An ink dotting machine

Abstract

An ink-dispensing machine includes a machine base, on which are mounted a fixture assembly for placing a workpiece to be processed and an ink-dispensing assembly for dispensing ink onto the workpiece positioned on the fixture assembly. The machine base also includes a cleaning assembly for cleaning the inkjet head, positioned along the travel path of the inkjet head. The cleaning assembly includes a frame, a cleaning table on the frame, and a feeding unit. The feeding unit includes a feed roller and a take-up roller respectively positioned on both sides of the cleaning table, with a cleaning belt wound around the feed roller and take-up roller, and the cleaning belt being pulled across the surface of the cleaning table. This technical solution enables timely and convenient cleaning of the inkjet head, reducing reliance on manual labor, thereby lowering production costs and improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of ink dispensing equipment technology, specifically to an ink dispensing machine. Background Technology

[0002] In the production of electronic components, it is often necessary to print patterns or provide protective coatings using ink droplets. Currently, ink droplets are applied to the workpiece placed on a fixture using an inkjet printer. However, during long-term ink droplet processing, the nozzles of the inkjet head can easily become clogged. If not cleaned in time, this will seriously affect the efficiency of the ink droplet operation.

[0003] Typically, the inkjet head is cleaned manually when the machine is stopped to prevent nozzle clogging. However, if cleaning is not done in a timely manner, nozzle clogging can also easily occur. Moreover, this cleaning must be done while the machine is stopped, which greatly affects the efficiency of the operation.

[0004] Therefore, a new technical solution is urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide an ink dispensing machine to solve the above-mentioned technical problems. The technical solution adopted by this utility model is as follows:

[0006] An ink dotting machine includes a machine base, on which a fixture assembly for placing a workpiece to be processed and an ink dotting assembly for dotting ink on the workpiece to be processed, which is positioned on the fixture assembly, are arranged. The ink dotting assembly includes a drive unit that drives in a horizontal and vertical direction and an inkjet head that is disposed on the drive unit and reciprocates in the horizontal and vertical directions.

[0007] The machine tool is also equipped with a cleaning assembly for cleaning the inkjet head. The cleaning assembly is positioned along the travel path of the inkjet head and includes [missing information - likely related to cleaning components].

[0008] A frame, on which a cleaning table is mounted, and also includes...

[0009] The feeding unit includes a feeding roller and a receiving roller respectively disposed on both sides of the cleaning table, and a cleaning belt is wound on the feeding roller and the receiving roller, and the cleaning belt is pulled across the table surface of the cleaning table.

[0010] Furthermore, the cleaning assembly also includes a mounting plate, which is fixedly mounted on the end of the frame. The cleaning table is fixedly mounted on one side of the mounting plate, and the feeding roller and the receiving roller are rotatably mounted on one side of the mounting plate. A drive device that is connected to the receiving roller is fixedly mounted on the mounting plate.

[0011] Furthermore, a damper is also provided on the mounting plate and is connected to the feeding roller drive to dissipate the rotational energy of the feeding roller.

[0012] Furthermore, the cleaning assembly also includes a tension roller group, which is at least located on one side of the cleaning table. The tension roller group includes a plurality of rollers that are rotatably connected to the mounting plate by which the cleaning belt passes. The horizontal plane of the axis of the roller group adjacent to the cleaning table is located below the horizontal plane of the cleaning table surface.

[0013] Furthermore, a length detection unit is provided on the cleaning assembly to detect the length of the cleaning belt being pulled forward. The length detection unit includes a detection roller rotatably connected to the mounting plate. The two ends of the detection roller are located on both sides of the mounting plate and respectively form a contact end and a detection end. The cleaning belt passes around the contact end and rubs against the detection roller to rotate. A detection component adapted to the detection end is provided on the mounting plate to calculate the number of rotations of the detection end.

[0014] Furthermore, the detection component is a photoelectric sensor with a radiating end and a receiving end. Detection plates are fixedly mounted on the detection end at equal angles, and all the detection plates pass sequentially between the radiating end and the receiving end under the drive of the detection roller.

[0015] Furthermore, a plurality of friction grooves are provided on the circumferential surface of the contact end, arranged in a circumferential direction, and the length of the friction grooves extends along the axial direction of the contact end.

[0016] Furthermore, a negative pressure structure is provided on the surface of the cleaning station where the cleaning belt contacts each other, so as to adsorb the cleaning belt onto the surface of the cleaning station.

[0017] Furthermore, the negative pressure structure includes:

[0018] The cleaning station has an internal cavity that is connected to an external air source via a pipe. The cleaning station has a number of air intake holes arranged in a matrix and connected to the cavity on its surface.

[0019] Furthermore, the mounting plate is also provided with a cleaning chamber for holding cleaning fluid.

[0020] The beneficial effects of this utility model are as follows:

[0021] In this embodiment, an ink-dispensing machine is provided to dispense ink onto a workpiece, facilitating subsequent processing. The solution also includes a cleaning component that automatically cleans the inkjet head periodically, preventing nozzle clogging. Furthermore, the inkjet head cleaning is performed during equipment operation, eliminating the need for downtime. This solution enables timely and convenient inkjet head cleaning, reducing reliance on manual labor, thereby lowering production costs and increasing efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of this utility model after the cover is removed.

[0024] Figure 3 This is a schematic diagram of the structure of the dot ink assembly of this utility model.

[0025] Figure 4 This is a schematic diagram of the cleaning component in this utility model. Figure 1 .

[0026] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0027] Figure 6 This is a schematic diagram of the cleaning component of this utility model after removing part of the side plate.

[0028] Figure 7 for Figure 6 A magnified view of a section at point B.

[0029] In the diagram: 100 - machine base; 110 - fixture assembly; 200 - ink dot assembly; 210 - drive unit; 220 - inkjet head; 300 - cleaning assembly; 301 - frame; 310 - cleaning table; 320 - feeding unit; 321 - unloading roller; 322 - receiving roller; 323 - cleaning belt; 302 - mounting plate; 324 - drive unit; 325 - damper; 326 - roller body; 327 - length detection unit; 3271 - detection roller; 3272 - contact end; 3273 - detection end; 3274 - detection component; 3275 - detection plate; 3276 - friction groove; 312 - suction hole; 303 - cleaning chamber. Detailed Implementation

[0030] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0031] In this embodiment, an ink dotting machine is provided to apply ink to a workpiece, facilitating subsequent processing. The solution also includes a cleaning component 300, which automatically cleans the inkjet head 220 periodically to prevent nozzle clogging. Furthermore, the cleaning is performed during operation, eliminating the need for machine downtime. This solution allows for timely and convenient cleaning of the inkjet head 220, reducing reliance on manual labor, thereby lowering production costs and increasing efficiency.

[0032] like Figure 1-7 As shown, in this embodiment, an ink dotting machine is provided, including a machine base 100. A fixture assembly 110 for placing a workpiece to be processed and an ink dotting assembly 200 for dotting ink onto the workpiece positioned on the fixture assembly 110 are disposed on the machine base 100. The ink dotting assembly 200 includes a drive unit 210 that drives in the horizontal and vertical directions, and an inkjet head 220 disposed on the drive unit 210 and reciprocating in the horizontal and vertical directions. The machine base 100 is also equipped with... A cleaning assembly 300 for cleaning the inkjet head 220 is provided. The cleaning assembly 300 is set on the travel path of the inkjet head 220 and includes a frame 301. A cleaning table 310 is set on the frame 301. The assembly also includes a feeding unit 320. The feeding unit 320 includes a feeding roller 321 and a receiving roller 322 respectively set on both sides of the cleaning table 310. A cleaning belt 323 is wound on the feeding roller 321 and the receiving roller 322 and is pulled across the table surface of the cleaning table 310.

[0033] In this technical solution, the drive unit 210 comprises two mutually assembled linear modules. The first linear module is arranged horizontally, and the second linear module is arranged vertically and assembled on top of the first linear module. The inkjet head 220 is assembled on the second linear module, enabling it to move horizontally and vertically under the drive of the two linear modules. Simultaneously, the fixture assembly 110 is located below the drive unit 210, and it also comprises a third linear module and a fixture disk mounted on the linear module. The movement direction of the third linear module is perpendicular to the movement direction of the first linear module, thus enabling the three linear modules to form a device that moves along the X, Y, and Z axes, thereby allowing for more precise ink application to the workpiece on the fixture disk. In this technical solution, the inkjet head used to apply ink to the workpiece can be implemented using existing technologies, as long as the effect of ink application is achieved; no specific limitations are imposed in this technical solution.

[0034] During the process of applying ink to the workpiece, the nozzle of the inkjet head 220 is prone to accumulating a lot of contaminants due to prolonged operation, which can easily cause blockage in severe cases. During the ink application process, the drive unit 210 moves the inkjet head 220 toward the cleaning assembly 300, so that the nozzle is wiped on the cleaning assembly 300 to clean the nozzle and prevent blockage. Specifically, the cleaning belt 323 is wound around the take-up roller 322 and the feed roller 321 and stacked on the table surface of the cleaning table 310. After the inkjet head 220 moves to the corresponding position of the cleaning table 310 under the drive of the drive unit 210, the nozzle comes into contact with the cleaning belt 323. Under the drive of the first linear module, the nozzle moves back and forth along the surface of the cleaning belt 323 to wipe the nozzle and remove contaminants located at the nozzle position, thereby preventing nozzle blockage. At the same time, during the rotation of the take-up roller 322, the cleaning belt 323 can be pulled to move on the table surface of the cleaning table 310, thereby winding the cleaning belt 323 that has wiped the nozzle onto the take-up roller 322, ensuring that the cleaning belt 323 on the table surface of the cleaning table 310 is clean and ensuring that the nozzle is thoroughly wiped.

[0035] In this technical solution, to provide more installation positions and make the component installation more reasonable, the cleaning assembly 300 further includes a mounting plate 302 in this embodiment. The mounting plate 302 is fixedly mounted on the end of the frame 301. The cleaning table 310 is fixedly mounted on one side of the mounting plate 302, and the feeding roller 321 and the receiving roller 322 are rotatably mounted on one side of the mounting plate 302. A drive device 324 that is driven and connected to the receiving roller 322 is fixedly mounted on the mounting plate 302. The drive device 324 is a conventional motor, which is fixedly mounted on the mounting plate 302 and driven and connected to the receiving roller 322, thereby driving the receiving roller 322 to rotate. This allows the cleaning belt 323 to move on the table surface of the cleaning table 310, so that the cleaning belt 323 that has been wiped and cleaned on the inkjet head 220 is wrapped around the receiving roller 322. At the same time, the cleaning belt 323 that has not been wiped and cleaned can be pulled onto the cleaning table 310.

[0036] Meanwhile, to prevent the feed roller 321 from excessively rotating due to inertia during the process of the drive device 324 driving the take-up roller 322 to rotate and thus pulling the cleaning belt 323, thereby causing the cleaning belt 323 to fall off the feed roller 321 and become loose, thus affecting the cleaning of the inkjet head 220, in this technical solution, as follows: Figure 6 As shown, a damper 325, which is connected to the feed roller 321, is also provided on the mounting plate 302 to dissipate the rotational energy of the feed roller 321. The damper 325 dissipates the rotational energy of the feed tube, thereby keeping the cleaning belt 323 taut to ensure the wiping and cleaning effect on the inkjet head 220.

[0037] In this technical solution, such as Figure 4-5As shown, to further improve the tension of the cleaning belt 323, in this embodiment, the cleaning assembly 300 also includes a tension roller group. The tension roller group is at least disposed on one side of the cleaning table 310, and includes a plurality of rollers 326 that allow the cleaning belt 323 to pass around and rotatably connect to the mounting plate 302. The horizontal plane of the axis of the roller group adjacent to the cleaning table 310 is located below the horizontal plane of the table surface of the cleaning table 310. By providing the tension roller group, the cleaning belt 323 located between the feed roller 321 and the take-up roller 322 can be kept in a taut state, thereby ensuring that the portion stacked on the table surface of the cleaning table 310 is taut, and the wiping and cleaning work can be completed smoothly during the wiping of the inkjet head 220. Furthermore, by setting the axis of one roller 326 of the adjacent cleaning table 310 to be lower than the surface of the cleaning table 310, the cleaning belt 323, after passing under the roller 326 and being stacked on the table surface of the cleaning table 310, can ensure that this portion of the cleaning belt 323 is tightly adhered to the table surface. This allows it to maintain a tight fit with the inkjet head 220 during the wiping and cleaning process, improving the cleaning effect. Similarly, the axis of the take-up roller 322 is also lower than the table surface of the cleaning table 310, so that the portion of the cleaning belt 323 between the cleaning table 310 and the take-up roller 322 is inclined, ensuring that the portion of the cleaning belt 323 on the table surface of the cleaning table 310 remains overlapping with the table surface.

[0038] In this embodiment, in order to detect the length of the cleaning belt 323 pulled and wound around the take-up roller 322, and to avoid the cleaning belt 323 being pulled out of the cleaning table 310 surface by too much, thus causing waste of the cleaning belt 323, such as... Figure 6-7 In a further improved technical solution, a length detection unit 327 is also provided on the cleaning assembly 300 to detect the length of the cleaning belt 323 being pulled along. The length detection unit 327 includes a detection roller 3271 rotatably connected to the mounting plate 302. The two ends of the detection roller 3271 are located on both sides of the mounting plate 302, and respectively form a contact end 3272 and a detection end 3273. The cleaning belt 323 passes around the contact end 3272 and rubs to drive the detection roller 3271 to rotate. A detection component 3274 adapted to the detection end 3273 is provided on the mounting plate 302 to calculate the number of rotations of the detection end 3273.

[0039] The detection component 3274 is a photoelectric sensor with a radiating end and a receiving end. Detection plates 3275 are fixedly installed on the detection end 3273 and are spaced apart at equal angles. All detection plates 3275 pass sequentially between the radiating end and the receiving end under the drive of the detection roller 3271.

[0040] After one or more cleaning and wiping operations on the inkjet head 220, the cleaning belt 323 on the cleaning table 310 retains a significant amount of oil, making it insufficient to thoroughly clean the inkjet head 220. At this point, the drive unit 324 drives the take-up roller 322 to rotate, pulling the oil-stained cleaning belt 323 off the cleaning table 310 and onto the clean cleaning belt 310. During this process, the detection roller 3271 rotates along with the cleaning belt 323 due to friction. Simultaneously, the detection strip 3275 intermittently passes through the light spot sensor, which detects the movement of the detection strip... The number of passes of 3275 is transmitted to the controller. The controller, in conjunction with the diameter of the detection roller 3271, determines the length of the cleaning belt 323 that can be pulled. It should be noted that the length of the cleaning belt 323 pulled will definitely have an error compared to the actual size. In the actual cleaning process, the pulling length of the cleaning belt 323 is acceptable as long as it is within an acceptable range. A certain degree of error is allowed. The acceptable range is such that there is no obvious waste. For example, if the pulled length is less than twice the length of the cleaning table 310, it is within the acceptable range. Within this range, the cleaning belt 323 does not cause obvious waste.

[0041] In this technical solution, in order to further improve the friction between the contact end 3272 and the cleaning belt 323, such as... Figure 7 As shown, a plurality of friction grooves 3276 are arranged in a circumferential direction on the circumferential surface of the contact end 3272, and the length of the friction grooves 3276 extends along the axial direction of the contact end 3272. The friction grooves 3276 increase the friction between the contact end 3272 and the cleaning belt 323, thereby improving the accuracy of the detection roller 3271 rotating with the cleaning belt 323.

[0042] In this technical solution, in order to ensure that the cleaning strip 323 in contact with the surface of the cleaning station 310 remains reliably attached, a negative pressure structure is provided on the surface of the cleaning station 310 and the cleaning strip 323 in contact with each other, so as to adsorb the cleaning strip 323 onto the surface of the cleaning station 310.

[0043] like Figure 4-5As shown, the negative pressure structure includes a cavity set inside the cleaning table 310, and the cavity is connected to an external air source through a pipe. Several suction holes 312 arranged in a matrix and connected to the cavity are formed on the table surface of the cleaning table 310.

[0044] In this technical solution, the air source is configured as a vacuum pump, which can draw a vacuum into the cavity, thereby creating a negative pressure inside the cavity. Under the action of the suction hole 312, the cleaning tape 323 can be adsorbed onto the surface of the cleaning table 310, preventing the cleaning tape 323 from moving during the wiping of the inkjet head 220 and affecting the wiping and cleaning effect.

[0045] In order to further clean the inkjet head 220, a cleaning chamber 303 for holding cleaning fluid is also provided on the mounting plate 302. Before or after wiping, the nozzle is immersed in the cleaning chamber 303, and the inkjet head 220 is soaked and cleaned by the cleaning fluid.

[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. An ink dotting machine, comprising a machine base, wherein a fixture assembly for placing a workpiece to be processed and an ink dotting assembly for dotting ink onto the workpiece positioned on the fixture assembly are disposed on the machine base, characterized in that, The dot ink assembly includes a drive unit that drives in the horizontal and vertical directions, and an inkjet head that is disposed on the drive unit and reciprocates in the horizontal and vertical directions. The machine tool is also equipped with a cleaning assembly for cleaning the inkjet head. The cleaning assembly is positioned along the travel path of the inkjet head and includes [missing information - likely related to cleaning components]. The frame, on which a cleaning table is mounted, also includes... The feeding unit includes a feeding roller and a receiving roller respectively disposed on both sides of the cleaning table, and a cleaning belt is wound on the feeding roller and the receiving roller, and the cleaning belt is pulled across the table surface of the cleaning table.

2. The ink dispensing machine according to claim 1, characterized in that, The cleaning assembly also includes a mounting plate, which is fixedly mounted on the end of the frame. The cleaning table is fixedly mounted on one side of the mounting plate, and the feeding roller and the receiving roller are rotatably mounted on one side of the mounting plate. A drive device that is connected to the receiving roller is fixedly mounted on the mounting plate.

3. The ink dispensing machine according to claim 2, characterized in that, A damper is also provided on the mounting plate and is connected to the feeding roller drive to consume the rotational energy of the feeding roller.

4. The ink dispensing machine according to claim 2, characterized in that, The cleaning assembly also includes a tension roller group, which is at least located on one side of the cleaning table. The tension roller group includes a plurality of rollers that are rotatably connected to the mounting plate by the cleaning belt, and the horizontal plane of the axis of the roller group adjacent to the cleaning table is located below the horizontal plane of the cleaning table surface.

5. The ink dispensing machine according to claim 4, characterized in that, A length detection unit is also provided on the cleaning assembly to detect the length of the cleaning belt being pulled. The length detection unit includes a detection roller rotatably connected to the mounting plate. The two ends of the detection roller are located on both sides of the mounting plate and respectively form a contact end and a detection end. The cleaning belt passes around the contact end and rubs against the detection roller to rotate. A detection component adapted to the detection end is provided on the mounting plate to calculate the number of rotations of the detection end.

6. The ink dispensing machine according to claim 5, characterized in that, The detection component is a photoelectric sensor with a radiating end and a receiving end. Detection plates are fixedly mounted on the detection end and spaced apart at equal angles. All the detection plates pass sequentially between the radiating end and the receiving end under the drive of the detection roller.

7. The ink dispensing machine according to claim 5, characterized in that, The contact end has a plurality of friction grooves arranged in a circumferential direction on its circumferential surface, and the length of the friction grooves extends along the axial direction of the contact end.

8. The ink dispensing machine according to claim 1, characterized in that, A negative pressure structure is provided on the surface of the cleaning station where the cleaning belt comes into contact with each other, so as to adsorb the cleaning belt onto the surface of the cleaning station.

9. The ink dispensing machine according to claim 8, characterized in that, The negative pressure structure includes: The cleaning station has an internal cavity that is connected to an external air source via a pipe. The cleaning station has a number of air intake holes arranged in a matrix and connected to the cavity on its surface.

10. An ink dispensing machine according to claim 2, characterized in that, The mounting plate is also equipped with a cleaning chamber for holding cleaning fluid.

Images