TWI585933B - Method and apparatus for ink marking - Google Patents

Description

Ink stamping method and device

The present disclosure relates to a method and apparatus for ink stamping. More specifically, the present disclosure relates to a method and apparatus for automatically compensating and mixing ink thinner during ink stamping.

In the manufacturing process of the semiconductor device, stamping is usually performed on the surface of the encapsulant of the semiconductor device to facilitate identification of the semiconductor device. With the evolution of semiconductor processes, the size of semiconductor components has shrunk, so the stamping technology also faces many challenges. Especially in the large-scale and rapid manufacturing requirements of semiconductor components, accurate, clear and high-efficiency stamping technology has become a part of semiconductor component manufacturing.

One aspect of the disclosure relates to a method for ink stamping. In one embodiment, the method includes: stamping ink on a surface of a plurality of workpieces; receiving a first signal by a control module; and the control module Responding to the first signal to: suspend the stamping ink; adding a first amount of diluent to the ink; stirring the ink to uniformly mix the first amount of the diluent in the ink; Printing ink.

Another aspect of the disclosure relates to an apparatus for ink stamping. In one embodiment, the apparatus includes a control module, a processing mechanism, a capping mechanism, a diluent storage tank, and a diluent. Flow control device. The processing mechanism is configured to carry and transport a plurality of workpieces, and the processing mechanism is coupled to the control module and is controlled by the control module. The stamp head mechanism comprises an ink tray, an ink cartridge and a rubber head holder. The stamp head mechanism The control module is connected and controlled by the control module. The ink tray is for containing an ink, and the ink cartridge is used to drive out the ink. The glue head holder has a plurality of plastic heads for adhering the ink and printing the ink onto the workpieces on the processing mechanism. The diluent storage tank is used to store a diluent, and the diluent storage tank uses a line to add the diluent to the ink tray. The diluent flow control device is coupled to the control module and is controlled by the control module to control the amount of diluent added to the ink tray.

1‧‧‧Device for ink stamping

1a‧‧‧Devices for ink stamping

10‧‧‧Control Module

12‧‧‧Processing agencies

13‧‧‧Printing head mechanism

14‧‧‧Diluent storage tank

15‧‧‧Diluent flow control device

16‧‧‧pipe

17‧‧‧Test institutions

18‧‧‧Workpiece

19‧‧‧Ink

20‧‧‧Agitating structure

121‧‧‧Processing controller

131‧‧‧Ink tray

131a‧‧‧First District

131b‧‧‧Second District

132‧‧‧Inkjet rack

133‧‧‧Adhesive seat

134‧‧‧ scraper

135‧‧‧Stereo

135a‧‧‧Scratch pattern

136‧‧・Nozzle head

137‧‧‧ fixed seat

138‧‧‧ slope

139‧‧‧Print head controller

151‧‧‧Diluent flow controller

152‧‧‧ solenoid valve

1331‧‧‧ plastic head

1 shows a perspective view of a device for ink stamping in accordance with an embodiment of the present disclosure.

Figure 2 shows a system diagram of the apparatus for ink stamping of Figure 1.

Figure 3 shows a system diagram of another embodiment of the apparatus for ink stamping of the present disclosure.

Figure 4 shows an enlarged schematic view of the stamping head mechanism of Figure 1.

Figure 5 is a front elevational view of the apparatus for ink capping of Figure 1.

Figure 6 is a schematic view showing the operation of the apparatus for ink stamping of Figure 1.

FIG. 7 is a schematic view showing the operation of the apparatus for ink capping according to another embodiment of the present disclosure.

FIG. 8 is a flow chart showing a method of ink stamping according to an embodiment of the present disclosure.

1 shows a perspective view of an apparatus 1 for ink stamping in accordance with an embodiment of the present disclosure. Figure 2 shows a system diagram of the apparatus for ink stamping of Figure 1. The device 1 includes a control module 10, a processing mechanism (Handler) 12, a capping mechanism 13, a diluent storage tank 14, a diluent flow control device 15, a conduit 16 and a detecting mechanism 17. The control module 10 can be a single programmable logic controller (PLC), which sends a control signal to a thinner flow controller 151 located in the diluent flow control device 15, located at the stamp One of the head mechanisms 13 The print head controller 139 and one of the processing controllers 12 are located in the processing controller 121. The diluent flow controller 151, the stamp head controller 139, and the process controller 121 may be programmable logic controllers. Alternatively, the control module 10 can also be processed by the diluent flow controller 151 located in the diluent flow control device 15, the capping head controller 139 located in the capping mechanism 13, and the processing located in the processing mechanism 12. The controller 121 is composed of.

Figure 3 shows a system diagram of another embodiment of the apparatus 1a for ink stamping of the present disclosure. The apparatus 1a of the present embodiment is substantially the same as the apparatus 1 of Fig. 2, and the differences are as follows. In the device 1a of the embodiment, the control module 10 (FIG. 2) may be the processing controller 121 located in the processing mechanism 12 (ie, the processing controller 121 replaces the control module 10). A control signal is sent to the diluent flow controller 151 located in the diluent flow control device 15 and the stamp head controller 139 located in the head mechanism 13.

Referring to FIG. 1 and FIG. 2 again, the processing mechanism 12 is configured to carry and transport a plurality of workpieces 18 (eg, semiconductor package components), and the processing mechanism 12 is connected (eg, electrically connected) to the control module 10, and The control of the control module 10 is accepted. In one embodiment, the processing mechanism 12 includes a processing controller 121 for accepting control of the control module 10 to control the operation of the processing mechanism 12. Alternatively, the processing controller 121 itself is the control module 10 (as shown in FIG. 3). Alternatively, the process controller 121 is located outside of the processing mechanism 12, but still controls the operation of the processing mechanism 12.

The stamping head mechanism 13 is located above the processing mechanism 12 and includes an ink tray 131, an ink cartridge 132, a rubber head holder 133, a doctor blade 134 and a stereotype 135. The cap mechanism 13 is connected (eg, electrically connected) to the control module 10 (or the process controller 121) and is controlled by the control module 10 (or the process controller 121). In one embodiment, the stamp head mechanism 13 includes a stamp head controller 139 for accepting control of the control module 10 (or the processing controller 121) to control the operation of the stamp head mechanism 13. . Alternatively, the stamp head controller 139 is located outside the cap head mechanism 13, but still controls the The operation of the stamping head mechanism 13 is performed. The ink tray 131 is for accommodating an ink 19. The ink cartridge 132 is a fence type for ejecting and/or agitating the ink 19. The rubber head holder 133 has a plurality of plastic heads 1331 for adhering the ink 19 and printing the ink 19 to the workpieces 18 on the processing mechanism 12. One surface of the stencil 135 has a plurality of scribe patterns 135a for accommodating a portion of the ink 19. The blade 134 is a piece for scraping off the ink on the surface of the plate 135.

The diluent storage tank 14 is used to store a diluent, and the diluent storage tank 14 uses the line 16 to add the diluent to the ink tray 131. In this embodiment, the diluent storage tank 14 is in the form of a drop bottle and is located on a frame fixed to the processing mechanism 12. The line 16 is connected below the diluent storage tank 14. It can be understood that the diluent storage tank 14 can also be in the form of a receiving groove, which is located in the processing mechanism 12.

The diluent flow control device 15 is connected (eg, electrically connected) to the control module 10 (or the process controller 121) and receives control of the control module 10 (or the process controller 121) to control the dilution. The amount of agent added to the ink tray 131. In one embodiment, the diluent flow control device 15 includes a diluent flow controller 151 for accepting control of the control module 10 (or the process controller 121) to control the diluent flow control device 15 Acting. Alternatively, the diluent flow controller 151 is located outside of the diluent flow control device 15, but still controls the actuation of the diluent flow control device 15. In the present embodiment, the diluent flow control device 15 is located on a platform fixed to the processing mechanism 12. It will be appreciated that the diluent flow control device 15 can also be integrated into the processing mechanism 12 or the head mechanism 13. The diluent storage tank 14 is connected to the diluent flow control device 15 by the line 16.

In the present embodiment, the stamp head mechanism 13 further includes a stirring structure 20 for automatically stirring the ink 19 to uniformly mix the diluent in the ink 19. The stirring structure 20 is controlled by the capping head controller 139, and the type thereof is not limited, as long as the stirring can be performed. You can do your homework. In one embodiment, the agitating structure 20 includes a swinging mechanism and the ink refilling frame 132. The ink refrigerating frame 132 is coupled to the swinging mechanism, and the swinging mechanism is controlled by the capping head controller 139 to drive the hurry. The lower end of the ink frame 132 is stirred in the ink.

As shown in FIG. 1 and FIG. 2, the apparatus 1 further includes a nozzle head 136, which may be located in an area of the ink tray 131 for accommodating ink (for example, the second area 131b of FIG. 4) or adjacent thereto. The ink tray 131 is used to spray the diluent to the second region 131b of the ink tray 131. Preferably, the diluent is sprayed to the central portion of the second region 131b of the ink tray 131 for subsequent stirring. The ink is more uniform. In the present embodiment, the nozzle head 136 is fixed to the upper edge of the ink tray 131 by a fixing base 137. The line 16 is connected to the nozzle head 136 and the diluent flow control device 15, and the diluent is added to the ink tray 131 via the nozzle head 136, and the nozzle head 136 is controlled by the diluent flow control device 15. The amount of the diluent added to the ink tray 131 is controlled. In one embodiment, the diluent flow control device 15 controls the amount of diluent added to the ink tray 131 by a solenoid valve 152.

As shown in Figure 1, the apparatus 1 further includes a detection mechanism 17 that monitors the quality of the pattern of ink printed on the workpieces. In one embodiment, the detection mechanism 17 is an Auto Optical Inspection (AOI) system. In the present embodiment, the detecting mechanism 17 is located above the moving path of the workpiece 18 on the processing mechanism 12. However, it will be appreciated that the detection mechanism 17 may also be located outside of the processing mechanism 12.

Figure 4 shows an enlarged schematic view of the stamping head mechanism of Figure 1. The ink tray 131 includes a first area 131a and a second area 131b. The stencil 135 is located in the first region 131a of the ink tray 131, and one surface of the stencil 135 has the scribe pattern 135a. The ink tray 131 is for accommodating the ink 19, and the ink 19 is located in the second region 131b of the ink tray 131, and the diluent is added to the ink 19 in the second region 131b of the ink tray 131. The ink cartridge 132 is configured to eject and/or agitate the ink 19 located in the second region 131b of the ink tray 131 and Thinner. The second zone 131b has a slope 138 for abutting against the ink ejector 132 such that the ink ejector 132 can be passively moved up slightly, and the diluted ink 19 is driven to the first of the ink trays 131. The plate 135 of the area 131a. The doctor blade 134 is used to scrape the ink 19 of the surface of the template 135 such that the ink 19 is only located within the score pattern 135a.

Figure 5 is a front elevational view of the apparatus for ink capping of Figure 1. 4 and 5, the glue head holder 133 can be lowered such that the plastic heads 131 thereon adhere to the ink 19 located in the score pattern 135a of the stencil 135. After being adhered, the headstock 133 can be raised to exit the stencil 135 located on the ink tray 131. Further, as shown in FIG. 5, the nozzle head 136 is attached to the upper edge of the ink tray 131 and connected to the conduit 16.

Figure 6 is a schematic view showing the operation of the apparatus for ink stamping of Figure 1. In the present embodiment, the ink tray 131 can be moved left and right. First, the ink 19 is applied to the stencil 135. The steps are detailed as follows: the razor 134 is rotated 10 degrees counterclockwise, and then the ink tray 131 is moved from right to left to drive the rear of the razor 134. The ink cartridge 132 is now inflated along the slope 138 by the top against the slope 138 (Fig. 4), thereby contacting the upper surface of the template 135. As the ink tray 131 continues to move to the left, the ink cartridge 132 continues to apply the ink 19 in the second region 131b of the ink tank 131 from left to right in the first region 131a of the ink tray 131. The upper surface of the plate 135. Next, the blade 134 is rotated 10 degrees clockwise to re-press the plate 135 to complete the ink coating (the lower end of the blade 134 and the lower end of the ink container 132 are in contact with the rightmost side of the upper surface of the plate 135). Thereafter, the ink tray 131 is moved from left to right, and the doctor blade 134 and the ink ejector 132 simultaneously scrape the ink 19 on the upper surface of the template 135 to retain the ink in the score pattern 135a of the template 135.

Then, the rubber head holder 133 is lowered so that the plastic heads 1331 on the ink tray 131 are adhered to the ink tray 131 (that is, the ink in the notch pattern 135a of the template 135 is adhered), and adhered. The glue head holder 133 is then raised to leave the ink tray 131. Subsequently, the ink tray 131 is moved from right to left to make a clearance between the rubber head holder 133 and the workpiece 18, at which time the blade 134 is rotated 10 degrees counterclockwise. Next, the glue head holder 133 transfers the ink 19 down to the workpiece 18 again. Finally, the glue head holder 133 rises to the starting point.

It can be understood that, since the ink tray 131 can be moved to the left and right, the nozzle head 136 and the fixing seat 137 may not be disposed on the upper edge of the ink tray 131, but may be modified at other positions of the stamp head mechanism 13. .

FIG. 7 is a schematic view showing the operation of the apparatus for ink capping according to another embodiment of the present disclosure. The apparatus 1a of the present embodiment is substantially the same as the apparatus 1 shown in Figs. 1 to 6, and the differences are as follows. In the present embodiment, the ink tray 131 is immovable and is not located directly above the workpiece 18. In addition, the rubber head holder 133 can move up, down, left, and right, and the doctor blade 134 and the ink catcher frame 132 can also move left and right. First, the ink 19 is applied to the stencil 135. The steps are detailed as follows: the razor 134 is rotated 10 degrees counterclockwise, and then the razor 134 and the ink ejector 132 are moved from left to right. The ink ejector 132 will be passively moved up slightly along the slope 138 as a result of the abutment against the ramp 138 (Fig. 4), thereby contacting the upper surface of the stencil 135. As the doctor blade 134 and the ink ejector 132 continue to move to the right, the ink ejector 132 continues to apply the ink 19 in the second region 131b of the ink tank 131 from left to right to be placed on the ink tray 131. The upper surface of the slab 135 in the first zone 131a. Next, the blade 134 is rotated 10 degrees clockwise to re-press the plate 135 to complete the ink coating (the lower end of the blade 134 and the lower end of the ink container 132 are in contact with the rightmost side of the upper surface of the plate 135). Thereafter, the scraper 134 and the ink refilling frame 132 are moved from right to left, and the scraper 134 and the ink refilling frame 132 simultaneously scrape the ink 19 on the upper surface of the clinding plate 135, and the scoring pattern remaining on the clinding plate 135 The ink in 135a.

Then, the rubber head holder 133 is moved from right to left over the stereotype plate 135. Then, the rubber head holder 133 is lowered so that the plastic heads 1331 on the ink tray 131 are adhered to the ink tray 131 (that is, the ink in the notch pattern 135a of the template 135 is adhered), and adhered. After that The rubber head holder 133 rises to leave the ink tray 131. Subsequently, the glue head holder 133 is moved from left to right over the workpiece 18. Next, the glue head holder 133 transfers the ink 19 down to the workpiece 18 again. Finally, the glue head holder 133 rises to the starting point.

FIG. 8 is a flow chart showing a method of ink stamping according to an embodiment of the present disclosure. First, step 801 activates the processing controller 121 (or the control module 10 (FIG. 2)) to control automatic production of the ink stamping device 1 (step 802). The automatic production of the ink stamping device 1 is the action of the above-described stamping ink 19 on the surface of a plurality of workpieces 18. Next, step 803 is whether the processing controller 121 (or the control module 10) will receive a first signal; if not, return to step 802 for automatic production; if so, then stop (step 804) Perform automatic dilution of the ink. In this embodiment, the processing controller 121 (or the control module 10) receives the first signal when one of the following four conditions is met.

Condition (1): The production time of the ink stamping device 1 reaches a preset time. From the experimental results, it is known that the concentration of the ink 19 in the ink tray 131 increases the concentration flow rate time by one second every one hour after the evaporation of the diluent. Since the concentration of the ink 19 during the stamping process must be maintained at a concentration capable of achieving an optimum stamping quality, the ink stamping device 1 can be set to be produced for a predetermined period of time (for example: one hour, one and a half hours or Two hours) that a start condition is met and the automatic dilution operation is initiated. Therefore, the processing controller 121 (or the control module 10) receives a periodic timing signal (ie, the first signal), wherein one of the timing signals can be a certain period (eg, one hour) , one and a half hours or two hours). However, since the quality of the ink itself may decrease as the cumulative use time increases, in another embodiment, a gradual shortening of the chronograph period may be set, for example, a dilution operation is performed after the first two hours. Then, the dilution operation is performed once every hour; or the dilution operation is completed after the first two hours, then the dilution operation is performed after the expiration of one hour, and then every half hour. One dilution operation. The above timing period can be adjusted based on the type of ink used.

Condition (2): The number of productions of the ink stamping device 1 reaches a predetermined number. Since the quality of the ink gradually deteriorates with the number of stamped workpieces 18, each time the ink stamping device 1 cumulatively stamps the number of the workpieces 18 to a predetermined number (for example: 150 or 200 workpieces) can be set to meet a start condition and start the automatic dilution operation. At this time, the processing controller 121 (or the control module 10) receives a count signal (ie, the first signal).

Condition (3): The idle time of the ink stamping device 1 reaches a preset time. Since the ink is not volatilized even if the device 1 is idle, the thinner in the idle ink gradually volatilizes, resulting in an ink concentration that is too high, so that the ink stamping device 1 can be set to idle for a preset time. (For example: one hour, one and a half hours or two hours) that a start condition is met and the automatic dilution operation is initiated. At this time, the processing controller 121 (or the control module 10) receives a timing signal (ie, the first signal).

Condition (4): An ink concentration detector detects that the ink concentration is higher than a predetermined value. In one embodiment, an ink concentration detector can be added to monitor the ink concentration in real time. Regardless of whether the device 1 is performing ink stamping, if the ink concentration detector detects that the ink concentration is higher than a preset value, a start condition is satisfied and the automatic dilution operation is started. At this time, the processing controller 121 (or the control module 10) receives a concentration signal (ie, the first signal).

When the processing controller 121 (or the control module 10) receives the first signal under any of the conditions (1)-(4), the processing controller 121 (or the control module 10) The following operations are performed in response to the first signal. Step 804 is stopped, that is, the processing controller 121 (or the control module 10) controls the ink stamping device 1 to pause the printing of the ink. That is, the processing mechanism 12 and the stamp head mechanism 13 are stopped. Next, step 805 uses the diluent flow control device 15 to add a diluent to the second ink tray 131. The ink 19 in the region 131b. At this time, the dose of the added diluent is a first amount. From the experimental results, it was found that the addition of 10 ml of the diluent reduced the concentration flow time of the ink by 1 second, and therefore, in the present embodiment, the first amount was set to 10 ml. The diluent is added by the diluent flow control device 15 to add the diluent located in the diluent storage tank 14 to the ink 19 in the second zone 131b of the ink tray 131 via the line 16 and the nozzle head 136. Medium (Figure 4). The diluent flow control device 15 can have multiple sets of different parameters to adjust the first amount in response to different ink types. Next, step 806 informs the stamp head controller 139 to automatically agitate the ink using a stirring structure 20 to uniformly mix the first amount of the diluent in the ink. The agitating structure 20 is controlled by the capping head controller 139, and its type is not limited as long as a stirring operation can be performed. In this embodiment, the agitating structure 20 includes a swinging mechanism and the ink refilling frame 132. The ink refrigerating frame 132 is coupled to the swinging mechanism, and the swinging mechanism is controlled by the capping head controller 139 to drive the hurry. The lower end of the ink frame 132 is stirred in the ink. In addition to any of the conditions (1)-(3) above, in another embodiment, the first signal may be provided by the manual switch to the processing controller 121 (or the control module 10) to The above action of adding a diluent is performed.

Next, step 807 tests to stamp a dummy. Step 808 detects the quality of the dummy sheet and confirms the density of the ink by confirming the quality of the printed sheet. This detection step can be performed automatically by the detection mechanism 17 or manually. If the quality of the stamp is qualified, then return to step 802 for automatic production, i.e., stamping ink on the workpiece 18. If the quality of the dummy is unacceptable (the ink concentration is too high), a second signal is sent from the detecting mechanism 17 or the operator to the processing controller 121 (or the control module 10). The second signal can be automatically issued by the detection mechanism 17 or by an operator using a manual switch. The processing controller 121 (or the control module 10) performs the following operations in response to the second signal.

Returning to the shutdown step of step 804, that is, the processing controller 121 (or the The control module 10) controls the ink stamping device 1 to pause the printing of the ink. That is, the processing mechanism 12 and the stamp head mechanism 13 are stopped. Next, step 805 uses the diluent flow control device 15 to add diluent to the ink 19. At this time, the dose of the added diluent is a second amount. The second amount is the same as or different from the first amount. The diluent is added by the diluent flow control device 15 to add the diluent located in the diluent storage tank 14 to the ink 19 in the second zone 131b of the ink tray 131 via the line 16 and the nozzle head 136. Medium (Figure 4). Next, step 806 informs the stamp head controller 139 to automatically agitate the ink using the agitation structure 20 to uniformly mix the second amount of the diluent into the ink. Next, step 807 tests to stamp a dummy. Step 808 is to detect the quality of the dummy piece. If the quality of the dummy piece is stamped, the process returns to step 802 for automatic production.

The method and device for ink stamping of the present disclosure can ensure the concentration of the ink during the ink stamping process, thereby achieving the best stamping quality, since it can automatically compensate and mix the diluent. In addition, the compensation and mixing of the diluent can be completed by automation, that is, the problem that the conventional manual dilution operation takes too much time can be improved, and the method and apparatus for ink stamping of the present disclosure can save operation time. Improve production efficiency and reduce manpower configuration.

As used herein and without additional definitions, the terms "substantially", "substantially" and "about" are used to describe and consider minor variations. When used in connection with an event or circumstance, the term may refer to a situation in which an event or circumstance occurs explicitly and where the event or circumstance is very similar. For example, the term can mean less than or equal to ±10%, such as less than or equal to ±5%, less than or equal to ±4%, less than or equal to ±3%, less than or equal to ±2%, less than or equal to ±1 %, less than or equal to ±0.5%, less than or equal to ±0.1% or less than or equal to ±0.05%.

In addition, quantities, ratios, and other values are sometimes presented in a range format herein. It should be understood that such range formats are used for convenience and brevity and should be flexible and geographically The solution includes not only the numerical value of the range limitation, but also all individual values or sub-ranges that are included in the range, as if each value and sub-range are explicitly specified.

The present invention has been described and illustrated with reference to the particular embodiments of the invention. It will be understood by those skilled in the art that various changes can be made and substituted by equivalents without departing from the true spirit and scope of the invention as defined by the appended claims. The illustrations may not necessarily be drawn to scale. Due to manufacturing processes and tolerances, there may be differences between the artistic representations of the present invention and actual devices. There may be other embodiments of the invention that are not specifically described. The description and drawings are to be regarded as illustrative rather Modifications may be made to adapt a particular situation, material, material composition, method or process to the object, spirit and scope of the invention. All such modifications are intended to fall within the scope of the patent application. Although the methods disclosed herein have been described with reference to the specific operations performed in a particular order, it is understood that these operations can be combined, sub-divided or re-ordered to form an equivalent method without departing from the teachings of the invention. Therefore, the order of operations and groupings are not limiting of the invention unless specifically indicated herein.

1‧‧‧Device for ink stamping

12‧‧‧Processing agencies

13‧‧‧Printing head mechanism

131‧‧‧Ink tray

132‧‧‧Inkjet rack

133‧‧‧Adhesive seat

1331‧‧‧ plastic head

134‧‧‧ scraper

135‧‧‧Stereo

136‧‧・Nozzle head

137‧‧‧ fixed seat

14‧‧‧Diluent storage tank

15‧‧‧Diluent flow control device

16‧‧‧pipe

17‧‧‧Test institutions

18‧‧‧Workpiece

19‧‧‧Ink

Claims (24)

A method for ink stamping, comprising: stamping ink on a surface of a plurality of workpieces; receiving a first signal by a control module; and the control module responding to the first signal to perform the following operations: pausing the stamping ink Adding a first amount of a diluent to the ink; agitating the ink to uniformly mix the first amount of the diluent in the ink; and performing a stamping ink. The method of claim 1, further comprising the step of testing a stamp to confirm the density of the ink by confirming the quality of the stamp. The method of claim 2, wherein if the concentration of the ink is too high, the control module performs the following operations in response to a second signal: pausing the printing ink; adding a second amount of the diluent to the ink; The ink is agitated to uniformly mix the second amount of the diluent in the ink; and the stamping ink is applied. The method of claim 3, wherein the first quantity is the same as the second quantity. The method of claim 3, wherein the first quantity is different from the second quantity. The method of claim 3, wherein the second signal is issued in response to a manual switch. The method of claim 1, wherein the first signal has a periodic timing signal. The method of claim 7, wherein one of the timing signals has a certain period of time. The method of claim 7, wherein the timing period of one of the timing signals is gradually shortened. The method of claim 7, wherein the timing period of one of the timing signals is adjustable according to the type of the ink. The method of claim 1, wherein the first signal is a counting signal, and the counting signal is issued when the preset number of the workpieces is cumulatively stamped. The method of claim 1 further comprising the step of monitoring the quality of the pattern of ink printed on the workpieces. An apparatus for ink stamping, comprising: a control module; a processing mechanism for carrying and conveying and a plurality of workpieces, the processing mechanism being connected to the control module and receiving control of the control module; The stamping head mechanism comprises an ink tray, an ink cartridge and a rubber head holder. The stamping head mechanism is connected to the control module and is controlled by the control module. The ink tray is for accommodating an ink. The ink cartridge is used to drive out the ink, the rubber head holder has a plurality of plastic heads for adhering the ink, and printing the ink to the workpieces on the processing mechanism; a diluent storage a tank for storing a diluent, wherein the diluent storage tank uses a pipeline to add the diluent to the ink tray; and a diluent flow control device connected to the control module and controlled by the control module To control the amount of diluent added to the ink tray. The device of claim 13, wherein the control module is a Programmable Logic Controller (PLC). The device of claim 13, wherein the capping mechanism further comprises a scraper and a cliche, the ink disc comprising a first zone and a second zone, one surface of the one of the plates having a plurality of score patterns, the template is located in a first area of the ink tray, the ink is located in a second area of the ink tray, and the diluent is added to the ink in the second area of the ink tray, the ink cartridge Used to drive out the ink and the diluent located in the second zone of the ink tray, and drive the diluted ink to the stencil on the first zone of the ink tray, the squeegee is used to scrape the stencil The ink of the surface, the glue head is used to adhere the ink located in the nick pattern of the stencil. The device of claim 15 further comprising a nozzle head located in the second region of the ink tray, the conduit being connected to the nozzle tip, the diluent being added to the second region of the ink tray via the nozzle tip, and The nozzle tip is controlled by the diluent flow control device to control the amount of diluent added to the ink tray. The device of claim 13, further comprising a nozzle head adjacent to the ink tray, the pipeline is connected to the nozzle head, the diluent is added to the ink tray via the nozzle head, and the nozzle head receives the dilution Control of the flow control device to control the amount of diluent added to the ink tray. The device of claim 13, wherein the control module performs the following operations in response to a first signal: stopping the processing mechanism and the stamp head mechanism; and controlling the diluent flow control device to add a first amount of thinner In the ink tray; controlling the ink cartridge to agitate the ink to uniformly mix the first amount of the diluent in the ink tray; and initiating the processing mechanism and the stamp head mechanism. The device of claim 18, wherein the first signal has a periodic timing signal. The device of claim 19, wherein one of the timing signals has a certain period of time. The apparatus of claim 19, wherein the timing period of one of the timing signals is gradually shortened. The device of claim 19, wherein the timing period of one of the timing signals is adjustable according to the type of the ink. The device of claim 18, wherein the first signal is a count signal that is issued when a predetermined number of the workpieces are cumulatively stamped. The apparatus of claim 13 further comprising a detection mechanism for monitoring the quality of the pattern of ink printed on the workpieces.