Drum-type high-speed digital ink jet nozzle

Abstract

The utility model relates to the technical field of ink jet nozzles, in particular to a drum-type high-speed digital ink jet nozzle, which comprises a nozzle mounting frame, a nozzle arranged on the nozzle mounting frame, a drum arranged on the inner side of the nozzle mounting frame, an edge gear arranged on the drum, a locking groove arranged on the edge gear and a linear built-in groove arranged on the drum. A linear built-in groove is formed in the nozzle mounting frame, a printing ink conveying hole is formed in the linear built-in groove, an ink jetting hole is formed in the nozzle, a fixing block is arranged on the nozzle mounting frame, a screw hole is formed in the fixing block, a clamping screw rod is arranged on the fixing block, a screw rod cap is arranged on the clamping screw rod, a finger shifting piece is arranged on the screw rod cap, and an oil-resistant sealing sleeve is arranged on the outer wall of the nozzle. According to the nozzle for the drum-type high-speed digital ink-jet printer, each group of whole nozzles which are linearly arranged can be conveniently detached from the drum, the inconvenience of detaching the nozzles one by one is avoided, the convenience of detaching the nozzle for the drum-type high-speed digital ink-jet printer from the drum is improved, and the sealing performance between the outer wall surface of the nozzle and an ink conveying hole is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of inkjet nozzles, in particular to a roller-type high-speed digital inkjet nozzle. Background Art

[0002] The drum-type high-speed digital inkjet printer is an advanced printing device that is widely used in the packaging industry, advertising and publicity, textile printing, industrial marking and coding, personalized products and other fields.

[0003] The working principle of a drum-type high-speed digital inkjet printer is to first input the pattern or text to be printed into the printing system through a computer, then fix the printing paper on the drum, and then, the drum rotates at high speed driven by a motor, driving the printing paper to rotate together. At this time, during the rotation of the drum, the nozzle sprays ink onto the printing paper at a certain frequency. Due to the high-speed rotation of the drum, the nozzle can cover a large printing area in a short time, and during the inkjet process, a preset UV lamp will irradiate the ejected ink, causing it to dry and solidify quickly within a few seconds, thereby achieving high-speed printing effects. In addition, a drum-type inkjet printer is recorded in publication number CN202293658U.

[0004] Currently, the nozzles used in existing drum-type high-speed digital inkjet printers are generally installed directly on the drum shell. After long-term use, the nozzles need to be removed and cleaned. However, there are many groups of nozzles arranged circumferentially and longitudinally installed on the drum shell. The nozzles can only be removed one by one, which greatly reduces the convenience of removing the nozzles used in the drum-type high-speed digital inkjet printer from the drum. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to propose a roller-type high-speed digital inkjet nozzle.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A drum-type high-speed digital inkjet nozzle is designed, comprising a nozzle mount, a nozzle mounted on the nozzle mount, a drum mounted on the inner side of the nozzle mount, an edge gear mounted on the drum, a locking groove formed on the edge gear, a linear internal groove formed on the drum, an ink delivery hole formed in the linear internal groove, an ink ejection hole formed on the nozzle, and a fixing block mounted on the nozzle mount;

[0008] The fixing block is provided with a screw hole, the fixing block is provided with a clamping screw, and the clamping screw is provided with a screw cap;

[0009] The screw cap is provided with a finger-pick piece, and the outer wall of the nozzle is provided with an oil-resistant sealing sleeve.

[0010] Furthermore, the nozzle mounting frame and the linear built-in groove form a group, which is eight groups arranged circumferentially. The front cross-section of the nozzle mounting frame is an arc-shaped structure and is matched with the arc-shaped outer wall surface of the drum.

[0011] Furthermore, the nozzles and ink delivery holes form a group, with each group consisting of nine nozzles arranged longitudinally. The nozzles pass through the nozzle mounting bracket and are plugged into the ink delivery holes.

[0012] Furthermore, the ink jet hole passes through the nozzle, the inner end surface of the nozzle is lower than the ink delivery hole, and the fixing blocks are symmetrically arranged in two pieces and are not higher than the edge gear.

[0013] Furthermore, the locking groove and the edge gear form a group, which are two symmetrical groups in total. Each group of the locking grooves is eight arranged circumferentially, and the clamping screw is threadedly connected to the screw hole and clamped with the locking groove.

[0014] Furthermore, the screw cap is a cylindrical structure as a whole, and the eight finger picks are arranged in a circle and do not contact the nozzle mounting bracket.

[0015] Furthermore, the oil-resistant sealing sleeve is evenly sleeved along the outer wall of the nozzle. The oil-resistant sealing sleeve is made of HNBR hydrogenated nitrile rubber. The oil-resistant sealing sleeve is a cylindrical structure as a whole and has a vertical through-type hollow cavity in the middle.

[0016] The utility model proposes a roller-type high-speed digital inkjet nozzle, which has the following beneficial effects:

[0017] 1. The utility model is provided with a nozzle mounting frame having a fixed block, a clamping screw is threadedly provided on the fixed block, and a screw cap with a finger paddle is provided on the clamping screw. At the same time, a locking groove is provided on the edge gear, and a linear built-in groove with an ink delivery hole is provided on the drum. When the nozzles on the drum need to be removed and cleaned after long-term use, each group of linearly arranged nozzles can be conveniently removed from the drum, avoiding the inconvenience of removing the nozzles one by one, thereby greatly improving the convenience of removing the nozzles from the drum of a drum-type high-speed digital inkjet printer.

[0018] 2. The utility model provides an oil-resistant sealing sleeve structure on the outer wall of the nozzle. When the nozzle is installed on the drum through the nozzle mounting bracket, the oil-resistant sealing sleeve on each nozzle will be squeezed and inserted into the matching ink delivery hole, thereby improving the sealing between the outer wall of the nozzle and the ink delivery hole and effectively avoiding ink leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is an exploded schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a first-perspective perspective schematic diagram of the nozzle mounting bracket of the utility model in a locked and installed state;

[0021] Figure 3 This is a three-dimensional schematic diagram of a nozzle mounting bracket with an oil-resistant sealing sleeve and a clamping screw structure according to the present invention;

[0022] Figure 4 For the utility model Figure 2 A partial enlarged view of the Y position in the middle;

[0023] Figure 5 For the utility model Figure 2 A second perspective perspective diagram of the middle nozzle mounting bracket in the locked installation state.

[0024] In the figure: 1 nozzle mounting bracket; 2 nozzle; 21 ink jet hole; 22 oil-resistant sealing sleeve; 3 fixing block; 31 screw hole; 4 snap screw; 41 screw cap; 42 finger paddle; 5 roller; 51 edge gear; 52 locking groove; 6 linear built-in groove; 61 ink delivery hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Reference Figure 1-5 A drum-type high-speed digital inkjet nozzle includes a nozzle mount 1, a nozzle 2 is provided on the nozzle mount 1, a drum 5 is provided on the inner side of the nozzle mount 1, an edge gear 51 is provided on the drum 5, a locking groove 52 is provided on the edge gear 51, a linear built-in groove 6 is provided on the drum 5, an ink delivery hole 61 is provided in the linear built-in groove 6, an ink ejection hole 21 is provided on the nozzle 2, and a fixing block 3 is provided on the nozzle mount 1;

[0027] The fixing block 3 is provided with a screw hole 31 , the fixing block 3 is provided with a clamping screw 4 , and the clamping screw 4 is provided with a screw cap 41 ;

[0028] The screw cap 41 is provided with a finger paddle 42, and the outer wall of the nozzle 2 is provided with an oil-resistant sealing sleeve 22. The nozzle 2, roller 5, and edge gear 51 recorded in this patent are all commonly used structures of a roller-type high-speed digital inkjet printer, which is the prior art. Some existing structures are not drawn and marked, and there is no need to elaborate. At the same time, you can refer to the relevant prior art content of the roller-type inkjet printer in the publication number CN202293658U recorded in the background technology of this patent. The relevant inkjet printing working principle is also the prior art, and it is also recorded in the background technology of this patent.

[0029] The nozzle mounting bracket 1 and the linear built-in groove 6 form a group, which is a total of eight groups arranged in a circle. The front cross-section of the nozzle mounting bracket 1 is an arc-shaped structure and is matched and sleeved with the arc-shaped outer wall surface of the drum 5. After installation, the arc-shaped inner wall surface of the nozzle mounting bracket 1 is exactly matched and sleeved on the arc-shaped outer wall surface of the drum 5.

[0030] The nozzles 2 and ink delivery holes 61 form a group, with nine nozzles arranged longitudinally in each group. The nozzles 2 pass through the nozzle mount 1 and are plugged into the ink delivery holes 61. The nozzles 2 themselves are directly welded and fixed to the nozzle mount 1 to ensure inkjet stability.

[0031] The inkjet hole 21 passes through the nozzle 2, and the inner end surface of the nozzle 2 is lower than the ink delivery hole 61. The two fixing blocks 3 are symmetrically arranged and are not higher than the edge gear 51, so as to prevent the protruding fixing blocks 3 from affecting the normal meshing rotation effect of the edge gear 51 (existing technology).

[0032] The locking groove 52 and the edge gear 51 form a group, which are two symmetrical groups in total. Each group of the locking grooves 52 is eight arranged in a circle. The clamping screw 4 is threadedly connected to the screw hole 31 and clamped with the locking groove 52. When the clamping screw 4 exits the locking groove 52, the clamping screw 4 is still in a threaded connection state with the screw hole 31, avoiding loss during the later cleaning process.

[0033] The screw cap 41 is a cylindrical structure as a whole, and the eight finger paddles 42 are arranged in a circle and do not contact the nozzle mounting frame 1. The finger paddles 42 can not only be directly turned by hand to rotate the clamping screw 4, which is very convenient. At the same time, they do not contact the nozzle mounting frame 1, avoiding friction between the finger paddles 42 and the nozzle mounting frame 1 when being turned, which affects the smooth turning effect.

[0034] The oil-resistant sealing sleeve 22 is evenly arranged along the outer wall of the nozzle 2. The oil-resistant sealing sleeve 22 is made of HNBR hydrogenated nitrile rubber. The oil-resistant sealing sleeve 22 has a cylindrical structure as a whole and a vertical through-type hollow cavity in the middle. The oil-resistant sealing sleeve 22 made of HNBR hydrogenated nitrile rubber has excellent oil resistance, extrusion sealing, and durability.

[0035] Working method: When the nozzle 2 on the roller 5 needs to be removed and cleaned after long-term use, refer to Figure 2 and Figure 4 Taking a nozzle mounting bracket 1 as an example, first turn the finger paddle 42 counterclockwise to drive the screw cap 41 to rotate counterclockwise, and then drive the clamping screw 4 to rotate counterclockwise. The threaded transmission of the screw hole 31 drives the clamping screw 4 to exit the locking groove 52. Stop turning the finger paddle 42, and the entire group of linearly arranged nozzles 2 can be conveniently removed from the roller 5. Similarly, each group of nozzles 2 can be easily removed from the roller 5 and can be cleaned after removal, avoiding the inconvenience of removing the nozzles 2 one by one, greatly improving the convenience of removing the nozzles 2 from the roller 5 for a drum-type high-speed digital inkjet printer.

[0036] In addition, when the nozzle 2 is installed on the roller 5 through the nozzle mounting bracket 1, the oil-resistant sealing sleeve 22 on each nozzle 2 will be squeezed and inserted into the matching ink delivery hole 61, thereby improving the sealing between the outer wall of the nozzle 2 and the ink delivery hole 61 and effectively avoiding ink leakage.

[0037] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A roller-type high-speed digital inkjet nozzle, comprising a nozzle mount (1), characterized in that: The nozzle mounting frame (1) is provided with a nozzle (2), the inner side of the nozzle mounting frame (1) is provided with a roller (5), the roller (5) is provided with an edge gear (51), the edge gear (51) is provided with a locking groove (52), the roller (5) is provided with a linear built-in groove (6), the linear built-in groove (6) is provided with an ink delivery hole (61), the nozzle (2) is provided with an ink ejection hole (21), and the nozzle mounting frame (1) is provided with a fixing block (3); The fixing block (3) is provided with a screw hole (31), the fixing block (3) is provided with a clamping screw (4), and the clamping screw (4) is provided with a screw cap (41); A finger-pick piece (42) is provided on the screw cap (41), and an oil-resistant sealing sleeve (22) is provided on the outer wall of the nozzle (2).

2. The drum-type high-speed digital inkjet nozzle according to claim 1, characterized in that: The nozzle mounting frame (1) and the linear built-in groove (6) form a group, which is a total of eight groups arranged in a circle. The front view cross section of the nozzle mounting frame (1) is an arc-shaped structure and is matched with the arc-shaped outer wall surface of the roller (5).

3. The drum-type high-speed digital inkjet nozzle according to claim 1, characterized in that: The nozzles (2) and ink delivery holes (61) form a group, with each group consisting of nine nozzles arranged longitudinally. The nozzles (2) pass through the nozzle mounting frame (1) and are plugged into the ink delivery holes (61).

4. The drum-type high-speed digital inkjet nozzle according to claim 1, characterized in that: The ink jet hole (21) passes through the nozzle (2), the inner end surface of the nozzle (2) is lower than the ink delivery hole (61), and the two fixed blocks (3) are symmetrically arranged and no higher than the edge gear (51).

5. The drum-type high-speed digital inkjet nozzle according to claim 1, characterized in that: The locking groove (52) and the edge gear (51) form a group, which are two symmetrical groups in total. Each group of the locking grooves (52) is eight arranged in a circle. The clamping screw (4) is threadedly connected to the screw hole (31) and is clamped to the locking groove (52).

6. The drum-type high-speed digital inkjet nozzle according to claim 1, characterized in that: The screw cap (41) is a cylindrical structure as a whole, and the finger picks (42) are eight arranged in a circle and do not contact the nozzle mounting frame (1).

7. The drum-type high-speed digital inkjet nozzle according to claim 1, characterized in that: The oil-resistant sealing sleeve (22) is evenly sleeved along the outer wall surface of the nozzle (2). The oil-resistant sealing sleeve (22) is made of HNBR hydrogenated nitrile rubber. The oil-resistant sealing sleeve (22) is a cylindrical structure as a whole and has a vertical through-type hollow cavity in the middle.

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