Spray head structure easy to position and replace for additive manufacturing

Abstract

The utility model discloses an easily positioned and replaced nozzle structure for additive manufacturing, which comprises a nozzle seat, a printing nozzle and a nozzle base plate, the nozzle seat is mounted on the nozzle base plate and provided with a nozzle mounting groove, and the nozzle mounting groove is provided with an adjustable nozzle positioning component. And the printing nozzle is mounted in the nozzle mounting groove, adjusted to a proper position through the adjustable nozzle positioning assembly and clamped. The printing nozzle is clamped on the nozzle seat through the nozzle positioning assembly, so that the printing nozzle is convenient to replace, positioning is accurate during installation, and printing calibration is not needed.

Description

Technical Field

[0001] The utility model belongs to the field of 3D printing, and in particular relates to an easy-to-position and replaceable nozzle structure for additive manufacturing. Background Art

[0002] The multi-nozzle jet technology 3D printer sprays ink droplets on the printing platform through the print nozzle, and then stacks them layer by layer after light curing or heat curing to build a three-dimensional model. Since the printing ink itself has a certain viscosity, if the print nozzle is blocked, it needs to be replaced with a new print nozzle. The existing multi-nozzle jet technology 3D printer needs to repeatedly print and calibrate when replacing the print nozzle, and sometimes even needs to observe the printing results under a microscope to debug the print nozzle position, which is inconvenient to operate. Utility Model Content

[0003] The utility model aims to provide an easy-to-position and replaceable nozzle structure for additive manufacturing, which is calibrated on a tooling before leaving the factory and can be used directly by customers without calibration, which is convenient and quick.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A nozzle structure that is easy to position and replace for additive manufacturing comprises a nozzle seat, a printing nozzle and a nozzle base plate. The nozzle seat is mounted on the nozzle base plate. The nozzle seat is provided with a nozzle mounting slot. The nozzle mounting slot is provided with an adjustable nozzle positioning assembly. The printing nozzle is mounted in the nozzle mounting slot and is adjusted to a suitable position and clamped by the adjustable nozzle positioning assembly.

[0006] The print head is clamped on the print head holder by an adjustable print head positioning assembly. It is calibrated on the tooling before leaving the factory, which makes it easy to replace the print head. It is accurately positioned during installation and does not require printing calibration.

[0007] Furthermore, the nozzle positioning assembly includes a nozzle fixing spring plate, and claws are provided at both ends of the nozzle fixing spring plate. The claws clamp the printing nozzle, and the printing nozzle can move a certain distance in the horizontal direction together with the nozzle fixing spring plate.

[0008] When the print head is installed in the print head installation slot, the clamping claws at both ends of the print head fixing spring plate clamp the print head under the action of the spring plate, which has a limiting effect on the print head.

[0009] Furthermore, the nozzle installation groove is provided with an opening, the opening extends to a certain width in the horizontal direction, and the claw extends out of the opening.

[0010] Only the claw of the nozzle fixing spring plate extends into the nozzle installation slot, which will not affect the installation position of the print nozzle. The opening extends a certain width in the horizontal direction so that the print nozzle can move a certain distance in the horizontal direction together with the nozzle fixing spring plate.

[0011] Furthermore, the nozzle positioning assembly includes a tightening screw, which passes through the nozzle seat and abuts against the printing nozzle to adjust the horizontal position of the printing nozzle.

[0012] The tightening screw is rotated to tighten the print head, and the horizontal position of the print head is adjusted by rotating and adjusting the tightness of the tightening screw.

[0013] Furthermore, the nozzle positioning assembly includes a nozzle positioning spring plate, and the nozzle positioning spring plate is fixed to one side of the nozzle mounting slot. The nozzle positioning spring plate is provided with a protrusion, the protrusion has a certain elasticity, and the protrusion abuts against the printing nozzle.

[0014] The nozzle positioning spring plate is used to limit the horizontal movement of the print nozzle and provide horizontal support for the print nozzle. When the tightening screw is rotated, the nozzle positioning spring plate applies a force to the print nozzle in the opposite direction of the movement of the tightening screw, thereby fixing the position of the print nozzle.

[0015] Furthermore, the nozzle installation slot is provided with a limiting slot, the pressing block is fixed to the limiting slot by screws, and the pressing block abuts against the edge of the print nozzle to press the print nozzle.

[0016] After the print head is fixed, the print head is pressed by a pressing block to prevent the print head from moving.

[0017] Furthermore, the nozzle seat is provided with a plurality of nozzle taper positioning structures and a plurality of nozzle positioning ribs, the nozzle substrate is provided with a substrate taper positioning structure and a nozzle positioning groove, the substrate taper positioning structure matches the nozzle taper positioning structure, and the nozzle positioning rib matches the nozzle positioning groove.

[0018] After the print head is installed, the head seat needs to be installed on the head substrate, and the head positioning rib is installed to the head positioning groove. At the same time, the head taper positioning structure on the head seat and the substrate taper positioning structure on the head substrate position the head seat, and then lock it with screws.

[0019] Furthermore, the nozzle substrate is provided with a nozzle clamping spring plate, the nozzle seat is provided with a clamping opening, and the nozzle clamping spring plate extends into the clamping opening to clamp the nozzle seat downward.

[0020] When the nozzle positioning rib moves toward the nozzle positioning groove, the nozzle clamping spring plate extends into the clamping opening. When the nozzle seat is installed, the nozzle clamping spring plate presses the clamping opening downward to make the printing nozzle close to the nozzle substrate.

[0021] Furthermore, the nozzle seat is provided with a circuit board mounting groove, the nozzle circuit board is installed in the circuit board mounting groove, the nozzle base plate is provided with a nozzle docking plate female end, and the nozzle docking plate male end of the nozzle circuit board matches the nozzle docking plate female end.

[0022] After the male end of the nozzle docking board is connected to the female end of the nozzle docking board, the circuit is automatically connected, eliminating the tedious work of manually plugging in cables.

[0023] Furthermore, the nozzle seat is provided with an ink cartridge installation slot, the ink cartridge is installed in the ink cartridge installation slot, and the ink cartridge is connected to the printing nozzle through an ink tube.

[0024] The ink in the ink cartridge flows into the print head through the ink tube.

[0025] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0026] 1. The nozzle holder, print nozzle and nozzle substrate are produced in a standardized manner. They can be standardized when leaving the factory and can be used directly by customers without calibration.

[0027] 2. The print head is easy to disassemble and can be switched at will without the need for printing calibration.

[0028] 3. After installation, the circuit is automatically connected, eliminating the tedious work of manually plugging in cables, and the operation is easy.

[0029] 4. One nozzle base plate can be installed with multiple nozzle holders for color 3D printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The utility model will be further described below with reference to the accompanying drawings.

[0031] Figure 1 Schematic diagram of the structure after the print head, ink cartridge, and print head circuit board are installed on the print head holder.

[0032] Figure 2 for Figure 1 Schematic diagram of the structure in the other direction.

[0033] Figure 3 This is a schematic diagram of the structure after the ink cartridge and nozzle circuit board are installed on the nozzle seat.

[0034] Figure 4 It is a structural schematic diagram that the nozzle seat is not installed on the nozzle base plate.

[0035] Figure 5 It is a schematic diagram of the structure in which the nozzle seat is installed on the nozzle substrate.

[0036] Figure 6 for Figure 5 Schematic diagram of the structure in another direction. DETAILED DESCRIPTION

[0037] like Figure 1 and Figure 2 The structure shown in the figure is used for easy positioning and replacement of additive manufacturing machines, including a nozzle seat 1, a printing nozzle 2, an ink cartridge 3, and a nozzle circuit board 4. Figure 3 As shown, the nozzle seat 1 is provided with a nozzle mounting slot 5, and the nozzle mounting slot 5 is provided with an adjustable nozzle positioning assembly. The printing nozzle 2 is installed in the nozzle mounting slot 5 and is adjusted to a suitable position and clamped by the adjustable nozzle positioning assembly.

[0038] The nozzle positioning assembly includes a nozzle fixing spring plate 6, a nozzle positioning spring plate 7 and a tightening screw 8. Figure 2 As shown, the nozzle fixing spring plate 6 is fixed to the back of the nozzle installation slot 5, and the nozzle installation slot 5 is provided with an opening 10, and the opening 10 extends a certain width in the horizontal direction. The two ends of the nozzle fixing spring plate 6 are provided with claws 9, and the claws 9 extend from the opening 10 to clamp the print nozzle 2. When the print nozzle 2 is installed in the nozzle installation slot 5, the claws 9 at both ends of the nozzle fixing spring plate 6 clamp the print nozzle 2 under the action of the spring plate, and play a limiting effect on the print nozzle 2. Only the claws 9 of the nozzle fixing spring plate 6 extend into the nozzle installation slot 5, which will not affect the installation position of the print nozzle 2.

[0039] like Figure 3 As shown, a nozzle positioning spring plate 7 is fixed on one side of the nozzle installation groove 5, and the nozzle positioning spring plate 7 is provided with a protrusion 11. When the print nozzle 2 is installed, the tightening screw 8 passes through the side of the nozzle seat 1 and rotates to a suitable position to abut against the print nozzle 2. At this time, the print nozzle 2 abuts against the protrusion 11 of the nozzle positioning spring plate 7. The protrusion 11 has a certain elasticity, and its protrusion shape can be adjusted with the locking degree of the tightening screw 8. The opening 10 extends a certain width in the horizontal direction. Therefore, although the print nozzle 2 is locked by the claw 9, it can be fine-tuned with a certain distance in the horizontal direction together with the nozzle fixing spring plate 6. The tightening screw 8 rotates to tighten the print nozzle 2, and the horizontal position of the print nozzle 2 can be adjusted by rotating and adjusting the tightness of the tightening screw 8. The nozzle positioning spring plate 7 applies a force to the print nozzle 2 in the opposite direction to the moving direction of the tightening screw 8, thereby fixing the position of the print nozzle 2.

[0040] The nozzle mounting slot 5 is provided with a limiting slot 12, and the pressing block 13 is fixed to the limiting slot 12 by screws (not shown in the figure), and the pressing block 13 abuts against the edge of the print nozzle 2 to press the print nozzle 2. After the horizontal position of the print nozzle 2 is adjusted and determined, the pressing block 13 is fixed by screws to press the print nozzle 2 to prevent the position of the print nozzle 2 from moving.

[0041] like Figures 1 to 6 As shown, the nozzle seat 1 is provided with a nozzle taper positioning structure 14 and a nozzle positioning rib 15, and the nozzle substrate 16 is provided with a plurality of substrate taper positioning structures 17 and a plurality of nozzle positioning grooves 18, the substrate taper positioning structure 17 matches the nozzle taper positioning structure 14, and the nozzle positioning rib 15 matches the nozzle positioning groove 18. Multiple nozzle seats 1 can be installed on the nozzle substrate 16 at the same time.

[0042] The nozzle base 1 is provided with an ink cartridge installation slot 19, the ink cartridge 3 is installed in the ink cartridge installation slot 19, and the ink cartridge 3 is connected to the print nozzle 2 through an ink tube 20. The nozzle base 1 is provided with a circuit board installation slot 21, the nozzle circuit board 4 is installed in the circuit board installation slot 21, the nozzle substrate 16 is provided with a plurality of nozzle docking plate female ends 22, and the nozzle docking plate male end 23 of the nozzle circuit board 4 is connected and matched with the nozzle docking plate female end 22.

[0043] like Figure 5 and Figure 6 As shown, after the printing nozzle 2 is installed, the nozzle seat 1 needs to be installed on the nozzle substrate 16, and the nozzle positioning rib 15 is installed to the nozzle positioning groove 18. At the same time, the nozzle taper positioning structure 14 on the nozzle seat 1 and the substrate taper positioning structure 17 on the nozzle substrate 16 position the nozzle seat 1, and then the nozzle seat 1 and the nozzle substrate 16 are locked with screws 26.

[0044] like Figure 5 and Figure 6 As shown, the nozzle substrate 16 is provided with a nozzle clamping spring plate 24, and the nozzle seat 1 is provided with a clamping opening 25. The nozzle clamping spring plate 24 extends into the clamping opening 25 to press the nozzle seat 1 downward. When the nozzle positioning rib 15 moves toward the nozzle positioning groove 18, the nozzle clamping spring plate 24 extends into the clamping opening 25. When the nozzle seat 1 is installed, the nozzle clamping spring plate 24 presses the clamping opening 25 downward to make the print nozzle 2 close to the nozzle substrate 16. After the nozzle docking plate male end 23 is connected to the nozzle docking plate female end 22, the circuit is automatically connected, eliminating the tedious work of manually plugging in the wiring.

[0045] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. An easy-to-position and replaceable nozzle structure for additive manufacturing, characterized in that: The invention comprises a nozzle seat, a printing nozzle and a nozzle substrate, wherein the nozzle seat is installed on the nozzle substrate, the nozzle seat is provided with a nozzle mounting slot, the nozzle mounting slot is provided with an adjustable nozzle positioning assembly, and the printing nozzle is installed in the nozzle mounting slot and is adjusted to a suitable position and clamped by the adjustable nozzle positioning assembly.

2. The easy-to-position and replaceable nozzle structure for additive manufacturing according to claim 1, characterized in that: The nozzle positioning assembly includes a nozzle fixing spring plate, and claws are provided at both ends of the nozzle fixing spring plate. The claws clamp the printing nozzle, and the printing nozzle can move a certain distance in the horizontal direction together with the nozzle fixing spring plate.

3. The easy-to-position and replaceable nozzle structure for additive manufacturing according to claim 2, characterized in that: The nozzle installation groove is provided with an opening, the opening extends a certain width in the horizontal direction, and the claw extends out of the opening.

4. The easy-to-position and replaceable nozzle structure for additive manufacturing according to claim 1, characterized in that: The nozzle positioning assembly includes a tightening screw, which passes through the nozzle seat and abuts against the printing nozzle to adjust the horizontal position of the printing nozzle.

5. The easy-to-position and replaceable nozzle structure for additive manufacturing according to claim 1, characterized in that: The nozzle positioning assembly includes a nozzle positioning spring plate, and the nozzle positioning spring plate is fixed to one side of the nozzle mounting groove. The nozzle positioning spring plate is provided with a protrusion, and the protrusion has a certain elasticity, and the protrusion abuts against the printing nozzle.

6. The easy-to-position and replaceable nozzle structure for additive manufacturing according to claim 1, characterized in that: The nozzle installation slot is provided with a limiting slot, the pressing block is fixed to the limiting slot by screws, and the pressing block abuts against the edge of the print nozzle to press the print nozzle.

7. The easy-to-position and replaceable nozzle structure for additive manufacturing according to claim 1, characterized in that: The nozzle seat is provided with a plurality of nozzle taper positioning structures and a plurality of nozzle positioning ribs, the nozzle substrate is provided with a substrate taper positioning structure and a nozzle positioning groove, the substrate taper positioning structure matches the nozzle taper positioning structure, and the nozzle positioning rib matches the nozzle positioning groove.

8. The easy-to-position and replaceable nozzle structure for additive manufacturing according to claim 7, characterized in that: The nozzle base plate is provided with a nozzle clamping spring plate, the nozzle seat is provided with a clamping opening, and the nozzle clamping spring plate extends into the clamping opening to clamp the nozzle seat downward.

9. The easy-to-position and replaceable nozzle structure for additive manufacturing according to claim 1, characterized in that: The nozzle seat is provided with a circuit board mounting groove, the nozzle circuit board is mounted in the circuit board mounting groove, the nozzle base plate is provided with a nozzle docking plate female end, and the nozzle docking plate male end of the nozzle circuit board matches the nozzle docking plate female end.

10. The easy-to-position and replaceable nozzle structure for additive manufacturing according to claim 1, characterized in that: The nozzle seat is provided with an ink cartridge installation slot, the ink cartridge is installed in the ink cartridge installation slot, and the ink cartridge is connected to the printing nozzle through an ink tube.

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