Automatic adjusting mechanism for space between nozzles of digital printing machine

Abstract

The utility model discloses an automatic adjusting mechanism for the nozzle spacing of a digital printing machine, relates to the technical field of digital printing, and solves the problems that the existing digital printing machine needs to reserve multiple types of limiting blocks with different specifications, the replacement takes a long time, the machine emphasizes, plate making is not needed, the production mode is flexible and light, and the production efficiency is low. Meanwhile, the final printing effect can be affected by tiny changes of the gap between the spray head and the paper surface. Comprising a printer body, a head plate arranged in a side port of the printer body and a plurality of nozzles arranged on the head plate at equal intervals; the lifting mechanism is used for adjusting the spray head and comprises a base plate which is arranged at the end opening of the side face of the printing machine body and located on the headstock plate; according to the utility model, the gap between the nozzle and the material can be automatically and accurately controlled and adjusted, so that the distance adjusting precision is higher, various limiting blocks with different specifications do not need to be reserved, the operation and the adjustment are more convenient and flexible, and the working efficiency is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of digital printing, and in particular relates to an automatic adjustment mechanism for the nozzle spacing of a digital printing machine. Background Art

[0002] Digital inkjet printer is a "non-contact with the object" inkjet printing type high-tech digital printing equipment, so it is not restricted by any materials, and can perform color photo-level printing on surfaces such as wood, glass, crystal, metal plates, floor tiles, ceramic tiles, CDs, acrylic, plexiglass, EVA.KT boards, leather, silicone, plastic, PP, PE, PVC, cloth, stickers, stone, etc.

[0003] At present, the height between the nozzle base plate of the digital printing machine and the printed material often needs to be adjusted. In order to accommodate the insertion of materials of different thicknesses, the existing technology is to adjust the gap between the nozzle and the material surface by replacing the limit block. The disadvantage of this technology is that it requires a variety of limit blocks of different specifications to be prepared, and the replacement takes a long time, which runs counter to the flexible and light production method of the machine itself. At the same time, a slight change in the gap between the nozzle and the paper surface will affect the final printing effect.

[0004] Therefore, based on the above problems, we designed an automatic adjustment mechanism for the nozzle spacing of a digital printing machine. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an automatic adjustment mechanism for the spacing between the nozzles of a digital printing machine, which solves the technical problems that the existing digital printing machine needs to prepare a plurality of different specifications of limit blocks, which takes a long time to replace, and runs counter to the flexible and light production mode of the machine itself without plate making, and at the same time, a slight change in the gap between the nozzle and the paper surface will affect the final printing effect.

[0006] To achieve the above-mentioned purpose, according to an embodiment of the first aspect of the utility model, a digital printing machine nozzle spacing automatic adjustment mechanism is provided, comprising a printing machine body, a head plate arranged in a side port of the printing machine body, and a plurality of nozzles equidistantly arranged on the head plate; and further comprising:

[0007] A lifting mechanism, used for adjusting the nozzle, the lifting mechanism comprises a base plate arranged at a side port of the printer body and located on the head plate, a base arranged on the base plate, and a ball screw rotatably arranged in the base and extending through the base plate at the bottom, the head plate being threadedly sleeved on the ball screw;

[0008] A pair of fixing plates are symmetrically arranged on the sides of the printing machine body, and each fixing plate is provided with a fastener for fixing the head plate.

[0009] A further improvement is that a groove is provided through the middle of each fixing plate, and scales are provided on both sides of the groove.

[0010] A further improvement is that sliding hook rods are provided at both side ends of the head plate, which are slidably connected to the outer wall surface of the fixed plate. Each of the sliding hook rods is L-shaped. The sliding hook rods are used to assist the sliding of the head plate, and the sliding distance of the sliding hook rods on the surface of the fixed plate can be observed to control the spacing adjustment accuracy.

[0011] A further improvement is that a stud is provided at the end of each fastener, and threaded holes for fitting the studs are provided on the sides of the head plate for fixing the head plate to avoid reduction in print quality due to equipment / mechanical vibration during operation.

[0012] A further improvement is that a through groove is provided on the base, and a straight limit rod located in the through groove is provided on the head plate, and the straight limit rod is used for limiting the sliding of the head plate.

[0013] A further improvement is that a reducer connected to the main shaft and the end of the ball screw is arranged on the base, and the reducer is driven by an external servo motor.

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

[0015] (1) The utility model drives the ball screw to rotate by the servo motor, thereby driving the head plate and the height of the nozzle to be automatically adjusted up and down. When the head plate is adjusted up and down, the sliding distance of the sliding hook rod on the surface of the fixed plate is observed to accurately control the gap between the head of the machine and the paper surface, and thereby control the accuracy of the spacing adjustment. There is no need to prepare a plurality of limit blocks of different specifications, and the operation and adjustment are more convenient and flexible, and the work efficiency is higher;

[0016] (2) According to the utility model, after the adjustment is completed, a pair of fasteners on the side of the printer body are rotated so that the studs on the fasteners are screwed into the threaded holes of the head plate to fix the head plate. This can effectively avoid the reduction of the print quality of the nozzle due to equipment / mechanical vibration during operation, thereby ensuring the printing effect of the printer. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a schematic diagram of the structure of the headboard and lifting mechanism of the utility model;

[0019] Figure 3 It is a side view structural schematic diagram of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the structure of a fixed plate and a sliding hook rod on one side of a printing machine body.

[0021] Markings in the figure:

[0022] 1. Printing machine body; 11. Head plate; 12. Print head; 2. Lifting mechanism; 21. Base plate; 22. Base; 221. Slot; 222. Linear limit rod; 23. Ball screw; 24. Reducer; 25. Servo motor; 3. Fixing plate; 31. Fastener; 311. Stud; 312. Threaded hole; 32. Groove; 33. Sliding hook rod. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1 As shown, a digital printing machine nozzle spacing automatic adjustment mechanism includes a printing machine body 1, a head plate 11 arranged in a side port of the printing machine body 1, and a plurality of nozzles 12 equidistantly arranged on the head plate 11;

[0025] like Figure 2 and Figure 3 As shown, the lifting mechanism 2 is used for adjusting the nozzle 12. The lifting mechanism 2 includes a base plate 21 disposed at a side port of the printing machine body 1 and located on the head plate 11, a base 22 disposed on the base plate 21, and a ball screw 23 rotatably disposed in the base 22 and extending from the bottom of the base plate 21. The head plate 11 is threadedly sleeved on the ball screw 23;

[0026] The base 22 is provided with a through slot 221, and the front plate 11 is provided with a linear limit rod 222 located in the through slot 221, and the linear limit rod 222 is used for limiting the sliding of the front plate 11;

[0027] The base 22 is provided with a reducer 24 connected to the main shaft and the end of the ball screw 23. The reducer 24 is driven by an external servo motor 25, and the servo motor 25 drives the ball screw 23 to rotate, thereby driving the head plate 11 and the height of the nozzle 12 to automatically adjust up and down, and the gap between the nozzle 12 and the material can be automatically adjusted;

[0028] like Figure 3 and Figure 4As shown, a pair of fixing plates 3 are symmetrically arranged on the side of the printing press body 1, and each fixing plate 3 is provided with a fastener 31 for fixing the head plate 11.

[0029] A groove 32 is provided through the middle of each fixing plate 3, and scales are provided on both sides of the groove 32. A stud 311 is provided at the end of each fastener 31. The side of the head plate 11 is provided with a threaded hole 312 for mounting with the stud 311, which is used to fix the head plate 11, effectively avoiding the reduction of the printing quality of the nozzle 12 due to equipment / mechanical vibration during operation, and ensuring the printing effect of the printing press;

[0030] Among them, sliding hook rods 33 are provided at the two side ends of the head plate 11 and are slidably connected to the outer wall surface of the fixed plate 3. Each sliding hook rod 33 is L-shaped. The sliding hook rod 33 is used to assist the sliding of the head plate 11, and the sliding distance of the sliding hook rod 33 on the surface of the fixed plate 3 can be observed to control the spacing adjustment accuracy.

[0031] like Figures 1 to 4 As shown, in this embodiment, it should be noted that the lifting mechanism 2 in the application document is provided with two groups, which are respectively provided at the ports on both sides of the printer body 1, and each lifting mechanism 2 independently controls the lifting and lowering adjustment of the nozzle 12. In addition, before implementation, the nozzle 12 on the head plate 11 is connected to the barrel in the printer body 1, and the inkjet pump in the barrel draws out the printing ink and sprays it from the nozzle 12, which is the working principle of the existing printer. Other equipment and structures equipped in the existing printer are omitted in this application document.

[0032] It should be noted that the application document only improves the shortcomings of the existing printing machine that the gap between the nozzle 12 and the material surface is adjusted by replacing the limit block to adapt to materials of different thicknesses, which is cumbersome to operate and not convenient and flexible enough, and does not involve improvements in other aspects; the working principle of the automatic adjustment mechanism of the nozzle spacing of a digital printing machine is introduced as follows:

[0033] This technology can automatically adjust the gap between the nozzle 12 and the material. The working process is as follows: the servo motor 25 drives the ball screw 23 to rotate, thereby driving the head plate 11 and the nozzle 12 to automatically adjust the height up and down. When the head plate 11 is adjusted up and down, the sliding distance of the sliding hook rod 33 on the surface of the fixed plate 3 is observed to accurately control the gap between the nozzle 12 and the paper surface, and thereby control the accuracy of the spacing adjustment. There is no need to prepare multiple limit blocks of different specifications, and the operation adjustment is more convenient and flexible, and the work efficiency is higher;

[0034] After the adjustment is completed, by rotating a pair of fasteners 31 on the side of the printer body 1, the studs 311 on the fasteners 31 are screwed into the threaded holes 312 of the head plate 11 to fix the head plate 11, thereby effectively avoiding the reduction in printing quality of the nozzle 12 due to equipment / mechanical vibration during operation, thereby ensuring the printing effect of the printer.

[0035] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. An automatic adjustment mechanism for the spacing between nozzles of a digital printing machine, comprising a printing machine body (1), a head plate (11) arranged in a side port of the printing machine body (1), and a plurality of nozzles (12) arranged on the head plate (11) at equal intervals; characterized in that: Also includes: A lifting mechanism (2) is used for adjusting the nozzle (12), the lifting mechanism (2) comprising a base plate (21) arranged at a side port of the printing machine body (1) and located on the head plate (11), a base (22) arranged on the base plate (21), and a ball screw (23) rotatably arranged in the base (22) and with the bottom extending out of the base plate (21), the head plate (11) being threadedly sleeved on the ball screw (23); A pair of fixing plates (3) are symmetrically arranged on the side of the printing machine body (1), and each of the fixing plates (3) is provided with a fastener (31) for fixing the head plate (11).

2. The automatic adjustment mechanism for nozzle spacing of a digital printing machine according to claim 1, characterized in that: A groove (32) is provided through the middle of each fixing plate (3), and scales are provided on both sides of the groove (32).

3. The automatic adjustment mechanism for nozzle spacing of a digital printing machine according to claim 1, characterized in that: Sliding hook rods (33) slidably connected to the outer wall surface of the fixed plate (3) are provided at both side ends of the head plate (11), and each of the sliding hook rods (33) is L-shaped.

4. The automatic adjustment mechanism for nozzle spacing of a digital printing machine according to claim 3, characterized in that: A stud (311) is arranged at the end of each fastener (31), and a threaded hole (312) for fitting with the stud (311) is provided on the side of the front panel (11).

5. The automatic adjustment mechanism for nozzle spacing of a digital printing machine according to claim 1, characterized in that: The base (22) is provided with a through slot (221) extending therethrough, and the head plate (11) is provided with a straight limit rod (222) located in the through slot (221).

6. The automatic adjustment mechanism for nozzle spacing of a digital printing machine according to claim 1, characterized in that: The base (22) is provided with a reducer (24) connected to the main shaft and the end of the ball screw (23), and the reducer (24) is driven by an external servo motor (25).

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