JPS62126689A - Repair material guiding device of printed board repair welder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is a printed circuit board repair welding machine for repairing disconnections in wiring patterns of printed circuit boards used in electronic control circuits, etc. This is necessary because it relates to a restorative material guide device that guides the tip of the tool.

[Conventional technology]

Recently, the electronic equipment industry has achieved rapid development, and electronic control circuits themselves have become compact, so printed circuit boards with patterned wiring circuits are often used. As the demand for such printed circuit boards increases,
Defects in the substrate manufacturing process are also increasing. Among these defects, "cuts" in the wiring pattern are particularly common.

In this case, you can either discard this board as a defective product, or repair the "cut" part using a welding machine designed specifically for printed circuit board patterns, and then use this repaired printed circuit board in your product. However, the current situation is that each time this restoration work is carried out, the worker uses a microscope to support the restoration material and weld it where necessary.

[Problem that the invention seeks to solve]

In this way, pudding 1~! To repair "cuts" in the board's wiring pattern, workers operate the welding machine and repair material one by one and check each work with their own eyes, so this work requires a skilled worker. However, the positioning accuracy of the repair material varies depending on the operator, making it impossible to obtain a stable and highly accurate repair substrate. In addition, the thickness of the wiring pattern on a printed circuit board is normally 0.1 to 0.8 #l #1, and in particular, it is now possible to make it even thinner than this, so that workers can Even when repair work is done by hand, it is important to always keep the repair material in place.
This method has problems such as fatigue in workers and frequent repair failures.

[Means for solving problems]

The present invention was invented for the purpose of solving the above-mentioned problems and making it possible to automate the repair work of the wiring pattern of a printed circuit board. In a printed circuit board repair welding machine that uses this welding tool 11 to weld the wiring repair part of a printed circuit board 70 fixed on a work table 8, the repair (Δ80) A guide unit 20 is disposed to guide the repair material 80 so that the repair material 80 is in a straight line via a tension pulley 23 that applies tension to the thread-like repair material 80 from a reel 22 to be stored, and the welding tool 11 is sandwiched between the guide unit 20. On the other hand, a drawer unit 40 that operates to grasp the end of the repair material 80 and guide and pull out the repair lA30 to the tip of the welding tool 11 is disposed, and a drawer unit 40 is disposed between the guide unit 20 and the welding tool 11. A locking unit 30 is provided for sandwiching and fixing the repair material 80 pulled out by the drawer units 1 to 40 from a direction perpendicular to the direction of movement of the repair material 80 and for cutting the repair material 4,480.

[Effect]

The thread-like repair material 80 wound around the reel 22 is wound around the guide pulleys 24 of the guide units 1 to 20 via the tension pulley 22, and the repair material 80 is made to meander.
Apply a predetermined tension to the Then, it passes through the guide means of the guide unit 20 linearly guided from the guide pulley 24 and is moved to the lock unit 30. After that, the repair material 80 is grabbed so as to cross the front end of the welding tool 11 and pulled out by the drawer unit 40, and then the wiring repair part of the printed circuit board 70 placed on the work table 8 on the work table unit 90 is removed. Match the tip of the welding tool 11. After this, the welding tool 11 moves forward and welds at one point J°.
Ru. When this work is completed and the welding tool 11 is moved back,
The drawer unit 40 releases the restorative material 80. Meanwhile, at the same time, the rectilinear movement unit 91 moves by a predetermined amount to a preset position. And again, welding tool 1
1 advances and welding is performed at the next position. In this way, repair welding work is performed by repeating the above-mentioned work one after another at a plurality of positions spaced at predetermined intervals across the broken wire.

[Example] An example of the present invention will be described below based on the drawings. In FIGS. 1 and 2, 10 is a welding unit. These welding units 1 to 10 are raised and lowered by a first unit drive source 3 attached to the fixed block 1 via a fixing plate 2, and by a second unit drive source 6 fixed to a lifting member 5 that can be moved up and down along a rail 4. It is set up to move. This welding unit 10 is provided with a tool drive source (not shown) that moves the welding tool 11 up and down.

The fixed block 1 is fixed to a base 7, and the base 7 is equipped with a rotation unit 9 for horizontally rotating the work table 8.
2 is fixed. This rotating unit 92 includes linear moving units 1 that can move in directions perpendicular to each other on a horizontal plane.
- 91 are attached, and these rotating units 1 - 92 and linear moving units 1 - 91 constitute a work table unit 90 . This work table unit 90 is for rotating the work table 8 on which the printed circuit board 70 is placed or moving it back and forth to the left to a desired position to position the repair position of the printed circuit board 70 directly below the tip of the welding tool 11. be.

Also, a support arm 1 having one end fixed to the fixed block 1
A surveillance camera 102 as an imaging means is attached to the other end of the welding tool 11, and the surveillance camera 102 focuses on the printed circuit board 70 on the work table 8 that has been moved to a predetermined position. The welding tool 11 is mounted obliquely from the front to the rear so that the focal point is in contact with the substrate 70. This surveillance camera 1
02 is the monitoring television 1 of the separately installed operation control unit 93
03 and open the work table unit 90.
The linear movement unit 91 is operated by this operation control unit 93, and the rotation unit 92 is necessarily operated manually.

As shown in FIGS. 1, 3, and 4, a guide unit 2 is attached to the tip of the welding unit 10 with the welding tool 11 sandwiched therebetween, and a guide unit 2 through which a filamentous repair material 80 passes.
0 is a guide plate 2 that is movable integrally with the welding unit 10.
1 via a mounting member 25, and this guide unit 20 guides a filamentous repair material 80 to the tip of the welding tool 11.

The repair material 80 to be moved to the guide unit 20 is stored in a predetermined amount on a reel 22 rotatably attached to the guide plate 21, and this repair material 80 applies tension to the reel 22 to the extent that it does not loosen. The repair 448 from the reel 22 is wound around the guide pulley 24 of the guide unit 20 via the tension pulley 23 which is elastically biased.
0 is meandered by these tension pulleys 23 and guide pulleys 24. This guide pulley 24 can be rotatably attached to the mounting member 25.
A guide plotter 26 is fixed to the guide pulley 24 for horizontally guiding the restorative material 80 to a predetermined position by a guide groove 24a formed in the guide pulley 24. As shown in FIG. 5, on both sides of the tip of the guide block 26, a pair of regulating pieces 27 that regulate the lateral displacement of the repair material 80 with respect to the advancing direction are attached so as to face each other and to be freely adjustable. .

On the other hand, above the guide plotter 26, a holding member 28 having a depth opposite to the thickness of the restorative material 80 is arranged. It is rotatably supported by a member 29.

This presser member 28 is urged by a presser spring 29a so that its tip comes into contact with the upper surface of the guide block 26. The regulating piece 27 and the pressing member 28 constitute a guide means for guiding the repair material 80.

Further, between the guide unit 20 and the welding unit 10, a lock unit 3 is provided which has a fixing part for fixing the filamentous repair material 80 and a cutter part for cutting the repair material 80.
0 is placed. As shown in FIGS. 6 and 7, the fixing portion of the lock unit 30 is located in front of the guide unit 20, and is fixed on the upper surface of the guide block 26 constituting the guide unit 20. The upper surface of the fixed side locking member 31a of the section is located. A movable lock member 31b is mounted above the fixed lock member 31a so as to be movable up and down along the swing plate 32 to which the fixed lock member 31a is attached. The movable side lock member 31b is operated by a lock drive source 33 fixed to the swing plate 32, and is located between the first stop 1 to the collar 34 fixed to the swing plate 32 and the movable side lock member 31b. It is elastically biased forward by an arranged lock spring 35.

On the other hand, a fixed side cutter 36a is attached to this swing plate 32, and the side opposite to the tooth surface of this fixed side cutter 36a is fixed to a swing shaft 38a that is swingably supported by the swing plate 32. A movable cutter 36b is provided. The movable cutter 36b is operated by a cutter drive source 37 attached to the swing plate 32, and includes a second stopper 34b fixed to the swing plate 32 and the swing fill 138a.
A cutter spring 39 disposed between a swinging lever 38b fixed to a fixed cutter 36a and a movable cutter 36b
It is constantly elastically biased to open the gap between the two. The rocking plate 32 is attached to the guide plate 21 and is pivoted on the support plate 61 so as to be swingable on a surface upright with respect to the direction of movement of the restorative material 80. It is operated by a third unit drive source 62 attached to a plate 61. On the opposite side to the third unit drive source 62, a pressure spring 63 or a spring receiver fixed to the swing plate 32 and the support plate 61 may be disposed between the member 64 and the swing plate 32.
The fixed side and movable side lock portions (31a and 31b) are always biased so that they reach the front of the guide units 1 to 20.

The other of the welding units 10 has a third locking unit 30 that moves forward and grabs the repairing material 80 that passes through the guide unit 20 while the locking unit 30 is fixing the repairing material 80. Drawer units 1 to 40 are attached to the guide plate 21 and are moved back as they are while being rotated by the unit drive source 62 to pull out the repair material 80 by a predetermined amount and cross the front of the tip of the welding tool 11.
It is spelled out.

This drawer unit 40 has a structure in which the jaws 41 open when moving forward to grab the repair (180), and when the tip of the repair material 80 enters, the jaws 41 close and retreat.

Furthermore, as shown in FIG. 1, the welding unit 10 includes a guide that supports a positioning unit 50 that moves up and down together with the welding unit 10 to position the repair material 80 pulled out by the drawer unit 40 at a predetermined position. A member 51 is fixed and opened, and this guide member 51 has a guide shaft 52 with a guide arm 53 configuring the positioning unit 50 fixed at the tip.
is slidably provided. A repair material 80 is applied to the tip of the guide arm 53 on both sides of the welding tool 10.
- A suppressing member 54 is attached to position and press the substrate 70. A connecting member 55 is fixed to the rear end of the guide shaft 52, and a tension spring 57 is disposed between the connecting member 55 and the guide member 51 to elastically bias the connecting member 55 to move forward at all times. has been done. A positioning operation drive source 56 that operates to move the connecting member 55 backward is fixed to the guide member 51 .

Next, the operation of this embodiment will be explained. Repair material 8 in advance
0 is passed from the reel 22 through the tension pulley 23, wound around the guide pulley 24, and passed from the guide unit 20 to the lock unit 30 to the jaw 41 of the drawer unit 40.
After gripping and pulling out the welding tool 11 so that the front end of the welding tool 11 is in a traversal state, the wiring repair portion of the printed circuit board 70 is positioned at the lowered position of the welding tool 11 end and the position above the work table 8. Then, the operation control unit 93 is operated to operate the linear movement unit 91, and this printed circuit board 7
The work table 8 is moved so that one of the repaired wiring patterns sandwiching the wiring repaired part 0 is at the lowered position of the welding tool 11. In this operation, the rectilinear movement unit 91 and the rotation unit 92 are operated while watching the monitoring television 103 connected to the monitoring camera 102 to perform fine positioning adjustments.

In this way, the repair material 80 and the repair wiring pattern having the wiring repair portion match in parallel, and the welding tool 11 is positioned so as to match on this wiring pattern, and the welding tool 11 is placed at the initial welding position. It is set so that

Subsequently, when a signal to start welding is input, the positioning operation drive source 56 shown in FIG. 1 is operated, and the positioning unit 50 moves forward. Through this operation, the repair +180 is held down and positioned at a predetermined position by the suppressing member 54. Following this, the welding tool 11 moves forward and comes into contact with the repair material 80 to perform welding.

-14= When this work is completed, the welding tool 11 and the positioning unit 50 are respectively retreated to their predetermined positions, and the drawer unit 40, which is gripping one end of the repair material 80, is heard. Subsequently, the work table 8 is moved by a predetermined distance to the next welding position of the repair material 80 by the linear movement unit 91, and the positioning unit 50 moves forward again to perform the above operation.

When repairing such wiring patterns, d3 usually uses
Be prepared to weld multiple locations; in this example,
Open the area with two welds sandwiching this repair area,
The above welding work was repeated until the four locations were welded.
When one work cycle is completed, the cutter drive source 37 of the lock unit 30 shown in FIG. 6 and FIG. Repair (O80 is disconnected.

At this time, the lock drive source 33 operates and the repair material 80 is fixed between the movable lock member 31b and the fixed lock member 31a. Then, the welding units 1 to 10 and the positioning unit 50 move back, and at the same time, the drawer units 1 to 40 move forward again to form a linear repair material 80 between the guide unit 20 and the lock unit 30.
grab. Thereafter, the movable locking member 31b is raised by the operation of the lock drive source 33 to release the fixation of the repair material 80, and at the same time, the swing plate 32 is moved inward by the operation of the third unit 1 to the drive source 62. Next, the drawer unit 40 grasps the repair material 80 and retreats, and the repair material 80 is pulled out by a predetermined amount. Then, the swing plate 32 returns to its original position by the action of the pressing spring 63, and the repair material 80 is moved to the fixed side lock portion t7;
a, the movable lock member 31b, and the fixed cutter 36a.
and the movable cutter 36b, and the work is completed.

On the other hand, once the repair work of this printed circuit board 70 is completed,
The rectilinear movement unit 91 operates to return to the work starting position, the fixation of the printed circuit board 70 is released, and the printed circuit board 70 is taken out. Subsequently, when the next printed circuit board is fixed on the work table 8, the above operations are repeated.

〔Effect of the invention〕

As is clear from the embodiments described above, the present invention applies the thread-like repair material 80 guided to the tip of the welding tool 11 to the wiring repair portion of the printed circuit board 70 fixed on the work table 8. In a printed circuit board repair welding machine that performs welding, a predetermined amount of the repair material 80 is wound and stored on one side with the welding tool 11 in between, and the repair is carried out via a tension pulley 23 that applies tension to the repair material 80 from a reel 22 that stores the repair material 80. Guide units 1 to 20 are arranged to guide the repair material 80 so that the repair material 80 is in a straight line, and the guide units 1 to 20 that guide the repair material 80 are placed on the other side with the welding tool 11 in between.
A drawer unit 40 that operates to guide and pull out the welding tool 11 is disposed at the tip of the welding tool 11, and the guide units 1 to 20
A lock unit 30 is provided between the welding tool 11 and the welding tool 11 to sandwich and fix the repair material 80 pulled out by the drawer unit 40 from a direction perpendicular to the direction of movement of the repair material 80 and to cut the repair material 80.

For this reason, in wiring repair work for "cuts" in the wiring pattern of printed circuit boards 1 to 1, it is possible to easily position the thin thread-like repair material and the wiring repair parts of the printed circuit board according to the wiring pattern, and to repair the wiring at multiple locations in succession. Welding work can be performed, eliminating the need for operator skill and automation, improving work efficiency. Furthermore, if the positioning work is performed first, there is no need to perform positioning each time during continuous work, and the positioning viscosity does not vary, making it possible to perform highly accurate repair work on the wiring pattern.

In particular, even if the thickness of the wiring pattern on the printed circuit board becomes thinner than the current one, it can be done without relying on the operator, so the operator will not get tired. Furthermore, compared to the case where the worker performs the restoration work as in the past, the child no longer comes into direct contact with the filamentous restoration material, which prevents the restoration material from getting dirty and causing corrosion. It has unique effects such as good weldability and long life.

[Brief explanation of drawings]

Fig. 1 is an enlarged front view of the main parts of a printed circuit board repair welding machine, Fig. 2 is an overall perspective view showing an embodiment of the present invention, Fig. 3 is an enlarged front view of main parts of the guide unit, and Fig. 4 is a front view of the main parts of the guide unit. Fig. 5 is an enlarged right side view of the main part of Fig. 3, Fig. 6 is an enlarged front view of the main part of the lock unit, and Fig. 7 is a left side view of the lock unit of Fig. 6. It is a diagram. 3 is a first unit drive source, 6 is a second unit drive source, 8 is a work table, 10 is a welding unit, 11 is a welding tool, 20 is a guide unit, 21 is a guide plate, 22 is a reel,
23 is a tension pulley, 24 is a guide pulley, 2
5 is a mounting member, 26 is a guide block, 27 is a regulation piece, 28 is a suppression member, 29 is a support member, 30 is a lock unit, 31a is a fixed side lock member, 31b is a movable side lock member, 32 is a swing plate , 33 is a lock driving source, 36a
36b is a fixed cutter, 36b is a movable cutter, 37 is a cutter drive source, 38a is a swing shaft, 38b is a swing lever, 40 is a drawer unit, 41 is a jaw, 50 is a positioning unit, 53 is a guide arm, 56 is a Positioning operation drive source, 6
1 is a support plate, 62 is a third unit drive source, 63
70 is a pressure spring, 70 is a printed circuit board, 80 is a repair material, 90 is a work table unit, 91 is a linear movement unit, 92 is a rotation unit, 93 is an operation control unit, Patent applicant Nitto Seiko Co., Ltd. JP-A-62-
126G89 (8) 2f μm wave

Claims (1)

[Claims] 1) A filamentous repair material 80 is guided to the tip of a welding tool 11 movably provided on the base 7, and this repair material 80 is attached to a print fixed on the work table 8 by the welding tool 11. In a printed circuit board repair welding machine that welds to a repaired wiring portion of a board 70, the repair material 80 is linearly guided from a reel 22 on which a predetermined amount of the repair material 80 is wound and stored on one side with the welding tool 11 in between. A guide unit 20 is disposed, and a drawer unit 40 is disposed on the other side of the welding tool 11, which operates to grasp the end of the repair material 80 and guide and pull out the repair material 80 to the tip of the welding tool 11. A lock unit 30 is provided between the guide unit 20 and the welding tool 11 to sandwich and fix the repair material 80 pulled out by the drawer unit 40 from a direction perpendicular to the direction of movement of the repair material 80 and to cut the repair material 80. A restorative material guiding device characterized by the following. 2) The guide unit is a tension pulley 2 that applies tension to the thread-like repair material 80 that is wound and stored in a predetermined amount on the reel 22.
A rotatable guide pulley 24 is installed at a position where the restorative material 80 from 3 is guided to a predetermined position and the restorative material 80 meanders in cooperation with the tension pulley 23, and the restorative material 80 guided by this guide pulley 24. 2. The repair material guiding device according to claim 1, further comprising a guide means provided between the guide pulley 24 and the lock unit 30 to guide the repair material in a straight line.