3D printer

Abstract

A 3D printer (1000), the 3D printer (1000) comprising a sliding mechanism (10). The sliding mechanism (10) comprises: a slide rail (1), extending in a first direction; and a sliding frame assembly (2), comprising a sliding block (201), and a first sliding wheel (202) and a second sliding wheel (203) which are separately and rotatably connected to the sliding block (201), the sliding block (201) being slidably connected to the inside of the slide rail (1), and the first sliding wheel (202) and the second sliding wheel (203) separately and slidably abutting against the slide rail (1). The sliding block (201) is configured to receive a driving force; and when the sliding block (201) receives a driving force, the first sliding wheel (202) and the second sliding wheel (203) slide together with the sliding block (201) in the first direction relative to the slide rail (1). Therefore, the 3D printer solves the problems of noticeable layer lines and poor surface gloss of printed models and the problem of model printing failure, improving product quality and printing accuracy.

Description

A 3D printer

[0001] The present application claims priority to the Chinese patent application No. 202411400031.6, filed on September 30, 2024, and entitled "A sliding mechanism and a 3D printer", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of 3D printing, and in particular, to a 3D printer. BACKGROUND

[0003] Fused Deposition Modeling (FDM) is a technology for building a 3D model by depositing a consumable in a molten state 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 a nozzle mechanism to slide along the X-axis. Alternatively, the sliding mechanism can also be configured as a Z-axis sliding mechanism that supports an X-axis sliding rail mechanism to slide along the Z-axis. Alternatively, the sliding mechanism can also be configured as a Y-axis sliding mechanism that supports a forming platform to slide along the Y-axis. If the sliding mechanism vibrates or moves unexpectedly during operation, it will cause the model formed by printing to have obvious layer lines and poor surface gloss, and even may cause the model printing to fail, which seriously affects the product quality. SUMMARY

[0004] Therefore, the present application provides a 3D printer, which includes a sliding mechanism, the sliding mechanism includes:

[0005] a sliding rail extending along a first direction; and

[0006] a sliding carriage assembly including a sliding block, and a first pulley and a second pulley rotatably connected to the sliding block respectively, the sliding block being slidably connected to the sliding rail, and the first pulley and the second pulley being slidably abutted to the sliding rail respectively;

[0007] wherein the sliding block is configured to receive a driving force;

[0008] when the sliding block receives the driving force, the first pulley and the second pulley slide along the first direction relative to the sliding rail with the sliding block.

[0009] In some embodiments, the axis of the first pulley and the axis of the second pulley are arranged in parallel.

[0010] In some embodiments, the slide rail is provided with a first sliding groove matched with the first pulley and a second sliding groove matched with the second pulley.

[0011] The first sliding groove and the second sliding groove are arranged in parallel.

[0012] In some embodiments, the first sliding groove and the second sliding groove are arranged in axial symmetry with respect to the slide rail; or, the first sliding groove and the second sliding groove are arranged in central symmetry with respect to the slide rail.

[0013] In some embodiments, the first sliding groove is provided with two first groove walls arranged oppositely and obliquely, the first pulley is provided with two first inclined surfaces arranged oppositely at two axial ends of the first pulley, and the first inclined surfaces are arranged in one-to-one correspondence with the first groove walls.

[0014] The second sliding groove is provided with two second groove walls arranged oppositely and obliquely, the second pulley is provided with two second inclined surfaces arranged oppositely at two axial ends of the second pulley, and the second inclined surfaces are arranged in one-to-one correspondence with the second groove walls.

[0015] 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.

[0016] In some embodiments, the two first inclined surfaces of the first pulley are arranged symmetrically.

[0017] The two second inclined surfaces of the second pulley are arranged symmetrically.

[0018] In some embodiments, the first pulley is further provided with a first outer circumferential surface arranged around the first pulley axis, the two first inclined surfaces are arranged at two axial ends of the first outer circumferential surface, and the first outer circumferential surface has a gap with the first sliding groove.

[0019] The second pulley is further provided with a second outer circumferential surface arranged around the second pulley axis, the two second inclined surfaces are arranged at two axial ends of the second outer circumferential surface, and the second outer circumferential surface has a gap with the second sliding groove.

[0020] In some embodiments, the first pulley and the second pulley abut against the slide rail oppositely.

[0021] In some embodiments, the outer surface of the slide rail comprises a first surface and a second surface arranged oppositely, and the first surface and the second surface extend in the first direction.

[0022] The slide rail further has a first sliding groove opened in the first surface and a second sliding groove opened in the second surface, the first sliding groove and the second sliding groove are symmetrically arranged with respect to the slide rail, and the opening of the first sliding groove and the opening of the second sliding groove are oppositely arranged;

[0023] The first pulley and the second pulley are arranged outside the slide rail, the first pulley is slidably abutted to the first sliding groove, and the second pulley is slidably abutted to the second sliding groove.

[0024] In some embodiments, the slide carriage assembly further comprises a connecting frame, the connecting frame is slidably sleeved outside the slide rail and fixedly connected with the sliding block;

[0025] The first pulley and the second pulley are respectively arranged outside the slide rail and are respectively rotatably connected to the connecting frame;

[0026] The connecting frame is configured to fix the shaft distance of the first pulley and the second pulley.

[0027] In some embodiments, the connecting frame is further configured as an output end of the sliding mechanism.

[0028] In some embodiments, the first pulley and the second pulley are oppositely abutted to the slide rail.

[0029] In some embodiments, the slide rail is internally opened with a sliding channel, and a first sliding groove and a second sliding groove respectively communicated with the sliding channel, the sliding channel, the first sliding groove and the second sliding groove respectively extend along the first direction;

[0030] The sliding block is slidably connected in the sliding channel, the first pulley and the second pulley are arranged in the slide rail, the first pulley is slidably abutted in the first sliding groove, and the second pulley is slidably abutted in the second sliding groove.

[0031] In some embodiments, the slide rail is further opened with a giving channel extending along the first direction and communicated with the sliding channel;

[0032] The slide carriage assembly further comprises a connecting arm and an output end portion, the output end portion is located outside the slide rail, the connecting arm is arranged in the giving channel and is fixedly connected with the sliding block and the output end portion respectively;

[0033] The output end portion is configured as an output end of the sliding mechanism.

[0034] In some embodiments, the connecting arm is connected to the sliding block near a side of the first pulley;

[0035] The first pulley is at least two, all of the first pulleys are arranged at intervals and are respectively rotatably connected to the sliding block, and all of the first pulleys are respectively slidably abutted in the first sliding groove.

[0036] In some embodiments, the first pulley and the second pulley are respectively arranged in the slide rail.

[0037] The sliding block is configured to fix the wheelbase of the first pulley and the second pulley.

[0038] In some embodiments, when the sliding block does not receive the driving force, the first pulley and the second pulley abut against the slide rail to prevent the sliding block from moving relative to the slide rail.

[0039] In some embodiments, the sliding block is configured to be connected with a lead screw transmission, and the lead screw is used to transmit the driving force to the sliding block.

[0040] In some embodiments, 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.

[0041] In some embodiments, the sliding mechanism includes a first sliding mechanism and / or a second sliding mechanism.

[0042] The 3D printer includes two first sliding mechanisms arranged at intervals and symmetrically.

[0043] The 3D printer further includes a second sliding mechanism connected to the two first sliding mechanisms and a nozzle mechanism connected to the second sliding mechanism.

[0044] 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.

[0045] 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.

[0046] Compared with the prior art, the beneficial features of the present application are that the 3D printer, the first pulley and the second pulley are respectively slidably abutted on the first sliding groove and the second sliding groove; when the sliding block receives a driving force, the driving force can overcome the pressure applied by the sliding rail on the first pulley and the second pulley, drive the sliding block to move, and thus drive the first pulley and the second pulley to slide along the first direction relative to the sliding rail together with the sliding block; in the above manner, the first pulley and the second pulley simultaneously apply pressure to the sliding rail and abut against the sliding rail, and whether the sliding block receives the driving force or not, the sliding block will not vibrate and move unexpectedly, solving the problems of obvious layer lines and poor surface gloss of the model formed by printing, and the problem of model printing failure, and improving the product quality and printing precision. BRIEF DESCRIPTION OF DRAWINGS

[0047] Fig. 1 is a schematic structural diagram of a sliding mechanism in a 3D printer according to an embodiment of the present application;

[0048] Fig. 2 is a schematic structural diagram of the sliding mechanism shown in Fig. 1;

[0049] Fig. 3 is a schematic structural diagram of the sliding mechanism shown in Fig. 1;

[0050] Fig. 4 is a schematic structural diagram of the A-A section of Fig. 3;

[0051] Fig. 5 is a left view of Fig. 3;

[0052] Fig. 6 is a schematic structural diagram of the sliding rail shown in Fig. 5;

[0053] Fig. 7 is a schematic structural diagram of the sliding carriage assembly shown in Fig. 5;

[0054] Fig. 8 is a schematic structural diagram of the sliding carriage assembly shown in Fig. 1;

[0055] Fig. 9 is a schematic structural diagram of the sliding carriage assembly shown in Fig. 1;

[0056] Fig. 10 is a schematic structural diagram of a sliding mechanism in a 3D printer according to an embodiment of the present application;

[0057] Fig. 11 is a schematic structural diagram of the sliding mechanism shown in Fig. 10;

[0058] Fig. 12 is a schematic structural diagram of the sliding mechanism shown in Fig. 10;

[0059] Fig. 13 is an exploded schematic structural diagram of part of the sliding mechanism shown in Fig. 10;

[0060] Fig. 14 is a schematic structural diagram of the sliding carriage assembly shown in Fig. 13;

[0061] Fig. 15 is an exploded schematic structural diagram of part of the sliding mechanism shown in Fig. 10;

[0062] Fig. 16 is a schematic structural diagram of the sliding carriage assembly shown in Fig. 15;

[0063] Fig. 17 is a schematic diagram of a partial structure of a carriage assembly in the sliding mechanism shown in Fig. 10;

[0064] Fig. 18 is a schematic diagram of a partial structure of the carriage assembly shown in Fig. 17;

[0065] Fig. 19 is a schematic diagram of a structure of a 3D printer according to an embodiment of the present application;

[0066] Fig. 20 is a schematic diagram of a structure of the 3D printer shown in Fig. 19;

[0067] In the drawings: 1000 - 3D printer (100 - first sliding mechanism, 200 - second sliding mechanism, 300 - nozzle mechanism, 500 - forming 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 - accommodation channel, 105 - first surface, 106 - second surface), 2 - carriage assembly (201 - slide block (2011 - screw rod mounting hole), 202 - first pulley (2021 - first inclined surface, 2021a - first inclined surface, 2021b - first inclined surface, 2022 - first outer peripheral surface, 2023 - first side surface), 203 - second pulley (2031 - second inclined surface, 2031a - second inclined surface, 2031b - second inclined surface, 2032 - second outer peripheral surface, 2033 - second side surface), 204 - first rotation shaft, 205 - second rotation shaft, 206 - connecting arm, 207 - output end portion, 208 - connecting frame (2081 - first frame portion, 2082 - second frame portion)). DETAILED DESCRIPTION

[0068] For the purpose of promoting an understanding of the application, the application will be described in greater detail below with reference to the drawings. The preferred embodiments of the application are shown in the drawings. However, the application can be realized in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

[0069] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0071] Referring to FIGS. 1-5 and 10-13, the 3D printer of the present embodiment includes a sliding mechanism 10, which includes a slide rail 1 and a slide carriage assembly 2. The slide rail 1 extends along a first direction. The slide carriage assembly 2 includes a slide block 201, a first pulley 202, and a second pulley 203. The slide block 201 is slidably connected in the slide rail 1. The first pulley 202 and the second pulley 203 are rotatably connected to the slide block 201, respectively, and the first pulley 202 and the second pulley 203 are slidably abutted to the slide rail 1, respectively.

[0072] The slide block 201 is configured to receive a driving force from outside the sliding mechanism 10.

[0073] When the slide block 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, under the action of the driving force, the slide block 201 can move along the first direction relative to the slide rail 1 to overcome the pressure applied by the slide rail 1 to the first pulley 202 and the second pulley 203, thereby driving the first pulley 202 and the second pulley 203 to slide along the first direction relative to the slide rail 1 together with the slide block 201.

[0074] Further, the first pulley 202 and the second pulley 203 can abut against the slide rail 1 in cooperation with each other, that is, even if the slide block 201 receives the driving force, the slide block 201 can only move along 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, the first direction is the up-down direction. When the preset direction is upward, that is, when the driving force drives the slide block 201 to move upward, the slide block 201 will not vibrate in the first direction because the first pulley 202 and the second pulley 203 always abut against the slide rail 1. Similarly, the slide block 201 will not vibrate in other directions because the first pulley 202 and the second pulley 203 always abut against the slide rail 1.

[0075] In the 3D printer of the embodiment 3, the first pulley 202 and the second pulley 203 are respectively slidably abutted against the first sliding groove 102 and the second sliding groove 103. When the sliding block 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, drive the sliding block 201 to move, and thus drive the first pulley 202 and the second pulley 203 to slide along the first direction relative to the slide rail 1 together with the sliding block 201. In the above manner, the first pulley 202 and the second pulley 203 simultaneously apply pressure to the slide rail 1 to abut against the slide rail 1. Regardless of whether the sliding block 201 receives the driving force, the sliding block 201 will not vibrate and move unexpectedly, thus solving the problems of obvious layer lines and poor surface gloss of the model formed by printing and the problem of model printing failure, and improving the product quality and printing precision.

[0076] Optionally, when the sliding block 201 does not receive the driving force, the first pulley 202 and the second pulley 203 abut against the slide rail 1 in cooperation, which can further avoid the movement of the sliding block 201 relative to the slide rail 1. It can be understood that, since the force is mutual, when the first pulley 202 and the second pulley 203 abut against the slide rail 1 in cooperation, the slide rail 1 will also abut against the first pulley 202 and the second pulley 203, thereby preventing 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 sliding block 201, the movement of the sliding block 201 relative to the slide rail 1 when the sliding block 201 does not receive the driving force is further avoided, and the stability of the overall structure is improved.

[0077] Optionally, referring to FIGS. 4 and 5, the first pulley 202 and the second pulley 203 can abut against the slide rail 1 in opposite directions. As an example, when the first pulley 202 and the second pulley 203 abut against the slide rail 1 in opposite directions, the first pulley 202 and the second pulley 203 can simultaneously apply opposite pressure to the slide rail 1 to abut against the slide rail 1.

[0078] Alternatively, referring to FIGS. 12 and 15, the first pulley 202 and the second pulley 203 can abut against the slide rail 1 in the same direction. As an example, when the first pulley 202 and the second pulley 203 abut against the slide rail 1 in the same direction, the first pulley 202 and the second pulley 203 can simultaneously apply pressure in the same direction to the slide rail 1 to abut against the slide rail 1.

[0079] Optionally, the driving force can come from a lead screw, and the sliding block 201 is in transmission connection with the lead screw. When the lead screw rotates, the lead screw drives the sliding block 201 in transmission connection with the lead screw to move along the length direction of the lead screw.

[0080] As an example, referring to FIGS. 2 and 12, the middle part of the sliding block 201 can be provided with a lead screw mounting hole 2011 matched with the lead screw.

[0081] It can be understood that in other embodiments, the driving force can also come from other driving devices, which are not described here.

[0082] Optionally, the sliding carriage assembly 2 can further comprise a first rotating shaft 204 and a second rotating shaft 205. The first rotating shaft 204 and the second rotating shaft 205 are fixedly connected to the sliding block 201 respectively. The first pulley 202 is connected to the corresponding 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 corresponding 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.

[0083] Optionally, the axis of the first pulley 202 and the axis of the second pulley 203 are arranged in parallel, please refer to FIG. 16. That is, the axis of the first rotating shaft 204 and the axis of the second rotating shaft 205 are arranged in parallel. The parallel arrangement of the axis of the first pulley 202 and the axis of the second pulley 203 makes the force on the slide rail 1 more uniform, and the same direction rotation of the first pulley 202 and the second pulley 203 makes it more convenient for the sliding carriage assembly 2 to move along the slide rail 1.

[0084] Please refer to FIG. 2 and FIG. 11, the slide rail 1 can be provided with a first sliding groove 102 and a second sliding groove 103, and the first sliding groove 102 cooperates with the first pulley 202. The first pulley 202 is slidably abutted in the first sliding groove 102. The second sliding groove 103 cooperates with the second pulley 203. The second pulley 203 is slidably abutted in the second sliding groove 103. The first sliding groove 102 and the second sliding groove 103 are arranged in parallel, and both the first sliding groove 102 and the second sliding groove 103 extend in the first direction, so that the first pulley 202 cooperating with the first sliding groove 102 and the second pulley 203 cooperating with the second sliding groove 103 can slide in the first direction.

[0085] Optionally, the first sliding groove 102 and the second sliding groove 103 can be arranged inside the slide rail 1. Referring to FIG. 2, the slide rail 1 is internally provided with a sliding channel 101, the first sliding groove 102 and the second sliding groove 103. The sliding block 201 is slidably connected in the sliding channel 101. The first sliding groove 102 and the second sliding groove 103 are respectively communicated with the sliding channel 101. The sliding channel 101, the first sliding groove 102 and the second sliding groove 103 respectively extend along the first direction. That is, the sliding block 201, the first pulley 202 and the second pulley 203 are all arranged 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, thereby prolonging the service life of the first pulley 202 and the second pulley 203. In addition, the first sliding groove 102 and the second sliding groove 103 are arranged inside the slide rail 1, which can effectively protect the first sliding groove 102 and the second sliding groove 103, thereby avoiding foreign matters from falling into the first sliding groove 102 and the second sliding groove 103 to affect the first pulley 202 and the second pulley 203, and avoiding the first sliding groove 102 and the second sliding groove 103 from being scratched from the outside, thereby further prolonging the service life of the sliding mechanism 10 and the cooperation precision of the slide carriage assembly 2 and the slide rail 1.

[0086] Optionally, referring to FIG. 11, the first sliding groove 102 and the second sliding groove 103 can be arranged outside the slide rail 1, which not only can reduce the influence on the strength of the slide rail 1 as much as possible, but also is convenient for processing. That is, the first pulley 202 and the second pulley 203 can be arranged outside the slide rail 1.

[0087] In some preferred embodiments, referring to FIG. 15, the first sliding groove 102 and the second sliding groove 103 can be arranged in axial symmetry with respect to the slide rail 1, which is simpler in structure and is more convenient for production, manufacturing and installation.

[0088] For example, referring to FIG. 13, the slide rail 1 can have a first surface 105 and a second surface 106 extending along the first direction, and the first surface 105 and the second surface 106 are oppositely arranged. The first sliding groove 102 is arranged on the first surface 105, and the second sliding groove 103 is arranged on the second surface 106. That is, the slot 1023 of the first sliding groove 102 and the slot 1033 of the second sliding groove 103 are oppositely arranged, so that the pressure applied by the first pulley 202 and the second pulley 203 to the slide rail 1 is more symmetrical. The first sliding groove 102 and the second sliding groove 103 are arranged in symmetry with respect to the slide rail 1, which not only is simple in structure and convenient for production, but also makes the pressure applied by the first pulley 202 and the second pulley 203 to the slide rail 1 more symmetrical. Accordingly, the pressure applied by the slide rail 1 to the first pulley 202 and the second pulley 203 is also more symmetrical, thereby improving the stability of the sliding mechanism 10.

[0089] In some preferred embodiments, referring to FIG. 6, the first sliding groove 102 and the second sliding groove 103 are arranged symmetrically about the center of the slide rail 1, and the distance between the first sliding groove 102 and the second sliding groove 103 can be increased as much as possible, so as to increase the wheelbase between the first pulley 202 and the second pulley 203 as much as possible, and to sufficiently ensure the abutting effect.

[0090] For example, referring to FIG. 6, the cross section of the slide rail 1 can be square. The first sliding groove 102 and the second sliding groove 103 are arranged near the two ends of a diagonal line of the cross section of the slide rail 1, respectively, so as to increase the wheelbase of the first pulley 202 and the second pulley 203 as much as possible, and to sufficiently ensure the abutting effect.

[0091] In some preferred embodiments, when the first pulley 202 slides in the first sliding groove 102, the first pulley 202 rotates about the axis of the first pulley 202. The two sides of the first pulley 202 in the axial direction abut against the two groove walls of the first sliding groove 102, respectively. When the second pulley 203 slides in the second sliding groove 103, the second pulley 203 rotates about the axis of the second pulley 203. The two sides of the second pulley 203 in the axial direction abut against the two groove walls of the second sliding groove 103, respectively. That is, the first pulley 202 has two surfaces abutting against the two surfaces of the first sliding groove 102, and the second pulley 203 has two surfaces abutting against the two surfaces of the second sliding groove 103, which further ensures the tightness of the cooperation between the first pulley 202 and the first sliding groove 102, and the tightness of the cooperation between the second pulley 203 and the second sliding groove 103, and further avoids the vibration and accidental movement of the sliding block 201.

[0092] For example, referring to FIG. 2 and FIG. 11, the first direction can 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 abutting against the two surfaces of the first sliding groove 102, and the second pulley 203 has two surfaces abutting against the two surfaces of the second sliding groove 103, the first pulley 202 and the second pulley 203 are further prevented from moving along the X-axis direction and the Y-axis direction relative to the slide rail 1. 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 sliding block 201, so as to avoid the sliding block 201 fixed with the first shaft 204 of the first pulley 202 and the second shaft 205 of the second pulley 203 from moving along the X-axis direction and the Y-axis direction relative to the slide rail 1. Moreover, since the first pulley 202 and the second pulley 203 abut against the slide rail 1 in cooperation, the pressure applied by the slide rail 1 to the first pulley 202 and the second pulley 203 when the sliding block 201 does not receive the driving force can prevent the sliding block 201 from vibrating or accidentally moving during the working process, thereby solving the problems of obvious layer lines and poor surface gloss of the model formed by printing, and the problem of model printing failure, and improving the product quality and the printing precision.

[0093] Further, referring to FIGS. 6-9 and 14-15, the first sliding groove 102 can have two first groove walls 1021. The two first groove walls 1021 are oppositely arranged and obliquely arranged. The first pulley 202 has two first inclined surfaces 2021. The two first inclined surfaces 2021 are arranged at two axial ends of the first pulley 202. The first inclined surfaces 2021 are arranged one by one corresponding to the first groove walls 1021.

[0094] Referring to FIGS. 6-9 and 14-15, the second sliding groove 103 can have two second groove walls 1031. The two second groove walls 1031 are oppositely arranged and obliquely arranged. The second pulley 203 has two second inclined surfaces 2031. The two second inclined surfaces 2031 are arranged at two axial ends of the second pulley 203. The second inclined surfaces 2031 are arranged one by one corresponding to the second groove walls 1031.

[0095] When the slider 201 does not receive the driving force, the first inclined surfaces 2021 and the second inclined surfaces 2031 abut against the corresponding first groove walls 1021 and the second groove walls 1031, thereby further avoiding the movement of the slider 201 relative to the slide rail 1 in any direction when the slider 201 does not receive the driving force.

[0096] When the slider 201 receives the driving force, the first inclined surfaces 2021 and the second inclined surfaces 2031 slide against the corresponding first groove walls 1021 and the second groove walls 1031, thereby enabling the slider 201 to move relative to the slide rail 1 in the first direction under the driving of the driving force.

[0097] As an example, please refer to FIG. 5 and FIG. 12, after the connection of the sliding carriage assembly 2 and the sliding rail 1, the first inclined surface 2021a of the first pulley 202 abuts against the first groove wall 1021a of the first sliding groove 102, and the first inclined surface 2021b of the first pulley 202 abuts against the first groove wall 1021b of the first sliding groove 102, that is, the two first inclined surfaces 2021 of the first pulley 202 abut against the two first groove walls 1021 of the first sliding groove 102, and the first sliding groove 102 applies two forces in different directions to the first pulley 202, which is more effective in abutment. Similarly, the second inclined surface 2031a of the second pulley 203 abuts against the second groove wall 1031a of the second sliding groove 103, and the second inclined surface 2031b of the second pulley 203 abuts against the second groove wall 1031b of the second sliding groove 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 sliding groove 103, and the second sliding groove 103 applies two forces in different directions to the second pulley 203, which is more effective in abutment. Under the joint action of the first pulley 202 and the second pulley 203 and the sliding rail 1, the sliding block 201 can be effectively limited, so that the sliding block 201 cannot move in any direction relative to the sliding rail 1 when no driving force is received, and the sliding block 201 can only move relative to the sliding rail 1 in the first direction when a driving force is received.

[0098] Please refer to FIG. 7 and FIG. 15, the first pulley 202 has a first outer circumferential surface 2022 and two first side surfaces 2023, the first outer circumferential surface 2022 is arranged around the axis of the first pulley 202, and the two first side surfaces 2023 of the first pulley 202 are respectively arranged at the axial ends of the first outer circumferential surface 2022 of the first pulley 202. The first inclined surface 2021 is arranged at the connection between the first side surface 2023 of the first pulley 202 and the first outer circumferential surface 2022 of the first pulley 202. That is, the first inclined surface 2021 connects the first side surface 2023 of the first pulley 202 and the first outer circumferential surface 2022 of the first pulley 202. The first sliding groove 102 also has a groove bottom 1022 connected between the two first groove walls 1021.

[0099] In a preferred embodiment, referring to FIG. 4 and FIG. 15, the first outer circumferential surface 2022 of the first pulley 202 has a gap with the groove bottom 1022 of the first sliding groove 102. That is, the first outer circumferential surface 2022 of the first pulley 202 does not contact the groove bottom 1022 of the first sliding groove 102, so that the first inclined surface 2021 can more effectively abut against the first groove wall 1021. Since the product size cannot be absolutely accurate during production, when the first outer circumferential surface 2022 of the first pulley 202 has a gap with the groove bottom 1022 of the first sliding groove 102, even if the product size of the first pulley 202 and the sliding rail 1 has a certain error, it can be ensured that the first inclined surface 2021 effectively abuts against the first groove wall 1021. Avoiding the first outer circumferential surface 2022 of the first pulley 202 abutting against the groove bottom 1022 of the first sliding groove 102, while the first inclined surface 2021 of the first pulley 202 cannot abut against the first groove wall 1021 of the first sliding groove 102. Similarly, the second outer circumferential surface 2032 of the second pulley 203 also has a gap with the groove bottom 1032 of the second sliding groove 103, so that the first inclined surface 2021 of the first pulley 202 can be effectively abutted against the first groove wall 1021 of the first sliding groove 102, and the second inclined surface 2031 of the second pulley 203 can be effectively abutted against the second groove wall 1031 of the second sliding groove 103, so as to achieve the purpose that when the sliding block 201 does not receive driving force, the first pulley 202 and the second pulley 203 abut against the sliding rail 1 to further avoid the sliding block 201 relative to the sliding rail 1; when the sliding block 201 receives driving force, the first pulley 202 and the second pulley 203 slide together with the sliding block 201 relative to the sliding rail 1 in the first direction.

[0100] Optionally, referring to FIG. 7 and FIG. 15, the two first inclined surfaces 2021 of the first pulley 202 are symmetrically arranged, and the two second inclined surfaces 2031 of the second pulley 203 are symmetrically arranged, so that the sliding rail 1 is more uniformly stressed. Since the force is mutual, the pressure applied by the sliding rail 1 to the first pulley 202 is more symmetrical. Similarly, the pressure applied by the sliding rail 1 to the second pulley 203 is more symmetrical. That is, the pressure applied by the sliding rail 1 to the sliding rail assembly 2 is more symmetrical.

[0101] In some preferred embodiments, referring to FIG. 10, the slide carriage assembly 2 can further comprise a connecting frame 208. The connecting frame 208 is sleeved on the slide rail 1 and is fixedly connected with the slide block 201. The first pulley 202 and the second pulley 203 are respectively arranged outside the slide rail 1 and are rotatably connected in the connecting frame 208. The connecting frame 208 can effectively protect the first pulley 202 and the second pulley 203 and prolong the service life of the first pulley 202 and the second pulley 203. The connecting frame 208 is configured to fix the wheelbase of the first pulley 202 and the second pulley 203.

[0102] Referring to FIG. 17, the connecting frame 208 can be configured to fix the wheelbase of the first pulley 202 and the second pulley 203. The frame structure is more stable and less likely to deform than the single-arm structure, and can more firmly fix the wheelbase of the first pulley 202 and the second pulley 203.

[0103] For example, referring 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.

[0104] The connecting frame 208 can also be configured as the output end of the sliding mechanism 10, so that the driving force received by the slide block 201 is output to other mechanisms through the connecting frame 208. The connecting frame 208 has a larger installation area and is more convenient to connect with other mechanisms. In addition, the connecting frame 208 is less likely to deform, which can further ensure that the sliding mechanism 10 can stably output the driving force to other mechanisms. In addition, the connecting frame 208 has multiple surfaces with different orientations, which is more convenient to assemble and connect with other mechanisms and is more flexible to use.

[0105] For example, the connecting frame 208 can be fixedly connected with other mechanisms by screws. Alternatively, the connecting frame 208 can be fixedly connected with other mechanisms by welding. Alternatively, the connecting frame 208 can be fixedly connected with other mechanisms by other means, which are not limited herein.

[0106] Further, referring to FIG. 12, in order to effectively connect and fix the slide block 201 inside the slide rail 1 and the connecting frame 208 sleeved outside the slide rail 1, the slide carriage assembly 2 can further comprise a connecting arm 206.

[0107] Please refer to Figure 13, the sliding channel 101 can also be provided in the slide rail 1. The sliding channel 101 extends along the first direction. The sliding block 201 is slidably connected in the sliding channel 101. The let-pass channel 104 is also provided in the slide rail 1. The let-pass channel 104 extends along the first direction and communicates with the sliding channel 101.

[0108] Please refer to Figure 13, the connecting arm 206 fixedly connects the sliding block 201 and the connecting frame 208, and the connecting arm 206 is provided in the let-pass channel 104. When the sliding block 201 slides in the sliding channel 101 along the first direction under the action of the received driving force, the connecting arm 206 fixedly connected with the sliding block 201 also slides in the let-pass channel 104, thereby driving the connecting frame 208 fixedly connected with the connecting arm 206 to slide along the first direction. The connecting arm 206 can better fixedly connect the connecting frame 208 and the sliding block 201, so that the slide assembly 2 can be more quickly and accurately installed on the slide rail 1.

[0109] As an example, the connecting frame 208 can be spliced by the first frame part 2081 and the second frame part 2082, which is more convenient for disassembly, please refer to Figure 13. The first frame part 2081 and the second frame part 2082 can be detachably fixed. For example, the first frame part 2081 and the second frame part 2082 can be fixed by screws.

[0110] Optionally, please refer to Figure 14, the sliding block 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 part 2081, which can ensure the stability of the slide assembly.

[0111] In other preferred embodiments, please refer to Figure 2, the first pulley 202 and the second pulley 203 are respectively provided in the slide rail 1. The sliding block 201 is configured to fix the axle distance of the first pulley 202 and the second pulley 203. That is, the first rotating shaft 204 and the second rotating shaft 205 are directly fixedly connected to the sliding block 201, which facilitates more compact and effective connection of the first pulley 202 and the second pulley 203, thereby more firmly fixing the axle distance of the first pulley 202 and the second pulley 203.

[0112] Optionally, in the above-mentioned embodiments, in order to facilitate the output of the driving force received by the sliding block 201 to the outside of the slide rail 1, the slide assembly 2 further comprises a connecting arm 206 and an output end part 207. The let-pass channel 104 can also be provided in the slide rail 1. The let-pass channel 104 extends along the first direction and communicates with the sliding channel 101. The output end part 207 is located outside the slide rail 1. The connecting arm 206 is provided in the let-pass channel 104 and is fixedly connected with the sliding block 201 and the output end part 207 respectively, thereby outputting the driving force received by the sliding block 201 to the outside of the slide rail 1 through the output end part 207.

[0113] Optionally, the output end portion 207 is configured as an output end of the sliding mechanism 10, so as to output the driving force received by the slider 201 to other mechanisms through the output end portion 207.

[0114] It can be understood that the first pulley 202 is at least one, and the second pulley 203 is at least one. The number of the first pulley 202 and the number of the second pulley 203 can be the same, or the number of the first pulley 202 and the number of the second pulley 203 can also be different.

[0115] In one example, referring to FIGS. 7-9, the connecting arm 206 is connected to the side of the slider 201 close to the first pulley 202. The first pulley 202 is at least two, all the first pulleys 202 are arranged at intervals, and all the first pulleys 202 are respectively rotatably connected to the slider 201, and all the first pulleys 202 are respectively slidably abutted in the first sliding groove 102, so that the pressure applied by the slide rail 1 to the sliding assembly 2 is closer to the connecting arm 206, further improving the stability of the sliding mechanism 10.

[0116] As an example, the slide rail 1 can be an X-axis slide rail. Alternatively, the slide rail 1 can be a Y-axis slide rail. Alternatively, the slide rail 1 can be a Z-axis slide rail.

[0117] In some embodiments, referring to FIGS. 19 and 20, the 3D printer 1000 can include two first sliding mechanisms 100. The two first sliding mechanisms 100 are arranged at intervals and symmetrically. The 3D printer 1000 can 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 embodiments. The second sliding mechanism 200 can also be the sliding mechanism 10 provided in any of the above 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.

[0118] In one example, the first sliding mechanism 100 and the second sliding mechanism 200 are the sliding mechanism 10 provided by any of the above embodiments. Therefore, the names and labels of the components in the first sliding mechanism 100 and the second sliding mechanism 200 are the same as those of the components in the sliding mechanism 10. The first sliding mechanism 100 and the second sliding mechanism 200 can have the same structure or different structures. 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 the two 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.

[0119] 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 that borne by the other first sliding mechanism 100. If the first sliding mechanism 100 cannot effectively support the nozzle mechanism 300, the slide rail 1 of the second sliding mechanism 200 will tilt or even drop, causing the nozzle mechanism 300 to tilt or even drop, which seriously affects the printing of the model. In the present application, the first pulley 202 and the second pulley 203 of the first sliding mechanism 100 are respectively slidably abutted against the first sliding groove 102 and the second sliding groove 103. When the sliding block 201 does not receive driving force, the first pulley 202 and the second pulley 203 abut against the slide rail 1 in cooperation, which can further prevent the sliding block 201 from moving relative to the slide rail 1. When the sliding block 201 receives driving force, the first pulley 202 and the second pulley 203 slide relative to the slide rail 1 in the first direction together with the sliding block 201. The first pulley 202 and the second pulley 203 apply opposite or opposite pressure to the slide rail 1 to clamp the slide rail 1. Whether the sliding block 201 receives driving force or not, the sliding block 201 will not vibrate or move unexpectedly, avoiding the tilting or even dropping of the second sliding mechanism 200. When the sliding block 201 does not receive driving force, the first pulley 202 and the second pulley 203 abut against the slide rail 1 in cooperation, so that the sliding block 201 cannot move relative to the slide rail 1. That is, when the sliding block 201 does not receive 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 sliding block 201 receives driving force, the sliding block 201 will only move relative to the slide rail 1 in the first direction. That is, when the sliding block 201 receives driving force, the nozzle mechanism 300 will not vibrate due to the first sliding mechanism 100, avoiding the problems of obvious layer lines and poor surface gloss of the printed model, and the problem of model printing failure, improving the product quality and printing precision.

[0120] It can be understood that in other embodiments, the second sliding mechanism 200 can also be different from the structure of the sliding mechanism 10, and the second sliding mechanism 200 can also be other sliding mechanisms.

[0121] Optionally, referring to FIGS. 19 and 20, the 3D printer 1000 can further include a third sliding mechanism (not shown in the figures) and a forming platform 500 connected to the third sliding mechanism. The third sliding mechanism can 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.

[0122] For example, the third sliding mechanism can be the sliding mechanism 10 shown in FIGS. 10 to 18, and the connecting frame 208 serves as an output end, which is more convenient for mounting the forming platform 500 and the connection is more stable after assembly.

[0123] In one example, the first sliding mechanism 100, the second sliding mechanism 200, and the third sliding mechanism are the sliding mechanism 10 provided in any of the above embodiments. Therefore, the names and labels of the components in the first sliding mechanism 100, the second sliding mechanism 200, and the third sliding mechanism follow the names and labels 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 can 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 the two 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 forming platform 500 is fixed to the output end of the third sliding mechanism.

[0124] Under the action of the first sliding mechanism 100, the second sliding mechanism 200, and the third sliding mechanism, the nozzle mechanism 300 and the forming platform 500 can be prevented from vibrating or moving unexpectedly during XYZ three-axis movement, further solving the problems of obvious layer lines and poor surface gloss during model forming and the problem of printing failure.

[0125] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present disclosure.

[0126] The above embodiments only express the preferred embodiments of the present application, which are described in a more specific and detailed manner, but should not be construed as limiting the scope of the patent application. It should be noted that for ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, which are all within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application should be subject to the appended claims.

Claims

1. A 3D printer, characterized by, The 3D printer comprises a sliding mechanism, the sliding mechanism comprises: a sliding rail extending along a first direction; and a sliding carriage assembly comprising a sliding block, and a first pulley and a second pulley rotatably connected to the sliding block respectively, the sliding block being slidably connected to the sliding rail, the first pulley and the second pulley being slidably abutted to the sliding rail respectively; wherein the sliding block is configured to receive a driving force; when the sliding block receives the driving force, the first pulley and the second pulley slide along the first direction relative to the sliding rail with the sliding block.

2. The 3D printer of claim 1, wherein, the axis of the first pulley and the axis of the second pulley are arranged in parallel.

3. The 3D printer of claim 1, wherein, the sliding rail is provided with a first sliding groove matched with the first pulley and a second sliding groove matched with the second pulley; the first sliding groove and the second sliding groove are arranged in parallel.

4. The 3D printer of claim 3, wherein, the first sliding groove and the second sliding groove are arranged in axial symmetry about the sliding rail; or, the first sliding groove and the second sliding groove are arranged in central symmetry about the sliding rail.

5. The 3D printer of claim 3, wherein, the first sliding groove has two first groove walls arranged oppositely and obliquely, the first pulley has two first inclined surfaces arranged at the two axial ends of the first pulley respectively, and the first inclined surfaces are arranged one by one corresponding to the first groove walls; the second sliding groove has two second groove walls arranged oppositely and obliquely, the second pulley has two second inclined surfaces arranged at the two axial ends of the second pulley respectively, and the second inclined surfaces are arranged one by one corresponding to the second groove walls; when the sliding block receives the driving force, the first inclined surfaces slide and abut to the corresponding first groove walls, and the second inclined surfaces slide and abut to the corresponding second groove walls.

6. The 3D printer of claim 5, wherein, the two first inclined surfaces of the first pulley are arranged symmetrically; the two second inclined surfaces of the second pulley are arranged symmetrically.

7. The 3D printer of claim 5, wherein, the first pulley further has a first outer circumferential surface arranged around the axis of the first pulley, the two first inclined surfaces are arranged at the two axial ends of the first outer circumferential surface respectively, and the first outer circumferential surface has a gap with the first sliding groove; the second pulley further has a second outer circumferential surface arranged around the axis of the second pulley, the two second inclined surfaces are arranged at the two axial ends of the second outer circumferential surface respectively, and the second outer circumferential surface has a gap with the second sliding groove.

8. The 3D printer of claim 1, wherein, the first pulley and the second pulley abut against the sliding rail oppositely.

9. The 3D printer of claim 8, wherein, the outer surface of the sliding rail comprises a first surface and a second surface arranged oppositely, the first surface and the second surface extending along the first direction; the sliding rail further has a first sliding groove opened in the first surface and a second sliding groove opened in the second surface, the first sliding groove and the second sliding groove are arranged symmetrically about the sliding rail, and the slot of the first sliding groove and the slot of the second sliding groove are arranged oppositely; the first pulley and the second pulley are arranged outside the sliding rail, the first pulley is slidably abutted to the first sliding groove, and the second pulley is slidably abutted to the second sliding groove.

10. The 3D printer of claim 1, wherein, the sliding carriage assembly further comprises a connecting frame slidably sleeved outside the sliding rail and fixedly connected with the sliding block; the first pulley and the second pulley are arranged outside the sliding rail respectively and rotatably connected to the connecting frame respectively. The connecting frame is configured to fix the axle distance of the first pulley and the second pulley.

11. The 3D printer of claim 10, wherein, The connecting frame is also configured as an output end of the sliding mechanism.

12. The 3D printer of claim 1, wherein, The first pulley and the second pulley abut against the slide rail in opposite directions.

13. The 3D printer of claim 12, wherein, The slide rail is internally provided with a sliding channel, and a first sliding groove and a second sliding groove in communication with the sliding channel, respectively, the sliding channel, the first sliding groove and the second sliding groove extending along the first direction, respectively. The sliding block is slidably connected in the sliding channel, the first pulley and the second pulley are arranged in the slide rail, the first pulley is slidably abutted in the first sliding groove, and the second pulley is slidably abutted in the second sliding groove.

14. The 3D printer of claim 13, wherein, The slide rail is further provided with a clearance channel extending along the first direction and in communication with the sliding channel. The slide rail assembly further comprises a connecting arm and an output end, the output end is located outside the slide rail, the connecting arm is arranged in the clearance channel and is fixedly connected with the sliding block and the output end, respectively. The output end is configured as an output end of the sliding mechanism.

15. The 3D printer of claim 14, wherein, The connecting arm is connected to the side of the sliding block close to the first pulley. The first pulley has at least two, all the first pulleys are arranged at intervals and are rotatably connected to the sliding block, and all the first pulleys are slidably abutted in the first sliding groove, respectively.

16. The 3D printer of claim 1, wherein, The first pulley and the second pulley are arranged in the slide rail, respectively. The sliding block is configured to fix the axle distance of the first pulley and the second pulley.

17. The 3D printer of claim 1, wherein, When the sliding block does not receive the driving force, the first pulley and the second pulley abut against the slide rail in cooperation to prevent the sliding block from moving relative to the slide rail.

18. The 3D printer of claim 1, wherein, The sliding block is configured to be connected with a lead screw transmission, and the lead screw is used to transmit the driving force to the sliding block.

19. The 3D printer of 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.

20. The 3D printer of claim 1, wherein, The sliding mechanism comprises a first sliding mechanism and / or a second sliding mechanism. The 3D printer comprises two first sliding mechanisms arranged at intervals and symmetrically. The 3D printer further comprises a second sliding mechanism and a nozzle mechanism, 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 also 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 also configured to drive the nozzle mechanism to move along the X-axis direction.

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