Buffer device for 3D printer and 3D printer

Abstract

The application relates to a buffering device for a 3D printer and the 3D printer. The buffering device comprises a fixed part provided with an assembly space and a first channel, the first channel being communicated with the assembly space; a moving part slidably assembled in the assembly space, the moving part being provided with a second channel; the first channel and the second channel are both arranged along the sliding direction of the moving part, the first channel is coaxially arranged with the second channel, and the first channel is communicated with the second channel. Thus, the moving part of the buffering device can be lifted and lowered by sliding and reset by gravity. The coaxial design of the first channel and the second channel ensures the linearity of the printing consumables, the dynamic adjustment of the interval of the moving part relative to the fixed part avoids the deformation of the printing consumables, and the integrity of the printing consumables is ensured.

Description

Technical Field

[0001] This application relates to the field of 3D printing equipment technology, and in particular to a buffer device for a 3D printer and a 3D printer. Background Technology

[0002] With the continuous development and widespread application of 3D printing technology, extremely high demands are placed on the efficient and stable transport of printing consumables. In actual use scenarios of 3D printers, when the transport distance of printing consumables between two parts is long, in order to ensure that the printing consumables can be continuously and uninterruptedly transported to the print head to ensure the smooth progress of printing, at least two transport devices are usually arranged in the transport path of the printing consumables to drive the movement of the printing consumables.

[0003] If the synchronization control between two adjacent conveyor devices is ineffective, additional forces will be generated on the printing filament between them. This abnormal force may not only damage the printing filament itself, but may also affect the normal operation of the 3D printer. Utility Model Content

[0004] Therefore, it is necessary to provide a buffer device for 3D printers to address the above-mentioned problems.

[0005] A buffer device includes:

[0006] The fastener has an assembly space and a first channel, and the first channel is connected to the assembly space.

[0007] The movable component is slidably assembled in the assembly space and is provided with a second channel;

[0008] Both the first channel and the second channel extend along the sliding direction of the moving member, and the first channel and the second channel are coaxially arranged and connected to each other.

[0009] In one embodiment, the buffer device further includes a counterweight that is detachably mounted to the moving part.

[0010] In one embodiment, the buffer device further includes a displacement monitoring element, which is mounted on the fixed element and configured to monitor the displacement state of the moving element.

[0011] In one embodiment, the buffer device further includes: a first transmission tube and a second transmission tube;

[0012] The first transmission tube is fixedly assembled to the fastener, and a first transmission channel is formed inside the first transmission tube. The first transmission channel and the first channel are coaxially arranged.

[0013] The second transmission tube is fixedly assembled to the moving part, and a second transmission channel is formed inside the second transmission tube. The second transmission channel and the second channel are coaxially arranged.

[0014] In one embodiment, the first transmission tube includes: a first connector and a first tube body, the first connector being sleeved on the outside of the first tube body, the first connector being assembled with a fixing member, wherein a first transmission channel is provided inside the first tube body; and / or,

[0015] The second transmission tube includes: a second connector and a second tube body. The second connector is sleeved on the outside of the second tube body and is assembled with a moving part. A second transmission channel is provided inside the second tube body.

[0016] In one embodiment, the inner wall surface of the fixing member is provided with one of a guide groove and a guide protrusion, and the moving member is provided with the other of a guide groove and a guide protrusion, with the guide groove and the guide protrusion providing a guiding engagement;

[0017] Both the guide groove and the guide protrusion extend along the sliding direction.

[0018] In one embodiment, the fastener includes: a guide and a mounting base;

[0019] The guide body is provided with an assembly groove, and the guide body is also provided with a clearance opening, which is connected to the assembly groove and is used to avoid printing consumables.

[0020] The guide is mounted on the mounting base, at least a portion of the structure of the mounting base covers the opening of the assembly groove, so that the guide and the mounting base together define the assembly space, and the mounting base is provided with a first channel.

[0021] In one embodiment, the sidewall of the guide is provided with a monitoring hole, which is connected to the assembly groove. The monitoring hole is used to arrange a displacement monitoring element, which is configured to monitor the displacement state of the moving part.

[0022] In one embodiment, the movable member includes a guide portion and a tube body portion, the guide portion being guided and engaged with the fixing member, and the guide portion being adapted to abut against and limit the fixing member along the sliding direction, and the tube body portion being adapted to extend out of the assembly space;

[0023] The guide section has a first sub-channel segment, and the tube body has a second sub-channel segment. The first sub-channel segment and the second sub-channel segment are connected in sequence to form the second channel.

[0024] The aforementioned buffer device allows the moving part to slide, rise, and return to its original position by gravity. The coaxial design of the first and second channels ensures the straightness of the printing filament, and the dynamic adjustment of the distance between the moving part and the fixed part prevents deformation of the printing filament, thus ensuring its integrity.

[0025] This application further proposes a 3D printer that includes the buffer device described in some of the above embodiments. Attached Figure Description

[0026] Figure 1 This is a perspective view of a buffer device according to an embodiment of this application.

[0027] Figure 2 This is a cross-sectional view of a buffer device according to an embodiment of this application.

[0028] Figure 3 This is an exploded view of a buffer device according to an embodiment of this application.

[0029] Figure 4 This is an exploded view of a fastener according to an embodiment of this application.

[0030] Figure 5 This is a perspective view of a buffer device according to another embodiment of this application.

[0031] Figure 6 This is a cross-sectional view of a buffer device according to another embodiment of this application.

[0032] Figure 7 This is an exploded view of a buffer device according to another embodiment of this application.

[0033] Figure 8 This is an exploded view of a fastener according to another embodiment of this application.

[0034] Figure label:

[0035] 100. Buffer device; 1. Fixing component; 10. Assembly space; 101. First channel; 11. Guide body; 110. Assembly groove; 120. Clearance opening; 130. Monitoring hole; 12. Mounting base; 121. First plate; 122. Second plate; 2. Moving component; 201. Second channel; 21. Guide part; 201a. First sub-channel section; 22. Pipe body; 201b. Second sub-channel section; 3. Counterweight; 4. Displacement monitoring component; 40. Monitoring point; 5. First transmission pipe; 50. First transmission channel; 51. First connector; 52. First pipe body; 6. Second transmission pipe; 60. Second transmission channel; 61. Second connector; 62. Second pipe body. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0042] See Figure 1 and Figure 2 ,as well as Figure 5 and Figure 6 As shown, the buffer device 100 according to this application includes a fixing member 1 and a moving member 2. The fixing member 1 is provided with an assembly space 10 and a first channel 101, the first channel 101 communicating with the assembly space 10. The moving member 2 is slidably assembled in the assembly space 10 and is provided with a second channel 201. When the fixing member 1 and the moving member 2 are assembled, both the first channel 101 and the second channel 201 extend along the sliding direction of the moving member 2, and the first channel 101 and the second channel 201 are coaxially arranged and communicate with each other.

[0043] For example, when the buffer device 100 is applied to a 3D printer, the fixed member 1 and the movable member 2 are arranged sequentially in the height direction of the 3D printer, with the movable member 2 positioned above the fixed member 1. This allows the movable member 2 to move up and down relative to the fixed member 1 in the height direction of the 3D printer, and since the movable member 2 is positioned above the fixed member 1, it can fall back down using gravity.

[0044] See Figure 2 and Figure 6As shown, during the process of the moving part 2 rising relative to the fixed part 1, the distance between the first channel 101 and the second channel 201 gradually increases along the sliding direction of the moving part 2; during the process of the moving part 2 falling relative to the fixed part 1, the distance between the first channel 101 and the second channel 201 gradually decreases along the sliding direction of the moving part 2. Furthermore, since the moving part 2 is slidably mounted in the assembly space 10, the assembly space 10 ensures that the first channel 101 and the second channel 201 remain connected throughout the movement of the moving part 2 relative to the fixed part 1.

[0045] For example, during the conveying of printing consumables, the printing consumables are sequentially passed through the first channel 101 and the second channel 201, thereby passing through the buffer device 100. In other words, when the same printing consumable is fully passed through the buffer device 100, if the front part of the printing consumable passes through the second channel 201, the rear part of the printing consumable passes through the first channel 101. It should be understood that, for example, in the conveying direction of the printing consumables, if the front conveying device and the rear conveying device are not synchronized (e.g., the transmission speed and / or transmission force of the front conveying device are different from that of the rear conveying device), abnormal local stress on the printing consumables may cause deformation. For example, if the conveying speed of the front conveying device is greater than that of the rear conveying device, this can be understood as the front conveying device applying a pushing force towards the rear conveying device to the printing consumables, thereby increasing the risk of bending deformation of the portion of the printing consumables located between the front and rear conveying devices due to compression.

[0046] However, according to the buffer device 100 of this application, since the movable member 2 is slidably mounted in the assembly space 10, when the movable member 2 moves relative to the fixed member 1, the movable member 2 moves smoothly under the guidance of the fixed member 1. Even when the conveying speed of the printing consumable by the front-end conveying device is greater than that of the rear-end conveying device, the movable member 2 moves in an elevated state relative to the fixed member 1 under the tension of the printing consumable, that is, the tension of the printing consumable overcomes the gravity of the movable member 2, so that the printing consumable drives the movable member 2 to move upward relative to the fixed member 1. During the process of the movable member 2 moving in an elevated state relative to the fixed member 1, the distance between the first channel 101 and the second channel 201 gradually increases. The space formed by the increased distance between the first channel 101 and the second channel 201 constitutes a buffer space. Thus, inside the buffer device 100, the thrust exerted by the front-end conveying device on the printing consumable in the direction of the rear-end conveying device is eliminated, so that the printing consumable has a better extended state and the risk of bending deformation of the printing consumable is reduced.

[0047] Furthermore, since both the first channel 101 and the second channel 201 extend along the sliding direction of the moving member 2, and the first channel 101 and the second channel 201 are coaxially arranged, when the printing consumable passes through the buffer device 100, the central axis of the printing consumable is completely aligned with the central axis of the first channel 101 and the central axis of the second channel 201, and the length direction of the printing consumable is parallel to the sliding direction of the moving member 2. This ensures the straightness of the printing consumable, and can also be understood as further reducing the risk of bending deformation of the printing consumable to a certain extent for the portion of the printing consumable located inside the buffer device 100.

[0048] Subsequently, when the front-end conveyor is stopped, or when the front-end conveyor's speed is lower than the rear-end conveyor's speed, the printing consumables are stretched or unloaded within the buffer device 100. Furthermore, the moving part 2 automatically resets under gravity, meaning it descends relative to the fixed part 1, and the distance between the first channel 101 and the second channel 201 gradually decreases. Because the moving part 2 can automatically reset, the buffer device 100 can again provide cushioning when the front-end and rear-end conveyors become out of sync again.

[0049] See Figure 2 As shown, in some embodiments of this application, the buffer device 100 may further include a counterweight 3, which is detachably mounted on the movable part 2. Thus, a counterweight 3 of corresponding mass can be selected and installed on the movable part 2 according to actual needs, so as to achieve the effect of changing the overall mass of the movable part 2.

[0050] For example, when the conveying speed of the printing consumables made of different raw materials or with different diameters is greater than that of the conveying speed of the printing consumables at the front end than at the rear end, the magnitude of the force that different printing consumables can generate to drive the moving part 2 to move will differ. In order to ensure that the moving part 2 can move upward in a preset state, there are certain requirements for the total mass of the moving part 2.

[0051] Because the counterweight 3 is detachably assembled to the moving part 2, the moving part 2 can be designed as a small, uniform component, thus reducing its manufacturing cost. Furthermore, by selecting counterweights 3 of different masses and assembling them to the moving part 2, the mass of the moving part 2 can be adjusted to the required mass. This allows the mass of the moving part 2 to be adjusted according to actual needs, giving the buffer device 100 high compatibility; that is, the buffer device 100 can be used with printing consumables made of different materials and with printing consumables of different diameters.

[0052] Combination Figure 1 and Figure 2and combination Figure 5 and Figure 6 As shown, in some embodiments of this application, the buffer device 100 further includes a displacement monitoring element 4, which is mounted on the fixing element 1 so that the displacement monitoring element 4 is stationary relative to the fixing element 1, enabling the displacement monitoring element 4 to more accurately monitor the displacement state of the moving element 2. By actively monitoring the displacement state of the moving element 2, the 3D printer can control the conveying devices located on the front and rear sides of the buffer device 100 to work collaboratively based on the displacement state of the moving element 2.

[0053] For example, see Figure 2 and Figure 6 As shown, in some embodiments of this application, the displacement monitoring element 4 is provided with two monitoring points 40, and the two monitoring points 40 are arranged sequentially along the moving direction of the moving element 2, with one monitoring point 40 located at a high position and the other monitoring point 40 located at a low position. When the moving element 2 is in the lowest position state, the moving element 2 is adapted to trigger the monitoring point 40 located at the low position, so that the displacement monitoring element 4 detects that the moving element 2 is in the lowest position state. In addition, when the moving element 2 is about to reach the highest position state, or when the moving element 2 has reached the highest position state, the moving element 2 is adapted to trigger the monitoring point 40 located at the high position, so that the displacement monitoring element 4 detects that the moving element 2 is about to reach the highest position state at this moment, or has already reached the highest position state.

[0054] When the moving part 2 is triggered by the high-position monitoring point 40, the front-end conveying device is configured to enter a stop state, while the rear-end conveying device is configured to continuously convey. This causes the printing consumables to be in a stretched state or a stress-free state. Furthermore, the moving part 2 automatically resets under gravity, meaning that the moving part 2 is in a descending motion relative to the fixed part 1, and the distance between the first channel 101 and the second channel 201 gradually decreases. When the moving part 2 resets to trigger the low-position monitoring point 40, the front-end conveying device is reconfigured to convey, allowing both the front-end and rear-end conveying devices to simultaneously convey the printing consumables. It should be noted that in some embodiments of this application, the displacement monitoring element 4 can be selected as a Hall sensor, camera, infrared sensor, micro switch, photoelectric switch, or other components capable of monitoring displacement.

[0055] Combination Figures 1 to 3As shown, in some embodiments of the application, the buffer device 100 may further include a first transmission tube 5 and a second transmission tube 6. The first transmission tube 5 is fixedly assembled to the fixing member 1, and a first transmission channel 50 is formed within the first transmission tube 5, which is coaxially arranged with the first channel 101. The second transmission tube 6 is fixedly assembled to the moving member 2, and a second transmission channel 60 is formed within the second transmission tube 6, which is coaxially arranged with the second channel 201. Both the first transmission channel 50 formed in the first transmission tube 5 and the second transmission channel 60 formed in the second transmission tube 6 are used to accommodate printing consumables. Since the first transmission channel 50 is coaxially arranged with the first channel 101 and the second transmission channel 60 is coaxially arranged with the second channel 201, the first transmission channel 50 and the second transmission channel 60 are coaxially arranged, thus ensuring the straightness of the printing consumables when printing consumables simultaneously through the first transmission channel 50 and the second transmission channel 60. In addition, the first transmission pipe 5 and the second transmission pipe 6 not only play a guiding role in the transportation of printing consumables, but also play a protective role, such as preventing the printing consumables from being contaminated by the external environment, or preventing the printing consumables from interfering with the components in the 3D printer.

[0056] Combination Figures 1 to 3 As shown, in some embodiments of the application, the first transmission pipe 5 includes a first connector 51 and a first pipe body 52. ​​The first connector 51 is sleeved on the outside of the first pipe body 52. ​​The first connector 51 is assembled with the fixing member 1 to achieve the effect of fixing the first transmission pipe 5 to the fixing member 1. A first transmission channel 50 is provided inside the first pipe body 52. ​​The second transmission pipe 6 includes a second connector 61 and a second pipe body 62. The second connector 61 is sleeved on the outside of the second pipe body 62. The second connector 61 is assembled with the moving member 2 to achieve the effect of fixing the second transmission pipe 6 to the moving member 2. A second transmission channel 60 is provided inside the second pipe body 62.

[0057] For example, the first connector 51 is detachably mounted to the fixing member 1 so that the first transmission channel 50 inside the first tube 52 is coaxial and connected with the first channel 101, allowing the printing consumable to pass through the first transmission channel 50 and be inserted into the first channel 101. Additionally, the first connector 51 is also detachably fitted onto the outside of the first tube 52, allowing for the replacement of first tubes 52 of different specifications. For instance, in different specifications of first tubes 52, the dimensions of the first transmission channel 50 are different, thus allowing different specifications of first tubes 52 to be adapted to different specifications of printing consumables, thereby giving the buffer device 100 good adaptability. Similarly, the second connector 61 is also detachably fitted onto the outside of the second tube 62, allowing for the replacement of second tubes 62 of different specifications.

[0058] For example, in combination Figures 1 to 3As shown, in some embodiments of the application, the counterweight 3 can be sleeved on the first tube 52 so that the counterweight 3 is indirectly assembled to the movable part 2.

[0059] In some embodiments of this application, the inner wall surface of the fixing member 1 is provided with one of a guide groove and a guide protrusion, and the moving member 2 is provided with the other of a guide groove and a guide protrusion, with the guide groove and the guide protrusion providing a guiding engagement. Furthermore, both the guide groove and the guide protrusion extend along the sliding direction.

[0060] For example, in one embodiment of this application, the inner wall surface of the fixing member 1 is provided with a guide groove, and the moving member 2 is provided with a guide protrusion; or, the inner wall surface of the fixing member 1 is provided with a guide protrusion, and the moving member 2 is provided with a guide groove; or, the inner wall surface of the fixing member 1 is provided with both a guide groove and a guide protrusion, and the moving member 2 is provided with both a guide groove and a guide protrusion. When the fixing member 1 and the moving member 2 are assembled, the guide protrusion engages with the guide groove, and since both the guide groove and the guide protrusion extend along the sliding direction, the guide groove and the guide protrusion provide a guiding engagement between the fixing member 1 and the moving member 2. Furthermore, it should be understood that when the guide protrusion and the guide groove are engaged, at least a portion of the guide protrusion is in the guide groove. Thus, when the moving member 2 is subjected to a force that causes rotation about its central axis, the abutment between the guide protrusion and the guide groove in the circumferential direction of the moving member 2 prevents the moving member 2 from rotating about its own central axis. Therefore, the torsion of printing consumables caused by the coaxial rotation of the moving part 2 relative to the fixed part 1 is effectively avoided during the conveying of printing consumables.

[0061] Combination Figures 1 to 4 As shown, and in combination Figures 5 to 8 As shown, in some embodiments of this application, the fixing member 1 may include a guide body 11 and a mounting base 12. The guide body 11 has an assembly groove 110 and a clearance opening 120 communicating with the assembly groove 110, used to avoid printing consumables. The guide body 11 is mounted on the mounting base 12, at least a portion of the structure of the mounting base 12 covers the opening of the assembly groove 110, so that the guide body 11 and the mounting base 12 together define the assembly space 10, and the mounting base 12 has a first channel 101.

[0062] For example, in combination Figure 2 and Figure 4 As shown, and in combination Figure 6 and Figure 8As shown, in some embodiments of this application, the guide body 11 has a cylindrical mounting groove 110, with the opening of the mounting groove 110 facing downwards. When the guide body 11 is assembled with the mounting base 12, the mounting base 12 blocks the opening of the mounting groove 110, so that the guide body 11 and the mounting base 12 together define the assembly space 10. It should also be noted that during the assembly of the buffer device 100, the operator can insert the movable part 2 into the mounting groove 110 through the opening, and then assemble the guide body 11 and the movable part 2 onto the mounting base 12. Furthermore, since the mounting base 12 is below the guide body 11 and blocks the opening of the mounting groove 110, it also limits the movement of the movable part 2 within the assembly space 10, preventing the movable part 2 from moving out of the opening of the mounting groove 110.

[0063] Mounting base 12 is provided with a first channel 101, and when guide body 11 is installed on mounting base 12, the first channel 101 and assembly space 10 are connected, allowing printing consumables to extend into assembly space 10 through the first channel 101. For example, combined with Figure 4 and Figure 8 As shown, in some embodiments of this application, the mounting base 12 may include a first plate 121 and a second plate 122, which are vertically connected. The overall structure of the mounting base 12 is "L-shaped". A guide 11 is mounted on the first plate 121 of the mounting base 12, and a first channel 101 is provided on the first plate 121. Thus, when the guide 11 is mounted on the first plate 121, the first channel 101 is in communication with the assembly space 10. Furthermore, in conjunction with... Figure 2 and Figure 4 As shown, the guide body 11 can be fixedly connected to the second plate 122 to achieve the effect of fixing the guide body 11 to the mounting base 12; or, combined with Figure 7 and Figure 8 As shown, the guide body 11 is fixedly connected to the first plate 121 to achieve the effect of fixing the guide body 11 to the mounting base 12. In addition, the second plate 122 is suitable for fixed connection to the body of the 3D printer, thereby achieving the effect of installing the buffer device 100 on the body of the 3D printer.

[0064] It should be further noted that, in the above embodiments, the mounting base 12 is described using the example of a first plate 121 and a second plate 122, but this application is not limited to this. For example, in some other embodiments of this application, the mounting base 12 may only include the first plate 121, that is, the first plate 121 constitutes the mounting base 12. In this way, the guide body 11 is fixedly assembled to the first plate 121, and the first plate 121 is adapted to be fixedly connected to the body of the 3D printer, thereby achieving the effect of mounting the buffer device 100 to the body of the 3D printer.

[0065] Combination Figures 1 to 3 As shown, and in combination Figures 5 to 7 As shown, the upper end face of the guide body 11 is provided with a relief opening 120. The relief opening 120 is constructed as a through hole to enable the assembly groove 110 to communicate with the external environment, so that the printing consumables extending into the assembly space 10 can extend out through the relief opening 120.

[0066] For example, combining Figure 2 and Figure 3 As shown, in some embodiments of this application, the moving member 2 includes a guide portion 21 and a tube portion 22. The guide portion 21 is guided and cooperates with the fixing member 1, and the guide portion 21 is adapted to abut and limit the fixing member 1 along the sliding direction. The tube portion 22 is adapted to extend out of the assembly space 10. A first sub-channel segment 201a is provided inside the guide portion 21, and a second sub-channel segment 201b is provided inside the tube portion 22. The first sub-channel segment 201a and the second sub-channel segment 201b are sequentially connected to form a second channel 201. The clearance opening 120 is used to avoid the tube portion 22 of the moving member 2, allowing the tube portion 22 to extend into the assembly space 10. This achieves the effect of the printing consumables passing through the second channel 201 extending out of the assembly space 10, allowing the printing consumables to be conveyed to the conveying device located at the rear end.

[0067] Additionally, it should be noted that, in conjunction with Figure 3 and Figure 4As shown, in some embodiments of this application, the mounting groove 110 disposed in the guide body 11 is cylindrical, and the guide portion 21 of the moving member 2 can be correspondingly designed as cylindrical, thereby achieving the guiding engagement effect between the guide portion 21 and the fixing member 1. The guide portion 21 is also adapted to abut against and limit the upper end wall of the fixing member 1 where the clearance opening 120 is provided, thereby limiting the upper limit of the moving member 2. It should be understood that in some embodiments of this application, the mounting groove 110 is cylindrical and the matching guide portion 21 is cylindrical only as examples, but this application is not limited to this. The specific configuration of the mounting groove 110 and the guide portion 21 can be designed according to actual needs. For example, the mounting groove 110 can also be designed as a prism, and the guide portion 21 can be adapted as a prism. In this way, the guide portion 21 and the guide body 11 can not only guide and engage, but also, in the circumferential direction around the central axis of the moving member 2, the guide body 11 can limit the rotation of the moving member 2 around its own central axis.

[0068] See Figure 6 and Figure 8 As shown, in some embodiments of this application, the sidewall of the guide body 11 is provided with a monitoring hole 130, which communicates with the assembly groove 110. The monitoring hole 130 is used to arrange the displacement monitoring element 4, which is configured to monitor the displacement state of the moving element 2.

[0069] For example, see Figure 6 and Figure 8 As shown, the displacement monitoring component 4 is installed and fixed on the second plate 122 of the mounting base 12, and the moving component 2 is completely within the assembly space 10 of the moving component 2. The monitoring hole 130 is designed as a through hole so that the monitoring hole 130 communicates the assembly groove 110 with the external environment. In this way, the displacement monitoring component 4 installed on the second plate 122 can be used to monitor the moving component 2 which is completely located within the assembly space 10.

[0070] However, this application is not limited to this. For example, in some other embodiments of this application, the monitoring hole 130 is a countersunk hole and communicates with the mounting groove 110. This allows the displacement monitoring element 4 to be mounted in the monitoring hole 130, so that the displacement monitoring element 4 can be used to detect the moving part 2 located entirely within the mounting space 10. It should also be noted that by designing the monitoring hole 130 as a countersunk hole, the displacement monitoring element 4 can also be mounted on the guide body 11. Of course, if the monitoring hole 130 is designed as a through hole, the displacement monitoring element 4 can also be mounted on the guide body 11. For example, in some embodiments, mounting the displacement monitoring element 4 on the guide body 11 allows the mounting base 12 to only have the first plate 121, thus reducing the overall size of the buffer device 100.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0072] The embodiments described above are merely illustrative of several implementation methods of this application, and 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 those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A buffer device for a 3D printer, characterized in that, include: A fastener, wherein the fastener is provided with an assembly space and a first channel, and the first channel is connected to the assembly space; A movable component, which is slidably mounted in the assembly space, and the movable component is provided with a second channel; Both the first channel and the second channel extend along the sliding direction of the moving member, and the first channel and the second channel are coaxially arranged and connected to each other.

2. The buffer device according to claim 1, characterized in that, Also includes: A counterweight, which is detachably mounted on the moving part.

3. The buffer device according to claim 1, characterized in that, Also includes: A displacement monitoring component is assembled to the fixed component and configured to monitor the displacement state of the moving component.

4. The buffer device according to claim 1, characterized in that, Also includes: First transmission tube and second transmission tube; The first transmission tube is fixedly assembled to the fixing member, and a first transmission channel is formed inside the first transmission tube. The first transmission channel is coaxially arranged with the first channel. The second transmission tube is fixedly assembled to the moving part, and a second transmission channel is formed inside the second transmission tube. The second transmission channel and the second channel are coaxially arranged.

5. The buffer device according to claim 4, characterized in that, The first transmission tube includes: a first connector and a first tube body, the first connector being sleeved on the outside of the first tube body, the first connector being assembled with the fixing member, wherein the first tube body is provided with the first transmission channel; and / or, The second transmission tube includes: a second connector and a second tube body, the second connector being sleeved on the outside of the second tube body, the second connector being assembled with the movable component, wherein the second transmission channel is provided inside the second tube body.

6. The buffer device according to claim 1, characterized in that, The inner wall surface of the fixing member is provided with one of the guide groove and the guide protrusion, and the moving member is provided with the other of the guide groove and the guide protrusion, and the guide groove and the guide protrusion guide each other. Both the guide groove and the guide protrusion extend along the sliding direction.

7. The buffer device according to any one of claims 1 to 6, characterized in that, The fastener includes: a guide body and a mounting base; The guide body is provided with an assembly groove, and the guide body is also provided with a clearance opening, which communicates with the assembly groove and is used to avoid printing consumables. The guide is mounted on the mounting base, at least a portion of the structure of the mounting base covers the opening of the assembly groove, so that the guide and the mounting base together define the assembly space, and the mounting base is provided with the first channel.

8. The buffer device according to claim 7, characterized in that, The guide body has a monitoring hole on its side wall, which is connected to the assembly groove. The monitoring hole is used to arrange a displacement monitoring component, which is configured to monitor the displacement state of the moving component.

9. The buffer device according to any one of claims 1 to 6, characterized in that, The movable component includes a guide portion and a tube body portion. The guide portion is guided and cooperates with the fixing component, and the guide portion is adapted to abut against and limit the fixing component along the sliding direction. The tube body portion is adapted to extend out of the assembly space. The guide section has a first sub-channel segment, and the tube body has a second sub-channel segment. The first sub-channel segment and the second sub-channel segment are connected in sequence to form the second channel.

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

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