Plate warping detection equipment

Abstract

The utility model relates to the technical field of detection equipment, in particular to plate warpage detection equipment. The plate warpage detection equipment comprises a conveying part which is used for horizontally conveying a plate from a first position to a second position, and a preset detection position is arranged between the first position and the second position; the first driving part is used for driving the conveying part to ascend or descend; the reference table is arranged below the conveying part, and when the plate moves to a preset detection position, the first driving part drives the conveying part to descend so that the plate can fall on the reference table; and the first detection device is configured to pass through the position above the reference table and is used for detecting height information between the first detection device and the reference table and height information between the first detection device and the plate. According to the scheme, the conveying piece is driven by the first driving piece to descend so that the plate can fall on the reference table to be subjected to warping degree measurement, and due to the fact that the flatness of the reference table is high, when the first detection device measures the warping degree of the plate on the reference table, the measurement precision is higher.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a board warping testing device. Background Technology

[0002] Patent CN201410811271.5 discloses "A board warpage detection machine and its detection method", which includes a frame, a first feeding device, a control device, a detection device, a sorting device, etc. The PCB board or copper-clad board to be tested is placed on the first feeding device, which conveys the PCB board or copper-clad board forward. When it passes the detection device, the detection device can scan the PCB board or copper-clad board and transmit the scanned board thickness information to the control device. After obtaining the board thickness information, the control device can calculate the board thickness curve of the PCB board or copper-clad board, and then calculate the board warpage through a specific software algorithm and warpage definition.

[0003] However, the above-mentioned testing machine has the following problems during use: Since the first feeding device drives the PCB board or copper-clad board to move continuously through the cooperation of the conveyor belt and other structures, the conveyor belt is not very flat during operation. When measuring the warpage of the PCB board or copper-clad board directly on the conveyor belt, the unevenness of the conveyor belt can easily cause detection errors, affecting the accuracy of the warpage measurement of the PCB board or copper-clad board. Utility Model Content

[0004] The purpose of this invention is to propose a board warpage detection device, which aims to solve the technical problem that existing board warpage detection machines directly measure the warpage of PCB boards or copper-clad laminates on the conveyor belt, which easily leads to poor measurement accuracy.

[0005] To achieve the above objectives, this utility model proposes a board warping detection device, including a conveyor for horizontally conveying a board from a first position to a second position, wherein a preset detection position is provided between the first position and the second position;

[0006] A first driving component is used to drive the conveyor to rise or fall;

[0007] A reference platform is positioned below the conveyor. When the plate moves to the preset detection position, the first drive unit drives the conveyor to descend so that the plate falls onto the reference platform.

[0008] A first detection device is configured to pass over the reference platform and detect the height information between the first detection device and the reference platform, as well as the height information between the first detection device and the plate.

[0009] Preferably, the device further includes a second detection device disposed at the feed end of the conveyor, the second detection device being used to detect the thickness of the plate.

[0010] Preferably, the side of the conveyor is also provided with a sensor. When the sensor detects that the plate has reached the preset detection position, it sends a signal, and the conveyor responds to the signal and stops moving.

[0011] Preferably, the reference platform has an adjustable clearance for the lifting and lowering movement of the conveyor component.

[0012] Preferably, the conveying component includes a second driving component, a conveyor belt, a driving wheel, and a driven wheel. The output end of the second driving component is connected to the driving wheel, and the driving wheel and the driven wheel are connected by the conveyor belt. The conveyor belt is used to place the plate.

[0013] Preferably, the board warping detection device further includes a telescopic rod, a mounting plate, and a support member. The output end of the first driving member is connected to the mounting plate, the top end of the telescopic rod is connected to the mounting plate, and the movement trends of the first driving member and the telescopic rod are synchronized. The mounting plate is provided with the support member, and the support member is connected to the conveying member, so that when the first driving member and the telescopic rod rise and fall synchronously, the mounting plate, the support member, and the conveying member rise and fall synchronously.

[0014] Preferably, the first detection device includes a plurality of line-scan lasers movably disposed above the conveyor.

[0015] Preferably, the first detection device is movably mounted on the conveyor via a moving device;

[0016] The moving device includes a gantry frame, a drive assembly, a guide rail, and a slider. The drive assembly is connected to the gantry frame in a transmission manner. The slider is provided on the gantry frame and is movably mounted on the guide rail so that the drive assembly drives the gantry frame to move along the guide rail.

[0017] Preferably, the second detection device includes a plurality of spectral lasers disposed at the feed end of the conveyor.

[0018] Preferably, the device further includes an alarm, which is used to sound an alarm when the warpage of the board exceeds a preset threshold.

[0019] The board warpage detection device disclosed in this utility model has the following beneficial effects: This solution does not directly measure the warpage of the board on the conveyor, but adds a first driving component and a reference platform. The first driving component can drive the conveyor to rise or fall. When the board moves to the preset detection position, the first driving component drives the conveyor to fall so that the board lands on the reference platform. Since the reference platform itself has high flatness, it will not affect the measurement data of the board warpage. When the first detection device measures the warpage of the board on the reference platform, the measurement accuracy is higher. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the plate warping detection equipment of this utility model;

[0022] Figure 2 This is a schematic diagram of the conveyor component descending in the plate warping detection equipment of this utility model;

[0023] Figure 3 This is a front view structural diagram of the plate warping detection equipment of this utility model;

[0024] Figure 4 This is a top view schematic diagram of the plate warping detection equipment of this utility model;

[0025] Figure 5 This is a side view of the panel warpage detection device of this utility model.

[0026] Figure 6 This is a schematic diagram of the reference platform in the plate warping detection equipment of this utility model.

[0027] In the attached diagram: 1-Conveying component, 11-Second driving component, 12-Conveyor belt, 13-Driven wheel, 2-Plate, 3-First driving component, 31-Telescopic rod, 32-Mounting plate, 33-Support component, 4-Base platform, 41-Movement clearance, 5-First detection device, 51-Line scan laser, 6-Second detection device, 61-Spectral laser, 7-Moving device, 71-Gantry frame, 72-Guide rail.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that if any directional indication is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0031] like Figures 1 to 6 As shown, a board warping detection device includes a conveyor 1, which is used to horizontally convey a board 2 from a first position to a second position, and a preset detection position is provided between the first position and the second position;

[0032] The first driving component 3 is used to drive the conveying component 1 to rise or fall;

[0033] The reference platform 4 is located below the conveyor 1. When the plate 2 moves to the preset detection position, the first driving member 3 drives the conveyor 1 to descend so that the plate 2 falls on the reference platform 4.

[0034] The first detection device 5 is configured to pass over the reference platform 4 and to detect the height information between the first detection device 5 and the reference platform 4, as well as the height information between the first detection device 5 and the plate 2.

[0035] The board warpage detection equipment in this solution is particularly suitable for measuring the warpage of boards such as steel plates, PCBs, or copper-clad laminates.

[0036] Specifically, the conveyor 1 continuously drives the plate 2 to move horizontally, transporting it from a first position (equivalent to the infeed end) to a second position (equivalent to the discharge end). During this horizontal transport, the warp of the plate 2 needs to be detected. Notably, this solution does not directly measure the warp on the conveyor 1; instead, a first drive 3 and a reference platform 4 are added. The first drive 3 can drive the conveyor 1 to rise or fall. When the plate 2 moves to the preset detection position, the first drive 3 drives the conveyor 1 to fall, causing the plate 2 to land on the reference platform 4. Typically, the reference platform 4 is a single piece of marble platform. Due to its high flatness, it does not affect the measurement data of the warp of the plate 2. Therefore, the first detection device 5 achieves higher measurement accuracy when measuring the warp of the plate 2 on the reference platform 4. The first detection device 5 can be movably mounted on the conveyor 1 or the reference platform 4.

[0037] The specific detection process is as follows: The first detection device 5 detects the height information between itself and the reference platform 4. For example, if the detected height data is 10.5mm, it is marked as 0 on the coordinate system. In the area on the reference platform 4 where the plate 2 is located, because the distance between the first detection device 5 and the plate 2 is closer, the data detected by the first detection device 5 when passing over it will differ from the height information between itself and the reference platform 4. Since the warp of the plate 2 varies at different locations, the first detection device 5 can obtain multiple different height values ​​when passing over different locations on the plate 2. For example, compared to 0 on the coordinate system, the detected data could be 1, 0.96, 1.05, etc., thus obtaining the warp status of the entire plate 2. After detecting the warp status of the plate 2, the first drive component 3 drives the conveyor component 1 and the plate 2 to rise, allowing the plate 2 to continue to be conveyed horizontally along the conveyor component 1, resulting in higher efficiency.

[0038] Furthermore, it also includes a second detection device 6 disposed at the feed end of the conveyor 1, the second detection device 6 being used to detect the thickness of the plate 2.

[0039] In this embodiment, the thickness of the plate 2 is measured by setting a second detection device 6 at the feeding end of the conveyor 1. The second detection device 6 is set above and below the plate 2 respectively. During the thickness measurement process, the plate 2 is usually clamped with a clamp. The installation positions of the second detection devices 6 above and below the plate 2 are fixed, and the distance between them is constant L1. When measuring the thickness, the plate 2 is clamped and not moved by the clamp. The distance L2 between the second detection device 6 above the plate 2 and the upper surface of the plate 2 is measured by the second detection device 6 below the plate 2, and the distance L3 between the second detection device 6 below the plate 2 and the upper surface of the plate 2 is measured by the second detection device 6. L1 is the specific thickness of the plate 2.

[0040] Furthermore, the side of the conveyor 1 is also provided with a sensor. When the sensor detects that the plate 2 has reached the preset detection position, it sends a signal, and the conveyor 1 responds to the signal and stops moving.

[0041] In this embodiment, a sensor is also provided on one or both sides of the conveyor 1. The sensor can be a photoelectric sensor or a contact sensor. The sensor in this solution can sense in real time whether the plate 2 on the conveyor 1 has reached the preset detection position. When the plate 2 is sensed to have reached the preset detection position, the sensor sends a positioning signal. The conveyor 1 receives the signal and stops moving. Then the first driving member 3 starts to drive the conveyor 1 to descend onto the reference platform 4.

[0042] Furthermore, the reference platform 4 is provided with a movable gap 41 for the lifting and lowering movement of the conveyor 1. In this design, the conveyor 1 can be a conveyor belt. To facilitate the transport of the plate 2, at least two conveyor belts are typically provided to continuously transport the plate 2. To facilitate the lifting and lowering movement of the conveyor belt, the reference platform 4 is provided with a movable gap 41 for the vertical lifting and lowering of the conveyor 1 (conveyor belt). The movable gap 41 corresponds to the number of conveyor 1s, and is typically slightly larger than the width of the conveyor belt, so as not to interfere with the lifting and lowering movement of the conveyor 1.

[0043] Furthermore, the conveying component 1 includes a second driving component 11, a conveyor belt 12, a driving wheel and a driven wheel 13. The output end of the second driving component 11 is connected to the driving wheel. The driving wheel and the driven wheel 13 are connected by transmission through the conveyor belt 12. The conveyor belt 12 is used to place the plate 2.

[0044] In this embodiment, as Figures 1 to 3 As shown, the second driving component 11 is usually a motor. The output shaft of the motor is connected to the driving wheel. The driving wheel is connected to several driven wheels 13 through a conveyor belt 12. When the motor drives the driving wheel to rotate, the driven wheels 13 rotate synchronously. The conveyor belt 12 sleeved on the outer wall of the driving wheel and the driven wheels 13 thus operates, completing the continuous conveying of the plate 2.

[0045] Furthermore, the board warping detection device also includes a telescopic rod 31, a mounting plate 32, and a support member 33. The output end of the first driving member 3 is connected to the mounting plate 32, and the top end of the telescopic rod 31 is connected to the mounting plate 32. The movement trends of the first driving member 3 and the telescopic rod 31 are synchronized. The support member 33 is provided on the mounting plate 32 and is connected to the conveyor 1. When the first driving member 3 and the telescopic rod 31 move up and down synchronously, the mounting plate 32, the support member 33, and the conveyor 1 move up and down synchronously.

[0046] like Figures 1 to 3As shown, the first driving component 3, in conjunction with the telescopic rod 31, the mounting plate 32, and the support component 33, drives the conveyor component 1 to rise or fall. The first driving component 3 is typically a telescopic cylinder. When the first driving component 3 rises or falls, the telescopic rod 31 rises or falls synchronously with it. At this time, the mounting plate 32 on the first driving component 3 and the telescopic rod 31 rises or falls synchronously, and the support component 33 and the conveyor component 1 on the mounting plate 32 also rise or fall accordingly. In actual production, the first driving component 3 is usually located in the middle of the bottom end of the mounting plate 32, while the telescopic rod 31 is located on both sides of the bottom end of the mounting plate 32. The movement trends of the first driving component 3 and the telescopic rod 31 remain synchronized.

[0047] Furthermore, the first detection device 5 includes a plurality of line-scan lasers 51 movably disposed above the conveyor 1.

[0048] In this embodiment, multiple line-scanning lasers 51 are used to acquire the height information between the line-scanning laser 51 and the reference stage 4, as well as the height information between the line-scanning laser 51 and the plate 2. Since a line laser is used, there are multiple sampling points at each position during scanning, and multiple data are collected in one scan. These data are analyzed, and the specific height information includes the height H1 between the line-scanning laser 51 and the reference stage 4, which is the point with the largest height since there is no plate 2 in this area; and the height information between the line-scanning laser 51 and the plate 2. When the surface of the plate 2 is warped, multiple different height information H2, H3, etc. will be obtained. Among the above height information, there is also a point with the smallest height. Subtracting the smallest height H2 from the largest height H1, this difference is the maximum warpage of the plate 2.

[0049] Furthermore, the first detection device 5 is movably mounted on the conveyor 1 via a moving device 7; the moving device 7 includes a gantry frame 71, a drive assembly, a guide rail 72, and a slider. The drive assembly is connected to the gantry frame 71 in a transmission manner. The slider is provided on the gantry frame 71 and is movably mounted on the guide rail 72 so that the drive assembly drives the gantry frame 71 to move along the guide rail 72.

[0050] In this embodiment, to ensure that the first detection device 5 can acquire height information of the plate 2 in different length directions, the first detection device 5 is mounted on the moving device 7. The moving device 7 drives the first detection device 5 to move along the x-axis. The cooperation between the slider and the guide rail 72 mainly serves a guiding function. When the drive assembly is running, it drives the gantry 71 to move back and forth along the guide rail 72, completing the sampling of height information at different positions of the plate 2. In actual production, the drive assembly can be composed of structures such as a motor, gears, and racks.

[0051] Furthermore, the second detection device 6 includes a plurality of spectral lasers 61 disposed at the feed end of the conveyor 1.

[0052] Furthermore, it also includes an alarm, which is used to sound an alarm when the warpage of the board 2 exceeds a preset threshold. When the first detection device 5 obtains the maximum warpage of the board 2, if the warpage of the board 2 exceeds the preset threshold, the alarm will promptly notify the user, so that the user can remove the non-compliant board 2.

[0053] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A board warpage detection device, characterized in that, include: A conveyor (1) is used to horizontally convey a plate (2) from a first position to a second position, and a preset detection position is provided between the first position and the second position; The first driving member (3) is used to drive the conveying member (1) to rise or fall; A reference platform (4) is set below the conveyor (1). When the plate (2) moves to the preset detection position, the first drive (3) drives the conveyor (1) to descend so that the plate (2) falls on the reference platform (4). The first detection device (5) is configured to pass over the reference stage (4) and detect the height information between the first detection device (5) and the reference stage (4) and the height information between the first detection device (5) and the plate (2).

2. The board warpage detection device according to claim 1, characterized in that, It also includes a second detection device (6) disposed at the feed end of the conveyor (1), the second detection device (6) being used to detect the thickness of the plate (2).

3. The board warpage detection device according to claim 1, characterized in that, The side of the conveyor (1) is also provided with a sensor. When the sensor detects that the plate (2) has reached the preset detection position, it sends a signal and the conveyor (1) responds to the signal and stops moving.

4. The board warpage detection device according to claim 1, characterized in that, The reference platform (4) has an opening (41) for the lifting and lowering of the conveyor (1).

5. The board warpage detection device according to claim 1, characterized in that, The conveyor (1) includes a second drive (11), a conveyor belt (12), a drive wheel and a driven wheel (13). The output end of the second drive (11) is connected to the drive wheel. The drive wheel and the driven wheel (13) are connected by transmission through the conveyor belt (12). The conveyor belt (12) is used to place the plate (2).

6. The board warpage detection device according to claim 1, characterized in that, The plate warping detection device also includes a telescopic rod (31), a mounting plate (32), and a support member (33). The output end of the first driving member (3) is connected to the mounting plate (32), and the top end of the telescopic rod (31) is connected to the mounting plate (32). The first driving member (3) and the telescopic rod (31) move in sync. The mounting plate (32) is provided with the support member (33), and the support member (33) is connected to the conveyor (1). When the first driving member (3) and the telescopic rod (31) move up and down synchronously, the mounting plate (32), the support member (33), and the conveyor (1) move up and down synchronously.

7. The board warpage detection device according to claim 1, characterized in that, The first detection device (5) includes a plurality of line-scan lasers (51) movably disposed above the conveyor (1).

8. A board warpage detection device according to claim 1 or 7, characterized in that, The first detection device (5) is movably mounted on the conveyor (1) via the moving device (7); The moving device (7) includes a gantry (71), a drive assembly, a guide rail (72), and a slider. The drive assembly is connected to the gantry (71) in a transmission manner. The slider is provided on the gantry (71) and is movably disposed on the guide rail (72) so that the drive assembly drives the gantry (71) to move along the guide rail (72).

9. The board warpage detection device according to claim 2, characterized in that, The second detection device (6) includes a plurality of spectral lasers (61) disposed at the feed end of the conveyor (1).

10. The board warpage detection device according to claim 1, characterized in that, It also includes an alarm that is used to sound an alarm when the warpage of the plate (2) is greater than a preset threshold.

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