JPS6283147A - Method and apparatus for applying glass frit - Google Patents

Abstract

PURPOSE:To make it possible to efficiently perform the coating work of glass frit at good yield, by once printing glass frit to be coated on a transfer belt and transferring the same to a treatment member. CONSTITUTION:A transfer belt 2c having glass frit printed thereon is rotationally driven to a predetermined position to move the printed glass frit to a transfer position. At the same time, a head transfer jig 6 is raised by the action of a vertical drive cylinder 6a to move a treatment member 5 to a position contacted with the transfer belt 2c and, by this mechanism, the glass frit on the transfer belt 2c is scraped off to be transferred to the treatment member 5. Therefore, by changing the area to be printed on the transfer belt, the coating thickness of the glass frit can be easily adjusted and the positional alignment of a mask and each treatment member is unnecessary and work can be efficiently performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for applying glass frit to a processing member (for example, a frame for mounting parts) made of, for example, glass or ceramic.

[Prior Art] Conventionally, for example, screen printing has been used to apply glass frit to a frame when attaching parts.
In this screen printing method, parts are attached using a screen printing mask with a printing pattern formed to match the size and shape of the part of the frame to be coated, and the parts are attached on the frame. The mounting for positioning and processing the glass frit of a predetermined opening through the screen by means of a squeegee is printed on the frame.

[Problems to be Solved by the Invention] By the way, in the method of applying glass frit to a processing member using such a normal screen printing method, if there is variation in the dimensions of the processing member, it is difficult to deal with the variation. It is necessary to change the pattern dimensions of the screen printing mask used at the same time, and glass frit cannot be applied efficiently. Furthermore, if the coating surface is uneven, screen printing may not be possible or the coating thickness will not be uniform. When attaching small parts, in the case of relatively small-sized processing members such as frames, usually multiple processing members are coated at once, so it is troublesome to align each processing member with the screen printing mask. Even if there is no variation in the dimensions of each processing member, printing misalignment often occurs, resulting in poor yield.

Furthermore, in the screen printing method, printing pressure is applied to the processing member by a squeegee through a screen printing mask, so the coating thickness cannot be increased very thick in one printing, and even if overprinting is performed, the applied glass frit may sag. It is easy to cause this, and the product may be eaten up in areas where it should not be applied, resulting in the product being unsuitable.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a glass frit coating method and apparatus that can solve the drawbacks and problems of the prior art and can achieve a high yield and efficiently perform glass frit coating work. There is a particular thing.

[Means for Solving the Problems] In order to achieve the above object, the glass frit coating method according to the present invention includes printing the glass frit to be coated on a rotatable transfer belt by a screen printing method,
The transfer belt on which a predetermined amount of glass frit 1 has been printed is rotated, and a processing member is brought into contact with the transfer belt in synchronization with the rotation of the transfer belt, thereby removing the glass frit printed on the transfer belt. It is characterized in that it is transferred onto the processing member.

Further, the apparatus for carrying out the above method of the present invention includes at least one transfer belt 1 to which is intermittently rotationally driven to a predetermined position by the drive roller between a drive roller and a transfer roller; Located adjacent to the top,
A screen printing device that sequentially prints a predetermined amount of glass frit onto each of the transfer belts, and a portion of each of the transfer belts that rotates around the transfer roller in synchronization with the intermittent rotational drive of each of the transfer belts. It is characterized by having a processing member support and conveyance device that sequentially brings the processing members into contact with each other.

[Function] In the method according to the present invention configured as described above, the glass frit to be applied is not directly printed on the processing member, but is once printed on the transfer belt and then transferred onto the processing member. Therefore, the glass frit on the transfer belt can be transferred to a predetermined location on the processing member without the substantial printing pressure associated with screen printing. In this case, there is no need to align the mask and each processing member, and the drive of the transfer belt and the movement of the processing member to which glass frit is applied are performed in synchronization, so even if there are variations in the processing member, the required amount can be maintained. Glass frit can be transferred accurately and uniformly.

Furthermore, in the apparatus according to the present invention, the operations of the transfer belt, the screen printing device, the support of the processing member, and the conveyance device are performed in conjunction with each other, so that a series of coating operations can be automated. Even if there are variations in each processing member, a predetermined amount of glass frit can be accurately applied to a predetermined portion of each processing member by adjusting the elasticity, curvature, and axis of the transfer belt.

[Example] Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

1, 2, and 3 schematically show a glass frit coating apparatus according to an embodiment of the present invention, 1 is a machine base, and on this machine base 1 there is a transfer belt mechanism 2, a screen printing A device 3 and a support and transport device 4 for processing members are provided. In the illustrated embodiment, two transfer belt mechanisms 2 are provided facing each other, and each transfer belt modification 2 includes a drive roller 2a, a transfer roller 2b, and ten transfer belts made of an elastic material mounted between these rollers. 2c, each transfer belt 2C is intermittently rotationally driven by a drive roller 2a, and the drive roller 2a is connected to a drive motor (not shown) controlled by a drive control device (not shown).

A screen printing device 3 is provided for each transfer belt mechanism 2, and each screen printing device 3 includes a screen member 3a disposed above and adjacent to each transfer belt 2C of the combined transfer belt mechanism 2. , a doctor 3C equipped with a doctor drive cylinder 3b, a squeegee 3e equipped with a squeegee drive cylinder 3d, and a printing cylinder 3f.
The assembly of the doctor 3C and the squeegee 3e is attached to the support member 3g, and the support member 3g
g is slidably attached to two shafts 3h provided in parallel along the rotational direction of the transfer belt mechanism 2, and is driven along the rotational direction of the transfer belt mechanism 2 by the printing cylinder 3f. Further, the screen member 3a is held at a predetermined position by a clamp cylinder 31.

Further, as shown in FIG. 1, a support and conveyance device 4 for the processing member is provided in parallel to each transfer belt mechanism 2 and each screen printing device 3, and includes a carry-in belt 4a for carrying in the processing member 5 and a carry-out belt. 4b and these carrying belts 4
A vacuum chuck 4e for transferring a processing member 4e, a vacuum chuck 4f for taking out a processing member, and these vacuum chucks are attached to a support member 4d that is configured to move along two shafts 4C provided between the transport belt 4b and the transport belt 4b. A processing member transfer cylinder 4h that moves the assembly of the drive cylinder 4g, the support member 4d, both vacuum chucks 4e and 4'', and the drive cylinder 4g along the two axes 4C.
It has Further, in the drawing, reference numeral 6 denotes a 10-head transfer jig for supporting the processing member and movable between the position of the conveying device 4 and the position of each transfer belt mechanism 2 and each screen printing device 3. , this 10-head transfer jig 6 is a vacuum chuck 4e.

4" and the receiver of the processing member 5 are driven up and down by a vertical drive cylinder 6a for handover, and laterally driven by a horizontal drive cylinder 6b, and the position of the processing member 5 is controlled by a head indexing cylinder. Performed by 6C.

To explain the operation of the threading device configured in this way, the vacuum chuck 4e for transferring the processing member is connected to the drive cylinder 4.
g, it descends and attracts ten of the large number of processing members 5 placed at predetermined positions on the carry-in belt 4a, and these ten processing members 5 are transferred to the processing member transport cylinder 4.
By the action of h, the vacuum chuck 4e is transferred onto the 10-head transfer jig 6, and the vacuum chuck 4e returns to its original position. In this way, ten processing members 5 are transferred from the processing member transfer vacuum chuck 4e.
The received 10-head transfer jig 6 has a vertical drive cylinder 6
It is moved to a transfer position between the two transfer belt mechanisms 2 by the functions of the horizontal drive cylinder 6a and the horizontal drive cylinder 6b.

On the other hand, the doctor drive cylinder 3b and the printing cylinder 3r
By this action, the doctor 3C uniformly spreads the glass frit filled in advance on the screen member 3a, and the screen member 3a is held by the clamp cylinder 31. Then, the squeegee 3e is driven by the action of the squeegee drive cylinder 3dJ3 and the printing cylinder 3[, and prints glass frit onto each transfer belt 2C via the screen member 3a. In this way, the transfer belt 2C on which the glass frit has been printed is rotated to a predetermined position and moves the printed glass frit to the transfer position. At the same time, the 10-head transfer jig 6 rises under the action of the vertical drive cylinder 6a and moves the processing member 5 to a position where it contacts the transfer belt 2C, thereby scraping the glass frit on the transfer belt 2c and processing it. It is transferred onto the member 5.

In this case, when the processing member 5 is a rectangular frame as shown in FIG. 4, the glass frit 7 can be applied simultaneously on the opposite edges.

Thereafter, each processing member 5 is rotated through an angle of 90 degrees by the action of the head indexing cylinder 6C incorporated in the 10-head transfer jig 6, and in the same manner, glass frits 7 are placed on the remaining two opposing edges. can be applied.

The 10-head transfer jig 6 supporting each of the processing members 5 on which glass frit application has been completed is lowered, and these processing members 5 are transferred to the carry-out belt 4b by the processing member take-out vacuum chuck 4f.

At the same time, the processing member transfer vacuum chuck 4e grasps the processing member 5 to be coated next on the carry-in belt 4a, and starts the next printing and transfer process. By repeating such operations, glass frit can be sequentially applied to the processing member 5.

In the illustrated embodiment, two sets of the transfer belt mechanism 2 and the screen printing device 3 are provided, but of course, a set of two or more sets may be used, and processing members are carried in and out on the same side. It is also possible to enter the transfer belt mechanism 2 and the screen printing device 3 from one side and take them out from the other side.

[Effects of the Invention] As explained above, according to the present invention, the glass frit to be applied is not directly printed on the processing member, but is printed once on the transfer belt, and then transferred onto the processing member. Therefore, the coating thickness of the glass frit can be easily adjusted by changing the area printed on the transfer belt, and the required amount of glass can be easily adjusted even if there are variations in the processing member or unevenness on the coating surface. Frit can be transferred accurately and uniformly. Furthermore, alignment between the mask and each processing member is not necessary, and the work can be carried out efficiently.

Further, by using the apparatus according to the present invention, it is possible to automate the application of this type of glass frit, and it is possible to significantly improve productivity as well as improve yield.

[Brief explanation of drawings]

1 is a schematic plan view showing an embodiment of the present invention, FIG. 2 is a schematic side view showing the transfer belt mechanism and screen printing device in the apparatus shown in FIG. 1, and FIG. 3 is a schematic side view showing the apparatus shown in FIG. 1. A schematic side view showing the support and conveyance device for the processing member in the
FIG. 4 is a perspective view showing an example of the processing member. In the figure, 2: transfer belt mechanism, 3 two-screen printing device,
4: Support and conveyance device for processing members. Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. Print the glass frit to be applied onto a rotatable transfer belt by screen printing, rotate the transfer belt on which a predetermined amount of glass frit has been printed, and apply the glass frit to the transfer belt. A method for applying glass frit, characterized in that a processing member is brought into contact with the transfer belt in synchronization with the rotation of the belt, and glass frit printed on the transfer belt is transferred to the processing member. 2. at least one transfer belt that is intermittently rotationally driven to a predetermined position by the drive roller between the drive roller and the transfer roller; A screen printing device sequentially prints a predetermined amount of glass frit onto a transfer belt, and a processing member is provided at a portion of each transfer belt that rotates around the transfer roller in synchronization with the intermittent rotational drive of each transfer belt. 1. A glass frit coating device comprising a support and conveyance device for processing members that are brought into sequential contact with each other.