JPH0239937A - Viscous substance emitting apparatus - Google Patents

Abstract

PURPOSE:To emit a viscous substance to a base plate uniformly at a high speed and to also emit many kinds of viscous substances by the same machine without stopping said machine by mounting a control part for bringing a nozzle into contact with the base plate and separating the same therefrom and capable of controlling force and moving a table in a predetermined direction. CONSTITUTION:A control part 13 selects a nozzle 7a and the pressure pushing a housing 9 is set and ordered so as to push the nozzle 7a to a base plate 13 under set pressure. The emission of a viscous substance in a forward direction is finished and an order is issued so that the nozzle 7a having performed emission previously is separated from the base plate 7a to be moved upwardly and, at the same time, a command is issued for a nozzle 7d to move downwardly, in the same way as the nozzle 7a is moved downwardly, to be brought into contact with the base plate 13. During this time, a table 14 is separated from the nozzle 7a and, at the same time, before the nozzle 7d is brought into contact with the base plate 13, said table 14 is moved so that the viscous substance start position in the right direction of the base plate 13 comes to the part directly under the nozzle 7d. When the nozzle 7d is brought into contact with the substrate 13, emission is performed simultaneously with the emission of the viscous substance of the nozzle 7a.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a viscous substance dispensing device for forming electronic circuits.

BACKGROUND OF THE INVENTION A conventional viscous substance dispensing device of this type has a structure as shown in FIG. That is, the viscous substance dispensing nozzle /L/2, which is integrated with the viscous substance tank attached to the bottom of the table 1 which can be moved vertically, horizontally and rotatably, is moved, and the spring 6 is moved.
A viscous substance is applied onto a substrate 3 fixed on a table 4 supported by.

Problems to be Solved by the Invention However, in such a structure, the nozzle/L/2 is large and heavy, and therefore the load on the table 1 is large. For this reason, the tape /L'1 becomes larger, the load on the table drive section becomes larger, and the table movement speed becomes slower.

If the viscous substance application path becomes discontinuous, the nozzle /L/2 is raised once, set to the next application position, and the nozzle 2 is lowered again to start application. When changing the coating direction, raise the nozzle once, set it to the next coating direction, lower the nozzle/I/2 again, and start coating. However, when the nozzle 2 is in the lowered state, pressure is applied to the substrate 3 by the lower part of the nozzle 2. For this reason, table 4
Pressure is also transmitted to the spring 5 through the spring 5, and the spring 5 is in a compressed state.

At this time, when the nozzle 2 is raised, the spring 5 begins to vibrate.

Also, when lowering the nozzle 2, the spring 3 contracts at the same time as the nozzle 2 contacts the substrate 3, so if the contact speed is fast,
Spring 3 begins to vibrate. However, if the viscous substance is applied while the spring 3 is vibrating, uneven application will occur. Therefore, there is a limit to the speed of a series of vertical movements of the nozzle 2.

Furthermore, when changing the width of dispensing viscous material or the type of viscous material, it is necessary to change the nozzle 2, so it is impossible to dispense various types of viscous materials without stopping the same machine. be.

In view of the above-mentioned problems, the present invention is intended to uniformly apply a viscous substance to a substrate at high speed, and to enable application of various types of viscous substances without stopping the same machine.

Means for Solving the Problems In order to solve the above problems, the present invention provides a head section having at least two or more nozzles that can move up and down and can apply a viscous substance onto a substrate. Select a predetermined nozzle from , move the selected nozzle up and down,
The nozzle is brought into contact with and removed from the substrate, and includes a control section capable of controlling the force and moving the table in a predetermined direction.

For production The effect of this technical means is as follows.

In other words, when applying a viscous substance to a substrate, depending on the type of viscous substance required, the application width of the viscous substance, and the application direction,
The control unit selects a nozzle and issues a command to move the nozzle downward. After the nozzle contacts the substrate, the nozzle's pressure on the substrate is commanded to the required pressure.

In addition, when dispensing the viscous substance is finished, when the dispensing path of the viscous substance on the substrate becomes discontinuous, when the dispensing direction is different, when the dispensing width is different, or when the type of viscous substance is different. moves the nozzle upward and ends the operation or switches to another nozzle. At this time, the control unit issues a command to raise the nozzle as fast as possible, and when switching the nozzle, the switched nozzle moves downward, spreads the viscous substance, and moves upward in the same manner as above. A series of movements can be performed.

As a result, since the moment of inertia is small, the nozzle can be moved up and down at high speed. Further, even if the speed of vertical movement of the nozzle is increased, vibrations do not occur on the table side and the nozzle side, so it is possible to increase the speed of dispensing the viscous substance.

In addition, by using multiple nozzles according to various conditions, -
This makes it possible to apply a wide variety of viscous substances without having to stop the machine.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

In FIG. 1, reference numeral 13 denotes a substrate, which is mounted on a table portion 14 that is movable in a plane. Above the substrate 13, there are a plurality of nozzles 7 having different directions of applying viscous substances, widths of application, and types of viscous substances. - For example, 7& can be applied in the forward direction, the application width of the viscous substance is A, and the type of viscous substance is E. 7b can be coated in the right direction, has a coating width of A, and has a type of viscous substance of E. 7C can be painted in the forward direction and has a painting width of B.
The type of viscous substance is E. 7d can be coated in the right direction, has a coating width of B, and has a type of viscous substance of E. It is also possible to attach a plurality of other nozzles. Each nozzle 7 is attached to a housing 9 via a lever 8.

Further, the housing 9 is attached to a shaft 11 fixedly attached to the casing 12 so as to be freely rotatable. Further, a cylinder 1o is attached to the housing 12 and serves as a driving source for moving the nozzle 7, and a movable portion of the cylinder 1° is connected to the housing 9. Further, a control section 16 that controls these cylinders 9 is provided.

Further, the viscous substance is supplied from the pipe 16 to the nozzle/L/7. Next, the operation of the configuration of this embodiment will be explained. First, a case where the viscous substance E is applied in the forward direction with the application width A when all the nozzles 7 are apart from the substrate 13 and above the substrate 7 will be described.

In this case, the control unit 13 selects the nozzle 7a and selects the nozzle 7a.
A command is given to the cylinder 10 of a to increase its stroke.

At this time, until the nozzle 7a comes into contact with the substrate 13, the cylinder 10 increases its stroke at the fastest possible speed.
When contacting the substrate 13, the speed is made as close to 0 as possible,
The pressure to press the housing 9 is set and commanded so that the nozzle 7a can press the substrate 13 with a set pressure. Furthermore, before the nozzle 7a comes into contact with the substrate 13, the tape/L/14 is instructed to move so that the coating start position of the substrate 13 is directly below the nozzle 7a.

When the nozzle 7a comes into contact with the substrate 13, the nozzle 7a starts applying the viscous substance, and the viscous substance is supplied from the pipe 15.

Further, the table 14 moves forward so that the viscous substance applied from the nozzle 7a is applied onto the required path of the substrate. When the coating is finished, the nozzle 7a is commanded to stop coating and the table 14 is commanded to stop moving.

A case will be described in which the application of the viscous substance in the forward direction is completed, and then the viscous substance E is applied in the right direction with the application width B.

In this case, the nozzle /1z7a that was previously dispensing is commanded to move upward away from the substrate, and at the same time nozzle 7a
d, the nozzle 7a is commanded to move downward and come into contact with the substrate 13, similar to the case where the nozzle 7a moves downward.

During this time, the table 14 moves so that the starting position of the viscous substance in the right direction of the substrate 13 is directly below the nozzle /I/7d until the nozzle 7d comes into contact with the substrate 13 at the same time as the nozzle 7a leaves. When the nozzle 7d comes into contact with the substrate 13, application is performed in the same manner as the application of the viscous substance by the nozzle 7d. This series of operations is performed in the same manner thereafter.

Furthermore, when these series of operations are completed, the control unit 13 controls the nozzles 7 so that they are all separated from the substrate.
Cylinder part 1o is commanded to reduce its stroke.

With the above configuration, the following effects can be obtained. In other words, by making the nozzle 7 smaller and having a wider range of sizes, the moment of inertia of the nozzle 7 becomes smaller and the space required becomes smaller, so that many nozzles can be installed. Also nozzle 7
By controlling the force using the control unit 16 so that the nozzle 7 does not vibrate on the substrate 13, the table 14 can be moved in a plane at high speed, and the tact time for dispensing the viscous substance can be increased.

Furthermore, the nozzle 7 is equipped with multiple nozzles that can be applied to various types of viscous substances, eliminating the need to replace nozzles depending on the type of viscous substance being applied. It is possible to apply substances.

In the first embodiment, the driving source includes a cylinder 10.
However, similar effects can be obtained if the force can be controlled by the control unit 16. Further, although the table 14 is used as a side support for the substrate, the same effect can be obtained as long as it is movable in a plane.

Next, other embodiments of the present invention will be described. FIG. 5 shows another embodiment, in which 28 is a substrate mounted on a table portion 29 which is movable in a plane. Above the substrate 28, there are a plurality of nozzles 27 for different types of viscous substances.

Each of the nozzles/V 27 is attached to the housing 24 via a lever 25. Further, the housing 24 is attached to a shaft 18 fixedly attached to the fixed casing 17 so as to be freely rotatable. Furthermore, a block 23 to which the movable part of the linear motor 22 is attached is fixedly attached to the housing 24. Further, a fixed portion of the linear motor 22 is attached to the upper part of the frame 21, which is rotatably attached to the shaft 18. The moving frame 21 includes a driving lever 2.
0 is attached and is in contact with the cam 19.

The driving sources for the linear motor and the cam are controlled by a control section 30. Further, the viscous substance is supplied to the nozzle 27 from the pipe 26.

Next, the operation of the configuration of this embodiment will be explained. First, a case will be described in which a viscous material is applied by the nozzles 1v27a when all the nozzles 27 are located above the substrate 28 away from the substrate 2.

In this case, first, the cam 19 rotates until the nozzle/v27a contacts the substrate 28 to apply displacement. When the tab and cam 19 apply displacement, the frame 21 is displaced, and the nozzle 27a is also displaced via the linear motor 22. Then, the nozzle 27a
8, the linear motor 22 controls the force and absorbs the impact, and the nozzle 27a applies a constant pressure to the substrate 28. At this time, the nozzle starts applying the viscous substance sent from the pipe 26. On the other hand, when the nozzle 27a comes into contact with the substrate 28, the table 29 moves the viscous substance application start point of the substrate 28 directly below the nozzle 27a, moves in a predetermined direction after the nozzle 27a makes contact with the nozzle 27a, and starts operating after moving a predetermined distance. finish. Application of the viscous substance from the nozzle 27a also ends at this time. When the application of the viscous substance is completed, the cam is then rotated and a predetermined displacement is applied to lift the nozzle/l/27a away from the substrate. Thereafter, a series of operations can be performed in the same manner as in the first embodiment.

With this configuration, effects similar to those of the first embodiment can be obtained.

Effects of the Invention As described above, according to the present invention, by providing a control section that can bring the nozzle into contact with and release from the substrate, control the force, and move the table in a predetermined direction, it is possible to control the pressure,
Since it is possible to prevent the nozzle from vibrating on the substrate, it is possible to move the table side in a plane at high speed, and it is possible to make the tact time for dispensing the viscous substance faster than before.

In addition, by providing one nozzle that can apply in one direction and the other that can apply in a direction perpendicular to the one direction, one nozzle can be rotated 90' to correspond to the application direction. This eliminates the need for this, and the tact time for dispensing viscous substances can be made faster than before.

Furthermore, by having multiple nozzles with different dispensing widths, multiple nozzles with different qualities of viscous substances, or multiple nozzles with both, it is possible to produce a wide variety of products without having to stop the machine. It is possible to apply viscous substances.

In addition, by having a nozzle drive source that can adjust the contact pressure and keep the pressure constant when the nozzle contacts the substrate, the nozzle always makes contact with a constant pressure regardless of the condition of the substrate. , it is possible to apply evenly.

Finally, by separating the paste tank and nozzle, the nozzle part can be made smaller and lighter, and the moment of inertia in the nozzle part is reduced, making it possible to drive the nozzle at higher speed than before. It becomes possible.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a viscous substance dispensing device according to an embodiment of the present invention, Fig. 2 is a plan view of a nozzle and a substrate, Fig. 3 is a plan view of a plurality of nozzles and a substrate, and Fig. 4 is a plan view of a nozzle. A flowchart of the operation, FIG. 6 is a perspective view of another embodiment of the present invention,
FIG. 6 is a schematic plan view of a conventional viscous substance application device. 2...Nozzle with tank? a, 7b, 7c. 7d, 27&, 27b, 270--Nozzle, 3113, 28...Substrate, 4, 14.29
......Table, 16.30...Control unit, 5...Spring, 1o...Cylinder, 2
2...Linear motor, 6,15°26...
··Piping. Name of agent, patent attorney Shigetaka Awano and one other person

Claims (6)

[Claims] (1) A head section that is movable up and down and has at least two or more nozzles capable of applying a viscous substance onto a substrate, a predetermined nozzle is selected from the plurality of nozzles of this head section, and the selected nozzle is moved up and down. A viscous substance dispensing device comprising: a control unit capable of moving the nozzle into and out of contact with a substrate, controlling force, and moving the table in a predetermined direction. (2) One of the nozzles is capable of dispensing in one direction, and the other is capable of dispensing in a direction perpendicular to the one direction. Device. (3) The viscous substance application device according to claim 1, characterized in that it has a plurality of nozzles with different application widths. (4) The viscous substance application device according to claim 1, characterized in that it has a plurality of nozzles for different types of viscous substances. (5) A viscous substance coating according to claim 1, characterized in that the nozzle has a nozzle drive source that can adjust the contact pressure and keep the pressure constant when the nozzle contacts the substrate. Output device. (6) The viscous substance application device according to claim 1, wherein the paste tank and the nozzle are separated.