Internal light-emitting carrying platform

Abstract

The utility model discloses an internal light emitting platform deck, relates to the reinspection equipment technical field, including: a platform deck body, a light uniformizing plate and a light source, the platform deck body is internally provided with an installation cavity, the platform deck body is provided with a bearing plate at the top of the installation cavity, the bearing plate is provided with a plurality of adsorption holes communicated with the installation cavity, and the adsorption holes are communicated with the installation cavity. A vacuumizing pipeline communicated with the mounting cavity is arranged on the carrying table body, and the bearing plate is a transparent plate; when the carrying table is used, the light source is arranged in the carrying table body, and the light uniformizing plate is arranged above the light source, so that light from the light source uniformly penetrates through the carrying plate to light the circuit board, and the lighting effect is improved; the light source is arranged in the carrying table body, is closer to the circuit board on the bearing plate and is located in a closed environment, so that the lighting effect is better, the carrying table is suitable for finer defect detection, the occupied equipment installation space is smaller, and the overall size of the equipment is reduced due to the built-in light source.

Description

TECHNICAL FIELD

[0001] The utility model relates to recheck equipment technical field, concretely is a kind of inner luminescence platform. BACKGROUND

[0002] Printed Circuit Board (PCB) as the key basic components of various electronic devices, its quality plays a decisive role on the performance and reliability of the whole electronic device. Therefore, in the production process of circuit board, strict quality detection link is essential. At present, the detection technology for circuit board is various, and the common ones include manual visual inspection, automatic optical inspection (AOI), automatic X-ray detection (AXI) and the like.

[0003] The automatic optical inspection (AOI) technology is to use optical imaging system to collect the image of circuit board, and then compare and analyze the image processing algorithm with the preset standard image to judge whether the circuit board has defects. AOI technology overcomes some of the shortcomings of manual visual inspection to a certain extent, has high detection accuracy and efficiency, and can detect various appearance and part of hidden defects. However, AOI equipment also has limitations in practical application, for example, for some complex multilayer circuit boards, due to the inner layer circuit being covered by the outer layer, it is sometimes difficult to fully and accurately obtain the true situation of the inner layer circuit through optical imaging. Moreover, in the detection process, there may be misjudgment or omission due to factors such as lighting conditions, image acquisition angle, algorithm adaptability, etc., and further review is still needed to ensure the accuracy of the detection result. In view of the limitations of the above detection technologies, in the actual process of circuit board production, it is often necessary to recheck the circuit board after the initial detection to further improve the accuracy of the detection result and reduce the risk of defective products.

[0004] The recheck equipment for circuit board generally detects through optical camera, so it needs to process the circuit board with light to facilitate taking clearer results. Since the platform needs to adsorb the circuit board, the light source in the prior art is generally arranged outside the platform, such as arranging a light source that irradiates upward under the transparent platform to complete the light processing. However, since the light source is external, the distance between the light source and the circuit board is far, and the interval is the whole platform, the light processing effect on the circuit board is general, and the external light source will occupy more equipment space.

[0005] Therefore, there is an urgent need for an inner light-emitting platform. UTILITY MODEL CONTENTS

[0006] In view of the problems existing in the prior art, the utility model solves the problems by the following technical structure.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme:

[0008] An internal light-emitting carrier platform, comprising: a carrier platform body, a light uniformizing plate and a light source, the carrier platform body is provided with a mounting cavity, the carrier platform body is provided with a bearing plate on the top of the mounting cavity, the bearing plate is provided with a plurality of adsorption holes penetrating the mounting cavity, the carrier platform body is provided with a vacuum pumping pipeline communicating with the mounting cavity, and the bearing plate is a transparent plate.

[0009] The light uniformizing plate is arranged in the mounting cavity, and the light source is arranged below the light uniformizing plate.

[0010] Further features are,

[0011] The vacuum pumping pipeline is arranged at the bottom of the carrier platform body.

[0012] The light uniformizing plate divides the mounting cavity into upper and lower cavities, and air passages are arranged on the ring side of the light uniformizing plate to maintain the communication of the upper and lower cavities.

[0013] The ring plate is arranged on the ring side of the mounting cavity, the light uniformizing plate is arranged on the inner side of the ring plate, a plurality of air grooves extending from top to bottom are uniformly arranged on the inner side of the ring plate, and the plurality of air grooves constitute the air passages.

[0014] The mounting cavity is provided with a plurality of support blocks arranged in a rectangular array at the bottom, and the light uniformizing plate is arranged on the top of the plurality of support blocks.

[0015] The light source comprises a plurality of light beads uniformly distributed at the bottom of the mounting cavity.

[0016] The top surface of the bearing plate is provided with two scales extending in mutually perpendicular directions, and the top surface of the bearing plate is provided with two optical reference points facilitating defect positioning.

[0017] Further comprising a driving mechanism, the driving mechanism comprises a sliding frame, and the bottom of the carrier platform body is slidingly arranged in the sliding frame.

[0018] The driving mechanism further comprises a lead screw and a motor, the lead screw is rotationally arranged on the sliding frame, and the motor is used to drive the rotation of the lead screw.

[0019] The bottom of the carrier platform body is provided with a connecting piece, the connecting piece is sleeved on the lead screw and is in threaded connection with the lead screw.

[0020] The sliding frame is provided with a movable hole adapted to the movement of the vacuum pumping pipeline.

[0021] The above structure of the utility model can achieve the following beneficial effects:

[0022] In use, the circuit board is placed on the top surface of the bearing plate, vacuum is drawn in the mounting cavity through the vacuum pipeline, the circuit board is adsorbed on the top surface of the bearing plate, when the circuit board passes below the detection camera, the light source is arranged in the interior of the bearing body, and the light uniformizing plate is arranged above the light source, so that the light from the light source uniformly penetrates the bearing plate, the circuit board is lighted, and the lighting effect is improved; since the light source is arranged in the interior of the bearing body, the distance between the light source and the circuit board on the bearing plate is closer, and the light source is in a closed environment, so that the lighting effect is better, more delicate defect detection is adapted, and since the light source is built-in, the equipment installation space is smaller. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is a structural schematic diagram of a bearing mechanism in the present application;

[0024] Figure 2 FIG. 2 is an internal structural schematic diagram of the bearing mechanism in the present application;

[0025] Figure 3 FIG. 3 is a bottom structural schematic diagram of the bearing body in the present application;

[0026] Figure 4 FIG. 4 is a structural cross-sectional schematic diagram of the bearing mechanism in the present application;

[0027] Figure 5 FIG. 5 is a top structural schematic diagram of the bearing mechanism and the driving mechanism in the present application;

[0028] Figure 6 FIG. 6 is a bottom structural schematic diagram of the bearing mechanism and the driving mechanism in the present application.

[0029] In the figure: 1, bearing body; 11, bearing plate; 12, vacuum pipeline; 13, scale; 14, optical reference point; 15, support block; 2, light uniformizing plate; 3, light source; 4, ring plate; 41, air groove; 5, driving mechanism; 51, sliding frame; 52, screw rod; 53, motor. DETAILED DESCRIPTION

[0030] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0031] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification and in the claims of the present application and in the above description of the drawings are intended to cover the inclusion of not only the listed steps or units but also other steps or units not listed, or other steps or units that are inherent to the processes, methods, products, or devices.

[0032] The above description of the drawings is as follows Figures 1-6 The present application is further described in detail.

[0033] Reference Figures 1-4 An internal light-emitting carrier shown in the figure, including carrier body 1, light uniformity plate 2 and light source 3, the carrier body 1 is provided with mounting cavity, the carrier body 1 is provided with bearing plate 11 on the top of mounting cavity, the bearing plate 11 is provided with a plurality of adsorption holes through the mounting cavity, the carrier body 1 is provided with vacuum pipe 12 communicated with the mounting cavity, the bearing plate 11 is transparent plate material (such as light-transmitting acrylic plate, or made of PC plate, PETG plate and other materials);

[0034] The light uniformity plate 2 is arranged in the mounting cavity, and the light source 3 is arranged below the light uniformity plate 2, and the light uniformity plate 2 is used for making the light of the light source 3 uniformly shoot to the bearing plate 11.

[0035] Based on the above structure, when using, the circuit board is placed on the top surface of the bearing plate 11, the mounting cavity is vacuumized through the vacuum pipe 12, the circuit board is adsorbed on the top surface of the bearing plate 11, and when the circuit board passes below the detection camera, since the light source 3 is arranged in the interior of the carrier body 1, and the light uniformity plate 2 is arranged above the light source 3, so that the light from the light source 3 uniformly transmits through the bearing plate 11, the circuit board is lighted, and the lighting effect is improved; since the light source 3 is arranged in the interior of the carrier body 1, the distance between the circuit board on the bearing plate 11 is closer, and is in a closed environment (the carrier body 1 can be made of non-transparent material except the bearing plate 11), so that the lighting effect is better, and more delicate defect detection is adapted, and since the light source 3 is built-in, the equipment installation space occupied is smaller, and the overall volume of the equipment is reduced.

[0036] As Figures 2-4As shown, the vacuum pipeline 12 is arranged at the bottom of the platform body 1, and the processing benefit is that it does not occupy the space on both sides of the platform body 1. Since the vacuum pipeline 12 is arranged at the bottom of the platform body 1, in order to ensure the vacuum adsorption of the circuit board, the uniform plate 2 divides the mounting cavity into upper and lower cavities, and the ring side of the uniform plate 2 is provided with an air passage for maintaining the through of the upper and lower cavities. In this way, the air in the upper cavity is extracted through the air passage during vacuumizing, ensuring the realization of the vacuum adsorption function of the circuit board. In order to improve the efficiency of vacuumizing, the ring side of the mounting cavity is provided with a ring plate 4, and the uniform plate 2 is arranged on the inner side of the ring plate 4. The inner side of the ring plate 4 is uniformly provided with a plurality of air grooves 41 extending from top to bottom, and the plurality of air grooves 41 form an air passage. In this way, a plurality of air grooves 41 are uniformly arranged on the ring side of the uniform plate 2 (that is, the inner side of the ring plate 4 is in a continuous wave shape). During vacuumizing, the air in the upper cavity is uniformly extracted from the ring side of the uniform plate 2, improving the efficiency of vacuumizing and ensuring the uniformity of the negative pressure adsorption force applied to each part of the bottom surface of the circuit board, avoiding the problem that the adsorption force on one side of the circuit board is larger and the adsorption force on the other side is smaller at the same time.

[0037] Further optimization is that, as shown in Figure 2 In order to ensure the stability of the uniform plate 2 during operation, a plurality of rectangularly arranged support blocks 15 are arranged at the bottom of the mounting cavity, and the uniform plate 2 is arranged on the top of the plurality of support blocks 15, so that each part of the uniform plate 2 is uniformly supported, and the uniform plate 2 is prevented from moving during vacuumizing. In addition, the support blocks 15 can be made of light-transmitting materials to avoid interference with the light of the bottom light source 3.

[0038] Further optimization is that, as shown in Figure 4 The light source 3 includes a plurality of light beads uniformly distributed at the bottom of the mounting cavity, and the plurality of light beads are densely distributed below the uniform plate 2, so as to further improve the lighting efficiency of the circuit board.

[0039] As shown in Figure 5 In order to facilitate positioning of defects during camera detection, the top surface of the bearing plate 11 is provided with two scales 13 extending in mutually perpendicular directions, and the top surface of the bearing plate 11 is provided with two optical reference points 14 for facilitating positioning of defects, so as to facilitate positioning of defects of the circuit board.

[0040] As shown in Figure 5 and Figure 6As shown, in order to complete the drive of the carrier body 1, the application also includes a driving mechanism 5, the driving mechanism 5 includes a sliding frame 51, a lead screw 52 and a motor 53, the sliding frame 51 is arranged on the equipment, the lead screw 52 is rotationally arranged on the sliding frame 51, and the motor 53 is used to drive the lead screw 52 to rotate;The carrier body 1 is slidably arranged in the sliding frame 51, and the bottom of the carrier body 1 is provided with a connecting piece, the connecting piece is sleeved on the lead screw 52 and is in threaded connection with the lead screw 52, so that the carrier body 1 is slidably arranged on the sliding rail on the sliding frame 51, the lead screw 52 is driven to rotate by the motor 53, so that the carrier body 1 horizontally slides and reciprocates below the camera 21;And the sliding frame 51 is provided with a movable hole adapted to the movement of the vacuum pipe 12, so as to avoid interference.

[0041] The working principle of the utility model is: when using, the circuit board is placed on the top surface of the bearing plate 11, the mounting cavity is vacuumized through the vacuum pipe 12, the circuit board is adsorbed on the top surface of the bearing plate 11, when the circuit board passes below the detection camera, since the light source 3 is arranged in the inside of the carrier body 1, and the light uniforming plate 2 is arranged above the light source 3, so that the light from the light source 3 uniformly transmits through the bearing plate 11, the circuit board is lighted, and the lighting effect is improved;Since the light source 3 is arranged in the inside of the carrier body 1, the distance between the circuit board on the bearing plate 11 is closer, and is in a closed environment, so the lighting effect is better, and more delicate defect detection is adapted, and since the light source 3 is built-in, the equipment installation space occupied is smaller, and the overall volume of the equipment is reduced.

[0042] The above is only the preferred embodiment of the application, and the utility model is not limited to the above examples. It can be understood that other improvements and changes directly derived or thought by those skilled in the art without departing from the spirit and concept of the utility model should be considered to be included in the protection scope of the utility model.

Claims

1. An internally luminescent carrier, characterized in that Include: The platform body (1), the light uniform plate (2) and the light source (3), the mounting cavity is provided in the platform body (1), the bearing plate (11) is provided on the top of the mounting cavity of the platform body (1), a plurality of adsorption holes are provided on the bearing plate (11) and are communicated with the mounting cavity, the bearing plate (11) is a transparent plate material, the light uniform plate (2) is arranged in the mounting cavity, the light source (3) is arranged below the light uniform plate (2), and the light uniform plate (2) is used to make the light of the light source (3) uniformly radiate to the bearing plate (11). The vacuum pipeline (12) is arranged at the bottom of the platform body (1).

2. An internally illuminated platform according to claim 1, wherein: The light uniform plate (2) divides the mounting cavity into upper cavity and lower cavity, and the ring side of the light uniform plate (2) is provided with an air passage for maintaining the through connection of the upper cavity and the lower cavity.

3. An internally illuminated plinth according to claim 2, wherein: The ring plate (4) is arranged on the ring side of the mounting cavity, the light uniform plate (2) is arranged on the inner side of the ring plate (4), a plurality of air grooves (41) extending from top to bottom are uniformly arranged on the inner side of the ring plate (4), and the plurality of air grooves (41) constitute the air passage.

4. An internally illuminated plinth according to claim 3, wherein: The bottom of the mounting cavity is provided with a plurality of rectangularly arranged support blocks (15), and the light uniform plate (2) is arranged on the top of the plurality of support blocks (15).

5. An internally illuminated platform according to claim 3, wherein: The light source (3) includes a plurality of light beads uniformly distributed on the bottom of the mounting cavity.

6. An internally illuminated platform according to claim 1, wherein: The top surface of the bearing plate (11) is provided with two scales (13) extending towards mutually perpendicular directions, and the top surface of the bearing plate (11) is provided with two optical reference points (14) for facilitating defect positioning.

7. An internally illuminated platform according to claim 1, wherein: Further include driving mechanism, the driving mechanism (5) includes sliding frame (51), and the bottom of the platform body (1) is slidably arranged in the sliding frame (51).

8. An internally illuminated platform according to claim 1, wherein: The driving mechanism (5) further includes a lead screw (52) and a motor (53), the lead screw (52) is rotatably arranged on the sliding frame (51), and the motor (53) is used to drive the lead screw (52) to rotate.

9. An internally illuminated plinth according to claim 8, wherein: The bottom of the platform body (1) is provided with a connecting piece, the connecting piece is sleeved on the lead screw (52) and is in threaded connection with the lead screw (52). The sliding frame (51) is provided with a movable hole adapted to the movement of the vacuum pipeline (12).

10. An internally illuminated platform according to claim 8, wherein: ​

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