[0036] Contraction below Figure 1-5 Further detailed description of the present application.
[0037] The present application example discloses a 3D printer printhead, reference figure 1 , figure 2 , Including the printer 1, the printing seat 1 is disposed to convey the material 2 and the printing mechanism 3 provided in the printer 1 to melt the material 3.
[0038] The printer includes a base 11 that is fixed to the mounting top frame 12 on the side of the base 11, which is fixed to the mount 13 and the mount 13 of the lower end surface of the mounting top frame 12 and fixed to the base 11 to place the mounting top frame 12 and mounting The protective housing 14 hooded in the seat 13. The base 11 is rotatably coupled to a pulley 111 away from the side of the protective housing 14, and the pulley 111 is used to slide on the slide. The mounting top frame 12 is fixed to the feed guide seat 121 located above the conveying mechanism 2 to which the material passes, and the protective housing 14 is opened to the avoidance groove through which the feed guide seat 121 is passed.
[0039] Refer figure 1 , image 3 The mounting seat 13 includes a mounting main seat 131 that is fixed to the lower end surface of the mounting top frame 12, and the movable sub-seat 132, the mounting main seat 131 has a mounting chamber, and the side of the mounting main seat 131 is provided with a loading port in the mounting chamber. . The lower portion of the movable sub-seat 132 is hinged by the hinge shaft to the inner wall of the charge port to control the fitting port, and the protective housing 14 is open to avoid the gap that is flipped by the movable trailer 132.
[0040] Refer Figure 4 , Figure 5 The active discharge seat 132 protrudes that the fixed plate 1321 that extends into the mounting cavity, and the conveying mechanism 2 includes rotating the active roller 21 connected to the mount 13, rotatably coupled to the driven roller 22 and driving active roller 21 and the active roller 21 rotate the drive assembly 23, the active roller 21, and the driven roller 22 to convey the material. The circumferential surface of the active roller 21 and the driven roller 22 surrounds the restricted groove 25 having a material strip, and the inner wall of the restricted groove 25 is provided with a non-slip rib, and the possibility of the material is slippery.
[0041] Refer image 3 , Figure 4 The drive assembly 23 includes a drive motor 232 that is rotatably coupled to the mounting chamber, driving the active shaft 231 rotating, and the coaxial fixation is set at the first active gear 233 of the active shaft 231, and the coaxial fixation is set at the active roller 21. And the first driven gear 234 of the first active gear 233 is engaged, the coaxial fixation is set to the second active gear 235 of the active roller 21 and the coaxial fixation is set at the driven roller 22 and the external active The second driven gear 236 of the gear 235. Specifically, the drive motor 232 is a servo motor, and the drive motor 232 is fixedly coupled to the outer wall of the mounting main seat 131, and the output shaft of the drive motor 232 is fixedly coupled to the active shaft 231.
[0042] The top wall of the mounting main seat 131 is provided with a feed port 1311 communicating with the mounting chamber and the feed guide, and the top wall of the mounting main seat 131 is opened, and there is a slip chamber 1312 communicating with the feed port 1311. The mounting main seat 131 is located on one side of the charge opening and is connected to the limit hole in which the slip chamber 1312 is connected. The slip chamber 1312 is slipped and connected to the movable plate 1313, and the movable plate 1313 is opened with a through hole 1315 supplied by the material, and the movable plate 1313 is located in the inner peripheral wall of the through hole 1315, and when the pressure sensor reaches a certain pressure value, drive The motor 232 is in a power-off state. A second elastic member 1314 forcing the movable plate 1313 and the movable plate 1313 toward the direction of the sliding chamber 1312 and the movable plate 1313, specifically, the second elastic member 1314 is a compression spring, one end of the compression spring is fixed to The inner wall of the slipper chamber 1312 is fixed to the other end of the compression spring to be attached to the movable plate 1313.
[0043] Refer Figure 4 , Figure 5 The movable mechanism 4 is disposed between the movable sub-seat 132 and the mounting main seat 131 to achieve the free end detachable connection of the movable sub-seat 132, and the fixing mechanism 4 includes a slip-shaped limit of the movable deputy seat 132. The bit rod 41 is fixed to the limit rod 41 and the mounting plate 42 externally outside the movable sub-seat 132 and is fixed between the movable sub-seat 132 and the mounting plate 42 to force the limit rod 41 in the limit hole. An elastic member 43. The first elastic member 43 is a tension spring, and one end of the tension spring is fixedly coupled to the outer wall of the movable sub-seat 132, and the other end of the tension spring is fixed to the mounting plate 42, the resilient force of the compression spring is smaller than the elastic modification of the tensile spring. Threshold. The outer side wall of the movable sub-seat 132 is fixedly connected to the ear plate 46 located above the restricted rod 41, and the movable trailer 132 is provided with an unlocking plate 45, and the unlocking plate 45 is hinged to the ear plate 46 by a hinge shaft, and the mounting plate 42 is vertical. The movement is connected to the slider 44, and one end of the unlock plate 45 is hinged in the slider 44, and the top of the unlocked plate 45 is close to the top of the movable sub-seat 132. After the limit rod 41 is inserted into the limit hole, the restricted rod 41 abuts the sidewall of the movable plate 1313 forces the movable plate 1313 so that the through hole 1315 of the movable plate 1313 and the feed port 1311 are in a positive state. The resilient formation occurs when the compression spring occurs.
[0044] Refer figure 1 , Figure 5 Both the active roller 21 and the driven roller 22 are provided with a fluid passage 24 for cooled through, and the protective casing 14 is provided with an infusion assembly 5 that delivers the coolant of the coolant 24. The infusion assembly 5 includes a cooling box 51 that is fixed to the upper end surface of the protective casing 14 to be stored in the cooling liquid, the first liquid tube 52, and the second liquid tube 53, the active roller 21, and the driven roller 22 are rotated. There are two in the rotary joint 54, the first liquid tube 52 and the second liquid tube 53 are provided. The structure of the active roller 21 and the driven roller 22 is the same, in the present embodiment, the driven roller 22 is an example, one end of the first liquid tube 52 is connected to the cooling tube 51 and the other end is connected to the driven roller 22 one of the rotary connections. 54. One end of the second liquid tube 53 is connected to the cooling tank 51 and the other end is connected to another rotary joint 54 on the driven roller 22. The first liquid tube 52 is provided with a pumping pump 55 that is pumped into the flow liquid passage 24 in the cooling box 51, and the first liquid tube 52 and the second liquid tube 53 connected to the active roller 21 are hard tersons, which are connected to the driven The first liquid tube 52 and the second liquid tube 53 of the roller 22 are both a corrugated telescopic hose.
[0045] Refer figure 2 , image 3 The printing mechanism 3 includes a throat 31 fixed to the mounting chamber, which is fixed to the lower portion of the throat 31 and the nozzle 32 which is exposed to the protective housing 14 and the fixed sleeve 31 to heat the throat 31. 33. The axis of the throat 31 is vertically disposed, and the throat 31 is located directly below the limit slot 25, and the throat 31 coaxial fixing sleeve is provided with a heat insulating sleeve (not shown), and the central fixed sleeve of the throat 31 is provided. The heat dissipation block 34 is located below the heat insulating sleeve, and the heating block 33 and the heat sink 34 are located below the mounting main seat 131. The outer wall of the mounting main seat 131 is fixedly connected to the first cooling fan 1316 for blowing heat dissipation of the mounting chamber, and the outer side wall of the mounting main seat 131 is fixedly connected to the second cooling fan 1317, the air opening of the second cooling fan 1317 is connected to the air The tube 1318, the air outlet alignment nozzle 32 of the air supply pipe 1318.
[0046] The implementation principle of the printhead for the 3D printer is: the first cooling fan 1316 is increased, and the heat dissipated by the throat 31 is blown away, and the heat accumulation is accumulated in the mounting chamber, reducing the material in the active roller 21 and The driven roller 22 can be thermally pulled by thermal martenst; the coolant of the cooling tank 51 enters the active roller 21 and the fluid passage 24 of the driven roller 22 to the active roller 21 and the driven roller. 22 Cooling and cooling, effectively reducing the possibilities of material being thermally adhered to the proximal surface of the active roller 21 and the driven roller 22, and effectively reducing the possibility of thermal pulling in the active roller 21 and the driven roller 22, the possibility of blocking the material, absorbs heat The coolant is discharged through the second liquid tube 53 to the cooling tank 51 for repetition cycles.
[0047] When the material is required to be charged, the material first passes through the feed guide seat 121, the feed port 1311, and the through hole 1315 of the movable plate 1313, and after the restricted rod 4 is slipped from the limit hole, the second The elastic member 1314 elastic reset force forces the movable plate 1313 to slip a small distance such that the movable plate 1313 applies a certain clamping force to the material, at this time, the pressure sensor disposed in the through hole 1315 induces the force, the signal transmission of the pressure sensor. To the controller in the driving motor, the controller makes the drive motor 232 in the power-off state, improves the operation safety, the staff need to apply a force to the material to pull the material downward, and the lower end of the material passes through the limit slot 25, After the upper inner hole of the throat 31, the free end of the movable sub-seat 132 is flipped, and the restricted rod 41 is inserted after the limit hole, the limit rod 41 abuts the movable plate 1313 reverse slipping, making the activity The through hole 1315 of the plate 1313 and the feed port 1311 are in a positive state. At this time, the pressure sensor is not induced to force, and the drive motor 232 is in a power-on state, so that the printhead can operate normally.
[0048] The above is the preferred embodiment of the present application, and it is not limited to the scope of the application, so it should be included in the scope of the present application. Inside.
