Printing head cleaning assembly of 3D printer

Abstract

The utility model discloses a printing head cleaning assembly of a 3D printer, which relates to the technical field of printing head cleaning and comprises a cleaning barrel, a liquid outlet assembly is arranged on the left side of the lower end of the cleaning barrel, a printing head cleaning adjusting mechanism is arranged at the inner end of the cleaning barrel, and two groups of symmetrically arranged printing head clamping adjusting mechanisms are arranged at the upper end of the cleaning barrel. The liquid outlet assembly is used for discharging waste liquid in the cleaning barrel, the printing head cleaning adjusting mechanism is used for brushing the outer circumferential faces of printing heads of different sizes and the inner wall of a printing head discharging hole, and the printing head clamping adjusting mechanism is used for clamping the printing heads of different sizes at different positions. According to the printing head cleaning and adjusting mechanism, raw materials attached to the outer surfaces of printing heads with different outer diameters and raw materials on the discharging inner walls of the printing heads can be cleaned, the applicability of the device is improved, and the overall cleanliness of the printing heads is further improved.

Description

Technical Field

[0001] This utility model relates to the field of printhead cleaning technology, specifically a printhead cleaning component for a 3D printer. Background Technology

[0002] Inkjet 3D printers produce sand molds and cores by spraying adhesive material from an array of printheads, which then bonds the adhesive material to sand particles and stacks them layer by layer.

[0003] For example, utility model patent CN213383028U discloses a printhead cleaning device for an inkjet 3D printer, including a base. A support plate A is provided on one side of the top of the base. A support rod is provided on the top of one side of the support plate A. A retaining ring is provided on one side of the support rod. An syringe is held in the retaining ring. A heating chamber is provided in the syringe. An electric heating wire is screwed in the heating chamber. A microscope is bolted on the other side of the top of the base. A slide rail is provided on the top of the base between the support plate A and the microscope. A rotating disk is provided on the top of the slide rail. A water collection tank is provided on the top of the rotating disk. Support plates B are provided on both sides of the top of the water collection tank. Threaded rods are passed through the pre-reserved threaded holes on the top surface of one side of the support plate B. This utility model has a good cleaning effect and makes it easy to inspect the inside of the nozzle with a microscope to determine whether it is clean. It is suitable for widespread promotion and use. However, it is inconvenient to clean and dissolve the raw materials at the outer end of the print head with different outer diameters. This will cause the device to require additional equipment to clean the outer end of the print head with different sizes, reducing the practicality of the device. Therefore, we propose a print head cleaning component for 3D printers. Utility Model Content

[0004] The purpose of this invention is to provide a printhead cleaning assembly for a 3D printer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a printhead cleaning assembly for a 3D printer, comprising a cleaning tank, a liquid discharge assembly disposed on the lower left side of the cleaning tank, a printhead cleaning adjustment mechanism disposed on the inner end of the cleaning tank, and two sets of symmetrically arranged printhead clamping adjustment mechanisms disposed on the upper end of the cleaning tank. The liquid discharge assembly is used to discharge waste liquid from the cleaning tank, the printhead cleaning adjustment mechanism is used to brush the outer circumferential surface of printheads of different sizes and the inner wall of the printhead discharge hole, and the printhead clamping adjustment mechanism is used to clamp printheads of different sizes at different positions.

[0006] Preferably, the printhead cleaning and adjustment mechanism includes a rotating sleeve, with multiple circumferentially distributed movable columns slidably connected to the outer circumferential surface of the rotating sleeve. A vertical plate is fixedly installed at the inner end of each movable column, and a first brush is provided at the inner end of each vertical plate. A printhead inner wall cleaning brush is fixedly installed at the middle of the upper end of the rotating sleeve. A contact ball is fixedly installed at the outer end of each movable column, and an inner inclined fixing sleeve is slidably connected to the outer end of the contact ball. Multiple evenly distributed mounting blocks are fixedly installed on the upper side of the outer end of the inner inclined fixing sleeve, and the inner wall of the cleaning tank is fixedly installed at the outer end of the mounting blocks.

[0007] Preferably, a long gear is fixedly installed at the middle of the lower end of the rotating sleeve, the lower end of the long gear is rotatably connected to the output end of the first electric push rod through a bearing, a cleaning bucket is fixedly installed at the upper end of the first electric push rod, a short gear is meshed with the side end of the long gear, a rotating shaft is fixedly installed at the lower end of the short gear, a stepper motor output end is fixedly installed at the lower end of the rotating shaft, and a cleaning bucket is fixedly installed at the upper end of the stepper motor.

[0008] Preferably, the printhead clamping adjustment mechanism includes a side plate, a cleaning tank is fixedly installed at the lower end of the side plate, a second electric push rod is fixedly installed at the inner end of the side plate, a clamping arc plate is fixedly installed at the output end of the second electric push rod, and the clamping arc plate is disposed on the upper part of the cleaning tank.

[0009] Preferably, the liquid outlet assembly includes a liquid outlet pipe, which is fixedly connected to the cleaning tank, and a solenoid valve is provided at the outer end of the liquid outlet pipe.

[0010] Preferably, the rotating shaft passes through the cleaning tub, and the outer end of the rotating shaft is rotatably connected to the cleaning tub via a bearing.

[0011] Preferably, a plurality of circumferentially distributed brackets are fixedly installed at the lower end of the cleaning tub, and each bracket is fixedly installed with an anti-slip pad at its lower end.

[0012] Preferably, the lower end of the rotating sleeve has multiple circumferentially distributed liquid inlet holes.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model can clean the raw materials adhering to the outer surface of printheads with different outer diameters and the raw materials on the inner wall of the material outlet through the printhead cleaning and adjustment mechanism, thereby improving the applicability of the device and further improving the overall cleanliness of the printhead.

[0015] 2. This utility model can perform a centering clamping action on print heads of different outer diameters through a print head clamping adjustment mechanism, and the placement position of the print head can be adjusted between two clamping arc plates, which improves the applicability and convenience of the device.

[0016] 3. This utility model can release cleaning fluid that has been used for a long time through the liquid dispensing component, without causing secondary pollution to the subsequent print head by the cleaning fluid. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the printhead cleaning and adjustment mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the liquid outlet component structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the liquid inlet hole structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the printhead clamping and adjusting mechanism of this utility model.

[0022] In the diagram: 1. Cleaning tank; 2. Support; 3. Anti-slip mat; 4. Liquid dispensing assembly; 41. Liquid dispensing pipe; 42. Solenoid valve; 5. Printhead cleaning adjustment mechanism; 51. Rotating sleeve; 52. Moving column; 53. Contact ball; 54. Inner inclined fixing sleeve; 55. Mounting block; 56. Vertical plate; 57. First brush; 58. Printhead inner wall cleaning brush; 59. Long gear; 510. First electric push rod; 511. Short gear; 512. Rotating shaft; 513. Stepper motor; 514. Liquid inlet hole; 6. Printhead clamping adjustment mechanism; 61. Side plate; 62. Second electric push rod; 63. Clamping arc plate. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-5 This utility model provides a technical solution: a printhead cleaning assembly for a 3D printer, including a cleaning tank 1, a liquid discharge assembly 4 disposed on the lower left side of the cleaning tank 1, a printhead cleaning adjustment mechanism 5 disposed on the inner end of the cleaning tank 1, and two sets of symmetrically arranged printhead clamping adjustment mechanisms 6 disposed on the upper end of the cleaning tank 1. The liquid discharge assembly 4 is used to discharge waste liquid in the cleaning tank 1, the printhead cleaning adjustment mechanism 5 is used to brush the outer circumferential surface of printheads of different sizes and the inner wall of the printhead discharge hole, and the printhead clamping adjustment mechanism 6 is used to clamp printheads of different sizes at different positions.

[0025] In this embodiment, the printhead cleaning adjustment mechanism 5 includes a rotating sleeve 51. Multiple circumferentially distributed movable columns 52 are slidably connected to the outer circumferential surface of the rotating sleeve 51. A vertical plate 56 is fixedly installed at the inner end of each movable column 52. A first brush 57 is provided at the inner end of each vertical plate 56. A printhead inner wall cleaning brush 58 is fixedly installed at the middle of the upper end of the rotating sleeve 51. A contact ball 53 is fixedly installed at the outer end of each movable column 52. An inner inclined fixing sleeve 54 is slidably connected to the outer end of the contact ball 53. Multiple evenly distributed mounting blocks 55 are fixedly installed on the upper side of the outer end of the inner inclined fixing sleeve 54. The inner wall of the cleaning tank 1 is fixedly installed at the outer end of the mounting blocks 55.

[0026] Specifically, when it is necessary to adjust the distance between multiple vertical plates 56, the first electric push rod 510 is activated. The output end of the first electric push rod 510 drives the long gear 59 to move upward, which in turn drives the rotating sleeve 51 to move upward. At this time, the rotating sleeve 51 drives the moving column 52, the contact ball 53, the vertical plate 56, the first brush 57, and the inner wall cleaning brush 58 of the print head to move upward. Since the outer end of the contact ball 53 is slidably connected to the inner wall of the inner inclined fixed sleeve 54, during the upward movement of the contact ball 53, the contact ball 53 also drives the moving column 52 to move inward, which in turn drives the vertical plate 56 to move inward. At this time, the distance between the multiple circumferentially distributed first brushes 57 becomes smaller.

[0027] In this embodiment, a long gear 59 is fixedly installed at the middle of the lower end of the rotating sleeve 51. The lower end of the long gear 59 is rotatably connected to the output end of the first electric push rod 510 through a bearing. The cleaning tank 1 is fixedly installed at the upper end of the first electric push rod 510. A short gear 511 is meshed with the side end of the long gear 59. A rotating shaft 512 is fixedly installed at the lower end of the short gear 511. The output end of the stepper motor 513 is fixedly installed at the lower end of the rotating shaft 512. The cleaning tank 1 is fixedly installed at the upper end of the stepper motor 513.

[0028] Specifically, when the stepper motor 513 is started, the output of the stepper motor 513 drives the rotating shaft 512 to rotate, which in turn drives the short gear 511 to rotate. At this time, the short gear 511 drives the long gear 59 to rotate.

[0029] In this embodiment, the printhead clamping adjustment mechanism 6 includes a side plate 61, a cleaning tank 1 is fixedly installed at the lower end of the side plate 61, a second electric push rod 62 is fixedly installed at the inner end of the side plate 61, and a clamping arc plate 63 is fixedly installed at the output end of the second electric push rod 62. The clamping arc plate 63 is located on the upper part of the cleaning tank 1.

[0030] Specifically, the printhead clamping adjustment mechanism 6 can perform centering clamping of printheads with different outer diameters, and the placement of the printhead can be adjusted between the two clamping arc plates 63, improving the applicability and convenience of the device.

[0031] In this embodiment, the liquid outlet assembly 4 includes a liquid outlet pipe 41, which is fixedly connected to the cleaning tank 1, and a solenoid valve 42 is provided at the outer end of the liquid outlet pipe 41.

[0032] Specifically, the liquid dispensing component 4 can release the cleaning fluid that has been used for a long time, preventing the cleaning fluid from causing secondary contamination to the subsequent printhead.

[0033] In this embodiment, the rotating shaft 512 passes through the cleaning tub 1, and the outer end of the rotating shaft 512 is rotatably connected to the cleaning tub 1 through a bearing.

[0034] Specifically, ensure that the rotating shaft 512 does not interfere with the cleaning tub 1 during rotation.

[0035] In this embodiment, a plurality of circumferentially distributed brackets 2 are fixedly installed at the lower end of the cleaning tub 1, and an anti-slip pad 3 is fixedly installed at the lower end of each bracket 2.

[0036] Specifically, the support bracket 2 and the anti-slip pad 3 can be used to provide stable support for the cleaning tub 1.

[0037] In this embodiment, the lower end of the rotating sleeve 51 is provided with a plurality of circumferentially distributed liquid inlet holes 514.

[0038] Specifically, the inlet hole 514 ensures that there is always cleaning fluid inside the rotating sleeve 51.

[0039] Working principle: During use, two printhead clamping adjustment mechanisms 6 can clamp and limit printheads of different sizes on both sides. Simultaneously, the position of the printhead on the clamping arc plate 63 can be adjusted. Next, when it is necessary to adjust the distance between multiple vertical plates 56, the first electric push rod 510 is activated. The output end of the first electric push rod 510 drives the long gear 59 to move upward, thereby driving the rotating sleeve 51 to move upward. At this time, the rotating sleeve 51 drives the moving column 52, contact ball 53, vertical plate 56, first brush 57, and printhead inner wall cleaning brush 58 to move upward. Since the outer end of the contact ball 53 is slidably connected to the inner wall of the inner inclined fixing sleeve 54, during the upward movement of the contact ball 53... The contact ball 53 also drives the moving column 52 to move inward, which in turn drives the vertical plate 56 to move inward. At this time, the distance between the multiple circumferentially distributed first brushes 57 becomes smaller. When the print head needs to be cleaned, the stepper motor 513 is started. The output end of the stepper motor 513 drives the rotating shaft 512 to rotate, which in turn drives the short gear 511 to rotate. At this time, the short gear 511 drives the long gear 59 to rotate, and the long gear 59 drives the rotating sleeve 51 to rotate. The rotating sleeve 51 drives the moving column 52, the contact ball 53, the vertical plate 56, the first brushes 57, and the inner wall cleaning brush 58 of the print head to rotate. At this time, the contact ball 53 still slides with the inner inclined fixed sleeve 54.

[0040] 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 printhead cleaning assembly for a 3D printer, comprising a cleaning tank (1), characterized in that: The cleaning tank (1) is provided with a liquid discharge component (4) on the lower left side, and a printhead cleaning adjustment mechanism (5) is provided at the inner end of the cleaning tank (1). The cleaning tank (1) is provided with two sets of symmetrically arranged printhead clamping adjustment mechanisms (6) at the upper end. The liquid discharge component (4) is used to discharge the waste liquid in the cleaning tank (1). The printhead cleaning adjustment mechanism (5) is used to brush the outer circumferential surface of printheads of different sizes and the inner wall of the printhead discharge hole. The printhead clamping adjustment mechanism (6) is used to clamp printheads of different sizes at different positions.

2. The printhead cleaning assembly for a 3D printer according to claim 1, characterized in that: The printhead cleaning adjustment mechanism (5) includes a rotating sleeve (51). Multiple circumferentially distributed movable columns (52) are slidably connected to the outer circumferential surface of the rotating sleeve (51). A vertical plate (56) is fixedly installed at the inner end of each movable column (52). A first brush (57) is provided at the inner end of each vertical plate (56). A printhead inner wall cleaning brush (58) is fixedly installed at the middle of the upper end of the rotating sleeve (51). A contact ball (53) is fixedly installed at the outer end of each movable column (52). An inner inclined fixing sleeve (54) is slidably connected to the outer end of the contact ball (53). Multiple evenly distributed mounting blocks (55) are fixedly installed on the upper side of the outer end of the inner inclined fixing sleeve (54). The inner wall of the cleaning bucket (1) is fixedly installed at the outer end of the mounting blocks (55).

3. The printhead cleaning assembly for a 3D printer according to claim 2, characterized in that: A long gear (59) is fixedly installed at the middle of the lower end of the rotating sleeve (51). The lower end of the long gear (59) is rotatably connected to the output end of the first electric push rod (510) through a bearing. A cleaning bucket (1) is fixedly installed at the upper end of the first electric push rod (510). A short gear (511) is meshed with the side end of the long gear (59). A rotating shaft (512) is fixedly installed at the lower end of the short gear (511). The output end of a stepper motor (513) is fixedly installed at the lower end of the rotating shaft (512). The cleaning bucket (1) is fixedly installed at the upper end of the stepper motor (513).

4. The printhead cleaning assembly for a 3D printer according to claim 1, characterized in that: The printhead clamping adjustment mechanism (6) includes a side plate (61), a cleaning tank (1) is fixedly installed at the lower end of the side plate (61), a second electric push rod (62) is fixedly installed at the inner end of the side plate (61), a clamping arc plate (63) is fixedly installed at the output end of the second electric push rod (62), and the clamping arc plate (63) is located on the upper part of the cleaning tank (1).

5. The printhead cleaning assembly for a 3D printer according to claim 1, characterized in that: The liquid outlet assembly (4) includes a liquid outlet pipe (41), which is fixedly connected to the cleaning tank (1), and a solenoid valve (42) is provided at the outer end of the liquid outlet pipe (41).

6. The printhead cleaning assembly for a 3D printer according to claim 3, characterized in that: The rotating shaft (512) passes through the cleaning tank (1), and the outer end of the rotating shaft (512) is rotatably connected to the cleaning tank (1) through a bearing.

7. The printhead cleaning assembly for a 3D printer according to claim 1, characterized in that: The cleaning tub (1) is fixedly equipped with a plurality of circumferentially distributed brackets (2), and each bracket (2) is fixedly equipped with an anti-slip pad (3) at its lower end.

8. The printhead cleaning assembly for a 3D printer according to claim 2, characterized in that: The lower end of the rotating sleeve (51) is provided with a plurality of circumferentially distributed liquid inlet holes (514).

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