An easy-to-maintain large-format packaging digital inkjet printer

Abstract

The present invention discloses a large-format packaging digital inkjet printer that is easy to maintain, and is also configured with an adsorption platform fixing frame. The adsorption platform fixing frame is connected to the left side of the adsorption platform, and the adsorption platform fixing frame is used to support the conveyor belt removed from the adsorption platform; the adsorption platform fixing frame includes a movable base and a conveyor belt support bracket; the cross-section of the movable base is L-shaped, and the left side of the movable base extends upward; the bottom surface of the left side of the conveyor belt support bracket is connected to the top surface of the left side of the movable base; the right side part of the conveyor belt support bracket is suspended and covers the upper part of the right side part of the movable base; the height and shape dimensions of the right side part of the conveyor belt support bracket are the same as the height and shape dimensions of the adsorption platform. By using the adsorption platform fixing frame, the conveyor platform located on the adsorption platform is transferred to the conveyor belt support bracket, eliminating the cumbersome process of manually disassembling the conveyor belt into parts and improving the work efficiency of maintenance and repair.

Description

Technical Field

[0001] The present invention relates to the technical field of digital inkjet printing equipment, and particularly to a large-format packaging digital inkjet printer that is easy to maintain. Background Art

[0002] In a large-format packaging digital inkjet printer, a plurality of lifting cages are provided above a conveyor belt and a suction platform. An inkjet print head is installed below each lifting cage. The printing operation plane is large. After being used for a period of time, it is necessary to repair, maintain or clean the conveyor belt, the suction platform and the inkjet print head.

[0003] The conveyor belt and the suction platform are large in size and heavy in weight. If the conveyor belt is disassembled into parts by hand for repair, it takes a long time. After repair, the parts need to be reinstalled, and the process is cumbersome and complex, resulting in low work efficiency. Summary of the Invention

[0004] In view of the above defects, the purpose of the present invention is to provide a large-format packaging digital inkjet printer that is easy to maintain. An adsorption platform fixing frame is used to dock with the adsorption platform and support the conveyor belt to be removed, reducing the equipment installation space, simplifying the maintenance work, and improving the maintenance efficiency.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A large-format packaging digital inkjet printer that is easy to maintain, including an adsorption platform, a conveyor belt, a frame and a plurality of lifting cages. The conveyor belt is sleeved on the outer side of the adsorption platform. The frame is located on the right side of the adsorption platform. An adsorption platform fixing frame is further configured. The adsorption platform fixing frame is connected to the left side surface of the adsorption platform, and the adsorption platform fixing frame is used to support the conveyor belt removed from the adsorption platform;

[0007] The adsorption platform fixing frame includes a movable base and a conveyor belt support bracket;

[0008] The cross-section of the movable base is L-shaped, and the left side of the movable base extends upward; the bottom surface of the left side of the conveyor belt support bracket is connected to the top surface of the left side of the movable base; the right part of the conveyor belt support bracket is suspended and covers the upper part of the right part of the movable base;

[0009] The lifting cage is installed on the top of the frame, and when disassembling and assembling the conveyor belt, the lifting cage rises and is suspended above the conveyor belt.

[0010] Furthermore, it further includes a plurality of fixing plates;

[0011] The right side of the fixed plate is connected to the top of the frame, and the left side of the fixed plate is detachably connected to the top of the lifting cage;

[0012] When disassembling and assembling the conveyor belt, the lifting cage rises and is connected to the corresponding fixed plate and the frame; when the disassembly and assembly of the conveyor belt are completed, the fixed plate is removed and the lifting cage descends.

[0013] Furthermore, it also includes a spray head cleaning device and a spray head cleaning and filtering device, and an air suction device is installed on the adsorption platform;

[0014] The spray head cleaning and filtering device includes an adsorption platform filter tank, a spray head cleaning filter tank, and an exhaust pipe;

[0015] Every two adjacent lifting cages form a group, and the spray head cleaning device is installed between the two lifting cages in each group. The spray head cleaning device is used to clean the spray heads installed on the lifting cages;

[0016] The adsorption platform filter tank is connected to the air suction device to provide adsorption force; the spray head cleaning filter tank is connected to the spray head cleaning device to clean the stopped spray heads;

[0017] The adsorption platform filter tank and the spray head cleaning filter tank are installed adjacent to each other in the front and back on the right side of the adsorption platform. The adsorption platform filter tank and the spray head cleaning filter tank are also respectively connected to the exhaust pipe, and the exhaust pipe is connected to the same exhaust fan and sucks air from inside the adsorption platform filter tank and inside the spray head cleaning filter tank respectively.

[0018] Furthermore, it also includes a switching valve, and the switching valve includes a valve body and a valve core;

[0019] The exhaust pipe is provided with a first connection port, a second connection port, an exhaust fan connection port, and a mounting port;

[0020] The first connection port is connected to the adsorption platform filter tank, the second connection port is connected to the spray head cleaning filter tank, and the exhaust fan connection port is connected to the input end of the exhaust fan;

[0021] The mounting port is located at the front end of the exhaust pipe; the first connection port is close to the front end of the exhaust pipe; the second connection port is located at the rear end of the exhaust pipe; the exhaust fan connection port is located at the bottom of the exhaust pipe, and the exhaust fan connection port is located between the first connection port and the second connection port;

[0022] The valve body is installed at the installation port, and the output end of the valve body extends into the exhaust pipe and is connected to the valve core; the outer side surface of the valve core is against the inner wall of the exhaust pipe, and the valve body drives the valve core to move in the exhaust pipe and stop in front of the exhaust fan connection port or over the rear side wall of the exhaust fan connection port.

[0023] Furthermore, the exhaust pipe is also provided with a partition, and the switching valve is also provided with a sliding rod;

[0024] The hollow partition is inserted between the exhaust fan connection port and the second connection port, the front end of the slide rod is connected to the output end of the valve body, the rear end of the slide rod passes through the partition and is connected to the rear end surface of the valve core, and the inner wall of the partition is gap-matched with the outer side surface of the slide rod of the valve body;

[0025] The partition is close to the front of the exhaust fan connection port, and a gap is left between the exhaust fan connection port and the partition;

[0026] When the front end surface of the valve core abuts against the rear plate surface of the partition, the second connection port is connected to the exhaust fan connection port, and the first connection port is separated from the exhaust fan connection port; when the front end surface of the valve core passes over the rear side wall of the exhaust fan connection port, the second connection port is separated from the exhaust fan connection port, and the first connection port is connected to the exhaust fan connection port.

[0027] Further, the nozzle cleaning device includes an upper cleaning plate, a lower cleaning plate, a movement control unit and a lifting control unit;

[0028] The top surfaces of the upper cleaning tray and the lower cleaning tray are respectively mounted with a first spray cleaning head and a second spray cleaning head;

[0029] The two ends of the upper cleaning tray and the two ends of the lower cleaning tray are respectively connected to the mobile control unit by transmission, and the mobile control unit drives the upper cleaning tray and the lower cleaning tray to move back and forth in the horizontal direction and approach or move away from each other;

[0030] The two ends of the upper cleaning plate are also respectively connected to the lifting control unit, and the lifting control unit drives the upper cleaning plate to move up and down;

[0031] When the upper cleaning tray is close to the lower cleaning tray, the lifting control unit drives the upper cleaning tray to rise upward, and the movement control unit drives the upper cleaning tray to move horizontally to above the lower cleaning tray, and the upper cleaning tray covers the lower cleaning tray.

[0032] Further, the lifting control unit includes a lifting cylinder, a guide assembly and a mounting base plate;

[0033] Both the left and right ends of the upper cleaning tray are provided with lifting cylinder connectors and guide rod connectors;

[0034] The two lifting cylinder connectors are respectively installed in the middle of the left and right ends of the upper cleaning tray; the guide rod connectors are grouped in pairs, and the two guide rod connectors are respectively installed on the front and rear sides of the lifting cylinder connector;

[0035] The lifting cylinder is installed in the middle of the side of the mounting seat plate away from the running direction of the adsorption platform, and two of the guide assemblies are respectively installed on the front and rear sides of the lifting cylinder;

[0036] The guide assembly includes a base and a guide rod. The lower end of the guide rod is inserted into the base, and the upper end of the guide rod is connected to the guide rod connector;

[0037] The output end of the lifting cylinder extends upward and is connected to the lifting cylinder connector.

[0038] Furthermore, the lifting control unit further includes an induction photoelectric eye and a plurality of buffers;

[0039] The buffer is installed on the side of the guide rod connector away from the mounting seat plate, and the top end of the buffer faces upward;

[0040] The top end of the buffer is an elastic body. The top end of the buffer abuts against the bottom surface of the guide rod connector moving downward and approaching the lowest position. The buffer is used to buffer the descending speed of the upper cleaning tray;

[0041] The induction photoelectric eye is installed on the mounting seat plate, and the induction photoelectric eye is located between the lifting cylinder and the guide assembly;

[0042] The induction photoelectric eye is signal-connected to the lifting cylinder and the movement control unit, and the induction photoelectric eye is used to detect the specific position of the upper cleaning tray.

[0043] Furthermore, the lifting control unit further includes a plurality of buffers;

[0044] The buffer is installed on the opposite inner sides of the two mounting seat plates;

[0045] The top end of the buffer is an elastic body. The top end of the buffer abuts against the bottom surface of the upper cleaning tray, and is used to buffer the descending speed of the upper cleaning tray approaching the lowest position.

[0046] Specifically, the operation steps for the maintenance of the adsorption platform and the replacement of the conveyor belt include:

[0047] S1) Move the adsorption platform fixing bracket and lean it against the left side of the adsorption platform, and then connect the right side surface of the conveyor belt supporting bracket to the left side surface of the adsorption platform;

[0048] S2) Lift the lifting cage to the highest position, connect the left side edge of the fixing plate to the top of the lifting cage, connect the right side edge of the fixing plate to the top of the machine frame, and fix the lifting cage at the highest position;

[0049] S3) Remove the fixing parts that block the movement of the conveyor belt, and then horizontally push the conveyor belt sleeved on the outer side surface of the adsorption platform and sleeve it on the outer side surface of the conveyor belt supporting bracket;

[0050] S4) Perform maintenance operations on the adsorption platform;

[0051] S5) Remove the conveyor belt sleeved on the outer side surface of the conveyor belt supporting bracket, and replace it with a new conveyor belt sleeved on the outer side surface of the conveyor belt supporting bracket;

[0052] S6) After the maintenance operation on the adsorption platform is completed, push the new conveyor belt back in the reverse direction and sleeve it on the outer side surface of the adsorption platform to complete the replacement of the conveyor belt;

[0053] S7) Install the fixing parts removed in step S3) back to their original positions, release the connection between the left side edge of the fixing plate and the top of the lifting cage, and remove the fixing plate, that is, complete the repair of the adsorption platform and the replacement of the conveyor belt

[0054] The beneficial effects of the technical solution of the present invention are as follows: The easy-to-maintain large-format packaging digital inkjet printer adopts an adsorption platform fixing bracket, which is connected with the adsorption platform at the same horizontal height through a conveyor belt supporting bracket, and then transfers the conveyor platform on the adsorption platform to the conveyor belt supporting bracket, reducing the cumbersome process of disassembling the conveyor belt into parts by hand and improving the work efficiency of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a schematic structural diagram of the removal process of the conveyor belt of the easy-to-maintain large-format packaging digital inkjet printer according to an embodiment of the present invention;

[0056] Figure 2 is Figure 1 The schematic structural diagram of the installation process of the conveyor belt in;

[0057] Figure 3 The installation structural diagram of the nozzle cleaning and filtering device of;

[0058] Figure 4 is Figure 3Schematic structural diagram of the nozzle cleaning and filtering device therein;

[0059] Figure 5 is Figure 3 Schematic top-down structural diagram of the nozzle cleaning and filtering device therein;

[0060] Figure 6 Schematic structural diagram of the state where the upper cleaning disk and the lower cleaning disk of the nozzle cleaning device are below the lifting cage and ready to clean the nozzle;

[0061] Figure 7 is Figure 6 Schematic structural diagram of the state where the upper cleaning disk and the lower cleaning disk are stacked on top of each other;

[0062] Figure 8 is Figure 6 Schematic structural diagram of the upper cleaning disk therein;

[0063] Wherein: adsorption platform 1; conveyor belt 2; lifting cage 3; frame 4; adsorption platform fixing bracket 5;

[0064] fixing plate 6; nozzle cleaning device 7; nozzle cleaning and filtering device 8; movable base 51; conveyor belt support bracket 52; adsorption platform filter tank 81; nozzle cleaning and filtering tank 82; exhaust duct 83; switching valve 84; upper cleaning disk 71; lower cleaning disk 72; movement control unit; lifting control unit 74; first nozzle cleaning head 712; lifting cylinder connection seat 713; connection seat 714; second nozzle cleaning head 721; lowering cylinder 741; guiding component 742; mounting seat plate 743; buffer 744; induction photoelectric eye 748; guiding rod connecting base 7421; guiding rod 7422; first connection port 831; second connection port 832; exhaust fan connection port 833; partition plate 834; mounting port 835; valve body 841; valve core 842; sliding rod 843. Detailed implementation manners

[0065] The following combines the attached Figures 1-8 and further illustrates the technical solution of the present invention through specific implementation manners.

[0066] The attached drawings are only for exemplary illustration and cannot be construed as a limitation of this patent; for better illustration of this embodiment, some components in the attached drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted.

[0067] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be said that there is a connection inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0068] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0069] An easy-to-maintain large-format packaging digital inkjet printer, including an adsorption platform 1, a conveyor belt 2, a frame 4 and a plurality of lifting cages 3. The conveyor belt 2 is sleeved on the outer side of the adsorption platform 1. The frame 4 is located on the right side of the adsorption platform 1. An adsorption platform fixing frame 5 is also configured. The adsorption platform fixing frame 5 is connected to the left side surface of the adsorption platform 1. The adsorption platform fixing frame 5 is used to support the conveyor belt 2 removed from the adsorption platform 1.

[0070] The adsorption platform fixing frame 5 includes a movable base 51 and a conveyor belt supporting bracket 52;

[0071] The cross-section of the movable base 51 is L-shaped, and the left side of the movable base 51 extends upward; the bottom surface of the left side of the conveyor belt supporting bracket 52 is connected to the top surface of the left side of the movable base 51; the right part of the conveyor belt supporting bracket 52 is suspended and covers the upper part of the right part of the movable base 51;

[0072] The lifting cage 3 is installed on the top of the frame 4, and when disassembling and assembling the conveyor belt 2, the lifting cage 3 rises and is suspended above the conveyor belt 2.

[0073] The printing operation plane of the large-format packaging digital inkjet printer is large, and the sizes and weights of the conveyor belt 2 and the adsorption platform 2 are large. If the conveyor belt 2 is disassembled into parts by hand for maintenance, it takes a long time. After repair, the parts still need to be reinstalled, and the process is cumbersome and complex, with low work efficiency.

[0074] such asFigure 1 and 2 As shown, the adsorption platform fixing frame 5 is adopted, and the conveying belt supporting bracket 52 is connected with the adsorption platform 1 at the same horizontal height. Then, the conveying platform 2 located on the adsorption platform 1 is transferred to the conveying belt supporting bracket 52, which simplifies the cumbersome process of disassembling the conveying belt 2 into parts by hand and improves the work efficiency of maintenance. When disassembling and assembling the conveying belt 2, the lifting cage 3 rises and is suspended above the conveying belt 2, avoiding the lifting cage 3 from obstructing the disassembly and assembly of the conveying belt 2, which facilitates the maintenance operations of the lifting cage 3, the adsorption platform 1, and the conveying belt 2.

[0075] Furthermore, it further includes a plurality of fixing plates 6;

[0076] The right side of the fixing plate 6 is connected to the top of the frame 4, and the left side of the fixing plate 6 is detachably connected to the top of the lifting cage 3;

[0077] When disassembling and assembling the conveying belt 2, the lifting cage 3 rises and is connected to the frame 4 through the corresponding fixing plate 6. After the disassembly and assembly of the conveying belt 2 are completed, the fixing plate 6 is removed, and the lifting cage 3 descends.

[0078] As Figures 1-2 shown, when disassembling and assembling the conveying belt 2, the lifting cage 3 rises until its top is flush with the top of the frame 4, and then the lifting cage 3 is fixed to the top of the frame 4 through the fixing plate 6, so that the lifting cage 3 is suspended above the conveying belt 2, avoiding the lifting cage 3 from obstructing the disassembly and assembly of the conveying belt 2, which facilitates the maintenance operations of the lifting cage 3, the adsorption platform 1, and the conveying belt 2 and improves the safety during the maintenance process. Due to the too long printing width, the weight and span of the lifting cage and the adsorption platform are too large. When the lifting cage 3 rises, the fixing plate 6 needs to be installed. The fixing plate 6 can jointly support the lifting cage 3 with the cantilever for installing the lifting cage 3 to improve the supporting strength. After the disassembly and assembly of the conveying belt 2 are completed, the fixing plate 6 is removed, and the lifting cage 3 descends to the working position.

[0079] Furthermore, it further includes a nozzle cleaning device 7 and a nozzle cleaning and filtering device 8, and the adsorption platform 1 is equipped with an air suction device;

[0080] The nozzle cleaning and filtering device 8 includes an adsorption platform filter tank 81, a nozzle cleaning filter tank 82, and an extraction air pipe 83;

[0081] Every two adjacent lifting cages 3 form a group, and the nozzle cleaning device 7 is installed between the two lifting cages 3 in each group. The nozzle cleaning device 7 is used to clean the nozzles installed on the lifting cage 3;

[0082] The adsorption platform filter tank 81 is connected to the air suction device to provide adsorption force; the nozzle cleaning filter tank 82 is connected to the nozzle cleaning device 7 to clean the nozzles that have stopped operating.

[0083] The adsorption platform filter tank 81 and the nozzle cleaning filter tank 82 are installed adjacent to each other in front and back on the right side of the adsorption platform 1. The adsorption platform filter tank 81 and the nozzle cleaning filter tank 82 are also respectively connected to the exhaust pipe 83, and the exhaust pipe 83 is connected to the same exhaust fan and sucks air from inside the adsorption platform filter tank 81 and inside the nozzle cleaning filter tank 82 respectively.

[0084] As Figures 3-5 shown, for the easily maintainable large-format packaging digital inkjet printer of the present invention, the adjacent adsorption platform filter tank 81 and nozzle cleaning filter tank 82 in front and back are installed on the large-format packaging digital inkjet printer. When the large-format packaging digital inkjet printer is in printing operation, the adsorption platform filter tank 81 is connected to the adsorption platform 1 to clean the nozzles. When the large-format packaging digital inkjet printer finishes printing and stops operating, the nozzle cleaning filter tank 82 can be connected to the nozzle cleaning device 7 to clean the nozzles. The adsorption platform filter tank 81 and the nozzle cleaning filter tank 82 are both connected to the same exhaust fan through the exhaust pipe 83, which can improve the utilization rate of the exhaust fan, save energy and equipment installation space, and can clean the nozzles in different states, with flexible and convenient operation.

[0085] Furthermore, a switching valve 84 is further included. The switching valve 84 includes a valve body 841 and a valve core 842.

[0086] The exhaust pipe 83 is provided with a first connection port 831, a second connection port 832, an exhaust fan connection port 833 and an installation port 835.

[0087] The first connection port 831 is connected to the adsorption platform filter tank 81, the second connection port 832 is connected to the nozzle cleaning filter tank 82, and the exhaust fan connection port 833 is connected to the input end of the exhaust fan.

[0088] The installation port 835 is located at the front end of the exhaust pipe 83; the first connection port 831 is close to the front end of the exhaust pipe 83; the second connection port 832 is located at the rear end of the exhaust pipe 83; the exhaust fan connection port 833 is located at the bottom of the exhaust pipe 83, and the exhaust fan connection port 833 is located between the first connection port 831 and the second connection port 832.

[0089] The valve body 841 is installed at the installation port 835, and the output end of the valve body 841 extends into the air extraction pipe 83 and is connected to the valve core 842; the outer side surface of the valve core 842 abuts against the inner wall of the air extraction pipe 83, and the valve body 841 drives the valve core 842 to move in the air extraction pipe 83 and stop in front of the air extraction fan connection port 833 or cross the rear side wall of the air extraction fan connection port 833.

[0090] As Figure 4 and 5 shown, by controlling the staying position of the valve core 842 of the switching valve 84, the air extraction fan can be connected to the adsorption platform filter tank 81 or the nozzle cleaning filter tank 82 to meet the cleaning of the nozzle under different states.

[0091] Figure 4 As shown, when the packaging digital inkjet printer is in printing operation, the valve core 842 of the switching valve 84 stays after crossing the rear side wall of the air extraction fan connection port 833. At this time, the air extraction fan is connected to the adsorption platform filter tank 81, and the nozzle can be cleaned through the adsorption platform 1.

[0092] Figure 5 As shown, when the packaging digital inkjet printer stops printing, the valve core 842 of the switching valve 84 stays in front of the air extraction fan connection port 833. At this time, the air extraction fan is connected to the nozzle cleaning filter tank 82, and the nozzle can be cleaned through the nozzle cleaning device 7.

[0093] Furthermore, the air extraction pipe 83 is further provided with a partition plate 834, and the switching valve 84 is further provided with a sliding rod 843;

[0094] The hollow partition plate 834 is inserted between the air extraction fan connection port 833 and the second connection port 832. The front end of the sliding rod 843 is connected to the output end of the valve body 841, and the rear end of the sliding rod 843 passes through the partition plate 834 and is connected to the rear end face of the valve core 842. The inner wall of the partition plate 834 is in clearance fit with the outer side surface of the sliding rod 843 of the valve body 841;

[0095] The partition plate 834 is close to the front of the air extraction fan connection port 833, and there is a gap between the air extraction fan connection port 833 and the partition plate 834;

[0096] When the front end face of the valve core 842 abuts against the rear plate surface of the partition plate 834, the second connection port 832 is communicated with the air extraction fan connection port 833, and the first connection port 831 is partitioned from the air extraction fan connection port 833; when the front end face of the valve core 842 crosses the rear side wall of the air extraction fan connection port 833, the second connection port 832 is partitioned from the air extraction fan connection port 833, and the first connection port 831 is communicated with the air extraction fan connection port 833.

[0097] like Figure 4 and 5 As shown, the forward stroke of the valve core 842 can be limited by the partition 834, and the inner wall of the partition 834 and the outer side clearance of the slide rod 843 of the valve body 841 are matched, which can also improve the operating stability of the valve core 842 and extend the service life of the switching valve 84.

[0098] Furthermore, the nozzle cleaning device 7 includes an upper cleaning plate 71, a lower cleaning plate 72, a movement control unit and a lifting control unit 74;

[0099] The top surfaces of the upper cleaning plate 71 and the lower cleaning plate 72 are respectively mounted with a first spray cleaning head 712 and a second spray cleaning head 721;

[0100] The two ends of the upper cleaning tray 71 and the two ends of the lower cleaning tray 72 are respectively connected to the mobile control unit, and the mobile control unit drives the upper cleaning tray 71 and the lower cleaning tray 72 to move back and forth in the horizontal direction and move closer to or away from each other;

[0101] Both ends of the upper cleaning plate 71 are also respectively connected to the lifting control unit 74, and the lifting control unit 74 drives the upper cleaning plate 71 to move up and down;

[0102] When the upper cleaning tray 71 and the lower cleaning tray 72 are close to each other, the lifting control unit 74 drives the upper cleaning tray 71 to rise upward, and the movement control unit then drives the upper cleaning tray 71 to move horizontally to above the lower cleaning tray 72, and the upper cleaning tray 71 covers the lower cleaning tray 72.

[0103] like Figures 6-8As shown in the figure, when the large-format packaging digital inkjet printer stops printing and the nozzle cleaning device 7 has completed the nozzle cleaning work, the upper cleaning tray 71 and the lower cleaning tray 72 installed above the adsorption platform 1 are driven by the movement control unit to approach each other. Then, the upper cleaning tray 71 is lifted by the lifting control unit 74, and then the upper cleaning tray 71 is continuously driven by the movement control unit to move horizontally above the lower cleaning tray 72, so that the upper cleaning tray 71 is stacked and covers the upper part of the lower cleaning tray 72. Conversely, when nozzle cleaning is required, first, the upper cleaning tray 71 and the lower cleaning tray 72 are driven by the movement control unit to move horizontally in opposite directions and away from each other. Then, the upper cleaning tray 71 is lowered by the lifting control unit 74 to the same height as the lower cleaning tray 72. The first nozzle cleaning head 712 and the second nozzle cleaning head 721 respectively suck the excess ink on the surface and around the nozzles to be cleaned through the suction device. The upper cleaning tray 71 and the lower cleaning tray 72 stacked on top of each other occupy less working area and can be placed between two adjacent lifting cages 3, so that the printing plane above the adsorption platform 1 has more flexible operating space during printing operations. By simultaneously starting multiple nozzle cleaning devices 7 between multiple lifting cages 3, the working efficiency of cleaning the nozzles can be improved.

[0104] Figure 6 It is a schematic structural diagram of the state where the upper cleaning tray 71 and the lower cleaning tray 72 are respectively under different lifting cages 3 to prepare for cleaning the nozzles. Figure 7 It is a schematic structural diagram of the state where the upper cleaning tray 71 and the lower cleaning tray 72 are stacked on top of each other.

[0105] Furthermore, the lifting control unit 74 includes a lifting cylinder 741, a guiding component 742, and a mounting seat plate 743.

[0106] Lifting cylinder connection seats 713 and guide rod connection seats 714 are provided at both the left and right ends of the upper cleaning tray 71.

[0107] The two lifting cylinder connection seats 713 are respectively installed in the middle of the left and right ends of the upper cleaning tray 71. The guide rod connection seats 714 are grouped in pairs, and the two guide rod connection seats 714 are respectively installed on the front and rear sides of the lifting cylinder connection seat 713.

[0108] The lifting cylinder 741 is installed in the middle of the side of the mounting seat plate 743 away from the running direction of the adsorption platform 1. Two guiding components 742 are respectively installed on the front and rear sides of the lifting cylinder 741.

[0109] The guiding component 742 includes a base 7421 and a guide rod 7422. The lower end of the guide rod 7422 is inserted into the base 7421, and the upper end of the guide rod 7422 is connected to the guide rod connection seat 714.

[0110] The output end of the lifting cylinder 741 extends upward and is connected to the lifting cylinder connection seat 713.

[0111] As Figure 8 shown, the two lifting cylinders 741 located at the left and right ends of the upper cleaning tray 71 synchronously push the two lifting cylinder connection seats 713 to move up and down, and drive the guide rod connection seat 714 to move up and down along the guide rod 7422, so that the upper cleaning tray 71 remains stable and does not shake when moving up and down.

[0112] Furthermore, the lifting control unit 74 further includes an induction photoelectric eye 748 and a plurality of buffers 744;

[0113] The buffer 744 is installed on the side of the guide rod connection seat 714 away from the mounting seat plate 743, and the top of the buffer 744 faces upward;

[0114] The top of the buffer 744 is an elastic body. The top of the buffer 744 abuts against the bottom surface of the guide rod connection seat 714 moving downward and approaching the lowest position. The buffer 744 is used to buffer the descending speed of the upper cleaning tray 71;

[0115] The induction photoelectric eye 748 is installed on the mounting seat plate 743, and the induction photoelectric eye 748 is located between the lifting cylinder 741 and the guide assembly 742;

[0116] The induction photoelectric eye 748 is signal-connected to the lifting cylinder 741 and the movement control unit. The induction photoelectric eye 748 is used to detect the specific position of the upper cleaning tray 71.

[0117] As Figure 8 shown, by the buffer 744 abutting against the bottom surface of the guide rod connection seat 714 sliding downward and approaching the lowest position, the descending speed of the upper cleaning tray 71 can be reduced, and the pressure borne by the lifting cylinder 741 can be buffered, which is beneficial to improving the safety and service life of the upper cleaning tray 71 and the lifting cylinder 741.

[0118] As Figure 6 shown, by the induction photoelectric eye 748 confirming the specific position of the upper cleaning tray 71 and sending out a feedback signal, the opening and closing of the lifting cylinder 741 or the movement control unit are controlled, so as to adjust the height of the upper cleaning tray 71 and the front and back positions relative to the lower cleaning tray 72.

[0119] Furthermore, the lifting control unit 74 further includes a plurality of buffers 744;

[0120] The buffer 744 is installed on the opposite inner sides of the two mounting seat plates 743;

[0121] The top end of the buffer 744 is an elastomer. The top end of the buffer 744 abuts against the bottom surface of the upper cleaning tray 71 to buffer the descending speed of the upper cleaning tray 71 when it approaches the lowest position.

[0122] As Figure 8 Shown is another installation method of the buffer 744. The buffer 744 is installed on the opposite inner sides of two mounting seat plates 743. The top end of the buffer 744 abuts against the bottom surface of the upper cleaning tray 71, which can also buffer the descending speed of the upper cleaning tray 71 when it approaches the lowest position.

[0123] Specifically, the operation steps for the maintenance of the adsorption platform 1 and the replacement of the conveyor belt 2 include:

[0124] S1) Move the adsorption platform fixing frame 5 and lean it against the left side of the adsorption platform 1, and then connect the right side surface of the conveyor belt supporting bracket 52 to the left side surface of the adsorption platform 1;

[0125] S2) Raise the lifting cage 3 to the highest position, connect the left side edge of the fixing plate 6 to the top of the lifting cage 3, connect the right side edge of the fixing plate 6 to the top of the frame 4, and fix the lifting cage 3 at the highest position;

[0126] S3) Remove the fixing parts that block the movement of the conveyor belt 2, and then horizontally push the conveyor belt 2 sleeved on the outer side surface of the adsorption platform 1 and sleeve it on the outer side surface of the conveyor belt supporting bracket 52;

[0127] S4) Perform maintenance operations on the adsorption platform 1;

[0128] S5) Remove the conveyor belt 2 sleeved on the outer side surface of the conveyor belt supporting bracket 52, and replace it with a new conveyor belt 2 sleeved on the outer side surface of the conveyor belt supporting bracket 52;

[0129] S6) After the maintenance operations on the adsorption platform 1 are completed, push the new conveyor belt 2 back in the reverse direction and sleeve it on the outer side surface of the adsorption platform 1 to complete the replacement of the conveyor belt 2;

[0130] S7) Install the fixing parts removed in step S3) back in place, release the connection between the left side edge of the fixing plate 6 and the top of the lifting cage 3, and remove the fixing plate 6, thus completing the maintenance of the adsorption platform 1 and the replacement of the conveyor belt 2.

[0131] As Figures 1-2As shown, during the above-mentioned maintenance and replacement process, after the original conveyor belt 2 is transferred to the conveyor belt support bracket 52, the maintenance of the adsorption platform 1 and the replacement of the conveyor belt 2 can be carried out simultaneously, which can shorten the time for maintenance operations. After completing the above maintenance and replacement operations, the operation of the large-format packaging digital inkjet printer can be restored. The entire maintenance process is safe, simple, and highly efficient.

[0132] In summary, as Figures 1-8 shown in the embodiment of the present invention, for the easily maintainable large-format packaging digital inkjet printer, the adsorption platform fixing frame 5 is used to connect with the adsorption platform 1 at the same horizontal height through the conveyor belt support bracket 52, and then the conveyor platform 2 located on the adsorption platform 1 is transferred to the conveyor belt support bracket 52, eliminating the cumbersome process of manually disassembling the conveyor belt 2 into parts and improving the work efficiency of maintenance.

[0133] The technical principle of the present invention has been described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be construed in any way as a limitation on the protection scope of the present invention. Based on the explanations herein, those skilled in the art can readily conceive of other specific embodiments of the present invention without creative efforts, and these embodiments will fall within the protection scope of the present invention.

Claims

1. An easy-to-maintain large-format packaging digital inkjet printer, comprising an adsorption platform, a conveyor belt, a frame, and a plurality of lifting cages. The conveyor belt is sleeved on the outer side of the adsorption platform, and the frame is located on the right side of the adsorption platform. It is characterized in that, An adsorption platform fixing frame is also configured. The adsorption platform fixing frame is connected to the left side of the adsorption platform, and the adsorption platform fixing frame is used to support the conveyor belt removed from the adsorption platform. The adsorption platform fixing frame includes a movable base and a conveyor belt supporting bracket. The cross-section of the movable base is L-shaped, and the left side of the movable base extends upward; the bottom surface of the left side of the conveyor belt supporting bracket is connected to the top surface of the left side of the movable base; the right part of the conveyor belt supporting bracket is suspended and covers the upper part of the right part of the movable base. The lifting cage is installed on the top of the frame, and when disassembling and assembling the conveyor belt, the lifting cage rises and is suspended above the conveyor belt. It also includes a nozzle cleaning device and a nozzle cleaning and filtering device. The nozzle cleaning and filtering device includes an adsorption platform filter tank, a nozzle cleaning filter tank and an exhaust pipe. Every two adjacent lifting cages form a group, and the nozzle cleaning device is installed between the two lifting cages in each group. The nozzle cleaning device is used to clean the nozzles installed on the lifting cages. The adsorption platform filter tank is communicated with the air suction device to provide adsorption force; the nozzle cleaning filter tank is connected to the nozzle cleaning device and is used to clean the nozzles that have stopped operating. An air suction device is installed on the adsorption platform. The adsorption platform filter tank and the nozzle cleaning filter tank are installed adjacent to each other in the front and back on the right side of the adsorption platform. The adsorption platform filter tank and the nozzle cleaning filter tank are also respectively communicated with the exhaust pipe, and the exhaust pipe is communicated with the same exhaust fan and sucks air from inside the adsorption platform filter tank and inside the nozzle cleaning filter tank respectively. It also includes a switching valve. The switching valve includes a valve body and a valve core. The exhaust pipe is provided with a first connection port, a second connection port, an exhaust fan connection port and a mounting port. The first connection port is communicated with the adsorption platform filter tank, the second connection port is communicated with the nozzle cleaning filter tank, and the exhaust fan connection port is communicated with the input end of the exhaust fan. The mounting port is located at the front end of the exhaust pipe; the first connection port is close to the front end of the exhaust pipe. The second connection port is located at the rear end of the exhaust pipe; the exhaust fan connection port is located at the bottom of the exhaust pipe, and the exhaust fan connection port is located between the first connection port and the second connection port. The valve body is installed at the mounting port, and the output end of the valve body extends into the exhaust pipe and is connected to the valve core; the outer side surface of the valve core abuts against the inner wall of the exhaust pipe, and the valve body drives the valve core to move in the exhaust pipe and stop in front of the exhaust fan connection port or cross the rear side wall of the exhaust fan connection port.

2. The easy-to-maintain large-format packaging digital inkjet printer according to claim 1, characterized in that It also includes a plurality of fixing plates. The right side of the fixing plate is connected to the top of the frame, and the left side of the fixing plate is detachably connected to the top of the lifting cage. When disassembling and assembling the conveyor belt, the lifting cage rises and is connected to the frame through the corresponding fixing plate; after the disassembly and assembly of the conveyor belt are completed, the fixing plate is removed and the lifting cage descends.

3. The easy-to-maintain large-format packaging digital inkjet printer according to claim 1, characterized in that The exhaust pipe is also provided with a partition, and the switching valve is also provided with a sliding rod; The hollow partition is inserted between the exhaust fan connection port and the second connection port, the front end of the slide rod is connected to the output end of the valve body, the rear end of the slide rod passes through the partition and is connected to the rear end surface of the valve core, and the inner wall of the partition is gap-matched with the outer side surface of the slide rod of the valve body; The partition is close to the front of the exhaust fan connection port, and a gap is left between the exhaust fan connection port and the partition; When the front end surface of the valve core abuts against the rear plate surface of the partition, the second connection port is connected to the exhaust fan connection port, and the first connection port is separated from the exhaust fan connection port; when the front end surface of the valve core passes over the rear side wall of the exhaust fan connection port, the second connection port is separated from the exhaust fan connection port, and the first connection port is connected to the exhaust fan connection port.

4. The easy-to-maintain large-format packaging digital inkjet printer according to claim 1, wherein, The nozzle cleaning device comprises an upper cleaning plate, a lower cleaning plate, a movement control unit and a lifting control unit; The top surfaces of the upper cleaning tray and the lower cleaning tray are respectively mounted with a first spray cleaning head and a second spray cleaning head; The two ends of the upper cleaning tray and the two ends of the lower cleaning tray are respectively connected to the mobile control unit by transmission, and the mobile control unit drives the upper cleaning tray and the lower cleaning tray to move back and forth in the horizontal direction and approach or move away from each other; The two ends of the upper cleaning plate are also respectively connected to the lifting control unit, and the lifting control unit drives the upper cleaning plate to move up and down; When the upper cleaning tray is close to the lower cleaning tray, the lifting control unit drives the upper cleaning tray to rise upward, and the movement control unit drives the upper cleaning tray to move horizontally to above the lower cleaning tray, and the upper cleaning tray covers the lower cleaning tray.

5. The easy-to-maintain large-format packaging digital inkjet printer according to claim 4, wherein, The lifting control unit comprises a lifting cylinder, a guide assembly and a mounting base plate; The left and right ends of the upper cleaning plate are both provided with a lifting cylinder connection seat and a guide rod connection seat; The two lifting cylinder connection seats are respectively installed at the middle of the left and right ends of the upper cleaning plate; the guide rod connection seats are grouped in pairs, and the two guide rod connection seats are respectively installed at the front and rear sides of the lifting cylinder connection seat; The lifting cylinder is installed at the middle of the side of the mounting base plate away from the running direction of the adsorption platform, and two guide assemblies are respectively installed on the front and rear sides of the lifting cylinder; The guide assembly comprises a base and a guide rod, the lower end of the guide rod is inserted into the base, and the upper end of the guide rod is connected to the guide rod connecting seat; The output end of the lifting cylinder extends upward and is connected to the lifting cylinder connecting seat.

6. The easy-to-maintain large-format packaging digital inkjet printer according to claim 5, wherein, The lifting control unit also includes an induction electric eye and a plurality of buffers; The buffer is mounted on the side of the guide rod connecting seat away from the mounting seat plate, and the top of the buffer faces upward; The top of the buffer is an elastic body, and the top of the buffer abuts against the bottom surface of the guide rod connecting seat which moves downward and approaches the lowest position, and the buffer is used to buffer the descending speed of the upper cleaning plate; The induction electric eye is installed on the mounting base plate, and the induction electric eye is located between the lifting cylinder and the guide assembly; The induction photoelectric eye is signal-connected to the lifting air cylinder and the movement control unit, and the induction photoelectric eye is used to detect the specific position of the upper cleaning tray.

7. The easy-to-maintain large-format packaging digital inkjet printer according to claim 5, wherein The lifting control unit further includes a plurality of buffers; The buffers are installed on the opposite inner sides of the two mounting seat plates; The top end of the buffer is an elastic body, and the top end of the buffer abuts against the bottom surface of the upper cleaning tray, and is used to buffer the descending speed of the upper cleaning tray approaching the lowest position.

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