Sliding mechanism and 3D printer

Abstract

The utility model relates to a sliding mechanism and a 3D printer, and the sliding mechanism comprises a sliding rail which extends in a first direction, and the outer surface of the sliding rail is provided with a first sliding groove and a second sliding groove which extend in the first direction; the sliding frame assembly comprises a sliding block, a first pulley and a second pulley, wherein the first pulley and the second pulley are rotationally connected to the sliding block. The sliding block is connected into the sliding rail in a sliding mode. The first pulley and the second pulley abut against the sliding rail oppositely, the first pulley abuts against the first sliding groove in a sliding mode, and the second pulley abuts against the second sliding groove in a sliding mode. 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 3D models by depositing molten materials layer by layer. Therefore, 3D printers based on Fused Deposition Modeling (FDM) technology have 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. Alternatively, the sliding mechanism can also be configured as a Y-axis sliding mechanism that supports the forming 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. Utility Model Content

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

[0004] A slide rail extends in a first direction, and an outer surface of the slide rail is provided with a first slide groove and a second slide groove respectively extending in the first direction; and

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

[0006] 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 slide rail has a first surface and a second surface extending along a first direction, and the first surface and the second surface are arranged opposite to each other;

[0009] The first slide groove is opened on the first surface, the second slide groove is opened on the second surface, the first slide groove and the second slide groove are symmetrically arranged with respect to the slide rail, and the notch of the first slide groove and the notch of the second slide groove are arranged opposite to each other.

[0010] Furthermore, the first chute has two first chute walls that are disposed opposite to each other and inclined, and the first pulley has first inclined surfaces disposed at both axial ends of the first pulley, and the first inclined surfaces are disposed in a one-to-one correspondence with the first chute walls;

[0011] The second chute has two second groove walls that are arranged opposite to each other and inclined, and the second pulley has second inclined surfaces respectively arranged at two axial ends of the second pulley, and the second inclined surfaces are arranged in a one-to-one correspondence with the second groove walls;

[0012] When the slider 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.

[0013] Furthermore, the two first inclined surfaces of the first pulley are symmetrically arranged;

[0014] The two second inclined surfaces of the second pulley are symmetrically arranged.

[0015] Furthermore, the axis of the first pulley and the axis of the second pulley are arranged in parallel.

[0016] Furthermore, the carriage assembly further comprises a connecting frame;

[0017] The connecting frame is slidably mounted on the outside of the slide rail and is fixedly connected to the slider;

[0018] The first pulley and the second pulley are rotatably connected to the connecting frame respectively;

[0019] The connecting frame is configured to fix the wheelbase between the first pulley and the second pulley; the connecting frame is also configured as the output end of the sliding mechanism.

[0020] Furthermore, a sliding channel extending along a first direction is defined in the slide rail, and a yield channel extending along the first direction and communicating with the sliding channel is also defined on the slide rail;

[0021] The slide assembly further comprises a connecting arm fixedly connecting the slider and the connecting frame, and the connecting arm is passed through the yield channel.

[0022] Furthermore, when the slider does not receive the driving force, the first pulley and the second pulley 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: a sliding mechanism provided by any one of the above embodiments.

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

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

[0027] The 3D printer further includes a 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 apply opposite pressure to the slide rail to clamp the slide rail, 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 gloss 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 This is a schematic diagram of the sliding mechanism structure of this application;

[0033] Figure 3 This is a schematic diagram of the sliding mechanism structure of this application;

[0034] Figure 4 This is an exploded schematic diagram of the sliding mechanism structure of this application;

[0035] Figure 5 for Figure 4 Schematic diagram of the middle carriage assembly structure;

[0036] Figure 6This is a partial exploded diagram of the structure of the sliding mechanism of this application;

[0037] Figure 7 for Figure 6 Schematic diagram of the middle carriage assembly structure;

[0038] Figure 8 This is a schematic diagram of the partial structure of the slide assembly in the sliding mechanism of this application;

[0039] Figure 9 for Figure 8 A schematic diagram of a partial structure of the carriage assembly shown;

[0040] Figure 10 This is a schematic diagram of the 3D printer structure for this application;

[0041] Figure 11 This is a schematic diagram of the 3D printer structure for this application;

[0042] Among them: 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-yield channel, 105-first surface, 106-second surface), 2-slide assembly (201-slider (2011-screw mounting hole), 202-first pulley (2021-first inclined surface, 2021a-first inclined surface, 2021b-first inclined surface, 2022-outer peripheral surface, 2023-side surface), 203-second pulley (2031-second inclined surface, 2031a-second inclined surface, 2031b-second inclined surface, 2032-outer peripheral surface, 2033-side surface), 204-first rotating shaft, 205-second rotating shaft, 206-connecting arm, 208-connecting frame (2081-first frame portion, 2082-second frame portion))). DETAILED DESCRIPTION

[0043] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0044] 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 referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0045] 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 pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0046] Please refer to Figures 1 to 3 The sliding mechanism 10 of the embodiment of the present application includes a slide rail 1 and a slide assembly 2.

[0047] The slide rail 1 extends along the first direction. A first slide groove 102 and a second slide groove 103 are formed on the outer surface of the slide rail 1. The first slide groove 102 and the second slide groove 103 are arranged in parallel and extend along the first direction respectively.

[0048] The carriage assembly 2 includes a slider 201, a first pulley 202, and a second pulley 203. The slider 201 is slidably connected to the slide rail 1. The first pulley 202 and the second pulley 203 are each rotatably connected to the slider 201. The first pulley 202 and the second pulley 203 face each other and abut against the slide rail 1, wherein the first pulley 202 slidably abuts the first slide groove 102, and the second pulley 203 slidably abuts the second slide groove 103.

[0049] The slider 201 is configured to receive a driving force from outside the sliding mechanism 10 .

[0050] When the slider 201 receives the driving force, the driving force can overcome the pressure applied by the slide rail 1 on the first pulley 202 and the second pulley 203, that is, the driving force can overcome the pressure applied by the slide rail 1 on the slide assembly 2, driving 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.

[0051] Furthermore, since the first pulley 202 and the second pulley 203 are always kept in contact with the slide rail 1, even if the slider 201 receives a driving force, the slider 201 can only move in the first direction within 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 in contact with 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 in contact with the slide rail 1, the slider 201 will not vibrate in other directions.

[0052] In the sliding mechanism 10 of the embodiment of the present application, the first pulley 202 and the second pulley 203 are slidably abutted against 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 exerted by the slide rail 1 on the first pulley 202 and the second pulley 203, driving the slider 201 to move, thereby driving the first pulley 202 and the second pulley 203 to slide relative to the slide rail 1 along the first direction along with the slider 201. In the above manner, the first pulley 202 and the second pulley 203 exert opposite pressure on 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 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.

[0053] Optionally, when the slider 201 receives no driving force, the first pulley 202 and the second pulley 203 press against the slide rail 1 to prevent the slider 201 from moving relative to the slide rail 1. Since the force acts mutually, while the first pulley 202 and the second pulley 203 press against the slide rail 1, the slide rail 1 also presses 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 receives no driving force, thereby improving the stability of the overall structure.

[0054] Optionally, the driving force can 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.

[0055] As an example, please refer to Figure 5 A screw rod mounting hole 2011 may be provided in the middle of the slider 201 .

[0056] It is understandable that in other embodiments, the driving force may also come from other driving devices, which will not be described in detail here.

[0057] 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 is coaxially disposed with the first rotating shaft 204. The first pulley 202 can rotate about the axis of the first rotating shaft 204. The second pulley 203 is connected to the second rotating shaft 205 and is coaxially disposed with the second rotating shaft 205. The second pulley 203 can rotate about the axis of the second rotating shaft 205.

[0058] Alternatively, refer to Figure 6 The first slide groove 102 and the second slide groove 103 can be arranged symmetrically about the axis of the slide rail 1, which has a simpler structure and is easier to produce and install.

[0059] As an example, please refer to Figure 6 The slide rail 1 may have a first surface 105 and a second surface 106 extending along a first direction, the first surface 105 and the second surface 106 being disposed opposite each other. The first slide groove 102 is formed on the first surface 105, and the second slide groove 103 is formed on the second surface 106. The first slide groove 102 and the second slide groove 103 are formed on two opposite surfaces of the slide rail 1, so that the slide rail 1 is subjected to a more uniform force.

[0060] Furthermore, the first chute 102 and the second chute 103 are symmetrically arranged with respect to the slide rail 1, and the notch 1023 of the first chute 102 and the notch 1033 of the second chute 103 are arranged opposite each other, making the pressure exerted by the first pulley 202 and the second pulley 203 on the slide rail 1 more symmetrical. Accordingly, the pressure exerted by the slide rail 1 on the first pulley 202 and the second pulley 203 is also more symmetrical, thereby improving the stability of the sliding mechanism 10.

[0061] Optionally, the first sliding groove 102 and the second sliding groove 103 may also be arranged symmetrically about the center of the slide rail 1, so that the wheelbase of the first pulley 202 and the second pulley 203 is as large as possible, thereby improving the tightening effect.

[0062] In some preferred embodiments, when the first pulley 202 slides in the first chute 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 chute 102. When the second pulley 203 slides in the second chute 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 chute 103. In other words, the first pulley 202 has two surfaces abutting against the two surfaces of the first chute 102, and the second pulley 203 has two surfaces abutting against the two surfaces of the second chute 103. Please refer to Figure 6 , 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, thereby preventing the slider 201 from vibrating and moving unexpectedly.

[0063] As an example, please refer to Figure 2 The first direction is the Z-axis direction, the axial direction of the first pulley 202 and the second pulley 203 is the Y-axis direction, and the X-axis direction, Y-axis direction, and Z-axis direction are perpendicular to each other. Since two surfaces of the first pulley 202 abut against two surfaces of the first slide groove 102, and two surfaces of the second pulley 203 abut against 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, which is fixed to the first rotating shaft 204 of the first pulley 202 and the second rotating shaft 205 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 further prevent the slider 201 from vibrating or moving unexpectedly 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.

[0064] For further information, please refer to Figure 6 The first chute 102 has two first chute walls 1021. The two first chute walls 1021 are disposed opposite each other and are inclined. The first pulley 202 has two first inclined surfaces 2021. The two first inclined surfaces 2021 are disposed at both ends of the axial direction of the first pulley 202. The first inclined surfaces 2021 are disposed in a one-to-one correspondence with the first chute walls 1021.

[0065] Please refer to Figure 6The second chute 103 has two second chute walls 1031. The two second chute walls 1031 are disposed opposite each other and are inclined. The second pulley 203 has two second inclined surfaces 2031. The two second inclined surfaces 2031 are disposed at the axial ends of the second pulley 203. The second inclined surfaces 2031 are disposed in a one-to-one correspondence with the second chute walls 1031.

[0066] 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.

[0067] 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.

[0068] As an example, please refer to Figure 3 After the carriage 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 chute 102, and the first inclined surface 2021b of the first pulley 202 abuts against the first groove wall 1021b of the first chute 102. In other words, the two surfaces of the first pulley 202 abut against the two surfaces of the first chute 102, and the first chute 102 applies forces in two different directions to the first pulley 202, making the abutment 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. In other words, the two surfaces of the second pulley 203 abut against the two surfaces of the second chute 103, and the second chute 103 applies forces in two different directions to the second pulley 203, making the abutment more effective. Under the joint action of the first pulley 202 and the second pulley 203, the slider 201 can be effectively restricted so that the slider 201 cannot move in any direction relative to the slide rail 1 when it does not receive driving force, and the slider 201 can only move along the first direction relative to the slide rail 1 when it receives driving force.

[0069] Please refer to Figure 7The first pulley 202 has an outer circumferential surface 2022 and two side surfaces 2023. The side surfaces 2023 of the first pulley 202 are located at the axial ends of the outer circumferential surface 2022 of the first pulley 202. A first inclined surface 2021 is formed at the junction of the side surfaces 2023 of the first pulley 202 and the outer circumferential surface 2022 of the first pulley 202. In other words, the first inclined surface 2021 connects the side surfaces 2023 of the first pulley 202 and the outer circumferential surface 2022 of the first pulley 202. The first chute 102 also has a chute bottom 1022 connected between the two first chute walls 1021.

[0070] In a preferred embodiment, please refer to Figure 3 A gap exists between the outer circumferential surface 2022 of the first pulley 202 and the groove bottom 1022 of the first chute 102. In other words, the outer circumferential surface 2022 of the first pulley 202 does not contact the groove bottom 1022 of the first chute 102, allowing the first inclined surface 2021 to more effectively abut the first groove wall 1021. Since product dimensions cannot be absolutely precise during production, when a gap exists between the outer circumferential surface 2022 of the first pulley 202 and the groove bottom 1022 of the first chute 102, even if there are certain dimensional errors between the first pulley 202 and the slide rail 1, the first inclined surface 2021 can still effectively abut the first groove wall 1021. This prevents the outer circumferential surface 2022 of the first pulley 202 from abutting the groove bottom 1022 of the first chute 102, while preventing the first inclined surface 2021 of the first pulley 202 from abutting the first groove wall 1021 of the first chute 102. Similarly, there is a gap between the outer circumferential surface 2032 of the second pulley 203 and the groove bottom 1032 of the second chute 103. This fully ensures that the first inclined surface 2021 of the first pulley 202 can effectively abut against the first groove wall 1021 of the first chute 102, and at the same time, the second inclined surface 2031 of the second pulley 203 can effectively abut against the second groove wall 1031 of the second chute 103. When the slider 201 does not receive a driving force, the first pulley 202 and the second pulley 203 press against the slide rail 1, further preventing the slider 201 from moving relative to the slide rail 1; when the slider 201 receives a driving force, the first pulley 202 and the second pulley 203 slide relative to the slide rail 1 along with the slider 201 in the first direction.

[0071] Alternatively, refer to Figure 7 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. This makes the force applied to the slide rail 1 more uniform. Because the forces act on each other, 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 also more symmetrical. In other words, the pressure applied by the slide rail 1 to the carriage assembly 2 is also more symmetrical.

[0072] Optionally, the axis of the first pulley 202 and the axis of the second pulley 203 are arranged in parallel, please refer to Figure 7 That is, the axis of the first rotating shaft 204 and the axis of the second rotating shaft 205 are arranged in parallel. The axis of the first pulley 202 and the axis of the second pulley 203 are arranged in parallel, so that the force on the slide rail 1 is more evenly distributed. Moreover, 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.

[0073] Please refer to Figure 2 The carriage assembly 2 may further include a connecting frame 208. The connecting frame 208 is slidably mounted on the outside of the slide rail 1 and is fixedly connected to the slider 201. The first pulley 202 and the second pulley 203 are rotatably connected to the connecting frame 208. The connecting frame 208 encloses the first pulley 202 and the second pulley 203, effectively protecting the first pulley 202 and the second pulley 203 and extending the service life of the first pulley 202 and the second pulley 203.

[0074] Please refer to Figures 7 to 9 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.

[0075] The connecting frame 208 can also be configured as the output terminal of the sliding mechanism 10, thereby outputting the driving force received by the slider 201 to other mechanisms through the connecting frame 208. Configuring the connecting frame 208 as the output terminal of the sliding mechanism 10 provides a larger installation area and facilitates connection with other mechanisms. Furthermore, since the connecting frame 208 is not easily deformed, it further ensures that the sliding mechanism 10 can stably output the driving force to other mechanisms. Furthermore, the connecting frame 208 has multiple surfaces with different orientations, making it easier to assemble and connect with other mechanisms and providing greater flexibility.

[0076] As an example, the connection frame 208 can be connected and fixed to other mechanisms by screws. Alternatively, the connection frame 208 can also be fixed to other mechanisms by welding. Alternatively, the connection frame 208 can also be connected and fixed to other mechanisms by other methods, which are not limited here.

[0077] For further information, please refer to Figure 2 The 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.

[0078] Accordingly, to enable the slider 201 located within the slide rail 1 to drive the connecting frame 208 mounted on the outside of the slide rail 1 to slide, the slide assembly 2 further includes a connecting arm 206. The connecting arm 206 securely connects the slider 201 and the connecting frame 208 and extends through the clearance channel 104. When the slider 201 slides in a first direction within the slide channel 101 under the action of a driving force, the connecting arm 206 secured to the slider 201 also slides within the clearance channel 104, thereby driving the connecting frame 208 secured to the connecting arm 206 to slide in the first direction. The connecting arm 206 can better secure the connecting frame 208 and the slider 201, allowing the slide assembly 2 to be installed on the slide rail 1 more quickly and accurately.

[0079] As an example, in order to facilitate assembly and disassembly, the connecting frame 208 can be formed by splicing the first frame part 2081 and the second frame part 2082. Figure 4 and Figure 5 The first frame portion 2081 and the second frame portion 2082 may be detachably fixed to each other. For example, the first frame portion 2081 and the second frame portion 2082 may be fixed to each other by screws.

[0080] 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 .

[0081] It is understood that in other embodiments, the structure of the connecting frame 208 may also be other structures, as long as the connecting frame 208 can effectively connect the slider 201, the first pulley 202, and the second pulley 203, can fix the wheelbase of the first pulley 202 and the second pulley 203, and can output the driving force received by the slider 201 to other mechanisms.

[0082] There is at least one first pulley 202 and at least one second pulley 203. The number of first pulleys 202 and the number of second pulleys 203 can be the same. The number of first pulleys 202 and the number of second pulleys 203 can also be different.

[0083] As an example, the slide rail 1 may be an X-axis slide rail, or a Y-axis slide rail, or a Z-axis slide rail.

[0084] The 3D printer 1000 according to the embodiment of the present application may include the sliding mechanism 10 provided in any one of the above embodiments.

[0085] Alternatively, refer to Figure 10 and Figure 11The 3D printer 1000 may include two first sliding mechanisms 100. The two first sliding mechanisms 100 are spaced apart and symmetrically arranged. The 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. The first sliding mechanism 100 may be the sliding mechanism 10 provided in any of the above-mentioned embodiments. The second sliding mechanism 200 may 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 is further configured to drive the second sliding mechanism 200 and the nozzle mechanism 300 to move along the Z-axis. The second sliding mechanism 200 is configured to support the nozzle mechanism 300 and is further configured to drive the nozzle mechanism 300 to move along the X-axis.

[0086] 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-described embodiments. Therefore, the names and reference numerals of the components in the first sliding mechanism 100 and the second sliding mechanism 200 follow the names and reference numerals 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.

[0087] Since the nozzle mechanism 300 has a certain weight, when the nozzle mechanism 300 moves 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 this application are slidably abutted against the first slide groove 102 and the second slide groove 103 respectively. When the slider 201 does not receive a driving force, the first pulley 202 and the second pulley 203 are pressed against the slide rail 1 towards each other, which can further prevent the slider 201 from moving relative to the slide rail 1. When the slider 201 receives a driving force, the first pulley 202 and the second pulley 203 slide along the first direction relative to the slide rail 1 along with the slider 201. The first pulley 202 and the second pulley 203 apply opposing pressure to the slide rail 1, clamping it. Regardless of whether the slider 201 is receiving a driving force, the slider 201 will not vibrate or move unexpectedly, preventing the second sliding mechanism 200 from tilting or even falling. When the slider 201 is not receiving a driving force, the first pulley 202 and the second pulley 203 press against the slide rail 1, preventing the slider 201 from moving relative to the slide rail 1. In other words, when the slider 201 is not receiving a driving force, the nozzle mechanism 300 will not vibrate due to the first sliding mechanism 100. Furthermore, when the slider 201 is receiving a driving force, the slider 201 will only move in the first direction relative to the slide rail 1 under the action of the first pulley 202 and the second pulley 203. In other words, when the slider 201 is receiving a driving force, the nozzle mechanism 300 will not vibrate due to the first sliding mechanism 100. This prevents problems such as noticeable layering and poor surface gloss in the printed model, as well as printing failures, thereby improving product quality and printing accuracy.

[0088] 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.

[0089] Alternatively, refer to Figure 10 and Figure 11 The 3D printer may further include a third sliding mechanism 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.

[0090] 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 reference numerals of the components in the first sliding mechanism 100, the second sliding mechanism 200, and the third sliding mechanism follow the names and reference numerals 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.

[0091] 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 forming platform 500 during the XYZ three-axis movement can be avoided, further solving the problems of obvious layer lines and poor surface gloss during model forming and printing failure.

[0092] The technical features of the above embodiments can 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.

[0093] The above embodiments merely represent preferred embodiments of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A sliding mechanism, characterized in that: include: The slide rail extends along a first direction, and a first slide groove and a second slide groove are respectively formed on an outer surface of the slide rail and extend along the first direction; and The slide assembly includes a slider, and a first pulley and a second pulley rotatably connected to the slider; the slider is slidably connected to the slide rail; the first pulley and the second pulley are pressed against the slide rail, wherein the first pulley is slidably abutted against the first slide groove, and the second pulley is slidably abutted against the second slide groove; 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, wherein: The slide rail has a first surface and a second surface extending along a first direction, and the first surface and the second surface are arranged opposite to each other; The first slide groove is opened on the first surface, the second slide groove is opened on the second surface, the first slide groove and the second slide groove are symmetrically arranged with respect to the slide rail, and the notch of the first slide groove and the notch of the second slide groove are arranged opposite to each other.

3. The sliding mechanism according to claim 1, wherein: The first chute has two first groove walls that are arranged opposite to each other and inclined, and the first pulley has first inclined surfaces that are respectively arranged at two axial ends of the first pulley, and the first inclined surfaces are arranged in a one-to-one correspondence with the first groove walls; The second chute has two second groove walls that are arranged opposite to each other and inclined, and the second pulley has second inclined surfaces respectively arranged at two axial ends of the second pulley, and the second inclined surfaces are arranged in a one-to-one correspondence with the second groove walls; When the slider 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.

4. The sliding mechanism according to claim 3, wherein: The two first inclined surfaces of the first pulley are symmetrically arranged; The two second inclined surfaces of the second pulley are symmetrically arranged.

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

6. The sliding mechanism according to claim 5, wherein: The carriage assembly further includes a connecting frame; The connecting frame is slidably mounted on the outside of the slide rail and is fixedly connected to the slider; The first pulley and the second pulley are rotatably connected to the connecting frame respectively; The connecting frame is configured to fix the wheelbase between the first pulley and the second pulley; the connecting frame is also configured as the output end of the sliding mechanism.

7. The sliding mechanism according to claim 6, wherein: A sliding channel extending along a first direction is defined in the slide rail, and a yield channel extending along the first direction and communicating with the sliding channel is further defined on the slide rail; The slide assembly further comprises a connecting arm fixedly connecting the slider and the connecting frame, and the connecting arm is passed through the yield channel.

8. The sliding mechanism according to claim 1, wherein: When the slider does not receive the driving force, the first pulley and the second pulley press against the slide rail to prevent the slider from moving relative to the slide rail.

9. The sliding mechanism according to claim 1, wherein: 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.

10. A 3D printer, characterized in that include: A sliding mechanism according to any one of claims 1 to 9.

11. The 3D printer according to claim 10, wherein: The sliding mechanism includes a first sliding mechanism and / or a second sliding mechanism; The 3D printer includes two first sliding mechanisms that are spaced apart and symmetrically arranged; The 3D printer further includes a 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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