A UV inkjet printing mechanism for precise positioning on sorting lines

Abstract

This utility model discloses a UV coding mechanism for precise positioning on a sorting line, including a base, a feeding mechanism on the base, and a frame fixedly connected to the top of the base. A coding component is mounted on the front of the frame, and a fixing bracket is fixedly connected to the back of the frame. The fixing bracket is C-shaped and contains a baffle plate. A first handle is fixedly connected to the top of the baffle plate. This utility model can filter particulate impurities in the UV ink required for printing to prevent them from clogging the printhead. The baffle plate positions the product to ensure that the coding component can print the mark on the designated position on the product packaging. Compared with sensor-based positioning, this effectively avoids the offset or misalignment of the marking position caused by synchronization errors due to feedback delay, thus greatly improving the accuracy of sorting line positioning.

Description

Technical Field

[0001] This utility model belongs to the field of UV inkjet printing technology, and in particular relates to a UV inkjet printing mechanism for precise positioning in sorting lines. Background Technology

[0002] UV inkjet printing is an inkjet marking technology based on ultraviolet (UV) curing technology. UV ink is sprayed onto the surface of an object through a printhead, and then instantly cured by UV light to form a pattern or text with high adhesion and high definition. During logistics sorting, to facilitate accurate product positioning on the sorting line, UV inkjet printing technology is typically used to pre-print relevant information such as production date, batch number, and QR code on product packaging.

[0003] According to the search, a UV inkjet printer with publication number CN220681955U is disclosed on the Chinese Patent Network. This UV inkjet printer can be used for the precise positioning of products on the sorting line, but there are some defects and shortcomings that need to be improved: (1) Some existing UV inkjet printers have difficulty effectively filtering particulate impurities in UV ink when performing UV inkjet printing. These particulate impurities enter the printhead with the UV ink, and over time, they will cause the printhead to become clogged, thus affecting its normal use; (2) Due to the structural design of some existing UV inkjet printers, when performing UV inkjet printing on products on the sorting line, it is usually necessary to use sensors to locate the product position to ensure that when the product moves to the location of the printhead, the UV inkjet printer can print the mark on the designated position on the product packaging. However, the sensor often has a feedback delay. When the product on the sorting line moves at a fast speed, the printhead and the product are prone to synchronization errors, which will cause the printing position of the mark to shift or even become misaligned, thereby affecting the accuracy of the sorting line positioning. Therefore, in response to the above problems, the UV inkjet coding mechanism for precise positioning on sorting lines provided by this utility model is of great significance. Utility Model Content

[0004] This invention provides a UV coding mechanism for precise positioning on a sorting line. The coding component prints markings onto the surface of product packaging, facilitating precise positioning on the sorting line. A filter removes particulate impurities from the UV ink, trapping them above the filter screen and preventing clogging of the printhead. After prolonged use, the filter can be removed from the ink cartridge for regular cleaning. A baffle blocks the feeding channel, preventing products from moving on the conveyor belt and positioning them directly below the coding component. This ensures the coding component prints markings on the designated locations on the product packaging. Compared to sensor-based positioning, this method effectively avoids synchronization errors caused by feedback delays, preventing misalignment or offset of the marking position and significantly improving the accuracy of sorting line positioning. In summary, this invention solves the problems in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model discloses a UV inkjet printing mechanism for precise positioning in a sorting line, including a base, a feeding mechanism on the base, a frame fixedly connected to the top of the base, an inkjet printing assembly on the front of the frame, and a fixing frame fixedly connected to the back of the frame. The fixing frame is C-shaped and a baffle plate is installed inside the fixing frame. A first handle is fixedly connected to the top of the baffle plate.

[0007] The feeding mechanism includes two pairs of roller frames, which are fixedly connected to the base and located on both sides of the frame. A feeding roller is provided between each pair of roller frames. A roller shaft is installed between one pair of roller frames, and a motor is installed on the other pair of roller frames. One feeding roller is installed on the output shaft of the motor, and the other feeding roller is movably connected to the shaft of the roller shaft. A feeding belt is connected between the two feeding rollers. A feeding channel is provided between the top of the feeding belt and the bottom surface of the frame.

[0008] The coding assembly includes a mounting frame, on which a pair of lamp holders are fixedly connected to the inner walls of both sides. The lamp holders are symmetrically distributed on the inner walls of both sides of the mounting frame, and several UV lamps are electrically connected between each pair of lamp holders. The top of the mounting frame has an installation opening, in which an ink cartridge is installed. A printhead is provided at the bottom of the ink cartridge, and a filter is provided inside the ink cartridge. A cover is installed on the top of the ink cartridge, and a second handle is fixedly connected to the top of the cover.

[0009] The filter element includes a filter frame, and a filter screen is installed on the inner wall of the filter frame.

[0010] Furthermore, both the filter holder and the ink cartridge are rectangular, and the outer length and width of the filter holder are equal to the inner length and width of the ink cartridge, respectively.

[0011] Furthermore, the mounting opening is rectangular, with its length and width corresponding to the outer length and width of the ink cartridge, respectively. The top edge of the ink cartridge protrudes outward, and a sealing block is fixedly connected to the bottom of the cartridge cover. The sealing block has a rectangular cross-section, with its length and width corresponding to the inner length and width of the ink cartridge, respectively.

[0012] Furthermore, the mounting bracket is n-shaped, with a pair of mounting seats fixedly connected to both outer walls of the bracket. The mounting seats have mounting holes. The frame is n-shaped, with two pairs of studs fixedly connected to its front side. The studs are symmetrically distributed on both sides of the front side of the frame, and their diameters correspond to the diameters of the mounting holes. The center of each stud corresponds one-to-one with the center of each mounting hole. Each stud is threaded with a nut that mates with it.

[0013] Furthermore, the baffle plate is L-shaped with a rectangular cross-section, and the width and thickness of the baffle plate are equal to the length and width of the inner wall of the fixed frame, respectively. The distance between the lower top surface and the bottom surface of the baffle plate is equal to the distance between the upper top surface of the frame and the bottom of the feeding channel.

[0014] Furthermore, a number of buffer pads are provided on the side of the baffle plate near the feeding channel. The buffer pads are elongated and are distributed linearly at equal intervals along the width direction of the baffle plate.

[0015] The present invention has the following advantages over the prior art:

[0016] (1) When using the UV inkjet printing mechanism for precise positioning of sorting line in this utility model, the marking can be printed on the surface of product packaging through the inkjet printing component so as to make precise positioning of sorting line in the future. The filter can filter particulate impurities in UV ink and keep them above the filter screen, thereby effectively preventing particulate impurities from entering the print head with UV ink and causing blockage. After long-term use, the filter can be removed from the ink cartridge so as to clean the filter regularly.

[0017] (2) When using the UV inkjet printing mechanism for precise positioning of sorting line in this utility model, the baffle can block the feeding channel to prevent the product on the feeding belt from continuing to move and make the product stop directly below the inkjet printing component. This ensures that the inkjet printing component can print the mark on the designated position on the product packaging. Compared with the positioning method of sensor, it effectively avoids the offset or even misalignment of the printing position of the mark due to the synchronization error caused by the feedback delay, thereby greatly improving the accuracy of sorting line positioning.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front structural diagram of a UV inkjet coding mechanism for precise positioning on a sorting line according to the present invention.

[0021] Figure 2 This is a schematic diagram of the back structure of a UV inkjet coding mechanism for precise positioning on a sorting line according to the present invention.

[0022] Figure 3 This is a front structural diagram of the base and feeding mechanism in this utility model;

[0023] Figure 4 This is a schematic diagram of the back structure of the base and the feeding mechanism in this utility model;

[0024] Figure 5 This is a schematic diagram of the baffle plate in this utility model;

[0025] Figure 6 This is a schematic diagram of the mounting bracket in this utility model;

[0026] Figure 7 This is a schematic diagram of the ink cartridge structure in this utility model;

[0027] Figure 8 This is a schematic diagram of the filter element in this utility model;

[0028] Figure 9 This is a schematic diagram of the structure of the box cover in this utility model.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Base; 2. Frame; 3. Fixing frame; 4. Baffle plate; 5. First handle; 6. Roller frame; 7. Feed roller; 8. Roller shaft; 9. Motor; 10. Feed belt; 11. Feed channel; 12. Mounting frame; 13. Lamp holder; 14. UV lamp tube; 15. Mounting port; 16. Ink cartridge; 17. Printhead; 18. Cartridge cover; 19. Second handle; 20. Filter frame; 21. Filter screen; 22. Sealing block; 23. Mounting base; 24. Mounting hole; 25. Stud; 26. Nut; 27. Buffer pad. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Please see Figure 1-9 As shown, the present invention provides a UV inkjet printing mechanism for precise positioning of a sorting line, including a base 1, a feeding mechanism on the base 1, a frame 2 fixedly connected to the top of the base 1, an inkjet printing component on the front of the frame 2, and a fixing frame 3 fixedly connected to the back of the frame 2. The fixing frame 3 is C-shaped, and a baffle plate 4 is installed inside the fixing frame 3. A first handle 5 is fixedly connected to the top of the baffle plate 4.

[0034] The feeding mechanism includes two pairs of roller frames 6, which are fixedly connected to the base 1 and located on both sides of the frame 2. Each pair of roller frames 6 is provided with a feeding roller 7. A roller shaft 8 is installed between one pair of roller frames 6, and a motor 9 is installed on the other pair of roller frames 6. One feeding roller 7 is installed on the output shaft of the motor 9, and the other feeding roller 7 is movably connected to the shaft of the roller shaft 8. A feeding belt 10 is connected between the two feeding rollers 7. A feeding channel 11 is provided between the top of the feeding belt 10 and the bottom surface of the frame 2. The feeding roller 7 can be driven to rotate by the drive motor 9. When the feeding roller 7 rotates, it can drive the feeding belt 10 to rotate together. At this time, the products on the sorting line can be transferred through the feeding belt 10.

[0035] The coding assembly includes a mounting bracket 12. A pair of lamp holders 13 are fixedly connected to the inner walls of both sides of the mounting bracket 12. The lamp holders 13 are symmetrically distributed on the inner walls of both sides of the mounting bracket 12, and several UV lamps 14 are electrically connected between each pair of lamp holders 13. The lamp holders 13 can be connected to an external power source, which powers the UV lamps 14 to emit ultraviolet light. The top of the mounting bracket 12 has a mounting opening 15, into which an ink cartridge 16 is installed. A printhead 17 is located at the bottom of the ink cartridge 16, and a filter is installed inside the ink cartridge 16. A cover 18 is installed on the top of the ink cartridge 16, and a second handle 19 is fixedly connected to the top of the cover 18. The printhead 17 is used to store the UV ink required for UV coding. The UV ink is composed of 30-40% main resin, 20-30% active monomer and photoinitiator. This ink is liquid when it is not cured. After being irradiated by the ultraviolet light emitted by the UV lamp 14, it can undergo a photochemical reaction and quickly cure into a solid mark with high hardness and high adhesion. The printhead 17 integrates a large number of piezoelectric crystals and is connected to an external control system. The external control system includes a computer and a driver board, which is responsible for receiving data such as text, barcodes and images and converting them into instructions for the printhead 17. Through the CPU processing the signals, the piezoelectric crystals in the printhead 17 can deform under strong pulse voltage and squeeze the ink to be ejected from the nozzle in order to form tiny ink droplets.

[0036] The filter element includes a filter frame 20, and a filter screen 21 is installed on the inner wall of the filter frame 20. When UV ink is introduced into the ink cartridge 16, the UV ink will first come into contact with the filter screen 21. At this time, the particulate impurities in the UV ink can be filtered through the filter screen 21 and left above the filter screen 21, thereby effectively preventing particulate impurities from entering the print head 17 with the UV ink and causing blockage.

[0037] Both the filter holder 20 and the ink cartridge 16 are rectangular, and the outer length and width of the filter holder 20 are equal to the inner length and width of the ink cartridge 16. After the filter holder 20 is placed in the ink cartridge 16, it can fit against the inner wall of the ink cartridge 16 to achieve a fixing effect. After long-term use, the filter holder 20 can be removed from the ink cartridge 16 so that the filter screen 21 can be cleaned regularly.

[0038] The mounting opening 15 is rectangular, with its length and width corresponding to the outer length and width of the ink cartridge 16, respectively. The top edge of the ink cartridge 16 protrudes outward, allowing it to be inserted into and fitted against the inner wall of the mounting opening 15. At this time, the top edge of the ink cartridge 16 can be fitted against the top of the mounting bracket 12 for fixation. When the UV ink is used up, the ink cartridge 16 can be removed from the mounting opening 15 for replenishment. A sealing block 22 is fixedly connected to the bottom of the cover 18. The sealing block 22 has a rectangular cross-section, with its length and width corresponding to the inner length and width of the ink cartridge 16, respectively. When the cover 18 is placed on top of the ink cartridge 16, the sealing block 22 can be inserted into and fitted against the inner wall of the ink cartridge 16 for sealing, thereby preventing external impurities or moisture from entering the ink cartridge 16 and causing the UV ink to become contaminated or damp.

[0039] The mounting bracket 12 is n-shaped, with a pair of mounting seats 23 fixedly connected to its two outer walls. The mounting seats 23 have mounting holes 24. The frame 2 is n-shaped, with two pairs of studs 25 fixedly connected to its front. The studs 25 are symmetrically distributed on both sides of the front of the frame 2, and their diameters correspond to the diameters of the mounting holes 24. The center of each stud 25 corresponds one-to-one with the center of each mounting hole 24. Each stud 25 is threaded with a nut 26 that mates with it. Each stud 25 can be aligned and passed through the corresponding mounting hole 24. The nut 26 is then threaded onto each stud 25 and tightened. The mounting bracket 12, together with the entire inkjet printing assembly, is fixed to the front of the frame 2 through the mutual cooperation between the studs 25, the mounting holes 24, and the nuts 26. By unscrewing the nuts 26, the mounting bracket 12, together with the entire inkjet printing assembly, can be removed from the frame 2 for regular maintenance of the relevant components in the inkjet printing assembly, and also for quick repair or replacement in case of failure.

[0040] The baffle plate 4 is L-shaped with a rectangular cross-section. Its width and thickness correspond to the length and width of the inner wall of the fixed frame 3, respectively. The distance between the bottom and upper surfaces of the baffle plate 4 corresponds to the distance between the top surface of the frame 2 and the bottom of the feeding channel 11. By gripping the first handle 5, the baffle plate 4 can be moved up and down along the fixed frame 3. When the bottom surface of the baffle plate 4 is against the top surface of the frame 2, the bottom height of the baffle plate 4 is flush with the bottom height of the feeding channel 11. At this time, the baffle plate 4 can block the feeding channel 11 to prevent... The product on the feed belt 10 is stopped from moving and is positioned directly below the coding component. This ensures that the coding component can print the mark on the designated position on the product packaging. Compared with the sensor positioning method, this effectively avoids the offset or even misalignment of the mark printing position caused by the synchronization error due to feedback delay, thereby greatly improving the accuracy of the sorting line positioning. After printing is completed, hold the first handle 5 and lift the baffle 4 upwards until the baffle 4 leaves the feed channel 11. At this time, the product can continue to move along the feed channel 11.

[0041] Among them, the baffle plate 4 is provided with several buffer pads 27 on the side near the feeding channel 11. The buffer pads 27 are long strips and are distributed linearly at equal intervals along the width direction of the baffle plate 4. The buffer pads 27 can be made of elastic materials such as sponge and are fixed by adhesives. Each buffer pad 27 can play a buffering and protective role to avoid the product from directly contacting the baffle plate 4 and causing collision and wear.

[0042] The circuits, electronic components, and chip modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0043] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.

[0044] The working principle of this utility model is as follows:

[0045] In use, the baffle plate 4 can be lowered to block the feeding channel 11, and then the drive motor 9 drives the feeding roller 7 to rotate. When the feeding roller 7 rotates, it drives the feeding belt 10 to rotate as well, so that the products on the sorting line can be transferred through the feeding belt 10. When the product on the feeding belt 10 comes into contact with the baffle plate 4, the baffle plate 4 can prevent the product on the feeding belt 10 from moving further and stop the product directly below the coding assembly. At this time, the external control system can convert the data into an electrical signal and drive the piezoelectric crystal in the printhead 17, so that the printhead 17 ejects ink droplets at a frequency of thousands of times per second. The size and position of the ink droplets are precisely controlled by the crystal deformation to form a high-resolution dot matrix pattern. After the sprayed UV ink covers the surface of the product packaging, it is immediately exposed to the ultraviolet light emitted by the UV lamp tube 14, causing the photoinitiator in the UV ink to undergo a polymerization reaction, thereby forming a cured film. This curing process is extremely fast, usually completed in milliseconds, so that the pattern or text will not be erased or diffused, thus completing the marking and printing of the products on the sorting line. After the printing is completed, hold the first handle 5 and lift the baffle plate 4 upward until the baffle plate 4 leaves the feeding channel 11. At this time, the product can continue to move along the feeding channel 11.

[0046] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A UV inkjet printing mechanism for precise positioning on a sorting line, characterized in that, The device includes a base, on which a feeding mechanism is provided, and a frame is fixedly connected to the top of the base. A coding component is provided on the front of the frame, and a fixing frame is fixedly connected to the back of the frame. The fixing frame is C-shaped, and a baffle plate is installed inside the fixing frame. A first handle is fixedly connected to the top of the baffle plate. The feeding mechanism includes two pairs of roller frames, which are fixedly connected to the base and located on both sides of the frame. A feeding roller is provided between each pair of roller frames. A roller shaft is installed between one pair of roller frames, and a motor is installed on the other pair of roller frames. One feeding roller is installed on the output shaft of the motor, and the other feeding roller is movably connected to the shaft of the roller shaft. A feeding belt is connected between the two feeding rollers. A feeding channel is provided between the top of the feeding belt and the bottom surface of the frame. The coding assembly includes a mounting frame, on which a pair of lamp holders are fixedly connected to the inner walls of both sides. The lamp holders are symmetrically distributed on the inner walls of both sides of the mounting frame, and several UV lamps are electrically connected between each pair of lamp holders. The top of the mounting frame has an installation opening, in which an ink cartridge is installed. A printhead is provided at the bottom of the ink cartridge, and a filter is provided inside the ink cartridge. A cover is installed on the top of the ink cartridge, and a second handle is fixedly connected to the top of the cover. The filter element includes a filter frame, and a filter screen is installed on the inner wall of the filter frame.

2. The UV inkjet printing mechanism for precise positioning on a sorting line according to claim 1, characterized in that, Both the filter holder and the ink cartridge are rectangular, and the outer length and width of the filter holder are equal to the inner length and width of the ink cartridge, respectively.

3. A UV inkjet printing mechanism for precise positioning on a sorting line according to claim 1, characterized in that, The mounting opening is rectangular, with its length and width corresponding to the outer length and width of the ink cartridge, respectively. The top edge of the ink cartridge protrudes outward, and a sealing block is fixedly connected to the bottom of the cartridge cover. The sealing block has a rectangular cross-section, with its length and width corresponding to the inner length and width of the ink cartridge, respectively.

4. A UV inkjet printing mechanism for precise positioning on a sorting line according to claim 1, characterized in that, The mounting bracket is n-shaped, with a pair of mounting seats fixedly connected to its two outer walls. The mounting seats have mounting holes. The frame is n-shaped, with two pairs of studs fixedly connected to its front. The studs are symmetrically distributed on both sides of the front of the frame, and their diameters correspond to the diameters of the mounting holes. The center of each stud corresponds one-to-one with the center of each mounting hole. Each stud is threaded with a nut that matches it.

5. A UV inkjet printing mechanism for precise positioning on a sorting line according to claim 1, characterized in that, The baffle plate is L-shaped with a rectangular cross-section. The width and thickness of the baffle plate are equal to the length and width of the inner wall of the fixed frame, respectively. The distance between the bottom surface and the bottom surface of the baffle plate is equal to the distance between the top surface of the frame and the bottom of the feeding channel.

6. A UV inkjet printing mechanism for precise positioning on a sorting line according to claim 1, characterized in that, Several buffer pads are provided on the side of the baffle plate near the feeding channel. The buffer pads are long strips and are distributed linearly at equal intervals along the width direction of the baffle plate.

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