JP3342293B2 - Screen printing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for supplying cream solder in a screen printer of an electronic component mounting machine.

[0002]

2. Description of the Related Art A method for automatically supplying solder after a screen is automatically replaced by a conventional screen printing machine will be described with reference to FIGS. FIG. 5 is a configuration diagram for explaining the automatic solder supply operation after the automatic screen replacement. The used screen is transferred from the screen body 1 to the automatic screen changing device 3.
Is collected in the stocker section 4 in the inside. In addition, a plurality of unused screens are stored in advance in the stocker unit 4 in the automatic screen changing device 3, and depending on the model to be produced,
The corresponding screen is carried into the printing press main body 1 from the automatic screen exchange device 3, and the model is switched. Unused screens need to be filled with cream solder on the screens by the automatic solder supply device 2, and used screens once used for production and stored in the stocker section must be cleaned and removed unless they are cleaned and removed. It is in a state of being filled with solder.

FIG. 6 is a flowchart for explaining a method of automatically supplying solder after automatic screen replacement of a screen printing machine having an automatic screen exchange device and an automatic solder supply device. Start at $ 1, start production at $ 2.
If you want to continue production at # 3, replace the screen at # 4. At step # 8, the machine is temporarily stopped, and at step # 9, it is determined whether or not the operator needs to supply solder to the screen to be used. When the screen to be used is not used and it is necessary to supply the solder, the operator issues an automatic solder supply operation command in # 10, and the machine performs the automatic solder supply operation in # 6.
When the screen has been used, the solder automatic supply operation is not performed because cream solder remains on the screen.
Thereafter, the operator issues a production restart instruction at # 11, and returns to # 2 to resume production. If the production is not continued at # 3, the production is terminated at # 7.

[0004]

In a conventional screen printing method for an electronic component mounting machine, an operator must determine whether or not a screen used by an operator needs to supply solder to a screen after automatic screen replacement. This has resulted in a loss of man-hours. Further, for this purpose, the machine must be temporarily stopped, and it is necessary to restart the machine irrespective of the presence or absence of the solder supply operation, and there has been a problem that the productivity of the printing press is reduced.

[0005]

According to another aspect of the present invention, there is provided a stocker for storing a screen according to the present invention.
Automatic screen changer and automatic cream solder feeder
In the screen printing method in a screen printing machine with bets, unused screen stored in the stocker
Or used or information to retain on the usage, by determining the usage of the screen printing machine is used then, in the case of unused running solder automatic feeding operation
From, if it has been used, shift to the production start operation directly,
The automatic supply operation of the solder after the screen exchange is performed according to the use condition of the screen.

According to the present invention, after replacing the screen, the operator does not need to determine whether or not solder supply is necessary, and if necessary, does not need to specify the solder supply operation, and the number of work steps can be reduced.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention described in the claims of the present invention
What is claimed is: 1. A screen printing method for a screen printing machine having an automatic screen changing device and an automatic cream solder supply device, wherein a screen stored in a stocker retains information on a use condition, and a use condition of a screen used by the press next. Is a screen printing method characterized in that an automatic supply operation of the solder after the screen replacement is performed according to the use condition of the screen, and it is unnecessary for the operator to supply the solder after the screen replacement. There is no need to judge whether or not the solder supply operation is necessary, and if necessary, the operation can be performed automatically by a machine.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIGS. The configuration in the embodiment of the present invention is the same as that in FIG. 5, and the description thereof is omitted. FIG. 1 is a flowchart for explaining a solder supply method after the automatic screen replacement according to the embodiment of the present invention. Start at $ 1, start production at $ 2. If you want to continue production at # 3, replace the screen at # 4.
In step # 5, as shown in FIG. 2, the printing press main body refers to the information on the screen usage status stored in each stage of the stocker, and determines whether the next screen to be used is unused or used. To check. If not used, the automatic solder supply operation is performed in # 6. If used, the automatic solder supply operation is not performed and the process returns to # 2 to resume the production of the next model. If the production is not continued in # 3, the production is terminated in # 7.

[0009] The information on the use status of the screen is, for example, as shown in FIG. 3, an unused screen is put in the stocker, or as shown in FIG. When the screen is taken out, it is sequentially updated each time.

[0010]

As described above, according to the present invention, the storage
Unused or used on the screen stored in the camera
Stores information about the status of use, and
By automatically determining the usage status of clean,
When using, execute the solder automatic supply operation and then use
If you have already completed
Therefore, after replacing the screen as in the past, there is no need for the operator to determine whether or not solder supply is necessary, and when solder supply is necessary, it is necessary to specify the solder supply action. Is eliminated, and the number of working steps can be reduced. Further, there is no need to stop the machine for designating the solder supply operation after the screen replacement, and the productivity of the printing press can be improved.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating an automatic solder supply operation after an automatic screen replacement according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining information on a use state of a screen in a screen exchange device held by the printing press according to the embodiment of the present invention.

FIG. 3 is an example of screen usage information in a screen exchange device held by a printing press according to an embodiment of the present invention.

FIG. 4 is an example of screen usage information in a screen exchange device holding a printing press, according to an embodiment of the present invention.

FIG. 5 is a configuration diagram for explaining an automatic solder supply operation after the automatic screen replacement.

FIG. 6 is a flowchart for explaining a conventional automatic solder supply operation after automatic screen replacement.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printer main body 2 Automatic solder supply device 3 Automatic screen exchange device 4 Stocker part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-71847 (JP, A) JP-A-4-197684 (JP, A) JP-A-6-262749 (JP, A) JP-A-4-27 314546 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B41F 15/08 B41F 15/40 B41M 1/12 H05K 3/34

Claims (1)

(57) [Claims] 1. A stocker unit for storing a screen is provided.
A screen autochanger that, a screen printing method in a screen printing machine and a cream solder automatic feeder, the screen stored in the stocker
Usage information or unused or spent is held, by determining the usage of screen the next printing machine used, the solder automatic feed operation when unused
And then, if used, move directly to production start operation.
Is the row, the solder automatic feeding operation after the screen replacement, the screen printing method and performing according to the usage status of the screen.