阅读说明：本技术 丝网印刷方法、丝网印刷机 (Screen printing method and screen printing machine ) 是由 近藤毅 于 2018-02-16 设计创作，主要内容包括：本发明能够向在两个通道中的各通道中输送的第一电路基板和第二电路基板印刷不同种类的粘性流体。本公开的丝网印刷方法包含使用第一刮板和第一保持部件经由丝网而向第一电路基板进行第一粘性流体的印刷的工序及使用第二刮板和第二保持部件经由丝网而向第二电路基板进行第二粘性流体的印刷的工序。这样,在第一粘性流体向第一电路基板的印刷和第二粘性流体向第二电路基板的印刷中,利用互不相同的刮板、保持部件,因此第一粘性流体和第二粘性流体不会混合。其结果是,能够向第一电路基板和第二电路基板进行互不相同的种类的粘性流体的印刷。(The present invention enables printing of different kinds of viscous fluids to a first circuit substrate and a second circuit substrate that are conveyed in each of two channels. The screen printing method of the present disclosure includes a step of printing a first viscous fluid on a first circuit substrate through a screen using a first squeegee and a first holding member, and a step of printing a second viscous fluid on a second circuit substrate through a screen using a second squeegee and a second holding member. In this way, since the different squeegee and holding member are used for printing the first viscous fluid on the first circuit board and printing the second viscous fluid on the second circuit board, the first viscous fluid and the second viscous fluid are not mixed. As a result, it is possible to print viscous fluids of different types on the first circuit board and the second circuit board.)

1. A screen printing method prints a viscous fluid onto a first circuit substrate and a second circuit substrate respectively conveyed in respective ones of two channels via a screen using a pair of squeegees and two holding members capable of holding the viscous fluid,

the screen printing method includes the steps of:

a first printing step of printing a first viscous fluid, which is the viscous fluid, on the first circuit board using a first blade, which is one of the pair of blades, and a first holding member, which is one of the two holding members; and

and a second printing step of printing a second viscous fluid different from the first viscous fluid on the second circuit board using a second blade which is the other blade of the pair of blades and a second holding member which is the other holding member of the two holding members.

2. The screen printing method according to claim 1,

the first printing step includes the steps of:

a first blade moving step of moving the first blade in a first direction from a first start position to print the first viscous fluid held by the first holding member at the first start position on the first circuit board; and

a first holding step of causing the first holding member to hold the first viscous fluid at a first end position spaced in the first direction from the first start position,

the second printing step includes the steps of:

a second blade moving step of moving the second blade from a second start position in a second direction opposite to the first direction to print the second viscous fluid held by the second holding member at the second start position on the second circuit board; and

a second holding step of holding the second viscous fluid by the second holding member at a second end position spaced from the second start position in the second direction,

the screen printing method includes the steps of:

a second start position moving step of moving the pair of squeegees from the first end position to the second start position after the first printing step; and

and a first holding member returning step of returning the first holding member holding the first viscous fluid from the first end position to the first start position in parallel with at least one of the second start position moving step and the second printing step.

3. The screen printing method according to claim 2, wherein,

the screen printing method includes the steps of:

a first start position moving step of moving the pair of squeegees from the second end position to the first start position after the second printing step; and

and a second holding member returning step of returning the second holding member holding the second viscous fluid from the second end position to the second start position in parallel with at least one of the first start position moving step and the first printing step.

4. The screen printing method according to claim 2 or 3, wherein,

the first holding step includes the steps of:

a first squeegee moving step of moving the first holding member in the first direction after the first squeegee moving step, and moving the first holding member to the first end position in front of the first squeegee beyond the first squeegee; and

a first placement step of placing the first viscous fluid on the first holding member by moving the first blade in the first direction toward the first holding member located at the first end position,

the second holding step includes the steps of:

a second squeegee moving step of moving the second holding member in the second direction after the second squeegee moving step, and moving the second holding member to the second end position ahead of the second squeegee beyond the second squeegee; and

and a second placement step of placing the second viscous fluid on the second holding member by moving the second blade in the second direction toward the second holding member located at the second end position.

5. A screen printer prints a viscous fluid via a screen to a first circuit substrate and a second circuit substrate conveyed in each of two channels,

the screen printer includes:

a squeegee device including a pair of squeegees for moving each of the pair of squeegees on the screen;

a viscous fluid holding device which is provided with two holding members capable of holding the viscous fluid and moves the two holding members independently; and

and a print control unit that controls the squeegee unit and the viscous fluid holding unit, thereby printing a first viscous fluid, which is the viscous fluid held by the first holding member, which is one of the two holding members at the first start position, on the first circuit board by moving the first squeegee, which is one of the pair of squeegees, from a first start position in a first direction, and printing a second viscous fluid, which is different from the first viscous fluid, held by the second holding member, which is the other of the pair of squeegees, on the second circuit board by moving the second squeegee, which is the other of the pair of squeegees, from a second start position in a second direction opposite to the first direction.

6. The screen printing machine according to claim 5,

the print control device moves the first holding member in the first direction after printing of the first viscous fluid on the first circuit board by the first squeegee is completed, thereby moving the first holding member to a first end position spaced apart from the first start position in front of the first squeegee beyond the first squeegee, moves the first squeegee in the first direction toward the first holding member positioned at the first end position, thereby holding the first viscous fluid on the first holding member, and moves the second holding member in the second direction after printing of the second viscous fluid on the second circuit board by the second squeegee is completed, thereby moving the second holding member to a second end position spaced apart from the second start position in front of the second squeegee beyond the second squeegee, and holding the second viscous fluid by the second holding member by moving the second blade in the second direction toward the second holding member located at the second end position.

7. The screen printing machine according to claim 5 or 6,

the print control device moves the pair of squeegees from the first end position to the second start position after the first viscous fluid is held by the first holding member at the first end position, but the first holding member is returned from the first end position to the first start position in parallel with the movement of the pair of squeegees from the first end position to the second start position and/or the second printing process, moving the pair of scrapers from the second end position to the first start position after the second viscous fluid is held by the second holding member at the second end position, however, the second holding member is returned from the second end position to the second start position in parallel with the movement of the pair of squeegees from the second end position to the first start position and/or the first printing process.

8. The screen printing machine according to any of claims 5 to 7,

the first start position and the second start position are located on both side portions in the direction in which the two paths of the main body of the screen printing machine are juxtaposed.

9. The screen printing machine according to any of claims 5 to 8,

the viscous fluid holding means includes a first moving means capable of moving the first holding member in parallel with the pair of squeegees and a second moving means different from the first moving means capable of moving the second holding member in parallel with the pair of squeegees,

the first moving device and the second moving device include a common pair of guide members that guide the movement of the first holding member and the second holding member.

10. The screen printing machine according to any of claims 5 to 9,

the screen is provided one in common to the first circuit substrate and the second circuit substrate,

the screen printing machine is provided with a screen supporting device for supporting the screen.

11. The screen printing machine according to any one of claims 5 to 10,

the viscous fluid holding device comprises two holding member supports for holding the two holding members, respectively, and moves the two holding member supports independently from each other,

each of the two holding members is two holding plates each having a flat plate shape,

the two holding plates are detachably attached to the two holding member supports, respectively.

Technical Field

The present invention relates to a screen printing method and a screen printer for printing a viscous fluid on a circuit board.

Background

Patent document 1 describes a screen printer that prints a viscous fluid on one of a first circuit substrate (hereinafter, the circuit substrate is simply referred to as a substrate) and a second substrate, which are conveyed through each of two channels, through a screen by using a pair of squeegees and a pair of holding plates. In the screen printer described in patent document 1, printing of a viscous fluid is performed on one of a first substrate and a second substrate by one of a pair of squeegees and one of a pair of holding plates.

Disclosure of Invention

Subject of the present disclosure

The problem of the present disclosure is to enable printing of different types of viscous fluids on a first substrate and a second substrate that are conveyed to each of two channels.

Means, action and Effect for solving the problems

The screen printing method of the present disclosure includes a step of performing printing of a first viscous fluid to a first substrate via a screen using a first squeegee and a first holding member, and a step of performing printing of a second viscous fluid to a second substrate via the screen using a second squeegee and a second holding member. In this way, since the squeegee and the holding member which are different from each other are used for printing the first viscous fluid on the first substrate and printing the second viscous fluid on the second substrate, the first viscous fluid and the second viscous fluid are not mixed. Therefore, printing of different types of viscous fluids on the first substrate and the second substrate can be performed satisfactorily.

The screen printing machine of the present disclosure includes: a squeegee device provided with a first squeegee and a second squeegee; a viscous fluid holding device provided with a first holding member and a second holding member; and a print control device that controls the squeegee device and the viscous fluid holding device so as to print the first viscous fluid on the first substrate through the screen by the first squeegee and the first holding member and print the second viscous fluid on the second substrate through the screen by the second squeegee and the second holding member. Therefore, it is possible to print viscous fluids of different kinds to the first substrate and the second substrate without mixing.

Drawings

Fig. 1 is a perspective view of a screen printer of an embodiment of the present disclosure. In the screen printer of the present disclosure, the screen printing method as an embodiment of the present disclosure can be implemented.

Fig. 2 is a front view of the screen printer.

Fig. 3 is a side view of a portion of the screen printer described above.

Fig. 4 is a perspective view showing a part of the solder recovery apparatus of the screen printer described above.

Fig. 5 is a perspective view showing another part of the solder recovery apparatus.

Fig. 6 is a block diagram conceptually showing the periphery of the control device of the above-described screen printer.

Fig. 7 is a diagram showing the operation in the screen printer described above.

Fig. 8 is a flowchart showing a screen printing program stored in the storage unit of the control device.

Fig. 9 is a flowchart showing a part of the screen printing program.

Fig. 10 is a flowchart showing another part of the screen printing program.

Detailed Description

Hereinafter, a screen printer according to an embodiment of the present disclosure will be described in detail with reference to the drawings. In the screen printer, the screen printing method according to an embodiment of the present disclosure can be implemented. In the present embodiment, cream solder (hereinafter, simply referred to as solder) is used as the viscous fluid.