JP5189002B2 - Flux printing on board and solder ball mounting device - Google Patents

Description

  The present invention relates to a flux printing on a substrate and a solder ball mounting apparatus.

  Conventionally, the printing of the flux on the substrate and the mounting of the solder balls on the flux printing portion of the substrate have been performed with separate apparatuses. In other words, the flux printing apparatus on the substrate is composed of a screen mask and a squeegee and a substrate support table, and the solder ball mounting device on the printed portion of the flux on the substrate comprises a screen mask and solder ball supply means. And a substrate support table.

  Since these are independent processing devices and are not linked to each other, after the printing of the flux on the substrate by the printing device is completed, the printed substrate is transported to the solder ball mounting device in the next process, where soldering is performed. The ball is mounted.

  By the way, both when the flux is printed on the substrate and when the solder balls are mounted on the portion where the flux is printed on the substrate, it is necessary to match the horizontal position and angle of the substrate with respect to the screen mask. This alignment is first performed on the substrate conveyed on the support table. The substrate is held on the upper surface of the substrate support table so that the substrate does not come off when the alignment is completed.

  However, since the flux printing device and the solder ball mounting device are completely different from each other as described above, when the printed board is conveyed to the solder ball mounting device after the printing by the flux printing device is completed, However, it is necessary to newly align the substrate with the screen mask. Therefore, this loss time has had a great influence on the overall work efficiency.

  The present invention has been made in view of the above points, and the flux printing device and the solder ball mounting device are arranged close to each other, and two units alternately go back and forth below these screen masks. Provides a board for flux printing and solder ball mounting so that the substrate support table is arranged so that the substrate can be aligned with the screen mask only once when the board is conveyed to the flux printing apparatus. It is something to try.

Thus, the gist of the present invention is that the squeegee is moved on the screen mask and the flux placed on the screen mask is applied to a predetermined position of the substrate through the mask hole, and the ball on the screen mask. The supply means is moved, and the solder ball mounting device for mounting the solder ball placed on the screen mask on the flux application portion of the substrate through the mask hole is placed close to each other, the screen mask in the flux printing device, and the solder Below the screen mask in the ball mounting apparatus, a substrate support table that is movable in the X direction between the screen masks and also in the Y direction and the Z direction is provided at the center of the screen mask in the flux printing apparatus. And the solder Line of scissors and operation start position connecting the center of the screen mask is set to be on the other side arranged in Lumpur mounting device, without so these two sets of the substrate support table is operated synchronously, the substrate An apparatus for flux printing on a substrate and a solder ball mounting device is characterized in that the positioning with respect to the screen mask can be performed only once when the substrate is conveyed to the flux printing apparatus.

In the above structure, the moving mechanism of the substrate support table, a support base which is disposed along a line connecting the center of the screen mask that put in the center and the solder ball mounting apparatus of the screen mask in the flux printing apparatus, the support An X-direction moving mechanism having an X-direction moving table that slides on the upper surface of the table and has a screw member attached to the lower surface, and a screw shaft that engages the screw member of the X-direction moving table and rotates the motor as a drive source. The Y-direction moving table, which slides the upper surface of the X-direction moving table in a direction perpendicular to the X-direction moving table and has a screw member attached to the lower surface, and the screw member of the Y-direction moving table are screwed together. A Z-direction moving mechanism having a screw shaft that rotates using a motor as a drive source, an appropriate lifting means provided on the upper surface of the Y-direction moving base, and a Z-direction moving base that is lifted and lowered by the lifting means. It may be used as the moving mechanism.

  The present invention is configured as described above. The flux printing device and the solder ball mounting device are arranged close to each other, and two substrate support tables that alternate between them are provided below the screen mask. Since it is disposed, the alignment of the substrate with respect to the screen mask can be performed only once when the substrate is conveyed to the flux printing apparatus. Therefore, it is possible to save labor and time loss due to the conventional operation twice and to greatly improve the work efficiency.

1 is a schematic front view of a flux printing and solder ball mounting apparatus on a substrate according to the present invention. It is the same schematic right view. It is the same schematic plan view. It is explanatory drawing of a process procedure.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  In the figure, reference numeral 1 denotes a flux printing and solder ball mounting apparatus on a substrate. 2 is a housing and 3 is a cover.

  Reference numeral 4 denotes a flux printing apparatus disposed in the upper part of the housing 2. Further, the flux printing apparatus 4 moves the squeegee 6 on the screen mask 5 and applies a flux (not shown) placed on the screen mask 5 to a predetermined position of the substrate 7 through a mask hole (not shown). To do. Reference numeral 5a denotes a mask frame. The flux printing apparatus 4 has the same configuration as a conventionally known screen printing apparatus except for a substrate support table described later.

  Reference numeral 8 denotes a solder ball mounting device arranged in parallel in the upper part of the housing 2 in the vicinity of the flux printing device 4. Further, the solder ball mounting device 8 moves the ball supply means 10 on the screen mask 9, and the solder ball (not shown) placed on the screen mask 9 is passed through the mask hole (not shown) to the substrate 7. It is to be mounted on the flux application part. Reference numeral 9a denotes a mask frame. The solder ball mounting device 8 has the same configuration as the flux printing device 4.

Reference numerals 11 and 11 ′ denote substrate support tables disposed alternately below and below the screen mask 5 in the flux printing apparatus 4 and the screen mask 9 in the solder ball mounting apparatus 8. The two substrate support tables 11 and 11 ′ are movable in the left-right direction (X direction) between the screen mask 5 and the screen mask 9, as well as the front-rear direction (Y direction) and the vertical direction (Z direction). ) Is also movable. Further, the two substrate support tables 11 and 11 'sandwich the line L connecting the center of the screen mask 5 in the flux printing device 4 and the center of the screen mask 9 in the solder ball mounting device 8 and start operation. They are arranged so that their positions are on the opposite side and operate in synchronism.

  In the present embodiment, the movement mechanism of the substrate support tables 11 and 11 ′ is moved along a line L connecting the center of the screen mask 5 in the flux printing apparatus 4 and the center of the screen mask 9 in the solder ball mounting apparatus 8. The support bases 12 and 12 'arranged in the above-mentioned manner, and the X-direction movement bases 13 and 13' that slide on the upper surface of the support bases 12 and 12 'and have screw members (not shown) attached to the lower surface; The X-direction moving table 13, 13 'is screwed together, and the screw shafts 15, 15' are rotated by using the motors 14, 14 'as drive sources to form an X-direction (left-right direction) moving mechanism. Y-direction moving bases 17, 17 'having the upper surfaces of the bases 13, 13' slid in a direction perpendicular to the X-direction moving bases 13, 13 'and screw members 16, 16' attached to the lower surfaces; Screw of direction moving base 17, 17 ' The members 16 and 16 'are screwed together, and the screw shafts 19 and 19' that rotate by using the motors 18 and 18 'as a driving source are used as a Y-direction (front-rear direction) moving mechanism, and the upper surfaces of the Y-direction moving platforms 17 and 17'. Appropriate elevating means 20 and 20 'provided on the Z and Z-direction moving bases 21 and 21' that can be moved up and down by the elevating means 20 and 20 'constitute a Z-direction (vertical direction) moving mechanism. In the above configuration, the pulleys and belts are used in this embodiment as means for transmitting the driving force of the motors 14, 14 ', 18, 18' to the screw shafts 15, 15 ', 19, 19'. Yes.

  Next, the processing procedure of this embodiment will be described with reference to FIG. In the figure, P1 represents the center point of the screen mask 5 in the flux printing apparatus 4, and P2 represents the center point of the screen mask 9 in the solder ball mounting apparatus 8.

  In the initial standby stage, as shown in FIG. 3, both the substrate support tables 11 and 11 'are located on the opposite side, and the screen mask 5 in the flux printing device 4 and the screen mask 9 in the solder ball mounting device 8 are arranged. It is shifted outward from the center of each.

  When the apparatus starts operation, as shown in FIG. 4A, both the substrate support tables 11 and 11 ′ simultaneously move to the center points P1 and P2 of the screen mask 5 and the screen mask 9, respectively. And the board | substrate 7 is conveyed on one board | substrate support table 11, and position alignment with respect to the screen mask 5 of the board | substrate 7 is performed. The alignment mechanism for the substrate 7 with respect to the screen mask 5 is not shown. Thereafter, the substrate support table 11 is raised, and the flux is printed by the operation of the squeegee 6. Also descend after the end of this. The other substrate support table 11 'is in a standby state only for the first time, but from the next time, it moves up from P1 and then moves up to mount solder balls on the flux printed portion of the substrate, and then descends to move the substrate. Carry out.

  Next, as shown in FIG. 4B, both the substrate support tables 11 and 11 ′ move outward while simultaneously holding the substrate 7 in the stationary state on the upper surface, and then move in a staggered manner in the left-right direction. Further, it moves inward and stops at P1 and P2, respectively, as shown in FIG.

  Then, the substrate support tables 11 and 11 'stopped at P1 and P2, respectively, one of the substrate support tables 11 rises to mount solder balls on the flux printed portion of the substrate 7, and then descends. The substrate 7 is unloaded. Further, the other substrate support table 11 ′ carries a new substrate 7 on its upper surface, and aligns the substrate 7 with the screen mask 5. And it raises after that and the printing of flux is performed by the action | operation of the squeegee 6. FIG. And again descend after the end of this.

  Next, as shown in FIG. 4D, both the substrate support tables 11 and 11 'move outward at the same time, and then move in a staggered manner in the left-right direction, and then move further inward, respectively. As shown in A), the operation stops at P1 and P2. Thereafter, the procedure shown in FIGS. 4A to 4D is repeated.

  In the above-described embodiment, the flux printing device 4 and the solder ball mounting device 8 are arranged close to each other, and below the screen masks 5 and 9 in these, two substrate support tables 11 that alternately go back and forth between them. 11 ′, the positioning of the substrate 7 with respect to the screen mask can be performed only once when the substrate 7 is conveyed to the flux printing apparatus 4. Therefore, it is possible to save labor and time loss due to the conventional operation twice and to greatly improve the work efficiency.

DESCRIPTION OF SYMBOLS 1 Flux printing and solder ball mounting apparatus 4 Substrate 4 Flux printing apparatus 5 Screen mask 7 Substrate 8 Solder ball mounting apparatus 9 Screen mask 11, 11 'Substrate support table 12, 12' Support base 13 13 'X-direction moving base 14, 14 'Motor 15, 15' Screw shaft 16, 16 'Screw member 17, 17' Y-direction moving table 18, 18 'Motor 19, 19' Screw shaft 20, 20 'Lifting means 21, 21' Z-direction moving table

Claims (2)

A flux printing device that moves the squeegee on the screen mask and applies the flux placed on the screen mask to a predetermined position of the substrate through the mask hole, and a solder that moves the ball supply means on the screen mask and places it on the screen mask. Solder ball mounting devices for mounting the balls on the flux application portion of the substrate through the mask holes are arranged close to each other, and the screen mask in the flux printing device and the screen masks below the screen mask in the solder ball mounting device. screen mass in the substrate support table without the movable also in the Y direction and Z direction together with the X-direction is movable, wherein the center of the screen mask in the flux printing apparatus solder ball mounting apparatus over a period of The center and and operation start position sandwiching the line connecting the is set to be on the other side arranged, without so these two sets of the substrate support table is operated synchronously, the alignment with respect to the screen mask substrate, A flux printing on a substrate and a solder ball mounting device, characterized in that it can be done only once when the substrate is conveyed to a flux printing device. Sliding the moving mechanism of the substrate support table, a support base which is disposed along a line connecting the center of the screen mask that put in the center and the solder ball mounting apparatus of the screen mask in the flux printing apparatus, the upper surface of the support base The X-direction moving mechanism includes an X-direction moving base having a screw member attached to the lower surface and a screw shaft that is screwed with the screw member of the X-direction moving base and rotates using a motor as a driving source. The Y-direction moving table, which slides on the upper surface of the table in a direction perpendicular to the X-direction moving table and has a screw member attached to the lower surface, and the screw member of the Y-direction moving table are screwed together, and the motor is used as a drive source A Y-direction moving mechanism having a screw shaft that is rotated, and an appropriate elevating means provided on the upper surface of the Y-direction moving table, and a Z-direction moving table that is raised and lowered by the elevating means, serve as a Z-direction moving mechanism. 1 flux printing and solder ball mounting apparatus to the substrate according.

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