Potentiometer smoothness testing device

Abstract

The invention provides a potentiometer smoothness testing device which comprises a component mounting table (1) and is characterized in that a rotating motor (2) is mounted on the component mounting table (1), a clamping jaw (3) correspondingly matched with a potentiometer is mounted on an output shaft of the rotating motor (2), and a movable frame body (4) is arranged on the component mounting table (1). A potentiometer clamp assembly (5) correspondingly matched with a potentiometer is arranged on the movable frame body (4), a control table top (6) is arranged on the component mounting table (1), and a resistance sampling module assembly which is in electric signal control fit with the component mounting table (1), the rotating motor (2) and the clamping jaw (3) is arranged in the component mounting table (1). The device is simple in structure and convenient to use, a mechanical device is used for replacing manual work for automatic rotation, the smoothness of the potentiometers is automatically tested and judged, the potentiometers can be accurately and rapidly screened and tested, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of potentiometer screening and testing, specifically: a device for testing the smoothness of potentiometers. Background Technology

[0002] Potentiometers, or adjustable resistors, play a crucial role in the smoothness of their resistance changes during use. In component screening and testing, smoothness testing relies on operators manually rotating the potentiometer while observing whether the resistance value in the LCR meter is zero or jumps to determine whether the potentiometer's smoothness is up to standard. Relying on manual adjustment is not only inefficient but also prone to misjudgment due to operator fatigue. Summary of the Invention

[0003] This invention aims to overcome the shortcomings of existing technologies and provide a device for testing the smoothness of potentiometers. This application provides the following technical solution: A potentiometer smoothness testing device includes a component mounting platform, characterized in that: a rotary motor is mounted on the component mounting platform, a chuck corresponding to the potentiometer is mounted on the output shaft of the rotary motor, a movable frame is provided on the component mounting platform, a potentiometer clamp assembly corresponding to the potentiometer is provided on the movable frame, a control surface is provided on the component mounting platform, and a resistance sampling module assembly is provided inside the component mounting platform to form an electrical signal control coordination with the component mounting platform, the rotary motor, the control surface, and the chuck.

[0004] Based on the above technical solutions, the following further technical solutions are also possible: The resistance sampling module assembly includes: a resistance sampling module that is electrically connected to the claws within the component mounting platform; the resistance sampling module is electrically connected to the PLC in the control panel via wires; a transformer and a relay that are electrically connected to the PLC within the component mounting platform; and the relay is electrically connected to the rotating motor.

[0005] The potentiometer clamp assembly includes: a lower clamp body installed on the movable frame; a longitudinal adjusting bolt passing through the movable frame; an upper clamp body corresponding to and cooperating with the lower clamp body fitted on the longitudinal adjusting bolt; the upper clamp body being connected and cooperating with the longitudinal adjusting bolt via a nut; and a set of guide posts provided on the lower clamp body, the upper end of which passes through the upper clamp body and extends upward for a certain distance.

[0006] The movable frame includes: a horizontal rotating bolt on the component mounting platform, a corresponding movable block fitted on the horizontal adjusting bolt, a bracket spanning the movable block, and a movable sliding groove on the component mounting platform that corresponds to the movable block.

[0007] The control panel includes a circuit start switch, a green indicator light, a red indicator light, and a resistance value display.

[0008] Advantages of the invention: This invention has a simple structure and is easy to use. It uses a mechanical device to automatically rotate the potentiometer instead of manually and automatically tests and judges the smoothness of the potentiometer. It can accurately and quickly screen and test potentiometers, thus improving work efficiency. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 yes Figure 1 Another perspective illustration; Figure 3 This is an electrical principle block diagram of the resistance sampling module component in this invention. Detailed Implementation

[0010] like Figure 1-3 As shown, a potentiometer smoothness testing device includes a component mounting platform 1, on which a horizontally distributed rotary motor 2 is mounted. A jaw 3 corresponding to the potentiometer is mounted on a mounting base 2a via the output shaft of the rotary motor 2. The jaw 3 includes two arc-shaped jaw bodies, one of which is fixed to the mounting base 2a, and the other jaw body is connected to the mounting base 2a via a threaded lifting structure. The movement of the jaw body is controlled by rotating a bolt in the threaded lifting structure, thereby clamping or releasing the jaw 3 onto the target object. Since the threaded lifting structure is a mature structure in the prior art, it will not be described in detail here.

[0011] A movable frame 4 is provided on the component mounting platform 1, and a potentiometer clamp assembly 5 corresponding to and cooperating with the potentiometer is provided on the movable frame 4.

[0012] The movable frame 4 includes horizontally rotating bolts 4a distributed along its length on a component mounting platform 1. A movable groove 4d is provided on the component mounting platform 1 below the horizontal adjusting bolts 4a. A movable block 4b is threaded onto the horizontal adjusting bolts 4a, and the lower end of the movable block 4b is inserted into the movable groove 4d a certain distance. A portal-shaped bracket 4c spans across the movable block 4b. Rotating the horizontal adjusting bolts 4a clockwise or counterclockwise moves the movable block 4b along the movable groove 4d.

[0013] The potentiometer clamp assembly 5 includes: a lower clamp 5a mounted on the movable frame 4; a longitudinal adjusting bolt 5b passing through a portal-shaped bracket 4c of the movable frame 4; an upper clamp 5c corresponding to and cooperating with the lower clamp 5a fitted on the longitudinal adjusting bolt 5b; the upper clamp 5c being connected to the longitudinal adjusting bolt 5b via a nut; and a set of guide posts 5d provided on the lower clamp 5a, the upper ends of which pass through the upper clamp 5c and extend upwards by a certain distance. By rotating the longitudinal adjusting bolt 5b, the upper clamp 5c moves up and down, causing the upper clamp 5c and the lower clamp 5a to open or close, thereby completing the clamping or release of the potentiometer to be tested.

[0014] After being integrally formed on the component mounting platform 1, the control panel 6 is mounted on the control panel 6, which includes a circuit start switch a, a reset switch b, a green indicator light c, a red indicator light d, and a resistance value display e.

[0015] The component mounting platform 1 is equipped with a resistance sampling module assembly that forms an electrical signal control cooperation with the component mounting platform 1, the rotary motor 2, the control surface 6, and the chuck 3.

[0016] The resistance sampling module assembly includes a resistance sampling module that is electrically connected to the claw 3 within the component mounting platform 1. The resistance sampling module is electrically connected to the PLC in the control panel 6 via wires. The component mounting platform 1 also includes a transformer and a relay that are electrically connected to the PLC. The relay is also electrically connected to the rotary motor 2.

[0017] Work process: First, the device to be tested is clamped and fixed on the upper and lower clamps. Then, the horizontal adjusting bolt is rotated to move the potentiometer towards the rotary motor until the potentiometer's testing end knob can be clamped onto the jaw 3. After clamping, the switch on the control panel 6 is activated to start the rotary motor 2, which rotates the jaw 3 and the potentiometer knob. The device's resistance value changes accordingly with the rotation of the knob. The resistance value display shows whether the resistance value increases or decreases. When the rotary motor is working, if the resistance value suddenly drops to zero or reaches a predetermined value, the PLC controls the relay circuit to stop the motor and triggers an alarm with red and green lights.

[0018] If, during the testing process, the resistance suddenly drops to zero or the peak resistance value suddenly jumps, the motor will stop working and a red alarm will be displayed on the potentiometer, indicating that the test is unqualified. If, during the testing process, the resistance suddenly drops to zero or the peak resistance value suddenly jumps, the PLC will control the rotary motor to stop working when the predetermined resistance value is reached, and a green alarm will be displayed on the potentiometer, indicating that the test is qualified.

Claims

1. A device for testing the smoothness of a potentiometer comprising a component mounting table (1), characterised in that: The rotating motor (2) is installed on the component mounting table (1), the pawl (3) corresponding to the potentiometer is installed on the output shaft of the rotating motor (2), the movable frame body (4) is arranged on the component mounting table (1), the potentiometer clamp assembly (5) corresponding to the potentiometer is arranged on the movable frame body (4), the control table surface (6) is arranged on the component mounting table (1), and the resistance sampling module assembly is arranged in the component mounting table (1) and forms the electric signal control cooperation with the component mounting table (1), the rotating motor (2), the control table surface (6) and the pawl (3).

2. The device for testing the smoothness of a potentiometer according to claim 1, characterized in that: The resistance sampling module assembly comprises: a resistance sampling module arranged in the component mounting table (1) and forming electric signal connection cooperation with the pawl (3), the resistance sampling module is connected with the PLC in the control table surface (6) through wires to form electric signal connection cooperation, and the transformer and the relay connected with the PLC are also arranged in the component mounting table (1) and form electric signal connection cooperation.

3. The device for testing the smoothness of a potentiometer according to claim 1, characterized in that: The potentiometer clamp assembly (5) comprises: a lower clamp body (5a) installed on the movable frame body (4), a longitudinal adjusting bolt (5b) penetratingly arranged on the movable frame body (4), an upper clamp body (5c) corresponding to the lower clamp body (5a) and sleeved on the longitudinal adjusting bolt (5b), the upper clamp body (5c) is connected with the longitudinal adjusting bolt (5b) through a nut, a group of guide columns (5d) are arranged on the lower clamp body (5a), and the upper end portions of the guide columns (5d) penetrate through the upper clamp body (5c) and extend upwards by a certain distance.

4. The device for testing the smoothness of a potentiometer according to claim 1, characterized in that: The movable frame body (4) comprises: a horizontal rotating bolt (4a) arranged on the component mounting table (1), a movable block (4b) corresponding to the horizontal rotating bolt (4a) and sleeved on the horizontal rotating bolt (4a), a support (4c) cross-connected on the movable block (4b), and a movable sliding groove (4d) corresponding to the movable block (4b) and arranged on the component mounting table (1).

5. The device for testing the smoothness of a potentiometer according to claim 1, characterized in that: The control table surface (6) comprises a circuit starting switch, a green indicating lamp, a red indicating lamp and a resistance value display.

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