Board thickness measuring device for PCBA (Printed Circuit Board Assembly)

Abstract

The utility model relates to the technical field of steering systems, in particular to a board thickness measuring device for a PCBA (Printed Circuit Board Assembly). A board thickness measuring device for a PCBA comprises an index plate, a measuring support, a measuring lifting cylinder and a measuring sensor, and is characterized in that a plurality of PCBA measuring tools are arranged on the index plate, the measuring support is arranged on one side of the index plate, the upper portion of the measuring support is connected with a back plate through a plurality of fixing bolts, the back plate is connected with the measuring lifting cylinder, and the measuring lifting cylinder is connected with the measuring sensor. The driving end of the measuring lifting cylinder is connected with a measuring sensor through a sensor connecting piece. Compared with the prior art, the PCBA board thickness measuring device provided by the utility model can realize board thickness measurement of different types of materials through mechanical equipment by utilizing the cooperation of the index plate and the PCBA measuring tool.

Description

Technical Field

[0001] This utility model relates to the field of steering system technology, specifically to a device for measuring the thickness of PCBA boards. Background Technology

[0002] In the industrial production sector, with the continuous upgrading of products, manufacturers need to produce more and more product models. If new production lines are added according to different models, the capital and personnel investment will be relatively large. It is inevitable that more and more different models of products will be produced on the same production line, and the position compatibility between different models has become an urgent problem to be solved.

[0003] For example: In the production workshop, each product model corresponds to different materials, and the thickness measurement requirements for different materials are different. How can we ensure that the PCBA boards used meet the assembly requirements? Summary of the Invention

[0004] To overcome the shortcomings of the prior art, this utility model provides a device for measuring the thickness of PCBA boards, which can realize the measurement of the thickness of different types of materials.

[0005] To achieve the above objectives, a device for measuring the thickness of PCBA boards is designed, comprising an indexing plate, a measuring support, a measuring lifting cylinder, and a measuring sensor. The device is characterized by having several PCBA measuring fixtures on the indexing plate, a measuring support located on one side of the indexing plate, a back plate connected to the upper part of the measuring support by several fixing bolts, a measuring lifting cylinder connected to the back plate, and a measuring sensor connected to the driving end of the measuring lifting cylinder via a sensor connector.

[0006] The bottom of the indexing plate is connected to a drive motor.

[0007] An auxiliary detection table parallelism mechanism is provided on one side of the bottom of the indexing plate, and there is a gap between the top of the auxiliary detection table parallelism mechanism and the bottom of the indexing plate.

[0008] The indexing plate is evenly equipped with 8 PCBA measuring fixtures. The PCBA measuring fixtures are U-shaped plate structures and are connected to the indexing plate by several bolts. Several PCBA positioning seats are connected to the PCBA measuring fixtures.

[0009] The PCBA positioning base is provided with at least 3 units, and the PCBA positioning base is a structure composed of one or more modules of L-shape, T-shape, U-shape, and trapezoidal shape.

[0010] The measuring support has an L-shaped structure. The bottom of the measuring support is connected to the equipment by several locking nut assemblies, and the right angle of the measuring support is connected by a support plate.

[0011] The measuring lifting cylinder has several in-situ sensors connected to its side, a throttle valve connected to its upper end, and an air inlet pipe connected to its lower end.

[0012] The measuring needle of the measuring sensor passes through the bottom of the sensor connector and is located below the sensor connector; a tail stop is provided on one side of the measuring sensor, and the top of the tail stop is connected to the bottom of the sensor connector.

[0013] Compared with the prior art, this utility model provides a device for measuring the thickness of PCBA boards. By using the cooperation of an indexing plate and PCBA measuring fixtures, the thickness of different types of materials can be measured through mechanical equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a side view of the structure of this utility model.

[0016] Figure 3 A diagram showing the distribution of PCBA measuring fixtures on the indexing plate.

[0017] Figure 4 , Figure 5 Schematic diagram of the measurement fixtures for different PCBA models. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figures 1 to 5 As shown, the indexing plate 11 is provided with several PCBA measuring fixtures 13, and a measuring support 1 is provided on one side of the indexing plate 11. The upper part of the measuring support 1 is connected to the back plate 8 by several fixing bolts 7. The measuring lifting cylinder 5 is connected to the back plate 8, and the driving end of the measuring lifting cylinder 5 is connected to the measuring sensor 15 through the sensor connector 6.

[0020] The bottom of the indexing plate 11 is connected to the drive motor.

[0021] The indexing plate can be controlled to rotate at a constant speed by driving the motor. When it rotates to the measurement position, the driving motor stops.

[0022] An auxiliary detection table parallelism mechanism 12 is provided on one side of the bottom of the indexing plate 11, and there is a gap between the top of the auxiliary detection table parallelism mechanism 12 and the bottom of the indexing plate 11.

[0023] The auxiliary detection platform parallelism mechanism 12 can detect in real time whether the indexing plate 11 is in a horizontal position, ensuring the accuracy of subsequent detection.

[0024] Eight PCBA measuring fixtures 13 are evenly distributed on the indexing plate 11. The PCBA measuring fixtures 13 have a U-shaped plate structure and are connected to the indexing plate 11 by several bolts. Several PCBA positioning seats 13-1 are connected to the PCBA measuring fixtures 13.

[0025] The eight PCBA measurement fixtures 13 on the indexing plate 11 can be equipped with different models of PCBA measurement fixtures as needed, which improves measurement efficiency.

[0026] At least three PCBA positioning seats 13-1 are provided. The PCBA positioning seats 13-1 are structures composed of one or more modules, such as L-shaped, T-shaped, U-shaped, and trapezoidal.

[0027] The PCBA positioning bracket 13-1 is replaced according to the PCBA model, which eliminates the need to manufacture a large number of PCBA measurement fixtures for different PCBA models, reduces measurement costs, and increases the utilization rate of PCBA measurement fixtures.

[0028] The measuring support 1 has an L-shaped structure. The bottom of the measuring support 1 is connected to the equipment by several locking nut assemblies 10. The right angle of the measuring support 1 is connected by a support plate 9.

[0029] Several in-situ sensors 2 are connected to the side of the measuring lifting cylinder 5, a throttle valve 3 is connected to the upper end of the measuring lifting cylinder 5, and an air inlet pipe 4 is connected to the lower end of the measuring lifting cylinder 5.

[0030] The measuring needle of the measuring sensor 15 passes through the bottom of the sensor connector 6 and is located below the sensor connector 6; a tail stop 14 is provided on one side of the measuring sensor 15, and the top of the tail stop 14 is connected to the bottom of the sensor connector 6.

[0031] The tail stop 14 has two functions: 1. It serves as a measurement reference. When the bottom of the tail stop 14 contacts the indexing plate 11, it serves as the zero point of the measurement; 2. It can protect the measuring needle of the measuring sensor 15 and prevent the measuring lifting cylinder 5 from descending excessively, thereby damaging the measuring needle of the measuring sensor 15.

[0032] The working principle of this utility model is as follows: After the robot picks up the PCBA to be measured from the material box, it is placed on the PCBA measuring fixture 13 on the indexing plate 11. The indexing plate 11 is driven by the motor to rotate to the measurement position. The measuring lifting cylinder 5 descends to the measurement position, and the tail stop 14 presses down to the thickness measurement center reference point. At the same time, the measuring sensor 15 follows the measuring lifting cylinder 5 to descend to the measurement point. The measuring needle of the measuring sensor 15 begins to collect data. The collected data is filtered by the PLC to select the maximum value within the cycle. Then, the PLC logic operation is used to subtract the standard value to obtain the actual measured board thickness value. The board thickness result is compared with the MES process parameter setting to determine whether the parameter setting requirements are met. After the measurement is completed, the measuring lifting cylinder 5 rises to the original position, and the indexing plate 11 rotates to the unloading position and is picked up by the robot for unloading.

Claims

1. A device for measuring the thickness of PCBA boards, comprising an indexing plate, a measuring support, a measuring lifting cylinder, and a measuring sensor, characterized in that: The indexing plate (11) is provided with several PCBA measuring fixtures (13). A measuring support (1) is provided on one side of the indexing plate (11). The upper part of the measuring support (1) is connected to the back plate (8) by several fixing bolts (7). A measuring lifting cylinder (5) is connected to the back plate (8). The driving end of the measuring lifting cylinder (5) is connected to the measuring sensor (15) through the sensor connector (6).

2. The device for measuring PCBA board thickness according to claim 1, characterized in that: The bottom of the indexing plate (11) is connected to a drive motor.

3. The device for measuring PCBA board thickness according to claim 1, characterized in that: An auxiliary detection table parallelism mechanism (12) is provided on one side of the bottom of the indexing plate (11), and there is a gap between the top of the auxiliary detection table parallelism mechanism (12) and the bottom of the indexing plate (11).

4. A device for measuring PCBA board thickness according to claim 1, 2, or 3, characterized in that: The indexing plate (11) is provided with eight PCBA measuring fixtures (13). The PCBA measuring fixtures (13) are U-shaped plate structures. The PCBA measuring fixtures (13) are connected to the indexing plate (11) by several bolts. Several PCBA positioning seats (13-1) are connected to the PCBA measuring fixtures (13).

5. The device for measuring PCBA board thickness according to claim 4, characterized in that: The PCBA positioning base (13-1) is provided in at least 3 units, and the PCBA positioning base (13-1) is a structure composed of one or more modules of L-shape, T-shape, U-shape, and trapezoid.

6. The device for measuring PCBA board thickness according to claim 1, characterized in that: The measuring support (1) is an L-shaped structure. The bottom of the measuring support (1) is connected to the equipment by several locking nut assemblies (10). The right angle of the measuring support (1) is connected by a support plate (9).

7. The device for measuring PCBA board thickness according to claim 1, characterized in that: The measuring lifting cylinder (5) is connected to several in-situ sensors (2) on its side, the upper end of the measuring lifting cylinder (5) is connected to a throttle valve (3), and the lower end of the measuring lifting cylinder (5) is connected to an air inlet pipe (4).

8. The device for measuring PCBA board thickness according to claim 1, characterized in that: The measuring needle of the measuring sensor (15) passes through the bottom of the sensor connector (6) and is located below the sensor connector (6); a tail stop (14) is provided on one side of the measuring sensor (15), and the top of the tail stop (14) is connected to the bottom of the sensor connector (6).

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