Hole site detection platform and PCB detection equipment

Abstract

The utility model belongs to the technical field of PCB detection, and particularly relates to a hole site detection platform and PCB detection equipment. The hole site detection platform comprises a base, a supporting plate and a light-transmitting plate, the base is used for being installed on a workbench of the PCB detection equipment, and the supporting plate is installed on the base; a first light-transmitting hole and a second light-transmitting hole are formed in the supporting plate, the first light-transmitting hole and the second light-transmitting hole are communicated with each other, the light-transmitting plate is embedded in the first light-transmitting hole, the light-transmitting plate is exposed out of the second light-transmitting hole, and the light-transmitting plate is used for transmitting light to a material plate placed on the light-transmitting plate. The light-transmitting plate has good light-transmitting performance, so that light rays emitted by the light source can smoothly penetrate through and irradiate a material plate placed on the light-transmitting plate, the light rays can clearly illuminate an area, needing to be detected, on the material plate after penetrating through the light-transmitting plate, the interior of a back drilling hole becomes clear and visible, an optical detection mechanism of the PCB detection equipment can conveniently detect the back drilling hole, and the detection efficiency of the PCB detection equipment is improved. And detection errors are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of PCB inspection technology, and in particular relates to a hole position detection platform and PCB inspection equipment. Background Technology

[0002] Back drilling refers to drilling holes to a specified depth at designated locations on a PCB product. It has strict depth requirements and does not require drilling through the entire surface. It is primarily used to disconnect surface layer connections, resolve short circuits between the hole and the surface metal substrate or structural components, and prevent signal transmission interference. Back drilling can also be used to process stepped holes and blind vias.

[0003] When inspecting PCB back-drilled holes, the PCB on the inspection platform is flattened by a pressing mechanism. However, due to insufficient light source on the inspection platform, it is difficult to capture the edge of the back-drilled hole, resulting in unclear imaging, poor accuracy and stability, and easy errors in the inspection results. This can lead to the judgment of unqualified products or the omission of unqualified products in actual use, thus affecting the accuracy of the equipment inspection. Utility Model Content

[0004] The technical problem to be solved by this utility model is: to provide a hole position detection platform and PCB inspection equipment to address the problem of insufficient light source and easy error in detection results on existing detection platforms.

[0005] To solve the above-mentioned technical problems, on the one hand, this utility model provides a hole position detection platform, including a support member and a light-transmitting plate. The support member is provided with a first light-transmitting hole and a second light-transmitting hole, which are interconnected. The light-transmitting plate is embedded in the first light-transmitting hole and exposed from the second light-transmitting hole. The light-transmitting plate is used to transmit light irradiated thereon to a material plate placed on the light-transmitting plate.

[0006] Optionally, the support plate includes a first support plate and a second support plate, the second support plate is installed on the side of the first support plate near the base, the first light-transmitting hole is disposed on the first support plate, and the second light-transmitting hole is disposed on the second support plate;

[0007] The surface of the light-transmitting plate near the base abuts against the second support plate.

[0008] Optionally, the first support plate includes a plurality of protrusions and a plurality of recesses, the plurality of protrusions and the plurality of recesses being alternately arranged, at least some of the protrusions being located at the corners of the first support plate, and the recesses being located between two adjacent corners of the first support plate.

[0009] Optionally, the hole position detection platform further includes multiple pressure blocks, which are spaced apart along the outer edge of the light-transmitting plate. The pressure blocks are located on the side of the light-transmitting plate away from the base in the thickness direction, and the second support plate is located on the side of the light-transmitting plate close to the base in the thickness direction.

[0010] Optionally, the hole position detection platform further includes multiple positioning elements, which are installed on the side surface of the light-transmitting plate opposite to the support member, and the multiple positioning elements surround to form an area for placing the material plate.

[0011] Optionally, the plurality of positioning elements includes at least a first positioning element and a second positioning element, wherein the first positioning element is disposed on one side of the light-transmitting plate along a first direction, and the second positioning element is disposed on one side of the light-transmitting plate along a second direction;

[0012] The first direction and the second direction are not parallel and do not coincide.

[0013] Optionally, the light-transmitting plate includes optical glass and a glass film, the glass film being attached to the surface of the optical glass facing away from the support member.

[0014] On the other hand, this utility model embodiment provides a PCB inspection device, including an optical inspection mechanism, a pressing mechanism, a lifting mechanism, and a hole position detection platform as described above. The lifting mechanism can drive the pressing mechanism to move up and down, so that the pressing mechanism presses on the hole position detection platform or detaches from the hole position detection platform.

[0015] The optical inspection mechanism is used to inspect the material plate on the light-transmitting plate.

[0016] Optionally, the optical inspection mechanism includes a first light source and a second light source, wherein the first light source is disposed below the light-transmitting plate and the second light source is disposed above the pressing mechanism.

[0017] Optionally, the support member is provided with a guide shaft, which is used to engage with the pressing mechanism when the pressing mechanism presses against the hole detection platform;

[0018] And / or,

[0019] The support member is provided with a buffer, which is used to buffer the pressing mechanism.

[0020] The hole detection platform provided in this embodiment of the utility model has a light-transmitting plate with good light transmission performance, which allows light to pass through smoothly and illuminate the material board placed on it. After passing through the light-transmitting plate, the light can clearly illuminate the area to be detected on the material board, making the inside of the back drill hole clearly visible. This facilitates the optical inspection mechanism of the PCB inspection equipment to inspect the back drill hole and reduces inspection errors. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a hole position detection platform provided in an embodiment of the present invention;

[0022] Figure 2 This is a cross-sectional view of a hole position detection platform provided in an embodiment of the present invention.

[0023] The reference numerals in the accompanying drawings are as follows:

[0024] 1. Base; 2. Support plate; 21. First support plate; 211. First light-transmitting hole; 212. Protrusion; 213. Recess; 214. Guide shaft; 215. Buffer; 22. Second support plate; 221. Second light-transmitting hole; 3. Light-transmitting plate; 4. Pressure block; 5. Positioning component; 51. First positioning component; 52. Second positioning component;

[0025] a) First direction; b) Second direction. Detailed Implementation

[0026] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] like Figures 1 to 2 As shown in the figure, an embodiment of the present invention provides a hole position detection platform, including a support member and a light-transmitting plate 3. The support member includes a base 1 and a support plate 2. The base 1 is used to install on the worktable of a PCB inspection equipment, and the support plate 2 is installed on the base 1. The base 1 can support the support plate 2 and also avoid the first light source below the light-transmitting plate 3.

[0028] The support plate 2 is provided with a first light-transmitting hole 211 and a second light-transmitting hole 221, which are interconnected. A light-transmitting plate 3 is embedded in the first light-transmitting hole 211 and protrudes from the second light-transmitting hole 221, allowing light to pass smoothly through the second light-transmitting hole 221 and illuminate the light-transmitting plate 3. The light-transmitting plate 3 is used to transmit the light illuminating it onto the material board placed on it. A first light source below the light-transmitting plate 3 provides light. The light-transmitting plate 3 has good light transmission performance, allowing the light emitted by the first light source to pass smoothly and illuminate the material board placed on it. This allows the light to clearly illuminate the area to be inspected on the material board after passing through the light-transmitting plate 3, making the inside of the back-drilled hole clearly visible. This facilitates the optical inspection mechanism of the PCB inspection equipment to inspect the back-drilled hole and reduces inspection errors.

[0029] In one embodiment, the material of the light-transmitting plate 3 is not limited to optical glass; any material with high strength, good wear resistance, and good light transmittance is acceptable.

[0030] In one embodiment, such as Figure 2 As shown, the support plate 2 includes a first support plate 21 and a second support plate 22, which are integrally formed. The second support plate 22 is mounted on the side of the first support plate 21 near the base 1. A first light-transmitting hole 211 is provided on the first support plate 21, and a second light-transmitting hole 221 is provided on the second support plate 22. The first light-transmitting hole 211 penetrates the first support plate 21 along its thickness direction, and the second light-transmitting hole 221 penetrates the second support plate 22 along its thickness direction, resulting in a rectangular structure for both the first and second support plates 21 and 22.

[0031] The surface of the light-transmitting plate 3 near the base 1 abuts against the second support plate 22. After the light-transmitting plate 3 is inserted into the first light-transmitting hole 211, the first support plate 21 surrounds the light-transmitting plate 3 and supports the light-transmitting plate 3 through the second support plate 22, which can firmly fix the light-transmitting plate 3 on the support plate 2 and ensure that it will not move at will during the detection process.

[0032] The inner surface of the second support plate 22 is closer to the central axis of the support plate than the inner surface of the first support plate 21. On the plane where the light-transmitting plate 3 is located, the cross-sectional area of ​​the first light-transmitting hole 211 is larger than the cross-sectional area of ​​the second light-transmitting hole 221, so that a step is formed at the connection between the first support plate 21 and the second support plate 22. This step can limit the installation position of the light-transmitting plate 3 on the support plate 2.

[0033] In one embodiment, such as Figure 1As shown, the first support plate 21 includes a plurality of protrusions 212 and a plurality of recesses 213, which are alternately arranged. At least some of the protrusions 212 are located at the corners of the first support plate 21, and the recesses 213 are located between two adjacent corners of the first support plate 21. Specifically, some of the protrusions 212 may be located at the corners of the first support plate 21, or all of the protrusions 212 may be located at the corners of the first support plate 21.

[0034] In this embodiment, besides reducing the weight of the support plate 2, the recessed portion 213, most importantly, allows the protrusion 212 to contact the light-transmitting plate 3 when it is assembled onto the support plate 2. The recessed portion 213 reduces the contact area between the first support plate 21 and the light-transmitting plate 3, thus reducing the possibility of uneven placement of the light-transmitting plate 3 on the support plate 2 due to level deviation of the upper surface of the first support plate 21, which could affect the detection effect of the back drilling of the material plate. During manufacturing, the recessed portion 213 also helps control the levelness accuracy of the first support plate 21.

[0035] In one embodiment, such as Figure 1 As shown, the hole position detection platform also includes multiple pressure blocks 4, which are spaced apart along the outer edge of the light-transmitting plate 3. The pressure blocks 4 are located on the side of the light-transmitting plate 3 away from the base 1 in the thickness direction, and the second support plate 22 is located on the side of the light-transmitting plate 3 close to the base 1 in the thickness direction. The position of the light-transmitting plate 3 can be fixed by the pressure blocks 4 to prevent the light-transmitting plate 3 from shifting during the test.

[0036] Specifically, during assembly, the pressure block 4 is provided with a first through hole, and the light-transmitting plate 3 is provided with a second through hole. The light-transmitting plate 3 is fixed by connecting the pressure block 4 to the second support plate 22 after the screw passes through the first through hole and the second through hole in sequence.

[0037] In one embodiment, such as Figure 1 As shown, the hole position detection platform also includes multiple positioning elements 5. These positioning elements 5 are installed on the surface of the light-transmitting plate 3 facing away from the support plate 2, and together they form an area for placing the material plate. When the material plate is placed on the light-transmitting plate 3, the area enclosed by the positioning elements 5 determines the placement position of the material plate, defining its placement range on the light-transmitting plate 3. This allows for the adaptation of material plates of different sizes or other materials to be inspected. By using the positioning elements 5 to accurately position and limit the material plate, it is possible to quickly place the material plate in the correct position, reducing adjustment time during placement and thus improving the efficiency and accuracy of the inspection.

[0038] In one embodiment, such as Figure 1As shown, the plurality of positioning elements 5 includes at least a first positioning element 51 and a second positioning element 52. The first positioning element 51 is disposed on one side of the light-transmitting plate 3 along the first direction a, and can constrain the material plate from the first direction a to prevent the material plate from excessively deviating or exceeding the predetermined range in the first direction a. The second positioning element 52 is disposed on one side of the light-transmitting plate 3 along the second direction b, and can constrain the material plate from the second direction b to prevent the material plate from excessively deviating or exceeding the predetermined range in the second direction b.

[0039] The first direction a and the second direction b are not parallel and do not coincide.

[0040] In this design, the first direction 'a' represents the length of the material plate, and the second direction 'b' represents the width of the material plate. The first positioning component 51 and the second positioning component 52 cooperate to position the material plate. This allows operators to place the material plate more quickly and accurately without repeatedly adjusting its position, effectively preventing positional deviations such as rotation or translation within the plane and ensuring the accuracy of the material plate's positioning.

[0041] When placing the material plate, the first positioning member 51 can be used as a reference. After one side of the material plate abuts against the first positioning member 51, the approximate position of the material plate in the first direction a can be determined. Then, based on the second positioning member 52, the material plate is pushed so that the other side of the material plate abuts against the second positioning member 52, thereby completing the positioning in the second direction b.

[0042] In one embodiment, the light-transmitting plate 3 includes optical glass and a glass film. The optical glass is placed on the support plate 2, and the glass film is attached to the surface of the optical glass facing away from the support. The glass film protects the optical glass, preventing scratches and ensuring that its light transmission performance remains unaffected, allowing light to always pass clearly and uniformly through the light-transmitting plate 3 and be projected onto the material plate. After a certain period of use, only the glass film needs to be replaced periodically.

[0043] On the other hand, this utility model embodiment provides a PCB inspection device, including a pressing mechanism, a lifting mechanism, and a hole position inspection platform as described in the above embodiment. The lifting mechanism can drive the pressing mechanism to move up and down, so that the pressing mechanism presses onto or detaches from the hole position inspection platform. The pressing mechanism is used to apply pressure to the board placed on the light-transmitting plate 3 of the hole position inspection platform to flatten the board and minimize the possibility of the board warping during the inspection process, which would affect the inspection results.

[0044] The optical inspection mechanism is used to inspect the material plate on the light-transmitting plate 3. After the material plate is flattened, the optical inspection mechanism begins to inspect the material plate on the light-transmitting plate 3. The light-transmitting plate 3 ensures sufficient light on the hole detection platform, enabling the acquisition of a clear image and reducing inspection errors.

[0045] In one embodiment, the optical inspection mechanism includes a first light source and a second light source. The first light source is positioned below the light-transmitting plate 3 and provides light to the hole detection platform, illuminating the lower surface of the material plate from small to large. The second light source is positioned above the pressing mechanism and provides light to the pressing mechanism, illuminating the upper surface of the material plate from top to bottom. By using two light sources to illuminate the back-drilled holes in the material plate, the edge capture of the back-drilled holes is improved, the imaging is clearer, and the accuracy of the product output results is increased.

[0046] In one embodiment, such as Figure 1 As shown, the support plate 2 of the support member is provided with a guide shaft 214. The guide shaft 214 is used to engage with the pressing mechanism when the pressing mechanism presses on the hole detection platform. The pressing mechanism is provided with a hole or bushing that engages with the guide shaft 214. While the lifting mechanism drives the pressing mechanism to move up and down, it provides precise motion guidance to reduce lateral offset and sway of the pressing mechanism.

[0047] In one embodiment, a buffer 215 is provided on the support plate 2 of the support member. The buffer 215 is used to buffer the pressing mechanism. When the pressing mechanism moves downward under the drive of the lifting mechanism and comes into contact with the hole detection platform, a certain impact force will be generated. The buffer 215 can make the force of the pressing mechanism on the support plate 2 and the material plate on the light-transmitting plate 3 more gradual and uniform, avoiding problems such as damage to the material plate, deformation of the support plate 2, or affecting the stability of the entire detection platform due to the instantaneous strong impact.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A borehole position detection platform, characterized in that, The device includes a support member and a light-transmitting plate. The support member is provided with a first light-transmitting hole and a second light-transmitting hole, which are interconnected. The light-transmitting plate is embedded in the first light-transmitting hole and protrudes from the second light-transmitting hole. The light-transmitting plate is used to transmit light illuminating it to a material plate placed on the light-transmitting plate.

2. The borehole position detection platform as described in claim 1, characterized in that, The support includes a support plate and a base. The support plate includes a first support plate and a second support plate. The second support plate is installed on the side of the first support plate near the base. The first light-transmitting hole is disposed on the first support plate, and the second light-transmitting hole is disposed on the second support plate. The surface of the light-transmitting plate near the base abuts against the second support plate.

3. The borehole position detection platform as described in claim 2, characterized in that, The first support plate includes a plurality of protrusions and a plurality of recesses, which are alternately arranged. At least some of the protrusions are located at the corners of the first support plate, and the recesses are located between two adjacent corners of the first support plate.

4. The borehole position detection platform as described in claim 2, characterized in that, The hole detection platform also includes multiple pressure blocks, which are spaced apart along the outer edge of the light-transmitting plate. The pressure blocks are located on the side of the light-transmitting plate away from the base in the thickness direction, and the second support plate is located on the side of the light-transmitting plate close to the base in the thickness direction.

5. The borehole position detection platform as described in claim 1, characterized in that, The hole detection platform also includes multiple positioning elements, which are installed on the surface of the light-transmitting plate away from the support member. The multiple positioning elements surround and form an area for placing the material plate.

6. The borehole location detection platform as described in claim 5, characterized in that, The plurality of positioning elements includes at least a first positioning element and a second positioning element, wherein the first positioning element is disposed on one side of the light-transmitting plate along a first direction, and the second positioning element is disposed on one side of the light-transmitting plate along a second direction; The first direction and the second direction are not parallel and do not coincide.

7. The borehole position detection platform as described in claim 1, characterized in that, The light-transmitting plate includes optical glass and a glass film, the glass film being attached to the surface of the optical glass facing away from the support member.

8. A PCB inspection device, characterized in that, The device includes an optical inspection mechanism, a pressing mechanism, a lifting mechanism, and a hole position detection platform as described in any one of claims 1-7. The lifting mechanism can drive the pressing mechanism to move up and down, so that the pressing mechanism presses against the hole position detection platform or detaches from the hole position detection platform. The optical inspection mechanism is used to inspect the material plate on the light-transmitting plate.

9. The PCB testing equipment as described in claim 8, characterized in that, The optical inspection mechanism includes a first light source and a second light source. The first light source is located below the light-transmitting plate, and the light emitted by the first light source can illuminate the light-transmitting plate. The second light source is located above the pressing mechanism.

10. The PCB inspection equipment as described in claim 8, characterized in that, The support is provided with a guide shaft, which is used to engage with the pressing mechanism when the pressing mechanism presses against the hole detection platform. And / or, The support member is provided with a buffer, which is used to buffer the pressing mechanism.

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