Sliding mechanism and 3D printer

Abstract

The utility model relates to a sliding mechanism and a 3D printer, the sliding mechanism comprises a sliding rail, the sliding rail is internally provided with a sliding channel, a first sliding groove and a second sliding groove, the first sliding groove and the second sliding groove communicate with the sliding channel, and the sliding channel, the first sliding groove and the second sliding groove 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 in the sliding channel in a sliding manner; the first pulley and the second pulley abut against the sliding rail in a back-to-back mode, the first pulley abuts against the interior of the first sliding groove in a sliding mode, and the second pulley abuts against the interior of the second sliding groove in a sliding mode. The sliding block is configured to receive driving force from the outside of the sliding mechanism; when the sliding block receives driving force, the first pulley and the second pulley slide along with the sliding block relative to the sliding rail in the first direction. The product quality and the printing precision are improved, the service life of the sliding mechanism is prolonged, and the matching precision of the sliding frame assembly and the sliding rail is 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, comprising:

[0004] A slide rail having a sliding channel, and a first slide groove and a second slide groove respectively connected to the sliding channel, wherein the sliding channel, the first slide groove and the second slide groove respectively extend along a 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 sliding channel; the first pulley and the second pulley are opposed to each other and pressed against the slide rail, wherein the first pulley is slidably abutted in the first slide groove, and the second pulley is slidably abutted in 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 axis of the first pulley and the axis of the second pulley are arranged in parallel;

[0009] The slider is configured to fix a wheelbase between the first pulley and the second pulley.

[0010] Furthermore, the cross section of the slide rail is square;

[0011] The first chute and the second chute are respectively arranged close to two ends of a diagonal line of the cross section of the slide rail, and the bottom of the first chute and the bottom of the second chute are arranged facing each other.

[0012] 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;

[0013] 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;

[0014] 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.

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

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

[0017] Furthermore, the slide rail is provided with a yield channel extending along the first direction and communicating with the slide channel;

[0018] The sliding mechanism further includes a connecting arm and an output end portion, wherein the output end portion is located outside the slide rail, and the connecting arm is arranged in the yield channel and is fixedly connected to the slider and the output end portion respectively;

[0019] The output end portion is configured as an output end of the sliding mechanism.

[0020] Furthermore, the connecting arm is connected to a side of the slider close to the first pulley;

[0021] There are at least two first pulleys, all of which are spaced apart and rotatably connected to the sliders, and all of which are slidably abutted against the first sliding grooves.

[0022] Furthermore, when the slider does not receive the driving force, the first pulley and the second pulley press against the slide rail in opposite directions 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 as follows: 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 relative to the slide rail along the first direction with the slider; through the above method, the first pulley and the second pulley apply back and forth pressure to the slide rail to press the slide rail tightly, regardless of whether the slider receives a driving force, the slider will not vibrate or move unexpectedly, solving the problems of obvious layer patterns and poor surface gloss in the printed model and model printing failure. The problem of failure is solved, and the product quality and printing accuracy are improved; moreover, the slider, the first pulley and the second pulley are all installed inside the slide rail, which not only has a more compact structure and effectively reduces the volume of the sliding mechanism, but also can effectively protect the first pulley and the second pulley, and improve the service life of the first pulley and the second pulley; moreover, the first slide groove and the second slide groove are opened inside the slide rail, which can effectively protect the first slide groove and the second slide groove, and can not only prevent foreign matter from falling into the first slide groove and the second slide groove to affect the first pulley and the second pulley, but also prevent the first slide groove and the second slide groove from being scratched by the outside, further improving the service life of the sliding mechanism and the matching accuracy of the slide assembly and the slide rail. 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 3This is a schematic diagram of the sliding mechanism structure of this application;

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

[0035] Figure 5 for Figure 3 Left view of;

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

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

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

[0039] Figure 9 This is a schematic diagram of the structure of the slide assembly in the sliding mechanism of this application;

[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), 103-second slide groove (1031-second groove wall, 1031a-second groove wall, 1031b-second groove wall, 1032-groove bottom ), 104-yield channel), 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), 206-connecting arm, 207-output end)). 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 Figure 1 and Figure 2 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 is provided with a sliding channel 101, a first slide groove 102 and a second slide groove 103. Figures 3 to 5 The first sliding groove 102 and the second sliding groove 103 are respectively connected to the sliding channel 101. The sliding channel 101, the first sliding groove 102 and the second sliding groove 103 are respectively extended along the first direction.

[0048] The above-mentioned carriage assembly 2 may include a slider 201, a first pulley 202 and a second pulley 203. Figure 7 The first pulley 202 and the second pulley 203 are rotatably connected to the slider 201. The slider 201 is slidably connected to the sliding channel 101. The first pulley 202 and the second pulley 203 are oppositely pressed against the slide rail 1, wherein the first pulley 202 is slidably abutted in the first slide groove 102, and the second pulley 203 is slidably abutted in 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 slider 201 connected to 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 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 preset direction of 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 connected to the first slide groove 102 and the second slide groove 103, respectively. When the slider 201 receives a driving force, the driving force can overcome the pressure applied by the slide rail 1 to the first pulley 202 and the second pulley 203, 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. In the above manner, the first pulley 202 and the second pulley 203 apply back and forth pressure to the slide rail 1 to press against the slide rail 1. Regardless of whether the slider 201 receives a driving force, the slider 201 will not vibrate or move unexpectedly, thereby solving the problems of obvious layer patterns and poor surface glossiness in the printed model and the problem of model printing failure, thereby improving product quality and printing accuracy. Moreover, the slider 201, the first pulley 202, and the second pulley 203 are all installed inside the slide rail 1, which not only makes the structure more compact and effectively reduces the volume of the sliding mechanism 10, but also effectively protects the first pulley 202 and the second pulley 203, thereby increasing the service life of the first pulley 202 and the second pulley 203. In addition, the first chute 102 and the second chute 103 are opened inside the slide rail 1, which can effectively protect the first chute 102 and the second chute 103, not only preventing foreign matter from falling into the first chute 102 and the second chute 103 and affecting the first pulley 202 and the second pulley 203, but also preventing the first chute 102 and the second chute 103 from being scratched by the outside, further increasing the service life of the sliding mechanism 10 and the matching accuracy of the carriage assembly 2 and the slide rail 1.

[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 in opposite directions 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 in opposite directions, 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 also prevented from moving relative to the slide rail 1, 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 slider 201 in transmission connection with the screw rod is driven to move along the length direction of the screw rod.

[0055] As an example, please refer to Figure 7 A screw rod mounting hole 2011 cooperating with the screw rod may be opened 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 and a second rotating shaft (not shown). The first rotating shaft and the second rotating shaft are respectively fixedly connected to the slider 201. A first pulley 202 is connected to the first rotating shaft and is coaxially disposed with the first rotating shaft, and can rotate about the axis of the first rotating shaft. A second pulley 203 is connected to the second rotating shaft and is coaxially disposed with the second rotating shaft, and can rotate about the axis of the second rotating shaft.

[0058] Optionally, the axis of the first pulley 202 and the axis of the second pulley 203 are arranged in parallel, please refer to Figure 4 and Figure 5 That is, the axis of the first rotating shaft and the axis of the second rotating shaft 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.

[0059] As an example, the slider 201 can be configured to fix the wheelbase of the first pulley 202 and the second pulley 203, see Figure 8 and Figure 9 That is, the first rotating shaft and the second rotating shaft are directly fixedly connected to the slider 201, so as to more compactly and effectively connect the first pulley 202 and the second pulley 203 together, thereby more firmly fixing the wheelbase of the first pulley 202 and the second pulley 203.

[0060] Optionally, the cross section of the slide rail 1 is square, please refer to Figure 4 The first chute 102 and the second chute 103 are respectively arranged near the two ends of a diagonal line of the cross section of the slide rail 1, and the bottom of the first chute 102 and the bottom of the second chute 103 are arranged to face each other, thereby increasing the wheelbase of the first pulley 202 and the second pulley 203 as much as possible, thereby fully ensuring the tightening effect.

[0061] 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 4 and Figure 5 , further ensuring the tightness of fit between the first pulley 202 and the first slide groove 102, and the tightness of fit between the second pulley 203 and the second slide groove 103, further preventing the slider 201 from vibrating and moving unexpectedly.

[0062] As an example, please refer to Figure 2 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 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 of the first pulley 202 and the second rotating shaft of the second pulley 203, from moving relative to the slide rail 1 along the X-axis direction and the Y-axis direction. Moreover, since the first pulley 202 and the second pulley 203 cooperate with each other to press against the slide rail 1, when the slider 201 does not receive the driving force, the pressure applied by the slide rail 1 to the first pulley 202 and the second pulley 203 can 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.

[0063] For further information, please refer to Figure 6The first chute 102 may have 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 axial ends of the first pulley 202. The first inclined surfaces 2021 are disposed in a one-to-one correspondence with the first chute walls 1021.

[0064] Please refer to Figure 6 The second chute 103 may have 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.

[0065] 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 .

[0066] 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.

[0067] As an example, please refer to Figure 4 and Figure 5 After the slide assembly 2 is connected to the slide rail 1, the first inclined surface 2021a of the first pulley 202 abuts against the first groove wall 1021a of the first slide groove 102, and the first inclined surface 2021b of the first pulley 202 abuts against the first groove wall 1021b of the first slide groove 102. That is to say, the two first inclined surfaces 2021 of the first pulley 202 respectively abut against the two first groove walls 1021 of the first slide groove 102. The first slide groove 102 applies forces in two different directions to the first pulley 202, and the abutment is more effective. Similarly, the second inclined surface 2031a of the second pulley 203 abuts against the second groove wall 1031a of the second chute 103, and the second inclined surface 2031b of the second pulley 203 abuts against the second groove wall 1031b of the second chute 103. In other words, the two second inclined surfaces 2031 of the second pulley 203 abut against the two second groove walls 1031 of the second chute 103. The second chute 103 applies forces in two different directions to the second pulley 203, making the abutment more effective. Under the combined action of the first pulley 202 and the second pulley 203 and the slide rail 1, the slider 201 can be effectively restricted, so that the slider 201 cannot move in any direction relative to the slide rail 1 when not receiving a driving force, and the slider 201 can only move in the first direction relative to the slide rail 1 when receiving a driving force.

[0068] Please refer to Figure 7 The 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.

[0069] In a preferred embodiment, please refer to Figure 4 and Figure 5 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 are oppositely pressed 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.

[0070] Optionally, refer to Figure 7The 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 force acts 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 more symmetrical. In other words, the pressure applied by the slide rail 1 to the carriage assembly 2 is also more symmetrical.

[0071] Please refer to Figure 2 The slide rail 1 may also be provided with a clearance channel 104. The clearance channel 104 extends along a first direction and is in communication with the sliding channel 101. The slide assembly 2 further includes a connecting arm 206 and an output end 207. The output end 207 is located outside the slide rail 1. The connecting arm 206 is disposed within the clearance channel 104 and is fixedly connected to the slider 201 and the output end 207, respectively, so that the driving force received by the slider 201 is output to the outside of the slide rail 1 through the output end 207.

[0072] Optionally, the output end portion 207 is configured as an output end of the sliding mechanism 10 , so that the driving force received by the slider 201 is output to other mechanisms through the output end portion 207 .

[0073] It is understandable that 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.

[0074] Optionally, refer to Figure 7 The connecting arm 206 is connected to the side of the slider 201 near the first pulley 202. There are at least two first pulleys 202. All first pulleys 202 are spaced apart and rotatably connected to the slider 201. All first pulleys 202 slidably abut within the first sliding groove 102. This allows the pressure exerted by the slide rail 1 on the slide assembly 2 to be closer to the connecting arm 206, further improving the stability of the sliding mechanism 10.

[0075] 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.

[0076] 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.

[0077] Optionally, 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.

[0078] 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.

[0079] 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 back-to-back against the slide rail 1, which can further prevent the slider 201 from moving relative to the slide rail 1. When the slider 201 receives 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, pressing it against the slide rail 1. Regardless of whether the slider 201 is receiving a driving force, the slider 201 will not vibrate or move unexpectedly, thus 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.

[0080] 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.

[0081] Optionally, 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.

[0082] In one example, the first sliding mechanism 100, the second sliding mechanism 200, and the third sliding mechanism are each any of the above-mentioned sliding mechanisms 10. 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.

[0083] 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.

[0084] 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.

[0085] 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: A slide rail having a sliding channel and a first slide groove and a second slide groove respectively connected to the sliding channel, wherein the sliding channel, the first slide groove and the second slide groove respectively extend along a 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 sliding channel; the first pulley and the second pulley are opposed to each other and pressed against the slide rail, wherein the first pulley is slidably abutted in the first slide groove, and the second pulley is slidably abutted in 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 axis of the first pulley and the axis of the second pulley are arranged in parallel; The slider is configured to fix a wheelbase between the first pulley and the second pulley.

3. The sliding mechanism according to claim 1, wherein: The cross section of the slide rail is square; The first chute and the second chute are respectively arranged close to two ends of a diagonal line of the cross section of the slide rail, and the bottom of the first chute and the bottom of the second chute are arranged facing each other.

4. 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.

5. The sliding mechanism according to claim 4, 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.

6. The sliding mechanism according to claim 1, wherein: The slide rail is further provided with a yield channel extending along the first direction and communicating with the slide channel; The slide assembly further includes a connecting arm and an output end portion, wherein the output end portion is located outside the slide rail, and the connecting arm is disposed in the clearance channel and is fixedly connected to the slide block and the output end portion respectively; The output end portion is configured as an output end of the sliding mechanism.

7. The sliding mechanism according to claim 6, wherein: The connecting arm is connected to a side of the slider close to the first pulley; There are at least two first pulleys, all of which are spaced apart and rotatably connected to the sliders, and all of which are slidably abutted against the first sliding grooves.

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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