JP3284601B2 - Cleaning equipment for cream solder printing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning apparatus for a cream solder printing machine equipped with a camera for checking a mask opening state for inspecting a mask opening.

[0002]

2. Description of the Related Art In recent years, there has been a strong demand for a cream solder printing machine to remove solidified printing material and foreign substances mixed in a mask opening portion.

[0003] A conventional cleaning device for a cream solder printing machine will be described below. Before that, a conventional printing process will be described with reference to FIG. In FIG. 2, 1 is a printed board, 2 is a land on which the cream solder 4 is printed, 3 is a solder resist, 5 is a metal mask having a predetermined pattern opening 6 formed thereon, and 7 is a linear movement on the mask 5. It is a printing squeegee. FIG. 3 is a diagram showing a configuration of a conventional cleaning device for a cream solder printing machine. The cleaning device includes an air injection unit 9 directly connected to an air injection device 8, an air suction unit 11 directly connected to an air suction device 10, a filter 1
2, a cleaning paper 13, a suction unit 14 for the cleaning paper 13, and a winding unit 15.

Next, the cleaning device will be described with reference to FIG. 4. The cleaner 16 includes a cleaning squeegee 17, a cleaning paper 18, a supply unit 19 for the cleaning paper 18, and a winding unit 20.

[0005] The operation of the cleaning device for a cream solder printing machine configured as described above will be described below with reference to FIG. First, in the printing process, the mask 5 is positioned and superimposed on the printed circuit board 1, and the squeegee 7 is directly moved while being in contact with the mask 5 at an appropriate printing pressure.
After the cream solder 4 is filled in the opening 6 of the mask 5,
By separating the mask 5 from the printed board 1, the cream solder 4 is printed and applied in a desired pattern on the printed board 1 via the mask 5. Next, in the cleaning step, the air injection unit 9 and the air suction unit 11 are moved to a position where the entire pattern of the mask opening 6 can be covered.
Is lowered, the air suction unit 11 is raised, and each tip comes into contact with the mask 5. While maintaining this state, the mask opening 6 is opened by the air injection device 8 and the air suction device 10.
The cream solder 4 attached to the mask opening 6 flows out or scatters on the back surface side of the mask 5 by jetting and sucking air to the mask 5. The scattered cream solder 4 is collected by the cleaning paper 13 and the filter 12. After the removal of the cream solder 4 adhering to the mask opening 6 is completed, the air injection device 8 and the air suction device 1
Air injection and suction by 0 are stopped, the air injection unit 9 rises, and the air suction unit 11 descends and returns to the initial position.
Subsequently, in the cleaning step, the cleaner 16 moves to the position A, the cleaning squeegee 17 moves up, and comes into contact with the mask 5 via the cleaning paper 18. The cleaner 16 moves in the direction of the position B while maintaining this state. When moved to position B, cleaning squeegee 17
Then, the cleaning paper 18 is wound by the winding unit 20. Thereafter, the cleaning squeegee 17 rises again and moves to the position A, the cleaning squeegee 17 descends, and then the cleaning paper 18 is wound by the winding unit 20. Thereafter, the cleaning squeegee 17 rises again and moves to the position A, the cleaning squeegee 17 descends, the cleaner 16 returns to the initial position, and the operation of removing the cream solder 4 flowing out to the back side of the mask 5 ends. .

[0006]

However, in the above-described conventional configuration, the mask opening 6 due to solidification of the printing material due to changes in environmental conditions such as temperature and humidity, and foreign matter that has entered.
The removal of the clogging becomes insufficient, the amount of printing material changes in the next printing process, and a uniform amount cannot be applied,
There is a problem that printing failure occurs.

An object of the present invention is to provide a cleaning device for a cream solder printing machine which repeats the cleaning process by checking the clogged state of the mask opening and solving the above problem.

[0008]

According to the present invention, there is provided a cleaning apparatus for a cream solder printing machine according to the present invention, wherein a camera for confirming a state of a mask opening is provided in the cleaning apparatus, and after the cleaning step, the opening of the mask is performed. The condition checking camera checks the clogged state of the mask opening, and if the cleaning is insufficient, repeats the cleaning process.When the cleaning process reaches a predetermined number of times, an alarm device for instructing manual cleaning is provided. Have.

[0009]

With this configuration, after the mask cleaning step, the clogging state of the mask opening is confirmed by the mask opening state confirmation camera, and the cleaning step is repeated until the clogging is eliminated.
In addition, when the predetermined number of times is reached, manual cleaning is instructed, and the mask opening is reliably cleaned and clogged matter is removed, so that uneven application of the printing material in the next printing step can be prevented. .

[0010]

An embodiment of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 1, a camera 21 for checking a mask opening state is provided in a cleaning device. The operation of the cleaning device for a cream solder printer configured as described above will be described with reference to FIG. First, the same printing process as in the related art is performed. Next, in the cleaning step, after the air injection unit 9 is lowered to the position A of the mask 5 and the air suction unit 11 is raised and each end comes into contact with the mask 5, the mask opening is performed by the air injection device 8 and the air suction device 10. Air injection and suction to the part 6 are started. While maintaining this state,
While the air jetting unit 9 and the air suction unit 11 move to the position B in synchronization with the mask 5, the cream solder 4 attached to the mask opening 6 is scattered, and the cleaning paper 1
3 and filter 12. When moved to the position B, the air injection and suction by the air injection device 8 and the air suction device 10 are stopped, the air injection unit 9 is raised, the air suction unit 11 is lowered, and then returns to the position A. In this return stroke, the mask is opened. An inspection step of checking the clogged state of the mask opening 6 after cleaning with the confirmation camera 21 is performed. If any foreign matter remains in the mask opening 6 in this inspection process, the cleaning process is performed again, and the process is repeated until the removal of the foreign material is confirmed. However, if the foreign matter is not removed even after the predetermined cleaning process is repeated, an alarm device (not shown) such as a lamp or a buzzer operates to instruct manual cleaning. After the cleaning step and the inspection step, the cleaning step is performed as in the conventional case.

As described above, according to this embodiment, after the cleaning step, the mask opening state checking camera 21 checks the clogged state of the mask opening 6 in the inspection step. If the clogging is confirmed, the cleaning step is performed. Repeat. Further, if clogging is confirmed even after the predetermined cleaning step, the alarm device is activated and manual cleaning is instructed, so that the foreign matter in the mask opening 6 is reliably removed, and the printing material is removed in the next printing step. It is possible to prevent the occurrence of printing failure due to uneven application.

[0013]

As is clear from the above description of the embodiment, in the present invention, a cleaning device is provided with a mask opening state confirming camera, and in the inspection step after the cleaning step, the state of clogging due to foreign matter in the mask opening is checked. Confirmation, if there is foreign matter, repeat the cleaning process, and when the predetermined number of cleaning processes is reached, the alarm device operates and manual cleaning is instructed, so that the clogging of the mask opening is reliably cleaned, An excellent cleaning apparatus for a cream solder printing machine capable of preventing printing failure due to uneven application of a printing material in the next printing step can be realized.

[Brief description of the drawings]

FIG. 1A is a view showing a cleaning process of a cleaning device of a cream solder printing machine according to an embodiment of the present invention. FIG. 1B is a view showing the inspection process.

FIG. 2 is a diagram showing a conventional printing process.

FIG. 3 is a schematic configuration diagram of a cleaning device of the cream solder printing machine.

FIG. 4 is a schematic configuration diagram of a cleaning device of the cream solder printing machine.

FIG. 5A is a diagram illustrating the printing process. FIG. 5B is a diagram illustrating the cleaning process. FIG. 5C is a diagram illustrating the cleaning process.

[Explanation of symbols]

 Reference Signs List 5 mask 6 mask opening 8 air injection unit 9 air injection unit 10 air suction unit 11 air suction unit 21 mask opening state confirmation camera

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroaki Onishi 1006 Oaza Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-2-60748 (JP, A) JP-A-4-4- 201255 (JP, A) JP-A-55-2041 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B41F 15/12 B41F 15/08 303 B41F 35/00

Claims (1)

(57) [Claims] 1. A cleaning device for a cream solder printing machine in which an air injection unit connected to an air injection unit and an air suction unit connected to an air suction unit are provided on both sides of a mask, wherein a mask opening state confirmation camera is provided. In the inspection step after the cleaning step, the clogging state of the mask opening is inspected, and the cleaning step is repeated according to the clogging state, and the alarm device is activated when the cleaning step reaches a predetermined number of times. Cleaning equipment for solder printing machines.