TWM547669U - Inspection system - Google Patents

Description

Detection Systems

This creation relates to a detection system, and in particular to a detection system for detecting a film.

For manufacturers of various film applications, in order to effectively control the quality of the products produced after the film processing, various manufacturers will use various types of machine equipment to test the film to avoid the flaws in the film, resulting in processing. There is a problem with the product. Therefore, for manufacturers of various film applications, how to effectively perform flaw detection on a film is one of the most important problems. Therefore, the author is concentrating on research and using the application of theory, and proposes a creation that is reasonable in design and effective in improving the above problems.

The main object of the present invention is to provide a detection system for solving the problem that the associated film detecting device cannot effectively detect flaws in the film.

In order to achieve the above object, the present invention provides a detection system for detecting a film to be tested, and the detection system comprises: a line scan camera, a light source device, a light shielding unit and a carrier device. The light source device is located below the line scan camera, and the light source device includes a light exit surface, and the light exit surface is disposed in a direction facing the line scan camera. The light shielding unit is disposed on the light emitting surface of the light source device, and the light shielding unit includes a slit, and the light beam of the light source device can only be emitted through the slit to the light shielding unit. The carrier device is located between the line scan camera and the light source device, and the carrier device can carry the film to be tested; wherein the light beam emitted by the slit can pass through the film to be tested and enter the line scan camera. The size of the lens of the line scan camera is defined as W, and the aperture value used by the line scan camera is defined as F, and the vertical distance between the film to be tested and the light source device is defined as L1, and the line scan phase The vertical distance between the machine and the film to be tested is defined as L2, and the width of the slit is defined as D, then D≧L1/L2*W/F.

In order to achieve the above object, the present invention also provides a detection system for detecting a film to be tested, and the detection system comprises: a line scan camera, a light source device and a carrier device. The light source device is located below the line scan camera, and the light source device includes a light exit surface, and the light exit surface is disposed in a direction facing the line scan camera. The carrier device is located between the line scan camera and the light source device, and the carrier device can carry the film to be tested. Wherein, the size of the lens of the line scan camera is defined as W, the aperture value used by the line scan camera is defined as F, the vertical distance between the film to be tested and the light source device is defined as L1, and the line scan camera and the film to be tested are perpendicular to each other. The distance is defined as L2, and the width of the illuminating surface is defined as D, then D≧L1/L2*W/F.

The beneficial effect of the creation may be that the detection effect of the detection system can be effectively improved.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are only for reference and description, and are not intended to limit the creation.

1‧‧‧Detection system

10‧‧‧ line scan camera

20‧‧‧Light source device

201‧‧‧Glossy surface

30, 30', 30" ‧ ‧ shading unit

301‧‧‧Shading Department

302‧‧‧Fixed Department

31‧‧‧Lighting parts

40‧‧‧Carriage

A‧‧‧Lock Firmware

S‧‧ slit

F‧‧‧ film to be tested

L1, L2‧‧‧ distance

D‧‧‧ slit width

Figure 1 is a schematic diagram of the detection system of the present invention.

FIG. 2 is a partially exploded perspective view of the light source device and the shading unit of the detection system of the present invention.

FIG. 3 is a schematic diagram of a combination of a light source device and a shading unit of the detection system of the present invention.

4 is a schematic view of another embodiment of a light source device and a shading unit of the detection system of the present invention.

FIG. 5 is a schematic diagram of still another embodiment of a light source device and a shading unit of the detection system of the present invention.

Fig. 6 is a gray scale diagram outputted by the detection system of the present invention.

Fig. 7 is a gray scale diagram of the conventional detection system output under the same conditions as Fig. 6.

The following describes the implementation of the detection system of the present invention by a specific specific example, and those skilled in the art can easily understand other advantages and effects of the present invention by the contents disclosed in the present specification. The present invention may also be implemented or applied by other specific examples. The details of the present specification may also be based on different viewpoints and applications, and various modifications and changes may be made without departing from the spirit of the present invention. The drawing of this creation is only a brief description, and is not depicted in actual size, that is, the actual size of the relevant composition is not reflected, which will be described first. The following embodiments are intended to further explain the scope of this creation, but do not limit the scope of the creation in any way.

Please refer to FIG. 1 to FIG. 3 together, which is a schematic diagram of a first embodiment of the detection system of the present invention. As shown, the detection system 1 includes a line scan camera 10, a light source unit 20, a shading unit 30, and a carrier unit 40. The light source device 20 is located below the line scan camera 10, and the light source device 20 includes a light exit surface 201. The light exit surface 201 is disposed in a direction facing the line scan camera 10, that is, the light source device 20 can be configured by the light exit surface 201. A light beam is emitted to serve as a light source for the line scan camera 10 to capture an image. In a practical application, the light source device 20 may use a plurality of light emitting diodes as a source of the light beam; the light source device 20 may be provided with a light guide plate, a diffusion sheet, and the like in the light emitting surface 201 to make the light emitting surface 201 Each position has a uniform light-emitting brightness; the appearance of the light source device 20 and the appearance of the light-emitting surface 201 can be changed according to requirements, and are not limited herein.

The light-shielding unit 30 may include two light-shielding members 31, and the shape of each of the light-shielding members 31 may be designed to correspond to the appearance of the light source device 20. For example, in the embodiment, the light source device 20 is substantially in the shape of a rectangular parallelepiped. The two light blocking members 31 may correspond to an L-shaped member. The two light-shielding members 31 are detachably fixed to the light source device 20; in practical applications, the light-shielding members 31 may be fixed to the light source device 20 by using a plurality of fasteners A (for example, screws), but not limited thereto; In different applications, the light source device 20 and the two light blocking members 31 may respectively have corresponding engaging structures, and the two light blocking members 31 may be detachably fixed to the light source device 20 through the engaging structures. In different embodiments, each of the light shielding members 31 may also be in the form of a flat plate. The light-shielding members 31 can be directly fixed to the periphery of the light-emitting surface 201 or directly fixed to the light-emitting surface 201 by using a plurality of fasteners (for example, screws). The light shielding unit 30 may be directly bonded and glued to the light source device 20 according to actual needs, and is not limited to being detachably fixed to the light source device 20 .

The two light-shielding members 31 fixed to the light source device 20 respectively shield a portion of the light-emitting surface 201 of the light source device 20, and the two light-shielding members 31 are formed with a slit S at a position facing the light source device 20, whereby the light source device 20 The emitted light beam can only be emitted through the slit S. Preferably, the side walls of the two light blocking members 31 opposite to each other (corresponding to the two mutually opposite side walls forming the slit S) are disposed in parallel with each other, and the side walls of the light blocking members 31 facing each other are parallel to the light source device 20 The length direction (ie, the length direction of the slit S in the drawing); in other words, the two light blocking members 31 and the light exiting surface 201 of the light source device 20 together form a rectangular parallelepiped pocket, that is, the slit S. In the present embodiment, when the user needs to use the slits S of different widths, only one single light blocking member 31 can be replaced, and the width of the slit S formed between the two light blocking members 31 can be changed.

The carrier device 40 is disposed between the line scan camera 10 and the light source device 20, and the carrier device 40 is configured to carry the film F to be tested, and the carrier device 40 enables the film F to be tested to move in a specific direction at a predetermined speed. On the other hand, the partial light beam emitted from the light source device 20 through the slit S can enter the line scan camera 10 through the film F to be tested. The line scan camera 10 and the light source device 20 can cooperate with the carrier device 40, and the film F to be tested is scanned to detect whether the film F to be tested is defective (for example, broken holes, oil stains, etc.).

As shown in FIG. 4, in different embodiments, the shielding unit 30' may include a shielding portion 301 and at least two fixing portions 302. The two opposite sides of the shielding portion 301 are respectively connected to the two fixing portions 302. The shielding portion 301 has the slit S, and when the light shielding unit 30' is fixed to the light source device 20, the shielding portion 301 can correspond to the light emitting surface 201. Specifically, the shielding portion 301 and the two fixing portions 302 may be integrally formed components, and the two fixing portions 302 may be through a plurality of locking components A (for example Screws are detachably fixed to the side walls on both sides of the light exiting surface 201. Different from the foregoing embodiment, the relevant user may directly replace the entire shading unit 30 according to the requirements of different slit S widths.

As shown in FIG. 5, in another embodiment, the light shielding unit 30" may be an opaque layer coated on the light exit surface 201 (please refer to FIG. 2), and the area not covered by the opaque layer, That is, correspondingly formed into the slit S, the width of each section of the slit S can be more effectively controlled by the manner of coating. Of course, the material of the opaque layer must be a high temperature resistant material to avoid The mass change occurs under the high temperature irradiation of the light source device 20.

As shown in FIG. 1, the lens size of the line scan camera 10 is defined as W, the aperture value used by the line scan camera 10 is defined as F, and the vertical distance between the film F to be tested and the light source device 20 is defined as L1, and the line scan camera 10 The vertical distance from the film F to be tested is defined as L2, and the width of the slit is defined as D. In the case of D≧L1/L2*W/F, the line scan camera 10 can relatively accurately detect the film to be tested. F's 瑕疵. The following is the actual application data:

More specifically, please refer to FIG. 6 and FIG. 7 together. FIG. 6 and FIG. 7 respectively show the detection system 1 and the existing detection system of the present invention, in the film to be tested (the opaque film used in the lithium battery here is Example) A gray scale diagram outputted after being scanned by the line scan camera 10 when there is a hole and oil stain (for example, oil, lubricating oil, etc. dripped from the relevant production machine) (the vertical axis is represented by a gray scale value, and the horizontal axis is represented by a horizontal axis) For the virtual location).

As shown in the figure, the detection system 1 of the present invention and the existing detection system detect the position where the film F to be tested has a hole (ie, the tip on the left side in FIGS. 6 and 7). In the case of the peak pattern, a peak can be clearly displayed in the gray scale map, and the relevant tester can judge that the film to be tested has a flaw in the specific position.

However, in the existing detection system, in the position where the film F to be tested has oil stain, corresponding to the gray scale diagram, only the peaks which are substantially the same as the broken holes can be presented; in other words, the existing detection system is detecting the film to be tested. At the time, the relevant personnel cannot correctly judge from the gray scale diagram of the output whether the flaw existing on the film to be tested belongs to oil stain or broken hole, and the relevant personnel must correspond to the case of ensuring the yield of the film to be tested. The section showing the peak in the grayscale diagram is marked as a defect. In actual implementation, some oil stains may gradually evaporate in the subsequent processing procedures. Therefore, relevant personnel who will perform subsequent re-confirmation will not find that the marked position is defective, and thus it may not be confirmed whether it is a detection system. Misjudgment.

As shown in FIG. 6, the detection system 1 of the present invention can clearly show different peaks in the gray scale diagram when the film F to be tested has both broken holes and oil stains, that is, a relatively high peak in the figure (Fig. The left spike pattern in the middle is the position corresponding to the broken hole, and the relatively low peak in the figure (the right spike pattern in the figure) corresponds to the position of the oil stain. In this way, the relevant personnel can correctly determine the actual state of the film F to be tested, thereby effectively solving the related problems that the prior detection system cannot effectively exhibit the difference between the hole and the oil in the gray scale diagram.

In particular, in a particular embodiment, the detection system 1 of the present invention may not include the aforementioned shading unit 30, and the width of the light-emitting surface 201 of the light source device 20 may be according to the aforementioned formula D≧L1/L2. *W/F is designed. In other words, in the foregoing embodiment, the width of the light-emitting surface of the light source device 20 is changed by the light-shielding unit 30, and in other embodiments, when the light source device 20 is produced, according to the above formula D≧L1/L2. *W/F calculates the width of the slit S to determine the width of the light exit surface. Preferably, the light exit surface is rectangular. Thus, the relevant user can form the slit S without further passing through the post-processing (ie, the foregoing embodiment).

The above description is only a preferred and feasible embodiment of the present invention, and thus does not limit the scope of the patent of the creation, so the equivalent technique of using the creation specification and the schema content is used. Changes are included in the scope of this creation.

1‧‧‧Detection system

10‧‧‧ line scan camera

20‧‧‧Light source device

30‧‧‧ shading unit

31‧‧‧Lighting parts

40‧‧‧Carriage

F‧‧‧ film to be tested

L1, L2‧‧‧ distance

D‧‧‧ slit width

Claims (10)

A detection system for detecting a film to be tested, the detection system comprising: a line scan camera; a light source device correspondingly located below the line scan camera, the light source device comprising a light exit surface, the light exit surface facing the a light-shielding unit disposed on the light-emitting surface of the light source device, the light-shielding unit includes a slit, the light beam of the light source device can only be emitted through the slit to the light-shielding unit; The device is located between the line scan camera and the light source device, and the carrier device can carry the film to be tested; wherein the light beam emitted by the slit can enter the line scan camera through the film to be tested; The size of the lens of the line scan camera is defined as W, and the aperture value used by the line scan camera is defined as F, and the vertical distance between the film to be tested and the light source device is defined as L1, the line scan camera and the film to be tested The vertical distance between each other is defined as L2, and the width of the slit is defined as D, then D≧L1/L2*W/F. The detection system of claim 1, wherein the shading unit is detachably fixed to the light source device. The detection system of claim 2, wherein the light shielding unit comprises two light shielding members, and the two light shielding members are detachably fixedly disposed on the light source device, and the two light shielding members are fixedly disposed on the light source device. The two light blocking members are formed with the slit at a position corresponding to the light emitting surface. The detection system of claim 3, wherein each of the light shielding members is located at a portion of the light exiting surface corresponding to the light exiting surface of the shielding portion, and a portion of the light beam emitted by the light emitting surface is shielded by the two light blocking members. The detecting system according to claim 3, wherein the side walls of the two light blocking members forming the slit are parallel to each other. The detection system of claim 1, wherein the light shielding unit is an opaque layer coated on the light exiting surface. The detection system of claim 1, wherein the shading unit comprises a shielding portion and at least two fixing portions, and two opposite sides of the shielding portion are respectively connected to the two fixing portions, the shielding portion having the narrow portion When the light shielding unit is fixed to the light source device, the shielding portion is correspondingly located on the light emitting surface. The detecting system of claim 7, wherein each of the fixing portions is detachably fixed to the light source device. A detection system for detecting a film to be tested, the detection system comprising: a line scan camera; a light source device correspondingly located below the line scan camera, the light source device comprising a light exit surface, the light exit surface facing the a directional setting of the line scan camera; and a carrier device between the line scan camera and the light source device, the carrier device for carrying the film to be tested; wherein the lens size of the line scan camera is defined as W, The aperture value used by the line scan camera is defined as F, and the vertical distance between the film to be tested and the light source device is defined as L1, and the vertical distance between the line scan camera and the film to be tested is defined as L2, and the light exit surface The width is defined as D, then D≧L1/L2*W/F. The detection system of claim 9, wherein the light exiting surface is rectangular.