Multi-printing-head splicing device

Abstract

The utility model discloses a multi-printing-head splicing device. The multi-printing-head splicing device comprises an ink supply device, a shunting block assembly connected with the ink supply device, and a printing head splicing assembly connected with the shunting block assembly, a plurality of secondary ink boxes are arranged in the ink supply device; the printing head splicing assembly comprises a mounting base plate, a plurality of adjusting grooves are formed in the mounting base plate, printing head supports are movably embedded in the adjusting grooves, and printing heads are movably embedded in the adjusting grooves through the printing head supports. And the secondary ink box is connected with the printing head in the printing head splicing assembly through the shunting block assembly. According to the multi-printing-head splicing device disclosed by the utility model, the parallelism among the multiple printing heads, the interval of spraying holes among the printing heads and the height error among the printing heads are precisely adjusted, and the influence on the aspects of eliminating splicing traces generated by splicing the printing heads, improving the printing DPI and improving the printing yield is profound.

Description

Technical Field

[0001] The utility model relates to the technical field of inkjet printing, in particular to a multi-printhead splicing device. Background Art

[0002] In the existing inkjet printing industry, the length of a single printhead cannot meet the requirements of full-surface printing of large-size products or improving the printing DPI, so the need for multi-printhead splicing emerges. For multi-printhead splicing printing, strict control is required for the parallelism between printheads, the interval between nozzle holes of printheads, and the height error between printheads. When multi-nozzles are spliced in the prior art, if the hole gap between two nozzles and the parallelism of the two nozzles are not accurately controlled, the printed ink will have obvious splicing marks, which has an adverse impact on printing.

[0003] Therefore, it is necessary to develop a mechanism that can keep the multi-printhead splicing in a good state. Summary of the Utility Model

[0004] The utility model overcomes the deficiencies of the prior art and provides a multi-printhead splicing device; it realizes precise adjustment of the parallelism between multi-printheads, the interval between nozzle holes of printheads, and the height error between printheads, and has a profound impact on eliminating the splicing marks generated by printhead splicing, improving the printing DPI, and enhancing the printing yield.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a multi-printhead splicing device, including: an ink supply device, a flow splitting block assembly connected to the ink supply device, and a printhead splicing assembly connected to the flow splitting block assembly; several secondary ink cartridges are arranged in the ink supply device; the printhead splicing assembly includes a mounting substrate, several adjustment slots are arranged on the mounting substrate, a printhead bracket is movably embedded in the adjustment slots, and the printhead is movably embedded in the adjustment slots through the printhead bracket; the secondary ink cartridges are connected to the printheads in the printhead splicing assembly through the flow splitting block assembly.

[0006] In a preferred embodiment of the utility model, the printhead is assembled and positioned with the printhead bracket through a positioning pin; and the printhead bracket is limited in the adjustment slot of the mounting substrate by several groups of oppositely arranged adjusting setscrews.

[0007] In a preferred embodiment of the utility model, an adjusting plate extending outward is arranged on the printhead bracket; several micrometers and spring plungers are arranged on the mounting substrate outside the adjustment slots, and the micrometers and spring plungers respectively abut against both sides of the adjusting plate, and a limiting plate is also arranged on the mounting substrate, and the spring plunger is located between the limiting plate and the adjusting plate.

[0008] In a preferred embodiment of the utility model, the diverter block assembly includes a diverter block mounting sheet metal, on which a diverter block is arranged, the inlet of the diverter block is connected to the ink outlet bracket of the secondary ink cartridge through a manual ball valve assembly, and the outlet of the diverter block is connected to the feed port of the print head through an ink tube joint.

[0009] In a preferred solution of the utility model, the inclination of the print head can be adjusted by rotating the top screw.

[0010] In a preferred solution of the utility model, the print head and the print head bracket are positioned by positioning pins.

[0011] In a preferred solution of the utility model, the print head splicing assembly also includes a spring plunger mounting block, a screw micrometer mounting block, and a print head bracket adjustment block; the spring plunger mounting block and the screw micrometer mounting block are respectively fixed on the print head assembly mounting base plate.

[0012] In a preferred solution of the utility model, a thread is provided in the middle of the spring plunger mounting block, and the spring plunger is installed in the middle of the spring plunger mounting block through the thread; a through hole is provided in the micrometer mounting block, and the micrometer is installed on the micrometer mounting block through a through-hole clamp; and the print head bracket adjustment block is fixed to the print head bracket.

[0013] In a preferred embodiment of the utility model, a method for adjusting a multi-print head splicing device comprises the following steps: by rotating the left adjustment screw to the right, the left side of the print head bracket will tilt upward, and by rotating the left adjustment screw to the left, the left side of the print head bracket will reset downward, thereby realizing the function of adjusting the inclination of the print head on both sides by single-sided operation; similarly, by rotating the right adjustment screw to the right, the right side of the print head bracket will tilt upward, and by rotating the right adjustment screw to the left, the right side of the print head bracket will reset downward.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses a multi-print head splicing device, which can achieve precise adjustment of the parallelism between multiple print heads, the spacing between nozzles between print heads, and the height error between print heads, and has a far-reaching impact on eliminating splicing marks caused by print head splicing, improving printing DPI, and improving printing yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a front view structural schematic diagram of a multi-print head splicing device of the present application;

[0018] Figure 2 It is a schematic diagram of the axial structure of a multi-print head splicing device of the present application;

[0019] Figure 3 It is a front view structural schematic diagram of an ink supply device in a multi-printhead splicing device of the present application;

[0020] Figure 4 It is a front view structural schematic diagram of a flow splitting block assembly in a multi-printhead splicing device of the present application;

[0021] Figure 5 It is an axonometric view structural schematic diagram of a printhead splicing assembly in a multi-printhead splicing device of the present application;

[0022] Figure 6 It is a front view structural schematic diagram of a printhead splicing assembly in a multi-printhead splicing device of the present application;

[0023] Figure 7 is the present application Figure 6 A - A sectional view structural schematic diagram in;

[0024] Figure 8 It is a top view structural schematic diagram of a printhead splicing assembly in a multi-printhead splicing device of the present application;

[0025] Figure 9 It is a structural schematic diagram of a pressure detection component in a multi-printhead splicing device of the present application;

[0026] Figure 10 It is a structural schematic diagram of a mounting substrate in a multi-printhead splicing device of the present application;

[0027] Figure 11 is a structural schematic of a printhead bracket in a multi-printhead splicing device of the present application Figure 1 ;

[0028] Figure 12 is a structural schematic of a printhead bracket in a multi-printhead splicing device of the present application Figure 2 ;

[0029] Figure 13 It is a partial enlarged structural schematic diagram of a printhead splicing assembly in a multi-printhead splicing device of the present application;

[0030] Figure 14 It is a sectional view structural schematic diagram of a printhead splicing assembly in a multi-printhead splicing device of the present application;

[0031] Figure 15 It is a structural schematic diagram of the fixed assembly of a printhead bracket adjustment block and a printhead bracket in a multi-printhead splicing device of the present application;

[0032] Among them, 1 - ink supply device, 11 - ink cartridge support, 12 - secondary ink cartridge, 2 - flow splitting block assembly, 21 - flow splitting block mounting sheet metal, 22 - manual ball valve, 23 - flow splitting block, 24 - ink tube joint, 3 - print head splicing assembly, 31 - mounting substrate, 311 - spring plunger mounting block, 312 - micrometer mounting block, 32 - print head bracket, 321 - print head bracket adjustment block, 33 - micrometer, 34 - print head, 35 - spring plunger, 36 - adjustment setscrew, 4 - pressure detection assembly, 41 - sensor mounting plate, 42 - pressure sensor, A - ideal plane 1, B - ideal plane 2. Detailed implementation mode

[0033] The technical solution of the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present utility model and the specific features in the embodiments are detailed descriptions of the technical solution of the present utility model, rather than limitations on the technical solution of the present utility model. Without conflict, the technical features in the embodiments of the present utility model and the embodiments can be combined with each other.

[0034] The term "and / or" only describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " generally represents an "or" relationship between the front and rear associated objects. Embodiment 1

[0035] As Figures 1 - 12 shown, a multi - print - head splicing device is characterized by comprising: an ink supply device 1, a flow splitting block assembly 2 connected to the ink supply device 1, and a print head splicing assembly 3 connected to the flow splitting block assembly 2.

[0036] Specifically, a number of secondary ink cartridges 12 are provided in the ink supply device 1.

[0037] Specifically, the flow splitting block assembly 2 includes a flow splitting block mounting sheet metal 21. A flow splitting block 23 is provided on the flow splitting block mounting sheet metal 21. The inlet of the flow splitting block 23 is assembled and connected to the ink outlet bracket of the secondary ink cartridge 12 through a manual ball valve 22, and the outlet of the flow splitting block 23 is connected to the feed port of the print head 34 through an ink tube joint 24. Among them, the manual ball valve 22 adopts the on - off structure in the prior art, and the selection of specific models and structures will not be listed and described in detail one by one here.

[0038] Specifically, the printhead splicing assembly 3 includes a mounting substrate 31. A number of adjustment slots are provided on the mounting substrate 31. A printhead bracket 32 is movably embedded in the adjustment slots, and the printhead 34 is movably embedded in the adjustment slots through the printhead bracket 32. The printhead 34 is assembled and positioned with the printhead bracket 32 through a positioning pin. And the printhead bracket 32 is limited in the adjustment slots of the mounting substrate 31 by a number of groups of oppositely arranged adjusting setscrews 36. An adjustment plate extending outward is provided on the printhead bracket 32. A number of micrometers 33 and spring plungers 35 are provided on the mounting substrate 31 outside the adjustment slots. The micrometers 33 and the spring plungers 35 respectively abut against both sides of the adjustment plate. And a limit plate is further provided on the mounting substrate 31. The spring plunger 35 is located between the limit plate and the adjustment plate. The printhead splicing assembly 3 further includes a spring plunger mounting block 311, a micrometer mounting block 312, and a printhead bracket adjustment block 321. The spring plunger mounting block 311 and the micrometer mounting block 312 are respectively fixed on the printhead assembly mounting substrate 31. A thread is provided in the middle of the spring plunger mounting block 311. The spring plunger 35 is installed in the middle of the spring plunger mounting block 311 through the thread. The micrometer mounting block 312 is provided with a through hole. The micrometer 33 is installed on the micrometer mounting block 312 through the through hole by clamping. The printhead bracket adjustment block 321 is fixed to the printhead bracket 32. When the right-handed micrometer 33 is rotated, the printhead bracket 32 moves to the left. When the left-handed micrometer 33 is rotated, the printhead bracket 32 is reset to the right under the thrust of the spring plunger 35. The micrometer 33 uses a product in the prior art, which can mainly meet the requirements of screw micrometry or screw fine adjustment in this embodiment. The selection of specific models and structures will not be listed and described in detail here.

[0039] Specifically, the secondary ink cartridge 12 is connected to the connection printhead 34 in the printhead splicing assembly 3 through the shunt block assembly 2. The pressure detection assembly 4 can be installed above the secondary ink cartridge 12, and has no direct connection with the printhead splicing assembly 3 and the shunt block assembly 2. Embodiment 2

[0040] An adjustment method for a multi-printhead splicing device includes the following steps:

[0041] When the left adjusting setscrew 36 is rotated clockwise, the left side of the printhead bracket 32 will tilt upward. When the left adjusting setscrew 36 is rotated counterclockwise, the left side of the printhead bracket 32 will be reset downward, so as to realize the function of single-side operation and double-side adjustment of the inclination of the printhead 34. Similarly, when the right adjusting setscrew 36 is rotated clockwise, the right side of the printhead bracket 32 will tilt upward. When the right adjusting setscrew 36 is rotated counterclockwise, the right side of the printhead bracket 32 will be reset downward.

[0042] The print head 34 and the print head support 32 are positioned by positioning pins to ensure that the position of the print head support 32 relative to the print head 34 remains unchanged each time the print head 34 is replaced; the distance between the print heads 34 is adjusted. The micrometer 33 and the spring plunger 35 are connected to the print head assembly mounting substrate 31. When the micrometer 33 is rotated clockwise, the measuring rod of the micrometer 33 acts on the print head support 32 to the left, and then the print head support 32 is finely adjusted to the left; when the micrometer 33 is rotated counterclockwise, the spring plunger 35 acts on the print head support 32 to the right, and the print head support 32 is finely adjusted to the right.

[0043] Specifically, the ideal plane B of the print head 34 is parallel to the ideal plane A of the print head support 32; the ideal planes A of several print head supports 32 are parallel to each other. The print head 34 and the print head support 32 are relatively fixed using positioning pins to ensure that the positional relationship of several print heads 34 is generally parallel. Since the required parallelism is relatively high, to further improve the parallelism accuracy, the adjusting screw 36 needs to be adjusted through the above steps to achieve the parallelism between the print heads 34.

[0044] Working principle:

[0045] First, the print head 34 and the print head support 32 are positioned by positioning pins to ensure that the position of the print head support 32 relative to the print head 34 remains unchanged each time the print head 34 is replaced. At this time, the ideal plane B of the print head 34 is parallel to the ideal plane A of the print head support 32 (the parallelism is ensured by the tolerance accuracy of the print head support 32 itself, as shown in Figure 8 、 Figures 10 - 12 ).

[0046] Secondly, it is necessary to ensure that the reference planes A of the seven print head supports 32 are parallel to each other. By machining, the parallelism of the reference plane C and the reference plane D of the print head assembly mounting substrate 31 is ensured. The reference planes A of the seven print head supports 32 are respectively aligned with the reference plane C and the reference plane D, thus ensuring the parallelism of the reference planes A of the seven print head supports 32. Since the print head 34 and the print head support 32 are relatively fixed using positioning pins, the positional relationship of the seven print heads 34 can be ensured to be generally parallel. Since the required parallelism is relatively high, to further improve the parallelism accuracy, the adjusting screw 36 needs to be adjusted through the above steps to achieve the parallelism between the seven print heads 34.

[0047] To achieve Function 3, it is necessary to adjust the distance between the print heads 34 on the basis of Function 2. Since the nozzle pitch of the print head 34 is very small, a micrometer 33 is required. The micrometer 33 and the spring plunger 35 are connected to the print head assembly mounting substrate 31. When the micrometer 33 is rotated clockwise, the measuring rod of the micrometer 33 acts on the print head support 32 to the left, and then the print head support 32 is finely adjusted to the left; when the micrometer 33 is rotated counterclockwise, the spring plunger 35 acts on the print head support 32 to the right, and the print head support 32 is finely adjusted to the right.

[0048] To implement Function 3, it is necessary to adjust the spacing between the print heads 34 on the basis of Function 2. Since the nozzle spacing of the print heads 34 is very small, a micrometer 33 needs to be used. The micrometer 33, the spring plunger 35 are connected to the print head assembly mounting substrate 31. When the micrometer 33 is rotated clockwise, the measuring rod of the micrometer 33 acts on the print head support 32 to the left, and then the print head support 32 is finely adjusted to the left; when the micrometer 33 is rotated counterclockwise, the spring plunger 35 acts on the print head support 32 to the right, and the print head support 32 is finely adjusted to the right.

[0049] By reasonably controlling the processing accuracy of the substrate, and skillfully using high-precision micrometers, adjusting screws and spring plungers, etc., the present utility model realizes precise adjustment of the parallelism between multiple print heads, the interval between the nozzles of the print heads, and the height error between the print heads, which has a profound impact on eliminating the splicing marks generated by print head splicing, improving the printing DPI, and enhancing the printing yield.

[0050] Enlightened by the ideal embodiments of the present utility model, through the above description, relevant personnel can completely make various changes and modifications without departing from the technical idea of the present utility model. The technical scope of the present utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A multi-print head splicing device, comprising: An ink supply device (1), a flow dividing block assembly (2) connected to the ink supply device (1), and a print head assembly (3) connected to the flow dividing block assembly (2); a plurality of secondary ink cartridges (12) are arranged in the ink supply device (1); the characteristics are: The print head splicing assembly (3) comprises a mounting base plate (31), the mounting base plate (31) being provided with a plurality of adjustment slots, a print head bracket (32) being movably embedded in the adjustment slot, and a print head (34) being movably embedded in the adjustment slot via the print head bracket (32); The secondary ink cartridge (12) is connected to the print head (34) in the print head splicing assembly (3) via the diverter block assembly (2).

2. A multi-print head splicing device according to claim 1, characterized in that: The print head (34) is assembled and positioned with the print head bracket (32) via positioning pins; Furthermore, the print head support (32) is restricted in the adjustment slot of the mounting base plate (31) by means of a plurality of groups of relatively arranged adjustment screws (36).

3. A multi-print head splicing device according to claim 2, characterized in that: The print head support (32) is provided with an outwardly extending adjustment plate; The mounting substrate (31) is provided with a plurality of micrometer screws (33) and spring plungers (35) located outside the adjustment groove, and the micrometer screws (33) and spring plungers (35) are respectively against two sides of the adjustment plate, and a limit plate is also provided on the mounting substrate (31), and the spring plunger (35) is located between the limit plate and the adjustment plate.

4. A multi-print head splicing device according to claim 3, characterized in that: The diverter block assembly (2) comprises a diverter block mounting sheet metal (21), on which a diverter block (23) is arranged, the inlet of the diverter block (23) is assembled and connected with the ink outlet bracket of the secondary ink cartridge (12) via a manual ball valve (22), and the outlet of the diverter block (23) is connected with the feed port of the print head (34) via an ink tube joint (24).

5. A multi-print head splicing device according to claim 4, characterized in that: The inclination of the print head (34) can be adjusted by rotating the adjusting screw (36).

6. A multi-print head splicing device according to claim 5, characterized in that: The print head (34) and the print head support (32) are positioned by positioning pins.

7. A multi-print head splicing device according to claim 4, characterized in that: The print head assembly (3) further comprises a spring plunger mounting block (311), a screw micrometer mounting block (312), and a print head bracket adjustment block (321); the spring plunger mounting block (311) and the screw micrometer mounting block (312) are respectively fixed on the print head assembly mounting base plate (31).

8. A multi-print head splicing device according to claim 7, characterized in that: A thread is provided in the middle of the spring plunger mounting block (311), and the spring plunger (35) is mounted in the middle of the spring plunger mounting block (311) through the thread; a through hole is provided in the micrometer screw mounting block (312), and the micrometer screw (33) is mounted on the micrometer screw mounting block (312) through a through hole clamp; and the print head bracket adjustment block (321) is fixed to the print head bracket (32).

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