Digital inkjet printer and substrate transport device therefor

Abstract

The embodiment of the present application provides a digital inkjet plotter and a substrate conveying device thereof, the device comprises a conveying mechanism, a deviation rectifying mechanism comprising two deviation rectifying base plates, a deviation rectifying driving element, a first movable blocking rod and a first blocking driving element, and a control module comprising a control switch, a first sensor and a controller, the controller is used for controlling the first blocking driving element to drive the first movable blocking rod to move to a first blocking position and controlling the conveying mechanism to start working in response to the starting signal, controlling the conveying mechanism to pause and controlling the deviation rectifying driving element to drive the deviation rectifying base plates to move to push the substrate to implement deviation rectification in response to the first arrival signal, and controlling the first blocking driving element to drive the first movable blocking rod to move to a first release position and controlling the conveying mechanism to start to convey the rectified substrate to the plotter in response to the printing signal. The embodiment can effectively improve the printing efficiency and ensure the printing effect.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of printing equipment, and in particular to a digital inkjet printer and a substrate conveying device thereof. Background Art

[0002] Existing digital inkjet printers for printing on thin sheet-like substrates (such as glass, acrylic, or wood) typically include an inkjet printer for printing on the substrate and a substrate conveyor for guiding the substrate through the inkjet printer. During operation, the printer manually loads the substrate onto the feed end of the substrate conveyor, which then transports it to the bottom of the inkjet printer for printing.

[0003] However, during the specific implementation, the inventor found that it was difficult to ensure the accurate alignment of each substrate due to the need to manually load the substrate for loading. When the substrate was transported to the bottom of the inkjet device and printed, the patterns printed on each substrate were uneven. Moreover, in actual operation, it was usually necessary to wait for the substrate conveying device to transport the substrates that had been loaded and printed in the previous batch before the next batch of loading could begin. Moreover, when loading, the substrate conveying device and the inkjet device needed to be suspended, and then manual loading and loading were carried out. Finally, the substrate conveying device and the inkjet device needed to be started again to transport and print the newly loaded substrate. The overall printing efficiency was relatively low and the printing speed was slow. Summary of the Invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a substrate conveying device for a digital inkjet printer, which can effectively ensure the printing effect.

[0005] A further technical problem to be solved by the embodiments of the present invention is to provide a digital inkjet printer that can effectively ensure printing effects.

[0006] In order to solve the above technical problems, the embodiment of the present invention first provides the following technical solution: a substrate conveying device for a digital inkjet printer, comprising:

[0007] a conveying mechanism, configured to receive a substrate and convey the substrate;

[0008] At least one deflection correction mechanism mounted above the conveying path of the substrate and located upstream of the inkjet printer's inkjet device, the deflection correction mechanism comprising two deflection correction substrates arranged parallel to each other and extending along the substrate conveying direction to form a deflection correction channel, a deflection correction drive for driving at least one of the two deflection correction substrates to reciprocate relative to the other deflection correction substrate, a first movable blocking rod assembled at an exit of the deflection correction channel for blocking the substrate in the deflection correction channel, and a first blocking drive for driving the first movable blocking rod to move between a first blocking position and a first release position; and

[0009] a control module comprising a control switch for generating and outputting a start signal and a printing signal, a first sensor assembled at a position of the first movable stopper for outputting a first arrival signal when detecting that a substrate enters into the deviation correcting passage and approaches the first movable stopper, and a controller connected with the control switch, the first sensor, the deviation correcting drive, the first stop drive and the conveying mechanism respectively, the controller being configured to control the first stop drive to drive the first movable stopper to move to a first stop position and control the conveying mechanism to start working in response to the start signal, control the conveying mechanism to pause and control the deviation correcting drive to drive the deviation correcting substrate to move to push the substrate to implement deviation correction in response to the first arrival signal, and control the first stop drive to drive the first movable stopper to move to a first release position and control the conveying mechanism to start to convey the deviation-corrected substrate to the printing device in response to the printing signal.

[0010] Further, the substrate conveying device further comprises a guiding mechanism assembled at a feeding end of the conveying mechanism and located at an upstream side of the deviation correcting mechanism, the guiding mechanism comprising two guide plates arranged in parallel with a predetermined interval and extending along a substrate conveying direction to form a guiding passage, a second movable stopper arranged at an outlet of the guiding passage, and a second stop drive for driving the second movable stopper to move between a second stop position and a second release position, the interval of the two guide plates being not less than a width of the substrate.

[0011] The control module further comprises a second sensor arranged at the outlet of the guiding passage and connected with the controller, the second sensor emitting a second arrival signal when detecting that the substrate travels from the guiding passage and a tail end of the substrate has moved out of the guiding passage; the controller is further configured to control the second stop drive to drive the second movable stopper to move to the second release position in response to the start signal and control the second stop drive to drive the second movable stopper to move to the second stop position in response to the second arrival signal.

[0012] Further, the conveying mechanism comprises a feeding conveying section and a printing conveying section connected with an output end of the feeding conveying section respectively and independently controlled by the controller respectively, the controller being configured to control the feeding conveying section and the printing conveying section to start working in response to the start signal, control the feeding conveying section and the printing conveying section to pause working in response to the first arrival signal, and control the printing conveying section to start working in response to the printing signal.

[0013] Further, the substrate conveying device further comprises a crossbeam arranged at the joint of the feeding conveying section and the printing conveying section, the guiding mechanism is arranged on the crossbeam at the side of the feeding conveying section, and the deviation rectifying base plate and the deviation rectifying driving member of the deviation rectifying mechanism are arranged on the crossbeam at the side of the printing conveying section.

[0014] Further, the conveying mechanism further comprises a discharging conveying section connected to the output end of the printing conveying section and independently controlled by the controller, and the control module further comprises a third sensor arranged at the joint of the printing conveying section and the discharging conveying section, the third sensor sends a third arrival signal when detecting the front end edge of the substrate output by the printing conveying section, and the controller controls the discharging conveying section to start working in response to the third arrival signal.

[0015] Further, the control module further comprises a fourth sensor arranged at the output end of the discharging conveying section, the fourth sensor sends a fourth arrival signal when detecting the front end edge of the substrate output by the discharging conveying section, and the controller controls the discharging conveying section to pause working in response to the fourth arrival signal.

[0016] Further, the substrate conveying device further comprises a prompting module connected to the controller and used for sending a prompt information to remind the operator, the third sensor further sends a fifth arrival signal when detecting the end edge of the substrate output by the printing conveying section, and the controller controls the prompting module to send the prompt information in response to the fifth arrival signal.

[0017] Further, the third sensor also sends the start signal when detecting the end edge of the substrate output by the printing conveying section.

[0018] Further, a plurality of guiding mechanisms and deviation rectifying mechanisms are arranged side by side in the width direction of the conveying path of the substrate, the plurality of guiding mechanisms and the plurality of deviation rectifying mechanisms are arranged one by one respectively, each deviation rectifying mechanism shares one first stop driving member and all the first movable stop rods are connected as a whole, each guiding mechanism shares one second stop driving member and all the second movable stop rods are connected as a whole, one of the guide plates in each guiding mechanism is further connected to the deviation rectifying driving member of the corresponding deviation rectifying mechanism and reciprocally moves relative to the other guide plate under the driving of the deviation rectifying driving member, one first sensor is arranged at each deviation rectifying mechanism, and one second sensor is arranged at at least one guiding mechanism.

[0019] In another aspect, to solve the above further technical problem, the embodiment of the present application provides the following technical solution: a digital inkjet plotter, comprising a substrate conveying device and an inkjet device arranged in the middle section of the substrate conveying path of the substrate conveying device, wherein the substrate conveying device is the substrate conveying device of the digital inkjet plotter according to any one of the above.

[0020] After the above technical solution is adopted, the embodiment of the present application has at least the following beneficial effects: the digital inkjet plotter of the embodiment of the present application is additionally provided with a deviation rectifying mechanism and a control module. First, the control switch of the control module sends a starting signal to the controller, the controller responds to the starting signal to control the first stop driving member to drive the first movable blocking rod to move to the first stop position, thereby blocking the outlet of the deviation rectifying channel, and the conveying mechanism starts to convey the substrate forward. Then, when the first sensor assembled at the position of the first movable blocking rod detects that the substrate enters the deviation rectifying channel and approaches the first movable blocking rod, the first sensor outputs a first arrival signal, and then the controller responds to the first arrival signal to control the conveying mechanism to stop conveying the substrate and control the deviation rectifying driving member to drive the deviation rectifying substrate to move to push the substrate to implement deviation rectification. In addition, the front end edge in the deviation rectifying channel abuts against the first movable blocking rod under the conveying of the conveying mechanism, thereby realizing alignment correction of the side and the end, respectively. Finally, when printing is needed, the control switch sends a printing signal to the controller, the controller responds to the printing signal to control the first stop driving member to drive the first movable blocking rod to move to the first release position, thereby opening the outlet of the deviation rectifying channel, and the conveying mechanism is started again to convey the deviated substrate to the inkjet device, thereby effectively ensuring the printing effect. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective structural schematic diagram of an optional embodiment of the digital inkjet plotter of the present application.

[0022] Figure 2 It is a perspective structural schematic diagram of an optional embodiment of the digital inkjet plotter of the present application.

[0023] Figure 3 It is a top view schematic diagram of an optional embodiment of the digital inkjet plotter of the present application.

[0024] Figure 4 It is a structural schematic diagram of the feeding conveying section and the deviation rectifying mechanism of an optional embodiment of the digital inkjet plotter of the present application.

[0025] Figure 5 It is a structural schematic diagram of the printing conveying section and the first movable blocking rod assembly of an optional embodiment of the digital inkjet plotter of the present application.

[0026] Figure 6 It is a control principle block diagram of an optional embodiment of the digital inkjet plotter of the present application. DETAILED DESCRIPTION

[0027] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following exemplary embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention. Moreover, the embodiments and features in the embodiments of the present application may be combined with each other unless there is a conflict.

[0028] like Figures 1-6 As shown, an optional embodiment of the present invention provides a substrate conveying device for a digital inkjet printer, comprising:

[0029] The conveying mechanism 1 is used to receive the substrate A and convey the substrate A;

[0030] At least one deflection correction mechanism 5 mounted above the conveying path of the substrate A and located upstream of the inkjet printer's inkjet device 3, the deflection correction mechanism 5 comprising two deflection correction substrates 50 arranged parallel to each other and extending along the conveying direction of the substrate A to form a deflection correction channel 5a, a deflection correction driving member 52 for driving at least one of the two deflection correction substrates 50 to reciprocate relative to the other deflection correction substrate 50, a first movable blocking rod 54 assembled at the exit of the deflection correction channel 5a for blocking the substrate A in the deflection correction channel 5a, and a first blocking driving member 56 for driving the first movable blocking rod 54 to move between a first blocking position and a first release position; and

[0031] The control module 6 includes a control switch 60 for generating and outputting a start signal and a print signal, a first sensor 61 assembled at the position of the first movable baffle 54 for outputting a first in-position signal when detecting that the substrate A enters the correction channel 5a and approaches the first movable baffle 54, and a controller 63 respectively connected to the control switch 60, the first sensor 61, the correction drive 52, the first stopping drive 56 and the conveying mechanism 1, the controller 63 is used to control the first stopping drive 56 to drive the first movable baffle 54 to move to the first stopping position and control the conveying mechanism 1 to start working in response to the start signal, control the conveying mechanism 1 to pause in response to the first in-position signal and control the correction drive 52 to drive the correction substrate 50 to move to push the substrate A to perform correction, and control the first stopping drive 56 to drive the first movable baffle 54 to move to the first release position in response to the print signal and control the conveying mechanism 1 to start and convey the corrected substrate A to the inkjet device 3.

[0032] The digital inkjet printer of the embodiment of the present invention is provided with a correction mechanism 5 and a control module 6. First, the control switch 60 of the control module 6 sends a start signal to the controller 63. In response to the start signal, the controller 60 controls the first stop driving member 56 to drive the first movable blocking rod 54 to move to the first blocking position, thereby blocking the exit of the correction channel 5a, and controls the conveying mechanism 1 to start conveying the substrate A forward. Then, when the first sensor 54 assembled at the position of the first movable blocking rod 54 detects that the substrate A enters the correction channel 5a and approaches the first movable blocking rod 54, the first sensor 54 outputs a first in-position signal, and then the controller 63 controls the first in-position signal in response to the first in-position signal. The conveying mechanism 1 stops conveying the substrate A and controls the deflection correction drive 52 to drive the deflection correction substrate 50 to move to push the substrate A to perform deflection correction, and the front end edge located in the deflection correction channel 5a abuts against the first movable baffle 54 under the conveyance of the conveying mechanism 1, thereby realizing lateral and end alignment correction respectively. Finally, when printing is required, the control switch 60 sends a print signal to the controller 63. The controller 63 responds to the print signal and controls the first stop drive 56 to drive the first movable baffle 54 to move to the first release position, opening the exit of the deflection correction channel 5a. At the same time, the conveying mechanism 1 starts again to convey the deflected substrate A to the inkjet device 3, which can effectively ensure the printing effect.

[0033] In an optional embodiment of the present invention, the substrate conveying device further includes a guide mechanism 7 assembled at the loading end of the conveying mechanism 1 and located upstream of the correcting mechanism 5. The guide mechanism 7 includes two guide plates 70 arranged in parallel at a predetermined interval and extending along the conveying direction of the substrate A to form a guiding channel 7a, a second movable blocking rod 72 provided at the exit of the guiding channel 7a, and a second blocking driving member 74 for driving the second movable blocking rod 72 to move between a second blocking position and a second release position. The interval between the two guide plates 70 is not less than the width of the substrate A.

[0034] The control module 6 also includes a second sensor 64 arranged at the exit of the guide channel 7a and connected to the controller 63. The second sensor 64 sends a second in-position signal when it detects that the substrate A moves from the guide channel 7a and the tail end of the substrate A has moved out of the guide channel 7a; the controller 63 is also used to control the second stopping drive 74 to drive the second movable blocking rod 72 to the second release position in response to the start signal and control the second stopping drive 74 to drive the second movable blocking rod 72 to the second stopping position in response to the second in-position signal.

[0035] In this embodiment, by adding a guiding mechanism 7, when the substrate A is manually loaded into the guiding channel 7a, one side edge and the front end edge of the substrate A can be respectively pressed against a guide plate 70 and a second movable blocking rod 72 to achieve manual preliminary alignment of the substrate A. When the manual loading is completed, the manual operation sends a start signal to the controller 63 through the control switch 60. At this time, the controller 63 controls the first blocking driving member 73 to drive the second movable blocking rod 72. The second movable blocking rod 72 is used to open the exit of the guiding channel 7a and the conveying mechanism 1 starts working. The conveying mechanism 1 conveys the substrate A forward. Then, when the second sensor 64 of the control module 6 detects that the substrate A moves from the guiding channel 7a and the tail end of the substrate A has moved out of the guiding channel 7a, the controller 63 controls the second blocking driving member 74 to drive the second movable blocking rod 72 to move to the second blocking position to close the exit of the guiding channel 7a. At this time, the manual loading operation can be performed again without waiting for the conveying mechanism 1 to completely convey the printed substrate A, thereby effectively improving the printing efficiency.

[0036] In a specific implementation, the first stopping drive member 56, the correcting drive member 52, and the second stopping drive member 74 can all be implemented by cylinders. Of course, a linear motor, a screw-nut mechanism driven by a rotary motor, etc. can also be used. The correcting drive member 52 can be used to drive one or two correcting substrates 50 to move to correct the substrate A. In order to drive the correcting substrate 50 smoothly, a linear guide rail and a slider assembled on the linear guide rail can be provided on the beam 8, and the correcting substrate 50 can be fixed on the slider and slide on the linear guide rail through the slider; in addition, for the convenience of driving, each correcting mechanism 5 is correspondingly provided with a correcting drive member 52; in addition, the first release position and the second release position can be the corresponding blocking rod raised state, and the first stopping position and the second stopping position can be the corresponding blocking rod lowered state.

[0037] In an optional embodiment of the present invention, Figures 1-6 As shown, the conveyor mechanism 1 includes a loading conveyor section 10 and a printing conveyor section 12 connected to the output end of the loading conveyor section 10, each of which is connected to and independently controlled by the controller 63. The controller 63 controls the loading conveyor section 10 and the printing conveyor section 12 to start operation in response to the start signal, to pause operation in response to the first arrival signal, and to start operation in response to the printing signal. In this embodiment, the conveyor mechanism 1 includes the interconnected loading conveyor section 10 and the printing conveyor section 12. Using the controller 63 to independently control the loading conveyor section 10 and the printing conveyor section 12 effectively improves the digital inkjet printer's substrate A transport efficiency and enhances inkjet printing efficiency.

[0038] In an optional embodiment of the present invention, Figures 1-4 As shown, the substrate conveying device further includes a crossbeam 8 mounted at the junction of the loading conveying section 10 and the printing conveying section 12. The guide mechanism 7 is disposed on the crossbeam 8 on the side of the loading conveying section 10. The deflection correction base plate 50 and the deflection correction driving member 52 of the deflection correction mechanism 5 are disposed on the side of the crossbeam 8 on the side of the printing conveying section 12. In this embodiment, the provision of the crossbeam 8 and the assembly of the guide mechanism 7, the deflection correction mechanism 5, and other structures on the crossbeam 8 facilitate optimization of the spatial layout and installation.

[0039] In an optional embodiment of the present invention, Figures 1-4 and Figure 6 As shown, the conveyor mechanism 1 also includes a discharge conveyor section 14 connected to the output end of the printing conveyor section 12 and connected to the controller 63 for independent control by the controller 63. The control module 6 also includes a third sensor 65 disposed at the junction of the printing conveyor section 12 and the discharge conveyor section 14. The third sensor 65 emits a third arrival signal upon detecting the leading edge of the substrate A outputted from the printing conveyor section 12. In response to the third arrival signal, the controller 63 controls the discharge conveyor section 14 to commence operation. In this embodiment, the conveyor mechanism 1 also includes a discharge conveyor section 14, which effectively guides printed substrates A from the printing conveyor section 12 to a substrate collection area, facilitating operator dispensing of the printed substrates A. Furthermore, when the third sensor 65 detects the leading edge of the substrate A outputted from the printing conveyor section 12, indicating that the substrate A is about to enter the discharge conveyor section 14, the controller 83 controls the discharge conveyor section 14 to commence operation, thereby achieving automated activation of the discharge conveyor section 14 without the need for manual control.

[0040] In a specific implementation, the loading conveying section 10 and the unloading conveying section 14 both adopt rubber roller conveying devices; the printing conveying section 12 adopts a suction-type transmission belt conveying device.

[0041] In an optional embodiment of the present invention, Figure 3 and Figure 6 As shown, the control module 6 also includes a fourth sensor 66 disposed at the output end of the unloading conveyor section 14. Upon detecting the leading edge of the substrate A outputted by the unloading conveyor section 14, the fourth sensor 66 issues a fourth arrival signal. In response to the fourth arrival signal, the controller 63 controls the unloading conveyor section 14 to suspend operation. In this embodiment, when the fourth sensor 66 at the output end of the unloading conveyor section 14 detects the leading edge of the substrate A, indicating that the printed substrate A is about to leave the unloading conveyor section 14 and enter the substrate collection area, the controller 63 controls the unloading conveyor section 14 to suspend operation, preventing the unloading conveyor section 14 from idling, saving energy, and achieving automated control.

[0042] In an optional embodiment of the present invention, Figure 6 As shown, the substrate conveying device further includes a prompting module 9 connected to the controller 63 and configured to issue a prompt to alert the operator. The third sensor 65 also issues a fifth arrival signal upon detecting the trailing edge of the substrate A being delivered by the printing conveyor section 12. In response to this fifth arrival signal, the controller 63 controls the prompting module 9 to issue the prompt. In this embodiment, the third sensor 65 also issues the fifth arrival signal upon detecting the trailing edge of the substrate A. The controller 63 controls the additional prompting module 9 to issue a prompt to alert the operator that the printed substrate A has fully entered the unloading conveyor section 14 and that printing of the next batch of substrate A can now proceed. In specific implementations, this prompting may be an audible prompt, a light prompt, or a combination of both an audible and a visual prompt.

[0043] In an optional embodiment of the present invention, the third sensor 65 also issues the start signal when it detects the trailing edge of the substrate A ejected from the printing conveyor section 12. In this embodiment, when the third sensor 65 detects the trailing edge of the substrate A ejected from the printing conveyor section 12, i.e., when the printed substrate A has completely entered the unloading conveyor section 14, the third sensor 65 also issues the start signal. In response to the start signal from the third sensor 65, the controller 63 automatically controls the printing of the next batch of substrates A.

[0044] In an optional embodiment of the present invention, Figures 1-4As shown, a plurality of the guiding mechanisms 7 and the correcting mechanisms 5 are arranged side by side in the width direction of the conveying path of the substrate A, and the plurality of the guiding mechanisms 7 and the plurality of the correcting mechanisms 5 are arranged in one-to-one correspondence, each correcting mechanism 5 shares a first stopping driving member 56 and all the first movable blocking rods 54 are connected as one, each guiding mechanism 7 shares a second stopping driving member 74 and all the second movable blocking rods 72 are connected as one, one of the guide plates 70 in each guiding mechanism 7 is also connected to the correcting driving member 52 of a corresponding correcting mechanism 5 and moves back and forth relative to the other guide plate 70 under the drive of the correcting driving member 52, and a first sensor 61 is correspondingly provided at each correcting mechanism 5, and a second sensor 64 is provided at at least one of the guiding mechanisms 7. In this embodiment, by setting up a plurality of the guiding mechanisms 7 and a plurality of the correcting mechanisms 5, a plurality of guiding channels 7a and correcting channels 5a are formed along the width direction of the conveying path of the substrate A. The substrate conveying device can convey multiple sheets of substrate A at the same time, realize the transportation and printing of multiple sheets of substrate A, and effectively improve the printing efficiency. In addition, one of the guide plates 70 in each guiding mechanism 7 is also connected to the correcting driving member 52 of the corresponding correcting mechanism 5 and reciprocates relative to the other guide plate 70 under the drive of the correcting driving member 52. When the length of the substrate A is long, resulting in the front edge having abutted against the first movable blocking rod 54 while the tail is still in the guiding channel 7a, the guide plate 70 of the guiding mechanism 7 can be driven by the correcting driving member 52 of the correcting mechanism 5. The tail of the substrate A located in the guiding channel 7a is corrected; in addition, a second sensor 64 is assembled at at least one of the guiding mechanisms 7, and the state of the substrate A in each guiding channel 7a is comprehensively judged by detecting that the substrate A leaves the guiding channel 7a through at least one second sensor 64, and each correcting mechanism 5 is correspondingly provided with a first sensor 61 to ensure that the substrate A in each correcting channel 5a is against the second movable baffle 54 before the exit of the correcting channel 5a is opened, so as to avoid the substrate A in a correcting channel 5a not being against the second movable baffle 54, resulting in uneven printing patterns when printing on the substrate A. Moreover, the positioning of the substrate A at the exit of the correcting channel 5a is the last positioning of the substrate A, and accurate positioning effect must be guaranteed.

[0045] In the specific implementation, in order to smoothly drive the first movable shift rod 54 and the second movable shift rod 72 that are connected as one, a first stop driving member 56 and a second stop driving member 74 can be respectively provided at the opposite ends of the corresponding shift rods. Based on this consideration, the solution of providing a driving member at each end of the shift rod should still belong to sharing a driving member.

[0046] In another aspect, the embodiment of the present application provides a digital inkjet plotter, comprising a substrate conveying device and an inkjet device 3 arranged in the middle section of the substrate conveying path of the substrate conveying device, wherein the substrate conveying device is the substrate conveying device of the digital inkjet plotter as described in the above embodiment. The digital inkjet plotter of the present embodiment employs the substrate conveying device as described above, which can effectively ensure the inkjet printing effect of the substrate A.

[0047] In the embodiment as described above, Figure 1-Figure 5 In the embodiment as described above,

[0048] The specific working principle of the digital inkjet plotter provided by the embodiment of the present application is as follows:

[0049] Firstly, the substrate A is manually loaded into each straightening channel 7a, and during the loading, the front end and one side edge of the substrate A are respectively abutted against the second movable stop rod 72 and a first guide plate 70, so as to realize the manual initial positioning of the substrate A.

[0050] Secondly, after the manual loading is completed, the manual operation sends a starting signal to the controller 63 through the control switch 60, the controller 63 responds to the starting signal to control the second stop driving member 74 to drive the second movable stop rod 72 to move to the second release position to open the outlet of the straightening channel 7a, and simultaneously control the loading conveying section 10 and the printing conveying section 12 to start working, and the loading conveying section 10 and the printing conveying section 12 correspondingly enter each straightening channel 5a.

[0051] Then, the substrate A in each straightening channel 5a is abutted against the first movable stop rod 54 under the conveying of the loading conveying section 10 and the printing conveying section 12, and the front end of the substrate A in each straightening channel 5a is aligned, the first sensor 61 sends a first arrival signal after detecting that the front end of the substrate A in each straightening channel 5a is abutted against the first movable stop rod 54, and the controller 63 responds to the first arrival signal to control the straightening driving member 52 to drive the straightening base plate 50 to implement the straightening of the substrate in the straightening channel 5a.

[0052] Then, when the deflection correction operation of the substrate A in each deflection correction channel 5a is completed, the control switch 60 sends a printing signal to the controller 63. In response to the printing signal, the controller 63 controls the printing conveying section 12 to work again and controls the first stop driving member 56 to drive the first movable blocking rod 54 to move to the first release position to open the outlet of each deflection correction channel 5a. As a result, the substrate A that has been accurately corrected in each deflection correction channel 5a is transported by the printing conveying section 12 and is printed by the inkjet device 1. During this period, the tail end of the substrate A leaves the guiding channel 7a after being transported by the loading conveying section 10 and the printing conveying section 12. The second sensor 64 sends a second arrival signal. In response to the second arrival signal, the controller 63 controls the second stop driving member 74 to drive the second movable blocking rod 72 to move to the second stop position to close the outlet of each guiding channel 7a. At this time, the manual loading operation can be carried out again. It should be noted that for different substrates A, their specific lengths may be different, and the time when their tail ends leave the guiding channel 7a is also different.

[0053] Next, the printing conveyor section 12 continues to operate and conveys the printed substrate A forward to the unloading conveyor section 14. At this time, the third sensor 65 detects the front edge of the substrate A and sends a third arrival signal. In response to the third arrival signal, the controller 63 controls the unloading conveyor section 14 to start operating and continue to convey the substrate A forward.

[0054] Next, when the trailing edge of the substrate A passes the third sensor 65 while being conveyed by the unloading conveyor section 14, the third sensor 65 issues a fifth arrival signal, indicating that the substrate A has completely entered the unloading conveyor section 14 and that the next batch of substrates A can now be printed. In response to the fifth arrival signal, the controller 63 controls the prompt module 9 to issue a prompt message, prompting the operator to proceed with printing the next batch of substrates A.

[0055] Finally, the front edge of the substrate A is detected by the fourth sensor 66 as the substrate A continues to be conveyed by the unloading conveyor section 14. The fourth sensor 66 sends a fourth arrival signal, indicating that the printed substrate A is about to leave the unloading conveyor section 14 and enter the substrate collection area. In response to the fourth arrival signal, the controller 63 controls the unloading conveyor section 14 to suspend operation, completing the inkjet printing of the current batch of substrates A by the digital inkjet printer provided in an embodiment of the present invention.

[0056] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which fall within the scope of protection of the present invention.

Claims

1. A substrate conveying device for a digital inkjet printer, comprising: a conveying mechanism, configured to receive a substrate and convey the substrate; Characterized in that, the substrate conveying device further comprises: At least one deflection correction mechanism mounted above the conveying path of the substrate and located upstream of the inkjet printer's inkjet device, the deflection correction mechanism comprising two deflection correction substrates arranged parallel to each other and extending along the substrate conveying direction to form a deflection correction channel, a deflection correction drive for driving at least one of the two deflection correction substrates to reciprocate relative to the other deflection correction substrate, a first movable blocking rod assembled at the outlet of the deflection correction channel for blocking the substrate in the deflection correction channel, and a first blocking drive for driving the first movable blocking rod to move between a first blocking position and a first release position, the first blocking drive being a cylinder, a linear motor, or a screw-nut mechanism driven by a rotary motor; and a control module comprising a control switch for generating and outputting a start signal and a print signal, a first sensor assembled at the position of the first movable baffle for outputting a first arrival signal when detecting that a substrate has entered the deflection correction channel and is close to the first movable baffle, and a controller respectively connected to the control switch, the first sensor, the deflection correction drive, the first stop drive and the conveying mechanism, the controller being configured to control the first stop drive to drive the first movable baffle to move to the first stop position and control the conveying mechanism to start working in response to the start signal, control the conveying mechanism to pause in response to the first arrival signal and control the deflection correction drive to drive the deflection correction substrate to move to push the substrate for deflection correction, and control the first stop drive to drive the first movable baffle to move to the first release position and control the conveying mechanism to start in response to the print signal to convey the deflected substrate to the printing device; The substrate conveying device further includes a guide mechanism assembled at a loading end of the conveying mechanism and located upstream of the deflection-correcting mechanism, the guide mechanism including two guide plates arranged in parallel at a predetermined interval and extending along the substrate conveying direction to form a guide channel, a second movable blocking rod arranged at an exit of the guide channel, and a second blocking driving member for driving the second movable blocking rod to move between a second blocking position and a second release position, wherein the interval between the two guide plates is not less than the width of the substrate; The control module also includes a second sensor arranged at the exit of the guide channel and connected to the controller, and the second sensor sends a second in-position signal when it detects that the substrate moves from the guide channel and the tail end of the substrate has moved out of the guide channel; the controller is also used to control the second stopping drive to drive the second movable blocking rod to move to the second release position in response to the start signal and control the second stopping drive to drive the second movable blocking rod to move to the second stopping position in response to the second in-position signal.

2. The substrate conveying device of the digital inkjet printer according to claim 1, characterized in that: The conveying mechanism includes a loading conveying section connected to the controller and independently controlled by the controller, and a printing conveying section connected to the output end of the loading conveying section. The controller controls the loading conveying section and the printing conveying section to start working in response to the start signal, controls the loading conveying section and the printing conveying section to suspend working in response to the first in-position signal, and controls the printing conveying section to start working in response to the printing signal.

3. The substrate conveying device of the digital inkjet printer according to claim 2, characterized in that: The substrate conveying device also includes a crossbeam erected at the junction of the loading conveying section and the printing conveying section, the guiding mechanism is arranged on the side of the crossbeam close to the loading conveying section, and the correction substrate and correction driving component of the correction mechanism are arranged on the side of the crossbeam close to the printing conveying section.

4. The substrate conveying device of the digital inkjet printer according to claim 2, wherein: The conveying mechanism also includes a material unloading conveying section connected to the output end of the printing conveying section and connected to the controller and independently controlled by the controller. The control module also includes a third sensor arranged at the connection between the printing conveying section and the material unloading conveying section. When the third sensor detects the front end edge of the substrate output by the printing conveying section, it sends a third in-position signal. The controller controls the material unloading conveying section to start working in response to the third in-position signal.

5. The substrate conveying device of the digital inkjet printer according to claim 4, characterized in that: The control module also includes a fourth sensor arranged at the output end of the unloading conveying section. The fourth sensor sends a fourth in-position signal when detecting the front end edge of the substrate output by the unloading conveying section. The controller controls the unloading conveying section to suspend operation in response to the fourth in-position signal.

6. The substrate conveying device of the digital inkjet printer according to claim 4 or 5, characterized in that: The substrate conveying device also includes a prompt module connected to the controller and used to issue a prompt message to remind the operator. The third sensor also sends a fifth arrival signal when detecting the end edge of the substrate output by the printing conveying section. The controller controls the prompt module to issue the prompt message in response to the fifth arrival signal.

7. The substrate conveying device of the digital inkjet printer according to claim 4 or 5, characterized in that: The third sensor also sends the start signal when detecting the trailing edge of the substrate output by the printing transport section.

8. The substrate conveying device of a digital inkjet printer according to any one of claims 1 to 5, characterized in that: A plurality of guiding mechanisms and correcting mechanisms are arranged side by side in the width direction of the conveying path of the substrate, and the plurality of guiding mechanisms and the plurality of correcting mechanisms are arranged in one-to-one correspondence. Each correcting mechanism shares a first stopping driving member and all the first movable bars are connected as one. Each guiding mechanism shares a second stopping driving member and all the second movable bars are connected as one. One of the guide plates in each guiding mechanism is also connected to the correcting driving member of a corresponding correcting mechanism and moves back and forth relative to the other guide plate under the drive of the correcting driving member. A first sensor is correspondingly provided at each correcting mechanism, and a second sensor is provided at at least one guiding mechanism.

9. A digital inkjet printer comprising a substrate conveying device and a printing device disposed in the middle of a substrate conveying path of the substrate conveying device, characterized in that: The substrate conveying device is the substrate conveying device of the digital inkjet printer according to any one of claims 1 to 8.

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