Annular piezoresistor pulse test fixture

Abstract

The utility model relates to a test fixture, in particular to an annular piezoresistor pulse test fixture, which comprises a rotating plate, a fixed frame, a first stepping motor, a guide rail, a pulse test device and the like. One side of the fixing frame is fixedly connected with a fixing plate, the fixing plate is provided with a pulse testing device, the fixing plate is slidably connected with a connecting plate, one end of the connecting plate is rotatably connected with a pulse testing head, the pulse testing device is electrically connected with the pulse testing head through a connecting wire, and a first stepping motor is installed in the fixing frame. And an output shaft of the first stepping motor is connected with a rotating plate. According to the utility model, through the design of the rotating plate and the guide rail, annular varistors of different specifications are allowed to be conveniently placed on the device for detection, and through the cooperation of the second cylinder and the clamping plate, the annular varistors can be effectively fixed without replacing or adjusting equipment parts, so that the universality and the flexibility of the equipment are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a test fixture, especially to a ring type varistor pulse test fixture. BACKGROUND

[0002] In the electronic industry, as an important electronic component, the ring type varistor is widely used in various circuits to protect the circuit from abnormal conditions such as overvoltage and overcurrent. However, the performance and quality of the ring type varistor are directly related to the stability and reliability of the circuit, so strict pulse detection is very important.

[0003] The traditional ring type varistor pulse detection device can only detect a certain type of ring type varistor. When different types of ring type varistors need to be detected, the ring type varistor cannot be effectively fixed, thereby increasing the difficulty of device detection and leading to a decrease in detection efficiency.

[0004] Therefore, a ring type varistor pulse test fixture needs to be designed. INVENTION CONTENTS

[0005] In order to overcome the shortcoming that the traditional ring type varistor pulse detection device cannot fix different types of ring type varistors, the technical problem to be solved is to provide a ring type varistor pulse test fixture.

[0006] The technical scheme of the utility model is: a ring type varistor pulse test fixture, comprising a rotating plate, a fixed frame, a first stepper motor, a guide rail, a pulse test device, a connecting line, a pulse test head, a fixed plate, a connecting plate, a clamp plate and a second air cylinder, the fixed frame is fixedly connected with the fixed plate on one side, the pulse test device is installed on the fixed plate, the fixed plate is slidingly connected with the connecting plate, the connecting plate is rotatably connected with the pulse test head at one end, the pulse test device is electrically connected with the pulse test head through the connecting line, the first stepper motor is installed in the fixed frame, the output shaft of the first stepper motor is connected with the rotating plate, the guide rail is movably arranged above the rotating plate, the second air cylinder is installed on the two side walls of the guide rail, the piston rod of the second air cylinder is connected with the clamp plate, and the clamp plate is correspondingly arranged below the pulse test head.

[0007] As a preferred, the side wall of the fixed frame is fixedly connected with a supporting leg for supporting the fixed frame.

[0008] As a preferred, the side of the fixed plate away from the pulse test head is installed with a first air cylinder, and the piston rod of the first air cylinder is connected with the end of the connecting plate away from the pulse test head.

[0009] As a preferred, the side of the connecting plate close to the pulse test head is installed with a second stepper motor, and a gear assembly is arranged between the output shaft of the second stepper motor and the pulse test head, and the second stepper motor drives the pulse test head to rotate through the gear assembly.

[0010] As preferred, the fixed frame is fixedly connected with a mounting frame, the mounting frame is fixedly connected with a guide rod, the guide rod is slidingly connected with a limiting plate, a spring is wound on the guide rod, and two ends of the spring are respectively connected with the limiting plate and an end of the guide rod away from the mounting frame, and the mounting frame is slidingly connected with a collecting frame inside.

[0011] As preferred, the guide rail is fixedly connected with a mounting plate and a third cylinder on one side wall, the piston rod of the third cylinder is fixedly connected with a baffle for blocking the clamping plate, and the mounting plate is slidingly connected with the clamping plate.

[0012] The utility model discloses the beneficial effects: 1, the utility model discloses through the design of rotating plate and guide rail allows different specifications annular piezoresistor to be conveniently placed on the device and carry out detection, and through the cooperation of second cylinder and clamping plate can effectively fix annular piezoresistor, need not replace or adjust equipment parts, improve the versatility and flexibility of equipment.

[0013] 2, the convenient dismounting design of collecting frame, the user is convenient to centralized processing annular piezoresistor after detection, simultaneously, the design of baffle also guarantees the closed property of clamping plate movable slot under standby state, prevents annular piezoresistor from being stuck, and the maintenance difficulty is reduced.

[0014] 3, through the second step motor drive pulse test head rotation, realizes the comprehensive detection to different parts of annular piezoresistor, and further improves the accuracy and comprehensiveness of detection. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three-dimensional structure schematic view of the utility model.

[0016] Figure 2 It is the three-dimensional structure sectional view of rotating plate of the utility model.

[0017] Figure 3 It is the three-dimensional structure sectional view of mounting frame of the utility model.

[0018] Figure 4 It is the three-dimensional structure sectional view of guide rail of the utility model.

[0019] Figure 5 It is the A place enlarged view of the utility model Figure 4 .

[0020] Explanation of reference numerals in the attached drawings: 1-Support foot, 2-Rotating plate, 3-Fixing frame, 301-First stepper motor, 4-Guide rail, 5-Pulse testing device, 501-Connecting wire, 502-Pulse testing head, 503-First cylinder, 504-Fixing plate, 505-Gear assembly, 506-Second stepper motor, 507-Connecting plate, 6-Mounting frame, 601-Limiting plate, 602-Guide rod, 603-Spring, 604-Collection frame, 7-Clamping plate, 701-Second cylinder, 702-Mounting plate, 703-Third cylinder, 704-Baffle. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Example: A ring-shaped varistor pulse test fixture, such as Figures 1-5 As shown, the device includes a rotating plate 2, a fixed frame 3, a first stepper motor 301, a guide rail 4, a pulse testing device 5, a connecting line 501, a pulse testing head 502, a fixed plate 504, a connecting plate 507, a clamping plate 7, and a second cylinder 701. A fixed plate 504 is fixedly connected to one side of the fixed frame 3. The pulse testing device 5 is mounted on the fixed plate 504. A connecting plate 507 is slidably connected to the fixed plate 504. One end of the connecting plate 507 is rotatably connected to the pulse testing head 502. The pulse testing device 5 is electrically connected to the pulse testing head 502 via the connecting line 501. The first stepper motor 301 is installed inside the fixed frame 3. The output shaft of the first stepper motor 301 is connected to the rotating plate 2. A guide rail 4 is movably mounted above the rotating plate 2. The two side walls of the guide rail 4 correspond to... A second cylinder 701 is installed, and the piston rod of the second cylinder 701 is connected to a clamping plate 7. The clamping plate 7 is correspondingly positioned below the pulse test head 502. A support foot 1 for supporting the fixed frame 3 is fixedly connected to the side wall of the fixed frame 3. A first cylinder 503 is installed on the side of the fixed plate 504 facing away from the pulse test head 502. The piston rod of the first cylinder 503 is connected to the end of the connecting plate 507 away from the pulse test head 502. Here, when the first stepper motor 301 is started, the first stepper motor 301 drives the output shaft to rotate, and the output shaft of the first stepper motor 301 drives the rotating plate 2 to rotate. When the first cylinder 503 is started, the piston rod of the first cylinder 503 performs a telescopic movement, so that the piston rod of the first cylinder 503 drives the pulse test head 502 to move up and down.

[0023] like Figure 2 and Figure 4As shown, the connecting plate 507 is installed with a second stepper motor 506 near one side of the pulse test head 502, a gear assembly 505 is arranged between the output shaft of the second stepper motor 506 and the pulse test head 502, and the second stepper motor 506 drives the pulse test head 502 to rotate through the gear assembly 505. Here, the second stepper motor 506 is started, the second stepper motor 506 drives the gear connected with the output shaft of the second stepper motor 506 in the gear assembly 505 to rotate, and the gear connected with the output shaft of the second stepper motor 506 in the gear assembly 505 drives the gear connected with the pulse test head 502 to rotate, so that the second stepper motor 506 drives the pulse test head 502 to rotate, so that the pulse test head 502 contacts different parts of the annular pressure sensitive resistor for detection, thereby improving the accuracy of the device detection.

[0024] As shown in Figure 2 and Figure 3 As shown, the fixed frame 3 is fixedly connected with a mounting frame 6, the mounting frame 6 is fixedly connected with a guide rod 602, the guide rod 602 is slidingly connected with a limiting plate 601, a spring 603 is wound on the guide rod 602, the two ends of the spring 603 are respectively connected with the limiting plate 601 and the end of the guide rod 602 away from the mounting frame 6, and the mounting frame 6 is slidingly connected with a collecting frame 604. Here, the limiting plate 601 is slid upward and no longer contacts the collecting frame 604, at which time the spring 603 is contracted to release the fixation of the collecting frame 604, and then the collecting frame 604 can be slid out to facilitate the user to concentrate on processing the annular pressure sensitive resistor. Then the collecting frame 604 is moved to the initial position again, the limiting plate 601 is loosened, at which time the spring 603 returns to the initial state and pushes the limiting plate 601 to make the limiting plate 601 return to the initial position, and the limiting plate 601 fixes the collecting frame 604 again.

[0025] As shown in Figure 5 As shown, the guide rail 4 is fixedly connected with a mounting plate 702 and a third air cylinder 703 on one side wall, the piston rod of the third air cylinder 703 is fixedly connected with a baffle plate 704 for blocking the clamping plate 7, and the mounting plate 702 slidingly contacts the clamping plate 7. Here, when the clamping plate 7 is in standby state, the piston rod of the third air cylinder 703 is extended, the piston rod of the third air cylinder 703 drives the baffle plate 704 to move downward to block the clamping plate 7, preventing the annular pressure sensitive resistor from entering the movable groove of the clamping plate 7, and ensuring stable operation of the detection work. When it is necessary to clamp the annular pressure sensitive resistor, the piston rod of the third air cylinder 703 is retracted, the piston rod of the third air cylinder 703 drives the baffle plate 704 to move upward, so that the baffle plate 704 no longer blocks the clamping plate 7.

[0026] The device is used in pulse detection of annular piezoresistor, when in use, the first stepper motor 301 is started, the first stepper motor 301 drives the output shaft to rotate, the output shaft of the first stepper motor 301 drives the rotating plate 2 to rotate, then different specifications of annular piezoresistor can be placed on the rotating plate 2 within the range of the guide rail 4, the rotating plate 2 drives the annular piezoresistor on the rotating plate 2 to move, when the annular piezoresistor moves below the pulse test head 502, the first stepper motor 301 is paused to stop the rotating plate 2 from rotating, then the second cylinder 701 is started, the piston rod of the second cylinder 701 extends, the piston rod of the second cylinder 701 pushes the clamping plate 7 to move inward, so that the two clamping plates 7 approach each other, so as to clamp and fix the annular piezoresistor, preventing the annular piezoresistor from deviating during detection. Then the first cylinder 503 is started, the piston rod of the first cylinder 503 drives the pulse test head 502 to move downward, so that the pulse test head 502 contacts the annular piezoresistor, the pulse test device 5 applies pulse voltage to the annular piezoresistor through the pulse test head 502, at the same time, the pulse test device 5 detects the voltage and current changes in real time during the application of pulse voltage, and judges whether the annular piezoresistor is qualified according to the detected data, so as to realize the detection of the annular piezoresistor, after completion, the piston rod of the second cylinder 701 retracts, the piston rod of the second cylinder 701 pushes the clamping plate 7 to move outward, so that the two clamping plates 7 are separated from each other to release the fixing effect on the annular piezoresistor, then the first stepper motor 301 is started again, so that the rotating plate 2 drives the annular piezoresistor on the rotating plate 2 to move, when the annular piezoresistor moves to the end of the guide rail 4, under the guidance of the guide rail 4 and the extrusion effect of the annular piezoresistor behind, the annular piezoresistor falls into the collecting frame 604 below, thus the work is completed.

[0027] It should be understood that the embodiments are only used to illustrate the present application, but not to limit the scope of the present application. In addition, it should be understood that after reading the content taught by the present application, those skilled in the art can make various modifications or modifications to the present application, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims

1. A ring-shaped varistor pulse test fixture, comprising a fixed frame (3), a pulse test device (5), a connecting wire (501), a pulse test head (502), a fixed plate (504), and a connecting plate (507), wherein a fixed plate (504) is fixedly connected to one side of the fixed frame (3), the pulse test device (5) is mounted on the fixed plate (504), the connecting plate (507) is slidably connected to the fixed plate (504), the pulse test head (502) is rotatably connected to one end of the connecting plate (507), and the pulse test device (5) is electrically connected to the pulse test head (502) through the connecting wire (501), characterized in that: It also includes a rotating plate (2), a first stepper motor (301), a guide rail (4), a clamping plate (7), and a second cylinder (701). The first stepper motor (301) is installed inside the fixed frame (3). The output shaft of the first stepper motor (301) is connected to the rotating plate (2). The guide rail (4) is movably arranged above the rotating plate (2). The second cylinder (701) is installed on both sides of the guide rail (4). The piston rod of the second cylinder (701) is connected to the clamping plate (7). The clamping plate (7) is set below the pulse test head (502).

2. The ring-shaped varistor pulse test fixture as described in claim 1, characterized in that: The side wall of the fixed frame (3) is fixedly connected with support feet (1) for supporting the fixed frame (3).

3. The ring-shaped varistor pulse test fixture as described in claim 2, characterized in that: A first cylinder (503) is installed on the side of the fixing plate (504) facing away from the pulse test head (502). The piston rod of the first cylinder (503) is connected to the end of the connecting plate (507) away from the pulse test head (502).

4. The ring-shaped varistor pulse test fixture as described in claim 3, characterized in that: A second stepper motor (506) is installed on the side of the connecting plate (507) near the pulse test head (502). A gear assembly (505) is provided between the output shaft of the second stepper motor (506) and the pulse test head (502). The second stepper motor (506) drives the pulse test head (502) to rotate through the gear assembly (505).

5. The ring-shaped varistor pulse test fixture as described in claim 4, characterized in that: The fixed frame (3) is fixedly connected to the mounting frame (6), the mounting frame (6) is fixedly connected to the guide rod (602), the guide rod (602) is slidably connected to the limit plate (601), the guide rod (602) is wound with a spring (603), the two ends of the spring (603) are respectively connected to the limit plate (601) and the end of the guide rod (602) away from the mounting frame (6), and the mounting frame (604) is slidably connected inside the mounting frame (6).

6. The ring-shaped varistor pulse test fixture as described in claim 5, characterized in that: A mounting plate (702) and a third cylinder (703) are fixedly connected to one side wall of the guide rail (4). The piston rod of the third cylinder (703) is fixedly connected to a baffle (704) for sealing the clamping plate (7). The mounting plate (702) and the clamping plate (7) are slidably connected.

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