CN114474994A

CN114474994A - Printing apparatus for printing along peripheral side and control method

Info

Publication number: CN114474994A
Application number: CN202111632082.8A
Authority: CN
Inventors: 徐四喜; 龙武秦; 杨清华
Original assignee: Dongguan Tuchuang Intelligent Manufacturing Co Ltd
Current assignee: Dongguan Tuchuang Intelligent Manufacturing Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-05-13
Anticipated expiration: 2041-12-28
Also published as: CN114474994B

Abstract

The invention belongs to the technical field of printing, solves the technical problem of low applicability of the existing printing equipment, and provides printing equipment for printing along the peripheral side and a control method. Wherein, this equipment includes: a rail on one side of which a printing medium is placed; the printing mechanism is arranged on the track and is used for ejecting liquid to a to-be-printed area of a to-be-printed medium according to a preset ejection speed; and the driving mechanism is connected with the printing mechanism and is used for driving the printing mechanism to rotate around the periphery of the medium to be printed along the track. Regardless of the proportion of the printing medium, the printing mechanism always moves in the range of the printing area correspondingly, so that the printing mechanism does not pass through the non-printing area, and the printing data of the printing mechanism only needs to be set for the printing area, thereby being convenient for printing; has the advantages of convenient control of printing and the like.

Description

Printing apparatus for printing along peripheral side and control method

Technical Field

The invention relates to the technical field of printing, in particular to printing equipment for printing along the peripheral side and a control method.

Background

For a print medium such as a cylindrical body that needs to be printed in the circumferential direction, it is necessary to rotate the print medium around its own axis to perform printing.

The existing cylinder printing is generally performed by rotating one end of a clamping medium to be printed, and performing printing on the circumferential side of the rotation through a printing nozzle. The printing device is only suitable for being applied to the circumferential side surface of a printing area which surrounds a printing medium for a whole circle, and when the printing area only occupies a small part on the circumferential side wall and does not cover a circle around the printing medium, the spray head of the printing device needs to represent most of jet holes which do not discharge ink, so that the printing medium can print a needed pattern. However, when the printing area occupies a small portion of the printing medium, a large number of orifices that do not emit ink need to be characterized, which is inconvenient to print, and thus the applicability of this type of printing apparatus is not high. Therefore, the existing printing apparatus has a technical problem of low applicability.

Disclosure of Invention

In view of this, embodiments of the present invention provide a printing apparatus for printing along a peripheral side surface and a control method thereof, so as to solve the technical problem that the applicability of some printing apparatuses is not high.

An embodiment of the present invention provides, in a first aspect, a printing apparatus that prints along a peripheral side, the printing apparatus including:

a rail on one side of which a printing medium is placed;

the printing mechanism is arranged on the track and is used for ejecting liquid to a to-be-printed area of a to-be-printed medium according to a preset ejection speed;

and the driving mechanism is connected with the printing mechanism and is used for driving the printing mechanism to rotate around the periphery of the medium to be printed along the track.

Further, the rail is an annular rail.

Further, the drive mechanism includes: and the first driving component is used for driving the printing mechanism to move around the peripheral side of the medium to be printed.

Further, the driving mechanism further includes: and the second driving component is used for driving the printing mechanism to move towards or away from the printing medium so as to adjust the distance from the printing mechanism to the printing medium.

Further, the driving mechanism further includes: and the third driving component is used for driving the printing medium and/or the printing mechanism to move up and down along the axial direction of the printing medium so as to enable the printing medium and the printing mechanism to move relatively along the axial direction of the printing medium.

Further, the device further comprises a clamping mechanism, wherein the clamping mechanism is located on the inner side of the track and used for clamping the printing medium.

In a second aspect, the present invention provides a method of controlling printing along a peripheral side, the method comprising:

acquiring position information of a to-be-printed area of a printing medium;

calculating a movement path of the printing trolley relative to the track according to the position information;

and controlling the printing trolley to move along the movement path so as to spray liquid to the area to be printed.

Further, the method further comprises:

acquiring the current distance from a nozzle of a spray head on a printing trolley to the printing area;

judging whether the current distance meets a preset value or not;

if not, adjusting the distance from a nozzle of a spray head on the printing trolley to the printing area to a preset value.

Further, the method further comprises:

acquiring current position information of the printing trolley relative to the track;

and if the current position information is superposed with the initial position information, controlling a spray head on the printing trolley to stop spraying liquid.

Further, the method further comprises:

acquiring the initial position of the motion path, and confirming the initial data of the printing data according to the initial position;

splitting the initial data to obtain first initial data and second initial data;

taking the first initial data as first initial data of the printing trolley passing the initial position for the first time;

and taking the second initial data as second initial data of the printing trolley passing the initial position for the second time.

In conclusion, the beneficial effects of the invention are as follows:

the clamping mechanism is adopted to clamp the printing medium, the printing medium is not moved in the printing process, the printing mechanism is driven to move around the printing medium according to the preset path, and the printing mechanism always moves in the range of the printing area regardless of the proportion of the printing medium, so that the printing area does not pass through the non-printing area, the printing data of the printing mechanism only needs to be set aiming at the printing area, and the printing is convenient. The technical problem that the existing printing equipment is not high in applicability is solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, without any creative effort, other drawings may be obtained according to the drawings, and these drawings are all within the protection scope of the present invention.

FIG. 1 is a schematic diagram of a printing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a structure for printing adjacent to a print medium according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of FIG. 2 from another perspective;

FIG. 4 is an exploded view of a printing apparatus according to one embodiment of the present invention;

FIG. 5 is a schematic view of a print medium according to one embodiment of the present invention;

fig. 6 is a flowchart of a control method according to a second embodiment of the present invention.

Parts and numbering in the drawings:

1. a clamping mechanism; 2. a printing mechanism; 3. a first drive assembly; 31. a stator; 311. an annular groove; 32. a mover; 321. a clamping block; 33. an annular guide rail; 4. a second drive assembly; 41. a drive member; 42. a slide rail; 5. a third drive assembly; 6. a mounting frame; 7. a print medium; 8. a track.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be made clear below with reference to the accompanying drawings of the embodiments of the present invention,

Is fully described. It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present invention, 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 of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In case of conflict, the embodiments of the present invention and the various features of the embodiments may be combined with each other within the scope of the present invention.

The present invention is described in further detail below with reference to fig. 1 to 6.

Example one

The printing device is used for printing along the peripheral side surface of a printing medium, the printing medium can be a cylinder, a cone, a tetrahedron and the like, or a flexible material is wound on a columnar substance, a printing area is formed on the surface of the columnar substance, and the printing device is suitable for printing with any proportion of printing area. As shown in fig. 1, specifically, the printing apparatus includes:

the track 8, the print medium 7 is placed on one side of the track 8, the track 8 may be an annular track 8, or an arc-shaped track 8, and specifically, the shape of the track 8 may be determined according to a print area of the print medium 7 to be printed.

The printing mechanism 2 is arranged on the track 8, and is used for ejecting liquid to the area to be printed of the medium to be printed 7 according to a preset ejection speed; the printing structure can be directly arranged on the track 8, and also can be arranged on the track 8 in a magnetic suspension mode, and the mode can quickly and freely drive the printing mechanism 2 to move so as to realize quick and accurate printing.

And the driving mechanism is connected with the printing mechanism 2 and is used for driving the printing mechanism 2 to rotate around the peripheral side of the medium 7 to be printed along the track 8. The rotation path for driving the printing mechanism 2 is set according to the printing area.

In the present embodiment, the printing area may be on the side surface of the printing medium 7, the circumferential side surface covering the entire printing medium 7, or may be on a partial area of the side surface of the printing medium 7. In addition, the printing medium 7 may be a cylinder, a cone, or other three-dimensional object; and the side of the printing medium 7 may be a regular pattern or an irregular pattern.

The preset path is set according to the ratio of the printing area on the printing medium 7 and the surface shape of the printing medium 7; specifically, if the printing area occupies 100% of the side surface of the printing medium 7 (the specific occupation ratio can be adjusted according to the requirement), the movement path of the printing mechanism 2 is controlled to move along the area to be printed, and after the printing mechanism 2 or the printing medium 7 is moved from one end to the other end, the printing mechanism 2 or the printing medium 7 is driven to step to perform the overlapping printing area in height; if the printing area is exactly 100%, the printing mechanism 2 can be selectively controlled to move around the printing medium 7 for one circle; the printing mechanism 2 or the printing medium 7 is then driven to step to perform the superimposed printing area in height. Therefore, the proportion of the printing area to the printing medium 7 can be in any range, all the jet holes of the printing equipment can be used, and the jet holes which do not discharge ink do not need to be represented, so that the programming control printing is convenient, and the ink jetting of the printing mechanism 2 is convenient to control. If the side surface of the printing medium 7 is in a regular shape, for example, on the printing medium 7 with a cylinder or a plane side surface, the printing mechanism 2 is controlled to move regularly along the side surface of the printing medium 7; if the side surface of the printing medium 7, namely the printing area is in an irregular shape, acquiring the distance from the printing mechanism 2 to the printing area, and adjusting the movement of the printing mechanism 2 at any time to enable the movement path of the printing mechanism 2 to be matched with the change of the surface of the printing area; as shown in fig. 5, the hatched portion represents a print area, and the entire represents the print medium 7; when the printing area occupies only a part of the printing medium 7, the preset path moves corresponding to the printing area.

The printing medium 7 can be clamped by the clamping mechanism 1 or the bearing mechanism can bear the printing medium 7, and can also be directly placed on one side of the track 8; because in this embodiment, printing mechanism 2 adopts the mode of side dress, and at the printing process, print media 7 is motionless, and drive printing mechanism 2 moves around print media 7 according to predetermined route, and no matter what kind accounts for print media 7, and printing mechanism 2 corresponds the within range motion at the printing area all the time, and then makes printing mechanism 2 not pass through the non-printing area, so printing mechanism 2's print data only need set up to the printing area, and then is convenient for print. The technical problem that the existing printing equipment is not high in applicability is solved.

In addition, printing apparatus among the prior art is suitable for in the industry printing usually, and comparatively common printing apparatus structure is exactly to set up transmission mechanism transmission print medium 7, still need set up drive printing mechanism 2 in addition and move towards print medium 7, and a plurality of mechanisms area that set up on the printer is big, and the printing process is comparatively loaded down with trivial details, only is applicable to industrial assembly line printing, needs great occupation of land space. Therefore, this printing apparatus has a technical problem that it is not suitable for printing in a small place; the printing equipment provided by the invention is only provided with the clamping mechanism 1 for clamping the medium 7 to be printed, and only one driving mechanism for driving the printing mechanism 2 to move is needed, so that the whole equipment has smaller volume, fewer mechanisms are used by the whole equipment, the equipment can be better integrated, the structure of the whole equipment is more compact, and the maximum occupied area length of the whole equipment can be reduced to be within half a meter. Therefore, the printing equipment provided by the invention can better play a role in places with narrow space, such as markets, families and the like. In addition, do not need too much mechanism setting, so set up the cost that has also reduced greatly, and then make the more consumer groups of this printing apparatus adaptation, improved this printing apparatus's universal relevance nature. Furthermore, when a user needs to customize a printing pattern, the image to be printed and the size information of the printing medium 7 are acquired on the upper computer, the pattern to be printed is simulated and pasted on the image of the printing medium 7, specific printing area position information is acquired, a preset driving path is generated, and the printing mechanism 2 is driven to move according to the driving path; therefore, the user can perform customized printing according to the pattern desired to be printed. Not only the printed pattern but also the size of the print area, i.e., the ratio of the entire printed pattern to the print medium 7, can be set by the user; and customized printing of the printing device is realized. Therefore, the printing equipment provided by the invention solves the technical problem that the printing equipment is not suitable for printing in a small place; the method has the advantages of being suitable for small places and capable of printing in small batches and in a customized mode.

The liquid ejected by the printing mechanism 2 includes: one or more of gloss oil, white ink, color ink, and coating; the number of the spray heads is set corresponding to the type of the liquid; that is, one head ejects one liquid correspondingly. The spray head is arranged on the surface of the printing mechanism 2, correspondingly, a curing lamp is arranged on the side surface of the spray head, and the distance between the curing lamp and the spray head is 150 mm; the energy of the curing lamp is prevented from drying the spray head, so that the spray head is blocked. The curing lamp is cured in a normally bright mode; with the relative movement with the printing medium 7, after the liquid is ejected, the curing lamp directly cures the ejected liquid, and the liquid is prevented from moving along the printing medium 7 under the influence of its own gravity. Specifically, in this embodiment, two nozzles are provided to print the coating and the color ink. The coating is firstly ejected by the nozzle positioned at the most end part, and the coating on the printing medium 7 is dried by the curing device; with the relative movement relationship between the printing medium 7 and the printing mechanism 2, the printing medium 7 is stepped in the axial direction, so that the next nozzle for printing is sprayed with color ink at the position corresponding to the spraying position of the previous nozzle, and the color ink is printed in an overlapping manner, and finally all printing is finished. In other embodiments, the printing mechanism 2 prints the coating, white ink, color ink, and gloss oil in that order.

Further, the rail 8 is an annular rail 8.

In the present embodiment, the rail 8 is provided in a circular ring shape, and the circular ring shape of the rail 8 is advantageous for driving the printing mechanism 2 to move. In other embodiments, the shape of the track 8 may be set according to the shape of the printing medium 7, and preferably, the track 8 has a shape similar to the printing medium 7, and the printing medium 7 is coaxially disposed with the track 8.

Further, as shown in fig. 1 and 4, the driving mechanism includes: the first driving assembly 3 is used for driving the printing mechanism 2 to move around the peripheral side of the medium to be printed 7.

In the present embodiment, the first driving assembly 3 drives the printing mechanism 2 to make a circular motion, and the printing medium 7 is set as a cylinder in the present embodiment, which is suitable for printing on a curved surface in a three-dimensional figure for a printing area. The first driving assembly 3 drives the printing medium 7 to move circularly around the printing medium 7, or move in an arc shape, so that the printing mechanism 2 always moves along the printing area within a certain distance. So set up, make printing apparatus be applicable to more and print the cylinder or can print around self axis pivoted rotator, the printing apparatus that this embodiment provided has the technological effect of being convenient for print. The first driving component 3 can adopt a driving mode of a ring-shaped motor; or a driving turntable, the printing mechanism 2 is arranged at the eccentric position of the turntable deviated from the rotating shaft of the turntable, and the printing mechanism 2 forms circular motion around the printing medium 7; alternatively, the printing medium 7 may be disposed on a large gear, a small gear may be engaged with the periphery of the large gear, and a motor may be disposed to drive the small gear to drive the large gear. Those skilled in the art can drive the printing mechanism 2 to perform circular motion according to actual needs and different structures arranged corresponding to different use scenes, as long as the printing mechanism 2 is driven to perform circular motion.

As shown in fig. 1 and 4, the first driving assembly 3 includes: a stator 31 and a mover 32; the mover 32 is connected with the stator 31, and one side of the mover 32, which is far away from the stator 31, is connected with the printing mechanism 2; the stator 31 is annular and the track 8 is arranged concentrically with the stator 31. The stator is arranged on the track 8 and is arranged coaxially with the track 8.

In the embodiment, the first driving assembly 3 is driven by an annular motor, specifically, the stator 31 is in a circular ring shape, and the clamping mechanism 1 is arranged at the inner ring of the stator 31 and is arranged concentrically with the stator 31; when the stator 31 is energized, a magnetic field is generated, which causes the mover 32 to move along the shape of the stator 31, thereby moving the printing mechanism 2 around the printing medium 7. And the stator 31 and the clamping mechanism 1 are arranged coaxially, so that the distance from the stator 31 to the printing medium 7 is consistent, and the distance from the printing mechanism 2 to the printing medium 7 is convenient to control. In other embodiments, an annular groove 311 is formed on the stator 31, and the mover 32 performs an annular motion along the annular groove 311.

Preferably, as shown in fig. 1, the first driving assembly 3 further includes: the endless guide rail 33; the annular guide rail is arranged on the track 8, and the annular guide rail 33 and the stator 31 are arranged coaxially; the mover 32 is provided with an engaging portion, which is connected to the annular guide 33 and is movable along the annular guide 33 to guide the mover 32.

In the present embodiment, the annular guide rail 33 is disposed to protrude from the annular groove 311, and the upper end surface of the annular guide rail 33 is in the same plane as the upper end surface of the stator 31; the printing mechanism 2 is moved along the annular guide rail 33, so that the printing mechanism 2 is further moved stably, and the printing effect is ensured.

Preferably, as shown in fig. 4, the fitting portion includes: a clamping block 321 and a ball (not shown in the figure) clamped at two sides of the annular guide rail 33; the balls are disposed in the sides of the catching blocks 321 facing each other.

In this embodiment, the clamping block 321 is clamped on the annular guide rail 33, and balls are provided to reduce the friction between the annular guide rail 33 and the clamping block 321; the provision of the balls facilitates the sliding of the engagement portion on the endless track 33 and hence the movement of the printing mechanism 2 on the endless track 33.

Preferably, the head of the printing mechanism 2 ejects the liquid at a preset ejection speed, wherein the preset ejection speed ranges from: 6 to 12 meters per second.

In the present embodiment, 9 meters per second is preferable. The liquid ejected by the printing mechanism 2 is caused to accurately land on the printing medium 7 without the occurrence of parabolic movement.

Further, with reference to fig. 2 and 3, the driving mechanism further includes: and the second driving assembly 4 is used for driving the printing mechanism 2 to move towards or away from the printing medium 7 so as to adjust the distance from the printing mechanism 2 to the printing medium 7.

In this embodiment, specifically, the second driving assembly 4 is disposed at the output end of the first driving assembly 3, and the second driving assembly 4 drives the printing mechanism 2 to move, so as to adjust the distance from the printing mechanism 2 to the printing medium 7, that is, adjust the radial distance from the printing mechanism 2 to the central axis of the printing medium 7; with the arrangement, the printing medium 7 is always printed within a preset distance range, so that the printing effect is ensured; thus, the printing apparatus adapts to print media 7 of different radii.

More specifically, the device also comprises a distance measuring mechanism which is arranged on one surface of the jet orifice of the printing mechanism 2; the distance measuring mechanism is used for detecting the actual distance from the printing mechanism 2 to the surface of the printing medium 7; and judging whether the actual distance is within a preset distance range, and if not, controlling the second driving component 4 to drive the printing mechanism 2 to move so that the distance from the printing mechanism 2 to the printing medium 7 is within the preset range. The distance measuring mechanism detects the real-time distance from the printing mechanism 2 to the printing medium 7 in real time and feeds the data back to the control system, so that the movement of the printing mechanism 2 is controlled in real time, and the distance from the printing mechanism 2 to the surface of the printing medium 7 is monitored in real time. With reference to fig. 1 and 2, therefore, when the printing cone or the side surface of the printing medium 7 to which the printing area is located is irregular, the printing mechanism 2 can adjust the distance from the printing mechanism 2 to the surface of the printing medium 7 according to the radial dimension change of the printing medium 7; enabling the apparatus to adapt to print media 7 of different radii or irregularities.

Preferably, as shown in fig. 4, the second driving assembly 4 includes: a driver 41 and a slide rail 42; the driver 41 is connected to the slide rail 42, and the driver 41 drives the printing mechanism 2 to move toward or away from the printing medium 7 along the slide rail 42.

In the present embodiment, the driving member 41 is provided in a motor-driven lead screw manner, and the slide rail 42 is provided on the printing mechanism 2, and the sliding direction of the slide rail 42 is always directed toward the axis of the printing medium 7. The printing mechanism 2 is moved in the radial direction of the printing medium 7.

Preferably, the predetermined distance is in the range of 1 mm to 3 mm.

In the embodiment, 2 mm is preferred, so that the situation that the printing mechanism 2 is far away from the printing medium 7 and the liquid ejected by the printing mechanism 2 generates parabolic motion to cause displacement is avoided.

Further, the drive mechanism further comprises: and the third driving assembly 5 is used for driving the printing medium 7 and/or the printing mechanism 2 to move up and down along the axial direction of the printing medium 7, so that the printing medium 7 and the printing mechanism 2 move relatively along the axial direction of the printing medium 7.

In the present embodiment, the third drive assembly 5 is connected to the printing mechanism 2; make print mechanism 2 carry out according to the length of printing medium 7 and make print mechanism 2 move along the axial of printing medium 7, and then more intelligent completion is printed. Specifically, this equipment still includes mounting bracket 6: the clamping mechanism 1 penetrates through the mounting frame 6 and extends upwards, and the driving machine frame is arranged on the mounting frame 6. The third driving assembly 5 is a worm and gear automatic lifter, and is specifically connected with the mounting frame 6, so as to drive the driving mechanism to move along the axis direction of the printing medium 7. The third driving component 5 drives the printing medium 7 to move along the axial direction of the printing medium 7, so that the printing medium 7 is overlapped in the axial direction, namely the printing medium 7 is stepped in the axial direction; thereby completing printing of the entire image. In other embodiments, the third driving assembly 5 is connected with the printing medium 7, and specifically, is connected with the clamping mechanism 1 to drive the clamping mechanism 1 to be connected so as to drive the to-be-printed medium 7 to ascend and descend; in the embodiment, the printing medium 7 is driven to ascend and descend, the first driving component 3 and the second driving component 4 do not need to be driven, the driving force of the third driving component 5 is reduced as much as possible, and energy is saved.

Further, the apparatus comprises a clamping mechanism 1, which clamping mechanism 1 is located inside the rail 8 for clamping the print medium 7.

In the present embodiment, the chucking mechanism 1 includes: the clamping device comprises a first clamping arm and a second clamping arm, wherein the first clamping arm and the second clamping arm are fixed. Set up fixture 1 centre gripping fixed print medium 7, make to print more accurately.

The implementation principle of the invention is as follows:

placing the printing medium 7 in the clamping mechanism 1, and clamping the printing medium 7 by the clamping mechanism 1; then, selecting an image to be printed on an upper computer, pasting the printed image on a printing medium 7 after the upper computer acquires the printed image, adjusting the proportion by a user according to the requirement, and then confirming a printing area; generating a moving path of the printing mechanism 2 according to the printing area, and controlling the printing mechanism 2 to move along the printing path and to eject ink on the surface of the printing medium 7 by the controller; finally, a print pattern is formed on the surface of the print medium 7.

Example two

A second embodiment of the present invention provides a method for controlling printing along a peripheral side surface, which is specifically used for controlling a printing apparatus according to any one of the first embodiment, and specifically, with reference to fig. 6, the method includes:

acquiring position information of a to-be-printed area of a printing medium; the area to be printed is on the side of the printing medium 7, and may be on the circumferential side covering the entire printing medium 7, or may be on a partial area of the side of the printing medium 7. In addition, the printing medium 7 may be a cylinder, a cone, or other three-dimensional object; and the side of the printing medium 7 may be a regular pattern or an irregular pattern.

Calculating a movement path of the printing trolley relative to the track according to the position information; the shape of the track 8 is pre-stored on the system, the raster is arranged on the track 8, the position of the printing mechanism 2 corresponding to the raster is read, and the position information of the printing area is pasted in the system, so as to determine the position information of the medium 7 to be printed relative to the track 8.

And controlling the printing trolley to move along the movement path so as to eject the liquid to the area to be printed. The preset path is set according to the ratio of the printing area on the printing medium 7 and the surface shape of the printing medium 7; specifically, if the printing area occupies 100% of the side surface of the printing medium 7 (the specific occupation ratio can be adjusted according to the requirement), the movement path of the printing mechanism 2 is controlled to move along the area to be printed, and after the printing mechanism 2 or the printing medium 7 is moved from one end to the other end, the printing mechanism 2 or the printing medium 7 is driven to step to perform the overlapping printing area in height; if the printing area is exactly 100%, the printing mechanism 2 can be selectively controlled to move around the printing medium 7 for one circle; the printing mechanism 2 or the printing medium 7 is then driven to step to perform the superimposed printing area in height. Therefore, the proportion of the printing area to the printing medium 7 can be in any range, all the jet holes of the printing equipment can be used, and the jet holes which do not discharge ink do not need to be represented, so that the programming control printing is convenient, and the ink jetting of the printing mechanism 2 is convenient to control. If the side surface of the printing medium 7 is in a regular shape, for example, on the printing medium 7 with a cylinder or a plane side surface, the printing mechanism 2 is controlled to move regularly along the side surface of the printing medium 7; if the side surface of the printing medium 7, namely the printing area is in an irregular shape, acquiring the distance from the printing mechanism 2 to the printing area, and adjusting the movement of the printing mechanism 2 at any time to enable the movement path of the printing mechanism 2 to be matched with the change of the surface of the printing area; as shown in fig. 5, the hatched portion represents a print area, and the entire represents the print medium 7; when the printing area occupies only a part of the printing medium 7, the preset path moves corresponding to the printing area.

In this embodiment, in the printing process, print medium 7 is motionless, and drive printing mechanism 2 moves around print medium 7 according to predetermined route, and no matter what kind accounts for print medium 7 than, printing mechanism 2 corresponds the within range motion at the print zone all the time, and then makes printing mechanism 2 not pass through non-print zone, so print mechanism 2's print data only need set up to print zone, and then be convenient for print. The technical problem that the existing printing equipment is not high in applicability is solved.

Further, the method also includes:

acquiring the current distance from a nozzle of a spray head on a printing trolley to a printing area; the distance measuring mechanism can be arranged to test the distance from the spray head to the nozzle in the printing trolley, and specifically, the distance closest to the surface of the printing area is regarded as the distance from the nozzle to the printing area.

Judging whether the current distance meets a preset value;

if not, adjusting the distance from the nozzle of the spray head on the printing trolley to the printing area to a preset value.

In the embodiment, preferably 2 mm, it is avoided that the printing mechanism 2 is far away from the printing medium 7, and the liquid ejected by the printing mechanism 2 generates a parabolic motion, which causes displacement. The distance is adjusted through the second adjusting component, the ink is guaranteed to be sprayed within a preset distance range according to the preset spraying speed, and the printing quality is guaranteed.

Further, the method also includes:

acquiring current position information of the printing trolley relative to the track 8;

and if the current position information is superposed with the initial position information, controlling the spray head on the printing trolley to stop spraying the liquid.

In this embodiment, the grating is arranged on the track 8, the information of the printing mechanism 2 relative to the track 8 is judged by adopting the grating, and after the printing mechanism 2 moves for a circle, the printing mechanism 2 is controlled to stop ejecting liquid, so that the printing quality is ensured, and even if the printing mechanism 2 is controlled to stop moving in the moving process, the printing mechanism 2 has larger mass and larger inertia motion, so that the double image can be printed at the splicing part. Therefore, the starting of the spray head is controlled by detecting the movement path of the printing mechanism 2, and the printing precision is improved.

Further, the method also includes:

taking the first initial data as first initial data of the printing trolley passing through the initial position for the first time;

and taking the second initial data as second initial data of the printing trolley passing through the initial position for the second time.

In the present embodiment, the starting position, i.e., the starting point of the area to be printed of the printing medium 7 with respect to the rail 8, may be set in length according to the size of the printing medium 7. The printing data corresponding to the initial position is split, feathering splicing is formed at the initial position, double images are prevented from being formed at the initial position of printing, and therefore printing precision is guaranteed.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A printing apparatus that prints along a peripheral side, characterized by comprising:

a rail on one side of which a printing medium is placed;

2. Printing apparatus for printing along a peripheral side according to claim 1, wherein the track is an annular track.

3. Printing apparatus for printing along a peripheral side according to claim 1, wherein the drive mechanism comprises: and the first driving component is used for driving the printing mechanism to move around the peripheral side of the medium to be printed.

4. A printing apparatus for printing along a peripheral side according to claim 3, wherein said drive mechanism further comprises: and the second driving component is used for driving the printing mechanism to move towards or away from the printing medium so as to adjust the distance from the printing mechanism to the printing medium.

5. A printing apparatus for printing along a peripheral side according to claim 1, wherein said drive mechanism further comprises: and the third driving component is used for driving the printing medium and/or the printing mechanism to move up and down along the axial direction of the printing medium so as to enable the printing medium and the printing mechanism to move relatively along the axial direction of the printing medium.

6. A peripheral side-printing apparatus according to any of claims 1 to 5, wherein the apparatus further comprises a gripper mechanism located on the inside of the track for gripping a print medium.

7. A method of controlling printing along a peripheral side, the method comprising:

acquiring position information of a region to be printed of a printing medium;

8. The method of controlling printing along a peripheral side of claim 7, further comprising:

judging whether the current distance meets a preset value or not;

9. The method of controlling printing along a peripheral side of claim 7, the method further comprising:

10. The method of controlling printing along a peripheral side of claim 7, further comprising: