Automatic ink adding device, printing machine head and printing machine

Abstract

The utility model relates to an automatic ink adding device, a printing machine head and a printing machine. The automatic ink adding device comprises a rack, a driving assembly and an ink supply assembly. The driving assembly comprises a driving motor arranged on the rack and a lead screw nut transmission structure connected with the driving motor. The printing ink supply assembly comprises an installation support connected with the lead screw nut transmission structure, a printing ink supply container arranged on the installation support and a printing ink extrusion assembly arranged on the printing ink supply container. The technical problems that in the prior art, manual ink changing accuracy is poor, printing quality is unstable, ink adding efficiency is low, regular maintenance and adjustment are needed when ink is added through a simple mechanical device, and operation cost is high can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board printing, and particularly relates to an automatic ink adding device, a printing head and a printing machine. Background Art

[0002] With the development of the electronic manufacturing industry, the solder mask screen printing technology is widely used in the manufacturing process of printed circuit boards. Through this solder mask screen printing technology, a protective layer can be formed on specific areas of the circuit board using solder mask screen printing ink to prevent short circuits between the wires on the circuit board. During the printing process, ink addition is a key step, directly affecting the printing quality and efficiency of the circuit board.

[0003] In traditional technologies, the addition of solder mask screen printing ink is mainly achieved through manual operation. For example, a common ink addition method is for an operator to judge when to add ink based on experience and then manually pour the ink into the ink container of the printing machine. The disadvantage of this method is that the operator's experience affects the accuracy of ink addition, resulting in unstable printing quality; at the same time, the process of manually adding ink is cumbersome and inefficient.

[0004] Another existing method is to use a simple mechanical device, such as a pumping system that adds ink at a fixed time and quantity. This system can automatically add ink according to the set time or ink volume. However, the disadvantage of this method is that due to changes in factors such as ambient temperature and ink viscosity, the ink addition volume may be unstable, thus affecting the printing quality. In addition, this system also requires regular maintenance and adjustment, and when there are many types of ink, the pipeline needs to be replaced, and the replacement operation takes a long time, increasing the operating cost of the equipment. Summary of the Utility Model

[0005] The utility model provides an automatic ink adding device, a printing head and a printing machine, which can solve the technical problems in traditional technologies, such as poor accuracy in manual ink replacement, unstable printing quality, low efficiency in adding ink, and the need for regular maintenance and adjustment and high operating costs when using a simple mechanical device to add ink.

[0006] To solve the above technical problems, the utility model provides an automatic ink adding device, including:

[0007] A frame;

[0008] A driving component, including a driving motor arranged on the frame and a lead screw nut transmission structure connected to the driving motor; and,

[0009] An ink supply component, including a mounting bracket connected to the lead screw nut transmission structure, an ink supply container arranged on the mounting bracket, and an ink extrusion component arranged on the ink supply container.

[0010] Optionally, the ink extrusion assembly includes a pressing piston movably disposed in the ink supply container and a gas driving mechanism communicated with the ink supply container. The gas driving mechanism is configured to drive the pressing piston to move in the ink supply container so as to extrude the ink in the ink supply container.

[0011] Optionally, the ink supply container includes an ink supply cylinder disposed on the mounting bracket and an ink supply needle protruding from the bottom end of the ink supply cylinder. The pressing piston is movably disposed on the top side of the ink supply cylinder.

[0012] The gas driving mechanism includes a gas supply source, a gas supply pipeline connecting the gas supply source and the top of the ink supply cylinder, and a gas regulating valve disposed on the gas supply pipeline.

[0013] Optionally, the ink extrusion assembly includes an ink baffle disposed on the mounting bracket. The ink baffle protrudes outside the bottom end of the ink supply cylinder and is disposed on the bottom side or the circumferential side of the ink supply needle.

[0014] Optionally, the ink extrusion assembly includes an ink sensor disposed at the bottom end of the ink supply cylinder.

[0015] Optionally, the mounting bracket includes a mounting connection frame connected to the lead screw-nut transmission structure and a mounting fixing frame connected to the mounting connection frame.

[0016] The mounting fixing frame includes a cylinder body fixing frame limiting to the circumferential side of the cylinder body of the ink supply cylinder and a cylinder bottom fixing frame connected to the cylinder body fixing frame. The bottom end of the ink supply cylinder abuts against the cylinder bottom fixing frame, and the ink supply needle protrudes outside the cylinder bottom fixing frame. The cylinder body fixing frame is connected to the mounting connection frame.

[0017] Optionally, the machine frame includes a plurality of frame seats and a frame mounting plate disposed on the plurality of frame seats.

[0018] The driving motor is a stepping motor located at one end of the frame mounting plate, and the lead screw-nut transmission structure is disposed on the frame mounting plate.

[0019] Optionally, the lead screw-nut transmission structure includes a driving lead screw rotatably disposed along the length direction of the frame mounting plate and a transmission nut threadedly connected to the driving lead screw. The driving lead screw is connected to the driving motor, and the mounting bracket is connected to the transmission nut.

[0020] A sliding guide rail is extended and provided along the length direction of the frame mounting plate, and the mounting bracket is slidably clamped on the sliding guide rail.

[0021] Optionally, the driving assembly includes a limit inductor respectively arranged at two ends of the frame mounting plate, and the two limit inductors respectively correspond to two moving limit positions of the transmission nut.

[0022] In addition, the present utility model further provides a printing head, comprising:

[0023] A head frame;

[0024] A printing blade mechanism, including a first blade assembly and a second blade assembly respectively arranged on two sides of the head frame; and,

[0025] The automatic ink adding device as described above, arranged on the head frame, and the ink supply container of the automatic ink adding device is arranged to incline towards the first blade assembly or the second blade assembly.

[0026] Optionally, the first blade assembly includes a first blade arranged vertically, and a first lifting driving member connected to the first blade, and the first lifting driving member is arranged on one side surface of the head frame;

[0027] The second blade assembly includes a second blade arranged to incline towards the first blade, and a second lifting driving member connected to the second blade, and the second lifting driving member is arranged on the other side surface of the head frame, and the ink supply container is arranged to incline towards the first blade and the second blade.

[0028] In addition, the present utility model further provides a printing machine, comprising a printing main machine, and the printing head as described above arranged on the printing main machine.

[0029] The beneficial effects brought by the technical solution provided by the present utility model include:

[0030] The automatic ink adding device can be installed on the printing machine through the frame, and the ink extrusion assembly of the ink supply assembly can extrude the ink stored in the ink supply container, so that the ink can be automatically added and supplied when the printing machine performs ink printing on the circuit board; moreover, the driving motor of the driving assembly can drive the screw nut transmission structure to work, so that the screw nut transmission structure drives the ink supply assembly to move linearly and reciprocally, and the ink can be added and supplied to different printing positions.

[0031] During the process of ink printing on the circuit board, the ink is automatically supplied through the automatic ink addition device, which is not affected by the operator's experience. The ink output volume and speed can be controlled through the ink extrusion component according to the printing requirements, and the ink output position can be adjusted through the driving motor and the driving screw-nut transmission structure of the driving component, ensuring the accuracy of ink addition, making the printing quality stable and reliable, and the efficiency of automatic ink addition is relatively high. In addition, by controlling the ink output volume and speed through the ink extrusion component, it is not affected by changes in factors such as environmental temperature and ink viscosity, ensuring the stability of ink addition, making the printing quality stable and reliable. Moreover, by replacing or cleaning the ink supply container and filling different inks in different ink supply containers, different printing requirements can be met without the need for regular maintenance and adjustment of the device system, nor the need to replace the pipeline, which can reduce the operation cost of the equipment. Only the ink supply container can be replaced, and rapid ink replacement can be achieved in production, improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0033] Figure 1 Schematic three-dimensional structure of the automatic ink addition device according to the embodiment of the present invention Figure 1 ;

[0034] Figure 2 Schematic three-dimensional structure of the automatic ink addition device according to the embodiment of the present invention Figure 2 ;

[0035] Figure 3 Schematic three-dimensional structure of the automatic ink addition device according to the embodiment of the present invention Figure 3 ;

[0036] Figure 4 Schematic three-dimensional structure of the printing head according to the embodiment of the present invention Figure 1 ;

[0037] Figure 5 Schematic three-dimensional structure of the printing head according to the embodiment of the present invention Figure 2 ;

[0038] Figure 6 Schematic three-dimensional structure diagram of the printing machine according to the embodiment of the present invention.

[0039] In the figure: 1. Printing press; 10. Printing head; 20. Main printing unit; 100. Automatic ink adding device; 110. Frame; 112. Frame base; 114. Frame mounting plate; 116. Sliding guide rail; 120. Driving assembly; 122. Driving motor; 124. Lead screw-nut transmission structure; 1242. Driving lead screw; 1244. Transmission nut; 126. Limit inductor; 130. Ink supply assembly; 132. Mounting bracket; 1322. Mounting connecting frame; 1324. Mounting fixing frame; 134. Ink supply container; 1342. Ink supply cylinder; 1344. Ink supply needle; 136. Ink extrusion assembly; 1362. Extrusion piston; 1364. Gas driving mechanism; 1366. Ink baffle; 1368. Ink inductor; 200. Head frame; 300. Printing squeegee mechanism; 310. First squeegee assembly; 312. First squeegee; 314. First lifting driving member; 320. Second squeegee assembly; 322. Second squeegee; 324. Second lifting driving member. Detailed implementation manners

[0040] For the purposes of making the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the scope of protection of the present utility model.

[0041] As Figures 1 to 3 shown, the present utility model provides an automatic ink adding device 100, which includes a frame, a driving assembly 120 disposed on the frame, and an ink supply assembly 130 connected to the driving assembly 120. The ink supply assembly 130 can automatically add ink when the circuit board is subjected to solder mask screen printing by the printing press, and the driving assembly 120 can also drive the ink supply assembly 130 to move on the frame so as to add ink to different printing positions.

[0042] Specifically, the driving assembly 120 may include a driving motor 122 disposed on the frame, and a lead screw-nut transmission structure 124 connected to the driving motor 122. Moreover, the ink supply assembly 130 may include a mounting bracket 132 connected to the lead screw-nut transmission structure 124, an ink supply container 134 disposed on the mounting bracket 132, and an ink extrusion assembly 136 disposed on the ink supply container 134.

[0043] The ink automatic adding device 100 can be installed on the printing press 1 through the frame, and the ink extrusion component 136 of the ink supply component 130 can extrude the ink stored in the ink supply container 134, so that the ink can be automatically added and supplied when the printing press performs ink printing on the circuit board; moreover, the driving motor 122 of the driving component 120 can drive the lead screw-nut transmission structure 124 to work, so that the lead screw-nut transmission structure 124 drives the ink supply component 130 to move linearly and reciprocally, and the ink can be added and supplied to different printing positions.

[0044] During the process of ink printing on the circuit board, the ink is automatically added and supplied through the ink automatic adding device 100, which is not affected by the experience of the operator. The ink output volume and output speed can be controlled through the ink extrusion component 136 according to the printing requirements, and the ink output position can be adjusted through the driving motor 122 of the driving component 120 and the lead screw-nut transmission structure 124, ensuring the accuracy of ink addition and making the printing quality stable and reliable. Moreover, the efficiency of automatic ink addition is relatively high. In addition, by controlling the ink output volume and output speed through the ink extrusion component 136, it is not affected by changes in factors such as environmental temperature and ink viscosity, ensuring the stability of ink addition and making the printing quality stable and reliable. Moreover, by replacing or cleaning the ink supply container 134 and filling different inks in different ink supply containers 134, different printing requirements can be met without regular maintenance and adjustment of the device system, nor the need to replace the pipeline, which can reduce the operating cost of the equipment. Only the ink supply container can be replaced, and rapid ink replacement can be achieved in production, improving production efficiency.

[0045] Furthermore, the frame may include a plurality of frame seats 112 and a frame mounting plate 114 provided on the plurality of frame seats 112. Through the plurality of frame seats 112, the ink automatic adding device 100 can be installed and fixed on other structures from multiple positions, which is stable and reliable. Moreover, through the frame mounting plate 114 provided on the plurality of frame seats 112, the driving component 120 and the ink supply component 130 can be installed. In this embodiment, the frame may include two frame seats 112, and the frame mounting plate 114 can be installed between the two frame seats 112. The frame mounting plate 114 can be set as a long strip plate, which is convenient for installing the driving motor 122 of the driving component 120 and the lead screw-nut transmission structure 124.

[0046] In addition, the driving motor 122 of the driving component 120 can be set as a stepping motor located at one end of the frame mounting plate 114, and the lead screw-nut transmission structure 124 can be arranged along the length direction of the frame mounting plate 114. By driving the lead screw-nut transmission structure 124 and the ink supply component 130 through the stepping motor, the movement of the ink supply component 130 is more accurate, so that the ink supply of the ink supply component 130 is also more accurate.

[0047] Moreover, the lead screw nut transmission structure 124 may include a driving lead screw 1242 rotatably arranged along the length direction of the frame mounting plate 114, and a transmission nut 1244 threadedly connected to the driving lead screw 1242. The driving lead screw 1242 is connected to the driving motor 122, and the mounting bracket 132 is connected to the transmission nut 1244. That is, a rotating support can be provided on the frame mounting plate 114, and the driving lead screw 1242 can be rotatably installed on the rotating support. By driving the driving lead screw 1242 through the driving motor 122, the transmission nut 1244 can be made to linearly move along the driving lead screw 1242, so that structures such as the ink supply container 134 connected to the transmission nut 1244 through the mounting bracket 132 move together. In addition, the lead screw nut transmission structure 124 can also be replaced by other linear transmission structures, such as a gear rack transmission structure.

[0048] Moreover, a sliding guide rail 116 can be extendably provided in the length direction of the frame mounting plate 114, and the mounting bracket 132 can be slidably clamped on the sliding guide rail 116. That is, a sliding guide rail 116 parallel to the driving lead screw 1242 can be provided on the frame mounting plate 114 to limit and guide the mounting bracket 132, so that the mounting bracket 132 and the ink supply assembly 130 thereon move more stably and reliably. In addition, according to needs, one or more sliding guide rails 116 can be provided.

[0049] In addition, the driving assembly 120 may further include a limit sensor 126 provided at each of the two ends of the frame mounting plate 114, and the two limit sensors 126 respectively correspond to the two moving limit positions of the transmission nut 1244. By providing a limit sensor 126 at each of the two ends of the frame mounting plate 114, when the transmission nut 1244 moves to the corresponding limit sensor 126 under the drive of the driving lead screw 1242, it stops moving, so that two corresponding moving limit positions are formed at the two ends of the frame mounting plate 114, and the transmission nut 1244 and the mounting bracket 132 can only move between the two moving limit positions, so that the ink supply assembly 130 moves between the two moving limit positions to supply ink.

[0050] In addition, the ink extrusion assembly 136 may include a pressing piston 1362 movably disposed in the ink supply container 134, and a gas driving mechanism 1364 communicating with the ink supply container 134. The gas driving mechanism 1364 is configured to drive the pressing piston 1362 to move in the ink supply container 134 to extrude the ink in the ink supply container 134. That is, the ink supply container 134 and the ink extrusion assembly 136 can form a structure similar to the cylinder driving structure. By adjusting the amount of gas entering the ink supply container 134 through the gas driving mechanism 1364, pressure is applied to the pressing piston 1362 in the ink supply container 134, so that the pressing piston 1362 extrudes the ink in the ink supply container 134 and discharges it, realizing the addition and supply of ink during the printing process.

[0051] Moreover, the ink supply container 134 may include an ink supply cylinder 1342 disposed on the mounting bracket 132, and an ink supply needle 1344 protruding from the bottom end of the ink supply cylinder 1342. Moreover, the pressing piston 1362 may be movably disposed on the top side of the ink supply cylinder 1342. The gas driving mechanism 1364 may include a gas supply source, an air supply pipeline connecting the gas supply source and the top of the ink supply cylinder 1342, and a gas regulating valve disposed on the air supply pipeline. Gas can be supplied to the ink supply cylinder 1342 through the gas supply source to apply pressure to the pressing piston 1362. Moreover, by means of the gas regulating valve provided on the air supply pipeline, the amount of gas and the gas supply speed delivered to the ink supply cylinder 1342 can be adjusted, so that the ink in the ink supply cylinder 1342 can be pressured by the pressing piston 1362, thereby controlling the ink amount and the ink discharge speed of the ink discharged from the ink supply needle 1344.

[0052] Further, the ink supply cylinder 1342 may include a cylinder body detachably disposed on the mounting bracket 132, and a cylinder cover disposed at the open end of the top of the cylinder body. The ink supply needle 1344 protrudes from the bottom end of the cylinder body. The piston portion of the pressing piston 1362 is movably clamped in the inner cavity of the cylinder body, while the rod portion of the pressing piston 1362 extends out of the cylinder cover. The air supply pipeline of the gas driving mechanism 1364 communicates with the inner cavity (i.e., the piston cavity) at the top of the cylinder body, and gas can be injected into the piston cavity to apply pressure to the pressing piston 1362, so that the pressing piston 1362 pushes the ink in the ink cavity of the cylinder body of the ink supply cylinder 1342 to be discharged from the ink supply needle 1344. Moreover, the cylinder cover can be detachably connected to the cylinder body (such as by screw connection), which is convenient for opening the ink supply cylinder 1342 for cleaning, ink filling, and ink replacement.

[0053] Moreover, the ink extrusion assembly 136 may include an ink baffle 1366 disposed on the mounting bracket 132. The ink baffle 1366 may protrude outside the bottom end of the ink supply cylinder 1342, and the ink baffle 1366 may be disposed on the bottom side or the circumferential side of the ink supply needle 1344. By providing the ink baffle 1366 on the side of the ink supply needle 1344, ink overflow and contamination can be prevented when adding and supplying ink through the ink supply needle 1344. Moreover, the ink baffle 1366 may be provided as an arc-shaped plate and surround the lower part of the ink supply needle 1344 in a semi-surrounding form. In addition, the ink baffle 1366 may also be provided as a cylindrical plate and surround the circumferential side of the ink supply needle 1344.

[0054] In addition, the ink extrusion assembly 136 may further include an ink sensor 1368 disposed at the bottom end of the ink supply cylinder 1342. The ink amount in the ink supply cylinder 1342 can be detected and sensed by the ink sensor 1368, and whether the ink in the ink supply cylinder 1342 is used up can be detected, which is convenient for reminding the operator to supplement or replace the ink. Moreover, the ink sensor 1368 may include an ink detection main body disposed on the mounting bracket 132 and an ink detection probe connected to the ink detection main body. The ink detection probe can extend into the bottom of the ink cavity inside the ink supply cylinder 1342.

[0055] In addition, the mounting bracket 132 may include a mounting connection frame 1322 connected to the driving nut 1244 of the screw nut transmission structure 124, and a mounting fixing frame 1324 connected to the mounting connection frame 1322. The ink supply cylinder 1342 may be installed on the mounting fixing frame 1324. The mounting connection frame 1322 is also slidably connected to the sliding guide rail 116 on the frame mounting plate 114, and the mounting fixing frame 1324 may be detachably connected to the mounting connection frame 1322, which is convenient for installing and disassembling the mounting fixing frame 1324 and the ink supply cylinder 1342, so as to facilitate ink filling and replacement of the ink supply cylinder 1342, or cleaning and maintenance of the ink supply cylinder 1342.

[0056] Furthermore, the mounting fixing frame 1324 may include a cylinder body fixing frame that is limited to the circumferential side of the cylinder body of the ink supply cylinder 1342, and a cylinder bottom fixing frame connected to the cylinder body fixing frame. The bottom end of the ink supply cylinder 1342 abuts against the cylinder bottom fixing frame, and the ink supply needle 1344 protrudes outside the cylinder bottom fixing frame. The cylinder body fixing frame is connected to the mounting connection frame 1322. The cylinder body fixing frame may include two detachably connected arc-shaped fixing frames that can surround the circumferential side of the top of the cylinder body of the ink supply cylinder 1342; the cylinder bottom fixing frame may include a fixing frame side plate connected to the arc-shaped fixing frame and a fixing frame bottom plate bent at the end of the fixing frame side plate. The fixing frame side plate may be limited to the side of the cylinder body of the ink supply cylinder 1342, and the fixing frame bottom plate may be limited to the bottom end of the ink supply cylinder 1342. The ink supply needle 1344 may pass through the limiting hole on the fixing frame bottom plate and protrude outside the fixing frame bottom plate.

[0057] In addition, asFigures 4 to 5 As shown in the figure, the present utility model further provides a printing head 10, which includes a head frame 200, a printing blade mechanism 300 provided on the head frame 200, and the automatic ink adding device 100 as described above. Moreover, the printing blade mechanism 300 includes a first blade assembly 310 and a second blade assembly 320 respectively provided on both sides of the head frame 200, and the ink supply container 134 of the automatic ink adding device 100 is inclined towards the first blade assembly 310 or the second blade assembly 320. Through the printing blade mechanism 300 formed by the first blade assembly 310 and the second blade assembly 320, the ink supplied by the automatic ink adding device 100 is scraped during the process of printing the printed circuit board, making the ink distribution more uniform.

[0058] Moreover, the first blade assembly 310 may include a first blade 312 arranged vertically, and a first lifting driving member 314 connected to the first blade 312. The first lifting driving member 314 is provided on one side surface of the head frame 200; the second blade assembly 320 may include a second blade 322 inclined towards the first blade 312, and a second lifting driving member 324 connected to the second blade 322. The second lifting driving member 324 is provided on the other side surface of the head frame 200, and the ink supply container 134 is inclined towards the first blade 312 and the second blade 322. The first lifting driving member 314 can drive the first blade 312 to move up and down, and the second lifting driving member 324 can drive the second blade 322 to move up and down. The second blade 322 and the first blade 312 cooperate with each other to scrape the ink added on the printed circuit board evenly, facilitating ink printing on the circuit board. Moreover, both the first lifting driving member 314 and the second lifting driving member 324 may include at least one lifting driving cylinder provided on the head frame 200, and the lifting driving cylinder is connected to the first blade 312 or the second blade 322.

[0059] In addition, as Figure 6 shown in the figure, the present utility model further provides a printing machine 1, which includes a printing main body 20, and the printing head 10 as described above provided on the printing main body 20. By providing the above-mentioned automatic ink adding device 100 in the printing head 10 of the printing machine 1, the stability and accuracy of ink addition during the printing process can be ensured by precisely controlling the ink addition amount and the number of additions, thereby improving the printing quality. Experimental data shows that in the process of manufacturing printed circuit boards using the printing machine with the automatic ink adding device 100, the ink viscosity is stably controlled.

[0060] Moreover, the automatic ink adding device 100 automatically adds ink, reducing the intervention of operators during the printing process and simplifying manual operations, thereby improving production efficiency. According to actual production tests, the ink changing time of the printing head 10 equipped with the automatic ink adding device 100 is shortened by 50%, greatly enhancing production efficiency.

[0061] Moreover, the automatic ink adding device 100 automatically adds ink. By precisely controlling the ink usage, ink waste is reduced, and raw material consumption is lowered. At the same time, the number of operators and the cost of equipment maintenance are reduced, thereby lowering the overall operating cost.

[0062] Moreover, the automatic ink adding device 100 is flexibly designed and can adapt to different types of printing heads 10 and different printing requirements. By adjusting the output pressure and gas output of the gas regulating valve, as well as the movement speed of the stepper motor, it can easily adapt to different printing conditions, improving the adaptability and flexibility of the equipment.

[0063] Moreover, by equipping the automatic ink adding device 100 with an ink sensor 1368 and an alarm system, when the ink is about to run out, the device can automatically give an alarm prompt, avoiding printing interruptions caused by insufficient ink. In addition, the design of the automatic ink adding device 100 prevents direct contact between the operator and the ink, reducing the working risk of the operator.

[0064] It should be noted that in the present utility model, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0065] The above are only specific embodiments of the present utility model, enabling those skilled in the art to understand or implement the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic ink adding device, characterized in that, Comprising: Frame; Drive assembly, including a drive motor provided on the frame and a lead screw-nut drive structure connected to the drive motor; And, Ink supply assembly, including a mounting bracket connected to the lead screw-nut drive structure, an ink supply container provided on the mounting bracket, and an ink extrusion assembly provided on the ink supply container.

2. The automatic ink adding device according to claim 1, wherein The ink extrusion assembly includes a pressing piston movably provided in the ink supply container and a gas drive mechanism communicating with the ink supply container, and the gas drive mechanism is used to drive the pressing piston to move in the ink supply container to extrude the ink in the ink supply container.

3. The ink automatic addition device according to claim 2, characterized in that, The ink supply container includes an ink supply cylinder provided on the mounting bracket and an ink supply needle protruding from the bottom end of the ink supply cylinder, and the pressing piston is movably provided on the top side of the ink supply cylinder; The gas drive mechanism includes a gas supply source, a gas supply pipeline connecting the gas supply source and the top of the ink supply cylinder, and a gas regulating valve provided on the gas supply pipeline.

4. The automatic ink adding device according to claim 3, characterized in that The ink extrusion assembly includes an ink baffle provided on the mounting bracket, the ink baffle protruding outside the bottom end of the ink supply cylinder, and the ink baffle blocking the bottom side or the circumferential side of the ink supply needle.

5. The automatic ink adding device according to claim 3, wherein, The ink extrusion assembly includes an ink sensor provided at the bottom end of the ink supply cylinder.

6. The automatic ink adding device according to claim 3, wherein, The mounting bracket includes a mounting connection frame connected to the lead screw-nut drive structure and a mounting fixing frame connected to the mounting connection frame; The mounting fixing frame includes a cylinder body fixing frame limiting to the circumferential side of the cylinder body of the ink supply cylinder and a cylinder bottom fixing frame connected to the cylinder body fixing frame. The bottom end of the ink supply cylinder abuts on the cylinder bottom fixing frame, the ink supply needle protrudes outside the cylinder bottom fixing frame, and the cylinder body fixing frame is connected to the mounting connection frame.

7. The automatic ink adding device according to any one of claims 1 to 6, characterized in that, The frame includes a plurality of frame seats and a frame mounting plate provided on the plurality of frame seats; The drive motor is a stepping motor located at one end of the frame mounting plate, and the lead screw-nut drive structure is provided on the frame mounting plate.

8. The automatic ink adding device according to claim 7, characterized in that, The lead screw-nut drive structure includes a drive lead screw rotatably provided along the length direction of the frame mounting plate and a transmission nut threadedly connected to the drive lead screw. The drive lead screw is connected to the drive motor, and the mounting bracket is connected to the transmission nut; A sliding guide rail is provided extending in the length direction of the frame mounting plate, and the mounting bracket is slidably clamped on the sliding guide rail.

9. The automatic ink adding device according to claim 8, characterized in that, The drive assembly includes one limit sensor provided at each of the two ends of the frame mounting plate, and the two limit sensors respectively correspond to the two moving limit positions of the transmission nut.

10. A printing head, characterized in that, Comprising: Head frame; Printing squeegee mechanism, including a first squeegee assembly and a second squeegee assembly respectively provided on both sides of the head frame; and, The automatic ink adding device according to any one of claims 1-9, provided on the head frame, and the ink supply container of the automatic ink adding device is inclined towards the first squeegee assembly or the second squeegee assembly.

11. The printing head according to claim 10, characterized in that, The first scraper assembly includes a first scraper disposed vertically, and a first lifting drive member connected to the first scraper, and the first lifting drive member is disposed on one side surface of the machine head frame; The second scraper assembly includes a second scraper inclined towards the first scraper, and a second lifting drive member connected to the second scraper, and the second lifting drive member is disposed on the other side surface of the machine head frame, and the ink supply container is inclined towards the first scraper and the second scraper.

12. A printing press, characterized in that, It includes a printing main body, and a printing head as described in claim 10 or 11 disposed on the printing main body.

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