Adhesive jetting metal 3d printer nozzle water negative pressure sewage suction cleaning head and device

Abstract

The utility model discloses a binder jet metal 3d printer nozzle water negative pressure sewage suction cleaning head and device, including the cleaning head main part, the inside of cleaning head main part is equipped with independent adsorption cavity and the water cavity that sprouts, the upper of cleaning head main part is equipped with negative pressure adsorption mouth and the water outlet that sprouts, negative pressure adsorption mouth with adsorption cavity intercommunication, the water outlet with water cavity intercommunication, one side of cleaning head main part is equipped with the negative pressure pipe joint that communicates with adsorption cavity, negative pressure pipe joint is used for connecting negative pressure pipeline to negative pressure source, the other side of cleaning head main part is equipped with the water supply pipe joint that communicates with water cavity, water supply pipe joint is used for connecting water supply pipeline to water source. The device can utilize the water outlet that sprouts to wet the nozzle surface first, then utilize the negative pressure adsorption mouth to suck all dirt on the nozzle surface, avoid the form of cleaning that directly contacts the nozzle, effectively avoid the residual accumulation of wiping and cleaning, greatly improve the effect of fine cleaning.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, specifically to a water-jetting negative pressure suction cleaning head and device for a binder jetting metal 3D printer nozzle. Background Technology

[0002] In the operation of a binder jet metal 3D printer, the nozzle surface is very close to the working powder surface to achieve the most accurate ink droplet landing. After the ink droplets are ejected onto the working powder surface, some ultrafine powder (particle size approximately 1-5 micrometers) is splashed up. Some dust adheres to the nozzle surface. Using conventional cleaning methods such as scraping the nozzle surface increases the risk of dust being scraped into the nozzle and clogging it. Directly wiping the dust on the printhead surface also increases the chance of scratching the nozzle surface. Therefore, it is desirable to have a method to remove as much dust as possible from the nozzle surface before regular wiping.

[0003] Chinese utility model patent (publication number: CN222608020U) discloses a negative pressure suction cleaning device and a negative pressure suction head for a 3D printer nozzle. It uses negative pressure suction to remove dust and adhesive from the nozzle surface, and then uses a scraper to wipe the nozzle surface. Although this method can reduce the risk of the nozzle surface being scratched by dust and reduce adhesive residue on the nozzle surface, there are still wiping parts that come into direct contact with the nozzle, and there is still a risk of scratching the nozzle. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the prior art by providing a water-jet negative pressure suction cleaning head and device for adhesive jetting metal 3D printer nozzles, which removes any wiping components that directly contact the nozzle surface.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A water-jet negative pressure suction cleaning head for a 3D metal 3D printer nozzle, comprising a cleaning head body, wherein the cleaning head body has an independent adsorption chamber and a water outlet chamber inside, and a negative pressure adsorption port and a water outlet are provided on the top of the cleaning head body, the negative pressure adsorption port communicating with the adsorption chamber, and the water outlet communicating with the water outlet chamber; a negative pressure pipe connector is provided on one side of the cleaning head body communicating with the adsorption chamber, the negative pressure pipe connector being used to connect a negative pressure pipeline to a negative pressure source, and a water supply pipe connector is provided on the other side of the cleaning head body communicating with the water outlet chamber, the water supply pipe connector being used to connect a water supply pipeline to a water source.

[0007] This water spray negative pressure suction cleaning head can perform water spraying and negative pressure suction operations in sequence. The water outlet first wets the surface of the object to be cleaned, and then the negative pressure suction port sucks away all the dirt on the surface of the object to be cleaned. This avoids direct contact with the object to be cleaned, effectively avoids the accumulation of cleaning residue, and greatly improves the effect of fine cleaning.

[0008] Furthermore, the water outlet and the negative pressure adsorption port are arranged one after the other along the path of the nozzle movement, and there are multiple water outlets and multiple negative pressure adsorption ports.

[0009] Furthermore, the vent is a strip-shaped opening with a width not exceeding 1 mm.

[0010] Furthermore, the upper end of the cleaning head body is provided with a pair of arc-shaped raised structures, one of which is provided with the negative pressure adsorption port, and the other is provided with the water outlet.

[0011] A water-jet negative pressure suction cleaning device for the nozzle of a 3D adhesive jetting metal printer includes a movable cleaning frame. The cleaning frame houses the water-jet negative pressure suction cleaning head for the 3D adhesive jetting metal printer, as described above. The cleaning head body is mounted on the inner wall of the cleaning frame. Outside the cleaning frame, a negative pressure source and a water supply tank are connected to the cleaning head body. With this configuration, whenever the cleaning frame moves under the 3D printer nozzle, the water outlet on the cleaning head body 1 sprays water first to wet the nozzle surface. Subsequently, the negative pressure suction port on it sucks away all contaminants such as dust and residual adhesive from the nozzle surface, ensuring the nozzle remains clean before the next printing cycle.

[0012] Furthermore, the water supply tank is connected to a diaphragm pump with a sluice gate, and the diaphragm pump with the sluice gate is connected to the water supply pipe connector on the main body of the cleaning head through a water supply pipeline.

[0013] Furthermore, the water supply pipeline is equipped with a flow regulating valve, which is used to control the height of the water column emerging from the outlet so that the water column moves forward close to the nozzle surface, wetting the entire nozzle surface, so that the negative pressure suction port following behind can suck away the dirt.

[0014] Furthermore, a spray pipe is provided on one side of the cleaning frame, and the spray pipe is provided with several fine spray holes facing the cleaning head body for rinsing the negative pressure adsorption port on the cleaning head body.

[0015] Furthermore, the spray water pipe is installed inside the spray frame, the spray frame is mounted on one side of the cleaning frame via a support, the spray water pipe is connected to the spray diaphragm pump via a spray water connection pipe, and the spray diaphragm pump is connected to the water supply tank.

[0016] Furthermore, the negative pressure source includes a negative pressure bottle and a vacuum pump connected to the negative pressure bottle. The negative pressure bottle is connected to a negative pressure pipe connector on the cleaning head body through a negative pressure pipeline, and a solenoid valve is also provided on the negative pressure pipeline.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This water-spraying negative pressure suction cleaning head can perform water spraying and negative pressure suction operations sequentially. The water outlet first wets the surface of the object to be cleaned, and then the negative pressure suction port sucks away all the dirt on the surface of the object to be cleaned, avoiding direct contact with the object to be cleaned, effectively avoiding the accumulation of cleaning residue, and greatly improving the effect of fine cleaning; 2. The suction chamber and the water outlet chamber are two independent chambers set inside the main body of the cleaning head. One can contain clean water so that the water outlet can spray water, and the other can contain and discharge the adsorbed dirt. The two chambers do not interfere with each other and can work together to play a cleaning role during use; 3. With the setting of this cleaning device, whenever the cleaning frame moves under the 3D printer nozzle, the water outlet on the main body of the cleaning head can spray water first to wet the nozzle surface, and then the negative pressure suction port on it can suck away all the dirt on the nozzle surface, ensuring that the nozzle remains clean before the next printing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the adhesive jetting metal 3D printer nozzle water jet negative pressure suction cleaning head of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the water spray negative pressure suction cleaning device of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the spray pipe of this utility model;

[0021] In the diagram: 1. Cleaning head body; 101. Water outlet; 102. Negative pressure suction port; 103. Water supply pipe connector; 104. Negative pressure pipe connector; 105. Arc-shaped raised structure; 106. Mounting hole; 2. Cleaning frame; 3. Spray head; 4. Water supply tank; 5. Water outlet diaphragm pump; 6. Water supply pipeline; 7. Negative pressure bottle; 8. Negative pressure pipeline; 9. Solenoid valve; 10. Spray water pipe; 1001. Spray nozzle; 11. Spray frame; 12. Spray connecting pipe; 13. Spray diaphragm pump; 14. Support base; 15. Motion module; 16. Connecting plate; 17. Photoelectric switch; 18. Baffle. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "middle," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Example 1

[0024] like Figure 1 As shown, a water-jet negative pressure suction cleaning head for a 3D metal 3D printer nozzle includes a cleaning head body 1. The cleaning head body 1 has an independent adsorption chamber and a water outlet chamber inside. The cleaning head body 1 has a negative pressure adsorption port 102 and a water outlet 101 on its upper part. The negative pressure adsorption port 102 is connected to the adsorption chamber, and the water outlet 101 is connected to the water outlet chamber. One side of the cleaning head body 1 has a negative pressure pipe connector 104 connected to the adsorption chamber. The negative pressure pipe connector 104 is used to connect a negative pressure pipeline to a negative pressure source. The other side of the cleaning head body 1 has a water supply pipe connector 103 connected to the water outlet chamber. The water supply pipe connector 103 is used to connect a water supply pipeline to a water source.

[0025] This water spray negative pressure suction cleaning head can perform water spraying and negative pressure suction operations in sequence. The water outlet 101 first wets the surface of the object to be cleaned, and then the negative pressure suction port 102 sucks away all the dirt on the surface of the object to be cleaned. This avoids the form of cleaning by direct contact with the object to be cleaned, effectively avoids the accumulation of cleaning residue, and greatly improves the effect of fine cleaning.

[0026] The adsorption chamber and the water outlet chamber are two independent chambers located inside the main body of the cleaning head. One chamber can hold clean water so that water can be sprayed from the water outlet, and the other chamber can hold and discharge the adsorbed dirt. The two chambers do not interfere with each other, but work together to perform the cleaning function during use.

[0027] The negative pressure pipe connector 104 and the water supply pipe connector 103 are also two independent connectors, respectively located on two sides of the cleaning head body 1, and respectively connected to the adsorption chamber and the water outlet chamber. By connecting the negative pressure pipe and the water supply pipe respectively, negative pressure can be provided to the negative pressure adsorption port and the dirt can be sucked away, and water can be supplied to the water outlet to spray water to moisten the object to be cleaned.

[0028] Furthermore, the water outlet 101 and the negative pressure suction port 102 are arranged one after the other along the path of the nozzle movement, so as to wet the nozzle before performing the suction operation; there are multiple water outlets 101 and multiple negative pressure suction ports 102.

[0029] Furthermore, the water outlet 101 is a strip-shaped opening with a width not exceeding 1 mm; the negative pressure suction port 102 is also a strip-shaped opening with a width not exceeding 1 mm; preferably, both can be less than 0.5 mm; both are long, narrow slits to precisely wet the nozzle of the printhead and absorb dirt on the nozzle surface, because the nozzle surface of the 3D printer printhead is also a relatively small and precise structure, and such narrow slits can be well matched and used.

[0030] In this embodiment, there are two water outlets 101 and two negative pressure suction ports 102, which are arranged in a one-to-one correspondence. When the cleaning head body 1 moves to the bottom of the nozzle to be cleaned, the water outlet that is very close to the nozzle surface of the nozzle first wets the nozzle surface, and the negative pressure suction port that follows immediately sucks away all the dirt on the nozzle surface.

[0031] Furthermore, the upper end of the cleaning head body 1 is provided with a pair of arc-shaped raised structures 105, one of which is provided with the negative pressure adsorption port 102, and the other is provided with the water outlet 101. The cleaning head body 1 is also provided with a plurality of mounting holes 106, which are used to install the cleaning head body 1 into the cleaning frame 2. Example 2

[0032] like Figure 2 As shown, this embodiment provides a water-jet negative pressure suction cleaning device for the nozzle of a 3D adhesive jetting metal printer, including a movable cleaning frame 2. The cleaning frame 2 is equipped with the water-jet negative pressure suction cleaning head for the nozzle of the 3D adhesive jetting metal printer in Embodiment 1. The main body 1 of the cleaning head is installed on the inner wall of the cleaning frame 2. A negative pressure source and a water supply tank 4 connected to the main body 1 of the cleaning head are also provided outside the cleaning frame 2.

[0033] With this setup, whenever the cleaning frame moves under the 3D printer nozzle, the water outlet 101 on the cleaning head body 1 can spray water first to wet the nozzle surface, and then the negative pressure suction port 102 on it can suck away all the dirt on the nozzle surface, such as dust and residual adhesive, ensuring that the nozzle remains clean before the next printing.

[0034] Furthermore, the water supply tank 4 is connected to a diaphragm pump 5 with a sluice gate, and the diaphragm pump 5 with a sluice gate is connected to the water supply pipe connector 103 on the cleaning head body 1 through the water supply pipe 6.

[0035] The water supply tank 4 can provide water for cleaning, and the diaphragm pump 5 can pump water into the overflow chamber so that water can overflow from the overflow port 101.

[0036] Furthermore, a flow regulating valve is provided on the water supply pipeline 6, which is used to control the height of the water column emerging from the vent 101. For example, when a trigger signal is received, the diaphragm pump opens for a set time, and the flow regulating valve, with its opening adjusted, allows the vent 101 to emit a water column of about 1 mm in height. This water column moves forward close to the nozzle surface, wetting the entire nozzle surface, making it easier for the subsequent negative pressure suction port to suck away dirt.

[0037] Furthermore, the negative pressure source includes a negative pressure bottle 7 and a vacuum pump connected to the negative pressure bottle 7. The negative pressure bottle 7 is connected to the negative pressure pipe connector 104 on the cleaning head body 1 through a negative pressure pipeline 8. The negative pressure pipeline 8 is also equipped with a solenoid valve 9.

[0038] The negative pressure adsorption port 102, immediately following the water outlet, is connected to the negative pressure bottle 7 via a negative pressure pipeline 8. The negative pressure bottle 7 is connected to a vacuum pump, maintaining an internal negative pressure of approximately -50 kPa to -70 kPa at all times. A normally closed solenoid valve 9 connects the negative pressure adsorption port 102 and the negative pressure bottle 7. When a trigger signal is received, the solenoid valve 9 opens for a set time period. During this period, the negative pressure bottle 7 connects to the negative pressure adsorption port 102, and the negative pressure adsorption port 102 moves forward close to the nozzle surface. The negative pressure generated by the negative pressure adsorption port 102 near the nozzle surface draws away dust and adhesive from the nozzle surface.

[0039] Furthermore, in combination Figure 3 As shown, a spray pipe 10 is also provided on one side of the cleaning frame 2. The spray pipe 10 is provided with a plurality of spray holes 1001. The spray holes 1001 face the cleaning head body 1 and are used to rinse the negative pressure adsorption port 102 on the cleaning head body 1.

[0040] Furthermore, the spray water pipe 10 is installed inside the spray frame 11, the spray frame 11 is installed on one side of the cleaning frame 2 via the support base 14, the spray water pipe 10 is connected to the spray diaphragm pump 13 via the spray water connection pipe 12, and the spray diaphragm pump 13 is connected to the water supply tank 4.

[0041] The spray assembly is fixedly installed at the starting point of the cleaning frame 2. Each time the cleaning frame 2 returns to its original position, the spray assembly can spray water onto the cleaning head body 1 through the spray water pipe 10 to rinse the negative pressure adsorption port 102, so as to ensure that the negative pressure adsorption port 102 can also remain clean after each cleaning of the nozzle surface.

[0042] Furthermore, a motion module 15 is provided on the worktable of the 3D printer. One side of the cleaning frame 2 is connected to the slider (not shown in the figure) of the motion module 15 via a connecting plate 16. The motion module 15 is equipped with a photoelectric switch 17, and the slider of the motion module is equipped with a baffle 18 for the photoelectric switch. The motion module 15 can be a linear motion module, and a commercially available mature product is selected. With this arrangement, the cleaning frame 2 can reciprocate so that it moves to below the nozzle of the 3D printer.

[0043] A typical working process of the water jet negative pressure suction cleaning device for the nozzle of this adhesive jetting metal 3D printer is as follows: The nozzle printing carriage completes one layer of printing and returns to the starting point; the motion module of the cleaning device receives instructions from the printing software and moves towards the nozzle; when the slider moves the cleaning frame, the baffle of the photoelectric switch passes through the photoelectric switch, and the cleaning device receives a trigger signal, activating the diaphragm pump connected to the vent and simultaneously activating the solenoid valve connected to the negative pressure bottle, maintaining this for a set time period, such as 3-5 seconds; during this time period, the water emanating from the vent wets the nozzle surface, and the negative pressure suction port sucks away the dirt; after the motion module reaches its end, it returns to the starting point, and the water jet of the spray pipe sprays out a water column to clean the negative pressure suction port; after the nozzle surface is wiped clean, the nozzle carriage can begin printing the next layer.

[0044] 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 water-jet negative pressure suction cleaning head for adhesive jetting metal 3D printer nozzles, characterized in that, The device includes a cleaning head body, which has an independent adsorption chamber and a water outlet chamber inside. A negative pressure adsorption port and a water outlet are located on the top of the cleaning head body. The negative pressure adsorption port communicates with the adsorption chamber, and the water outlet communicates with the water outlet chamber. A negative pressure pipe connector is located on one side of the cleaning head body, communicating with the adsorption chamber. This negative pressure pipe connector is used to connect a negative pressure pipeline to a negative pressure source. A water supply pipe connector is located on the other side of the cleaning head body, communicating with the water outlet chamber. This water supply pipe connector is used to connect a water supply pipeline to a water source.

2. The adhesive jetting metal 3D printer nozzle water jet negative pressure suction cleaning head according to claim 1, characterized in that, The water outlet and the negative pressure suction port are arranged one after the other along the path of the nozzle movement, and there are multiple water outlets and multiple negative pressure suction ports.

3. The adhesive jetting metal 3D printer nozzle water jet negative pressure suction cleaning head according to claim 1, characterized in that, The water outlet is a strip-shaped opening with a width not exceeding 1 mm.

4. The adhesive jetting metal 3D printer nozzle water jet negative pressure suction cleaning head according to claim 1, characterized in that, The upper end of the cleaning head body is provided with a pair of arc-shaped raised structures, one of which is provided with the negative pressure adsorption port, and the other is provided with the water outlet.

5. A water-jet negative pressure suction cleaning device for the nozzle of a metal 3D printer that sprays adhesive, characterized in that... The device includes a movable cleaning frame, within which is a water-jetting negative pressure suction cleaning head for adhesive jetting metal 3D printers as described in any one of claims 1 to 4. The main body of the cleaning head is installed on the inner wall of the cleaning frame, and a negative pressure source and a water supply tank connected to the main body of the cleaning head are provided outside the cleaning frame.

6. The adhesive jetting metal 3D printer nozzle water jet negative pressure suction cleaning device according to claim 5, characterized in that, The water supply tank is connected to a diaphragm pump with a sluice gate, and the diaphragm pump with a sluice gate is connected to the water supply pipe connector on the main body of the cleaning head through a water supply pipeline.

7. The adhesive jetting metal 3D printer nozzle water jet negative pressure suction cleaning device according to claim 6, characterized in that, The water supply pipeline is equipped with a flow regulating valve, which is used to control the height of the water column emerging from the vent.

8. The adhesive jetting metal 3D printer nozzle water jet negative pressure suction cleaning device according to claim 5, characterized in that, A spray pipe is also provided on one side of the cleaning frame. The spray pipe has several fine spray holes facing the cleaning head body and is used to rinse the negative pressure adsorption port on the cleaning head body.

9. The adhesive jetting metal 3D printer nozzle water jet negative pressure suction cleaning device according to claim 8, characterized in that, The spray water pipe is installed inside the spray frame, which is mounted on one side of the cleaning frame via a support base. The spray water pipe is connected to the spray diaphragm pump via a spray water connection pipe, and the spray diaphragm pump is connected to the water supply tank.

10. The adhesive jetting metal 3D printer nozzle water jet negative pressure suction cleaning device according to claim 5, characterized in that, The negative pressure source includes a negative pressure bottle and a vacuum pump connected to the negative pressure bottle. The negative pressure bottle is connected to a negative pressure pipe connector on the cleaning head body through a negative pressure pipeline. A solenoid valve is also provided on the negative pressure pipeline.

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