CN-121989448-A - Detachable spray head structure and 3D printer

CN121989448ACN 121989448 ACN121989448 ACN 121989448ACN-121989448-A

Abstract

The invention relates to the technical field of 3D printing equipment, in particular to a detachable spray head structure and a 3D printer. The detachable nozzle structure in the 3D printer comprises a nozzle and a grabbing mechanism which are detachably connected along a first direction, wherein any one of the grabbing mechanism and the nozzle is provided with a first joint, the other one of the grabbing mechanism and the nozzle is provided with a second joint, the second joint comprises an elastic structure capable of generating elastic deformation, a movable part and a fixed part, the movable part and the fixed part extend along the first direction, the movable part is movably sleeved on the periphery of the fixed part, the elastic structure is respectively connected with the movable part and the fixed part, the fixed part is fixed with the nozzle or the grabbing mechanism, a locking mechanism is arranged between the movable part and the first joint, and the movable part is driven to move along the first direction near the grabbing mechanism or the nozzle when the locking mechanism is locked, so that the elastic structure is compressed.

Inventors

GAO CE
LI QIANG
LI HUA
LI ZHANZHAO
GUO WEI
DENG CHENGLONG
Shao Hangdong

Assignees

深圳闪铸三维科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260317

Claims (10)

1. Can dismantle shower nozzle structure, its characterized in that includes: The shower nozzle (200) and snatch mechanism (100) of detachable connection that arrange along first direction, snatch mechanism (100) be close to shower nozzle (200) one end with shower nozzle (200) are close to the arbitrary one of snatch mechanism (100) one end two is provided with first joint (110), and another of them is provided with second joint (210): The second connector (210) comprises an elastic structure (213) capable of elastically deforming along the first direction, a movable part (211) and a fixed part (212) which extend along the first direction, the movable part (211) is movably sleeved on the periphery of the fixed part (212), the elastic structure (213) is respectively connected with the movable part (211) and the fixed part (212), and the fixed part (212) is fixed with the spray head (200) or the grabbing mechanism (100); A locking mechanism is arranged between the movable piece (211) and the first joint (110), the movable piece (211) is driven to move along the first direction close to the grabbing mechanism (100) or the spray head (200) when the locking mechanism is locked, and the elastic structure (213) is compressed.
2. The detachable nozzle structure according to claim 1, characterized in that the gripping mechanism (100) is provided with the first joint (110), the nozzle (200) is provided with the second joint (210), the movable member (211) is provided with a spiral groove (2111), the spiral groove (2111) extends from one end of the movable member (211) close to the gripping mechanism (100) in the first direction in a direction away from the gripping mechanism (100), the first joint (110) can be sleeved on the periphery of the movable member (211), the first joint (110) is provided with a locking member (111) capable of rotating around the central axis of the first joint (110), the locking member (111) can move along the spiral groove (2111), and the spiral groove (2111) and the locking member (111) form the locking mechanism; Or, the first joint (110) is sleeved on the periphery of the movable piece (211), the first joint (110) is provided with a spiral groove (2111), the spiral groove (2111) extends from one end, close to the spray head (200), of the first joint (110) along the first direction towards the direction away from the spray head (200), the movable piece (211) is provided with a locking piece (111), the locking piece (111) can rotate around the central shaft of the first joint (110), and the locking piece (111) can move along the spiral groove (2111).
3. The detachable nozzle structure according to claim 1, wherein the gripping mechanism (100) is provided with the first joint (110), the nozzle (200) is provided with the second joint (210), one end of the gripping mechanism (100) close to the nozzle (200) is further provided with a first positioning component (130), one end of the nozzle (200) close to the gripping mechanism (100) is further provided with a second positioning component (220), the first positioning component (130) and the second positioning component (220) are in butt joint positioning along the first direction, and the second positioning component (220) is fixedly connected with the fixing piece (212).
4. The detachable nozzle arrangement according to claim 1, characterized in that the gripping means (100) is provided with the first joint (110), the nozzle (200) is provided with the second joint (210), the elastic structure (213) comprises: An elastic member (2131) interposed between the movable member (211) and the fixed member (212), the elastic member (2131) being elastically deformable, and The stop piece (2132) is fixedly connected with the fixing piece (212), one end, close to the grabbing mechanism (100), of the elastic piece (2131) is connected with the stop piece (2132), and one end, far away from the grabbing mechanism (100), of the elastic piece (2131) is connected with the movable piece (211).
5. A removable head structure according to claim 3, wherein the end face of the first positioning assembly (130) adjacent to the head (200) is provided with at least three positioning projections (131), at least three of the positioning projections (131) are not collinear, the end face of the second positioning assembly (220) adjacent to the gripping mechanism (100) is provided with at least three positioning grooves (221), each positioning projection (131) being positioned in abutment with one of the positioning grooves (221); Or, the end face of the first positioning component (130) close to the spray head (200) is provided with at least three positioning grooves (221), at least three positioning grooves (221) are not collinear, the end face of the second positioning component (220) close to the grabbing mechanism (100) is provided with at least three positioning protrusions (131), and each positioning protrusion (131) is in butt joint positioning with one positioning groove (221).
6. The detachable nozzle structure according to claim 5, wherein two opposite ends of the positioning groove (221) are provided with cylinders (222), an extending direction of the cylinders (222) is perpendicular to an arrangement direction of the two cylinders (222), and an outer peripheral wall of the cylinders (222) can provide guidance for butt joint of the positioning protrusion (131) and the positioning groove (221).
7. The detachable nozzle structure according to claim 6, wherein the positioning protrusion (131) is a spherical protrusion, the positioning groove (221) is a spherical groove, The included angle between two tangent lines formed at the contact points of the positioning bulges (131) and the two cylinders (222) is 35-45 degrees.
8. The detachable nozzle structure according to claim 2, wherein the gripping mechanism (100) further comprises: -a drive assembly (120), the drive assembly (120) comprising a drive member (121) and a transmission structure (122), the transmission structure (122) comprising: A first transmission gear (1221) connected to the output end of the driving member (121), the central axis of the first transmission gear (1221) coinciding with the central axis of the output end of the driving member (121), and And a second transmission gear (1222) connected with the locking piece (111), wherein the central axis of the second transmission gear (1222) coincides with the central axis of the first joint (110), the second transmission gear (1222) is meshed with the first transmission gear (1221), and the driving piece (121) can drive the first transmission gear (1221) to rotate around the central axis of the first transmission gear (1221).
9. A removable nozzle structure according to any one of claims 1-3, wherein the moveable member (211) is provided with a mating protrusion (2112), the stationary member (212) is provided with a mating sliding groove (2121), the mating sliding groove (2121) extending in the first direction, the mating protrusion (2112) being in sliding engagement with the mating sliding groove (2121).
A 3D printer comprising a motion unit and a detachable nozzle structure according to any one of claims 1-9, the motion unit being configured to drive the detachable nozzle structure to move in space.

Description

Detachable spray head structure and 3D printer Technical Field The invention relates to the technical field of 3D printing equipment, in particular to a detachable spray head structure and a 3D printer. Background FDM (fused deposition) 3D printer makes the printing consumables melt and deposit to print the platform through high temperature heating print shower nozzle, and the cooling is condensed rapidly when melting the printing consumables contact print platform, and print shower nozzle deposits the printing consumables layer upon layer on the print platform along the printing route that sets for to the model that has three-dimensional structure is constructed. The existing FDM printing technology is realized by adopting a technical route that a plurality of spray heads are respectively grabbed by a spray head seat in order to meet the printing requirements of multiple materials and multiple colors. The technical mode is that a grabbing mechanism is arranged at the original position where the spray heads are installed, the grabbing mechanism is used for grabbing and fixing the spray heads, a base is arranged on the other side, and a plurality of spray heads are installed on the base. When a certain spray head is needed to be used, the grabbing mechanism is moved, and the spray head to be used on the base is grabbed and fixed by the grabbing mechanism and is printed. When the spray heads need to be replaced, the original grabbing spray heads are replaced by the grabbing mechanism and moved to the spray heads to be used again, the spray heads to be used are grabbed and fixed, printing is conducted again, and the numerical control machining center is similar to the cutter replacing operation of a numerical control machining center. However, in the current spray head switching technology, only one-time power is used for locking, namely when the spray head needs to be fixed, the grabbing mechanism applies a force which grabs and fixes the spray head, and then the grabbing mechanism does not apply force any more. It can be appreciated that due to the existence of the redundant design, a deviation exists between the actual storage position and the theoretical storage position of the spray head on the base, and the spray head is grabbed by using the grabbing mechanism at the moment, so that the spray head can be grabbed and fixed on the premise that the spray head is not accurately positioned with the grabbing mechanism. In combination with the existing spray head switching technology, a force is applied only at the moment when the spray head needs to be fixed, when the spray head is grabbed and fixed on the premise that the spray head is not accurately positioned with the grabbing mechanism, the grabbing mechanism is fixed with the spray head at the moment, the grabbing mechanism is stably fixed with the spray head, but after the force is removed by the grabbing mechanism, the problem of looseness between the spray head and the grabbing mechanism can occur, and normal printing operation is affected. Therefore, there is a need for a detachable nozzle structure and a 3D printer to solve the above problems. Disclosure of Invention The invention aims to provide a detachable spray head structure and a 3D printer, so as to realize the detachable fixation of a spray head and a spray head seat, not only facilitate the disassembly and the assembly, but also ensure that the spray head and the spray head seat are always elastically abutted, and the fixation effect is good. To achieve the purpose, the invention adopts the following technical scheme: Can dismantle shower nozzle structure includes: The shower nozzle and the grabbing mechanism that just can dismantle the connection are arranged along first direction, grab the mechanism be close to the shower nozzle one end with the shower nozzle is close to one end of grabbing the mechanism either be provided with first joint, another of them is provided with the second joint: The second connector comprises an elastic structure capable of generating elastic deformation along the first direction, a movable piece and a fixed piece, wherein the movable piece and the fixed piece extend along the first direction, the movable piece is movably sleeved on the periphery of the fixed piece, the elastic structure is respectively connected with the movable piece and the fixed piece, and the fixed piece is fixed with the spray head or the grabbing mechanism; and a locking mechanism is arranged between the movable piece and the first joint, the movable piece is driven to move along the first direction and close to the grabbing mechanism or the spray head when the locking mechanism locks, and the elastic structure is compressed. As an alternative, the grabbing mechanism is provided with the first connector, the spray head is provided with the second connector, the movable piece is provided with a spiral groove, the spiral groove extends from one end of the movable piece, which is close to t