Automatic protection device for 3D printer nozzle

Abstract

The utility model relates to the technical field of 3D printers, and discloses a 3D printer nozzle automatic protection device which comprises a nozzle structure and a fixing plate, the fixing plate is detachably installed on the nozzle structure, an electric push rod is installed on the fixing plate, the telescopic end of the electric push rod is fixedly connected with a linkage block, and a protection cover is installed on the linkage block. A rack and a support are fixedly connected to the fixing plate, the fixing plate is fixedly connected to the protective cover, the telescopic end of the electric push rod drives the protective cover to move downwards through a linkage block, the spray head structure is contained in the protective cover, the protective cover drives the support to move, and under the action of a gear and the rack, a connecting rod drives a baffle to cover the lower portion of the protective cover. The two effects of automatically relieving protection of the spray head structure in the printing state and automatically protecting the spray head structure after printing are achieved, the spray head structure is effectively prevented from being damaged by external objects, and the service life of the spray head structure is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printers, in particular to an automatic protection device for a nozzle of a 3D printer. Background Art

[0002] 3D printing (3DP) is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses digital model files as the basis, uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. 3D printing is usually achieved using digital technology material printers. It is often used to make models in the fields of mold manufacturing, industrial design, etc., and then gradually used for the direct manufacturing of some products. There are already parts printed using this technology. This technology has been used in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automobiles, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms and other fields.

[0003] The Chinese patent with publication number CN214448548U discloses an automatic protection device for a 3D printer nozzle. It sets a drive assembly, starts the motor, and drives the threaded rod to rotate, so that the two movable plates are close to each other, so that the clamping plate contacts the side wall of the nozzle, thus realizing the installation of the protective cover, which is convenient for the nozzle to protect and improve the service life.

[0004] Although the device can utilize a threaded rod to drive the clamp on the movable plate to clamp the nozzle, and then put the protective cover on the nozzle to protect the nozzle, this protection method requires manual placement of the protection device, and it is difficult to achieve the effect of automatically protecting the nozzle after printing and automatically releasing the protection of the nozzle before printing. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide an automatic protection device for a 3D printer nozzle, which effectively solves the problem that the existing protection device requires manual placement of the protection device, making it difficult to automatically protect the nozzle after printing and automatically release the nozzle protection effect before printing.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a 3D printer nozzle automatic protection device, comprising:

[0007] Nozzle structure.

[0008] A fixing plate is detachably mounted on the nozzle structure, an electric push rod is mounted on the fixing plate, a linkage block is fixedly connected to the telescopic end of the electric push rod, a protective cover is mounted on the linkage block, and a rack is fixedly connected to the fixing plate.

[0009] The support is fixedly connected to the protective cover, the support is rotatably connected to a transmission rod, the transmission rod is fixedly connected to a gear and a connecting rod, and the connecting rod is fixedly connected to a baffle.

[0010] Furthermore, the nozzle structure includes a connector, a throat is fixedly connected to the connector, a heater is installed at the bottom end of the connector, and a nozzle is detachably installed on the heater.

[0011] Furthermore, a mounting groove is provided on the fixing plate, and the throat is located in the mounting groove, and the fixing plate is detachably mounted on the connector by bolts.

[0012] Furthermore, a guide rod is fixedly connected to the fixed plate, a guide block is slidably connected to the guide rod, and the guide block is fixedly connected to the protective cover.

[0013] Furthermore, a rotation groove is provided on the fixing plate, the connecting rod is located in the rotation groove, and a through groove is provided on the protective cover.

[0014] The beneficial effects of the above technical solution are:

[0015] The utility model realizes the coordinated arrangement among the electric push rod, linkage block, protective cover, rack, support, transmission rod, gear, connecting rod and baffle plate, so that the telescopic end of the electric push rod drives the protective cover to move downward through the linkage block, so that the nozzle structure is stored inside the protective cover, and the protective cover drives the support to move, and under the action of the gear and rack, the connecting rod drives the baffle plate to cover the bottom of the protective cover, thereby achieving the two effects of automatically releasing the protection of the nozzle structure in the printing state and automatically protecting it after printing, effectively preventing the nozzle structure from being damaged by external objects and extending the service life of the nozzle structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional Figure 1 ;

[0017] Figure 2 The three-dimensional Figure 2 ;

[0018] Figure 3 It is a schematic diagram of the structure of the utility model under protection status.

[0019] Figure numerals: 1. connector; 2. throat; 3. heater; 4. nozzle; 5. fixing plate; 6. mounting groove; 7. electric push rod; 8. linkage block; 9. protective cover; 10. guide rod; 11. guide block; 12. rotating groove; 13. support; 14. transmission rod; 15. gear; 16. rack; 17. connecting rod; 18. baffle; 19. through groove. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods:

[0021] Reference Figure 1-3 , an automatic protection device for a 3D printer nozzle, comprising a nozzle structure, a fixing plate 5 and a support 13.

[0022] The nozzle structure comprises a connector 1, a throat 2 is fixedly connected to the connector 1, a heater 3 is installed at the bottom end of the connector 1, and a nozzle 4 is detachably installed on the heater 3.

[0023] The fixing plate 5 can be detachably mounted on the nozzle structure. A mounting groove 6 is provided on the fixing plate 5, and the throat 2 is located in the mounting groove 6. The fixing plate 5 can be detachably mounted on the connector 1 by bolts, and the fixing plate 5 can be mounted on the connector 1 by bolts.

[0024] An electric push rod 7 is installed on the fixed plate 5, and the telescopic end of the electric push rod 7 is fixedly connected to a linkage block 8, and a protective cover 9 is installed on the linkage block 8. A rack 16 is fixedly connected to the fixed plate 5. The inner wall of the protective cover 9 is in contact with the heater 3, so that the telescopic end of the electric push rod 7 drives the protective cover 9 to move downward on the heater 3 through the linkage block 8, and the nozzle 4 is stored in the protective cover 9.

[0025] A guide rod 10 is fixedly connected to the fixed plate 5, and a guide block 11 is slidably connected to the guide rod 10, and the guide block 11 is fixedly connected to the protective cover 9, so that the protective cover 9 can drive the guide block 11 to slide on the guide rod 10 when moving, thereby improving the stability of the lifting and lowering movement of the protective cover 9, and can also enhance the resistance of the protective cover 9 to lateral impact.

[0026] The fixing plate 5 is provided with a rotation groove 12, the connecting rod 17 is located in the rotation groove 12, and the protective cover 9 is provided with a through groove 19, which can place the wires installed on the heater 3 in the through groove 19 to prevent the protective cover 9 from moving and causing damage to the wires.

[0027] The support 13 is fixedly connected to the protective cover 9, and a transmission rod 14 is rotatably connected to the support 13. A gear 15 and a connecting rod 17 are fixedly connected to the transmission rod 14, and a baffle 18 is fixedly connected to the connecting rod 17. When the protective cover 9 is lowered to a suitable height, the cooperation of the rack 16 and the gear 15 will also cause the transmission rod 14 to rotate 180 degrees on the support 13, so that the connecting rod 17 drives the baffle 18 to cover the bottom surface of the protective cover 9, so as to close and protect the nozzle 4.

[0028] Working principle: After the nozzle 4 has finished printing, when it is necessary to protect the nozzle 4, the electric push rod 7 is started, so that the telescopic end of the electric push rod 7 drives the protective cover 9 to move downward through the linkage block 8, and the bottom end of the protective cover 9 can be placed below the nozzle 4. At this time, the protective cover 9 will also drive the support 13 to move downward, and under the meshing action of the rack 16 and the gear 15, the transmission rod 14 drives the connecting rod 17 to rotate 180 degrees, and the baffle 18 can be covered on the bottom surface of the protective cover 9, so that the nozzle 4 can be closed and protected. When the nozzle 4 needs to print, the electric push rod 7 is started, so that the electric push rod 7 can be moved downward. The telescopic end of the rod 7 drives the protective cover 9 to move upward through the linkage block 8, and the bottom end of the protective cover 9 can be placed above the nozzle 4. At this time, the protective cover 9 will also drive the support 13 to move upward, and under the meshing action of the rack 16 and the gear 15, the transmission rod 14 drives the connecting rod 17 to rotate 180 degrees. The baffle 18 can be flipped open from the bottom of the protective cover 9 while the protective cover 9 moves upward, achieving the two effects of automatically releasing the protection of the nozzle structure in the printing state and automatically protecting it after printing, effectively preventing external objects from causing damage to the nozzle structure and extending the service life of the nozzle structure.

Claims

1. A 3D printer nozzle automatic protection device, characterized in that: include: Nozzle structure; A fixing plate (5), the fixing plate (5) being detachably mounted on the nozzle structure, an electric push rod (7) being mounted on the fixing plate (5), a linkage block (8) being fixedly connected to the telescopic end of the electric push rod (7), a protective cover (9) being mounted on the linkage block (8), and a rack (16) being fixedly connected to the fixing plate (5); The support (13) is fixedly connected to the protective cover (9); a transmission rod (14) is rotatably connected to the support (13); a gear (15) and a connecting rod (17) are fixedly connected to the transmission rod (14); and a baffle (18) is fixedly connected to the connecting rod (17).

2. The 3D printer nozzle automatic protection device according to claim 1, characterized in that: The nozzle structure comprises a connector (1), a throat (2) is fixedly connected to the connector (1), a heater (3) is installed at the bottom end of the connector (1), and a nozzle (4) is detachably installed on the heater (3).

3. The 3D printer nozzle automatic protection device according to claim 1, characterized in that: The fixing plate (5) is provided with a mounting groove (6), and the throat (2) is located in the mounting groove (6). The fixing plate (5) is detachably mounted on the connector (1) by means of bolts.

4. The 3D printer nozzle automatic protection device according to claim 1, characterized in that: A guide rod (10) is fixedly connected to the fixed plate (5), a guide block (11) is slidably connected to the guide rod (10), and the guide block (11) is fixedly connected to the protective cover (9).

5. The automatic protection device for a 3D printer nozzle according to claim 1, characterized in that: The fixing plate (5) is provided with a rotation groove (12), the connecting rod (17) is located in the rotation groove (12), and the protective cover (9) is provided with a through groove (19).

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