Cutting material collision structure of 3D printer and 3D printer

Abstract

A cutting collision structure of a 3D printer and a 3D printer, the 3D printer comprising a 3D printing head, the 3D printing head being movable and having a movement stroke, the movement stroke of the 3D printing head passing through the cutting collision structure, the cutting collision structure being capable of triggering a cutter triggering structure in the 3D printing head and not causing interference to the movement of the 3D printing head, the 3D printing head being freely movable.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, specifically to a cutting collision structure for a 3D printer and a 3D printer. Background Technology

[0002] A 3D printer is a device that creates three-dimensional objects by stacking materials layer by layer. The 3D printer head melts 3D printing filament and deposits it layer by layer onto a printing platform along a pre-defined printing path, thus constructing a model with a three-dimensional structure. In existing technologies, a cutter is typically included in the 3D printer head. After printing is complete or when the filament needs to be replaced, the cutter cuts off the old 3D printing filament to allow new filament to be fed into the 3D printer head.

[0003] Currently, the collision element that triggers the cutter is usually placed outside the 3D print head, and the cutter is triggered by the movement of the 3D print head impacting the collision element. However, in existing technologies, most collision elements are exposed in the stroke of the 3D print head, causing them to occupy the printing space in the 3D printer. Utility Model Content

[0004] The purpose of this invention is to provide a cutting collision structure for a 3D printer and a 3D printer. The cutting collision structure can be used to trigger the cutting trigger structure in the 3D printing head without interfering with the movement of the 3D printing head, allowing the 3D printing head to move freely.

[0005] To achieve the objectives of this utility model, the following technical solution is provided:

[0006] In a first aspect, this utility model provides a cutting collision structure suitable for a 3D printer. The 3D printer includes a 3D print head, which is movable and has a travel range. The cutting collision structure is located within the travel range of the 3D print head. The 3D print head includes a cutter triggering structure with a cutter. The cutting collision structure includes a fixed base, a collision member, and a movable member. The fixed base has a storage space. The collision member is rotatably connected to the fixed base. When the collision member is rotated to a first position, it is housed in the storage space. When the collision member is rotated to a second position, at least a portion of the collision member extends out of the storage space toward the 3D print head. The portion of the collision member extending out of the storage space is used to contact the cutter triggering structure to trigger the cutter to cut material. At least a portion of the movable member extends out of the fixed base. The movable member is slidably connected to the fixed base and is drively connected to the collision member. The extended portion of the movable member is located within the travel range of the 3D print head.

[0007] In some embodiments, the cutting collision structure includes a limiting member with deformability, the limiting member being housed in the storage space and connected to the fixed base, and the movable member including a limiting engagement portion for abutting against the limiting member and for applying a force to the limiting member.

[0008] In some embodiments, the cutting collision structure further includes a transmission member that connects the collision member and the movable member, wherein the movable member is driven to the collision member via the transmission member.

[0009] In some embodiments, the transmission component includes a gear, the collision component includes a first gear tooth, and the movable component includes a second gear tooth, the gear meshing with the first gear tooth and the second gear tooth respectively.

[0010] In some embodiments, the limiting mating part includes a limiting groove, the depth direction of the limiting groove intersects with the sliding direction of the movable member, the collision member is at the first position, the limiting member extends into the limiting groove along the depth direction of the limiting groove, and the limiting member is movable along the depth direction of the limiting groove.

[0011] In some embodiments, the limiting groove extends in a constricted shape along the depth direction of the limiting groove, the limiting groove includes a first wall and a second wall opposite to each other, the first wall and the second wall have an included angle of non-0°, and the limiting member includes a third wall and a fourth wall connected at an included angle, the third wall facing the first wall and the fourth wall facing the second wall.

[0012] In some embodiments, the cutting collision structure further includes an elastic element, with its opposite ends abutting against the fixing seat and the limiting element along the depth direction of the limiting groove.

[0013] Secondly, this application provides a 3D printer, which includes a housing, a 3D printing head, and a cutting collision structure as described in any one of the embodiments of the first aspect. The 3D printing head is movably installed in the housing, and the cutting collision structure is fixedly installed in the housing. The 3D printing head has a travel stroke, and the travel stroke of the 3D printing head passes through the cutting collision structure.

[0014] In some embodiments, the travel of the 3D printing head includes a travel in the X-axis direction and a travel in the Y-axis direction. The 3D printing head includes a cutter triggering structure with a cutter. The collider is in the second position. The 3D printing head contacts the collider during the travel in the Y-axis direction. The collider is connected to the cutter triggering structure to trigger the cutter. The 3D printing head contacts the collider during the travel in the X-axis direction. The collider switches from the second position to the first position.

[0015] In some embodiments, the housing includes a first support beam, a second support beam, and a third support beam. The first and second support beams are arranged opposite each other along the Y-axis. The 3D printing head is located between the first and second support beams. The third support beam connects the first and second support beams. At least one of the first and second support beams is equipped with the cutting collision structure. The portion of the movable part extending out of the storage space is close to the connection between the first and third support beams. The 3D printing head contacts the movable part during its travel in the X-axis direction.

[0016] In some embodiments, the 3D printer further includes a nozzle wiping device, which is fixedly installed inside the housing, with the cutting collision structure placed close to the nozzle wiping device, and the 3D print head's travel path passing through the nozzle wiping device.

[0017] This application provides a material cutting collision structure that can hide the collision component. By setting a movable component, the movement of the 3D printing head drives the movable component to slide, so that the slid movable component can drive the collision component to rotate to a second position. The collision component extends at least partially out of the storage space, and the cutting trigger structure on the 3D printing head can contact the collision component to trigger the cutting blade to cut the material. After the printing head hits the collision component, the collision component rotates back to the first position and is completely housed in the storage space. After the collision component is completely housed in the storage space, the collision component will not interfere with the movement of the 3D printing head. The 3D printing head can move more freely at the collision component. The 3D printing head does not need to constantly contact the collision component, and the 3D printing head has a strong tolerance for movement. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the appearance of a 3D printer according to one implementation method;

[0020] Figure 2 A schematic diagram of the appearance of a 3D printing head in one implementation method;

[0021] Figure 3 This is a schematic diagram showing the connection of a 3D printer, a material tube, and a material hopper in one implementation method;

[0022] Figure 4 This is an exploded view of a cutting collision structure according to one embodiment;

[0023] Figure 5 This is a structural diagram of the collision member at the first position in a cutting collision structure according to one embodiment;

[0024] Figure 6 This is a structural diagram of the collision member at the second position in a cutting collision structure according to one embodiment;

[0025] Figure 7 This is an external view of a collision component according to one implementation method;

[0026] Figure 8 This is an appearance drawing of a movable component in one embodiment;

[0027] Figure 9 This is an external view of a transmission component according to one implementation method;

[0028] Figure 10 This is an external view of the limiting member in one embodiment;

[0029] Figure 11 This is a schematic diagram showing the position of a cutting collision structure in a 3D printer according to one implementation method.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100 - 3D printer, 200 - 3D printing line, 300 - material tube, 400 - material hopper;

[0032] 1-Box body, 1A-First support beam, 1B-Second support beam, 1C-Third support beam, 1D-Door, 2-Guide component, 3-3D printing head, 4-Printing platform, 5-Cutting collision structure, 6-Printing space, 7-Feed tube connector, 8-Hot end assembly, 9-Cutter triggering structure, 9A-Cutter, 10-Fixed seat, 11-Collision component, 11A-First gear tooth, 12-Moving component, 12A-Main body, 12B-Extended part, 12C-First slide groove, 12D-Second slide groove 12E-Second gear tooth, 13-Storage space, 14-Window, 15-First rotating shaft, 16-First guide, 17-Second guide, 18-Limiting component, 18A-Card slot, 18B-Third wall surface, 18C-Fourth wall surface, 19-Limiting mating part, 19A-Limiting groove, 19B-First wall surface, 19C-Second wall surface, 20-Transmission component, 20A-Third gear tooth, 20B-Fourth gear tooth, 21-Second rotating shaft, 22-Elastic component, 23-Nose wiping device;

[0033] 001 - X-axis direction, 002 - Y-axis direction, 003 - Z-axis direction. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments.

[0035] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0036] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0037] This application provides a 3D printer and a cutting collision structure installed in the 3D printer. The cutting collision structure can trigger the cutting trigger structure in the 3D print head to cut the material without interfering with the movement of the 3D print head, allowing the 3D print head to move freely.

[0038] For some implementation methods, please refer to Figure 1 The 3D printer 100 includes a housing 1, a guide 2, a 3D printing head 3, a printing platform 4, and a cutting and collision structure 5.

[0039] For some implementation methods, please refer to Figure 1The outer shape of the box 1 can be a hexahedron (i.e., a cube or a cuboid). The box 1 encloses the printing space 6. The printing platform 4, guide 2, 3D printing head 3 and cutting collision structure 5 are all housed in the printing space 6. The printing work of the 3D printer 100 is also completed in the printing space 6.

[0040] In other embodiments, the housing 1 may also have other shapes. Alternatively, in a specific embodiment, the 3D printer 100 may not include the housing 1. It is understood that the main function of the housing 1 is to protect other components inside the housing 1 and to ensure the stability of the printing environment. It can also prevent the printing process from causing pollution or interference to the external environment. Therefore, the shape of the housing 1 is not specifically limited, and the presence or absence of the housing 1 in the 3D printer 100 is not specifically limited.

[0041] For some implementation methods, please refer to Figure 1 The 3D printing head 3 is mounted on the guide member 2, which moves the 3D printing head 3 within the printing space 6 and can move the 3D printing head 3 in at least two directions. The 3D printing head 3 is the main component used for 3D printing; it is used to feed the 3D printing filament 200 and print the filament 200 into a three-dimensional solid. The printing platform 4 supports the three-dimensional solid printed by the 3D printing head 3, and the 3D printing head 3 ejects the filament onto the printing platform 4 to complete the printing process.

[0042] In a specific embodiment, the guide member 2 can drive the 3D printing head 3 to move back and forth in the X-axis direction 001, the 3D printing head 3 can move left and right along the Y-axis direction 002 on the guide member 2, and the printing platform 4 can move up and down along the Z-axis direction 003.

[0043] In some embodiments, the guide can also be a gantry structure, comprising a Y-axis beam and two Z-axis columns. The 3D printing head is mounted on the Y-axis beam and can move left and right along the Y-axis direction. The two Z-axis columns are located on both sides of the Y-axis beam and extend along the Z-axis direction, allowing the Y-axis beam to move up and down along the Z-axis columns. The printing platform is located below the Y-axis beam and between the two Z-axis columns. The printing platform can move back and forth along the X-axis direction, allowing the 3D printing head to move three-dimensionally on the printing platform and complete the printing work.

[0044] For some implementation methods, please refer to Figure 2 The 3D printing head 3 includes a feed tube connector 7, a hot end assembly 8, and a cutter trigger structure 9. The cutter trigger structure 9 is connected to a cutter 9A, which is located between the feed tube connector 7 and the hot end assembly 8. The cutter 9A is at least partially movable so that the movement path of the cutting edge of the cutter 9A passes through the feed port of the hot end assembly 8, thereby cutting the 3D printing filament.

[0045] For some implementation methods, please refer to Figure 3 The 3D printing head 3 is connected to the filament container 400 via a feed tube 300. The filament container 400 holds the 3D printing filament, which is then transported to the 3D printing head 3 for processing and printing via the feed tube 300. The filament container 400 is independently located outside the housing 1 and contains a filament reel on which the 3D printing filament is wound. The feed tube 300 is connected to the filament container 400, through which the 3D printing filament moves and passes through the housing 1 to be transported to the 3D printing head 3.

[0046] In a specific embodiment, please refer to Figure 3 The feed tube connector 7 connects to one end of the feed tube 300, and the other end of the feed tube 300 connects to the hopper 400. The 3D printing filament is then fed through the feed tube 300 to the feed tube connector 7. The feed tube connector 7 and the hot end assembly 8 are positioned opposite each other. The feed tube connector 7 guides the 3D printing filament into the hot end assembly 8, which heats the 3D printing filament until it melts and outputs the melted 3D printing filament to the printing platform 4 for printing.

[0047] In some embodiments, the cutting collision structure 5 is fixedly installed in the housing 1 described above. The cutting collision structure 5 is within the range of the travel of the 3D printing head 3. The cutting collision structure 5 is used to contact the cutting trigger structure 9 and trigger the cutting trigger structure 9. The cutting blade 9A in the cutting trigger structure 9 moves so that the cutting blade 9A can cut the 3D printing material line.

[0048] In a specific embodiment, the cutting collision structure 5 is used to contact the cutter trigger structure 9, causing the cutter 9A to rotate or move. The rotation or movement path of the cutter 9A passes through the material inlet of the hot end assembly 8, thereby achieving the purpose of cutting. Optionally, the cutting collision structure 5 can directly contact and trigger the cutter 9A; or, the cutter trigger structure 9 can further include a transmission component connected to the cutter 9A. The cutting collision structure 5 can trigger the movement of the transmission component, which in turn drives the cutter 9A to move and cut the material.

[0049] For some implementation methods, please refer to Figures 4-6The cutting collision structure 5 includes a fixed base 10, a collision member 11, and a movable member 12. The fixed base 10 has a storage space 13. The collision member 11 is rotatably connected to the fixed base 10. When the collision member 11 is rotated to a first position, it is housed in the storage space 13. When the collision member 11 is rotated to a second position, at least part of the collision member 11 extends out of the storage space 13. The part of the collision member 11 extending out of the storage space 13 contacts the connecting cutter trigger structure 9 to trigger the cutter 9A to cut the material. At least part of the movable member 12 extends out of the fixed base 10. The movable member 12 is slidably connected to the fixed base 10 and is drively connected to the collision member 11. The extended part of the movable member 12 is within the stroke range of the 3D printing head 3.

[0050] Optionally, the fixing base 10 can be fixedly connected to the housing 1, and the fixing base 10 and the housing 1 can jointly enclose the storage space 13. Alternatively, the cutting collision structure can also include a shell, with the fixing base 10 and the shell forming the storage space; or the fixing base 10 has a groove, which is the storage space. The storage space referred to in this application can be closed or open. A window 14 can be provided at the connection between the fixing base 10 and the housing 1, and the storage space 13 communicates with the external space through the window 14. In other embodiments, the fixing base 10 can independently enclose the storage space 13, and the window 14 is opened on the fixing base 10.

[0051] In a specific embodiment, please refer to Figures 4-6 A first rotating shaft 15 is provided in the storage space 13, and the first rotating shaft 15 is connected and fixed to the fixed base 10. The collision member 11 is rotatably connected to the first rotating shaft 15. The collision member 11 is rotatable relative to the first rotating shaft 15, and has a first position and a second position during the rotation stroke of the collision member 11. When the collision member 11 rotates to the first position, the collision member 11 is completely retracted into the storage space 13; when the collision member 11 rotates to the second position, the collision member 11 extends at least partially out of the storage space 13 toward the 3D printing head 3.

[0052] It should be noted that, please refer to Figure 5 The first position, where the collision member 11 rotates, means that the collision member 11 is completely retracted into the storage space 13, with no part protruding from it. Once the collision member 11 is completely retracted into the storage space 13, any position within the storage space 13 can be considered the first position. Please refer to [reference needed]. Figure 6 The second position means that the collision member 11 is at least partially extended out of the storage space 13. It can be fully extended or partially extended. After the collision member 11 is extended out of the storage space 13, any position of the collision member 11 in the external space can be considered as the second position.

[0053] In a specific embodiment, please refer to Figure 6When the collision member 11 rotates to the second position, the portion of the collision member 11 extending out of the storage space 13 extends along the Y-axis direction 002, or the portion of the collision member 11 extending out of the storage space 13 extends along the X-axis direction 001; optionally, the portion of the collision member 11 extending out of the fixing seat 10 is cylindrical. It should be noted that the travel of the 3D printing head 3 includes a travel along the X-axis direction 001 and a travel along the Y-axis direction 002, so the 3D printing head 3 can move along the Y-axis direction 002 to contact the collision member 11, or the 3D printing head 3 can move along the X-axis direction 001 to contact the collision member 11.

[0054] In a specific embodiment, please refer to Figure 4 The movable part 12 is housed in the storage space 13, and at least a portion of it extends out of the fixed base 10. The movable part 12 can slide along the X-axis direction 001 or along the Y-axis direction 002. It should be noted that the portion of the movable part 12 extending out of the fixed base 10 is within the stroke range of the 3D printing head 3. Therefore, when the 3D printing head 3 moves along the X-axis direction 001 or the Y-axis direction 002, the 3D printing head 3 can collide with the movable part 12, thereby causing the movable part 12 to slide along the X-axis direction 001 or the Y-axis direction 002.

[0055] In a specific embodiment, please refer to Figure 4 The movable component 12 includes a main body 12A and a protrusion 12B connected to each other. The main body 12A is housed in the storage space 13 and is kinetically connected to the collision component 11. The protrusion 12B extends out of the fixed base 10 and is used to contact the 3D printing head 3. Optionally, the main body 12A and the protrusion 12B can be connected at an angle, that is, the main body 12A can extend along the X-axis direction 001, and the protrusion 12B can extend along the Y-axis direction 002.

[0056] In a specific embodiment, please refer to Figure 4 and Figure 5 A first guide 16 and a second guide 17 are provided in the storage space 13. Both the first guide 16 and the second guide 17 are connected and fixed to the fixed base 10, and are spaced apart. The first guide 16 and the second guide 17 can be cylindrical. The movable part 12 has independent first slide grooves 12C and second slide grooves 12D, which are spaced apart. The first guide 16 extends into the first slide groove 12C, and the second guide 17 extends into the second slide groove 12D. Optionally, the first guide 16 and the second guide 17 include screws.

[0057] In a specific embodiment, please refer to Figure 4 and Figure 5The first guide 16 and the second guide 17 are spaced apart along the X-axis direction 001, and the first slide groove 12C and the second slide groove 12D are also spaced apart along the X-axis direction 001, with both extending along the X-axis direction 001. It can be understood that the cooperation between the column and the slide groove restricts the sliding direction of the movable part 12, meaning the movable part 12 can slide along the X-axis direction 001. The cooperation between the first guide 16 and the second guide 17 restricts the degree of freedom of movement of the movable part 12 in other directions, ensuring the stability of the movable part 12 during sliding.

[0058] In other embodiments, the storage space 13 may contain only one guide, which is connected and fixed to the fixed base 10. The guide is a long, narrow block. The movable member 12 has only one groove extending along the X-axis direction 001, and the guide extends into the groove to guide the sliding motion. In other embodiments, the number of guides may be two or more; it is understood that the function of the guide is to ensure that the movable member 12 slides along the direction determined by the guide, thereby improving the stability of the sliding motion of the movable member 12.

[0059] In a specific embodiment, the movable member 12 is connected to the collision member 11 via a transmission connection. The sliding of the movable member 12 can drive the collision member 11 to rotate, thereby switching the collision member 11 between a first position and a second position. Optionally, the movable member 12 and the collision member 11 can be directly connected or indirectly connected.

[0060] In a specific embodiment, when the 3D printing head 3 needs to cut material and the collision member 11 is in the first position, the 3D printing head 3 can move along the X-axis direction 001, such that, for example, the guide member slidably connected to the 3D printing head 3 collides with the portion of the movable member 12 extending out of the fixed seat 10, causing the movable member 12 to slide. The sliding of the movable member 12 can drive the collision member 11 to rotate, thereby rotating the collision member 11 to the second position; then the trigger member of the 3D printing head 3 touches the collision member 11 to drive the cutter to move, so as to cut material.

[0061] For some implementation methods, please refer to Figure 4 and Figure 5 The cutting collision structure 5 includes a limiting member 18 with deformation capability. The limiting member 18 is housed in the storage space 13 and connected to the fixed base 10. The movable member 12 includes a limiting mating part 19, which is used to abut against the limiting member 18 and to apply force to the limiting member 18.

[0062] In a specific embodiment, the limiting member 18 can abut against or separate from the limiting mating part 19 through deformation. When the 3D printing head 3 collides with the movable member 12, the movable member 12 has a tendency to slide, so that the limiting mating part 19 applies a force to the limiting member 18, and the deformation of the limiting member 18 allows the movable member 12 to slide smoothly.

[0063] In a specific embodiment, when the 3D printing head 3 does not need to cut material and does not touch the moving part 12, the limiting fitting part 19 abuts against the limiting part 18, and the limiting fitting part 19 and the limiting part cooperate to restrict the sliding of the moving part 12. This ensures that the cutting collision structure 5 will not interfere with the movement of the 3D printing head 3.

[0064] This application provides a cutting collision structure 5 that can hide the collision member 11. By setting a movable member 12, the movement of the 3D printing head 3 drives the movable member 12 to slide, so that the slid movable member 12 can drive the collision member 11 to rotate to a second position. The collision member 11 extends at least partially out of the storage space 13. The cutting trigger structure 9 on the 3D printing head 3 can contact the collision member 11 to trigger the cutting blade 9A to cut the material. After the printing head or the guide member connected to the printing head hits the collision member 11, the collision member 11 rotates back to the first position and is completely housed in the storage space 13. After the collision member 11 is completely housed in the storage space 13, the collision member 11 will not interfere with the movement of the 3D printing head 3. The 3D printing head 3 can move more freely at the collision member 11, and during the cutting process, the 3D printing head 3 does not need to constantly contact the collision member 11. The 3D printing head 3 has a strong tolerance for movement.

[0065] For some implementation methods, please refer to Figure 4 and Figure 5 The cutting collision structure 5 also includes a transmission component 20, which connects the collision component 11 and the movable component 12. The movable component 12 is driven to the collision component 11 through the transmission component 20.

[0066] In a specific embodiment, the transmission member 20 can have a bidirectional transmission function, that is, the movable member 12 can be transmitted to the collision member 11 through the transmission member 20, so that the movable member 12 slides to drive the collision member to rotate. Alternatively, the collision member 11 can be transmitted to the movable member 12 through the transmission member 20, so that the collision member 11 rotates to drive the movable member 12 to slide.

[0067] In a specific embodiment, the movable component 12 can slide back and forth along the X-axis direction 001. When the 3D printing head 3 needs to cut material, it can collide with the movable component 12 and slide backward along the X-axis direction 001. The movable component 12 is driven by the transmission component 20, and the collision component 11 rotates to the second position. The 3D printing head 3 can then move along the Y-axis direction 002, causing the material cutting trigger structure to collide with the collision component 11 and trigger the cutter to cut the material. After cutting is completed, the 3D printing head 3 can move along the X-axis direction 001, causing the outer shell of the 3D printing head or the guide component connected to the 3D printing head to collide with the collision component 11, causing the collision component 11 to rotate and switch to the first position. The collision component 11 is driven by the transmission component 20, and the movable component 12 slides forward and resets along the X-axis direction 001.

[0068] By setting up a transmission component 20, this application can convert the sliding process of the movable component 12 into the rotation process of the collision component 11, thereby realizing the adjustment of the motion direction and saving space in the cutting collision structure 5.

[0069] For some implementation methods, please refer to Figures 6-9 The transmission component 20 includes a gear, the collision component 11 includes a first gear tooth 11A, and the movable component 12 includes a second gear tooth 12E. The gear meshes with the first gear tooth 11A and the second gear tooth 12E respectively.

[0070] In a specific embodiment, please refer to Figure 6 A second rotating shaft 21 is provided in the storage space 13. The second rotating shaft 21 is connected and fixed to the fixed base 10, and the gear is rotatably connected to the second rotating shaft 21. The gear can rotate relative to the second rotating shaft 21.

[0071] In a specific embodiment, please refer to Figure 7 The first gear tooth 11A is located on the outer periphery of the collision member 11, and the first gear tooth 11A is arc-shaped, meshing with the gear. Please refer to... Figure 8 The second gear 12E is arranged along the length of the movable part 12, that is, the second gear 12E forms a rack structure on the movable part 12, and the second gear 12E meshes with the gear.

[0072] In a specific embodiment, when the movable member 12 slides, it engages with the gear through the second gear tooth 12E, causing the gear to rotate. After the gear rotates, it engages with the gear through the first gear tooth 11A, causing the collision member 11 to rotate to the second position. Of course, during the process of the collision member 11 rotating to the first position, the gear can rotate in the opposite direction to cooperate in the transmission.

[0073] In a specific embodiment, please refer to Figure 6 and Figure 9The gear includes a third gear tooth 20A and a fourth gear tooth 20B, both located on the outer circumference of the gear. The third gear tooth 20A meshes with the first gear tooth 11A, and the fourth gear tooth 20B meshes with the second gear tooth 12E. The number of teeth on the third gear tooth 20A and the fourth gear tooth 20B can be different, and their modules can also be different.

[0074] It should be noted that the module of a gear tooth is the quotient obtained by dividing the tooth pitch by pi (π). The larger the module, the larger the radial dimension of the gear. The different modules of the third gear tooth 20A and the fourth gear tooth 20B result in different transmission ratios between the first gear tooth 11A and the fourth gear tooth 20B. This ensures that the moving part 12 slides only a short distance, allowing the colliding part 11 to rotate a larger angle, thus ensuring that the colliding part 11 can rotate to the second position.

[0075] This application sets the transmission component 20 as a gear, and transmits power through the meshing of the gear with the first gear tooth 11A and the second gear tooth 12E. This not only enables the movable component 12 to transmit power to the collision component 11 to achieve the purpose of switching from the first position to the second position, but also enables reverse transmission. That is, the rotation of the collision component 11 drives the movable component 12 to slide in the opposite direction, so that the movable component 12 is reset. At the same time, the gear can adjust the transmission ratio of the movable component 12 to the collision component 11, so that the movable component 12 can drive the collision component 11 to rotate a larger angle with a smaller sliding distance.

[0076] For some implementation methods, please refer to Figure 6 and Figure 8 The limiting mating part 19 includes a limiting groove 19A. The depth direction of the limiting groove 19A intersects with the sliding direction of the movable member 12. The collision member 11 is in a first position. The limiting member 18 extends into the limiting groove 19A along the depth direction of the limiting groove 19A. The limiting member 18 is movable along the depth direction of the limiting groove 19A.

[0077] In a specific embodiment, the depth direction of the limiting groove 19A refers to the direction in which the limiting groove 19A extends from its opening into the interior of the movable member 12. The depth direction of the limiting groove 19A can be orthogonal to the sliding direction of the movable member 12. After the limiting member 18 extends into the limiting groove 19A, the movable member 12 is stuck by the limiting member 18 and cannot move because the limiting member 18 cannot follow the movement of the movable member 12.

[0078] In a specific embodiment, the limiting member 18 can disengage from the limiting groove 19A along its depth direction. When the limiting member 18 does not restrict the movable member 12, the movable member 12 can slide back and forth. This application, by setting a limiting groove and a limiting member to restrict the sliding of the movable member, ensures that the collision member 11 is always in the first position when the 3D printing head 3 does not need to trigger the cutting collision structure 5, and that the collision member 11 will not pop out and interfere with the stroke of the 3D printing head 3.

[0079] For some implementation methods, please refer to Figure 8 and Figure 10 Along the depth direction of the limiting groove 19A, the limiting groove 19A extends in a constricted shape. The limiting groove 19A includes a first wall surface 19B and a second wall surface 19C that are opposite each other. The first wall surface 19B and the second wall surface 19C have an included angle of non-0°. The limiting member 18 includes a third wall surface 18B and a fourth wall surface 18C that are connected at an included angle. The third wall surface 18B faces the first wall surface 19B, and the fourth wall surface 18C faces the second wall surface 19C.

[0080] In a specific embodiment, please refer to Figure 8 The inner contour shape of the limiting groove 19A can be "V" shaped. Therefore, the limiting groove 19A includes a first wall surface 19B and a second wall surface 19C that are opposite to and intersect each other. The limiting member 18 includes a third wall surface 18B and a fourth wall surface 18C that cooperate with it. The limiting member 18 can disengage from the limiting groove 19A through the cooperation of the third wall surface 18B and the first wall surface 19B, or it can be engaged into the limiting groove 19A through the cooperation of the fourth wall surface 18C and the second wall surface 19C.

[0081] This application sets the limiting groove 19A into a "V"-shaped structure. After the 3D printing head 3 triggers the moving part, the limiting part 18 can abut against the two inclined walls (such as the second wall 19C and the fourth wall 18C), so that the limiting part 18 can be dislodged from the limiting groove 19A. By using the passive sliding method of the limiting part 18, the need to control the movement of the limiting part 18 alone is reduced.

[0082] For some implementation methods, please refer to Figure 4 and Figure 5 The cutting collision structure 5 also includes an elastic element 22. Along the depth direction of the limiting groove 19A, the two opposite ends of the elastic element 22 abut against the fixing seat 10 and the limiting element 18.

[0083] In a specific embodiment, the elastic element 22 can be a linear spring. The two opposite ends of the elastic element 22 abut against the fixed base 10 and the limiting member 18, respectively, so that the deformation direction of the elastic element 22 is the same as the depth direction of the limiting groove 19A. Therefore, when the elastic element 22 is not deformed, the limiting member 18 can extend into the limiting groove 19A. When the limiting groove 19A presses against the limiting member 18 through its wall, the limiting member 18 can press the elastic element 22 until it deforms, thereby disengaging the limiting member 18 from the limiting groove 19A.

[0084] In a specific embodiment, please refer to Figure 10 The limiting member 18 has a slot 18A, the elastic member 22 is housed in the slot 18A, and at least part of it extends out of the slot 18A to connect to the fixing seat 10.

[0085] This application provides an elastic element 22 to abut against the limiting element 18, so that when the limiting element 18 is dislodged from the limiting groove 19A, the elastic element 22 is compressed and has elastic potential energy. During the process of the collision element 11 returning to the first position, the movable element 12 is reset, and the elastic element 22 can abut against the limiting element 18 and enter the limiting groove 19A. The elastic element 22 plays the role of elastic reset of the limiting element 18.

[0086] For some implementation methods, please refer to Figure 11 The housing 1 includes a first support beam 1A, a second support beam 1B, and a third support beam 1C. The first support beam 1A and the second support beam 1B are arranged opposite each other along the Y-axis direction 002. The 3D printing head 3 is located between the first support beam 1A and the second support beam 1B. The third support beam 1C connects the first support beam 1A and the second support beam 1B. At least one of the first support beam 1A and the second support beam 1B is equipped with a cutting collision structure 5. The part of the movable part 12 that extends out of the storage space 13 is close to the connection between the first support beam 1A and the third support beam 1C. The 3D printing head 3 contacts the movable part 12 during its stroke in the X-axis direction 001.

[0087] In a specific embodiment, the housing 1 may include an openable and closable door 1D, with the 3D printing head 3 facing the door 1D, and the second support beam 1B and the door 1D arranged opposite each other along the X-axis direction 001. The two opposite sides of the 3D printing head 3 along the Y-axis direction 002 are the first support beam 1A and the second support beam 1B, respectively. The 3D printing head 3 can move along the Y-axis direction 002 to approach either the first support beam 1A or the second support beam 1B.

[0088] In a specific embodiment, please refer to Figure 11The 3D printer 100 includes a cutting collision structure 5, which is mounted on a first support beam 1A and together with the first support beam 1A encloses the aforementioned storage space 13. The cutter triggering structure 9 in the 3D printing head 3 is located on the side facing the first support beam 1A. Thus, when the 3D printing head 3 moves along the Y-axis direction 002 toward the first support beam 1A, it can contact the collision member 11, triggering cutting.

[0089] In other embodiments, the 3D printer 100 may further include two cutting collision structures 5, one of which is mounted on the first support beam 1A and the other on the second support beam 1B. The cutter triggering structure 9 in the 3D printing head 3 may be located on one side facing the first support beam 1A and the second support beam 1B. Thus, cutting can be triggered when the 3D printing head 3 moves along the Y-axis direction 002 toward either the first support beam 1A or the second support beam 1B.

[0090] In other embodiments, please refer to Figure 11 The portion of the movable part 12 extending out of the storage space 13 is close to the connection between the first support beam 1A and the third support beam 1C, and the collision part 11 is located in the middle of the first support beam 1A, that is, the collision part 11 is closer to the door 1D than the third support beam 1C. Therefore, after the 3D printing head 3 moves along the X-axis direction 001 towards the space between the first support beam 1A and the second support beam 1B, it can drive the movable part 12 to slide.

[0091] This application sets the cutting collision structure 5 on the Y-axis direction 002, which will not affect the movement of the 3D printing head 3 on the X-axis direction 001. Furthermore, the part of the movable part 12 that extends out of the storage space 13 is located at the corner of the box 1, which can minimize the interference of the movable part 12 on the movement of the 3D printing head 3.

[0092] In some embodiments, the collision element 11 is in the second position, the 3D printing head 3 contacts the collision element 11 in the Y-axis direction 002, the collision element 11 is connected to the cutter triggering structure 9 to trigger the cutter 9A, the 3D printing head 3 contacts the collision element 11 in the X-axis direction 001, and the collision element 11 switches from the second position to the first position.

[0093] In a specific embodiment, the cutting collision structure 5 is mounted on the first support beam 1A. The movable member 12 can slide back and forth along the X-axis direction 001. When the collision member 11 is fully rotated out of the fixed seat 10 and in the second position, the collision member 11 extends out of the fixed seat 10 along the Y-axis direction 002. The 3D printing head 3 contacts the collision member 11 during its travel in the Y-axis direction 002. The collision member 11 is connected to the cutter triggering structure 9 to trigger the cutter 9A.

[0094] In a specific embodiment, after the 3D printing head 3 completes the cutting, the 3D printing head 3 can move along the X-axis direction 001 to impact the collision member 11 and rotate. The collision member 11 retracts to the fixed seat 10 and is in the first position.

[0095] The 3D printing head 3 moves in the Y-axis direction 002 to contact the collision component 11 to cut the material, and moves in the X-axis direction 001 to impact the collision component 11 to reset the collision component 11. These two actions are achieved in two independent directions to ensure that the collision cutting or collision rebound process does not interfere with each other, and to ensure that the collision component 11 will not rebound and reset during the collision cutting process.

[0096] For some implementation methods, please refer to Figure 11 The 3D printer 100 also includes a nozzle wiping device 23, which is fixedly installed inside the housing 1. The cutting collision structure 5 is placed near the nozzle wiping device 23, and the movement of the 3D printing head 3 passes through the nozzle wiping device 23.

[0097] In a specific embodiment, the nozzle wiping device 23 is used to clean the waste material washed away during the nozzle replacement process of the hot end assembly 8, as well as to clean the waste material adhering to the surface of the nozzle during the printing process. The nozzle wiping device 23 can be installed on the wall panel opposite to the door 1D, and the nozzle wiping device 23 can be close to the first support beam 1A.

[0098] This application sets the wiping nozzle device 23 close to the cutting collision structure 5, so that after the 3D printing head 3 completes the cutting, it can quickly move to the wiping nozzle device 23 to flush away the waste material remaining at the nozzle; thus, the stroke of the 3D printing head 3 is compact, saving printing time.

[0099] In the description of the embodiments of this utility model, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship of the drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0100] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. For example, a connection includes detachable and non-detachable connections. A fixed connection can include detachable fixed connections and non-detachable fixed connections, a rotating connection can include detachable rotating connections and non-detachable rotating connections, and a sliding connection can include detachable sliding connections and non-detachable sliding connections. A connection can also be a direct connection or an indirect connection through a component. For example, a detachable fixed connection refers to a connection where the positional relationship between at least two connected objects can be fixed in the installed state; similarly, there are rotating connections, sliding connections, etc.

[0101] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the present utility model.

Claims

1. A cutting collision structure for a 3D printer, characterized in that, The 3D printer includes a 3D print head, which is movable and has a travel stroke. The cutting collision structure is within the travel stroke of the 3D print head, and the 3D print head includes a cutting trigger structure with a cutting blade. The material cutting collision structure includes a fixed base, a collision member, and a movable member. The fixed base has a storage space. The collision member is rotatably connected to the fixed base. When the collision member is rotated to a first position, it is housed in the storage space. When the collision member is rotated to a second position, at least a portion of the collision member extends out of the storage space toward the 3D printing head. The portion of the collision member extending out of the storage space is used to contact the cutting trigger structure to trigger the cutting blade to cut the material. The movable component extends at least partially from the fixed base, the movable component is slidably connected to the fixed base, and the movable component is drively connected to the collision component; the extended portion of the movable component is within the stroke range of the 3D printing head.

2. The cutting collision structure according to claim 1, characterized in that, The cutting collision structure includes a limiting member with deformation capability, the limiting member is housed in the storage space and connected to the fixed base, and the movable member includes a limiting mating part, the limiting mating part is used to abut against the limiting member, and the limiting mating part is used to apply force to the limiting member.

3. The cutting collision structure according to claim 1, characterized in that, The cutting collision structure also includes a transmission component, which connects the collision component and the movable component, and the movable component is driven to the collision component through the transmission component.

4. The cutting collision structure according to claim 3, characterized in that, The transmission component includes a gear, the collision component includes a first gear tooth, and the movable component includes a second gear tooth. The gear meshes with the first gear tooth and the second gear tooth, respectively.

5. The cutting collision structure according to claim 2, characterized in that, The limiting mating part includes a limiting groove, the depth direction of which intersects with the sliding direction of the movable member. The collision member is at the first position, and the limiting member extends into the limiting groove along the depth direction of the limiting groove. The limiting member is movable along the depth direction of the limiting groove.

6. The cutting collision structure according to claim 5, characterized in that, Along the depth direction of the limiting groove, the limiting groove extends in a constricted shape. The limiting groove includes a first wall and a second wall opposite to each other. The first wall and the second wall have an included angle of non-0°. The limiting member includes a third wall and a fourth wall connected at an included angle. The third wall faces the first wall and the fourth wall faces the second wall.

7. The cutting collision structure according to claim 6, characterized in that, The cutting collision structure also includes an elastic element, with the two opposite ends of the elastic element abutting against the fixed seat and the limiting element along the depth direction of the limiting groove.

8. A 3D printer, characterized in that, The 3D printer includes a housing, a 3D printing head, and a cutting and collision structure as described in any one of claims 1-7. The 3D printing head is movably mounted in the housing, and the cutting and collision structure is fixedly mounted in the housing. The 3D printing head has a travel distance, and the travel distance of the 3D printing head passes through the cutting and collision structure.

9. The 3D printer according to claim 8, characterized in that, The 3D printing head has a travel distance including a travel distance in the X-axis direction and a travel distance in the Y-axis direction. The 3D printing head includes a cutter triggering structure with a cutter. The collision member is in the second position. The 3D printing head contacts the collision member during the travel distance in the Y-axis direction. The collision member is connected to the cutter triggering structure to trigger the cutter. The 3D printing head contacts the collision member during the travel distance in the X-axis direction. The collision member switches from the second position to the first position.

10. The 3D printer according to claim 9, characterized in that, The housing includes a first support beam, a second support beam, and a third support beam. The first support beam and the second support beam are arranged opposite to each other along the Y-axis. The 3D printing head is located between the first support beam and the second support beam. The third support beam connects the first support beam and the second support beam. The cutting collision structure is installed on at least one of the first support beam and the second support beam. The portion of the movable part extending out of the storage space is close to the connection between the first support beam and the third support beam. The 3D printing head contacts the movable part during its travel in the X-axis direction.

11. The 3D printer according to claim 8, characterized in that, The 3D printer also includes a nozzle wiping device, which is fixedly installed inside the housing. The cutting collision structure is placed close to the nozzle wiping device, and the movement of the 3D printing head passes through the nozzle wiping device.

Images