CN215662501U

CN215662501U - Printer nozzle adjusting device and printer

Info

Publication number: CN215662501U
Application number: CN202121990857.4U
Authority: CN
Inventors: 郑攀; 徐海生
Original assignee: Kunshan Hisense Electronic Co ltd
Current assignee: Kunshan Hisense Electronic Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-01-28
Anticipated expiration: 2031-08-23

Abstract

The application discloses print head adjusting device and printer relates to the relevant technical field of printers for solve the problem that the shower head adjustment speed is slow, and the adjustment precision is low. The application provides a print head adjusting device is arranged in adjusting and fixing the shower nozzle in the printer, print head adjusting device includes mount table, slip table, first adjustment module and second adjustment module: the mounting table is fixed on a substrate in the spray head printer; the sliding table is connected with the mounting table in a sliding manner; the first adjusting module is connected with the sliding table and used for driving the sliding table to move along the horizontal direction; the second adjustment module is fixedly arranged on the sliding table, an output shaft of the second adjustment module is perpendicular to the base plate, is positioned outside the spray head and is connected with the spray head, and the second adjustment module is used for driving the spray head to rotate around the output shaft. The application is used for adjusting the position of the spray head on the printer substrate in the printer.

Description

Printer nozzle adjusting device and printer

Technical Field

The application relates to the technical field of printer correlation, especially, relate to a print head adjusting device and printer.

Background

The single nozzle of the ink-jet printer has limited printing width, and in the application that the printing width exceeds the effective coverage of the nozzle, one method is to finish the spray printing of a larger width figure by moving the nozzle or moving a base material, but the mode has larger risk to the spray printing precision and quality, easily causes the phenomena of irregular splicing, broken lines and the like, causes quality problems, and simultaneously has low production efficiency. The other type is that the width is spliced by a plurality of spray heads, and the printing width requirement of the whole image is met at one time through multi-spray-head splicing, so that the printing time can be shortened, and the printing efficiency is improved.

However, when a plurality of nozzles are spliced, each nozzle is independent, the installation accuracy of each nozzle is high, and particularly, the parallelism and straightness of the nozzle holes of the plurality of nozzles cannot be adjusted quickly, and the adjustment accuracy is low.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a printer nozzle adjusting device and a printer for solve the problems that the nozzle adjusting speed is slow and the adjusting precision is low.

In order to achieve the above object, on one hand, the adjusting device for the printer nozzle provided by the application is used for adjusting and fixing the nozzle in the printer, and comprises an installation table, a sliding table, a first adjusting module and a second adjusting module, wherein the installation table is fixed on a substrate in the nozzle printer; the sliding table is connected with the mounting table in a sliding manner; the first adjusting module is connected with the sliding table and used for driving the sliding table to move along the horizontal direction; the second adjustment module is fixedly installed on the sliding table, an output shaft of the second adjustment module is perpendicular to the base plate and located outside the spray head and connected with the spray head, and the second adjustment module is used for driving the spray head to rotate around the output shaft.

In some embodiments of the present application, the print head adjusting apparatus further comprises a controller, and the first adjusting module comprises a first driving motor, a lead screw, and a nut; the first driving motor is electrically connected with the controller, and the lead screw is horizontally arranged and is coaxially and fixedly connected with a driving shaft of the first driving motor; the nut is in threaded fit with the lead screw and is fixedly connected with the sliding table.

In some embodiments of the present application, the second adjustment module comprises a second drive motor, a worm, and a worm gear; the second driving motor is electrically connected with the controller, and the worm is coaxially and fixedly connected with a driving shaft of the second driving motor; the worm wheel is meshed with the worm, and the worm wheel is fixedly sleeved on the output shaft.

In some embodiments of the present application, the second adjusting module includes a housing, the housing is fixedly connected to the sliding table, the printer head adjusting device further includes a connecting plate and a mounting plate, the connecting plate is horizontally disposed on the housing, and the output shaft is configured to drive the connecting plate to rotate around the output shaft; the mounting panel is fixed one side of connecting plate, and be used for with shower nozzle fixed connection.

In some embodiments of the present application, the print head adjusting apparatus further includes an index plate disposed between the connecting plate and the housing and fixedly connected to the connecting plate; the second adjusting module further comprises a bearing, the inner ring of the bearing is in interference fit with the output shaft and is fixedly connected with the dividing plate, and the outer ring of the bearing is fixedly connected with the shell.

In some embodiments of the present application, the mounting plate is a U-shaped mounting plate surrounded by a mounting bottom plate and two mounting side plates, the spray head is fixed in a U-shaped groove of the U-shaped mounting plate, and the mounting bottom plate is fixedly connected to the connecting plate.

In some embodiments of the present application, a mounting recess is formed at an upper edge of the mounting base plate, and one end of the connecting plate is inserted into the mounting recess and is screw-fastened to the mounting base plate.

In some embodiments of the present application, the adjusting device of a printer head further includes a sensing piece, a mounting bracket, and a U-shaped sensor, wherein the sensing piece is rotatably connected to the connecting plate and disposed above the connecting plate; one side of the mounting rack is connected with the shell, and the other side of the mounting rack extends upwards; the U-shaped sensor is provided with a U-shaped structure formed by a receiving device, a connecting support and a transmitting device in a surrounding mode, one end of the induction sheet extends into the U-shaped structure, and gaps exist between the induction sheet and the receiving device and between the induction sheet and the transmitting device.

In some embodiments of this application, be formed with first guide part on the mount table, form the second guide part on the slip table, first guide part with second guide part sliding fit, in order to drive the slip table is followed the horizontal direction slides.

On the other hand, the application also provides a printer, which comprises a shell, a base plate, a spray head and at least one printer spray head adjusting device, wherein the base plate is horizontally arranged in the shell and is provided with a plurality of mounting holes; each mounting hole is internally provided with one corresponding spray head; at least one printer nozzle adjusting device is connected with the nozzle and used for adjusting and fixing the nozzle.

In some embodiments of the present application, the printer further includes a plurality of rows of head groups, one of every two adjacent rows of the head groups has at least two of the heads, and a gap exists between the two heads; and the spray heads in the other row of the spray head groups in every two adjacent spray head groups are opposite to the gap.

Compared with the prior art, the print head adjusting device of this application includes first adjustment module and second adjustment module, when specifically using, can drive through first adjustment module earlier the slip table with the second adjustment module is along horizontal upward movement simultaneously, when treating to remove preset position, if the shower nozzle when the horizontal projection direction slope, rethread second adjustment module drives the shower nozzle round the output shaft of second adjustment module rotates, even get the shower nozzle round the shower nozzle is outer rotates a bit, adjusts in two directions to the shower nozzle promptly, has improved the position precision of shower nozzle, and then has improved the printing effect of shower nozzle.

Because print head adjusting device and the above-mentioned print head adjusting device in the printer that this application provided have the same structure, the printer that this application provided can reach the same technological effect with above-mentioned print head adjusting device from this.

Drawings

FIG. 1 is a perspective view of a nozzle adjusting device of a printer according to an embodiment of the present disclosure;

FIG. 2 is a perspective view of another direction of the adjusting device of the inkjet printer head according to the embodiment of the present application, illustrating an installation position of a first adjusting module;

FIG. 3 is an exploded view of a mounting table and a sliding table in the adjustment device of the printer head according to the embodiment of the present application;

FIG. 4 is an exploded view of a nozzle adjustment mechanism of a printer according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a mounting plate in the adjusting device of the printer head according to the embodiment of the present application;

FIG. 6 is a schematic structural diagram of a U-shaped sensor in the adjusting device of the printer head according to the embodiment of the present application;

FIG. 7 is a top view of a printer according to an embodiment of the present application;

fig. 8 is a plan view of a substrate in the printer according to the embodiment of the present application.

The main reference numbers in the drawings accompanying the present specification are as follows:

1-a substrate; 101-mounting holes; 200-printer nozzle adjusting device; 201-a spray head; 2-mounting a platform; 3-a sliding table; 4-a first adjusting module; 41-a first drive motor; 42-a lead screw; 43-a nut; 44-a first harness; 5-a second adjusting module; 51-a second drive motor; 52-a bearing; 53-a housing; 54-a second wire harness; 6-connecting plates; 7-mounting a plate; 71-mounting a base plate; 710-a mounting recess; 72-mounting side plates; 8-an index plate; 9-induction sheet; 10-a mounting frame; a 11-U type sensor; 111-a receiving device; 112-a connecting bracket; 113-transmitting means.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

Referring to fig. 1, 2 and 7, a printer head adjusting device 200 provided by the present application is used for adjusting and fixing a head 201 in a printer, the printer head adjusting device 200 includes a mounting table 2, a sliding table 3, a first adjusting module 4 and a second adjusting module 5, the mounting table 2 is fixed on a substrate 1 in the head printer; the sliding table 3 is connected with the mounting table 2 in a sliding manner; the first adjusting module 4 is connected with the sliding table 3 and is used for driving the sliding table 3 to move along the horizontal direction; second adjustment module 5 fixed mounting be in on the slip table 3, the output shaft of second adjustment module 5 with base plate 1 is perpendicular, and be located shower nozzle 201's outside and with shower nozzle 201 connects, second adjustment module 5 is used for driving shower nozzle 201 round the output shaft rotates.

Compare in prior art, the print head adjusting device 200 of this application includes first adjustment module 4 and second adjustment module 5, when specifically using, can drive through first adjustment module 4 earlier the slip table 3 with second adjustment module 5 moves along the horizontal direction simultaneously, when treating to remove predetermined position, if shower nozzle 201 when the horizontal projection direction slope, rethread second adjustment module 5 drives shower nozzle 201 round the output shaft of second adjustment module 5 rotates, even makes shower nozzle 201 round shower nozzle 201 rotates a bit outside the shower nozzle 201, adjusts shower nozzle 201 on two directions (X axle direction and R axle direction in fig. 1) promptly, has improved shower nozzle 201's position precision, and then has improved shower nozzle 201's the printing effect.

With reference to fig. 7, the nozzle 201 is rectangular, and if the nozzle 201 is inclined in the horizontal projection direction, the upper edge and the lower edge of the nozzle 201 are not parallel to the upper edge or the lower edge of the substrate 1, and the left edge and the right edge of the nozzle 201 are not parallel to the left edge or the right edge of the substrate 1. Or that the distance between each edge of the head 201 and the corresponding edge of the mounting hole 101 in the substrate 1 is not equal everywhere, as shown in fig. 3. The X-axis direction is a position for adjusting the straightness of the horizontal direction head 201, and the R-axis direction is a position for adjusting the horizontal direction head 201.

Referring to fig. 3, the adjusting device 200 of the printer head further includes a controller, and the first adjusting module 4 includes a first driving motor 41, a lead screw 42 and a nut 43; the first driving motor 41 is electrically connected with the controller, and the lead screw 42 is horizontally arranged and coaxially and fixedly connected with a driving shaft of the first driving motor 41; the nut 43 is in threaded fit with the lead screw 42 and is fixedly connected with the sliding table 3, so that the nut 43 can be communicated with the sliding table 3 fixedly connected with the nut 43 to move horizontally together under the driving of the lead screw 42, and the lead screw 42 and the nut 43 are matched to have a self-locking function, so that the spray head 201 cannot move when moving to a preset position and is powered off accidentally.

Wherein, the movement of the sliding table 3 to the right or left can be realized by controlling the first driving motor 41 to rotate forward, and the movement of the sliding table 3 to the other direction can be realized by controlling the first driving motor 41 to rotate backward.

The nut 43 and the slide table 3 may be fixed by any one of a screw fastening connection, a hook and a snap engagement connection, and a direct welding connection. Of course, the nut 43 may be formed integrally with the slide table 3 to have an integral structure.

Alternatively, the transmission component in the first adjusting module 4 is in gear rack transmission, as long as it is ensured that the rotation motion of the first driving motor 41 can be converted into a moving motion mode.

Referring to fig. 1 and 7, the second adjusting module 5 includes a second driving motor 51, a worm, and a worm wheel; the second driving motor 51 is electrically connected with the controller, and the worm is coaxially and fixedly connected with a driving shaft of the second driving motor 51; the worm wheel with the worm meshing, the fixed cover of worm wheel is established on the output shaft, and then second driving motor 51 passes through the worm and drives worm wheel and output shaft and rotate simultaneously, and then drives shower nozzle 201 and rotate to the realization is to shower nozzle 201 in the regulation of R axle direction. Meanwhile, the transmission structure of the worm gear and the worm is compact, and the size of the second adjusting module 5 can be reduced.

Alternatively, the transmission assembly in the second adjusting module 5 is two gears engaged with each other, so long as the rotation axis of the driven wheel is perpendicular to the substrate 1.

It should be noted that the controller can control the pulse values of the first driving motor 41 and the second driving motor 51, so as to control the adjustment precision of the spray head 201, and the operation is simple and convenient. Meanwhile, the first driving motor 41 and the second driving motor 51 are driven, so that the adjustment efficiency and the convenience of digital control of the printer nozzle adjusting device 200 are improved, and since the driving motors have the power-off brake function, after the nozzle 201 is adjusted to the optimal printing position, if the printer is in a dead halt and restarted due to power failure or other reasons caused by external factors, the driving motors can be locked by self-locking the adjusted position of the nozzle 201, normal printing can be performed after the power is restored, and the position of the nozzle 201 does not need to be adjusted again.

In addition, the first adjusting module 4 further includes a first harness 44, and the second adjusting module 5 further includes a second harness 54. The first wire harness 44 is used for signal connection with the first driving motor 41, and the second wire harness 54 is used for signal connection with the second driving electrode 51.

Referring to fig. 4, the second adjusting module 5 includes a housing 53, the housing 53 is fixedly connected to the sliding table 3, the printer head adjusting device 200 further includes a connecting plate 6 and a mounting plate 7, the connecting plate 6 is horizontally disposed on the housing 53, and the output shaft is used for driving the connecting plate 6 to rotate around the output shaft; mounting panel 7 is fixed one side of connecting plate 6, and be used for with shower nozzle 201 fixed connection has realized the transmission relation between shower nozzle 201 and the slip table 3 and shower nozzle 201 and the second adjustment module 5 through connecting plate 6 and mounting panel 7 promptly, and above-mentioned structure easily realizes, simple structure.

It can be understood that the mounting plate 7 is fixed on the connecting plate 6, the connecting plate 6 is fixed on the housing 53, and the housing 53 is fixed on the sliding table 3, so that the mounting plate 7, the connecting plate 6 and the housing 53 (i.e., the second adjusting module 5) can be driven by the sliding table 3 to move simultaneously through the first adjusting module 4. That is, the mounting plate 7, the connecting plate 6, the housing 53 (i.e., the second adjusting module 5), and the slide table 3 are relatively stationary.

Referring to fig. 1 and 4, the inkjet head adjusting device 200 of the printer further includes an index plate 8, the index plate 8 is disposed between the connecting plate 6 and the housing 53 and is fixedly connected to the connecting plate 6, and when the printer is used, the housing 53 is further provided with reference scale lines, so that the rotation angle of the inkjet head 201 can be substantially known through the index plate 8.

With reference to fig. 4, the second adjusting module 5 further includes a bearing 52, an inner ring of the bearing 52 is in interference fit with the output shaft and is fixedly connected to the index plate 8, an outer ring of the bearing 52 is fixedly connected to the housing 53, and the output shaft can avoid friction with the housing 53 while driving the connecting plate 6 to rotate.

Referring to fig. 1 and 5, the mounting plate 7 is a U-shaped mounting plate 7 surrounded by a mounting bottom plate 71 and two mounting side plates 72, the spray head 201 is fixed in a U-shaped groove of the U-shaped mounting plate 7, the mounting bottom plate 71 is fixedly connected with the connecting plate 6, that is, the mounting plate 7 forms a semi-surrounding structure for the spray head 201, thereby ensuring that the spray head 201 is fixed stably. Meanwhile, the spray head 201 can be taken and placed from the opening of the U-shaped mounting plate 7, so that the spray body can be conveniently detached and mounted.

Based on the above embodiment, a mounting recess 710 is formed at the upper edge of the mounting base plate 71, and one end of the connecting plate 6 is inserted into the mounting recess 710 and is in threaded fastening connection with the mounting base plate 71, so as to ensure that the upper surface of the connecting plate 6 and the upper edge of the mounting base plate 71 are in a plane after being mounted.

Alternatively, the mounting plate 7 and the connecting plate 6 may be formed by an integral molding process.

Referring to fig. 2, 4 and 6, the adjusting device 200 further includes a sensing piece 9, a mounting bracket 10 and a U-shaped sensor 11, wherein the sensing piece 9 is rotatably connected with the connecting plate 6 and is arranged above the connecting plate 6; one side of the mounting bracket 10 is connected with the shell 53, and the other side of the mounting bracket 10 extends upwards; the U-shaped sensor 11 is provided with a U-shaped structure surrounded by a receiving device 111, a connecting bracket 112 and an emitting device 113, one end of the sensing piece 9 extends into the U-shaped structure, gaps exist between the sensing piece 9 and the receiving device 111 and between the sensing piece 9 and the emitting device 113, and the zero-return positioning effect or the resetting effect of the spray head 201 is achieved by arranging the sensing piece 9 and the U-shaped sensor 11.

It can be understood that when the nozzle 201 is adjusted to a predetermined position, if the nozzle 201 needs to be replaced again, the new nozzle 201 can be quickly reset to zero or reset by the sensing piece 9 and the U-shaped sensor 11.

Wherein, the middle position department of response piece 9 is formed with and rotates the hole, be formed with an internal thread hole on the connecting plate 6, the diameter in rotation hole is greater than the diameter in internal thread hole. When specifically using, can be through the mutual screw-thread fit in a screw and this internal thread hole, simultaneously because the screw thread end that rotates hole and screw does not contact each other, guarantee promptly that response piece 9 can rotate, the nut of this screw can avoid response piece 9 to drop, and the diameter of the nut of this screw is greater than the diameter of rotating the hole promptly.

In addition, a guide structure is formed between one end of the sensing piece 9 far away from the U-shaped sensor 11 and the connecting plate 6 so as to guide the rotation of the sensing piece 9.

In some embodiments of this application, be formed with first guide part on the mount table 2, form the second guide part on the slip table 3, first guide part with second guide part sliding fit, in order to drive slip table 3 follows the horizontal direction slides to play the guide effect to the motion of slip table 3.

One of the first guide part and the second guide part is a guide groove, the other is a guide projection, and the guide projection is positioned in the guide groove and can slide along the guide groove along the horizontal direction.

Referring to fig. 7 and 8, the present application further provides a printer, which includes a housing, a substrate 1, a nozzle 201, and at least one of the above-mentioned nozzle adjusting devices 200, wherein the substrate 1 is horizontally disposed in the housing, and the substrate 1 has a plurality of mounting holes 101; each mounting hole 101 is correspondingly provided with one spray head 201; at least one of the printer head adjusting devices 200 is coupled to the head 201 for adjusting and securing the head 201. in the description herein, specific features, structures, materials, or characteristics may be combined in any suitable manner in any one or more of the embodiments or examples.

Because the printer nozzle adjusting device 200 in the printer provided by the application and the printer nozzle adjusting device 200 have the same structure, the printer provided by the application can achieve the same technical effect as the printer nozzle adjusting device 200.

That is, use first adjustment module 4(X axle module) and the superposition of second adjustment module 5 (the rotatory module of R axle), the module is high accuracy slip table 3, and every shower nozzle 201 cooperates one set of miniature module (X axle module + the rotatory module of R axle), all can realize the horizontal migration of X axle direction and the rotatory regulatory function of circumference of R axle direction, and X axle direction is the concatenation straightness accuracy position between each shower nozzle 201 of adjustment horizontal direction. The R-axis direction is a position for adjusting the relative parallel direction between the heads 201. Thus, above-mentioned printer can splice the shower nozzle hole among a plurality of shower nozzles 201 in the printer to be parallel to each other to reduce the error that the inkjet printed, improve and print precision and printing efficiency.

With continued reference to fig. 3, the printer further includes a plurality of rows of head groups, and each two adjacent rows of head groups have at least two heads 201, and a gap exists between two heads 201; the spray heads 201 in the other row of the spray head groups in every two adjacent spray head groups are arranged opposite to the gap.

Illustratively, the printer further comprises two rows of nozzle groups, the first row of nozzle groups comprises two nozzles 201, the second row of nozzle groups comprises two nozzles 201, a gap exists between the two nozzles 201 in the first row of nozzle groups, the left nozzle 201 in the second row of nozzle groups is arranged opposite to the gap, and the right nozzle 201 in the second row of nozzle groups is used for splicing the width.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A print head adjusting device, wherein the print head adjusting device is used for adjusting and fixing a print head in a printer, the print head adjusting device comprises:

a mounting table fixed on a substrate in the head printer;

the sliding table is connected with the mounting table in a sliding manner;

the first adjusting module is connected with the sliding table and used for driving the sliding table to move along the horizontal direction;

the second adjustment module, the second adjustment module fixed mounting be in on the slip table, the output shaft of second adjustment module with the base plate is perpendicular, and be located the outside of shower nozzle and with the shower nozzle is connected, the second adjustment module is used for driving the shower nozzle round the output shaft rotates.

2. The print head adjustment device of claim 1, further comprising a controller, the first adjustment module comprising:

the first driving motor is electrically connected with the controller;

the screw rod is horizontally arranged and is coaxially and fixedly connected with a driving shaft of the first driving motor;

the nut is in threaded fit with the lead screw and is fixedly connected with the sliding table.

3. The print head adjustment apparatus of claim 2, wherein the second adjustment module comprises:

the second driving motor is electrically connected with the controller;

the worm is coaxially and fixedly connected with a driving shaft of the second driving motor;

the worm wheel is meshed with the worm, and the worm wheel is fixedly sleeved on the output shaft.

4. The adjusting device of claim 1, wherein the second adjusting module comprises a housing, the housing is fixedly connected with the sliding table, and the adjusting device of the printer nozzle further comprises:

the connecting plate is horizontally arranged on the shell, and the output shaft is used for driving the connecting plate to rotate around the output shaft;

the mounting panel, the mounting panel is fixed one side of connecting plate, and be used for with shower nozzle fixed connection.

5. The print head adjustment device of claim 4, further comprising:

the dividing disc is arranged between the connecting plate and the shell and is fixedly connected with the connecting plate;

the second adjusting module further comprises:

the bearing inner ring is in interference fit with the output shaft and is fixedly connected with the dividing plate, and the bearing outer ring is fixedly connected with the shell.

6. A printer nozzle adjusting device according to claim 5, wherein the mounting plate is a U-shaped mounting plate surrounded by a mounting bottom plate and two mounting side plates, the nozzle is fixed in a U-shaped groove of the U-shaped mounting plate, and the mounting bottom plate is fixedly connected with the connecting plate.

7. The print head adjustment device of claim 4, further comprising:

the induction sheet is rotatably connected with the connecting plate and is arranged above the connecting plate;

one side of the mounting rack is connected with the shell, and the other side of the mounting rack extends upwards;

the U-shaped sensor is provided with a U-shaped structure which is formed by a receiving device, a connecting support and a transmitting device in a surrounding mode, and one end of the induction sheet extends into the U-shaped structure and a gap is reserved between the induction sheet and the receiving device and between the induction sheet and the transmitting device.

8. The adjusting device of claim 2, wherein a first guide portion is formed on the mounting table, a second guide portion is formed on the sliding table, and the first guide portion and the second guide portion are in sliding fit to drive the sliding table to slide along the horizontal direction.

9. A printer, comprising:

a housing;

the substrate is horizontally arranged in the shell and is provided with a plurality of mounting holes;

each spray head is correspondingly arranged in each mounting hole;

at least one print head adjustment device according to any one of claims 1 to 8, connected to the print head for adjusting and fixing the print head.

10. The printer according to claim 9, comprising:

the spray head groups in each two adjacent rows have at least two spray heads, and a gap exists between the two spray heads; and the spray heads in the other row of the spray head groups in every two adjacent spray head groups are opposite to the gap.