A nozzle moisturizing device

Abstract

The utility model discloses a nozzle moisturizing device sets up on the printer, include: support, lever assembly includes support axle and balance plate, support axle sets up on the support, press bar, the first through -hole is seted up on the printing platform, the support is provided with the limit board, the limit board is provided with the second through -hole, the first through -hole with the second through -hole corresponds, the middle part of press bar is provided with the first boss, one side of nozzle is provided with the press block, the press block is used for pressing press bar to drive balance plate swing, moisturizing subassembly, the bottom of printing platform is provided with vertical direction module group, vertical direction module group is used for guiding moisturizing subassembly moves along the vertical direction, the printing platform is seted up with the first empty hole, the first empty hole contains moisturizing subassembly passes through. The utility model does not need to avoid moisturizing subassembly when paper placement, can make full use of the space of printing platform, reduces the overall size of printer.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, specifically to a printhead moisturizing device. Background Technology

[0002] An archive stamp printer is a device specifically designed to print archive stamp numbers. It is mainly used to replace the traditional manual stamping method, improve archiving efficiency, and facilitate the standardized management of archives.

[0003] Existing archival stamp printers include a print platform, frame, drive assembly, and printhead. The drive assembly moves the printhead. During printing, paper is placed on the print platform, the drive assembly moves the printhead along a set path, and the printhead sprays ink onto the paper to achieve printing.

[0004] To prevent ink from curing and clogging the printhead, a moisturizing silicone pad is typically placed on the printing platform. In standby mode, the drive assembly first moves the printhead directly above the silicone pad, then lowers it until it contacts the silicone pad. The silicone pad seals the printhead, keeping it moist.

[0005] However, existing moisturizing silicone protrudes from the printing platform. When placing paper, the paper needs to avoid the moisturizing silicone to be placed flat. Therefore, the moisturizing silicone needs to occupy a certain amount of lateral space, resulting in an increase in the size of the printer. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, this utility model provides a printhead moisturizing device. When placing paper, there is no need to avoid the moisturizing component, which can make full use of the space of the printing platform and reduce the overall size of the printer. Moreover, the state switching is achieved by using the gravity of the moisturizing component and the printer's original drive component to drive the printhead to descend. The whole process does not require additional power or sensors, has a simple structure, and reduces costs.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A printhead moisturizing device is installed on a printer, the printer including a printing platform, a drive assembly, and a printhead, comprising:

[0009] A support is positioned below the printing platform;

[0010] A lever assembly includes a support shaft and a balance plate rotatably connected to the support shaft, the support shaft being mounted on the bracket;

[0011] A pressure bar is located on the top side of the balance plate. A first through hole is provided on the printing platform. A limit plate is provided on the bracket. A second through hole is provided on the limit plate. The first through hole and the second through hole correspond to each other. A first boss is provided in the middle of the pressure bar. The upper part of the pressure bar passes through the first through hole, and the lower part of the pressure bar passes through the second through hole. A pressing block is provided on one side of the nozzle. The pressing block is used to press the pressure bar to drive the balance plate to swing.

[0012] A moisturizing component is located on the other side of the top of the balance plate. A vertical guide module is provided at the bottom of the printing platform. The vertical guide module is used to guide the moisturizing component to move in the vertical direction. The printing platform has a first clearance hole, which accommodates the moisturizing component to pass through.

[0013] As a further improvement to the above technical solution, the moisturizing component includes a base plate, a nozzle seat disposed on the base plate, and moisturizing silicone disposed on the nozzle seat. The base plate is horizontally disposed, and the vertical guide module is movably connected to the base plate.

[0014] As a further improvement to the above technical solution, the printing platform is provided with a first panel, the first clearance hole is provided on the first panel, the top of the nozzle holder is provided with a second panel, the second panel is provided with a second clearance hole, the first clearance hole is used to prevent the second panel from being emptied, and the second clearance hole is used to prevent the moisturizing silicone from being emptied.

[0015] As a further improvement to the above technical solution, slots are provided on both sides of the nozzle holder, and elastic buckles are provided on both sides of the moisturizing silicone, with the elastic buckles engaging in the slots.

[0016] As a further improvement to the above technical solution, the vertical guide module includes several vertically arranged guide rods. The top end of each guide rod is connected to the bottom of the printing platform, and the bottom end of each guide rod is provided with a second boss. Several third through holes are opened on the base plate, and each of the guide rods corresponds one-to-one with one of the third through holes. The diameter of the third through hole is larger than the diameter of the guide rod and smaller than the diameter of the second boss.

[0017] As a further improvement to the above technical solution, the lever assembly also includes a torsion spring, which is sleeved on the outer periphery of the support shaft, and the two ends of the torsion spring respectively abut against the bottom sides of the balance plate.

[0018] As a further improvement to the above technical solution, a sliding sleeve is installed in the second through hole, and a third boss is provided on the top of the sliding sleeve. The sliding sleeve is sleeved on the outer periphery of the pressure rod.

[0019] As a further improvement to the above technical solution, a telescopic spring is sleeved on the lower part of the pressure rod, the top end of the telescopic spring abuts against the first boss, and the bottom end of the telescopic spring abuts against the third boss.

[0020] As a further improvement to the above technical solution, the balance plate is bent into an obtuse angle structure, and one end of the balance plate is folded downward to form an arc-shaped contact part, which abuts against the bottom of the base plate.

[0021] As a further improvement to the above technical solution, the bottom of the balance plate is provided with side plates at both ends along the axial direction of the support shaft, and both side plates are connected to the support shaft by bearings.

[0022] The beneficial effects of this utility model are as follows: This utility model provides a nozzle moisturizing device. By setting up a pressure bar and lever assembly, during printing, the moisturizing assembly descends to be level with or below the printing platform under the action of gravity. The moisturizing assembly presses down on one side of the top of the balance plate to drive the balance plate to rotate clockwise around the support shaft. The balance plate drives the pressure bar to rise, and the top of the pressure bar protrudes out of the printing platform. At this time, the pressure bar is located near the edge of the printing platform. When placing paper, there is no need to avoid the moisturizing assembly, which can make full use of the space of the printing platform and reduce the overall size of the printer.

[0023] In standby mode, the drive assembly drives the printhead to descend. The pressing block on one side of the printhead presses the pressure rod first. The pressure rod presses down on the other side of the top of the balance plate, causing the balance plate to rotate counterclockwise around the support shaft. The balance plate drives the moisturizing assembly to rise, thereby sealing the nozzle of the printhead and keeping the nozzle moist to prevent the ink in the printhead from curing and clogging.

[0024] Moreover, the state switching is achieved by using the gravity of the moisturizing component and the printer's original drive component to drive the printhead to descend. The whole process does not require additional power or sensors, resulting in a simple structure and reduced costs. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the structure of a printer provided in an example of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of a nozzle moisturizing device provided in an example of this utility model;

[0028] Figure 3 yes Figure 2 Exploded view;

[0029] Figure 4 yes Figure 2 A sectional view.

[0030] Reference numerals: 100-Printing platform, 110-First panel, 111-First clearance hole, 200-Drive assembly, 300-Nozzle, 310-Pressing block, 400-Bracket, 410-Limiting plate, 411-Second through hole, 500-Lever assembly, 510-Support shaft, 520-Balance plate, 521-Arc-shaped contact part, 522-Side plate, 523-Bearing, 530-Torsion spring, 600-Pressure rod, 610-First boss, 620-Sliding sleeve, 630-Third boss, 640-Telescopic spring, 700-Moisturizing assembly, 710-Base plate, 720-Nozzle holder, 721-Slot, 730-Moisturizing silicone, 731-Elastic buckle, 740-Second panel, 741-Second clearance hole, 750-Guide rod, 751-Second boss, 711-Third through hole. Detailed Implementation

[0031] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0032] Reference Figure 1 The printer provided in one embodiment of this utility model includes a printing platform 100, a drive assembly 200, and a printhead 300. The printing platform 100 is used to place paper, and the drive assembly 200 is used to drive the printhead 300 to move horizontally and vertically.

[0033] Reference Figures 2 to 4 An embodiment of this utility model also provides a printhead moisturizing device, which is installed on a printer and includes a bracket 400, a lever assembly 500, a pressure rod 600, and a moisturizing assembly 700.

[0034] Specifically, the bracket 400 is located below the printing platform 100, and the lever assembly 500 includes a support shaft 510 and a balance plate 520 rotatably connected to the support shaft 510. The support shaft 510 is located on the bracket 400, and the pressure rod 600 and the moisturizing assembly 700 are located on the top two sides of the balance plate 520, respectively. Both the pressure rod 600 and the moisturizing assembly 700 can move in the vertical direction.

[0035] Furthermore, the printing platform 100 has a first through hole, the bracket 400 has a limiting plate 410, the limiting plate 410 has a second through hole 411, the first through hole and the second through hole 411 correspond to each other, the middle of the pressure rod 600 has a first boss 610, the first through hole accommodates the upper part of the pressure rod 600 through which it passes, the second through hole 411 accommodates the lower part of the pressure rod 600 through which it passes, the nozzle 300 has a pressing block 310 on one side, the pressing block 310 is used to press the pressure rod 600 to drive the balance plate 520 to swing, the bottom of the printing platform 100 has a vertical guide module, the vertical guide module is used to guide the moisturizing component 700 to move in the vertical direction, the printing platform 100 has a first clearance hole 111, the first clearance hole 111 accommodates the moisturizing component 700 through which it passes.

[0036] During printing, the moisturizing component 700 descends to be level with or below the printing platform 100 under the influence of gravity. The moisturizing component 700 presses down on one side of the top of the balance plate 520, causing the balance plate 520 to rotate clockwise around the support shaft 510. The balance plate 520 causes the pressure rod 600 to rise until the top of the first protrusion 610 abuts against the bottom of the printing platform 100. The top of the pressure rod 600 protrudes from the printing platform 100. At this time, the pressure rod 600 is located near the edge of the printing platform 100. When placing paper, there is no need to avoid the moisturizing component 700, which can make full use of the space of the printing platform 100 and reduce the overall size of the printer.

[0037] In standby mode, the drive assembly 200 drives the printhead 300 to descend. The pressing block 310 on one side of the printhead 300 first presses the pressure rod 600. The pressure rod 600 presses down on the other side of the top of the balance plate 520, so as to drive the balance plate 520 to rotate counterclockwise around the support shaft 510. The balance plate 520 drives the moisturizing assembly 700 to rise, so as to seal the nozzle of the printhead 300, keep the nozzle of the printhead 300 moist, and prevent the ink in the printhead 300 from curing and clogging.

[0038] Moreover, the state switching is achieved by using the gravity of the moisturizing component 700 and the movement of the printer's original drive component 200 to drive the printhead 300 to descend. The whole process does not require additional power or sensors, and the structure is simple, reducing costs.

[0039] In some preferred embodiments, the moisturizing component 700 includes a base plate 710, a nozzle 300 seat disposed on the base plate 710, and a moisturizing silicone 730 disposed on the nozzle 300 seat. The base plate 710 is horizontally disposed, and the vertical guide module is movably connected to the base plate 710.

[0040] Understandably, during printing, the base plate 710, printhead 300 seat, and moisturizing silicone 730 descend as a whole under the influence of gravity. In standby mode, the balance plate 520 moves the base plate 710 upward along the vertical guide module. The base plate 710 then moves the printhead 300 seat and moisturizing silicone 730 upward, allowing the moisturizing silicone 730 to seal the nozzle of the printhead 300. The vertical guide module restricts the base plate 710 to move only in the vertical direction and prevents it from shifting laterally. This ensures that the moisturizing silicone 730 can accurately align with the nozzle of the printhead 300, thus improving the sealing accuracy.

[0041] Furthermore, the printing platform 100 is provided with a first panel 110, and a first clearance hole 111 is provided on the first panel 110. The top of the printhead 300 base is provided with a second panel 740, and the second panel 740 has a second clearance hole 741. The size of the first clearance hole 111 is slightly larger than the size of the second panel 740. The first clearance hole 111 is used to prevent the second panel 740 from being exposed. The size of the second clearance hole 741 is slightly larger than the size of the moisturizing silicone 730. The second clearance hole 741 is used to prevent the moisturizing silicone 730 from being exposed. The second panel 740 can prevent dust or paper scraps from entering the printhead 300 base and causing contamination.

[0042] Furthermore, slots 721 are provided on both sides of the nozzle 300 seat, and elastic buckles 731 are provided on both sides of the moisturizing silicone 730, which are engaged in the slots 721.

[0043] Understandably, during installation, the elastic clips 731 on both sides of the moisturizing silicone 730 are respectively inserted into the two slots 721; during disassembly, the moisturizing silicone 730 can be separated from the nozzle 300 by pressing the elastic clips 731 on both sides of the moisturizing silicone 730. Thus, the moisturizing silicone 730 can be disassembled and assembled without the use of tools, improving the convenience of disassembly and assembly. Moreover, when the elastic clips 731 are inserted into the slots 721, the elastic clips 731 can always provide elasticity to ensure the stability of the connection of the moisturizing silicone 730.

[0044] In some preferred embodiments, the vertical guide module includes a plurality of vertically arranged guide rods 750, the top end of the guide rods 750 being connected to the bottom of the printing platform 100, and the bottom end of the guide rods 750 being provided with a second boss 751. A plurality of third through holes 711 are opened on the base plate 710, and the plurality of guide rods 750 correspond one-to-one with the plurality of third through holes 711. The diameter of the third through hole 711 is larger than the diameter of the guide rod 750 and smaller than the diameter of the second boss 751.

[0045] Understandably, during printing, the base plate 710 slides downwards along the guide rod 750 until its bottom abuts against the second boss 751, which prevents the base plate 710 from sliding down. In standby mode, the base plate 710 slides upwards along the guide rod 750 until its top abuts against the bottom of the printing platform 100. Therefore, the guide rods 750 guide the base plate 710 to move vertically, preventing the base plate 710 and other parts on it from tilting. This design is simple, easy to manufacture, and reduces manufacturing costs.

[0046] In some preferred embodiments, the lever assembly 500 further includes a torsion spring 530, which is sleeved on the outer periphery of the support shaft 510, with its two ends abutting against the bottom sides of the balance plate 520.

[0047] Understandably, during standby, the pressure rod 600 presses down on one side of the balance plate 520, and the torsion spring 530 applies resistance to the balance plate 520, thereby buffering the impact of the pressure rod 600 on the balance plate 520. At the same time, the torsion spring 530 stores energy. During printing, the moisturizing component 700 descends under the action of gravity, pressing down on the other side of the balance plate 520. At the same time, the torsion spring 530 releases energy, providing torque to the balance plate 520 to assist the balance plate 520 in rotating. This ensures that the balance plate 520 rotates smoothly and avoids movement jamming due to insufficient gravity.

[0048] In some preferred embodiments, a sliding sleeve 620 is installed in the second through hole 411, and a third boss 630 is provided on the top of the sliding sleeve 620. The sliding sleeve 620 is sleeved on the outer periphery of the pressure rod 600.

[0049] Understandably, the sliding sleeve 620 can guide the pressure rod 600 to slide in the vertical direction, reduce the movement resistance of the pressure rod 600, avoid friction between the pressure rod 600 and the second through hole 411, and extend the life of the pressure rod 600 and the limiting plate 410.

[0050] Furthermore, a telescopic spring 640 is sleeved on the lower part of the pressure rod 600. The top end of the telescopic spring 640 abuts against the first boss 610, and the bottom end of the telescopic spring 640 abuts against the third boss 630.

[0051] Understandably, when in standby mode, the pressing block 310 on one side of the printhead 300 presses the pressure rod 600, compressing the telescopic spring 640, which can absorb the impact force, avoid damage to parts and reduce vibration; when printing, the telescopic spring 640 extends, and the elastic force of the telescopic spring 640 drives the pressure rod 600 to rise, thereby assisting the pressure rod 600 to reset and preventing the moisturizing component 700 from jamming due to insufficient gravity.

[0052] In some preferred embodiments, the balance plate 520 is bent at an obtuse angle, and one end of the balance plate 520 is folded downward to form an arc-shaped contact portion 521, which abuts against the bottom of the base plate 710.

[0053] Understandably, the balance plate 520 is bent at an obtuse angle, which can disperse stress, prevent local deformation of the balance plate 520, and improve its service life. The arc-shaped contact part 521 can form point contact or line contact with the bottom of the base plate 710. When the balance plate 520 rotates around the support shaft 510, the arc-shaped contact part 521 can slide or roll on the bottom of the base plate 710, thereby reducing friction and lowering motion resistance.

[0054] Furthermore, the bottom of the balance plate 520 is provided with side plates 522 at both ends along the axial direction of the support shaft 510, and both side plates 522 are connected to the support shaft 510 through bearings 523.

[0055] Understandably, the inner ring of bearing 523 is fixed to the support shaft 510, and the outer ring of bearing 523 is connected to the side plate 522. This avoids direct friction between the support shaft 510 and the balance plate 520. Bearing 523 bears the main wear, thereby preventing wear on the support shaft 510 and the balance plate 520, increasing their service life, and reducing motion resistance, making the balance plate 520 rotate smoothly and improving the stability of the equipment.

[0056] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A printhead moisturizing device, disposed on a printer, the printer comprising a printing platform, a drive assembly, and a printhead, characterized in that, include: A support is positioned below the printing platform; A lever assembly includes a support shaft and a balance plate rotatably connected to the support shaft, the support shaft being mounted on the bracket; A pressure bar is located on the top side of the balance plate. A first through hole is provided on the printing platform. A limit plate is provided on the bracket. A second through hole is provided on the limit plate. The first through hole and the second through hole correspond to each other. A first boss is provided in the middle of the pressure bar. The upper part of the pressure bar passes through the first through hole, and the lower part of the pressure bar passes through the second through hole. A pressing block is provided on one side of the nozzle. The pressing block is used to press the pressure bar to drive the balance plate to swing. A moisturizing component is located on the other side of the top of the balance plate. A vertical guide module is provided at the bottom of the printing platform. The vertical guide module is used to guide the moisturizing component to move in the vertical direction. The printing platform has a first clearance hole, which accommodates the moisturizing component to pass through.

2. The nozzle moisturizing device according to claim 1, characterized in that, The moisturizing component includes a base plate, a nozzle holder disposed on the base plate, and moisturizing silicone disposed on the nozzle holder. The base plate is horizontally disposed, and the vertical guide module is movably connected to the base plate.

3. A nozzle humidification device according to claim 2, characterized in that, The printing platform is provided with a first panel, and the first clearance hole is provided on the first panel. The top of the nozzle holder is provided with a second panel, and the second panel has a second clearance hole. The first clearance hole is used to prevent the second panel from being exposed, and the second clearance hole is used to prevent the moisturizing silicone from being exposed.

4. A nozzle humidification device according to claim 3, characterized in that, Both sides of the nozzle holder are provided with slots, and both sides of the moisturizing silicone are provided with elastic buckles, which are engaged in the slots.

5. A nozzle moisturizing device according to claim 2, characterized in that, The vertical guide module includes several vertically arranged guide rods. The top end of each guide rod is connected to the bottom of the printing platform. The bottom end of each guide rod is provided with a second boss. Several third through holes are opened on the base plate. Each of the guide rods corresponds to one of the third through holes. The diameter of each third through hole is larger than the diameter of the guide rod and smaller than the diameter of the second boss.

6. A nozzle humidification device according to claim 1, characterized in that, The lever assembly also includes a torsion spring, which is sleeved on the outer periphery of the support shaft, with its two ends abutting against the bottom sides of the balance plate.

7. A nozzle moisturizing device according to claim 1, characterized in that, A sliding sleeve is installed in the second through hole, and a third boss is provided on the top of the sliding sleeve. The sliding sleeve is sleeved on the outer periphery of the pressure rod.

8. A nozzle moisturizing device according to claim 7, characterized in that, The lower part of the pressure rod is fitted with a telescopic spring, the top end of the telescopic spring abuts against the first boss, and the bottom end of the telescopic spring abuts against the third boss.

9. A nozzle moisturizing device according to claim 2, characterized in that, The balance plate is bent at an obtuse angle, and one end of the balance plate is folded downward to form an arc-shaped contact part, which abuts against the bottom of the base plate.

10. A nozzle moisturizing device according to claim 1, characterized in that, The bottom of the balance plate is provided with side plates at both ends along the axial direction of the support shaft, and both side plates are connected to the support shaft by bearings.

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