A small-size high-speed carton printer

Abstract

The present invention relates to a small-sized high-speed carton printer, comprising a chassis, a suction conveying platform horizontally arranged in the chassis and conveying in the front-to-back direction, a printing mechanism and a cleaning and moisturizing mechanism respectively arranged in the chassis and located above the suction conveying platform, a height adjustment mechanism arranged in the chassis for driving the printing mechanism to rise and fall, an ink supply mechanism arranged in the chassis for supplying ink to the printing mechanism, and an operating table arranged at one end outside the chassis; the operating table is used to control the actions of the suction conveying platform, the printing mechanism, the cleaning and moisturizing mechanism, the height adjustment mechanism and the ink supply mechanism; the chassis is provided with a feed port and a feed port at the front and rear ends of the suction conveying platform respectively; the present invention is not only small in size, reduces the floor space occupied, and is easy to transport, but also has cleaning and moisturizing functions, avoids clogging of the printing nozzle, and has high working efficiency, greatly reduces the production cost, and is worthy of promotion.

Description

Technical Field

[0001] The invention relates to the technical field of carton printing, in particular to a small-sized high-speed carton printer. Background Art

[0002] Cartons are one of the commonly used packaging materials for items. In order to improve the aesthetics of the packaging, patterns are printed on the cartons. For example, the carton digital printer with the patent number 201920904000.2 previously applied by our company has the following problems:

[0003] 1. The existing carton digital printers are large in size. For some manufacturers producing small-sized cartons, it is not only inconvenient to transport, but also greatly occupies the factory area and increases production costs.

[0004] 2. The existing carton digital printer prints by sliding the nozzle carriage along the guide rail, resulting in low production efficiency.

[0005] 3. Existing thermal foaming printers do not have cleaning and moisturizing functions. If the nozzle is not used for a long time, the residual ink in the nozzle will dry and solidify. When the nozzle is used again, the ink cannot be sprayed out due to the solidified ink blocking the nozzle, which will affect the normal use of the printer. Summary of the invention

[0006] The purpose of the present invention is to provide a small-sized high-speed carton printer in order to overcome the deficiencies of the prior art.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a small-sized high-speed carton printer, comprising a chassis, a suction conveying platform horizontally arranged in the chassis and conveying in the front-to-back direction, a printing mechanism and a cleaning and moisturizing mechanism respectively arranged in the chassis and located above the suction conveying platform, a height adjustment mechanism arranged in the chassis for driving the printing mechanism to rise and fall, an ink supply mechanism arranged in the chassis for supplying ink to the printing mechanism, and an operating table arranged at one end outside the chassis; the operating table is used to control the action of the suction conveying platform, the printing mechanism, the cleaning and moisturizing mechanism, the height adjustment mechanism and the ink supply mechanism; the chassis is respectively provided with a feed port and a feed port at the front and rear ends of the suction conveying platform.

[0008] Preferably, the printing mechanism includes a horizontally placed support platform and a plurality of print heads arranged on the support platform; each of the print heads is in the shape of an elongated strip and is placed vertically along the conveying direction of the suction conveying platform; the plurality of print heads are placed alternately front and back, and can form continuous printing along the vertical direction of the suction conveying platform.

[0009] Preferably, the total length of the plurality of printing nozzles is slightly smaller than the width of the suction conveying platform.

[0010] Preferably, the height adjustment mechanism includes a crossbeam horizontally arranged above the suction conveying platform and vertically placed along the conveying direction of the suction conveying platform, guide rails vertically arranged on both sides of the suction conveying platform, lifting frames slidably arranged on the two guide rails and connected to the two ends of the crossbeam at the top, racks vertically arranged on the two lifting frames, a rotating shaft placed parallel to the crossbeam and with both ends passing through the two sides of the suction conveying platform, a motor arranged on one side of the suction conveying platform for driving the rotating shaft to rotate, and two gears arranged on the rotating shaft and respectively meshing with the racks; the support platform is arranged on the crossbeam.

[0011] Preferably, the motor is fixedly connected to one side of the suction conveying platform via a motor seat; one of the gears is arranged in the motor seat.

[0012] Preferably, the motor is a stepper motor or a servo motor.

[0013] Preferably, the ink supply mechanism includes a primary ink supply unit and a secondary ink supply cartridge; the primary ink supply unit is connected to the secondary ink supply cartridge via a primary ink supply tube; an ink supply valve is provided on the primary ink supply tube; the secondary ink supply cartridge is connected to the print head via the secondary ink supply tube; the secondary ink supply cartridge is also connected to the atmosphere via a connecting tube; an air intake valve is provided on the connecting tube; a liquid level difference is provided between the ink level in the secondary ink supply cartridge and the print head height direction; a liquid level switch for detecting the ink level height is provided in the secondary ink supply cartridge; the ink supply valve, air intake valve and liquid level switch are all electrically connected to the operating console.

[0014] Preferably, an air pipe is also provided between the secondary ink supply cartridge and the print head; the air pipe is provided with an air pump for sucking the air in the print head into the secondary ink supply cartridge and a one-way valve for preventing air from entering the print head; the air pump is electrically connected to the operating table.

[0015] Preferably, a foldable feeding rack and a collecting rack are respectively provided at the front and rear ends of the suction conveying platform.

[0016] Preferably, the top of the chassis is provided with a reversible front flap and a reversible rear flap respectively.

[0017] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0018] 1. The present invention adopts a miniaturized design, and since the cleaning and moisturizing mechanism is arranged above the suction conveying platform instead of being arranged on the side of the suction conveying platform, the volume is small, occupying only two square meters, which not only reduces the floor space, but also facilitates transportation;

[0019] 2. The print heads in the printing mechanism of the present invention are all in the shape of long strips and are placed vertically along the conveying direction of the suction conveying platform. In addition, multiple print heads are placed front and back in an interlaced manner, which can form continuous printing along the vertical direction of the suction conveying platform, thereby improving work efficiency and greatly reducing production costs;

[0020] 3. The present invention has cleaning and moisturizing functions by adding a cleaning and moisturizing mechanism, thereby avoiding clogging of the printing nozzle and improving the printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The technical solution of the present invention is further described below in conjunction with the accompanying drawings:

[0022] Attached Figure 1 This is a schematic diagram of the structure of the small-sized high-speed carton printer of the present invention;

[0023] Attached Figure 2 It is a schematic diagram of the structure after the front cover and the rear cover of the present invention are opened;

[0024] Attached Figure 3 This is a schematic diagram of the structure of the present invention after removing the chassis;

[0025] Attached Figure 4 This is a schematic diagram of the structure of the present invention from another angle after the chassis is removed;

[0026] Attached Figure 5 It is a structural schematic diagram of the printing mechanism in the present invention;

[0027] Attached Figure 6 Schematic diagram of the ink path of the ink supply mechanism in the present invention.

[0028] Among them: 1. Chassis; 11. Feed inlet; 12. Feed rack; 13. Collecting rack; 14. Front flap; 15. Rear flap; 2. Operating table; 3. Suction and conveying platform; 4. Printing mechanism; 41. Support table; 42. Print nozzle; 5. Cleaning and moisturizing mechanism; 6. Height adjustment mechanism; 61. Beam; 62. Guide rail; 63. Lifting frame; 64. Rack; 65. Rotating shaft; 66. Motor; 67. Gear; 68. Motor seat; 7. Ink supply mechanism; 70. Primary ink supply unit; 71. Secondary ink supply cartridge; 72. Primary ink supply tube; 73. Ink supply valve; 74. Secondary ink supply tube; 75. Inlet valve; 76. Liquid level switch; 77. Air pipe; 78. Air pump; 79. One-way valve. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Attached Figure 1-6The small-size high-speed carton printer described in the present invention comprises a chassis 1, a suction conveying platform 3 horizontally arranged in the chassis 1 and conveying in the front-to-back direction, a printing mechanism 4 and a cleaning and moisturizing mechanism 5 respectively arranged in the chassis 1 and located above the suction conveying platform 3, a height adjustment mechanism 6 arranged in the chassis 1 for driving the printing mechanism 4 to rise and fall, an ink supply mechanism 7 arranged in the chassis 1 for supplying ink to the printing mechanism 4, and an operating table 2 arranged at one end outside the chassis 1; the operating table 2 is used to control the operation of the suction conveying platform 3, the printing mechanism 4, the cleaning and moisturizing mechanism 5, the height adjustment mechanism 6 and the ink supply mechanism 7; the chassis 1 is respectively provided with a feed port 11 and a discharge port at the front and rear ends of the suction conveying platform 3.

[0031] During operation: the staff or automated equipment places the cartons to be printed on the suction conveying platform 3 through the feed port 11, and then the suction conveying platform 3 drives the cartons to be conveyed toward the discharge port. When passing through the printing mechanism 4, the printing mechanism 4 prints the cartons according to the pre-designed pattern, and finally the suction conveying platform 3 delivers the printed cartons through the discharge port to complete the carton printing; wherein the suction conveying platform 3 can generate negative pressure, absorb the cartons while transporting, and avoid the carton from being offset during the conveying process, which can effectively improve the processing accuracy;

[0032] When the printing mechanism 4 is in the printing state, the cleaning and moisturizing mechanism 5 is located on one side of the printing mechanism 4; when the printing mechanism 4 is blocked, the height adjustment mechanism 6 drives the printing mechanism 4 to rise, and then the cleaning and moisturizing mechanism 5 is transported to the bottom of the printing mechanism 4 to clean the printing mechanism 4; when the printing mechanism 4 is not used for a long time, the height adjustment mechanism 6 drives the printing mechanism 4 to rise, and then the cleaning and moisturizing mechanism 5 is transported to the bottom of the printing mechanism 4, and finally the height adjustment mechanism 6 drives the printing mechanism 4 to fall onto the cleaning and moisturizing mechanism 5, and the printing mechanism 4 is sealed and moisturized by the cleaning and moisturizing mechanism 5, thereby avoiding blockage of the printing mechanism 4 and improving the printing quality; here, the height adjustment mechanism 6 can also adjust the height of the printing mechanism 4 according to the thickness of the carton, so as to adapt to cartons of different thicknesses.

[0033] Furthermore, the printing mechanism 4 includes a horizontally placed support platform 41 and five printing heads 42 arranged on the support platform 41; each of the printing heads 42 is in the shape of a long strip and is placed vertically along the conveying direction of the suction conveying platform 3; the five printing heads 42 are placed front to back in an alternating manner, and can form continuous printing along the vertical direction of the suction conveying platform 3; when the suction conveying platform 3 drives the carton through the printing mechanism 4, since the five printing heads 42 are placed vertically along the conveying direction of the suction conveying platform 3, continuous printing can be formed. Compared with the existing walking printing cart, the printing speed is faster, thereby improving work efficiency.

[0034] Furthermore, the print head 42 is a HP452dw print head; wherein the HP452dw print head has the following characteristics:

[0035] 1. High basic resolution:

[0036] The basic resolution of traditional printheads is mostly 600DPI or 800DPI, but this printhead has 42,240 nozzles and a resolution of 1,200DPI. Under the same conditions and the same number of printheads, the printed image is clearer and has better details.

[0037] 2. Single printhead has four color channels:

[0038] Multi-color printheads can save the problem of single-color printheads needing to be spliced, which reduces the difficulty of assembly and manufacturing on the one hand, and greatly improves the color calibration accuracy on the other hand;

[0039] 3. Single nozzle prints with wider width:

[0040] The printing width of a single nozzle reaches 216mm. If you use a traditional nozzle, you need to splice 4-9 nozzles to achieve such a large width; therefore, using this nozzle can greatly reduce the manufacturing cost and difficulty of the whole machine;

[0041] 4. Special inkjet principle:

[0042] Traditional piezoelectric printheads do not have a heating device, so when the temperature is low, the change in ink viscosity can easily cause ink breakage, which in turn causes a decrease in print quality. However, this printhead uses the thermal foaming principle to spray ink, and has its own heating based on the inkjet principle, so there is no problem of ink breakage caused by low temperature environments.

[0043] Furthermore, the total length of the plurality of printing nozzles 42 is slightly smaller than the width of the suction conveying platform 3, so that the printing range is maximized.

[0044] Further, the height adjustment mechanism 6 includes a crossbeam 61 horizontally arranged above the suction conveying platform 3 and vertically arranged along the conveying direction of the suction conveying platform 3, guide rails 62 respectively vertically arranged on both sides of the suction conveying platform 3, lifting frames 63 respectively slidably arranged on the two guide rails 62 and the tops are respectively connected to the two ends of the crossbeam 61, racks 64 respectively vertically arranged on the two lifting frames 63, a rotating shaft 65 placed parallel to the crossbeam 61 and with both ends passing through the two sides of the suction conveying platform 3, a motor 66 arranged on one side of the suction conveying platform 3 for driving the rotating shaft 65 to rotate, and two gears 67 arranged on the rotating shaft 65 and respectively meshed with the racks 64; the support platform 41 is arranged on the crossbeam 61; when it is necessary to drive the printing mechanism 4 to rise and fall: the rotating shaft 65 is driven by the motor 66 to drive the two gears 67 to rotate, and because the gears 67 are meshed with the racks 64, the two lifting frames 63 are driven to drive the crossbeam 61 to rise and fall, which has the advantages of simple and compact structure, smooth movement, and high movement accuracy.

[0045] Furthermore, the motor 66 is fixedly connected to one side of the suction conveying platform 3 via a motor seat 68 ; one of the gears 67 is disposed in the motor seat 68 .

[0046] Furthermore, the motor 66 is a stepper motor or a servo motor, which can be selected according to the application scenario.

[0047] Furthermore, the ink supply mechanism 7 includes a primary ink supply unit 70 and a secondary ink supply cartridge 71; the primary ink supply unit 70 is connected to the secondary ink supply cartridge 71 through a primary ink supply tube 72; an ink supply valve 73 is provided on the primary ink supply tube 72; the secondary ink supply cartridge 71 is connected to the print head 42 through a secondary ink supply tube 74; the secondary ink supply cartridge 71 is also connected to the atmosphere through a connecting tube; an air intake valve 75 is provided on the connecting tube; a liquid level difference is provided between the ink level in the secondary ink supply cartridge 71 and the height direction of the print head 42; a liquid level switch 76 for detecting the height of the ink level is provided in the secondary ink supply cartridge 71; the ink supply valve 73, the air intake valve 75 and the liquid level switch 76 are all electrically connected to the operating table 2; when working: through The liquid level switch 76 can detect the ink liquid level in the secondary ink supply cartridge 71 in real time and send a signal to the operating console 2. The operating console 2 controls the ink supply valve 73 and the air intake valve 75 to maintain the ink liquid level and the print head 42 within the set liquid level difference range, thereby improving the printing quality. Specifically, the air intake valve 75 is opened and the ink supply valve 73 is closed through the operating console 2. Since there is a liquid level difference between the ink liquid level in the secondary ink supply cartridge 71 and the print head 42 in the height direction, the ink in the secondary ink supply cartridge 71 is transported to the print head 42 for printing under the action of atmospheric pressure. When the liquid level switch 76 detects that the ink liquid level is lower than the set liquid level difference range, the operating console 2 opens the ink supply valve 73, and the primary ink supply unit 70 replenishes ink to the secondary ink supply cartridge 71, thereby maintaining the ink liquid level and the print head 42 within the set liquid level difference range, thereby improving the printing quality. The primary ink supply unit 70 is provided with CMYK four-color ink barrels for color printing.

[0048] Furthermore, an air pipe 77 is provided between the secondary ink supply cartridge 71 and the print head 42; the air pipe 77 is provided with an air pump 78 for sucking the air in the print head 42 into the secondary ink supply cartridge 71 and a one-way valve 79 for preventing air from entering the print head 42; the air pump 78 is electrically connected to the operating table 2; when working: the air or bubbles in the print head 42 can be sucked into the secondary ink supply cartridge 71 through the air pump 78, thereby improving the printing quality of the print head 42.

[0049] Furthermore, a foldable feeding rack 12 and a receiving rack 13 are respectively provided at the front and rear ends of the suction conveying platform 3; the present invention facilitates feeding and receiving of materials by respectively providing a feeding rack 12 and a receiving rack 13 at the front and rear ends of the suction conveying platform 3, and the feeding rack 12 and the receiving rack 13 are foldable for easy transportation.

[0050] Furthermore, the top of the chassis 1 is provided with a reversible front flap 14 and a reversible rear flap 15 . The present invention facilitates maintenance by providing the reversible front flap 14 and the reversible rear flap 15 .

[0051] The above are only specific application examples of the present invention and do not constitute any limitation on the protection scope of the present invention. Any technical solution formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the present invention.

Claims

1. A small-sized high-speed carton printer, characterized by: It comprises a chassis, a suction conveying platform horizontally arranged in the chassis and conveying in the front-back direction, a printing mechanism and a cleaning and moisturizing mechanism respectively arranged in the chassis and located above the suction conveying platform, a height adjustment mechanism arranged in the chassis for driving the printing mechanism to rise and fall, an ink supply mechanism arranged in the chassis for supplying ink to the printing mechanism, and an operating table arranged at one end outside the chassis; The operating table is used to control the actions of the suction conveying platform, the printing mechanism, the cleaning and moisturizing mechanism, the height adjustment mechanism and the ink supply mechanism; The printing mechanism includes a horizontally placed support platform and a plurality of printing nozzles arranged on the support platform; each of the printing nozzles adopts the thermal foaming principle to spray ink, is in a long strip shape, and is placed vertically along the conveying direction of the suction conveying platform; the plurality of printing nozzles are staggered front and back, and can form continuous printing along the conveying direction vertical to the suction conveying platform; The height adjustment mechanism includes a crossbeam horizontally arranged above the suction conveying platform and vertically arranged along the conveying direction of the suction conveying platform, guide rails respectively arranged vertically on both sides of the suction conveying platform, lifting frames respectively slidably arranged on the two guide rails and the tops of which are respectively connected to the two ends of the crossbeam, racks respectively arranged vertically on the two lifting frames, a rotating shaft placed parallel to the crossbeam and with both ends passing through the two sides of the suction conveying platform respectively, a motor arranged on one side of the suction conveying platform for driving the rotating shaft to rotate, and two gears arranged on the rotating shaft and respectively meshing with the racks; the support platform is arranged on the crossbeam; The ink supply mechanism comprises a primary ink supply unit and a secondary ink supply cartridge; the primary ink supply unit is connected with the secondary ink supply cartridge through a primary ink supply pipe; an ink supply valve is arranged on the primary ink supply pipe; the secondary ink supply cartridge is connected with the print head through the secondary ink supply pipe; the secondary ink supply cartridge is also connected with the atmosphere through a connecting pipe; an air intake valve is arranged on the connecting pipe; a liquid level difference is arranged between the ink level in the secondary ink supply cartridge and the print head height direction; a liquid level switch for detecting the ink level height is arranged in the secondary ink supply cartridge; an air pipe is also arranged between the secondary ink supply cartridge and the print head; an air pump for sucking air in the print head into the secondary ink supply cartridge and a one-way valve for preventing air from entering the print head are respectively arranged on the air pipe; the ink supply valve, the air intake valve, the liquid level switch and the air pump are all electrically connected to the operating table; The chassis is provided with a feed inlet and a discharge inlet at the front and rear ends of the air suction conveying platform respectively.

2. The small-size high-speed carton printer according to claim 1, characterized in that: The total length of the plurality of printing nozzles is smaller than the width of the air suction conveying platform.

3. The small-size high-speed carton printer according to claim 2, characterized in that: The motor is fixedly connected to one side of the suction conveying platform through a motor seat; one of the gears is arranged in the motor seat.

4. The small-size high-speed carton printer according to claim 3, characterized in that: The motor is a stepper motor or a servo motor.

5. The small-size high-speed carton printer according to any one of claims 1 to 4, characterized in that: The front and rear ends of the air suction conveying platform are respectively provided with a foldable feeding rack and a collecting rack.

6. The small-size high-speed carton printer according to claim 5, characterized in that: The top of the case is respectively provided with a reversible front flap and a rear flap.

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