pulley respectively rotatably connected to the slider, the slider is slidably connected to the slide rail, and the first pulley slide rail and the second pulley are respectively slidably abutted against the slide rail; wherein the slider is configured to receive a driving force from outside the sliding mechanism; When the slider receives the driving force, the first pulley and the second pulley slide along the first direction relative to the slide rail together with the slider.

2. The sliding mechanism according to claim 1, characterized in that: The axis of the first pulley and the axis of the second pulley are arranged in parallel.

3. The sliding mechanism according to claim 1, characterized in that: The slide rail is provided with a first slide groove matched with the first pulley and a second slide groove matched with the second pulley; The first sliding groove and the second sliding groove are arranged in parallel.

4. The sliding mechanism according to claim 3, characterized in that: The first slide groove and the second slide groove are arranged axially symmetrically with respect to the slide rail; or, the first slide groove and the second slide groove are arranged centrally symmetrically with respect to the slide rail.

5. The sliding mechanism according to claim 3, characterized in that: The first chute has two first chute walls which are arranged opposite to each other and inclined, and the first pulley has first inclined surfaces which are arranged at two axial ends of the first pulley, and the first inclined surfaces are arranged in one-to-one correspondence with the first chute walls; The second chute has two second chute walls which are arranged opposite to each other and inclined, and the second pulley has second inclined surfaces which are arranged at two axial ends of the second pulley, and the second inclined surfaces are arranged in one-to-one correspondence with the second chute walls; When the sliding block receives the driving force, the first inclined surface slides against the corresponding first groove wall, and the second inclined surface slides against the corresponding second groove wall.

6. The sliding mechanism according to claim 5, characterized in that: The two first inclined surfaces of the first pulley are symmetrically arranged; The two second inclined surfaces of the second pulley are symmetrically arranged.

7. The sliding mechanism according to claim 1, characterized in that: The slide assembly also includes a connecting frame, which is slidably sleeved outside the slide rail and fixedly connected to the slide block; The first pulley and the second pulley are respectively arranged outside the slide rail and are respectively rotatably connected to the connection frame; The connection frame is configured to fix a wheelbase between the first pulley and the second pulley.

8. The sliding mechanism according to claim 1, characterized in that: The first pulley and the second pulley are respectively arranged in the slide rail; The slider is configured to fix the wheelbase of the first pulley and the second pulley.

9. The sliding mechanism according to claim 1, characterized in that: When the slider does not receive the driving force, the first pulley and the second pulley cooperate with each other to press against the slide rail to prevent the slider from moving relative to the slide rail.

10. The sliding mechanism according to claim 1, characterized in that: The slide rail is an X-axis slide rail; or, the slide rail is a Y-axis slide rail; or, the slide rail is a Z-axis slide rail.

11. A 3D printer, characterized in that: include: A sliding mechanism as claimed in any one of claims 1 to 10.

12. The 3D printer according to claim 11, wherein: The sliding mechanism includes a first sliding mechanism and / or a second sliding mechanism; The 3D printer comprises two first sliding mechanisms which are spaced apart and symmetrically arranged; The 3D printer further comprises the second sliding mechanism and a nozzle mechanism, wherein the second sliding mechanism is connected to the two first sliding mechanisms, and the nozzle mechanism is connected to the second sliding mechanism; The first sliding mechanism is configured to support the second sliding mechanism, and the first sliding mechanism is further configured to drive the second sliding mechanism and the nozzle mechanism to move along the Z-axis direction; The second sliding mechanism is configured to support the nozzle mechanism, and the second sliding mechanism is further configured to drive the nozzle mechanism to move along the X-axis direction.

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