CN116118352A - Ink-jet printer and printing method - Google Patents

Abstract

The invention discloses an inkjet printer and a printing method, wherein the inkjet printer comprises a vehicle spraying module, a printing platform conveying module, a bottom frame module, a vehicle spraying beam module and an automatic feeding and discharging module, wherein the bottom frame module is positioned at the bottom of the inkjet printer and plays a supporting role, the printing platform conveying module is arranged above the bottom frame module, the printing platform module is connected above the printing platform conveying module, materials are placed on the printing platform module, the vehicle spraying beam module is arranged above the printing platform conveying module and the printing platform module along a first direction, the vehicle spraying beam module is arranged on the vehicle spraying beam module, the automatic feeding and discharging module is arranged behind the vehicle spraying beam module, and the automatic feeding and discharging module is used for placing or discharging the materials. The printer has the advantages of compact structure and high integration level, can realize automatic batch printing of materials, and ensures the position accuracy and the spray painting quality by firstly separating and positioning the materials and then grabbing the materials in the feeding process.

Description

Ink-jet printer and printing method

Technical Field

The invention relates to an ink-jet printer and a printing method, in particular to an ink-jet printer and a printing method capable of automatically feeding and discharging materials for batch transfer printing when plate objects such as license plates are printed in batches.

Background

At present, the ink-jet printing technology is widely applied to various industries, and particularly has new requirements in the field of ink-jet printing of plate materials to be printed, such as license plates. When designing an ink-jet printer for printing plate objects, the design is required to be specifically carried out according to the characteristics of materials to be printed and the productivity requirement.

For the materials to be printed of the plates with small size, a plurality of printers which perform inkjet printing at the same time are usually placed on a platform tabletop, and the printers with strong automation and high integration level are designed.

Considering that the plate materials to be printed (license plates) are stored for a long time, electrostatic negative pressure exists between adjacent plates, so that two adjacent plates are stuck together, when the plates are automatically fed in batches, if the plates are not subjected to separation operation, two or more plates can be sucked up at the same time by the suction disc, and therefore, the plate separation is an important work. In the prior art, some of the two plates are forced to be separated by a forced pushing mode, and some of the two plates are forced to be separated by forced blowing, and the two modes have certain defects: if a strong pushing mode is adopted, the surface of the plate is easy to scratch, because a large force is required to overcome the negative pressure friction force between the plates, namely the torque of the driving motor is required to be large, and the surface of the plate is easy to scratch; if a strong blowing mode is adopted, a plurality of plates are required to be separated at one time, so that the air quantity requirement is high, the requirements on the air quantity are not easy to meet, and the air is difficult to enter in the moment due to the fact that some adjacent plates are firmly adhered, and the plates are difficult to be thoroughly separated every time. It is not preferable to separate a plurality of plates at the same time. How to effectively and accurately separate the material to be printed is a key technical problem to be solved by the patent.

In addition, the end faces of the materials to be printed of the wad of plates cannot be completely flush, and when a plurality of plates are simultaneously fed and positioned, the plates are required to be simultaneously pushed onto a plane, so that the device is a key technical problem to be solved in the aspect of accurate positioning of the materials to be printed.

After finishing the feeding of the material to be printed, how to print quickly, how to recycle the printed material and feed in the next cycle is also a key technical problem that needs to be comprehensively considered in the patent.

Disclosure of Invention

The invention aims to overcome the limitation in the prior art and provides an inkjet printer which comprises an inkjet car module, a printing platform conveying module, a bottom frame module, an inkjet car beam module and an automatic feeding and discharging module.

The ink-jet printer is characterized by further comprising a nozzle maintenance module, wherein the nozzle maintenance module is arranged in front of one side of the beam module of the spray vehicle and is used for scraping or moisturizing the nozzle in the beam module and preventing nozzle blocking caused by dry ink of nozzle holes of the nozzle.

The ink jet printer is characterized in that the automatic feeding and discharging module further comprises a skip module, a material beam module, a material cartridge clip module, a material lifting module and a material alignment module, wherein the skip module is arranged behind the ink jet printer and is used for placing materials to be printed, the material cartridge clip module is arranged on one side of the skip module and is used for placing the materials, the material beam module is arranged on the skip module and the printing platform module along a first direction, the material lifting module is arranged on the material beam module and is used for grabbing and putting down the materials and reciprocating along the first direction, and the material alignment module is used for aligning the materials.

The ink jet printer as described above, wherein the material alignment module includes a first direction alignment module disposed on an opposite side of the material cartridge module, the first direction alignment module being configured to align the material along the first direction.

The ink-jet printer is characterized in that the first direction alignment module comprises a material separation pushing block, a pushing screw rod, a motor, a first mounting plate and a second mounting plate, wherein the first mounting plate is arranged above the first direction alignment module, the long edge of the first mounting plate is arranged in a second direction perpendicular to the first direction, the motors are symmetrically arranged on two sides of one long edge of the first mounting plate, each motor is connected with the pushing screw rod, the second mounting plate is arranged below the first direction alignment module, the long edge of the second mounting plate is also arranged in the second direction, at least two material separation pushing blocks are uniformly arranged on the opposite sides of the second mounting plate at intervals, and the material separation pushing blocks are pushed out or retracted by the motor along the first direction.

The ink-jet printer is characterized in that the material alignment module further comprises a second direction alignment module, the second direction alignment module is arranged on the material lifting module, the second direction alignment module comprises a poking piece which moves back and forth along the second direction, and the second direction alignment module is used for aligning all materials along the second direction before the materials are fed.

The ink jet printer is characterized in that the second direction alignment module comprises a baffle, an optical axis, an alignment driving motor, lifting sliding blocks, a screw shaft and a connecting frame, wherein the connecting frame is arranged into a frame body structure to play a role in connection, the lifting sliding blocks are respectively arranged outside the left side surface and the right side surface of the connecting frame, the baffle is sequentially arranged on the lower surface of the connecting frame at intervals along the first direction, the alignment driving motor is arranged in the middle of the frame of the connecting frame, the output end of the alignment driving motor is connected with the screw shaft, the screw shaft is arranged in the connecting frame along the second direction, the optical axes are respectively arranged on two sides of the screw shaft to play a role in guiding, the screw shaft and the optical axis are respectively connected with the baffle, and the baffle is driven to move along the second direction through the alignment driving motor, so that the sides of materials in each stack are pushed to reach the same alignment position along the second direction.

The ink-jet printer is characterized in that the second direction alignment module further comprises a sucker unit, the sucker unit is arranged below the connecting frame and at two sides of the baffle at intervals, and the sucker unit is used for grabbing materials.

A printing method of an inkjet printer as described above, comprising the steps of:

firstly, placing materials on a printing platform by a feeding device;

secondly, conveying the materials to the lower part of the beam module of the spraying vehicle;

thirdly, the spraying vehicle module moves along a first direction and sprays ink drops on the material;

fourth, judging whether the image-text on the material is printed, if not, executing fifth step: the material steps a preset distance along the second direction, and then the third step to the fourth step are repeatedly executed; if yes, finishing printing the materials on a desktop, and continuing to execute the sixth step;

sixthly, conveying the materials to a blanking area;

seventh, blanking operation;

eighth, judging whether all materials are printed, if not, repeating the first to eighth steps; if the judgment result is yes, all the jobs are ended.

The printing method is characterized in that the first step of placing the material on the printing platform by the feeding device comprises the steps of separating, positioning, grabbing and placing the material; the third step comprises the following specific processes: the spraying vehicle module moves from an initial position to an end position on the spraying vehicle beam module along a first direction, ink drops are sprayed to lower materials to form images and texts in the moving process, and then the spraying vehicle module returns to the initial position from the end position on the spraying vehicle beam module.

The beneficial effect of this patent lies in: the printer has compact and ingenious overall design structure, can automatically place and print a plurality of materials to be printed in batches, automatically returns the materials after printing is finished, and has strong automation and high integration level; when grabbing materials before printing, separating two adjacent materials, and enhancing grabbing accuracy; before placing the materials, positioning the materials in a first direction and a second direction, improving the position accuracy and ensuring the printing quality; when the printing is just finished, the operator can preview the printing effect in front, and the user experience is improved.

Drawings

FIG. 1 is a schematic perspective view of an ink jet printer according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a skip module according to an embodiment of the present invention;

FIG. 3 is a schematic perspective view of a material clip module according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a material separation module according to an embodiment of the invention;

FIG. 5 is a schematic perspective view of a material X-direction alignment module according to an embodiment of the present invention;

FIG. 6 is a side view of a material separation pusher according to an embodiment of the present invention;

FIG. 7 is a schematic perspective view of a material lifting module according to an embodiment of the invention;

FIG. 8 is a schematic perspective view of a Y-direction alignment module according to an embodiment of the present invention;

FIG. 9 is a bottom view of the Y-direction alignment module of FIG. 8 according to the present invention;

FIG. 10 is a schematic perspective view of a material frame module with auxiliary alignment according to an embodiment of the present invention;

FIG. 11 is a flow chart of a material loading process according to an embodiment of the present invention;

FIG. 12 is a flowchart of the overall operation of the printer according to one embodiment of the invention;

FIG. 13 is a schematic diagram of a printer according to another embodiment of the present invention;

fig. 14 is a schematic view of a printer according to still another embodiment of the present invention.

The numbers in the drawings are as follows: spout car module 1, print platform module 2, print platform transport module 3, bottom frame module 4, shower nozzle maintenance module 5, spout car beam module 6, skip module 7, material X is to aligning module 8, material beam module 9, material cartridge clip module 10, material separation module 11, material Y is to aligning module 12, material lift module 13, material unloading module 14, auxiliary alignment of material frame module 15 of material, skip frame module 71, material backup pad 72, license plate 73, control movement's plate card 74, driving motor 75, knob 76, pilot lamp 77, first backup plate 101, second backup plate 102, position sensor 103, detect material presence sensor 104, third backup plate 105, cartridge clip bottom plate 106 the blowing nozzle 111, the mounting base 112, the long hole 113, the material separation pushing block 81, the pushing screw 82, the motor 83, the first mounting plate 84, the second mounting plate 85, the screw 86, the lifting screw 131, the lifting driving motor 132, the lifting guide rail 133, the connecting plate 134, the speed reducer 135, the first baffle 121, the second baffle 122, the optical axis 123, the alignment driving motor 124, the suction cup 125, the lifting slide block 126, the lifting screw 127, the screw shaft 128, the connecting frame 129, the upper mounting plate 151, the lower mounting plate 152, the optical axis fixing block 153, the pair Ji Guangzhou 154, the feeding station P1, the printing and conveying station P2, the blanking station P3, the feeding station L1 in another embodiment, the printing and conveying station L2, and the blanking station L3.

Detailed Description

The disclosure of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of an embodiment of an ink jet printer according to the present invention, where the ink jet printer is applied to printing a plate-like object to be printed, and the object to be printed in the embodiment is a license plate 73, and the license plate 73 is a license plate of an european and american country, and this will be described below as an example. The ink-jet printer comprises an ink-jet printer module 1, a printing platform module 2, a printing platform conveying module 3, a bottom frame module 4, a spray head maintenance module 5, an ink-jet cross beam module 6 and an automatic feeding and discharging module, wherein the bottom frame module 4 is positioned at the bottom of the ink-jet printer and plays a supporting role, the printing platform conveying module 3 is installed above the bottom frame module 4, the printing platform module 2 is connected above the printing platform conveying module 3, a license plate 73 is placed on the printing platform module 2, the printing platform conveying module 3 is used for conveying the printing platform module 2 back and forth along the Y-axis direction, namely the second direction, the ink-jet cross beam module 6 is arranged above the printing platform conveying module 3 and the printing platform module 2 along the X-axis direction perpendicular to the Y-axis direction, namely the first direction, the ink-jet cross beam module 1 is installed on the ink-jet cross beam module 6, the ink-jet module 1 can reciprocate along the cross beam in the X-axis direction, and in the reciprocating process of the ink-jet module 1, the spray ink drops on the surface of an object to be printed downwards. A spray head maintenance module 5 is arranged in front of one side of the spray vehicle beam module 6, and the spray head maintenance module 5 is used for scraping or moisturizing the spray heads in the spray vehicle module 1 and preventing spray holes of the spray heads from being blocked due to dry ink. An automatic feeding and discharging module is arranged behind the spraying vehicle beam module 6, the automatic feeding and discharging module automatically grabs the license plate 73, the license plate 73 is placed at a corresponding feeding position in the printing platform module 2 to wait for transmission printing, and after printing is completed, the automatic feeding and discharging module automatically grabs and unloads the license plate 73.

As shown in fig. 1, the X-axis direction is perpendicular to the Y-axis direction, and this patent defines the X-axis direction as a first direction, the Y-axis direction as a second direction, the operator faces the carriage, the feeding and discharging area along the Y-axis direction as a rear direction, and the opposite side and the operator standing direction as a front direction.

The automatic feeding and discharging module comprises a skip module 7, a material X-direction alignment module 8, a material beam module 9, a material cartridge clip module 10, a material separation module 11, a material Y-direction alignment module 12, a material lifting module 13 and a material discharging module 14, wherein the skip module 7 is arranged at the rear of the car spraying beam module 6 and at one side of the bottom frame module 4, the skip module 7 is used for placing materials to be printed, namely license plates 73 in the embodiment, in order to improve printing efficiency, five license plates 73 are grabbed each time, two groups of license plates are grabbed respectively, the placing positions are shown in fig. 1, namely ten license plates are loaded on a table surface each time as a printing period for printing operation, the material cartridge clip module 10 is arranged at one side of the skip module 7, the material cartridge clip module 10 is used for placing each license plate 73 which is vertically placed, the material separation module 11 is arranged above the material cartridge clip module 10, and the material separation module 11 is used for enabling gaps to appear between the upper license plates and the lower adjacent license plates to be separated from each other so as to push out the license plates on the top layer; the material X-direction alignment module 8 is positioned at the opposite side of the material cartridge clip module 10, and the material X-direction alignment module 8 is used for aligning each license plate 73 along the X-axis direction; a material beam module 9 is arranged behind the spraying vehicle beam module 6, above the skip module 7 and the printing platform module 2, the material beam module 9 comprises two beams which are arranged along the X-axis direction and span the feeding area, the printing platform and the discharging area, a material lifting module 13 is arranged on the two beams of the material beam module 9, the material lifting module 13 can reciprocate along the X-axis direction along the beams, the material lifting module 13 comprises a sucker which can lift along the vertical direction, and the material lifting module 13 is used for grabbing and putting down license plates and moving along the X-axis direction; a material Y-direction alignment module 12 is further arranged on the material lifting module 13, and the material Y-direction alignment module 12 comprises a poking plate capable of moving back and forth along the Y-axis direction and is used for aligning each license plate 73 to a required position along the Y-axis direction before the license plates are fed; in addition, the automatic feeding module further comprises a material auxiliary alignment frame module 15, wherein the material auxiliary alignment frame module 15 is arranged on the other side of the material cartridge clip module 10 and is used for limiting the position of each license plate under the coaction of the material cartridge clip module 10. On the opposite side of the skip module 7 along the X-axis direction, a material discharging module 14 is disposed, and the material discharging module 14 may be designed as a conduction band structure, and conveys and collects the printed material.

The following describes the automatic feeding device of the ink-jet printer in detail with reference to fig. 2 to 9.

Fig. 2 is a schematic perspective view of a skip module 7 according to an embodiment of the present invention, the skip module 7 includes a skip frame module 71, material support plates 72, a plate card 74 for controlling movement, a driving motor 75 and a knob 76, the skip frame module 71 plays a supporting role, a plurality of material support plates 72 are disposed on an upper portion of the skip frame module 71, five material support plates 72 are disposed in this embodiment, a stack of license plates 73 is disposed on each material support plate 72, the plate card 74 for controlling movement and the driving motor 75 are disposed in the skip frame module 71, the number of the driving motor 75 is consistent with the number of the material support plates 72, the driving motor 75 is used for driving the material support plates 72 to perform ascending and descending movements along a vertical direction, the knob 76 and the indicator lamp 77 are mounted outside the skip frame module 71, the number of the knob 76 and the indicator lamp 77 are consistent with the number of the material support plates 72, and are in one-to-one correspondence, and the driving motor 75 is controlled by rotating the knob 76 to drive the material support plates 72 to perform ascending and descending movements along a vertical direction.

Fig. 3 is a schematic perspective view of a material clip module 10 according to an embodiment of the present invention, the material clip module 10 sets a corresponding number of clip units according to the number of material support plates 72, each clip unit includes a first back plate 101, a second back plate 102, a position sensor 103, a sensor 104 for detecting whether a material is present or not, a third back plate 105 and a clip bottom plate 106, the first back plate 101 is a rectangular back plate vertically disposed, a broadside direction of the first back plate 101 is parallel to a Y axis direction, a long edge of the first back plate 101 is vertically disposed, two vertically long edges of the first back plate 101 are respectively connected to the second back plate 102 and the third back plate 105, a clip bottom plate 106 is connected to a bottom edge of the first back plate 101, a sensor 104 for detecting whether the material is present or not is installed in each clip unit, the sensor 104 is used for detecting whether the material (in this embodiment) is present or not, a position sensor 103 is disposed on an upper portion of the third back plate 105, the position sensor 103 is used for detecting whether the material is present or not, and when the position sensor 103 is used for detecting the material is used for triggering a position sensor, and a license plate signal is triggered to stop signal when the material lifting is triggered.

Fig. 4 is a schematic perspective view of a material separation module 11 according to an embodiment of the present invention, where the material separation module 11 includes a mounting seat 112 and a plurality of blowing nozzles 111, the number of the blowing nozzles 111 is consistent with that of the material supporting plates 72, five of the blowing nozzles 111 are provided in this embodiment, the mounting seat 112 is a vertically bent sheet metal part, the length of the mounting seat 112 is arranged along the Y-axis direction, long holes 113 with the same number as that of the blowing nozzles 111 are provided on a bending surface of the mounting seat 112 in the vertical direction, a blowing nozzle 111 is installed on each long hole 113, and the blowing nozzle 111 is used for blowing air to a gap between a license plate on the top layer and an adjacent license plate below the blowing nozzle 111, so as to separate the two.

Fig. 5 is a schematic perspective view of a material X-direction alignment module 8 according to an embodiment of the present invention, where the material X-direction alignment module 8 includes a material separation pushing block 81, a pushing screw 82, a motor 83, a first mounting plate 84 and a second mounting plate 85, the first mounting plate 84 is disposed above the material X-direction alignment module 8, the length of the first mounting plate 84 is disposed along the Y-axis direction, two motors 83 are symmetrically disposed on two sides of a long side of the first mounting plate 84, each motor 83 is connected to the pushing screw 82, and the dual-motor dual-screw design is used to prevent two sides from being deflected due to uneven force of pushing multiple materials at a time, and prevent the end surfaces of the materials from being out of alignment. The second mounting plate 85 is arranged below the material X-direction alignment module 8, the long edge of the second mounting plate 85 is also arranged along the Y-axis direction, a plurality of material separation pushing blocks 81 are uniformly arranged on the second mounting plate 85 and on opposite sides of the motor 83 at intervals, the quantity of the material separation pushing blocks 81 is consistent with that of the material supporting plates 72, five material separation pushing blocks are arranged in the embodiment, the motor 83 drives the pushing screw 82 to rotate so as to drive the screw 86 connected with the screw 82 to rotate, thereby driving the second mounting plate 85 connected with the screw 86 to move, and finally driving the material separation pushing blocks 81 on the second mounting plate 85 to push out or retract along the X-axis direction. As shown in FIG. 6, in the side view of the material separation pushing block 81, a step is formed at the bottom end of the material separation pushing block 81, in this embodiment, the depth of the step is 1mm, and since the material is a license plate and the thickness thereof is 1.2-1.3mm, the design of the step can ensure that only one piece is pushed when the license plate is pushed, and the depth of the step at the bottom end of the material separation pushing block 81 can be correspondingly designed according to the thickness of an object to be printed in different practical applications, which is not particularly limited in the invention.

Fig. 7 is a schematic three-dimensional structure of a material lifting module 13 according to an embodiment of the present invention, where the material lifting module 13 includes a lifting screw rod 131, a lifting driving motor 132, a lifting guide rail 133, a connecting plate 134 and a speed reducer 135, the long edge of the connecting plate 134 is arranged along the Y-axis direction, a lifting driving motor 132 is installed above the connecting plate 134, the lifting driving motor 132 is connected with a speed reducer 135, an output end of the speed reducer 135 is connected with the lifting screw rod 131, and the lifting guide rails 133 are respectively arranged at two ends of the material lifting module 13 to play a guiding role. The lifting guide rail 133 of the material lifting module 13 is matched with the lifting slide block 126 (shown in fig. 8) in the material Y-direction alignment module 12, the lifting screw rod 131 is driven to rotate by the lifting driving motor 132, and finally the lifting screw nut 127 matched with the lifting screw rod 131 and the whole material Y-direction alignment module 12 are driven to perform lifting motion in the vertical direction.

The structure of the material Y alignment module 12 is shown in fig. 8-9, the material Y alignment module 12 includes a first baffle 121, a second baffle 122, an optical axis 123, an alignment driving motor 124, a suction cup 125, a lifting slider 126, a lifting screw 127, a screw shaft 128 and a connecting frame 129, the connecting frame 129 is provided with a frame structure to play a role in connection, the outer sides of the left and right sides of the width edge of the connecting frame 129 are respectively provided with a lifting slider 126, the lifting slider 126 is matched with a lifting guide rail 133 of the material lifting module 13, three first baffles 121 and one second baffle 122 are sequentially arranged on the lower surface of the connecting frame 129 at intervals along the X axis direction, an alignment driving motor 124 is arranged in the middle space of the frame of the connecting frame 129, the output end of the alignment driving motor 124 is connected with a screw shaft 128 along the Y axis direction, two sides of the screw shaft 128 are respectively provided with a guiding role in the screw shaft 123, the screw shaft 128 and the optical axis 123 are respectively connected with three first baffles 121 and one second baffles 122, and the two baffles 122 are respectively pushed by the first baffles 122 and the second baffles 122 along the Y axis direction, thereby the two baffles are respectively pushed by the first baffles 122 and the second baffles are respectively aligned along the Y axis direction, and the two baffles are respectively driven by the first baffles and the second baffles 122 along the directions are aligned along the directions. In the embodiment, each group of sucking disc units comprises two sucking discs 125, each group of sucking disc units grabs a license plate, and the number of the sucking disc units is consistent with that of the material supporting plates 72, and five groups of sucking disc units are arranged. The middle part above the material Y-direction alignment module 12 is also provided with a lifting screw 127, the lifting screw 127 is connected with a lifting screw rod 131 in the material lifting module 13, and the material lifting module 13 can control the integral lifting of the material Y-direction alignment module 12.

Fig. 10 is a schematic perspective view of a material auxiliary alignment frame module 15 according to an embodiment of the present invention, where the material auxiliary alignment frame module 15 and the material clip module 10 are respectively disposed at two ends of a license plate in a length direction, the material auxiliary alignment frame module 15 includes an upper mounting plate 151, a lower mounting plate 152, an optical axis fixing block 153, and a pair Ji Guangzhou, the upper mounting plate 151 and the lower mounting plate 152 are mounted along a Y-axis direction, a plurality of pairs Ji Guangzhou are disposed between the upper mounting plate 151 and the lower mounting plate 152, an alignment optical axis 154 is disposed along a vertical direction, and upper and lower ends of the alignment optical axis 154 are respectively connected to the upper mounting plate 151 and the lower mounting plate 152 through the optical axis fixing block 153. In the alignment operation of the license plate in the Y-axis direction, one end of the license plate in the length direction is propped against the alignment optical axis 154, and the auxiliary alignment material frame module 15 is used for carrying out auxiliary alignment positioning on one end of the license plate in the length direction.

The following describes a process of automatically feeding an object to be printed according to an embodiment of the present invention according to fig. 11, in which the object to be printed is taken as a license plate to specifically describe: the license plates are in a series and are placed beside the automatic feeding module, because electrostatic negative pressure exists between the license plates, adjacent license plates can be adhered, if the adjacent license plates are not separated, two or more license plates can be sucked up by the sucking disc at the same time, and therefore, it is critical to accurately separate the uppermost license plate; in addition, the license plate separation process can possibly lead to position deviation, so that the position of the license plate at the top layer needs to be finely adjusted after the license plate at the top layer is separated, the license plates fed on the printing platform at each time are ensured to be at the same position and then are grabbed, and the printing precision is ensured.

The specific working process of license plate feeding is as follows:

step S1, firstly, an operator places a material to be printed, namely a license plate to be printed, specifically: the knob 76 of the rotary skip module 7 of the operator controls the driving motor 75 to drive the material supporting plate 72 to descend to the lowest origin, then the operator puts a stack of license plates on the material supporting plate 72 and inserts the license plates into the material cartridge clip module 10 at the same time, the length direction of the license plates is parallel to the X-axis direction, the width direction of the license plates is arranged at intervals along the Y-axis direction, and in the embodiment, the skip module 7 can put five stack of license plates at the same time, namely, the five license plates are set into a group to carry out feeding operation.

Step S2, then the material rises to a grabbing position, specifically: the driving motor 75 drives the material supporting plate 72 to drive the license plate to ascend, when the license plate at the top ascends and reaches the position of the position sensor 103, the sensor is triggered, the license plate stops ascending, the position is defined as a license plate grabbing position, at this time, one wide edge of the license plate is attached to the first backup plate 101 in the material cartridge clip module 10, a step surface (or an inclined surface) is arranged at the top end of the first backup plate 101, the bottom surface of the uppermost license plate is leveled with the step surface (or positioned on the inclined surface), the surface of the wide edge of the other side of the license plate is pressed by a step below the material separation pushing block 81 in the material X alignment module 8, the thickness of the license plate is designed corresponding to the depth of the step, and the fact that only one license plate at the top end is pushed at each time is ensured. A position sensor 103 is correspondingly arranged on each license plate, five position sensors 103 are arranged in the embodiment, and the installation height of each position sensor 103 is kept consistent; meanwhile, whether the sensor 104 detects the existence of the license plate on the skip car or not is needed to detect whether the license plate exists in the skip car or not in the cartridge clip module 10, if no license plate exists in the skip car, the feeding process is stopped, and an operator needs to put the material into the skip car and then continue to operate.

Step S3, separating the top material, specifically: the blowing valve of the blowing nozzle 111 in the material separation module 11 is opened, the blowing nozzle 111 penetrates through the rectangular slot of the first backup plate 101 in the material cartridge clip module 10 to blow air to the middle of the first license plate at the top and the second license plate adjacent to the first license plate below the first license plate, the angle of the blowing nozzle 111 is adjustable, and an oblique angle is formed at the position of the blowing nozzle 111, so that the blowing nozzle 111 faces the space between the first license plate at the top and the second license plate adjacent to the second license plate below the first license plate, and accordingly, the blowing air can be blown to the space between the two license plates as much as possible to eliminate negative pressure.

Step S4, pushing out a top material, specifically: the material separation pushing block 81 in the material X-direction alignment module 8 pushes out the top license plate along the X-axis direction towards the direction close to the printing platform module 2, the pushing distance is about 8mm, the blowing nozzle 111 continuously blows in the pushing process, after the top license plate is displaced, wind can completely enter from the lower part of the top license plate, negative pressure between the two license plates is thoroughly eliminated, and therefore the risk of scratching the surface of the material in the process of pushing out the top license plate is avoided. At this time, the license plate on the top layer is completely separated and pushed out, and meanwhile, in the pushing process, the license plate is pushed onto the first backup plate 101 by the material separation pushing block 81, namely, the alignment operation of the license plate in the X-axis direction is performed, so that the license plate is ensured to be consistent in position in the X-axis direction. Then the blowing nozzle 111 is closed and the material separation pushing block 81 is returned to the initial position.

S5, carrying out Y-axis direction alignment operation on the materials, wherein the Y-axis direction alignment operation specifically comprises the following steps: the material Y-direction alignment module 12 and the material lifting module 13 move to the upper part of the license plate along two axes (X-axis direction) of the material beam module 9 through a linear motor, the lifting driving motor 132 drives the material Y-direction alignment module 12 to descend until the suckers 125 contact the upper surface of the license plate, at this time, each first baffle plate 121 and each second baffle plate 122 in the material Y-direction alignment module 12 are positioned on the right side of the left four license plates, the alignment driving motor 124 drives each first baffle plate 121 and each second baffle plate 122 to move towards the third backup plate 105 along the Y-axis direction until one side of the left end surface of the license plate is propped against the third backup plate 105, the other side of the left end surface of the license plate is propped against the optical axis 154, and at this time, all the left four license plates are propped against each other; then, the alignment driving motor 124 drives each of the first baffle 121 and the second baffle 122 to move toward the second backup plate 102 along the Y-axis direction until one end of the rightmost fifth license plate is attached to the second backup plate 102 and the other end is attached to the optical axis 154, and the alignment operation of the group of license plates in the Y-axis direction is completed.

Step S6, grabbing materials, specifically: the suction cup 125 is opened to suck a group of five license plates, the lifting driving motor 132 in the material lifting module 13 drives the material Y to rise upwards along the vertical direction, after rising to a preset height position, the material lifting module 13 and the material Y to move to the upper part of the printing platform module 2 along the material beam module 9 (X-axis direction) through the driving of the linear motor, then the lifting driving motor 132 in the material lifting module 13 drives the material Y to descend along the vertical direction, after descending to a platform appointed position in the printing platform module 2, the suction cup 125 deflating valve is opened, the suction cup 125 deflates to separate the license plates from the material Y, and a group of license plates are fed. The elevation driving motor 132 in the material elevation module 13 again drives the material Y-direction alignment module 12 to rise to a preset height in the vertical direction.

Step S7, judging whether all the materials to be printed on a desktop are fed completely, if yes, continuing the follow-up transfer printing flow; if not, repeating the steps S2-S6 until the license plates to be printed on each desktop are completely loaded.

In this embodiment, ten license plates are placed on a platform, and the automatic feeding module grabs five license plates each time to perform automatic feeding operation, and completes the operation in two times. The process comprises the steps of separating adjacent license plates, positioning the license plates (positioning in the X-axis direction and positioning in the Y-axis direction), and automatically grabbing and putting down the license plates.

After the license plate is placed at the correct position of the printing platform, the next transmission and printing operation and the subsequent blanking operation are carried out. The overall operation of the printer according to an embodiment of the present invention will be described with reference to fig. 12.

In step S01, the feeding device places the material to be printed on the printing platform, namely the process of S1-S7.

Step S02, the material to be printed is transferred to the lower part of the beam module of the spraying vehicle, specifically: the printing platform module 2 with the material to be printed is conveyed to the lower part of the spraying vehicle beam module 6 along the Y-axis direction by the printing platform conveying module 3.

Step S03, the spraying vehicle module moves along a first direction and sprays ink drops on materials, specifically: the spray car module 1 on the spray car beam module 6 moves from an initial position to a final position along the X-axis direction, ink drops are sprayed on the lower material to form a required image and text in the moving process, and then the spray car module 1 returns to the initial position from the final position on the spray car beam module 6.

Step S04, judging whether the image-text on the material to be printed is printed, if not, executing step S05, and stepping the material along the second direction for a preset distance, wherein the method specifically comprises the following steps: the printing platform conveying module 3 drives the material to step a preset distance along the Y-axis direction, and then the steps S03-S04 are repeatedly executed; if yes, the printing of the material on the desktop is completed, and step S06 is continuously executed, at this time, the printed material is transferred to the forefront of the printer, and the operator can preview whether the printing effect meets the requirement through the transparent outer cover.

Step S06, the material is transferred to the blanking area, specifically: the printing platform module 2 is conveyed back to the starting position after feeding by the printing platform conveying module 3 along the Y-axis direction.

Step S07, blanking operation, specifically: at this time, the material lifting module 13 and the material Y-direction alignment module 12 are positioned above the printed license plates, the material lifting module 13 and the material Y-direction alignment module 12 are lowered to the appointed position, the suction valve of the suction disc is opened, the suction disc ascends after sucking the license plates, the suction disc moves onto the transmission belt of the license plate blanking module 14 along the license plate moving beam module 9 to transport the license plates to the required position, five license plates are grabbed each time in blanking operation and placed on the transmission belt, and ten license plates are grabbed twice to finish blanking operation.

Step S08, judging whether all the materials to be printed are printed, if not, repeating the steps S01-S08; if the judgment result is yes, all the jobs are ended.

It should be noted that, the present invention is not limited to the placement number and the arrangement manner of the positions of the materials, for example, as shown in fig. 13, the feeding station P1 may grasp four materials each time, the long-side direction of the materials is parallel to the Y-axis direction, eight materials are placed side by side on each platform, and then are transferred and printed by the printing and transferring station P2, and after the printing of the materials on one platform is completed, the materials are discharged by the discharging station P3.

The printer comprises a feeding station, a printing and conveying station and a discharging station, the invention does not limit the setting area of each station, for example, as shown in fig. 14, the feeding station L1 is arranged at one side of the front of the printer, the material is conveyed and printed in the printing and conveying station L2 after being placed by the feeding device, after the printing is finished, the material is discharged by the discharging station L3, the discharging station L3 is arranged at the other side of the front of the printer and turns 90 degrees with the printing and conveying station L2, so that the printer is suitable for different field requirements. Of course, other modes of position change can be performed according to actual needs, and the position change does not deviate from the protection scope of the invention.

In addition, other inkjet printing methods, such as a skip module performing a step motion or a bi-directional inkjet printing method, may be used in addition to the inkjet printing process described in the above embodiments, which is not particularly limited in the present invention.

It should be noted that the object to be printed in the present invention may be any similar sheet-shaped or plate-shaped object to be printed, except for the license plate, which is not particularly limited in the present invention. Any modifications made to the embodiments of the present invention do not depart from the spirit of the invention and the scope of the present invention as set forth in the appended claims.

Claims (10)

1. The utility model provides an inkjet printer, including spouting the car module, the print platform module, print platform transfer module, the underframe module, spout car crossbeam module and automatic unloading module, the underframe module is located the bottom of inkjet printer and plays the supporting role, install print platform transfer module in underframe module top, connect print platform module in print platform transfer module top, place the material on the print platform module, print platform transfer module is used for carrying print platform module along the second direction, in print platform transfer module and print platform module top, set up a car crossbeam module along the first direction with the second direction vertically, spout the car crossbeam module of installing, spout car module and carry out the round trip motion of first direction along spouting the crossbeam in the car crossbeam module, a serial communication port, set up an automatic unloading module in the rear of spouting car crossbeam module, automatic unloading module is used for laying or unloading of material, automatic unloading module includes the material separation module, the material separation module sets up in the material side top for make appear the clearance between the upper and lower adjacent material, and each other separate the material that pushes away the top layer.

2. The ink jet printer of claim 1, further comprising a nozzle maintenance module disposed in front of one side of the beam module of the vehicle for scraping or moisturizing the nozzle in the vehicle module to prevent the nozzle from clogging due to dry-out of the nozzle orifice ink.

3. The inkjet printer of claim 1, wherein the automatic loading and unloading module further comprises a skip module, a material beam module, a material clip module, a material lifting module, and a material alignment module, wherein the skip module is disposed behind the inkjet printer, the skip module is used for placing a material to be printed, the material clip module is disposed on one side of the skip module, the material clip module is used for placing the material, the material beam module is disposed above the skip module and the printing platform module in a first direction, the material lifting module is disposed above the material beam module, the material lifting module is used for picking up and dropping the material and reciprocating along the first direction, and the material alignment module is used for aligning the material.

4. The inkjet printer of claim 3, wherein the material alignment module comprises a first direction alignment module disposed opposite the material cartridge module, the first alignment module configured to align the material in the first direction.

5. The ink jet printer of claim 4, wherein the first direction alignment module comprises a material separation pushing block, a pushing screw, a motor, a first mounting plate and a second mounting plate, the first mounting plate is arranged above the first direction alignment module, the long edge of the first mounting plate is arranged in a second direction perpendicular to the first direction, the motors are symmetrically arranged on two sides of one long edge of the first mounting plate, each motor is connected with the pushing screw, the second mounting plate is arranged below the first direction alignment module, the long edge of the second mounting plate is also arranged along the second direction, at least two material separation pushing blocks are uniformly arranged on the opposite sides of the second mounting plate at intervals, and the material separation pushing blocks are pushed out or retracted along the first direction by the motor.

6. The inkjet printer of claim 3, wherein the material alignment module further comprises a second direction alignment module disposed on the material lifting module, the second direction alignment module comprising a paddle that reciprocates in a second direction, the second direction alignment module for aligning each material in the second direction prior to material loading.

7. The inkjet printer of claim 6, wherein the second direction alignment module comprises a baffle, an optical axis, an alignment driving motor, lifting sliders, a screw shaft and a connecting frame, the connecting frame is arranged into a frame structure for connection, the lifting sliders are respectively arranged outside the left side surface and the right side surface of the width edge of the connecting frame, the baffle is sequentially arranged on the lower surface of the connecting frame at intervals along the first direction, the alignment driving motor is arranged in the middle of the frame of the connecting frame, the output end of the alignment driving motor is connected with the screw shaft, the screw shaft is arranged in the connecting frame along the second direction, the two sides of the screw shaft are respectively provided with an optical axis for guiding, the screw shaft and the optical axis are respectively connected with the baffle, and the baffle is driven to move along the second direction by the alignment driving motor, so that the sides of each material are pushed to reach the same alignment position along the second direction.

8. The ink jet printer of claim 7, wherein the second direction alignment module further comprises a suction cup unit, the suction cup unit being disposed below the connection frame and spaced apart from two sides of the baffle, the suction cup unit being configured to grasp a material.

9. The printing method for an inkjet printer according to claim 1, comprising the steps of:

firstly, placing materials on a printing platform by a feeding device;

secondly, conveying the materials to the lower part of the beam module of the spraying vehicle;

thirdly, the spraying vehicle module moves along a first direction and sprays ink drops on the material;

fourth, judging whether the image-text on the material is printed, if not, executing fifth step: the material steps a preset distance along the second direction, and then the third step to the fourth step are repeatedly executed; if yes, finishing printing the materials on a desktop, and continuing to execute the sixth step;

sixthly, conveying the materials to a blanking area;

seventh, blanking operation;

eighth, judging whether all materials are printed, if not, repeating the first to eighth steps; if the judgment result is yes, all the jobs are ended.

10. The printing method of claim 9 wherein the first step of the loading means placing the material onto the printing platform comprises separating, positioning, gripping and placing the material; the third step comprises the following specific processes: the spraying vehicle module moves from an initial position to an end position on the spraying vehicle beam module along a first direction, ink drops are sprayed to lower materials to form images and texts in the moving process, and then the spraying vehicle module returns to the initial position from the end position on the spraying vehicle beam module.

Images