Nozzle wiping mechanism of 3D printer

Abstract

The utility model discloses a nozzle wiping mechanism of a 3D printer. The nozzle wiping mechanism comprises a positioning clamping plate used for supporting, a supporting clamping base arranged on the upper portion of the positioning clamping plate, a pen-shaped air cylinder arranged on the rear end face of the supporting clamping base and close to the top, and an air cylinder push rod arranged at the output end of the pen-shaped air cylinder. By arranging the nozzle cleaning device, when raw materials blocked at the bottom of the printer nozzle are cleaned, the pen-shaped air cylinder can drive the positioning scraper and the cleaning rotary head to be quickly and accurately positioned to the bottom and the side part of the printer nozzle through the air cylinder push rod; meanwhile, a stepping motor can rapidly and stably scrape raw materials at the bottom of the printer nozzle in a rotating mode through a positioning scraper, a removing rotating head can remove the raw materials on the side portion of the printer nozzle, and the efficiency and cleanliness of the device for removing the contaminated and blocked raw materials at the bottom and the side portion of the printer nozzle are effectively improved; and the practicability of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of 3D printer equipment technology, specifically to a nozzle wiping mechanism for a 3D printer. Background Technology

[0002] The nozzle wiping mechanism of a 3D printer is a core component that ensures print quality, extends equipment life, and improves printing efficiency. During the printing process, the nozzle orifice may form a "scab" due to the cooling and accumulation of molten material at high temperatures, resulting in uneven material output or blockage. The nozzle wiping mechanism removes the residue through physical contact, ensuring that the nozzle orifice remains unobstructed.

[0003] For example, the utility model patent disclosed in publication number CN220447205U discloses a 3D printer nozzle cleaning mechanism and a 3D printer. The 3D printer nozzle cleaning mechanism can clean the nozzles of a 3D printer and has high safety features. The technical problem to be solved by this utility model is achieved through the following technical means: One aspect of this utility model is to provide a 3D printer nozzle cleaning mechanism, which includes a mounting base for mounting on the 3D printer, comprising two spaced-apart mounting blocks; an elastic member located between the two mounting blocks, with both ends of the elastic member connected to the two mounting blocks respectively; and a wiping member mounted on the elastic member, the wiping member being used to contact the nozzles of the 3D printer. This utility model relates to the technical field of 3D printing.

[0004] Although the aforementioned devices can wipe the nozzles of 3D printers, they only wipe the bottom of the nozzles using columnar wiping components. When encountering sticky printing materials, the cleanliness of the wiping is insufficient. Furthermore, since the devices can only wipe the bottom of the nozzles, they are not convenient for simultaneously wiping the material adhering to the sides of the nozzles, thus reducing the practicality of the wiping process. Therefore, there is an urgent need for a nozzle wiping mechanism for 3D printers to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a nozzle wiping mechanism for a 3D printer to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nozzle erasing mechanism for a 3D printer, comprising a positioning plate for support, a support base located on the upper part of the positioning plate, a pen-shaped cylinder located near the top of the rear end face of the support base, a cylinder push rod located at the output end of the pen-shaped cylinder, and two sets of linear bearings fixedly engaged on the inner end face of the support base near the pen-shaped cylinder.

[0007] The guide slide is slidably engaged with the inner end face of the support bracket via the linear bearing, and two sets of linear sliding shafts are provided on the rear end face of the guide slide. The guide slide is used for support and guidance.

[0008] The wiping nozzle device is elastically slidably engaged with the front of the guide slide. A printer nozzle is provided on the upper part of the wiping nozzle device. The wiping nozzle device is used to wipe and scrape the bottom of the printer nozzle.

[0009] Preferably, the wiping device includes an alignment guide seat, three sets of positioning slides are equidistantly arranged on the top of the rear end face of the alignment guide seat, and a clearance spring is provided on the lower end face of the positioning slides. A guide groove is provided at the bottom of the inner end face of the alignment guide seat. A stepper motor is provided near the rear of the lower end face of the alignment guide seat, and a drive gear is provided at the output end of the stepper motor. A cleaning head is provided on the upper end face of the drive gear. A driven gear is rotatably engaged on the inner end face of the guide groove near the drive gear, and a positioning scraper is fixedly provided at the center of the upper end face of the driven gear. Two sets of guide slides for guiding are provided on the upper end face of the alignment guide seat.

[0010] Preferably, the driving gear meshes with the driven gear through the guide groove, which can effectively improve the stability of transmission between devices.

[0011] Preferably, the upper end face of the positioning scraper is fitted and connected to the bottom of the printer nozzle, and the side of the cleaning head is fitted and connected to the side of the printer nozzle. The positioning scraper can rotate and scrape away the material at the bottom of the printer nozzle, improving the penetration of the material sprayed by the subsequent printer nozzle. At the same time, the cleaning head can rotate and scrape away the side of the printer nozzle, thereby improving the cleanliness of the side of the printer nozzle.

[0012] Preferably, the positioning slide is slidably engaged with the inside of the guide slide, and the bottom of the avoidance spring is fixedly connected to the inside of the guide slide. The slidable engagement of the positioning slide and the guide slide facilitates quick avoidance when the alignment guide moves forward and the printer nozzle is limited. At the same time, the avoidance spring can provide sufficient elasticity for the alignment guide to reset after avoidance.

[0013] Preferably, the guide slide is adapted to the linear bearing via the linear slide shaft and is slidably engaged with the inner end face of the support bracket. The sliding limit of the linear bearing and the linear slide shaft can effectively improve the stability of the sliding displacement of the wiping device at the front of the support bracket.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model, by setting up a wiping device, allows for the removal of material clogging the bottom of the printer nozzle. A pen-shaped cylinder, via a cylinder push rod, drives a positioning scraper and a cleaning head to quickly and accurately position themselves at the bottom and side of the printer nozzle. Simultaneously, a stepper motor uses the positioning scraper to quickly and stably scrape away the material at the bottom of the printer nozzle, while the cleaning head removes material from the side of the nozzle. This effectively improves the efficiency and cleanliness of the equipment in removing contaminated and clogged material from the bottom and sides of the printer nozzle, thereby enhancing the equipment's practicality. Attached Figure Description

[0016] Figure 1 This is an exploded view of the main body of this utility model;

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

[0018] Figure 3 This is an exploded view of the wiping nozzle device of this utility model;

[0019] Figure 4 For the present utility model Figure 3 Enlarged view of a section at point II;

[0020] Figure 5 This is a schematic diagram of the wiping device of this utility model.

[0021] In the diagram: 1-Linear slide shaft, 2-Guide slide, 3-Printer nozzle, 4-Eliminating nozzle device, 5-Cylinder push rod, 6-Support bracket, 7-Positioning plate, 8-Linear bearing, 9-Pen-shaped cylinder, 41-Altering spring, 42-Positioning slide, 43-Stepper motor, 44-Guide slide groove, 45-Drive gear, 46-Clearing head, 47-Driven gear, 48-Guide slide plate, 49-Alignment guide seat, 410-Positioning scraper. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5This utility model provides an embodiment of a nozzle erasing mechanism for a 3D printer, comprising a positioning plate 7 for support, a support base 6 located on the upper part of the positioning plate 7, a pen-shaped cylinder 9 located near the top of the rear end face of the support base 6, a cylinder push rod 5 located at the output end of the pen-shaped cylinder 9, and two sets of linear bearings 8 fixedly engaged on the inner end face of the support base 6 near the pen-shaped cylinder 9.

[0024] The guide slide 2 is slidably engaged with the inner end face of the support seat 6 via the linear bearing 8, and two sets of linear sliding shafts 1 are provided on the rear end face of the guide slide 2. The guide slide 2 is used for support and guidance.

[0025] The wiping device 4 is elastically slidably engaged with the front of the guide slide 2. The printer nozzle 3 is located on the upper part of the wiping device 4. The wiping device 4 is used to wipe and scrape the bottom of the printer nozzle 3.

[0026] The nozzle wiping device 4 includes an alignment guide seat 49. The front opening of the alignment guide seat 49 has a chamfered edge to facilitate the guidance and clearance of the printer nozzle 3. Three sets of positioning slides 42 are equidistantly arranged on the top of the rear end face of the alignment guide seat 49, and a clearance spring 41 is located on the lower end face of the positioning slides 42. A guide groove 44 is formed on the bottom of the inner end face of the alignment guide seat 49. A stepper motor 43 is located near the rear of the lower end face of the alignment guide seat 49, and a [missing information - likely a design feature] is located at the output end of the stepper motor 43. A drive gear 45 is provided, and a cleaning head 46 is provided on the upper end face of the drive gear 45. A driven gear 47 is rotatably engaged on the inner end face of the guide groove 44 near the drive gear 45. A positioning scraper 410 is fixedly provided at the center of the upper end face of the driven gear 47. Two sets of guide slides 48 are provided on the upper end face of the alignment guide seat 49. The guide slides 48 can guide the side of the printer nozzle 3, improving the accuracy of the alignment between the positioning scraper 410 and the printer nozzle 3.

[0027] like Figure 4 The driving gear 45 meshes with the driven gear 47 through the guide groove 44, which can effectively improve the stability of transmission between devices.

[0028] like Figure 4 The upper end face of the positioning scraper 410 is attached to the bottom of the printer nozzle 3, and the side of the cleaning head 46 is attached to the side of the printer nozzle 3. The positioning scraper 410 can rotate and scrape the material at the bottom of the printer nozzle 3, improving the penetration of the material sprayed by the printer nozzle 3 in the future. At the same time, the cleaning head 46 can rotate and scrape the side of the printer nozzle 3, thereby improving the cleanliness of the side of the printer nozzle 3.

[0029] like Figure 3The positioning slide 42 is slidably engaged with the guide slide 2, and the bottom of the avoidance spring 41 is fixedly connected to the inside of the guide slide 2. The slidable engagement between the positioning slide 42 and the guide slide 2 facilitates quick avoidance when the alignment guide 49 moves forward and is limited by the printer nozzle 3. At the same time, the avoidance spring 41 can provide sufficient elastic force for the alignment guide 49 to reset after avoidance.

[0030] like Figure 2 The guide slide 2 is adapted to the linear bearing 8 via the linear slide shaft 1 and is slidably engaged on the inner end face of the support seat 6. The sliding limit of the linear bearing 8 and the linear slide shaft 1 can effectively improve the stability of the sliding displacement of the wiping device 4 at the front of the support seat 6.

[0031] Working Principle: Before use, the operator can position the device to the side of the printer nozzle 3. After the printer nozzle 3 finishes spraying the material, if it is necessary to scrape off the material at the bottom of the printer nozzle 3, the pen-shaped cylinder 9 is activated. The pen-shaped cylinder 9 drives the cylinder push rod 5 forward, which in turn drives the guide slide 2 forward. Subsequently, the guide slide 2 drives the alignment guide 49 forward, which in turn drives the positioning scraper 410 to be positioned at the bottom of the printer nozzle 3. If the displacement causes a limit on the printer nozzle 3, the alignment guide 49 can elastically move downward under the action of the positioning slide 42 and the avoidance spring 41 to avoid rigidly limiting the printer nozzle 3. The stability of the ejected material from the printer nozzle 3 is affected. When the pen-shaped cylinder 9 drives the cylinder push rod 5 to its limit, the bottom opening of the printer nozzle 3 is aligned with the coaxial center of the positioning scraper 410, and the side of the printer nozzle 3 is in contact with the side wall of the cleaning head 46. At this time, the stepper motor 43 starts and drives the drive gear 45 and the cleaning head 46 to rotate. At the same time, the drive gear 45 drives the driven gear 47 to rotate. The driven gear 47 drives the positioning scraper 410 to quickly rotate and scrape away the material blocking the bottom of the printer nozzle 3. Meanwhile, the cleaning head 46 can quickly scrape away the material remaining on the side of the printer nozzle 3, thereby ensuring the cleanliness of the side and bottom of the printer nozzle 3.

[0032] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nozzle-wiping mechanism for a 3D printer, comprising a positioning plate (7) for support, a support base (6) disposed on the upper part of the positioning plate (7), a pen-shaped cylinder (9) disposed near the top of the rear end face of the support base (6), and a cylinder push rod (5) disposed at the output end of the pen-shaped cylinder (9), wherein two sets of linear bearings (8) are fixedly engaged on the inner end face of the support base (6) near the pen-shaped cylinder (9), characterized in that: The guide slide (2) is slidably engaged with the inner end face of the support bracket (6) via the linear bearing (8), and two sets of linear slide shafts (1) are provided on the rear end face of the guide slide (2). The guide slide (2) is used for support and guidance. The wiping nozzle device (4) is elastically slidably engaged with the front of the guide slide (2). A printer nozzle (3) is provided on the upper part of the wiping nozzle device (4). The wiping nozzle device (4) is used to wipe and scrape the bottom of the printer nozzle (3).

2. The nozzle wiping mechanism of a 3D printer according to claim 1, characterized in that: The wiping device (4) includes an alignment guide seat (49). Three sets of positioning slides (42) are equidistantly arranged on the top of the rear end face of the alignment guide seat (49), and a clearance spring (41) is provided on the lower end face of the positioning slides (42). A guide groove (44) is provided at the bottom of the inner end face of the alignment guide seat (49). A stepper motor (43) is provided near the rear of the lower end face of the alignment guide seat (49), and a clearance spring (41) is provided on the lower end face of the stepper motor (43). The output end of the device is provided with a drive gear (45), and a cleaning head (46) is provided on the upper end face of the drive gear (45). The inner end face of the guide groove (44) is rotatably engaged with a driven gear (47) near the drive gear (45), and a positioning scraper (410) is fixedly provided at the center of the upper end face of the driven gear (47). The upper end face of the alignment guide seat (49) is provided with two sets of guide slide plates (48) for guiding.

3. The nozzle wiping mechanism of a 3D printer according to claim 2, characterized in that: The driving gear (45) meshes with the driven gear (47) through the guide groove (44).

4. The nozzle wiping mechanism of a 3D printer according to claim 2, characterized in that: The upper end face of the positioning scraper (410) is fitted and connected to the bottom of the printer nozzle (3), and the side of the cleaning head (46) is fitted and connected to the side of the printer nozzle (3).

5. The nozzle wiping mechanism of a 3D printer according to claim 2, characterized in that: The positioning slide (42) is slidably engaged with the inside of the guide slide (2), and the bottom of the avoidance spring (41) is fixedly connected to the inside of the guide slide (2).

6. The nozzle wiping mechanism of a 3D printer according to claim 2, characterized in that: The guide slide (2) is adapted to the linear bearing (8) via the linear slide shaft (1) and is slidably engaged with the inner end face of the support seat (6).

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