Printer nozzle assembly

Abstract

The utility model relates to the technical field of printers, in particular to a printer spray head assembly which comprises a spray pipe, a conical spray head is arranged at the bottom end of the spray pipe, two displacement blocks are symmetrically fixed on the outer wall of the spray pipe, a sliding groove is formed in the bottom end of each displacement block, and a threaded rod is rotationally connected in each sliding groove. The end, close to the outer side, of the displacement block is rotationally connected with a rotary knob, the end, close to the outer side, of the threaded rod penetrates through the displacement block to be fixed to the rotary knob, a heating block is slidably connected into the sliding groove, the heating block is in threaded connection with the threaded rod, and a heating plate is fixed to the inner side wall of the heating block. A heating block is arranged to be attached to a conical spray head to heat the conical spray head, during printing, it is avoided that raw materials are cooled and hardened after being sprayed out of the spray head, the raw materials pass through a spraying pipe after being extruded out of the conical spray head, the raw materials are cooled and hardened at an outlet of the spraying pipe, the conical spray head is protected, and meanwhile the heating block can be moved away; and the spraying pipe can be conveniently cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a printer nozzle assembly. Background Art

[0002] 3D printers, also known as three-dimensional printers (3DP), are a type of machine that uses additive manufacturing technology, or rapid prototyping technology. Based on a digital model file, they use adhesive materials such as special wax, powdered metal, or plastic to create three-dimensional objects by printing layers of adhesive materials. Currently, 3D printers are used to manufacture products.

[0003] 3D printers heat the raw materials and extrude them through the nozzle for printing. However, the raw materials will harden when they are cooled during extrusion from the nozzle, which may cause the nozzle to become clogged over time and is difficult to clean. To address the above issues, this application designs a printer nozzle assembly. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the utility model provides a printer nozzle assembly.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a printer nozzle assembly includes a nozzle, a conical nozzle is provided at the bottom end of the nozzle, and two displacement blocks are symmetrically fixed on the outer wall of the nozzle, a slide groove is provided at the bottom end of the displacement block, a threaded rod is rotatably connected in the slide groove, an outer end of the displacement block is rotatably connected to a knob, an outer end of the threaded rod passes through the displacement block and is fixed to the knob, a heating block is slidably connected in the slide groove, the heating block is threadedly connected to the threaded rod, a heating plate is fixed on the inner side wall of the heating block, two heating devices are symmetrically fixed on the outer wall of the nozzle, the heating device is connected to the heating plate, a slot is provided at the lower position of the heating plate, a spray pipe is clamped between the two slots, the top end of the spray pipe contacts the bottom end of the conical nozzle, and a feed port is connected on the outer wall of the nozzle.

[0008] For the purpose of aesthetics and fitting the conical nozzle, the present invention has the following improvements: the two heating blocks are closed to form a cone, and the heating plate is in contact with the outer wall of the conical nozzle.

[0009] In order to prevent the two heating blocks from being dislocated relative to each other, the present invention has an improvement in that a positioning rod and a positioning groove are fixed on one side of the heating block in contact with each other, and the positioning rod and the positioning groove are respectively slidably connected to the positioning groove and positioning rod on the other heating block.

[0010] In order to prevent slipping during rotation, the present invention has an improvement in that an anti-slip groove is provided on the outer wall of the knob.

[0011] In order to make the movement of the heating block more stable, the present invention has the following improvements: the slide groove is set to a cross shape, and the heating block is adapted to the slide groove.

[0012] In order to enable the heating plate to heat the ejection pipe and slow down the clogging speed, the utility model has the following improvements: the ejection pipe is made of metal.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the present invention provides a printer nozzle assembly with the following beneficial effects:

[0015] The printer nozzle assembly heats the conical nozzle by arranging a heating block that fits with the conical nozzle. This prevents the raw material from being cooled and hardened after being ejected from the nozzle during printing. The raw material passes through the ejection pipe after being extruded from the conical nozzle, so that the raw material is cooled and hardened at the outlet of the ejection pipe, thereby protecting the conical nozzle. At the same time, the heating block can be moved away, making it convenient to clean the ejection pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the first main structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the second main structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the first partial structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the second partial structure of the utility model in section.

[0020] In the figure: 1. Nozzle; 2. Conical nozzle; 3. Displacement block; 4. Slide; 5. Threaded rod; 6. Knob; 7. Heating block; 8. Heating plate; 9. Heating device; 10. Slot; 11. Spray pipe; 12. Feed port; 13. Positioning rod; 14. Positioning groove; 15. Anti-slip groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 The top of the nozzle is in contact with the bottom end of the conical nozzle 2, and the outer wall of the nozzle is connected with a feed port 12.

[0023] When the device is in use, the raw material is heated and extruded through the nozzle 1 at the conical nozzle 2. At the same time, the heating plate 8 is attached to the conical nozzle 2, and the heating device 9 is started to increase the temperature of the heating plate 8. After the raw material is extruded at the conical nozzle 2, it is heated by the heating plate 8 to avoid cooling and hardening. At the same time, it is extruded through the ejection pipe 11 for printing. The raw material is cooled and hardened at the outlet of the ejection pipe 11, which avoids clogging the conical nozzle 2. When cleaning is needed, the knob 6 is turned to drive the threaded rod 5 to rotate, and the heating block 7 threadedly connected to the threaded rod 5 moves outward along the slide groove 4. The two heating plates 8 and the heating block 7 are moved away from each other, and the ejection pipe 11 is moved out of the slot 10 for cleaning.

[0024] In actual use, it was found that for the sake of aesthetics and to fit the conical nozzle 2 , in this embodiment, the two heating blocks 7 were closed to form a cone, and the heating plate 8 was in contact with the outer wall of the conical nozzle 2 .

[0025] It was found in actual use that the two heating blocks 7 are prone to misalignment. In order to avoid the above problem, in this embodiment, a positioning rod 13 and a positioning groove 14 are fixed on the contact side of the heating block 7, and the positioning rod 13 and the positioning groove 14 are respectively slidably connected to the positioning groove 14 and the positioning rod 13 on the other heating block 7.

[0026] It is found in actual use that slipping may occur when the knob 6 is turned. In order to avoid the above problem, in this embodiment, an anti-slip groove 15 is provided on the outer wall of the knob 6.

[0027] It was found in actual use that in order to make the heating block 7 more stable and not shake when moving, in this embodiment, the slide groove 4 is set to be cross-shaped, and the heating block 7 is adapted to the slide groove 4.

[0028] In actual use, it was found that in order to enable the heating plate 8 to heat the ejection pipe 11 and slow down the clogging speed, in this embodiment, the ejection pipe 11 is set to be made of metal.

[0029] In order to explain in detail the possible application scenarios, technical principles, specific solutions that can be implemented, and the purpose and effects of this application, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application and are therefore only examples and are not intended to limit the scope of protection of this application.

[0030] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0031] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A printer nozzle assembly, comprising a nozzle (1), characterized in that: The bottom end of the nozzle (1) is provided with a conical nozzle (2), and two displacement blocks (3) are symmetrically fixed on the outer wall of the nozzle (1). A slide groove (4) is provided at the bottom end of the displacement block (3), and a threaded rod (5) is rotatably connected in the slide groove (4). The outer end of the displacement block (3) is rotatably connected to a knob (6), and the outer end of the threaded rod (5) passes through the displacement block (3) and is fixed to the knob (6). A heating block (7) is slidably connected in the slide groove (4), and the heating block (7) is rotatably connected to the threaded rod (6). The threaded rod (5) is threadedly connected, a heating plate (8) is fixed on the inner wall of the heating block (7), two heating devices (9) are symmetrically fixed on the outer wall of the nozzle (1), the heating devices (9) are connected to the heating plate (8), a slot (10) is provided on the lower position of the heating plate (8), a spray pipe (11) is clamped between the two slots (10), the top end of the spray pipe (11) contacts the bottom end of the conical nozzle (2), and a feed port (12) is connected on the outer wall of the nozzle (1).

2. The printer nozzle assembly according to claim 1, characterized in that: The two heating blocks (7) are closed to form a cone, and the heating plate (8) is in contact with the outer wall of the cone-shaped nozzle (2).

3. The printer nozzle assembly according to claim 2, wherein: A positioning rod (13) and a positioning groove (14) are fixed on one side of the heating block (7) in contact with each other, and the positioning rod (13) and the positioning groove (14) are respectively slidably connected with the positioning groove (14) and the positioning rod (13) on the other heating block (7).

4. The printer nozzle assembly according to claim 3, characterized in that: An anti-slip groove (15) is provided on the outer wall of the knob (6).

5. The printer nozzle assembly according to claim 4, characterized in that: The slide groove (4) is configured in a cross shape, and the heating block (7) is adapted to the slide groove (4).

6. The printer nozzle assembly according to claim 5, characterized in that: The ejection pipe (11) is made of metal.

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