CN215420900U - Flexible circuit board capable of visual inspection - Google Patents

Abstract

The utility model discloses a flexible circuit board capable of being visually inspected, which relates to the technical field of flexible circuit board production, wherein the flexible circuit board capable of being visually inspected comprises a substrate, connecting fingers, an outline and a punching mark; the connecting fingers are arranged on the substrate, and the connecting fingers are provided with a plurality of connecting fingers; the outline coil is arranged on the connecting finger, the outline line is matched with the external outline of the area where the connecting finger is located, and the outline line is used for marking the punching position; the punching and biasing marks are arranged on the substrate and located on one side of the outline, the punching and biasing marks are separated from the outline by a first interval, and the punching and biasing marks are arranged in pairs and are arranged on two sides of the area indicated by the outline; the offset mark and the connecting finger are respectively positioned on two sides of the outline. The soft circuit board capable of being visually checked can effectively and timely find the problem of deflection, and the outflow of defective products is avoided.

Description

Flexible circuit board capable of visual inspection

Technical Field

The utility model relates to the technical field of flexible circuit board production, in particular to a flexible circuit board capable of being visually inspected.

Background

In the production process of the flexible circuit board, the connecting fingers need to be punched out by using punching equipment, but in the production, due to the expansion and shrinkage of the circuit board, the deviation of the positioning holes and other reasons, the circuit board can deviate during punching, the punched product is a defective product, in addition, problems can not be found in time in production, the offset problem is often checked by adopting a mode of detecting after punching, whether the offset of the product is detected by visual inspection of staff or by means of a measuring instrument at present, for example, a quadratic element measuring instrument is used for detecting the offset condition of the product, the visual inspection of the staff has omission, especially for the flexible circuit board with tighter deviation tolerance such as vehicle-mounted product, the omission factor is higher, the measuring instrument consumes more time, in addition, since all products cannot be inspected by a general quality inspection method, the defective rate of delivered products is difficult to be reduced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a flexible circuit board capable of being visually checked, which can effectively and timely find out the problem of deflection and avoid the outflow of defective products.

The flexible circuit board capable of being visually inspected according to the embodiment of the utility model comprises a substrate, connecting fingers, an outline and a punching offset mark; the connecting fingers are arranged on the substrate, and the connecting fingers are provided with a plurality of connecting fingers; the outline coil is arranged on the connecting finger, the outline line is matched with the external outline of the area where the connecting finger is located, and the outline line is used for marking the punching position; the punching and biasing marks are arranged on the substrate and located on one side of the outline, the punching and biasing marks are separated from the outline by a first interval, and the punching and biasing marks are arranged in pairs and are arranged on two sides of the area indicated by the outline; the offset mark and the connecting finger are respectively positioned on two sides of the outline.

The flexible circuit board capable of being visually checked according to the embodiment of the utility model has at least the following beneficial effects: whether dashing partially can be judged through dashing partially the sign of visualing, at die-cut in-process, the flexible printed circuit board is die-cut along the appearance line, and the inspector can judge whether to be die-cut by the mark towards partially through contrasting with same a pair of to learn whether to dash partially towards die-cut, the inspector can detect the defective products fast promptly, avoids the defective products to flow out, reduces the defective rate in the shipment product.

According to some embodiments of the utility model, the biased mark comprises a base portion and an extension portion, the base portion is spaced apart from an outer rim of the base plate by a second interval, the extension portion points to the outline, and the pointing direction of the extension portion is perpendicular to the outline.

According to some embodiments of the utility model, the extension is circular or rectangular.

According to some embodiments of the utility model, the extension has an extension length greater than or equal to 0.5 mm.

According to some embodiments of the utility model, the second spacing is 0.2 mm.

According to some embodiments of the utility model, one end of the base part is provided with an arc-shaped logo, which is adapted to a corner of the outline.

According to some embodiments of the utility model, the offset mark is further provided with a detection line, and the detection line is parallel to the outline line.

According to some embodiments of the utility model, the first spacing is 0.07 mm.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a flexible printed circuit according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of FIG. 1 circled at position A;

FIG. 3 is a schematic illustration of the position of FIG. 2 shown without a bias;

fig. 4 is a schematic view of the position offset shown in fig. 2.

Reference numerals:

connecting fingers 110, outline 120, die-cut edge 150, offset indicia 130, base portion 131, arcuate indicia 1311, extension 132, outer border 140.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1, 2, 3 and 4, in some embodiments of the present invention, the connecting fingers 110 on the substrate of the flexible printed circuit board need to be punched, the connecting fingers 110 are provided in a plurality of numbers, and there is a gap for separation between the connecting fingers 110, and the outline 120 is provided at the periphery of the connecting fingers 110, it is understood that the connecting fingers 110 are provided in an area a on the substrate, where the area a is the area where the connecting fingers 110 are located, and the outline 120 is a border line surrounding the area a, it is contemplated that the outline 120 is adapted to the outer contour of the area a, that is, the outline 120 is not closely attached to the connecting fingers 110, but is separated from the connecting fingers 110 by a distance according to the production requirement. While the outline 120 is used to identify the die-cut location, i.e., the die-cut device die-cut from the outline 120.

The substrate is provided with a punching and deviation mark 130, the punching and deviation mark 130 is arranged on one side of the outline 120, namely, the area encircled by the outline 120 is an area A, the connecting finger 110 is positioned in the area A, the area outside the outline 120 is an area B, the punching and deviation mark 130 is positioned in the area B, and the punching and deviation mark 130 and the connecting finger 110 are separated by taking the outline 120 as a boundary.

The offset mark 130 is spaced from the outline 120 by a first interval, the first interval conforms to a tolerance value meeting the requirement of the product when the flexible printed circuit board is punched, and preferably, the first interval is 0.07 mm. The offset marks 130 are arranged in pairs, that is, at least two offset marks 130 are present on the substrate, and the offset marks 130 are located on two sides of the area circled by the outline line 120, that is, on two sides of the area a.

For example, from the viewpoint of looking down the circuit board, the offset mark 130 is located in the area B, two offset marks 130 are respectively disposed on two sides of the area a, the offset mark I is disposed on the left side of the area a, the offset mark II is disposed on the right side of the area a, and both the offset mark I and the offset mark II are spaced from the outline 120 by the first distance N. When the flexible circuit board is punched, the flexible circuit board is punched and deviated due to some reason (such as expansion and shrinkage of the circuit board, deviation of a positioning hole and the like), namely, the punching edge 150 is deviated to the left or the right, the deviation is set to be X, when the deviation X is larger than the first distance N, the punching edge 150 is shown to reach the position of the punching mark 130, a part of the punching mark 130 is punched, for example, the deviation is left, the punching mark I is punched for a part, the punching mark II is not punched, and a detector only needs to detect that the punching mark I is punched or the punching mark I is not consistent with the punching mark II, so that the flexible circuit board can be judged to be punched and deviated. When the offset X is less than or equal to the first pitch N, which means that the offset is within an acceptable tolerance range, the offset marks I and II are not punched. It is contemplated that the offset indicator I may be disposed on the left side of the area a and the offset indicator II may be disposed on the upper side of the area a; or the offset mark I is arranged on the upper side of the area A, the offset mark II can be arranged on the lower side of the area A, and the like.

When the punched edge does not correspond to the outline line 120 and the offset exceeds the allowable range, the punching mark 130 is punched, so that the problem of punching deviation of the circuit board is reflected, the matching of the punching mark 130 and the outline line 120 enables an inspector to quickly identify whether the punched product meets the requirement, the problem of punching deviation can be effectively and timely found, the product which does not meet the requirement is timely rejected, the outflow of defective products is avoided, and the reject ratio in the shipped product (namely the ratio of the defective products to the total finished product) is further reduced.

Referring to fig. 1, in some embodiments of the present invention, the offset mark 130 includes a base portion 131 and an extension portion 132, the base portion 131 is spaced apart from the outer frame 140 of the substrate by a second interval, preferably, the second interval is 0.2mm, and the identification of the offset mark 130 can be improved by setting the second interval such that the offset mark 130 is separated from the outer frame 140 of the substrate. The extending portion 132 is directed toward the outline 120, that is, the extending portion 132 extends toward the outline 120, the direction of the extending portion 132 is perpendicular to the outline 120, the direction of the extending portion 132 is the extending direction of the extending portion 132, for example, a punching mark 130 is located on the left side of the outline 120, the extending portion 132 is directed toward the outline 120 on the right side, the extending portion 132 is perpendicular to the outline 120, when the circuit board is punched, the extending portion 132 will be punched, which indicates that the punching mark 130 is punched. Whether the circuit board is die-cut can be judged to whether the inspector only needs to check whether extension 132 is complete, and such detection mode is simple and convenient, helps improving work efficiency.

In some embodiments of the present invention, the extension 132 may be circular or rectangular, the circular or rectangular extension 132 is convenient for an inspector to find that the offset mark 130 is punched, and the circular or rectangular extension is easier to manufacture than the triangular or pentagonal extension.

In some embodiments of the present invention, the length of the extension 132 is greater than or equal to 0.5mm, and the extension 132 has a length that is convenient for an inspector to identify whether the extension 132 is die cut. Preferably, the extension 132 has a length of 0.5mm, enabling the extension 132 to be effectively detected.

Referring to fig. 1, in some embodiments of the present invention, an arc mark 1311 is disposed at one end of the base portion 131, and the arc mark 1311 is adapted to a corner of the outline 120, it can be understood that the outline 120 is used as a punching mark position, and there are corners on the outline 120, which are usually ignored by an operator, so that the circuit board is placed incorrectly, resulting in a punching deviation, and the arc mark 1311 can solve the problem well, so that the operator can know that there are corners of the outline 120 after seeing the arc mark 1311, so that the operator can place the circuit board correctly.

In some embodiments of the present invention, a detection line is disposed on the offset mark 130, and the detection line is located on a side of the offset mark 130 closest to the outline line 120, for example, a detection line is disposed on the offset mark I on the left side of the outline line 120, and the detection line is located on the right side of the offset mark I. It is contemplated that the sensing lines are a first spacing from the profile lines 120. The detection line is parallel with the appearance line 120, then when die-cut skew and the offset is greater than the scope of allowwing, the detection line can be cut off or cut off partly, and the inspector only need check whether the detection line is die-cut can judge whether to dash the skew, adopts the detection line can discern more fast.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (8)

1. A visually inspectable flexible wiring board, comprising:

a substrate;

the connecting fingers (110) are arranged on the substrate, and the connecting fingers (110) are provided with a plurality of fingers;

the outline (120) is encircled on the connecting finger (110), the outline (120) is matched with the outer contour of the area where the connecting finger (110) is located, and the outline (120) is used for identifying the punching position;

the punching and biasing marks (130) are arranged on the substrate and located on one side of the outline (120), the punching and biasing marks (130) are separated from the outline (120) by a first interval, and the punching and biasing marks (130) are arranged in pairs and are arranged on two sides of an area circled by the outline (120);

wherein, the offset mark (130) and the connecting finger (110) are respectively positioned at two sides of the outline (120).

2. A visually inspectable flexible circuit board according to claim 1, wherein said offset mark (130) comprises a base portion (131) and an extension portion (132), said base portion (131) is spaced apart from an outer frame (140) of said substrate by a second interval, said extension portion (132) points to said outline (120), and a pointing direction of said extension portion (132) is perpendicular to said outline (120).

3. A visually inspectable flexible circuit board according to claim 2, wherein said extension portion (132) is circular or rectangular.

4. A visually inspectable flexible wiring board according to claim 2 or 3, wherein an extension length of said extension portion (132) is greater than or equal to 0.5 mm.

5. A visually inspectable flexible circuit board according to claim 2, wherein said second spacing is 0.2 mm.

6. A visually inspectable flexible circuit board according to claim 2, wherein one end of said base portion (131) is provided with an arc-shaped mark (1311), said arc-shaped mark (1311) being adapted to a corner of said outline (120).

7. A visually inspectable flexible circuit board according to claim 1, wherein said offset mark (130) is further provided with a detection line, and said detection line is parallel to said outline line (120).

8. A visually inspectable flexible circuit board according to claim 1, wherein said first spacing is 0.07 mm.

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