JPH10207076A - Coating applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a coating applicator capable of uniformly applying a coating material by delivering the coating material of the atm. proportional to the moving distance of a moving section while moving the section along a coating surface, thereby applying the coating material on the surface. SOLUTION: This coating applicator is constituted by arranging a moving and coating applying means 20 within a main body 10. The movement of the moving section 21 is controlled by a rack gear 26 and a pinion gear 27. The descending of a piston 24 is controlled by a flat belt 29 and pulley 28 interlocking to the rack gear 26 and the pinion gear 27. Namely, the moving speed of the moving section 21 is determined by the number of revolutions of a motor and the pitches of the rack gear 26 and the pinion gear 27. The descending speed of the piston 24 is determined by the number of revolutions of the motor, the shaft diameter of a screw 30, the outside diameter of the pulley 28 and the pitches of the internal screw threads formed the inner periphery of the pulley and the external screw threads formed on the outer periphery of the piston 24. Then, the flux F to be applied on a substrate is proportional to the moving distance of the moving section 21 and, therefore, the amt. of the flux F to be coated per unit area is kept always constant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating apparatus for coating a coating material, for example, a coating apparatus for coating a surface of a substrate with a flux.

[0002]

2. Description of the Related Art Conventionally, as a device for applying a flux to the surface of a substrate, for example, there is a dispenser. When applying flux to the surface of a substrate using this dispenser, the flux is filled in the dispenser, and a predetermined amount of flux is supplied from a dispenser nozzle while the dispenser is manually moved on the surface of the substrate to apply the flux. .

[0003]

In the above-described dispenser, which is a conventional coating apparatus, it is difficult to uniformly apply the flux onto the substrate because the dispenser is moved and the flux is supplied manually. . Therefore, there has been a problem that the electrical characteristics of the substrate vary. Also, even if the flux supply is automatically controlled to keep the application amount per unit time constant, if the dispenser is moved manually, work variation occurs due to individual differences, and eventually the electrical characteristics of the board vary. There was a problem that occurs.

In order to solve this problem, the supply of flux is automatically controlled so that the amount of coating per unit time is controlled to be constant, and a mobile robot and a dispenser are combined to automatically move the dispenser. It is necessary to configure so that the moving amount per hit is controlled to be constant. However, since the mobile robot itself is expensive, there is a disadvantage that the coating device itself is very expensive.

[0005] In view of the above, an object of the present invention is to provide a coating apparatus capable of uniformly applying a coating material.

[0006]

According to the present invention, an object of the present invention is to provide a coating apparatus for applying a coating material, wherein the coating apparatus moves along a coating surface and the amount of the coating material is proportional to the moving distance. This is achieved by providing a moving / applying means for sending out and applying.

[0007] According to the above configuration, since the movement for application is proportional to the amount of the applied material, it is possible to always perform uniform application.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. The embodiments described below are preferred specific examples of the present invention,
Although various technically preferred limitations are given, the scope of the present invention is not limited to these forms unless otherwise specified in the following description.

FIG. 1 is a perspective view showing an embodiment of a coating apparatus according to the present invention, and FIGS. 2 and 3 are a sectional side view and a plan view of a main part thereof. The coating apparatus 1 includes a main body 10
The moving / applying means 20 is arranged in the inside. Support walls 12 and 13 are provided on both sides of the base 11 of the main body 10.
Is provided. At a substantially central portion of the surface of the rectangular pedestal 11, for example, a holding unit 1 for mounting and fixing the substrate S thereon
4 are provided. The holding portion 14 is configured by filling a rectangular concave portion having a constant depth provided on the surface of the base 11 with, for example, an adhesive resin. Guide rods 15, 16 for guiding the moving / applying means 20 in the horizontal direction are hung over the supporting walls 12, 13 each having a substantially C-shaped cross section.

A moving section 21 of the moving / applying means 20 has a coating section 22 for applying, for example, a flux F to the substrate S.
A drive unit 23 for moving the moving unit 21 and applying the coating unit 22 is provided. The moving part 21 is a rectangular parallelepiped casing, and guide rods 15 and 16 are mounted on both sides in parallel in a horizontal direction through thrust bearings, and a coating part 22 is mounted in a substantially central part in a vertical direction. The driving unit 23 is arranged at an upper portion on one side from the substantially central portion.

The application section 22 is composed of a cylinder 25 in which a piston 24 is built. The cylinder 25 is fixed by being screwed from below into a through hole formed in a substantially central part of the moving part 21 in a vertical direction. And piston 2
4 is inserted into the through hole from above and inserted into the cylinder 25. The driving unit 23 includes a rack gear 26 and a pinion gear 27 as a first mechanism, and a pulley 28 and a flat belt 29 as a second mechanism. Rack gear 26
Is fixed to one support wall 13 so that the longitudinal direction is parallel to the guide rod 16. The pinion gear 27 is supported on the upper part of one side of the moving part 21 via a screw 30 so as to mesh with the rack gear 26 and be rotatable.

The pulley 28 is supported by the moving part 21 via a sliding bearing above the through hole of the moving part 21. An internal thread is provided on the inner periphery of the pulley 28. Further, on the outer periphery of the piston 24, there is provided a male screw which is provided on the inner periphery of the pulley 28 and meshes with the screw. Therefore, the piston 24 is inserted into the cylinder 25 after being engaged with the pulley 28 once. The flat belt 29 is wound around the outer periphery of the pulley 28 and the screw 30. Here, as shown in FIG. 2, the screw 30 has a portion 30 a into which the pinion gear 27 can be fitted, and a flat belt 2.
A portion 30b having a groove in which the groove 9 is fitted is provided, and is rotatably supported by a motor 31 disposed in the moving portion 21.

An operation example of such a configuration will be described. In the initial state, the moving unit 21 is located at the back of the main body 10,
That is, it is assumed that the piston 24 is at the most advanced position in the direction of the arrow a in FIG. 1, and the piston 24 at this time is at the top dead center, that is, the position most pulled out in the direction of the arrow b in FIG. The cylinder 25 is filled with the flux F, and the holding unit 1
It is assumed that the substrate S is held on 4. In this state, the motor 31 is driven to rotate the pinion gear 27 in the direction of arrow c in FIG. 1, and the flat belt 29 is moved in the direction of arrow d in FIG. 1 to rotate the pulley 28 in the direction of arrow e in FIG. .

Then, the moving part 21 is provided with the guide rods 15 and 16.
Along with the arrow f in FIG. 1, and the piston 24 descends in the direction of arrow h in FIG. 1 while rotating in the direction of arrow g in FIG. Accordingly, the flux F in the cylinder 25 is pushed out from the open front end of the cylinder 25 by the piston 24 and is applied onto the substrate S. When the moving unit 21 reaches the front of the main body 10, that is, the most advanced position in the direction of arrow f in FIG.
Is removed from the holding unit 14, and the motor 31 is driven in the reverse rotation to bring it to the initial state. Then, the processing described above is repeated for a new substrate S.

As described above, the movement of the moving section 21 is controlled by the rack gear 26 and the pinion gear 27, and the lowering of the piston 24 is controlled by the flat belt 29 and the pulley 28 interlocked with the rack gear 26 and the pinion gear 27. The moving amount of the part 21 and the descending amount of the piston 24 are always constant. That is, the moving speed of the moving unit 21 depends on the rotation speed of the motor 31 and the rack gear 26 and the pinion gear 2.
7, the lowering speed of the piston 24 is provided at the rotation speed of the motor 31, the shaft diameter of the screw 31, the outer diameter of the pulley 28, and the inner circumference of the pulley 28. It is determined by the pitch of the screw.
Therefore, since the flux F applied to the substrate S is proportional to the moving distance of the moving unit 21, the applied amount of the flux F per unit area of the substrate S is always constant.

The rotation speed of the motor 31 and the rack gear 26
And the pitch of the pinion gear 27, the shaft diameter of the screw 31 and the outer diameter of the pulley 28, the pitch of the screw provided on the inner circumference of the pulley 28 and the pitch of the male screw provided on the outer circumference of the piston 24, or the inner diameter of the cylinder 25 as appropriate. By doing so, the amount of the flux F applied on the substrate S can be changed. Further, instead of the pulley 28 and the flat belt 29, a rotation transmitting means such as a toothed belt, a chain, and a gear mechanism may be used, and the accuracy of the amount of the flux F applied on the substrate S can be further improved. .

[0017]

As described above, according to the present invention, the coating material can be applied uniformly.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a coating apparatus of the present invention.

FIG. 2 is a sectional side view of a main part of the coating apparatus shown in FIG.

FIG. 3 is a plan view of a main part of the coating apparatus shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Coating device, 11 ... Pedestal, 12, 13 ...
Support wall, 14: holding section, 15, 16: guide rod, 20: moving / applying means, 21: moving section, 2
2 ... coating part, 23 ... drive part, 24 ... piston, 25 ... cylinder, 26 ... rack gear, 27
... Pinion gear, 28 ... Pulley, 29 ... Flat belt, 30 ... Screw, 31 ... Motor, S ...
Substrate, F ... flux

Claims (5)

[Claims] 1. A coating device for coating a coating material, comprising a moving / coating means for moving the coating material along an application surface and sending and applying an amount of the coating material in proportion to the moving distance. A coating device characterized by the above-mentioned. 2. An application device for applying an application material, wherein the application unit accommodates and applies the application material, a moving unit that moves along with the application unit along an application surface, and moves the moving unit. And a drive unit for sending the coating material from the coating unit in conjunction with the movement of the moving unit. 3. The application unit according to claim 2, wherein the application unit includes a cylinder that stores the application material, and a piston that pushes out the application material while rotating in a circumferential direction in the cylinder and moving straight in an axial direction. Coating device. 4. The drive unit according to claim 3, wherein the drive unit includes a first mechanism for moving the moving unit, and a second mechanism for rotating and moving the piston straight in conjunction with the first mechanism. Coating equipment. 5. The coating apparatus according to claim 2, wherein the moving unit moves along a guide rod spanned along the coating surface.