JPH04349965A - Bond coating device - Google Patents

Abstract

PURPOSE:To enable a nozzle to discharge a bond without a hitch by keeping off the nozzle from the obstruction due to the bond remaining in the nozzle. CONSTITUTION:There are provided with a cleaning liquid storage container 5 set to a turntable 4 in place of a syringe 21 storing a bond 20 and a recovery container 12 ready to recover a cleaning liquid 10 which is discharged from a nozzle 6a with the pressure applied to the cleaning liquid 10 in the container 5.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a bond coating device.
After the bond application work to the substrate is completed, the nozzle is cleaned with a cleaning liquid to prevent the nozzle from clogging with bond.

0002

2. Description of the Related Art In the process of mounting electronic components such as ICs and LSIs on a board, a bond is spot-coated at a predetermined position on the board using a bond coating device, and on this bond,
Gluing electronic components is performed.

[0003] Such a bond applicator is constructed by connecting a nozzle to a syringe that stores the bond, and attaching this syringe to a moving table.While moving the syringe by driving the moving table, The bond is dropped from a nozzle onto a predetermined position on the substrate.

0004

[Problems to be Solved by the Invention] After a day's work is completed, bond remains inside the syringe or nozzle, and the viscosity of this bond gradually increases over time. For this reason, conventionally, when the work for the next day was completed and the work resumed the next day, the remaining bond in the nozzle would have hardened considerably, making it extremely difficult to eject the bond from the nozzle, making it difficult to apply the bond to the substrate. There was a problem that the quantity was easily insufficient.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a means for solving the above-mentioned conventional problems and allowing bond to be smoothly discharged from a nozzle when restarting bond coating work after a long suspension of operation. purpose.

[0006]

[Means for Solving the Problems] To this end, the present invention provides a cleaning liquid storage container mounted on a moving table in place of the syringe in which the bond is stored, and applying air pressure to the cleaning liquid in this container. A collection container is provided to collect the cleaning liquid discharged from the nozzle.

[0007]

[Operation] In the above structure, when the work for one day is completed, the cleaning liquid storage container is mounted on the moving table in place of the bond storage container. When this container is moved above the recovery container and air pressure is applied to the container, the cleaning liquid is discharged from the nozzle and the bond remaining inside the nozzle is cleaned and removed.

[0008]

Embodiments Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an overall perspective view of the bond coating apparatus. Reference numeral 1 denotes a substrate, and a positioning part 2 consisting of a clamp member
is positioned. 3 is a conveyor for transporting the substrate 1.

Reference numeral 4 denotes an XY table as a moving table, and a container 5 (see FIG. 2) in which cleaning liquid 10 is stored;
A syringe 21 (see FIG. 3) in which the bond 20 is stored is attached. 9 is a mounting tool. The container 5 and the syringe 21 have the same shape and size, and are attached to the attachment tool 9 so as to be replaceable.

A nozzle portion 6 is detachably connected to the container 5 and the syringe 21, and when air pressure is applied through the air pressure generating means 7 and the tube 8, the cleaning liquid 10 and the bond 20 are released from the nozzle 6a of the nozzle portion 6. It is discharged.

A stage 11 is provided near the positioning section 2, and the stage 11 is provided with a recovery container 12 for the cleaning liquid 10, and bond detection means comprising a light emitting section 13 and a light receiving section 14. The light emitting section 13 and the light receiving section 1
4 are arranged so as to sandwich the collection container 12 therebetween. 15
is a bond discarding table provided on the side of the positioning section 2. This device has the above-mentioned configuration, and its operation will be explained next.

The syringe 21 is mounted on the mounting tool 9, and the XY table 4 is driven to move the syringe 21 in the X and Y directions while applying air pressure to the bond 20 in the syringe 21 and positioning it at a predetermined position on the substrate 1. Bond 20 is applied spot-wise. Electronic components are bonded onto this bond in a later process.

When the coating work for one day is completed, the container 5 is mounted on the XY table 4 in place of the syringe 21. Then, this container 5 is moved directly above the collection container 12, and atmospheric pressure is applied to the cleaning liquid 10 in the container 5. Then, as shown in FIG. 2, the cleaning liquid 10 is discharged from the nozzle 6a into the recovery container 12, and the bond 20 remaining inside the nozzle 6a is cleaned and removed. By cleaning the nozzle 6a in this way, the bond 20 remaining inside the nozzle 6a will solidify.
It is possible to eliminate clogging of the nozzle 6a.

When restarting the bond application work, the syringe 21 is attached instead of the container 5. Then, as shown in FIG. 3, the syringe 21 is moved onto the stage 11, and the lower end of the nozzle 6a is positioned between the light emitting section 13 and the light receiving section 14.

At the same time, when air pressure is applied to the bond 20 in the syringe 21, the bond 20 gradually flows down the nozzle portion 6, and after a while, is discharged from the lower end of the nozzle 6a. When the dripped bond 20a is detected by the light emitting unit 13 and the light receiving unit 14, the syringe 21 is moved onto the discharging table 15, and after discharging the bond 20a onto the table 15, the syringe 21 is moved onto the substrate 1. Move it upward and restart the bond coating work on the substrate 1.

As described above, the light emitting section 13 and the light receiving section 14 confirm that the bond application in the syringe 21 is possible, but in this case, the nozzle 6a has been cleaned as described above. Therefore, the bond 20 smoothly flows down inside the nozzle 6a and drips out.

Generally, the amount of the one-shot bond 20a discharged from the nozzle 6a tends to be excessive. Therefore, by dumping the one-shot bond 20a onto the table 15, the substrate 1 An appropriate amount of bond can be applied to the surface. Of course, this throw-off may be performed several times. Also, when applying bond to the substrate 1, since the nozzle 6a is cleaned,
The discharge property of the bond is extremely good, and an appropriate amount of the bond can be applied.

[0019]

Effects of the Invention As explained above, the present invention provides a cleaning liquid storage container attached to a moving table in place of a syringe in which bond is stored, and a cleaning liquid in this container that can be cleaned from the nozzle by applying air pressure to the cleaning liquid in the container. Since a recovery container is provided to collect the discharged cleaning liquid, the bond can be applied to the substrate while smoothly discharging the bond remaining in the nozzle.

[Brief explanation of drawings]

[Fig. 1] Overall perspective view of a bond coating device according to the present invention.

[Fig. 2] Front view during cleaning according to the present invention

[Fig. 3] Front view during bond detection according to the present invention

[Explanation of symbols]

1 Board 4. Moving table 5　Cleaning liquid container 6 Nozzle 10 Cleaning liquid 12 Collection container 20 Bond 21 Syringe

Claims (1)

[Claims] Claim 1: A syringe in which a bond is stored is mounted on a moving table, and while the moving table is driven to move the syringe, air pressure is applied to the syringe, and the syringe is removably connected to the lower part of the syringe. from the nozzle
In a bond coating device that drips bond onto a substrate, a cleaning liquid storage container is attached to the movable table in place of the syringe, and the cleaning liquid in this container is discharged from the nozzle by applying air pressure to the cleaning liquid. A bond coating device characterized by being provided with a recovery container for recovering cleaning liquid.