Circuit board detection tool

Abstract

The utility model belongs to the technical field of circuit board production, and particularly relates to a circuit board detection tool which comprises a workbench provided with an electric cylinder, the electric cylinder is vertically arranged, and the output end of the electric cylinder is connected with the bottom of a supporting seat. The supporting base is connected with the frame through a connecting rod, clamping devices used for clamping the end of a circuit board are arranged at the two ends of the frame in the length direction in a sliding mode, each clamping device comprises a fixing frame and a pressing plate vertically arranged in the fixing frame in a sliding mode, and a light source frame is further arranged on a frame body in the length direction of the frame in a sliding mode. The light source frame is provided with two linear light sources arranged up and down, and the workbench is further provided with a baffle located on the light path of the linear light sources and located on one side of the electric cylinder. The circuit board deformation detection device is simple in structure, maximum deformation points of upper bending and lower bending allowed by the circuit board are marked through the upper light source and the lower light source respectively, if light of a certain light source is blocked, it is indicated that deformation of the circuit board is excessive, and then most circuit boards with deformation exceeding the standard can be rapidly removed.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board production, and in particular relates to a circuit board detection tool. Background Art

[0002] The board body of the circuit board will be deformed after the pressing operation is completed, and the overall performance is that the board body is bent to a certain extent. If the deformation is too large, it will affect the positioning of the later plug-in and easily cause the automatic plug-in machine to crash. The bending degree measurement in the prior art is mostly to place the circuit board on a flat board, and then use a gauge to measure the height of different parts of the circuit board and calculate the numerical difference between it and the flat board surface to determine whether the deformation meets the standard. The overall operation is relatively cumbersome. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model provides a circuit board inspection tool. The utility model has a simple structure and uses light sources arranged at the top and bottom to respectively mark the maximum deformation points of the upper and lower bending allowed by the circuit board. If the light of a certain light source is blocked, it means that the circuit board is excessively deformed, and most circuit boards with excessive deformation can be quickly eliminated.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A circuit board inspection tool, comprising a workbench provided with an electric cylinder, the electric cylinder being vertically arranged and the output end being connected to the bottom of a support seat, the support seat being connected to a frame through a connecting rod and the frame being slidably provided with a clamp for clamping the end of the circuit board at both ends in its length direction, the clamp comprising a fixing frame and a pressing plate vertically slidably arranged inside the fixing frame;

[0006] A light source frame is also slidably provided on the frame body in the length direction of the frame, and two linear light sources arranged up and down are provided on the light source frame. A baffle located on the light path of the linear light source is also provided on one side of the electric cylinder of the workbench.

[0007] Preferably, bearing seats are provided at the bottom of both ends of the frame in the longitudinal direction, the middle section of the bidirectional screw rod arranged parallel to the frame is rotatably arranged on the support seat, the two ends are respectively assembled with the bearings in the corresponding bearing seats and one end is connected to the motor transmission;

[0008] The fixing frame is in a C-shaped frame structure and a sliding block is provided at the bottom end. The sliding block is screwed to the threaded section at the corresponding end of the bidirectional screw rod through a preset screw hole.

[0009] Preferably, both ends of the slider are also slidably matched with preset slideways on the frame.

[0010] Preferably, a plurality of telescopic sleeves are provided between the top surface of the pressure plate and the inner top wall of the fixing frame, and a limit spring is sleeved on the outside of the telescopic sleeves.

[0011] Preferably, the bottom surface of the end of the pressing plate facing the opening of the fixing frame is of a wedge-shaped structure.

[0012] The working principle of the present utility model is as follows:

[0013] First, select the corresponding light source frame according to the size specifications of the sampled circuit board, and ensure that the linear lights emitted by the two linear light sources on the light source frame are respectively located at the maximum upward bending amount and the maximum downward bending amount allowed by the corresponding size circuit board. Since the position of the inner bottom wall of the fixing frame is fixed, the specifications of the light source frame and the corresponding linear light sources can be determined according to the thickness specifications of the circuit board. At the same time, the midpoint of the distance between the two linear light sources should be the midpoint of the thickness of the corresponding size circuit board.

[0014] Secondly, start the motor, so that the motor drives the bidirectional lead screw to rotate, and then the two sliders move in the slideway, and the two fixing frames move towards or away from each other, so that the two fixing frames can match the length of the circuit board.

[0015] Then insert the end parts of the circuit board into the space between the pressing plate and the inner bottom wall of the fixing frame respectively from the notches of the two fixing frames. Due to the wedge-shaped structure of the end of the pressing plate, the end of the circuit board can be quickly inserted into the corresponding position. At the same time, the limiting spring presses down the pressing plate to limit and clamp the circuit board.

[0016] Then move the light source frame along the frame, so that the linear lights emitted by the two linear light sources hit the baffle. If no light spot can be observed on the baffle when moving to a certain position, it proves that the circuit board blocks the light, that is, it means that the bending degree of the circuit board in a certain direction exceeds the required maximum deformation amount.

[0017] Compared with the prior art, the present utility model has the following advantages: The structure of the present utility model is simple. The upper and lower light sources are used to respectively mark the maximum deformation points of the upper and lower bends allowed by the circuit board. If the light of a certain light source is blocked, it can represent that the deformation of the circuit board is excessive, and then most of the circuit boards with excessive deformation can be quickly removed. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the circuit board detection tooling described in the specific implementation manner;

[0019] Figure 2 It is Figure 1 The enlarged structural diagram of part A in Specific Embodiments

[0020] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] As shown Figure 1-2 in the figure, a circuit board detection tooling includes a workbench 1 provided with an electric cylinder 2. The electric cylinder 2 is vertically arranged, and its output end is rotationally connected to the bottom of a support seat 4 through a damping rotating shaft 21. The support seat 4 is connected to a frame 5 through a connecting rod 41, and the frame 5 is slidably provided with clamps for clamping the ends of the circuit board at both ends in its own length direction;

[0022] Bearing seats 51 are provided at the bottoms of both ends in the length direction of the frame 5. The middle section of a bidirectional lead screw 52 arranged parallel to the frame 5 is rotationally arranged on the support seat 4, and both ends are respectively assembled with bearings in the corresponding bearing seats 51, and one end is in transmission connection with a motor 53;

[0023] The clamp includes a fixed frame 61 in a C-shaped frame structure and a pressing plate 62 vertically slidably arranged inside the fixed frame. A plurality of telescopic sleeves are arranged between the top surface of the pressing plate 62 and the inner top wall of the fixed frame 61. A limiting spring 64 is sleeved outside the telescopic sleeve, and the bottom surface of one end of the pressing plate 62 facing the opening of the fixed frame 61 is in a wedge-shaped structure.

[0024] A slider 63 is provided at the bottom end of the fixed frame 61. The slider 63 is screwed with the threaded section at the corresponding end of the bidirectional lead screw 52 through a preset screw hole, and both ends of the slider 63 are also slidably matched with a preset slideway 54 on the frame 5.

[0025] A light source frame is also slidably arranged on the frame body in the length direction of the frame 5. Two linear light sources 7 arranged in an up-and-down manner are provided on the light source frame. A baffle 3 for being located on the optical path of the linear light source is also provided on the workbench 1 on one side of the electric cylinder 2.

[0026] The working principle of the present utility model is as follows:

[0027] First, select a corresponding light source frame according to the size specifications of the sampled circuit board to ensure that the linear lights emitted by the two linear light sources 7 on the light source frame are respectively located at the maximum upward bending amount and the maximum downward bending amount allowed by the circuit board of the corresponding size. Since the position of the inner bottom wall of the fixed frame 61 is fixed, the specifications of the light source frame and the corresponding linear light sources 7 can be determined according to the thickness specifications of the circuit board. At the same time, the midpoint of the distance between the two linear light sources 7 should be at the midpoint of the thickness of the circuit board of the corresponding size.

[0028] Secondly, start the motor 53 to drive the bidirectional lead screw 52 to rotate, so that the two sliders 63 move in the slideway 54, and the two fixed frames 61 move towards or away from each other, so that the two fixed frames 61 can match the length of the circuit board.

[0029] Then, the end parts of the circuit board are respectively inserted into the space between the pressing plate 62 and the inner bottom wall of the fixing frame 61 from the notches of the two fixing frames 61. Due to the wedge-shaped structure at the end of the pressing plate 62, the end parts of the circuit board can be quickly inserted into the corresponding positions. At the same time, the limiting spring 64 presses down the pressing plate 62 to limit and clamp the circuit board.

[0030] Then, move the light source holder along the frame 5 so that the linear light emitted by the two linear light sources 7 hits the baffle 3. If the light spot cannot be observed on the baffle 3 when moving to a certain position, it proves that the circuit board blocks the light, which means that the bending degree of the circuit board in a certain direction exceeds the maximum deformation amount required.

Claims

1. A circuit board detection tool, characterized in that: It comprises a workbench (1) provided with an electric cylinder (2), wherein the electric cylinder (2) is arranged vertically and the output end is rotatably connected to the bottom of a support seat (4) via a damping shaft (21), the support seat (4) is connected to a frame (5) via a connecting rod (41), and the frame (5) is provided with a clamp for clamping the end of a circuit board in a sliding manner at both ends of its length direction, the clamp comprising a fixing frame (61) and a pressing plate (62) vertically slidably arranged inside the fixing frame; A light source rack is also slidably provided on the frame body in the longitudinal direction of the frame (5), and two linear light sources (7) are arranged in an upper and lower arrangement on the light source rack. The workbench (1) is also provided with a baffle (3) located on the light path of the linear light source on one side of the electric cylinder (2).

2. The circuit board testing tool as claimed in claim 1, characterized in that: The bottom of both ends of the frame (5) in the longitudinal direction are provided with bearing seats (51); the middle section of a bidirectional screw rod (52) arranged parallel to the frame (5) is rotatably arranged on the support seat (4), and both ends are respectively assembled with bearings in corresponding bearing seats (51), and one end thereof is connected to the motor (53); The fixing frame (61) is in a C-shaped frame structure and is provided with a sliding block (63) at the bottom end. The sliding block (63) is threadedly engaged with a threaded section at a corresponding end of the bidirectional screw rod (52) through a preset screw hole.

3. The circuit board testing tool as claimed in claim 2, characterized in that: Both ends of the slider (63) are also slidably matched with the slideways (54) preset on the frame (5).

4. The circuit board testing tool as claimed in claim 1, characterized in that: A plurality of telescopic sleeves are provided between the top surface of the pressure plate (62) and the inner top wall of the fixing frame (61), and a limit spring (64) is sleeved on the outside of the telescopic sleeves.

5. The circuit board testing tool as claimed in claim 4, characterized in that: The bottom surface of one end of the pressing plate (62) that is open toward the fixing frame (61) is in a wedge-shaped structure.

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