JPH098499A - Printed circuit board suction base - Google Patents

Abstract

(57) [Abstract] [Purpose] The vacuum suction of the printed circuit board is ensured by freely selecting the position, size, and number of suction holes, cream solder printing is performed with high accuracy, and reliability is further improved. The number of hoses used for is reduced to one to simplify the structure, and whenever the type of the printed circuit board changes, a suction plate suitable for the type is replaced and the setup is easily performed. [Structure] A plurality of suction holes 1 for sucking a printed circuit board,
Backup unit 2 that supports the printed circuit board together with the suction surface
A suction plate 4 having a counterbore 3 for avoiding parts of the printed circuit board, a suction communication part 5 communicating with each suction hole 1 of the suction plate 4, and a vacuum exhaust device connected to the suction communication part 5. The base plate 8 has a connecting hole 7 connected to the base plate 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board suction base used in a cream solder printing machine.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional printed circuit board suction base.
It is an explanatory perspective view showing an example. The conventional printed circuit board suction pedestal is used when the printed circuit board is sucked and fixed for cream solder printing, and a large number of backup pin fixing holes 9 are provided in the suction plate 4, and desired fixing holes of these fixing holes 9 are provided. Select it, insert the backup pin 10 having the suction hole 1 into it, and fix it.
0 is connected to the vacuum pump 6 via a hose 11.

[0003]

The above-mentioned conventional example uses the backup pin 10 which has the suction hole for sucking the printed circuit board and also serves as the contact prevention in order to prevent the component of the printed circuit board from hitting. The vacuum pump 6 is attached to the suction hole 1 of the backup pin 10 of the printed circuit board via the hose 11.
Although the vacuum suction is performed by, the pitch of the fixing holes 9 for fixing the backup pin 10 is fixed, and there is no degree of freedom in the position of the backup pin, so it is not possible to freely select the suction position, and vacuum suction is ensured. Can not be done.
Therefore, cream solder printing cannot be performed with high accuracy, and reliability is reduced. Further, since the hose 11 is used by the number of the backup pins 10 used, the structure is complicated, and the fixing position of the backup pin 10 is changed every time the type of the printed circuit board is changed to connect the pins 10 and the hose 11. However, there is a problem that it requires time and effort for setup.

[0004]

In order to solve the above-mentioned problems, the printed circuit board suction base of the present invention includes a plurality of suction holes 1 for sucking the printed circuit board and a printed circuit board as shown in FIGS. The backup unit 2 that supports with the suction surface,
A suction plate 4 having a counterbore 3 for preventing contact with parts of the printed circuit board, a suction communication portion 5 communicating with each suction hole 1 of the suction plate 4, and a vacuum exhaust device 6 connected to the suction communication portion 5 It is characterized by comprising a base plate 8 having a connecting hole 7 to be connected.

[0005]

[Operation] With such a structure, when the suction plate 4 is attached to the base plate 8 and the vacuum exhaust device 6 is operated, the printed circuit board is supported by the suction surface and the backup unit 2, and the parts are prevented from hitting counterbore. In the state of being avoided inside 3, the vacuum suction device 6 vacuum-sucks each suction hole 1 of the suction plate 4 through the communicating portion 5 and the connecting hole 7.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first embodiment of a printed circuit board suction base of the present invention.
It is a partial exploded perspective view showing an example. In this first embodiment, four suction holes 1 provided at four corners for sucking the printed circuit board, four backup units 2 each for supporting the printed circuit board together with the suction surface, and a component of the printed circuit board are provided. A suction plate 4 having counterbore holes 3 for preventing hitting,
A suction H-shaped groove 5 communicating with each suction hole 1 of the suction plate 4.
And a base plate 8 having a connecting hole 7 connected to the H-shaped groove 5 and connected to the vacuum pump 6 by a hose 11. In addition, 12 and 13 are screw holes provided in the suction plate 4 and the base plate 8, respectively.

Since the first embodiment is constructed as described above, when the suction plate 4 is attached to the base plate 8 with screws using the screw holes 12 and 13, and the vacuum pump 6 is operated, the printed circuit board is sucked. Supported by the surface and the backup unit 2,
The vacuum pump 6 passes through each suction hole 1 of the suction plate 4 through the suction H-shaped groove 5, the connecting hole 7 and the hose 11 in a state where the component does not hit the suction surface and is avoided in the hit prevention counterbore hole 3. It will be vacuum-adsorbed.

FIG. 2 is a partially exploded perspective view showing the second embodiment. In this second embodiment, six suction holes 1 are added to the first embodiment of FIG. 1, and suction counterbore 5 is used instead of the H-shaped groove as a suction communication portion that communicates each suction hole 1. An example is shown. In the first and second embodiments described above, since the suction holes 1 can be provided at any position, at any size, and the number thereof can be increased or decreased, vacuum suction can be ensured and cream solder printing can be performed with high efficiency. By providing the suction H-shaped groove or counterbore 5 communicating with each suction hole 1 and the connecting hole 7 connected to this, which can be performed with high accuracy and reliability, one hose 11 is provided in this connecting hole 7. All you have to do is connect them, and the structure becomes simple. Also, every time the type of the printed circuit board changes, the suction plate 4 suitable for the printed circuit board is replaced and the setup can be simplified.

[0009]

As described above, according to the present invention, the vacuum suction of the printed circuit board can be ensured by freely selecting the position, size and number of the suction holes, and cream solder printing can be performed with high accuracy and reliability. It is possible to improve the property. In addition, the number of hoses used for suction can be reduced to one and the structure can be simplified, and each time the type of printed circuit board changes, a suction plate suitable for the type can be replaced to facilitate setup. it can.

[Brief description of drawings]

FIG. 1 is a partially exploded perspective view showing a first embodiment of a printed circuit board suction pedestal of the present invention.

FIG. 2 is a partially exploded perspective view showing a second embodiment.

FIG. 3 is an explanatory perspective view showing an example of a conventional printed circuit board suction base.

[Explanation of symbols]

 1 Adsorption hole 2 Backup part 3 Countermeasure counterbore (hole) 4 Adsorption plate 5 Adsorption communication part (H-shaped groove, counterbore) 6 Vacuum exhaust device (vacuum pump) 7 Connection hole 8 Base plate 9 Backup pin fixing hole 10 Backup Pin 11 Hose 12 Screw hole 13 Screw hole

Claims (1)

[Claims] 1. A plurality of suction holes for sucking a printed circuit board, a backup portion for supporting the printed circuit board together with a suction surface, a suction plate having a countersink for avoiding parts of the printed circuit board, and each suction hole of the suction plate. 1. A printed circuit board suction pedestal, comprising: a suction communication portion that communicates with the suction suction communication portion;