A chip pin coplanarity detection device

Abstract

This invention provides a chip pin coplanarity detection device, relating to the field of chip testing technology. The invention includes a fixed base, with a mounting seat fixedly connected to the top surface of the fixed base. An optical glass plate is disposed above the mounting seat. Two trimming mechanisms with trimming effects are disposed above the fixed base. Each trimming mechanism includes a fixed sleeve, with a lifting slider slidably connected inside the fixed sleeve. An electric push rod is fixedly connected to the outer surface of the lifting slider. This invention, through the arrangement of the lifting slider, the electric hydraulic push rod, and the trimming plate, allows the electric hydraulic push rod to move the lifting slider up and down, and the electric push rod to adjust the distance between the trimming plate and the chip pins. This enables the trimming plate to automatically trim the coplanarity of the chip pins, avoiding the labor intensity of manual trimming of pin coplanarity, reducing the probability of chip damage during manual trimming, and improving trimming efficiency.

Description

Technical Field

[0001] This utility model relates to a pin coplanarity detection device, specifically a chip pin coplanarity detection device, belonging to the field of chip testing technology. Background Technology

[0002] Chip pin coplanarity refers to the vertical height deviation of the pins of surface mount components, that is, the vertical distance between the horizontal plane formed by the highest pin and the horizontal plane formed by the lowest pin. Poor pin coplanarity can lead to problems such as cold solder joints, missing solder joints, and loose connections in the chip. Therefore, it is necessary to test the coplanarity of the chip after it is manufactured.

[0003] According to patent CN211401078U, a chip pin coplanarity detection device is disclosed, including a frame, a worktable, a detection mechanism, a material tray, a material tray positioning mechanism, and a chip handling mechanism. The material tray is used to place chips and is placed on the worktable. The material tray positioning mechanism is located around the material tray and is used to position the sides of the material tray.

[0004] The above solution can avoid detection deviations caused by tray skew during implementation and realize automated chip transfer to the tray. However, during implementation, it is difficult to correct pins with poor coplanarity. When the device detects poor coplanarity of chip pins, the chip needs to be removed and the pins manually corrected. This is not only inefficient but also prone to damaging the chip pins. To address this issue, we provide a chip pin coplanarity detection device. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a chip pin coplanarity detection device to solve the above-mentioned problems, thereby addressing the issue in the prior art that requires manual adjustment of chip pins with poor coplanarity.

[0007] (II) Technical Solution

[0008] This utility model is achieved through the following technical solution: a chip pin coplanarity detection device, including a fixed base, a mounting seat fixedly connected to the top surface of the fixed base, an optical glass plate disposed above the mounting seat, and two trimming mechanisms with trimming effect disposed above the fixed base. Each trimming mechanism includes a fixed sleeve, a lifting slider slidably connected inside the fixed sleeve, an electric push rod fixedly connected to the outer surface of the lifting slider, a connecting block fixedly connected to the telescopic end of the electric push rod, and a trimming plate fixedly connected to the bottom surface of the connecting block.

[0009] Preferably, an electro-hydraulic push rod is fixedly connected to the inner bottom wall of the fixed sleeve, and the top end of the electro-hydraulic push rod is fixedly connected to the lifting slider. The electro-hydraulic push rod provides the power for pressing and trimming the trimming plate.

[0010] Preferably, the top surface of the mounting base is provided with a snap-fit ​​groove, and the bottom surface of the optical glass plate is fixedly connected with a snap-fit ​​block. The snap-fit ​​groove and the snap-fit ​​block are compatible, and the optical glass plate can be replaced according to the actual size of the chip being tested.

[0011] Preferably, a support plate is fixedly connected to the top surface of the fixed base, a mounting bracket is fixedly connected to the outer surface of the support plate, and a D camera is fixedly mounted on the outer surface of the mounting bracket. The D camera is capable of scanning the chip pins.

[0012] Preferably, the top surface of the fixed base is fixedly connected to two fixed columns, and an electric slide rail is fixedly installed between the two fixed columns. A robotic arm is installed on the outside of the electric slide rail, and the robotic arm has the effect of automatically grasping the chip.

[0013] Preferably, a placement platform is fixedly connected to the top surface of the fixed base, a storage box is slidably connected to the top surface of the fixed base, and a sliding rod is fixedly connected to the bottom surface of the storage box, which can hold the tested chip.

[0014] Preferably, the top surface of the fixed base is provided with a sliding groove, the sliding rod is slidably connected to the sliding groove, and a PC is provided outside the fixed base. The PC can determine whether the coplanarity of the chip pins is qualified based on the data uploaded by the D camera.

[0015] This invention provides a chip pin coplanarity detection device, which has the following advantages:

[0016] 1. This utility model, through the setting of a lifting slider, an electric hydraulic push rod, an electric push rod and a trimming plate, allows the electric hydraulic push rod to drive the lifting slider to rise and fall, and the electric push rod to adjust the distance between the trimming plate and the chip pins. This enables the trimming plate to automatically trim the coplanarity of the chip pins, avoiding the labor intensity of manual trimming of pin coplanarity, reducing the probability of damaging the chip by manual trimming, and improving trimming efficiency.

[0017] 2. This utility model, through the setting of electric slide rail and robotic arm, can realize the automatic gripping of the chip by the device, avoiding damage to the chip caused by manual movement. Through the setting of electric hydraulic push rod, it can drive the trimming plate to press the chip pins together, thereby keeping the pins on the same horizontal plane, improving the coplanarity of the pins, and avoiding the chip from having poor soldering or missing soldering due to different pin heights. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the trimming mechanism of this utility model;

[0020] Figure 3 This is a partial structural schematic diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the storage box of this utility model.

[0022] [Explanation of Key Component Symbols]

[0023] 1. Fixed base; 2. Mounting base; 3. Optical glass plate; 4. Snap-fit ​​slot; 5. Snap-fit ​​block;

[0024] 6. Trimming mechanism; 601. Fixed sleeve; 602. Lifting slider; 603. Electric push rod; 604. Connecting block; 605. Trimming plate; 606. Electro-hydraulic push rod;

[0025] 7. Support plate; 8. Mounting bracket; 9. 3D camera; 10. Fixed column; 11. Electric slide rail; 12. Robotic arm; 13. Placement platform; 14. Storage box; 15. Slide rod; 16. Slide groove; 17. PC. Detailed Implementation

[0026] This utility model provides a chip pin coplanarity detection device.

[0027] Please see Figure 1 The device includes a fixed base 1, with a placement platform 13 fixedly connected to the top surface of the fixed base 1. Multiple fixing plates are installed on the outer surface of the fixed base 1. The operator can fix the fixed base 1 in a suitable working position with bolts to prevent the fixed base 1 from shaking when the device is testing the chip pins, thus affecting the testing accuracy of the device. The placement platform 13 can hold the chip to be tested.

[0028] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The electric slide rail 11, robotic arm 12, electric push rod 603, electric hydraulic push rod 606, 3D camera 9, optical glass plate 3 and PC 17 involved in this application are all prior art, and this application will not elaborate on their working principles and structures.

[0029] Please refer to it again. Figure 1Two fixed columns 10 are fixedly connected to the top surface of the fixed base 1. An electric slide rail 11 is fixedly installed between the two fixed columns 10. A robot arm 12 is installed on the outside of the electric slide rail 11. Through the setting of the electric slide rail 11 and the robot arm 12, the robot arm 12 can move above the fixed base 1 according to the program. When moving, the robot arm 12 can grab the chip in the placement stage 13 and place it on the optical glass plate 3, so that the 3D camera 9 can scan the chip pins. After the scanning is completed, the robot arm 12 can grab the chip and place it in the storage box 14.

[0030] Please see Figure 1 and Figure 3 The top surface of the fixed base 1 is fixedly connected to the mounting base 2, and an optical glass plate 3 is set above the mounting base 2. The optical glass plate 3 facilitates the 3D camera 9 to scan and photograph the chip pins, improves the scanning effect of the 3D camera 9, and enhances the accuracy of the device in detecting the coplanarity of the pins. The height of the optical glass plate 3 is consistent with the height of the 3D camera 9, ensuring that the 3D camera 9 can perform better data scanning on the chip placed on the optical glass plate 3, thereby improving the detection accuracy of the device.

[0031] The top surface of the mounting base 2 is provided with a snap-fit ​​groove 4, and the bottom surface of the optical glass plate 3 is fixedly connected with a snap-fit ​​block 5. The snap-fit ​​groove 4 and the snap-fit ​​block 5 are compatible. With the snap-fit ​​groove 4 and the snap-fit ​​block 5, it is convenient for the staff to replace the optical glass plate 3 according to the actual size of the chip being tested, so that the device can test the pins of various types of chips and improve the applicability of the device.

[0032] A support plate 7 is fixedly connected to the top surface of the fixed base 1. A mounting bracket 8 is fixedly connected to the outer surface of the support plate 7. A 3D camera 9 is fixedly mounted on the outer surface of the mounting bracket 8. The 3D camera 9 can perform multiple data scans on the sample being tested and upload the collected data information to the PC 17.

[0033] Please refer to it again. Figure 1 A PC 17 is installed on the outside of the fixed base 1. The PC 17 is electrically connected to each component of the device through wires, thereby controlling the operation of each component. The PC 17 can receive data information collected by the 3D camera 9 and stitch the collected results to determine whether the coplanarity of the chip pins is qualified. If the result shows that the pin coplanarity is poor, the PC 17 will send a signal to the trimming mechanism 6 to trim the chip pins.

[0034] Please see Figure 1 and Figure 4A storage box 14 is slidably connected to the top surface of the fixed base 1, and a sliding rod 15 is fixedly connected to the bottom surface of the storage box 14. A sliding groove 16 is provided on the top surface of the fixed base 1, and the sliding rod 15 is slidably connected to the sliding groove 16. The storage box 14 can store the chips that have been tested. The outer surface of the storage box 14 is provided with a handle, which makes it easy for the staff to pull the storage box 14 out of the fixed base 1 and take out the chips in the storage box 14. The sliding rod 15 and the sliding groove 16 have a certain magnetic attraction effect, which can keep the storage box 14 stable with the fixed base 1 when there is no external force, and prevent the storage box 14 from deviating during the use of the device and affecting the chip placement of the robot arm 12.

[0035] Please see Figure 1 and Figure 2 Two trimming mechanisms 6 with trimming effect are provided above the fixed base 1. The trimming mechanism 6 includes a fixed sleeve 601. A lifting slider 602 is slidably connected inside the fixed sleeve 601. When the lifting slider 602 moves up and down inside the fixed sleeve 601, it can drive the trimming plate 605 to press the chip pins together, so that the pins are kept on the same horizontal plane, thereby improving the coplanarity of the pins and avoiding the chip from having poor soldering or missing soldering due to different pin heights.

[0036] An electro-hydraulic push rod 606 is fixedly connected to the inner bottom wall of the fixed sleeve 601. The top end of the electro-hydraulic push rod 606 is fixedly connected to the lifting slider 602. The electro-hydraulic push rod 606 can drive the lifting slider 602 to slide and rise inside the fixed sleeve 601, thereby providing power for the subsequent trimming operation of the trimming plate 605. When the electro-hydraulic push rod 606 is running, it first pushes the lifting slider 602 to a certain height, so that the height of the trimming plate 605 is higher than the height of the chip pin. Then, after the electric push rod 603 pushes the trimming plate 605 to a certain position, the electro-hydraulic push rod 606 drives the lifting slider 602 to descend, thereby enabling the trimming plate 605 to perform pressing and trimming operations on the chip pin.

[0037] An electric push rod 603 is fixedly connected to the outer surface of the lifting slider 602. A connecting block 604 is fixedly connected to the telescopic end of the electric push rod 603. The electric push rod 603 can drive the connecting block 604 to move above the optical glass plate 3. When the connecting block 604 moves above the optical glass plate 3, the lifting slider 602 descends, which can drive the connecting block 604 to descend, thereby allowing the trimming plate 605 to trim the chip pins and improve the coplanarity of the chip pins.

[0038] A trimming plate 605 is fixedly connected to the bottom surface of the connecting block 604. The trimming plate 605 is made of rubber and has a certain elasticity. It can trim the chip pins without damaging them. When the connecting block 604 descends, it can drive the trimming plate 605 to press the chip pins together, thereby improving the coplanarity of the chip pins.

[0039] Working principle: When the operator uses this device to perform coplanarity testing on chip pins, the operating program of each device is first set by the PC 17, and then the device is started. After the device is started, the robotic arm 12 will pick up the chip from the placement table 13 and place it on the optical glass plate 3. The 3D camera 9 will scan the chip pins and upload the data to the PC 17. After analyzing the data, the PC 17 can determine whether the coplanarity of the chip pins is qualified. If it is not qualified, the PC 17 will send a trimming signal to the trimming mechanism 6. After receiving the signal, the trimming mechanism 6 will start the electric hydraulic push rod 606 and the electric push rod 603. The electric hydraulic push rod 606 pushes the lifting slider 602 to rise to a suitable height for trimming by the trimming plate 605. The electric push rod 603 then pushes the trimming plate 605 to move to a suitable trimming position. Then the electric hydraulic push rod 606 descends and drives the trimming plate 605 to press and trim the chip pins on the optical glass plate 3, realizing the automated trimming of the pins, improving the trimming efficiency of the pins, and avoiding damage to the chip caused by manual trimming by the operator.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the coplanarity of chip pins, comprising a fixed base (1), characterized in that: The top surface of the fixed base (1) is fixedly connected to the mounting base (2), and an optical glass plate (3) is provided above the mounting base (2). Two trimming mechanisms (6) with trimming effect are provided above the fixed base (1). The trimming mechanism (6) includes a fixed sleeve (601). A lifting slider (602) is slidably connected inside the fixed sleeve (601). An electric push rod (603) is fixedly connected to the outer surface of the lifting slider (602). A connecting block (604) is fixedly connected to the telescopic end of the electric push rod (603). A trimming plate (605) is fixedly connected to the bottom surface of the connecting block (604).

2. The chip pin coplanarity detection device of claim 1, wherein: An electric hydraulic push rod (606) is fixedly connected to the inner bottom wall of the fixed sleeve (601), and the top end of the electric hydraulic push rod (606) is fixedly connected to the lifting slider (602).

3. The chip pin coplanarity detection device of claim 1, wherein: The top surface of the mounting base (2) is provided with a snap-fit ​​groove (4), and the bottom surface of the optical glass plate (3) is fixedly connected with a snap-fit ​​block (5). The snap-fit ​​groove (4) and the snap-fit ​​block (5) are compatible.

4. The chip pin coplanarity detection device of claim 1, wherein: The top surface of the fixed base (1) is fixedly connected to a support plate (7), the outer surface of the support plate (7) is fixedly connected to a mounting bracket (8), and the outer surface of the mounting bracket (8) is fixedly mounted with a 3D camera (9).

5. The chip pin coplanarity detection device of claim 1, wherein: The top surface of the fixed base (1) is fixedly connected to two fixed columns (10), and an electric slide rail (11) is fixedly installed between the two fixed columns (10). A robot arm (12) is installed on the outside of the electric slide rail (11).

6. The chip pin coplanarity detection device of claim 1, wherein: The top surface of the fixed base (1) is fixedly connected to a placement platform (13), the top surface of the fixed base (1) is slidably connected to a storage box (14), and the bottom surface of the storage box (14) is fixedly connected to a sliding rod (15).

7. The chip pin coplanarity detection apparatus of claim 6, wherein: The top surface of the fixed base (1) is provided with a sliding groove (16), the sliding rod (15) is slidably connected to the sliding groove (16), and a PC (17) is provided on the outside of the fixed base (1).

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