Adjustable printing device

[0038] First embodiment

[0039] Reference Figure 1~Figure 11 , The present invention discloses an adjustable printing device, which includes a main body 1, a control circuit board and an ink cartridge 9 for storing ink are arranged in the main body 1, and the lower end of the main body 1 is provided with a printing device electrically connected to the control circuit board. Nozzle 904, the ink cartridge 9 is provided with an ink outlet corresponding to the print nozzle 904, the body 1 is provided with roller assemblies 3 symmetrically on both sides of the print nozzle 904, and the roller assembly 3 is installed on the body 1 through an adjustment mechanism. The installation height is adjusted by the adjusting mechanism, and the distance from the working surface of the printing nozzle 904 is adjusted.

[0040] In order to ensure the same height of the roller assemblies 3 on both sides, a linkage structure is fixed around the outer side of the body 1 between the two roller assemblies 3, so that the two roller assemblies 3 are fixed.

[0041] Preferably, the side wall of the main body 1 is provided with a vertical installation slide groove and an adjusting rack 101, and the roller assembly 3 has an adjusting seat 301 and a roller 302 pivoted on the adjusting seat 301. The adjusting seat 301 It has a sliding seat matched with the installation sliding groove and is slidably installed on the outside of the main body 1 through the sliding seat, and the adjusting seat 301 is provided with a locking mechanism that cooperates with the adjusting rack 101, and the locking mechanism can be installed in the sliding groove It is locked and fixed at any position of the adjusting rack 101 within the sliding stroke. The adjusting mechanism is formed by installing the sliding groove, adjusting rack 101, adjusting seat 301 and locking mechanism. The adjusting seat 301 can be vertically slidably installed on the side of the main body 1 through the action of the sliding seat, and then the locking mechanism cooperates with the adjusting rack 101 to achieve locking.

[0042] In this way, the roller assembly 3 can be adjusted by the adjusting mechanism to adjust the distance protruding from the printing working end, and can also be retracted to the side of the main body 1 through the adjustment mechanism. It can be applied to different surfaces to be printed, meet the printing requirements of different printed items, and be ready for printing. When the printing surface is small and there are obstructions on the peripheral side, the roller assembly 3 can be retracted and located on the side of the main body 1, thereby avoiding the roller assembly 3 from abutting against the obstruction, which can effectively improve the printing quality and have a wider application range.

[0043] Such as figure 2 with image 3 As shown, as the first preferred implementation of the locking mechanism in this embodiment, the locking mechanism is provided with two cross-arranged connecting rods 304, and the intersection of the two connecting rods 304 is pivotally connected to the adjusting seat 301 to form a shear Forked structure, two connecting rods 304 are provided with locking teeth engaged with the adjusting rack 101 at one end thereof, and the two connecting rods 304 are provided with a pressing part 303 exposed to the adjusting seat 301 at one end facing away from the adjusting rack 101 The pressing portion 303 is located between the two connecting rods 304, so as to simultaneously push the connecting rod 304 when pressing inward, so as to keep the locking teeth away from the adjusting rack 101, and the locking mechanism also includes a set A second return spring between the connecting rod 304 and the adjusting seat 301. The second return spring has two and is arranged in one-to-one correspondence with the connecting rod 304. One end of the second return spring abuts against the connecting rod 304 and is locked One end and the other end of the teeth abut the adjusting seat 301 to keep the locking teeth meshing with the adjusting rack 101 in a normal state.

[0044] In order to facilitate control, the end of the pressing portion 303 away from the main body 1 is exposed on the adjusting base 301, that is, the pressing portion 303 penetrates the adjusting base 301 and the end facing away from the main body 1 is exposed on the surface of the adjusting base 301. In this way, pushing the pressing portion 303 from the outside can realize the separation of the locking tooth and the adjusting gear. In order to realize the installation of the second return spring, a mounting post can be provided between the back of the locking tooth and the adjusting seat 301, and the two ends of the second return spring can be sleeved on the mounting post to achieve positioning installation.

[0045] Correspondingly, the adjustment rack 101 has two settings. One is to set two adjustment racks 101 to correspond to a connecting rod 304, and the other is to increase the width of the adjustment rack 101 so that two The locking teeth on the connecting rod 304 are connected to the same adjusting rack 101.

[0046] In the locking mechanism in this embodiment, when the height of the roller assembly 3 needs to be adjusted, the pressing parts 303 on the adjusting seats 301 on both sides are simultaneously pressed. When the size of the body 1 is small, the adjusting seats on both sides can be simultaneously pressed with one hand The pressing part 303 on the 301 is convenient to operate and easier to apply force. The pressing part 303 pushes the connecting rod 304 so that the second return spring is compressed and the locking tooth is separated from the adjusting rack 101, so that the adjusting seats 301 on both sides can slide along the installation sliding groove. After the roller assembly 3 is moved to a suitable position, the pressing part 303 is released, the locking teeth re-engage the adjusting rack 101 under the action of the second return spring, and the pressing part 303 is forced to spring outward while the connecting rod 304 is reset. Up. Since the connecting rod 304 cannot be turned in the vertical direction, when the locking teeth engage with the adjusting rack 101, the adjusting seat 301 can be firmly locked in the position. And in this embodiment, the ends of the two connecting rods 304 are both provided with locking teeth, that is, there are four locking teeth on both sides of the body 1 for locking, and the locking relationship of the roller assembly 3 is more secure and stable, which is beneficial to ensure Stability and practicability in the working process.

[0047] Such as Figure 4 As shown, as the second preferred implementation of the locking mechanism in this embodiment, the locking mechanism is provided with a locking head 5, and one end of the locking head 5 close to the adjusting rack 101 is provided with a mating engagement therewith. The locking head 5 can be slidably mounted on the adjusting seat 301 away from the adjusting rack 101 or close to the adjusting rack 101. The locking head 5 has a control end exposed on the adjusting seat 301, and the locking mechanism is also It includes a first return spring arranged between the locking head 5 and the adjusting seat 301, and the first return spring is used to hold the locking head 5 so that the meshing teeth engage the adjusting rack 101.

[0048] In the locking mechanism of this embodiment, the locking head 5 uses the first return spring to engage the meshing tooth to adjust the rack 101 in the normal state to realize the locking of the roller assembly 3. When the height of the roller assembly 3 needs to be adjusted , By pulling the control end of the locking head 5 outwards to separate the meshing teeth from the adjusting rack 101 to release the locking, after moving the roller assembly 3 to the proper position, loosen the control end, the locking head 5 is in the first return spring Under the action of, the adjusting rack 101 is re-engaged and locked.

[0049] Such as Figure 5 As shown, as the third preferred implementation of the locking mechanism in this embodiment, the locking mechanism is provided with a locking wheel 6 pivoted on the adjusting seat 301, and the locking wheel 6 has a rotating head exposed outside the adjusting seat 301, At the same time, the outer surface of the locking wheel 6 is provided with a convex structure that can be inserted into the adjusting rack 101, and a reset torsion spring is arranged between the adjusting seat 301 and the locking wheel 6.

[0050] In the locking mechanism in this embodiment, in a normal state, the convex structure is locked into the adjusting rack 101 under the action of the reset torsion spring. During printing, the roller assembly 3 abuts against the printing surface and exerts an upward force on the adjusting seat 301. When the external force is transmitted to the locking wheel 6, the protruding structure is not meshed with the adjusting rack 101, causing the card Into the adjusting rack 101, the locking wheel 6 cannot rotate, so as to offset the external force. When the height of the roller assembly 3 needs to be adjusted, rotate the rotating head to make the protruding structure overcome the force of the reset torsion spring in reverse and escape the adjusting rack 101 to release the lock. After moving the roller assembly 3 to a suitable position, Loosen the rotating head, and under the action of the reset torsion spring, the convex structure on the locking wheel 6 is locked into the adjusting rack 101 again.

[0051] In order to realize the installation of the ink cartridge 9, preferably, the main body 1 is provided with a accommodating cavity with an open end, the ink cartridge 9 is installed in the accommodating cavity, and the main body 1 is provided with a flip cover 7 capable of opening and closing the accommodating cavity. . In this way, the flip cover 7 can be opened to replace the ink cartridge 9 after the ink is used up.

[0052] In view of the fact that a large amount of ink remains in the ink cartridge 9 in the traditional portable printing device, which causes cost waste and easily pollutes the environment, in this embodiment, the body 1 is provided with an inclined structure corresponding to the ink cartridge 9, and the inclined structure is used for Hold the ink cartridge 9 and tilt the ink cartridge 9 toward the position of the ink outlet, so that the ink in the ink cartridge 9 flows to the ink outlet, reducing ink residue.

[0053] Such as Image 6 with Figure 7 As shown, as a first preferred embodiment of the inclined structure, the accommodating cavity is provided on a side wall facing away from the ink outlet of the ink cartridge 9 with a limiting wall 103 that is inclined to the outside with respect to the vertical surface. It has a convex part that can be carried on the limiting wall 103. When the ink cartridge 9 is installed in the accommodating cavity, the convex part can abut against the limiting wall 103, so that the ink cartridge 9 is close to the ink outlet under the action of gravity. The side wall abuts against the accommodating cavity to realize the inclination of the ink cartridge 9 toward the ink outlet.

[0054] Preferably, the lower surface of the convex portion is set as a curved surface or an inclined surface, so as to cooperate with the limiting wall 103.

[0055] As a second preferred embodiment of the inclined structure, the accommodating cavity is provided with an elastic member at the upper position of the side wall away from the ink outlet of the ink cartridge 9. When the ink cartridge 9 is installed in the accommodating cavity, the elastic member can be used to hold The upper end of the side wall of the ink cartridge 9 facing away from the ink outlet, so that the side wall of the ink cartridge 9 close to the ink outlet abuts against the accommodating cavity, so that the ink cartridge 9 is inclined toward the ink outlet.

[0056] The elastic member can be arranged as an elastic cantilever that slopes downward and gradually extends into the containing cavity, or can be an elastic object made of elastic material.

[0057] Because there must be a certain gap between the accommodating cavity and the ink cartridge 9 to realize the installation of the ink cartridge 9. Therefore, in the above two embodiments, the ink cartridge 9 can be inclined toward the ink outlet by acting on the upper end position of the side wall of the ink cartridge 9 away from the ink outlet, thereby reducing ink residue. As the number of consumed ink cartridges 9 increases, a huge production cost will be saved. At the same time, it is beneficial to environmental protection and has strong practicability.

[0058] Such as Image 6 with Figure 7 As shown, the opening of the accommodating cavity faces upwards, the flip cover 7 is pivotally connected to one end of the accommodating cavity opening, and the body 1 is provided with an elastic buckle 8 that can buckle the flip cover 7 at the other end of the accommodating cavity opening. The flip cover 7 can be buckled by the elastic buckle 8 to close the opening of the containing cavity.

[0059] Specifically, the lower end of the elastic buckle 8 is pivotally connected to the main body 1 so that the upper end can swing around its lower end, and an end of the elastic buckle 8 close to the accommodating cavity is provided with a buckle platform for buckling the flip cover 7. The elastic buckle 8 A third return spring is provided at one end away from the accommodating cavity. One end of the third return spring supports the elastic buckle 8 and the other end supports the body 1, and the body 1 is provided at one end of the elastic buckle 8 close to the accommodating cavity Limited structure. In the actual production process, the limiting structure can be formed by arranging structures such as ribs or thimble in the body 1.

[0060] In this way, the elastic buckle 8 will abut against the limiting structure under the action of the third return spring, so that the buckle is always located at the opening of the accommodating cavity. When the flip cover 7 is closed, the upper end surface of the flip cover 7 can be buckled by a buckle to realize the fixation of the flip cover 7, thereby closing the opening of the accommodating cavity. At the same time, the elastic buckle 8 can also be pulled to the outside, so that the upper end moves away from the opening of the accommodating cavity, so that the flip cover 7 is released from the buckle table, so that the flip cover 7 can be turned over and the accommodating cavity can be opened.

[0061] Further, in order to improve the convenience of use, the flip cover 7 is provided with a spring on the end face of the accommodating cavity when the cover is closed. In this way, the ink cartridge 9 can be held by the spring, and a pretension force is applied to the ink cartridge 9 to ensure that the ink cartridge 9 is installed in place. . And when the elastic buckle 8 is pulled, the flip cover 7 will automatically pop up under the action of the spring to open the containing cavity, which is convenient to use and has strong convenience. In addition, the arrangement of the spring has lower requirements for dimensional accuracy than the method of directly pressing the ink cartridge 9 through the flip cover 7, which is beneficial to improve production efficiency and reduce production costs.

[0062] In order to facilitate manipulation, preferably, the main body 1 is provided with a handle 4 on the side wall close to the elastic buckle 8. The user can hold the handle 4 to control the main body 1 for printing, and the distance between the handle 4 and the elastic buckle 8 is relatively short, which is convenient for one-handed manipulation and one-handed replacement of the ink cartridge 9.

[0063] Further, a battery is arranged in the handle 4, and the battery is electrically connected to the control circuit board. The battery can be a rechargeable battery or an ordinary battery. When an ordinary battery is used, a battery removal cover is provided on the handle 4 to facilitate battery replacement. When a rechargeable battery is used, the charging method can be disassembled, or a charging interface can be provided on the body 1 or the handle 4 for charging. The charging interface can be set as a USB interface or a DC interface.

[0064] In this embodiment, arranging the battery in the handle 4 can reduce the volume of the main body 1, and the battery will increase the weight of the handle 4, relatively reducing the weight of the main body 1, reducing the body 1 to the arm when holding Load, torque, easy to hold.

[0065] Although the roller assembly 3 can be adjusted up and down, considering that the body 1 itself has a certain width and thickness, the size of the print head 904 is smaller than the size of the body 1, and is used on the surface to be printed with small areas such as cup bottoms and bowl bottoms and protrusions on the periphery. During printing, the lower end of the main body 1 easily abuts against the protrusion, so that the print nozzle 904 cannot be close to the surface to be printed, which affects the printing quality. For this reason, the printing nozzle 904 in this embodiment protrudes from the lower end surface of the body 1.

[0066] In this way, because the size of the print nozzle 904 is small, and the size of the bowl bottom and the bottom of the cup under the conventional size are larger than the size of the print nozzle 904, the print nozzle 904 can be properly extended into it when used in this type of printing situation. Print on the inner recess to ensure print quality.

[0067] In order to facilitate the protection of the print nozzle 904 after the printing work is completed, and at the same time avoid ink leakage, preferably, the lower end of the main body 1 is pivotally provided with a protective cover 2 which can cover the print nozzle 904 and open and fix it. The print head 904 is exposed.

[0068] Such as Image 6 As shown, the protective cover 2 includes a protective section 201 pivotally connected to the main body 1 and a clamping section 202 disposed at the end of the protective section 201 and inclined toward the main body 1. The clamping section 202 has a clamping platform on the outside, and Both the upper and lower sides of the table are provided with wedge-shaped surfaces, and the lower end of the main body 1 is provided with buckling recesses corresponding to the clamping table.

[0069] In this way, the clamping table can be directly pressed into the buckling recess or drawn out from the buckling recess from the outside under the action of external force through the wedge-shaped surface fitting and the deformability of the clamping section 202 itself. The setting of the clamping section 202 can keep a certain distance between the protection section 201 and the lower end surface of the main body 1, and can protect the protruding printing nozzle 904.

[0070] Further, a silicone sheet is provided on the end surface of the protective section 201 facing the print nozzle 904, and the silicone sheet is adhered to the protective section 201, and the size of the silicone sheet is larger than the size of the print nozzle 904 for covering the protective cover 2 on the body 1 at the lower end, cover and abut the print nozzle 904 to protect the print nozzle 904 and prevent ink leakage.

[0071] At the same time, in order to fix the opened protective cover 2, preferably, such as Picture 9 with Picture 8 As shown, the protective section 201 is pivotally connected to the outer edge of the main body 1, and the main body 1 is provided with a receiving recess 102 on the side wall close to the pivot end of the protective section 201. A positioning boss is provided, and the protective cover 2 can rotate around the pivot end into the receiving recess 102 and be fixed by the positioning boss. In addition, the depth of the receiving recess 102 is less than the distance from the end of the clamping section 202 to the protection section 201, so that when the protective cover 2 is fixed in the receiving recess 102, the end of the clamping section 202 protrudes from the side of the main body 1. The wall surface is convenient to pull the protective cover 2 out of the receiving recess 102 by pulling the clamping section 202.

[0072] Furthermore, the end of the protection section 201 is provided with an extension section at the lower end of the clamping section 202. When the protective cover 2 is closed to the lower end of the main body 1, the extension section can be pulled to drive the clamping section 202 out of the buckling recess, which is convenient for operation.

[0073] In this way, the protective cover 2 can be closed to the lower end of the body 1 when the printing device is not working, and can be turned over and fixed in the receiving recess 102 when the printing device is working. It is easy to use and can protect the printing nozzle 904 and prevent Ink leakage can also avoid hanging outside and affecting printing during printing.

[0074] Since the handle 4 is already provided on one side of the body 1, in order to avoid interference, the pivotal end of the protective cover 2 is located at the lower end of the other side wall of the body 1 opposite to the handle 4. In this way, there is no problem of interference between the setting of the receiving recess 102 and the opening and fixing of the protective cover 2 and the handle 4, which is convenient for size design and product production and assembly.

[0075] In addition, since the ink cartridge 9 is a consumable, it needs to be replaced frequently, and the body 1 needs to be used continuously. At the same time, the shape and size of the accommodating cavity may not be completely compatible with the ink cartridge 9. If the two need to be consistent, the size will be greatly improved. The demand for precision has increased production costs.

[0076] In view of this, in this embodiment, as Picture 10 with Picture 11 As shown, the main body 1 is provided with a protective shell corresponding to the ink cartridge 9, the ink cartridge 9 is detachably installed in the protective shell, the print nozzle 904 is fixedly installed at the ink outlet of the ink cartridge 9, and the print nozzle 904 has an extension The connecting contact 905 of the side wall of the ink cartridge 9 is provided with a connector 907 electrically connected to the control circuit board on the protective shell. The connector 907 has a flat cable 906 extending from the inside of the protective shell to the outside of the connecting contact 905, The flat cable 906 is provided with a spring contact 903 corresponding to the connection contact 905, so as to abut the connection contact 905 through the spring contact 903, so that the print head 904 is electrically connected to the control circuit board.

[0077] The protective shell is composed of a first shell 901 and a second shell 902 that are assembled and snapped together. The first shell 901 has a back plate and a number of card plates protruding from the edge of the back plate. The card plates are perpendicular to the back plate. The second housing 902 is buckled on the end of the card board. In this way, the ink cartridge 9 can be put into the card board from the outside of the first housing 901, and then the second housing 902 can be buckled to wrap the ink cartridge 9 in the cavity. The aforementioned connector 907, flat cable 906, and spring contact 903 are all arranged on the first housing 901, and in order to realize its installation, the first housing 901 is provided with a partition on the outside of the card board. There is an installation gap between them. The flat cable 906 is arranged in the installation gap, passes through the card board at a position outside the connection contact 905 on the side wall of the ink cartridge 9 and is provided with a spring contact 903 to realize the docking. In addition, the connector 907 is located at the upper end of the first housing 901, and is pressed and fixed when the second housing 902 is buckled. When the protective shell is inserted into the accommodating cavity from the upper end, the connector 907 is crimped to the preset connection structure of the control circuit board to realize electrical connection.

[0078] The outer size of the protective shell is adapted to the accommodating cavity, and the ink cartridge 9 is adapted to the cavity in the first housing 901. The protective shell can be recycled, and when replacing ink cartridges 9 of different sizes, only the protective shell corresponding to the cavity and the outer size of the housing cavity needs to be replaced, which can realize that one printing device is suitable for many different types. Structure of the cartridge 9. In addition, the connector 907, the spring contact 903, and the flat cable 906 can all be reused with the protective case. As the number of replacement ink cartridges 9 increases, a considerable production cost can be saved, which is beneficial to environmental protection. In addition, the spring contact 903 is connected to the print nozzle 904, which can ensure the stability of the electrical connection, and the problem of poor contact is unlikely to occur.

[0079] Furthermore, the control circuit board is provided with a first detection mechanism, and the first detection mechanism is exposed to the main body 1 to detect the printing quality of the printing nozzle 904. The first detection mechanism may be fixedly arranged on the outside of the main body 1, or may be an external arrangement, that is, the control circuit board is preset with an external interface outside the main body 1, and the external electric eye is connected through the external interface.

[0080] At the same time, the control circuit board can also be provided with a second detection mechanism. The second detection mechanism is a synchronization module built in the rolling assembly for detecting the rotation speed of the roller 302. For the specific structure setting and installation, please refer to the prior art with the patent number CN201721498606.8 and the patent name as a handheld portable printer, which will not be repeated here.

[0081] In addition, the control circuit board is also provided with conventional structures such as ink monitoring, work indicator light, power switch and start button.

[0082] Second embodiment

[0083] This embodiment uses the first embodiment as the main body. The main difference is that the adjustment mechanism in this embodiment replaces the adjustment rack 101 with a plurality of positioning holes arranged vertically, and correspondingly, the locking The mechanism is provided with a positioning column matched with the positioning hole to realize the lifting and locking of the roller assembly.