Anti-precipitation nozzle mounting structure

Abstract

The utility model provides an anti-precipitation nozzle mounting structure, which comprises a mounting plate and a plurality of slots arranged on the mounting plate, a printing port is arranged at the bottom of each slot, so that a plurality of spray holes on a nozzle can perform ink-jet printing at the printing port when the nozzle is inserted into the slots, and ink return holes are arranged on two sides of the bottom of each slot. The ink return hole is used for sucking ink at the spray hole; according to the utility model, the anti-blocking effect at the spray hole structure of the printing spray head is improved, and ink leakage waste is avoided.

Description

Technical Field

[0001] The utility model relates to the field of inkjet printing equipment, in particular to an anti-precipitation nozzle installation structure. Background Art

[0002] Piezoelectric ceramic nozzles are a core consumable part used in inkjet printing. They are priced very high and account for a high proportion of the equipment cost. A piezoelectric ceramic nozzle contains many tiny nozzle holes, usually 512 or 1024. Depending on the nozzle model and manufacturer, the diameter of each nozzle hole ranges from tens of microns to hundreds of microns.

[0003] Because the nozzle diameter is very small, it is easy to be blocked by inkjet printing ink and external dust. Once too many nozzles are blocked, the entire nozzle will fail. This phenomenon is particularly obvious in 3D printing, the reasons are:

[0004] ① Inkjet 3D printing equipment requires higher precision and generally uses a nozzle with a small nozzle aperture, which is more likely to be clogged;

[0005] ② Inkjet 3D printing equipment is divided into three categories: 1: Spraying binder onto the powder bed to make the powder bond and form. This type of printing method easily contaminates the powder onto the surface of the nozzle, thereby clogging the nozzle hole (the binder is an organic material, does not contain solid particles, but is photosensitive or thermally cured); 2: Directly spraying ink containing tiny powder particles onto the molding bed, depositing and forming layer by layer. The ink of this type of printing method contains solid particles. Once the ink dries or settles, it is easy to directly clog the nozzle of the entire nozzle; 3: Directly spraying photosensitive resin onto the molding substrate, and curing it by ultraviolet light, etc., but a small part of the ultraviolet light will be reflected by the substrate, causing the photosensitive resin in the nozzle hole to solidify, thereby clogging the nozzle. Utility Model Content

[0006] The utility model aims to provide a nozzle installation structure which improves the anti-clogging effect of the nozzle hole structure of the printing nozzle and prevents the waste of ink leakage.

[0007] In order to solve the above technical problems, the utility model provides an anti-sedimentation nozzle installation structure, including a mounting plate, a plurality of slots opened on the mounting plate, a printing port opened at the bottom of the slot, so that when the nozzle is plugged into the slot, a plurality of nozzle holes on the nozzle can perform inkjet printing from the printing port, and ink return holes are opened on both sides of the bottom of the slot, and the ink return holes are used to suck the ink at the nozzle holes.

[0008] Furthermore, baffles are provided on both sides of the bottom of the slot, and a gap is provided between the baffles and the bottom of the slot, so that the ink at the nozzle hole flows through the gap and enters the ink return hole.

[0009] Furthermore, a liquid collecting groove is provided on one side of the baffle plate close to the slot, and the liquid collecting groove is communicated with the gap.

[0010] Furthermore, a plurality of ink return pipes connected to the suction device are provided on the mounting plate, and the ink return holes are connected to the ink return pipes.

[0011] Furthermore, a plurality of smoke exhaust ports are provided at the bottom of the mounting plate, and a smoke exhaust pipe connected to the plurality of smoke exhaust ports is provided at one side of the mounting plate, so that smoke generated during inkjet printing enters the smoke exhaust pipe from the smoke exhaust ports.

[0012] Furthermore, a plurality of cooling channels are provided inside the mounting plate, and the cooling channels are distributed around the outer circumference of the slot.

[0013] Furthermore, avoidance grooves are provided at corners of the slot.

[0014] The beneficial effect of the utility model is that each nozzle is correspondingly plugged into the slot, so that several nozzles are connected to the mounting plate in a unified manner. When inkjet printing is performed through the nozzle, several nozzle holes on the nozzle spray out printing ink outwardly. At this time, the printing ink is inkjet printed downward from the printing port. When the nozzle is not printing, in order to ensure that the pipeline at the nozzle hole structure is unobstructed, the nozzle holes in the nozzle are continuously pressed to output printing ink through air pressure or the like. At this time, negative pressure suction is generated at the ink return hole, and then the printing ink pressed and output at the nozzle hole is sucked, so that the printing ink does not flow out through the printing port, but is returned along the ink return hole, thereby avoiding waste of printing ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 This utility model Figure 1 A partial enlarged view of point A in the middle.

[0017] Figure 3 This utility model Figure 1 A partial enlarged view of point B in the middle.

[0018] Figure 4 It is a bottom view of the utility model.

[0019] Figure 5 It is a side view of the utility model.

[0020] Figure 6 This utility model Figure 5 Section view along line AA.

[0021] Figure 7 This utility model Figure 6 A partial enlarged view of point C in the middle.

[0022] Figure 8 It is a distribution diagram of the cooling flow channels in the utility model.

[0023] Fig. 9 It is a distribution diagram of the ink return tube in the utility model.

[0024] Figure numerals: 1. Mounting plate; 2. Slot; 3. Print port; 4. Ink return hole; 5. Baffle; 6. Gap; 7. Liquid collection tank; 8. Ink return pipe; 9. Smoke exhaust port; 10. Smoke exhaust pipe; 11. Cooling channel; 12. Avoidance groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0026] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0027] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0028] like Figure 1-9 The utility model provides an anti-sedimentation nozzle installation structure, including a mounting plate 1, a plurality of slots 2 opened on the mounting plate 1, a printing port 3 is opened at the bottom of the slot 2, so that when the nozzle is plugged into the slot 2, a plurality of nozzle holes on the nozzle are inkjet printed from the printing port 3, and ink return holes 4 are opened on both sides of the bottom of the slot 2, and the ink return holes 4 are used to suck ink at the nozzle holes.

[0029] Each nozzle is correspondingly plugged into the slot so that several nozzles are connected to the mounting plate in a unified manner. When inkjet printing is performed through the nozzle, several nozzle holes on the nozzle spray out printing ink outward. At this time, the printing ink is processed by inkjet printing downward from the print port. When the nozzle is not printing, in order to ensure that the pipeline at the nozzle hole structure is unobstructed, the nozzle and nozzle holes are continuously output with printing ink. At this time, negative pressure suction is generated at the ink return hole, and then the printing ink output from the nozzle hole is sucked, so that the printing ink does not pass through the print port, but is returned along the ink return hole, thereby avoiding waste of printing ink.

[0030] The nozzle structure is connected to an ink tank, and the printing ink is transported to the nozzle through the ink tank.

[0031] In one embodiment of the present scheme, the ink sucked from the ink return hole is circulated into the ink tank through the pipeline to avoid ink waste. At the same time, a filter element can be arranged in the circulating flow path to facilitate filtering of the printing ink.

[0032] Preferably, baffles 5 are provided on both sides of the bottom of the slot 2 , and a gap 6 is provided between the baffles 5 and the bottom of the slot 2 , so that the ink at the nozzle hole flows through the gap 6 and enters the ink return hole 4 .

[0033] Specifically, by setting the gap, when suction is generated at the ink return hole, the suction force can be transmitted through the gap position, so that the printed ink flows into the ink return hole along the gap, thereby improving the guiding effect of the ink during the ink return process and avoiding leakage of the ink during the ink return process.

[0034] Preferably, a liquid collecting groove 7 is provided on one side of the baffle plate 5 close to the slot 2 , and the liquid collecting groove 7 is communicated with the gap 6 .

[0035] Specifically, in the process of ink flowing along the gap, a certain amount of ink will gather at the liquid collecting groove, causing tension on the ink surface in the liquid collecting groove, thereby making it easier for the ink at the nozzle to flow to the ink at the liquid collecting groove, thereby cooperating with the ink return hole to improve the ink return effect.

[0036] Preferably, a plurality of ink return tubes 8 connected to the suction device are provided on the mounting plate 1 , and the ink return holes 4 are connected to the ink return tubes 8 .

[0037] Specifically, the ink return tube is connected to the suction device, so that the suction device provides suction force to the ink return tube and the ink return hole, thereby ensuring that the ink returns along the ink return hole, further improving the anti-leakage effect at the nozzle hole.

[0038] Among them, the suction device can adopt a device that provides negative pressure attraction.

[0039] Preferably, a plurality of smoke exhaust ports 9 are provided at the bottom of the mounting plate 1 , and a smoke exhaust pipe 10 connected to the plurality of smoke exhaust ports 9 is provided at one side of the mounting plate 1 , so that smoke generated during inkjet printing enters the smoke exhaust pipe 10 from the smoke exhaust ports 9 .

[0040] Specifically, since part of the ink will generate dust during the inkjet printing process or generate smoke during the cooling process, the smoke is sucked out through the smoke exhaust port so that the smoke will not affect the inkjet printing process, while preventing the smoke from leaking out and causing the air environment around the equipment to deteriorate.

[0041] The smoke exhaust pipe is connected to an external negative pressure device, so that the negative pressure device generates negative pressure suction force on the smoke exhaust pipe and the smoke exhaust port, thereby improving the smoke suction effect.

[0042] Preferably, a plurality of cooling channels 11 are provided inside the mounting plate 1 , and the cooling channels 11 are distributed around the outer circumference of the slot 2 .

[0043] Specifically, the coolant flows along the cooling channel, and then cools the mounting plate, nozzle and other structures through the cooling channel to avoid overheating of the equipment during inkjet printing. At the same time, since the cooling channel is arranged around the outer periphery of the slot, this distribution method can further improve the cooling effect of the cooling channel on the nozzle.

[0044] The cooling channel is connected to an external coolant supply device to ensure that the coolant supply path is complete.

[0045] Preferably, an avoidance groove 12 is provided at a corner of the slot 2 .

[0046] Specifically, in order to avoid interference between the corner position of the nozzle and the corner position of the slot when the nozzle is inserted into the slot, the present invention provides an avoidance groove so that the corner position of the nozzle can be installed through the avoidance groove, thereby effectively protecting the periphery of the nozzle and improving the installation effect between the nozzle and the slot.

[0047] It is worth mentioning that when the nozzle is installed on the mounting plate in this solution, screw fastening, positioning pin fastening, conical surface fastening and other fixing methods can be selected according to different brands of nozzles to adapt to nozzles of various brands and sizes.

[0048] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A precipitation-proof nozzle installation structure, characterized in that: The invention comprises a mounting plate (1), a plurality of slots (2) provided on the mounting plate (1), a printing port (3) provided at the bottom of the slots (2), so that when a nozzle is inserted into the slots (2), a plurality of nozzle holes on the nozzle perform inkjet printing from the printing port (3), and ink return holes (4) are provided on both sides of the bottom of the slots (2), and the ink return holes (4) are used to suck ink from the nozzle holes.

2. The anti-precipitation nozzle installation structure according to claim 1 is characterized in that: Baffles (5) are provided on both sides of the bottom of the slot (2), and a gap (6) is provided between the baffles (5) and the bottom of the slot (2), so that ink at the nozzle hole flows through the gap (6) and enters the ink return hole (4).

3. The anti-precipitation nozzle installation structure according to claim 2 is characterized in that: A liquid collecting groove (7) is provided on one side of the baffle plate (5) close to the slot (2), and the liquid collecting groove (7) is communicated with the gap (6).

4. The anti-precipitation nozzle installation structure according to claim 1 is characterized in that: A plurality of ink return pipes (8) connected to the suction equipment are provided on the mounting plate (1), and the ink return holes (4) are connected to the ink return pipes (8).

5. The anti-precipitation nozzle installation structure according to claim 1 is characterized in that: A plurality of smoke exhaust ports (9) are provided at the bottom of the mounting plate (1), and a smoke exhaust pipe (10) connected to the plurality of smoke exhaust ports (9) is provided on one side of the mounting plate (1), so that smoke generated during inkjet printing enters the smoke exhaust pipe (10) from the smoke exhaust ports (9).

6. The anti-precipitation nozzle installation structure according to claim 1, characterized in that: A plurality of cooling channels (11) are provided inside the mounting plate (1), and the cooling channels (11) are distributed around the outer circumference of the slot (2).

7. The anti-precipitation nozzle installation structure according to claim 1 is characterized in that: An avoidance groove (12) is provided at a corner of the slot (2).

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