JPS62163767A - Adhesive coating device - Google Patents

Abstract

PURPOSE:To obtain the titled simplified and inexpensive device by unidirectionally positioning plural printed boards, and positioning a coating head in the direction normal to the positional direction of the printed board. CONSTITUTION:The two left and light printed board 1 and 1' are placed on a table 2 which is held by the first driving part 3. The first driving part 3 is fixed on a pedestal 4. An adhesive tank 5 and shafts 7 and 7' for holding a coating nozzle 6 are arranged at the same pitch as the pit strings of the printed boards 1 and 1', and held by a coating head 8. The coating head 8 is held by the second driving part 9, and the second driving part 9 is fixed on the pedestal 4 through a support arm 10. The table 2 holds a couple of opposite edges of the printed boards 1 and 1'.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an adhesive coating device used when attaching minute electronic components to an electronic circuit board.

BACKGROUND ART A conventional technique will be explained with reference to the drawings. FIG. 9 is an overall conceptual diagram of an example of the conventional technique. Printed circuit board 10
1 is held on an XY table 102, positioned at an arbitrary position on the printed circuit board, and coated with adhesive by a coating head 103. 104 is a printed circuit board 10
A loader for carrying 1 to the XY table 102, 10
5 is an unloader for unloading the printed circuit board 101. 106 is a drive unit that moves the loader 104 up and down;
Reference numeral 107 is a small moving part that moves the unloader up and down.

FIG. 10 is a plan view of a conventional example. 108 is the movable range of the XY table. The area occupied by the movable range 108 of the XY table must be at least four times the area of a certain printed board 1010 that can be held. In order to avoid interference with the movable range 108 of the XY table 102, the loader 104 and unloader 105 are operated by the drive unit 1 while the XY table 102 is in operation.
06 and 107 to move upward.

FIG. 11 is a sectional view of a conventional adhesive storage tank.

Since the shaft 109 and the tank 110 partially have a pedestal portion, mutual positioning is performed. In order to prevent the tank 110 from falling, a holder 111 having a threaded portion on a part of its inner edge is tightened onto the shirt 109. Adhesive 11
2 is stored in the tank 110, air is supplied from an unillustrated air discharge device through a path 113 in the shaft 109, and the adhesive 112 is dripped from a nozzle 114.

Problems to be Solved by the Invention As mentioned above, in the conventional technology, an area four times or more of the printed circuit board is required to ensure the movable range of the XY table, which limits the miniaturization of the entire device. When applying adhesive to multiple printed circuit boards at the same time in order to increase adhesive application ability, the XY table and movable range inevitably become larger because multiple printed circuit boards are held on the XY table at the same time. Therefore, the entire device becomes larger.

However, the loader and unloader must be moved up and down to avoid interference with the XY table, and a driving section is required, making the apparatus complicated.

Furthermore, when replenishing the adhesive in the adhesive storage tank, loosen the holder to separate the shaft and tank.
The disadvantage was that the shaft and tank had to be separated and reassembled after replenishment, which was time-consuming.

Means for Solving the Problems In order to solve the problems of the conventional art, the present invention includes a table section for simultaneously holding a plurality of printed circuit boards at predetermined intervals, and a plurality of table sections arranged at intervals corresponding to each of the printed circuit boards. a coating head section having an adhesive coating nozzle; a first driving section for moving the table section to an arbitrary position in a direction orthogonal to the loading and unloading direction of the printed circuit board; It is characterized in that it has a second drive unit that moves it to an arbitrary position in a direction perpendicular to the moving direction.

Further, in the adhesive storage tank, there is provided a nozzle having a disk having a circular outer edge and a shape with a part of the circle missing; The present invention is characterized in that it is comprised of an outer cylinder having a cylindrical shape, and a tank whose one end engages with the nozzle and whose other end contacts the outer cylinder.

Function: In this way, the table that holds the printed circuit board must be positioned only in one direction, and the coating head must be positioned only in the direction perpendicular to the direction of movement of the table section. It can be made twice as small, making it possible to downsize the device. Furthermore, the moving direction of the table is orthogonal to the loading and unloading direction of the printed circuit board, so that there is no interference with the loader and unloader for loading and unloading the printed circuit board, and a drive unit that moves the loader and unloader up and down. This eliminates the need for the device, making it possible to simplify and reduce the cost of the device.

Furthermore, since the nozzle and the outer cylinder are uncoupled by rotating the nozzle and forming a non-coupled portion, it is possible to replace the tank holding the adhesive very easily.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a plan view and a side view of the embodiment. 2
A table 2 on which printed circuit boards 1 and 1' are placed side by side in the left and right sides of the figure is held by a first drive unit 3. The first drive section 3 is fixed to the base 4. Shirts 7 and 7' holding the adhesive tank 5 and the coating nozzle 6 are arranged at the same pitch as the printed circuit board 1.1' and are held by the coating head 8. The coating head 8 is held by a second drive section 9, and the second drive section 9 is fixed to the base 4 via a support arm 1°.

The table 2 includes a printed circuit board 1.1' as shown in FIG.
It is a support bin (
(not shown) is built-in. FIG. 3 is a side view of the table 2. 11 is a belt that holds the side edge of the printed circuit board 1, and the side edge of the printed circuit board 1 and the belt 11
is held on the rail 12. Belt 11 is pulley 1
3 and is driven by a motor 14, which transports the printed circuit board 1.1' from the right to the left in FIG. 2. 15 and 15' are stoppers, and the printed circuit boards 1,
1', positioning is performed to stop at a partial pitch during conveyance. The stopper 15 has a cylindrical structure,
The piston 16 protrudes only when positioning the printed circuit board 1.

The coating head 8 is connected to the printed circuit board 1. as shown in FIG.
Adhesive tanks 5 and nozzles 6 are arranged at the same pitch as 1'. The adhesive tank 6 and nozzle 6 are fixed to the shaft 7. The shaft 7 has a bush 1 that can be moved up and down and rotated.
It is held in the coating head main body 18 via 7. The roller guide 19 is fixed to the shaft 7, and is driven by a cylinder 23 via a cam follower 2o engaged with the roller guide 19, a lever 21, and a joint 22, so that the shaft 7 partially moves up and down in its stroke. Reference numeral 24 denotes a pulley, which is held on the application head body via a rotation bearing (not shown) so that its rotation axis coincides with the rotation axis of the shaft 7. The pulley 24 is driven by a pulse motor 26 via a belt 26 to perform rotational movement. A rod 27 is fixed to the pulley 24 and rotates the shaft 7 via a bush 28 and a bar 29. The bar 29 is fixed to the shaft 7 and holds the bushing 28.
Since the bush 28 and the rod 27 slide, the shaft 7
Transmission of rotational drive is possible even when moving up and down. Air at a constant pressure is supplied to the adhesive tank 5 from a compressed air supply device (not shown) through a hose 30 for a certain period of time, and the adhesive in the adhesive tank is dispensed from the nozzle 6 in a constant amount.

Since the structures of the first drive section 3 and the second drive section 9 are completely the same, only the first drive section will be explained using FIG. 5. The fifth diagram is a plan view of the first drive section, and the one in Figure 6 is also its S-S.
FIG. The slider 31 moves in the left-right direction in the figure and is guided by a guide rail 32. The slider 31 is driven by a ball screw 34 directly connected to the motor 33 and a nut 367% fixed to the slider 31.
This is done using a feed screw mechanism. The table 2 or the coating head 8 is fixed to the slider 31.

The details of the adhesive storage tank will be explained using FIG. 6, which is an external view thereof, and FIG. 7, which is a sectional view thereof. An outer cylinder 37 is fixed to a flange 36 press-fitted into the shaft 7 with bolts 38. A part of the nozzle 39 is held by the outer cylinder 37 by fitting. The plunger 40 is fixed to the outer cylinder 37 and urges the periphery of the nozzle 390. tank 41
The lower end is held by fitting with three nozzles, and the upper end is in contact with the flange 36 via a ring 42.

The process of attaching and detaching the outer cylinder 37 and the nozzle 39 will be explained using FIG. 8. FIG. 8 is a sectional view taken along the line TT in FIG. 7. Outer cylinder 3
The inner wall of the nozzle 7 and the outer edge of the nozzle 39 are fitted together. The outer edge of the nozzle 39 is circular, but the shape is such that a part of the circle is missing. A V-groove is provided in the circular portion, and the plunger 40 biases this. The stopper 43 restricts the direction of rotation of the nozzle 39. Parts of the inner and outer walls of the outer cylinder 37 are penetrated and open. ) in FIG. 8, by rotating the nozzle 39 in the direction of arrow A, the nozzle 39 and the outer cylinder 3 are disengaged, and the nozzle 39 is separated. Attaching the nozzle 39 involves reversing the above steps.

By separating the nozzle 39, the tank 41 can be connected to the outer cylinder 3.
7, and the adhesive 44 can be replenished.

Effects of the Invention According to the present invention, since a plurality of printed circuit boards are positioned in one direction and the coating head is positioned in a direction perpendicular to the direction in which the printed circuit boards are positioned, the apparatus can be made smaller, simpler, and more economical. It becomes possible to provide a space-saving and low-cost adhesive application device. Furthermore, since the nozzle and tank can be attached and detached extremely easily in the adhesive storage tank section, it has become possible to significantly shorten the time required to replenish adhesive.

[Brief explanation of drawings]

The first diagram is a plan view of an adhesive applicator according to an embodiment of the present invention, FIG. 1 (B) is a side view of the same, FIG. 2 is a plan view of the table part, and FIG. Figure 4 is a cross-sectional view of the coating head section, Figure 5 is a plan view of the first drive section, Figure 5 (B) is a cross-sectional view taken along line S-8 in frame 6 (GA), Figure 6 is a perspective view of the same adhesive storage tank, Figure 7 is a sectional view of the same, Figures 8 (A) and (B) are the same sectional view taken along the line T-T in Figure 7, and Figure 9. 1 is a perspective view of a conventional adhesive application device, FIG. 1Q is a plan view thereof, and FIG. 11 is a sectional view of the same adhesive storage device. DESCRIPTION OF SYMBOLS 1... Printed circuit board, 2... Table part, 3... First drive part, 4... Base,
5...Adhesive tank, 8...Applying head, 9...Second. Drive unit, 10...Support arm, 37...Outer cylinder, 39...Nozzle, 41...Tank, 44...Adhesive . Name of agent: Patent attorney Toshio Nakao and 1 other person
1 figure
2---Chi 7・Lu evil 3-Leopard JAb Shu 5---Ph, t'PJ Gunfu (ha)
δ-1 City Hege Figure 2 Figure 4 Figure 5 (A+ (shi Figure 9)

Claims (2)

[Claims] (1) An apparatus for applying adhesive for fixing electronic components onto a printed circuit board, which includes a table section that simultaneously holds a plurality of printed circuit boards at predetermined intervals, and a plurality of table sections arranged at intervals corresponding to each of the printed circuit boards. a coating head section having an adhesive coating nozzle; a first driving section for moving the table section to an arbitrary position in a direction perpendicular to the loading and unloading direction of the printed circuit board; An adhesive applicator comprising a second drive unit that moves to an arbitrary position in a direction perpendicular to the moving direction. (2) The coating head includes a nozzle that has a disk with a circular outer edge and a part of the circle is missing, and an inner wall that is circular and engages with the outer edge of the disk of the nozzle, and penetrates a portion of the inner and outer walls. 2. The adhesive applicator according to claim 1, further comprising an adhesive storage tank portion comprising an outer cylinder having a section, and a tank having one end engaged with the nozzle and the other end contacting the outer cylinder.