JP3087366B2 - Printing machine, screen mask for printing machine, and 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 printing machine for printing conductors for forming a circuit on a substrate for an electronic circuit, a cream solder or the like by using a screen and a squeegee, and a screen for a printing machine.
And a printing method .

[0002]

2. Description of the Related Art Conventionally, this type of screen mask for a printing press has a structure as shown in FIG. 4 as disclosed, for example, in Japanese Patent Application Laid-Open No. 62-56145. That is, a pair of squeegees 3 each having a bent portion are provided above the screen mask 1 and at both ends in the screen frame 2, and one squeegee 3 a is elastically contacted on the screen mask 1, and the other squeegee 3 b is lifted up. , The squeegee 3b, which has been floated first, is elastically contacted with the screen mask 1, the squeegee 3a is lifted, and the squeegee 3a is moved in the direction opposite to the forward path to perform printing on the backward path. ing. 4 is a paste.

[0003]

However, in the above-described configuration, the squeegee 3 can be used while printing is repeated.
The paste 4 protrudes little by little from the bent portions at both ends of the squeegee.
It has to be put back inside, and the work efficiency is poor. Alternatively, the protruding paste 4 dries with the passage of time and its properties change, so that printing becomes impossible and is uneconomical. Further, since the squeegees 3a and 3b use an elastic body such as urethane rubber, if both ends are bent, the squeegees 3a and 3b are bent.
There is a problem that the tip of the lower end of b is deformed and accurate printing cannot be performed.

In view of the above problems, the present invention provides paste guides on a screen mask at both ends of a squeegee and in parallel with the moving direction of the squeegee.
Printing machines and printing machine screens that prevent the paste applied on the screen mask from protruding from both ends of the squeegee.
It is an object to provide a lean mask and a printing method .

[0005]

In order to achieve the above object, according to the present invention, there is provided the present invention, wherein a screen attached to a screen frame is moved while contacting the screen.
A squeegee that moves and prints a printing paste on a substrate, and a moving direction of the squeegee on the screen.
And set in parallel with the width of the squeegee.
The printing press was provided with a paste guide whose position could be changed . Further, in claim 2, paste guide both
A contract consisting of a pair of paste guides whose installation position can be changed
A printing press according to claim 1 . In claim 3,
The squeegee comprises a pair of reciprocating squeegees,
While one squeegee touches the screen,
Travels and prints on the outbound path.
While the other squeegee is touching the screen
Move and guided by the paste guide
The printing press according to claim 1 or 2, wherein the printing is performed. Also, billing
In Item 4, the printing paste is cream solder.
The printing press according to any one of claims 1 to 3. Ma
In addition, according to claim 5, attached to the screen frame
A screen and a squeegee moving in contact with the screen
Installed parallel to the direction of movement of the squeegee and
It has a paste guide that can change the installation position according to
Screen mask for a printing press. Also, in claim 6
And place a screen on the substrate, and squeegee
It moves while touching the screen, and the printing paper
A printing method for printing a paste on the screen.
At a position parallel to the moving direction of the squeegee, and
The paste guide that can change the installation position
Printing method according to the width of the printing paper.

[0006]

According to the present invention, the paste on the screen mask is guided by the paste guide provided on the screen mask even when printing is repeated, according to the above-described structure.
It does not protrude from both ends of the squeegee.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A screen mask for a printing press according to one embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a screen mask for a printing press according to an embodiment of the present invention, and FIG. 2 is a plan view of the screen mask. In FIG. 1, 5 is a screen frame, 6a is a screen attached to the screen frame 5, and 6b is a print pattern provided on the screen 6a. Reference numeral 7a denotes one paste guide, 7b denotes the other paste guide, both ends of which are fitted into the screen frame 5, and squeegees 9a, 9b as shown in FIG.
9b is fixed at a position sandwiching both side surfaces.

The operation of the screen mask for a printing press configured as described above will be described below with reference to FIGS. FIG. 3 is a side sectional view of a screen mask for a printing press. A pair of squeegees 9a and 9b for printing are provided on the screen mask so that one squeegee 9a is attached to the screen 6a. The other squeegee 9b is in a floating state, the pair of squeegees 9a, 9b are moved in the direction of the floating squeegee 9b, a first printing process is performed, and then the floating squeegee 9b is moved to the screen 6a. And the squeegee 9a is lifted and moved in the direction opposite to that of the squeegee 9a in which the pair of squeegees 9a and 9b are lifted, and the second printing process is performed. By repeating the above operation, the paste 11 is printed and formed in a desired pattern on the printing material 10 arranged below the screen mask. When performing this printing operation, paste 11
Are the squeegee 9a or 9b and the paste guides 7a and 7b.
b, and reciprocates on the screen 6a.

As described above, according to this embodiment, the paste guides 7a and 7b are provided on the screen mask at positions substantially in contact with both side surfaces of the squeegees 9a and 9b and in parallel with the moving direction.
By providing the b, the paste 11 on the screen does not protrude from both ends of the squeegees 9a and 9b even if printing is repeated, so that it is not necessary to return the protruded paste 11 to the inside of the squeegees 9a and 9b, and the printing operation can be performed. It can be performed efficiently and continuously. In the present embodiment, the paste guides 7a and 7b are fixed to the screen frame 5 with the screws 8a and 8b as a method of providing the paste guides 7a and 7b. However, the paste guides 7a and 7b may be fixed directly on the screen 6a.

[0010]

As is clear from the above description, the screen mask for a printing press according to the present invention is provided with a paste guide on the screen mask at a position substantially in contact with both side surfaces of the squeegee and in parallel with the moving direction of the squeegee. Because the paste on the screen does not protrude from both ends of the squeegee even if printing is repeated, there is no need to return the protruding paste into the squeegee, and no waste of paste is consumed, making printing work more efficient. Can be performed well continuously.

[Brief description of the drawings]

FIG. 1 is a perspective view of a screen mask for a printing press of the present invention.

FIG. 2 is a plan view of the screen mask.

FIG. 3 is a side sectional view of the screen mask.

FIG. 4 is a plan view of a conventional screen mask for a printing press.

[Explanation of symbols]

 5 Screen frame 6a Screen 7a, 7b Paste guide 9a, 9b Squeegee 11 Paste

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Satoshi Sasaki 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. In-house (56) References JP-A-2-192943 (JP, A) JP-A-57-111542 (JP, U) JP-A-4-2632 (JP, U) JP-A-57-191534 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B41N 1/24 B41F 15/36 B41F 15/40

Claims (6)

(57) [Claims] A screen affixed to the screen frame [1 claims ## to move while in contact with the screen, and printing
A squeegee to print the printing paste on an object, the scree
Installed parallel to the direction of movement of the squeegee
Installation position can be changed according to the width of the squeegee
Printing machine with a functional paste guide. 2. The installation position of both paste guides can be changed.
The printing according to claim 1, comprising a pair of functional paste guides.
Machine. 3. A pair of squeegees for reciprocating movement.
One squeegee touches the screen.
While being guided by the paste guide
Print the road and the other squeegee is on the screen
While being in contact, it is guided by the paste guide and moves
The printing press according to claim 1, wherein printing is performed on a return path. 4. The printing paste is cream solder.
The printing press according to any one of claims 1 to 3. 5. A screen attached to a screen frame.
And how the squeegee moves in contact with the screen
Installed in parallel with the squeegee and the width of the squeegee
Printing machine with paste guide whose installation position can be changed
For screen mask. 6. A method in which a screen is arranged on a printing substrate, and skiing is performed.
The print substrate is moved while touching the screen,
A printing method for printing a printing paste on the screen.
Installed on the lean parallel to the squeegee moving direction
The paste guide that can be
A printing method that prints according to the width of the squeegee.