TWI830110B - Circuit board through hole review and repair equipment - Google Patents

Abstract

A circuit board through-hole review and repair equipment includes: a machine; a light table, which is set on the machine table; the light table has a desktop that can produce brightness; a fixed unit, which is set on the light table and includes a fixed side, At least two supports, one movable side and several guide rails. The guide rails are arranged on the tabletop in a direction perpendicular to the fixed side. The support parts and the movable side are partially set on the guide rails and can move along the guide rails. The support parts are located between the fixed side and the movable side. It can carry a circuit board so that the circuit board is elevated above the desktop; a projection pointing unit can project at least one indication pattern onto the circuit board; a host computer is installed in the machine to control the operation of the projection pointing unit, thereby enabling Quickly inspect or repair through-holes in circuit boards placed above the light table.

Description

Circuit board through hole review and repair equipment

The present invention is in the technical field of circuit board inspection equipment, and particularly refers to a design for inspecting or repairing through holes on circuit boards.

Circuit boards have become an indispensable component in electronics, computers, communications and other products. High-end circuit boards use a large number of through holes to cooperate with subsequent processing, making the circuits complex and dense. Ultimately, the products meet the requirements of the light, thin, short and small products on the market. needs.

After a large number of through-holes on a large number of circuit boards are processed, mechanical automatic optical inspection (AOI) is usually used for preliminary inspection. Although the AOI method is highly efficient, AOI inspection relies on the defective product determination algorithm. The limitations of the algorithm make it impossible for AOI to be fully applicable to every structural inspection. If defective products are produced, some still turn to manual visual inspection for re-judgment or repair. The purpose is to reduce errors, avoid material waste and increase profits. .

Manual visual inspection is generally performed on a light table. The so-called light table refers to a workbench for visual inspection equipped with a light source. As the size of circuit boards becomes smaller and smaller, and the number and size of through holes become more and more refined, operators often have to watch the display screen connected to the database to understand the location of the suspected defective through holes from the display screen, and then shift their gaze to On the circuit board, look for the location of the suspected defective through hole, and use the brightness generated by the light table to determine whether there is an error. If repair is required, the circuit board must be removed from the light table to avoid accidentally damaging the surface of the light table when directly penetrating the through hole with a tool. Do this. The method is time-consuming and labor-intensive, making the re-inspection work inefficient, or even if you are slightly careless, Using a tool with the wrong aperture can turn repair into damage. In view of this, the inventor considered designing an improved device.

The main purpose of the present invention is to provide a circuit board through-hole re-diagnosis and repair equipment, which can place the circuit board on top of a light table in an elevated manner, and cooperate with the operation of the projection indication unit to project a marking pattern on the circuit board for the operator to It can quickly confirm the location of suspected defective through holes, and then conduct re-evaluation or repair, thereby shortening operation time and improving re-inspection efficiency and quality.

The invention is a circuit board through hole re-judgment repair equipment, which includes: a machine; a light table, which is arranged on the machine; the light table has a desktop capable of producing brightness; a high unit, which is set on the light table, including A fixed side, at least two supporting parts, a movable side and several guide rails. The guide rail is arranged on the tabletop in a direction perpendicular to the fixed side. The supporting part and the movable side are partially installed on the guide rail and can slide along the guide rail. The supporting part is located between the fixed side and the A circuit board can be carried between the movable sides so that the circuit board is elevated above the desktop; a projection pointing unit is located above the light table and can project at least one indication pattern onto the circuit board; a host computer is installed in the machine , control the operation of the projection pointing unit.

As one of the better preferred embodiments, it also includes a display screen and an input interface unit. The display screen and the input interface unit are connected to the host. The input interface unit is at least one of a keyboard, a mouse, a touch control panel, and a barcode scanner. The input interface unit inputs the circuit board data to the host, and the host controls the display screen or the projection pointing unit to generate a corresponding response.

As one of the better preferred embodiments, the guide rail is set close to the edge of the tabletop. The guide rail is a fixed base connected to both ends of a circular shaft. The fixed base is set on the tabletop. The support member is provided with axle seats at both ends, and the two ends of the movable edge are provided with The sliding seat and the guide rail run through the axis seat and the sliding seat, so that the support part and the movable edge can be adjusted to the position on the tabletop.

As one of the better preferred embodiments, the fixed side is provided with an L-shaped first holding member, which can be used as a reference positioning point when a corner of the circuit board is close to the first holding member, and the movable side is provided with an L-shaped first holding member. The circuit board can be clamped between the first holding part and the second holding part.

As one of the preferred embodiments, the projection pointing unit can project a display pattern, and the display pattern displays information about tools to be used for maintenance.

As one of the better preferred embodiments, a tool indication board is also included. The tool indication board is arranged on the light table, and the projection pointing unit projects a display pattern on the tool indication board.

As one of the better preferred embodiments, the light table is pivotally connected to the top of the machine, and a height adjustment structure is provided on the other side of the top of the machine away from the pivot joint so that the tilt angle of the light table can be adjusted.

As one of the better preferred embodiments, the height adjustment structure includes several positioning slots and at least one adjustment rod. The several positioning slots are located on the top of the machine. The adjustment rod is pivoted to the bottom of the light table. When the adjustment rod is clamped in one of the positioning positions, In the groove, the tilt angle of the light table can be maintained.

As one of the better preferred embodiments, the machine is also provided with an extension platform for placing the input interface unit or maintenance tools.

As one of the better preferred embodiments, the machine platform is provided with a bracket extending upward, and the projection pointing unit is arranged on the bracket so that the projection pointing unit is located above the light table.

Compared with the existing technology, the circuit board through hole re-judgment repair equipment of the present invention has the following specific effects:

1. The indication pattern projected by the projection indication unit allows the operator to quickly confirm the location of the suspected defective through hole on the circuit board, shortening the search time and facilitating the inspection operation.

2. The elevated unit carries the circuit board above the desktop. If you want to repair the through hole, you can directly use tools to repair it without damaging the desktop. It is quick and convenient.

3. The display pattern projected by the projection indication unit allows the operator to understand the size or type of tool to be used, avoiding unrecoverable errors caused by using the wrong large-size tool; in addition, there is no need to look up during the process, just Just observe the display pattern presented on the tool dashboard, which can simplify the operation process and make the operation more accurate, smooth and fast.

4. The circuit board through-hole re-evaluation and repair equipment of the present invention can shorten the time to search for the location of suspected defective through-holes and improve the accuracy, shortening the re-evaluation operation time. In addition, maintenance work can also quickly and accurately obtain tool information, simplifying operations. process, the overall work quality and efficiency can be improved, thereby increasing overall profits.

1:Machine

11: casters

12:Adjust the feet

14: Height adjustment structure

141: Positioning slot

142:Adjustment lever

15: Bracket

16: Extended platform

2:Light table

21:Desktop

211:Working frame area

22: switch

3: Elevated unit

31: Fixed edge

312: First retainer

32:Support

321:Axis seat

33: active side

332:Second retainer

333:Sliding seat

34: Guide rail

341: Fixed seat

4: Projection pointing unit

41:Instruction pattern

42: Display pattern

5:Host

6: Tool dashboard

7:Display screen

8: Input interface unit

9:Circuit board

91:Through hole

Figure 1 is a perspective view of the circuit board through hole re-diagnosis and maintenance equipment of the present invention.

Figure 2 is a side view of the circuit board through hole re-diagnosis and maintenance equipment of the present invention.

Figure 3 is a schematic diagram of the operation of the circuit board through hole re-judgment repair equipment according to the present invention.

Figure 4 is an operational side view of the circuit board through hole re-diagnosis and maintenance equipment of the present invention.

The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments and drawings. It should be noted that when an element is referred to as being "mounted or secured to" another element, it means that it can be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, this means that it can be directly connected to the other element or that intervening elements may also be present. In the illustrated embodiment, directions indicating up, down, left, right, front and back, etc. are relative and are used to explain that the structure and movement of different components in this case are relative. When the part is in the picture These representations are appropriate for the location shown. However, if the description of a component's location changes, it is assumed that these representations will change accordingly.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in Figures 1 and 2, they are a perspective view and a side view of the circuit board through hole re-diagnosis and maintenance equipment of the present invention. The circuit board through hole re-diagnosis and maintenance equipment of the present invention includes a machine 1, a light table 2, a high unit 3, a projection pointing unit 4 and a host 5. The light table 2 is carried by the machine 1. The light table 2 has a desktop 21 that can generate brightness. The elevated unit 3 is provided on the light table 2 and includes a fixed side 31, at least two supports 32, a movable side 33 and several guide rails 34. The guide rails 34 are provided on the desktop 21 in a direction perpendicular to the fixed side 31. The support members 32 and the movable side 33 are partially disposed on the guide rail 34 and can move along the guide rail 34 . The support 32 is located between the fixed side 31 and the movable side 33 and can carry a circuit board, so that the circuit board is elevated above the desktop 21 . The projection pointing unit 4 is disposed above the light table 2 and can project at least one indication pattern on the circuit board. The host 5 is installed in the machine 1 and is responsible for controlling the operation of the projection pointing unit 4; thereby, when the circuit board is placed on the digital support 32, the two sides will be clamped and positioned in the correct position by the fixed side 31 and the movable side 33, and the projection The pointing unit 4 projects an indication pattern on the position of the through hole on the circuit board, and cooperates with the brightness generated by the desktop 21 to allow the operator to clearly observe the status of the through hole, such as penetration? Partial penetration? Not penetrated? ...etc., if repair is required, since the circuit board has been elevated, tools such as cutters or drills can be used to penetrate it immediately to speed up the inspection work.

Next, a detailed description of the structure of each component is given:

The machine platform 1 is a three-dimensional hollow frame for carrying the light table 2 . The bottom of the machine 1 is provided with several casters 11 and several adjusting feet 12 . The casters 11 can move the machine 1 conveniently. If you want to fix the position after moving, rotate the adjusting feet 12 to extend them to raise the machine platform 1 to avoid arbitrary movement later. The light table 2 can be installed on the top of the machine 1 in a fixed or adjustable manner. For example, the light table 2 can be tilted at an angle to facilitate the operator to check the circuit. plate. In this embodiment, it is an adjustable type. One side of the bottom of the light table 2 is pivotally connected to the top of the machine platform 1, and the other side away from the pivotal joint is provided with a height adjustment structure 14. The height adjustment structure 14 can also be in various forms. In this embodiment, the height adjustment structure 14 includes several positioning slots 141 and at least one adjustment rod 142. The plurality of positioning slots 141 are sequentially provided on the top of the machine 1. In this embodiment, In the example, the top of the machine 1 is provided with two sets of positioning slots 141 parallel to each other. The adjustment rod 142 is U-shaped and pivotally connected to the bottom of the light table 2. When the U-shaped cross bar of the adjustment rod 142 is clamped in one of the positioning grooves 141, the tilt angle of the light table 2 can be maintained.

The light table 2 is provided with a desktop 21 with a light-emitting surface facing upward, and is provided with a switch 22 for turning on or off. The structure of the light table 2 is composed of a light source inside and a light-transmissible desktop board. In this embodiment, the desktop 21 is in the shape of a rectangle, and the main light-emitting area is in the smaller working frame area 211, which can be applied to a variety of circuit boards of different sizes.

The elevated unit 3 is responsible for keeping the circuit board elevated above the desktop 21 during operation to facilitate subsequent inspection or maintenance of through holes. The elevated unit 3 includes a fixed side 31 , at least two supports 32 , a movable side 33 and a guide rail 34 . The fixed edge 31 is a long strip, and its position is fixed on one side of the desktop 21, as shown on the right side in Figure 1. One end of the fixed edge 31 is also provided with an L-shaped first retaining member 312. The first retaining member 312 is located close to the direction of the operator. When the circuit board and the first retaining member 312 are in close contact, there is also a positioning reference here. point function. The guide rails 34 are disposed adjacent to the edge of the tabletop 21, and are actually two in number and are disposed on two opposite sides of the tabletop 21. The specific position is between the edge of the tabletop 21 and the work frame area 211. In this embodiment, the guide rail 34 is a circular shaft connected to fixed seats 341 at both ends and is provided on the desktop 21 . The guide rail 34 is arranged in a direction perpendicular to the fixed edge 31 . The support member 32 is a round rod and is provided with axle seats 321 at both ends. The guide rail 34 penetrates the axle seats 321 so that the support member 32 can move left and right to adjust its position. The movable edge 33 is also a long strip, and its direction is parallel to the fixed edge 31 . One end of the movable edge 33 is also provided with an L-shaped second retaining member 332. The positions of the first retaining member 312 and the second retaining member 332 are symmetrical to each other. Slide seats 333 are provided at both ends of the movable edge 33 , and the guide rails 34 penetrate the slide seats 333 so that the position of the movable edge 33 on the desktop 21 can be adjusted. The circuit board is placed on two supports 32, with fixed edges 31 on both sides. Clamped by the movable edge 33, the first retaining member 312 and the second retaining member 332 can also clamp the circuit board to prevent the circuit board from slipping and adjust it to the correct reference point position.

The projection pointing unit 4 is a projection device controlled by the host 5 and capable of projecting at least one indication pattern on the position of the through hole on the circuit board. The indication pattern may be a light spot, an arrow, a circle, or other patterns. The projection pointing unit 4 is located above the light table 2. In this embodiment, it is installed at the bracket 15 extending upward from the machine 1. However, when the tilt angle of the light table 2 is adjusted, the host 5 will also correct the relative data to make the projection direction Unit 4 projects the correct position. Of course, it is not limited to this. The projection pointing unit 4 can also be installed on a bracket extending from the light table 2. This method can improve the problem of changing parameters when the angle of the light table 2 changes.

The invention is a circuit board re-inspection equipment. A large number of circuit boards will first undergo preliminary inspection to distinguish good or defective products, and then re-evaluate or repair the through holes of the circuit boards in the defective products, reducing losses and increasing profits. profit. The relevant defective hole position data can be transmitted to the host 5 through the remote database, and then the host 5 drives the projection pointing unit 4 to operate.

In addition, the present invention also includes a tool indicating plate 6. The tool indicating plate 6 is located on the light table 2. In this embodiment, the tool indicating plate 6 is arranged on the first holder 312. The projection pointing unit 4 can project a display pattern. In this embodiment, the display pattern is projected on the tool indicator board 6. The display pattern can display the model or size of the tool to be used for maintenance. The tool can be a cutter, a drill bit, a poke needle, etc. For example, the display pattern can match the predetermined size of the through hole and directly display the hole diameter, allowing the operator to directly use tools of the corresponding size to repair the hole after confirming the location and defect status, thereby shortening maintenance time and the chance of errors. Of course, the display pattern can also be projected to other positions of the light table 2, but this position must be easy for the operator to view.

In order to facilitate operation and input of circuit board related information. The present invention also includes a display screen 7 and an input interface unit 8. The display screen 7 and the input interface unit 8 are both connected to the host 5 and controlled by it. The display screen 7 is arranged on the bracket 15 and located above the light table 2 for easy viewing when looking up. The input interface unit 8 is a keyboard, a sliding At least one of a mouse, a touch control panel, and a barcode scanner inputs circuit board data to the host 5 through the input interface unit 8, and the host 5 generates a corresponding response when controlling the display screen 7 or the projection pointing unit 4. In addition, the machine 1 is provided with an extension platform 16 toward the operator. The extension platform 16 can carry the input interface unit 8 or other tools for repairing the circuit board.

As shown in Figures 3 and 4, they are schematic diagrams of the actual use of the present invention. Place the circuit board 9 on the two supports 32, and adjust the position of the support 32 to avoid the through hole 91. One corner of the circuit board 9 is close to the first retainer 312, and the two sides are sandwiched by the fixed edge 31 and the movable edge 33. Hold so that the circuit board 9 is in the correct position. The input interface unit 8 is used to input the basic information of the circuit board 9. The host 5 further obtains the position information of the through hole 91 of the circuit board 9 to be re-inspected through the remote database, and then controls the projection instruction unit 4 to project the instruction pattern 41. In this embodiment The middle indicator pattern 41 is an arrow. When the light table 2 is activated to light up the desktop 21, the operator can clearly see the conditions inside the through hole 91. If repair is required, the operator can view the display pattern 42 displayed on the tool indicator board 6. This In the embodiment, the pattern 42 shown is Φ-10, and then the correct size tools are used for repair. This can make the inspection operation simpler and faster, reduce the error rate, and greatly improve the efficiency and quality of the re-inspection operation.

The above are only preferred embodiments of the present invention and are not intended to limit the scope of the embodiments of the present invention. That is to say, all equivalent changes and modifications made in accordance with the patentable scope of the present invention are covered by the patentable scope of the present invention.

1:Machine

11: casters

12:Adjust the feet

14: Height adjustment structure

141: Positioning slot

142:Adjustment lever

15: Bracket

16: Extended platform

2:Light table

21:Desktop

211:Working frame area

22: switch

3: Elevated unit

31: Fixed edge

312: First retainer

32:Support

321:Axis seat

33: active side

332:Second retainer

333:Sliding seat

34: Guide rail

341: Fixed seat

4: Projection pointing unit

5:Host

6: Tool dashboard

7:Display screen

8: Input interface unit

Claims (9)

A kind of circuit board through hole re-judgment repair equipment, including: a machine; a light table, which is set on the machine; the light table has a desktop that can produce brightness; a high unit, which is set on the light table, including A fixed side, at least two supports, a movable side and several guide rails. The guide rail is arranged on the desktop in a direction perpendicular to the fixed side. The support part and the movable side are partially provided on the guide rail and can slide along the guide rail. , the support member is located between the fixed side and the movable side and can carry a circuit board, so that the circuit board is elevated above the tabletop. The guide rail is located adjacent to the edge of the tabletop. The guide rail is a circular shaft at both ends. The fixed base is connected to the desktop. The support member is provided with axle seats at both ends. The movable edge is provided with sliding seats at both ends. The guide rail penetrates the axle seat and the sliding seat so that the support member and the sliding seat are connected. The position of the movable edge on the tabletop can be adjusted; a projection pointing unit is located above the light table and can project at least one indication pattern onto the circuit board; a host is installed in the machine to control the operation of the projection pointing unit . The circuit board through hole review and repair equipment described in claim 1 also includes a display screen and an input interface unit. The display screen and the input interface unit are connected to the host. The input interface unit is a keyboard, a mouse, At least one of a touch control panel and a barcode scanner is used to input the circuit board data to the host through the input interface unit, and the host controls the display screen or the projection pointing unit to generate a corresponding response. For the circuit board through-hole reassessment repair equipment described in claim 1, the fixed edge is provided with an L-shaped first holder, which can be used as a reference positioning point when a corner of the circuit board is close to the first holder. , the movable edge is also provided with an L-shaped second retaining member, and the circuit board can be clamped between the first retaining member and the second retaining member. For the circuit board through-hole reassessment repair equipment described in claim 1, the projection pointing unit can project a display pattern, and the display pattern displays information about tools to be used for repair. The circuit board through hole re-diagnosis and repair equipment described in claim 4 further includes a tool indicator board, the tool indicator board is arranged on the light table, and the projection pointing unit projects the display pattern on the tool indicator board. For the circuit board through-hole re-assessment repair equipment described in claim 1, the light table is pivotally connected to the top of the machine, and the other side of the top of the machine away from the pivot joint is provided with a height adjustment structure so that the light table The tilt angle can be adjusted. For the circuit board through-hole reassessment repair equipment described in claim 6, the height adjustment structure includes a plurality of positioning slots and at least one adjustment rod. The plurality of positioning slots are located on the top of the machine, and the adjustment rod is pivotally connected to the light. At the bottom of the table, when the adjustment rod is clamped in one of the positioning grooves, the tilt angle of the light table can be maintained. For the circuit board through-hole reassessment repair equipment described in claim 1, the machine is also provided with an extension platform. As for the circuit board through-hole reassessment repair equipment described in claim 1, the machine is provided with a bracket extending upward, and the projection pointing unit is arranged on the bracket so that the projection pointing unit is located above the light table.

Images