A resistance substrate detection device and a detection method thereof

Abstract

The application discloses a kind of resistance substrate detection device and its detection method, it is related to resistance substrate detection technical field, including base, the side of base upper end is equipped with shell, the inside of shell is provided with detection table, and detection table is embedded to the inside of base, the front and back of detection table upper end surface is equipped with guide slot, the inside of guide slot is provided with positioning mechanism, the positioning mechanism includes fixed rod, the inside sliding of fixed rod is equipped with movable rod, first spring is installed between the inner chamber of fixed rod and movable rod, the two sides of detection table are provided with longitudinal displacement mechanism, two longitudinal displacement mechanisms are equipped with transverse displacement mechanism, detection mechanism is arranged below transverse displacement mechanism, solve the detection mode of detection device is relatively single and cannot accurately position the use direction of resistance substrate and cannot be targeted to improve according to the defect that there is influence resistance value.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of resistance substrate detection, in particular to a resistance substrate detection device and a detection method thereof. BACKGROUND

[0002] The resistance substrate detection device is an automatic test equipment designed to meet the high-precision and high-efficiency detection requirements of resistance elements in modern electronic manufacturing industry. The device integrates advanced sensing technology, precise measurement circuit and efficient data processing algorithm, aiming to realize fast and accurate measurement of each resistance value on the resistance substrate, detect the welding quality, position deviation and potential defects of the resistance, ensure the stability and reliability of the resistance substrate in electronic products, and improve the overall product quality and production efficiency.

[0003] For example, the Chinese authorized patent "Resistance substrate testing device" with publication number CN206832950U includes a test box, a probe assembly and a test circuit are arranged in the test box; a resistance substrate mounting seat is arranged on one side surface of the test box, a plurality of detection holes are arranged on the resistance substrate mounting seat according to a preset rule, the probes in the probe assembly can be extended from the detection holes and contact the resistance substrate arranged on the resistance substrate mounting seat, the test circuit is used for testing the resistance of the probe contact position on the resistance substrate; a display device is used for displaying the test result; a control device is used for controlling the operation of the probe assembly and the test circuit.

[0004] The above-mentioned prior art can realize the detection of the resistance substrate, but the detection method is relatively single, without considering the change of the resistance value of the resistance substrate in different environments, so that the use direction of the resistance substrate cannot be accurately positioned, and targeted improvement cannot be made according to the defects affecting the resistance value, thus cannot meet the existing requirements. Therefore, we propose a resistance substrate detection device and a detection method thereof. SUMMARY

[0005] The purpose of the present application is to provide a resistance substrate detection device and a detection method thereof, to solve the problem of the detection method of the detection device being relatively single, which cannot accurately position the use direction of the resistance substrate and cannot make targeted improvement according to the defects affecting the resistance value.

[0006] In order to achieve the above object, the application provides the following technical scheme: a resistance substrate detection device and a detection method thereof, which comprises a base, a shell is mounted on one side of the upper end of the base, a detection table is arranged in the shell, the detection table is embedded into the base, guide grooves are arranged on the front and back of the upper end surface of the detection table, a positioning mechanism is arranged in the guide grooves, the positioning mechanism comprises a fixed rod, the fixed rod is in sliding position limitation with the positioning mechanism, a movable rod is slidably arranged in the fixed rod, the movable rod extends to the upper end of the detection table, a bent cross rod is arranged at the top end of the movable rod, a first spring is arranged between the inner cavity of the fixed rod and the movable rod, longitudinal displacement mechanisms are arranged on both sides of the detection table, the longitudinal displacement mechanisms are fixed to the base through support frames, a transverse displacement mechanism is arranged between the two longitudinal displacement mechanisms, and a detection mechanism is arranged below the transverse displacement mechanism.

[0007] Preferably, the detection mechanism comprises a first electric push rod, a rotating adjusting seat is mounted on the movable end of the first electric push rod, a distance adjusting mechanism is rotatably mounted below the rotating adjusting seat, the output shaft of the built-in motor of the rotating adjusting seat is fixed to the distance adjusting mechanism, and detection needles are symmetrically arranged on both sides below the distance adjusting mechanism.

[0008] Preferably, a chuck is arranged in the detection table, clamping jaws are arranged on both sides of the upper end surface of the chuck, the limiting threads on the lower end surface of the clamping jaws are engaged with the plane threads on the contact end surface of the chuck, the upper end surface of the clamping jaws is fixed to the fixed rod through screws, a servo motor is arranged on one side of the lower end inside the detection table, a gear is mounted on the output shaft of the servo motor, a gear ring is arranged on the lower end of the outer wall of the chuck, and the gear ring is engaged with the gear.

[0009] Preferably, a through hole is arranged at the middle position of the detection table, the through hole penetrates the chuck, a second electric push rod is fixedly arranged at the bottom of the through hole, a mounting seat is fixedly arranged at the movable end of the second electric push rod, a vibration mechanism is arranged in the mounting seat, a top plate is arranged above the vibration mechanism, and the top plate is flush with the upper end surface of the detection table.

[0010] Preferably, the vibration mechanism comprises a motor, eccentric counterweights are fixedly arranged on the output shafts at both ends of the motor, a second spring is arranged between the lower end of the motor shell and the mounting seat, and the upper end of the motor shell is fixed to the top plate.

[0011] Preferably, threaded rods are rotatably arranged in the longitudinal displacement mechanisms and the transverse displacement mechanism, sliding blocks are arranged on the outer portions of the threaded rods, the inner screw holes of the sliding blocks are matched with the outer threads of the threaded rods, the sliding blocks in the longitudinal displacement mechanisms are fixed to the side surfaces of the transverse displacement mechanism, and the sliding blocks in the transverse displacement mechanism are fixed to the upper end of the first electric push rod.

[0012] Preferably, the rear shell of the shell is provided with an air outlet grille, one side of the inside of the base is provided with a temperature control cavity, and the temperature control cavity and the air duct at the rear end of the air outlet grille are provided with a conveying pipe, the outside of the conveying pipe is provided with a fan, the temperature control cavity comprises a medium temperature adjusting mechanism, the medium temperature adjusting mechanism is composed of a first heat exchanger, a second heat exchanger, a compressor, an expansion valve and a four-way reversing valve, the first heat exchanger is installed inside the temperature control cavity, the second heat exchanger is arranged in the cavity below the temperature control cavity, the compressor is arranged on one side of the second heat exchanger, and the first heat exchanger, the second heat exchanger, the compressor, the expansion valve and the four-way reversing valve are connected by a medium conveying pipe.

[0013] Preferably, the air cylinder is installed on both sides of the inner cavity of the interval adjusting mechanism, one end of the air cylinder is fixedly installed with a sliding rod, and the sliding rod is slidably connected with the rod body at the upper end of the detection needle, one end of the sliding rod located outside the interval adjusting mechanism is provided with a third spring, and the two ends of the third spring are fixedly connected with the interval adjusting mechanism and the rod body at the upper end of the detection needle.

[0014] Preferably, the front end of the shell is provided with a cabinet door, and the cabinet door is connected with the shell through a hinge, and the other side of the upper end surface of the base is provided with a controller.

[0015] The detection method of the resistance substrate detection device comprises the following steps:

[0016] Step one: the staff first opens the cabinet door of the detection device, places the resistance substrate to be detected in the middle position of the detection table, ensures that the resistance substrate is stably placed, then closes the cabinet door, and creates a relatively sealed environment for the following detection steps;

[0017] Step two: start the servo motor, the output shaft drives the gear to rotate, the gear is engaged with the tooth ring at the bottom of the chuck, drives the chuck to rotate, at the same time, the limiting screw thread at the upper end of the claw is engaged with the plane screw thread at the contact end surface of the chuck, when the plane screw thread rotates, it drives the claw to move along the direction of the guide groove, and the claw moves to the side surface of the resistance substrate to clamp and fix it;

[0018] Step three: start the motor at one end of the longitudinal displacement mechanism, the output shaft drives the threaded rod to rotate, and through the cooperation with the sliding block, the rotary motion is converted into linear motion, which drives the horizontal displacement mechanism to adjust longitudinally, and in the same way, through the cooperation of the threaded rod and the sliding block in the horizontal displacement mechanism, the horizontal movement of the detection mechanism is realized, until the detection mechanism is aligned with the detection point of the resistance substrate, according to the requirement of the detection point, the motor in the rotary adjusting seat is started to adjust the angle of the detection needle, then the interval of the detection needle is fine adjusted through the air cylinder in the interval adjusting mechanism; the detection needle is lowered by the first electric push rod, so that it is connected with the detection point position of the resistance substrate, and the controller is matched to detect the resistance value of the resistance substrate and record the data.

[0019] Step four, low temperature detection: start the compressor, the refrigerant becomes high pressure gas through the compressor, condenses and releases heat through the second heat exchanger to become high pressure liquid, the high pressure liquid becomes low temperature and low pressure liquid through the throttling device, evaporates and absorbs heat through the first heat exchanger to become low temperature and low pressure gas, absorbs heat of the air in the temperature control cavity, and the cold air is transported into the cavity at the rear end of the shell through the fan, and then the space in the shell is cooled through the air outlet grille to meet the detection requirements of the resistance value in the low temperature environment;

[0020] Step five, high temperature detection: change the flow direction of the refrigerant through the four-way reversing valve, the refrigerant first becomes high pressure gas through the compressor, then condenses and releases heat through the first heat exchanger to become high pressure liquid, heats the air inside the temperature control cavity, and meets the detection requirements of the resistance value in the high temperature environment;

[0021] Step six, bending detection: start the second electric push rod, drive the mounting seat to rise, make the top plate contact with the resistance substrate, and as the second electric push rod continues to lift, the resistance substrate is blocked by the movable rods of the positioning mechanism on both sides, forming a bending state, and the resistance value is detected in this state;

[0022] Step seven, vibration detection: use the second electric push rod to lift the resistance substrate away from the end surface of the detection table, start the motor, the eccentric counterweight wheels at both ends of the motor rotate at high speed to generate high frequency vibration, the vibration force is transmitted to the resistance substrate through the top plate to realize high frequency vibration; the detection needle is movably connected with the resistance substrate through the sliding rod and the third spring, and is always in contact with the bottom surface of the resistance substrate.

[0023] Step eight, after all the detection steps are completed, all the motors and detection devices are turned off, the cabinet door is opened, the detected resistance substrate is taken out, and subsequent processing or recording of the detection results is performed.

[0024] Compared with the prior art, the beneficial effects of the present application are:

[0025] The application adopts an automatic detection mechanism, which significantly improves the efficiency and accuracy of resistance substrate detection. The staff only needs to simply operate, open the cabinet door and place the resistance substrate in the center of the detection table, and then start the servo motor to drive the gear rotation. Through the precise meshing with the bottom tooth ring of the chuck, the stable rotation of the chuck is realized. During this process, the claw moves accurately along the guide groove under the guidance of the plane thread, and the resistance substrate is firmly clamped to ensure the position stability during the detection process. Further, through the motor drive of the longitudinal and transverse displacement mechanism, the rotation movement of the threaded rod is ingeniously converted into the linear movement of the detection mechanism, realizing the accurate positioning of the detection mechanism in three-dimensional space. In addition, the motor in the rotary adjusting seat can flexibly adjust the angle of the detection needle, and the spacing adjusting mechanism accurately controls the spacing between the detection needles through the cylinder, and finally the first electric push rod drives the detection needle to descend and tightly contact with the detection point of the resistance substrate. This series of automatic and fine adjustment mechanism, combined with the intelligent control of the controller, not only greatly improves the detection efficiency, but also ensures the accuracy and reliability of the resistance value detection, providing strong technical support for the quality control of resistance substrate in electronic manufacturing industry.

[0026] 2、The application creates a highly controllable and relatively sealed environment for the detection of resistance substrates by integrating a temperature detection mechanism with the shell and cabinet door structure. When resistance substrates need to be detected under low temperature conditions, the system starts the compressor, and the refrigerant undergoes a phase change process from high-pressure gas to high-pressure liquid, and then to low-temperature and low-pressure liquid through the throttling device. Subsequently, in the first heat exchanger, the refrigerant evaporates and absorbs heat, effectively reducing the temperature of the air in the temperature control cavity. With the powerful action of the negative pressure fan, the cold air is quickly delivered to the rear cavity of the shell and evenly distributed to the entire detection space through the air outlet grille, thereby quickly and accurately reaching the required low-temperature detection conditions. Similarly, under high-temperature detection requirements, the flow direction of the refrigerant is changed through the switching of the four-way valve. At this time, the refrigerant becomes a high-pressure gas under the action of the compressor and directly condenses and releases heat in the first heat exchanger, converting into a high-pressure liquid. This process effectively releases heat energy to heat the air in the temperature control cavity. In this way, the space inside the shell can quickly rise to the temperature required for high-temperature detection of the resistance substrate. Through the precise temperature regulation mechanism, the detection environment can be quickly raised and lowered in a very short time, and the resistance substrate can be accurately detected under stable temperature conditions, improving the accuracy and efficiency of the detection, providing strong technical support for the performance testing of resistance substrates under different temperature conditions, and meeting the diversified needs in electronic product research and development, production and quality control.

[0027] 3、The mechanical property detection mechanism can detect the resistance value of the resistance substrate in the bending state and the vibration state, when bending, the second electric push rod is opened, the mounting seat is lifted, the top plate in the mounting seat is connected with the resistance bottom plate, the resistance substrate is lifted, when the two sides of the resistance substrate are blocked by the movable rod of the positioning mechanism, the resistance substrate presents the bending state, and the resistance value is detected in the state, when the vibration detection is carried out, the resistance substrate is lifted by the second electric push rod, the motor is opened after the resistance substrate is away from the upper end surface of the detection table, the eccentric counterweight wheels at the two ends of the motor rotate at high speed, the high-frequency vibration of the body is realized, the vibration force is transmitted to the resistance substrate through the top plate, the high-frequency vibration of the resistance substrate is realized, the detection needle is always in contact with the bottom surface of the resistance substrate through the sliding rod and the third spring, and the stability of the resistance value detection of the resistance substrate can be ensured even in the vibration state. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the overall perspective view of the application;

[0029] Figure 2 It is the internal structure perspective view of the shell of the application;

[0030] Figure 3 It is the internal structure schematic view of the detection table of the application;

[0031] Figure 4 It is the chuck and the mechanical property detection mechanism perspective view of the application;

[0032] Figure 5 It is the transmission structure schematic view of the longitudinal displacement mechanism and the transverse displacement mechanism of the application;

[0033] Figure 6 It is the thermal stability detection mechanism structure schematic view of the application;

[0034] Figure 7 It is the internal structure schematic view of the spacing adjusting mechanism of the application.

[0035] In the figure: 1, base; 2, shell; 3, cabinet door; 4, detection table; 5, longitudinal displacement mechanism; 6, transverse displacement mechanism; 7, detection mechanism; 8, first electric push rod; 9, rotary adjusting seat; 10, spacing adjusting mechanism; 11, detection needle; 12, guide groove; 13, positioning mechanism; 14, through hole; 15, fixed rod; 16, first spring; 17, movable rod; 18, chuck; 19, clamping jaw; 20, second electric push rod; 21, mounting seat; 22, top plate; 23, motor; 24, second spring; 25, gear ring; 26, servo motor; 27, gear; 28, eccentric weight wheel; 29, threaded rod; 30, sliding block; 31, air outlet grille; 32, controller; 33, temperature control cavity; 34, first heat exchanger; 35, second heat exchanger; 36, compressor; 37, air cylinder; 38, sliding rod; 39, third spring. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0037] Please refer to Figures 1-7 An embodiment provided by the present application: a resistance substrate detection device and a detection method thereof, comprising a base 1, a shell 2 is installed on one side of the upper end of the base 1, a cabinet door 3 is installed on the front end of the shell 2, and the cabinet door 3 is connected with the shell 2 through a hinge, a controller 32 is arranged on the other side of the upper end surface of the base 1, a detection table 4 is arranged in the inside of the shell 2, and the detection table 4 is embedded into the inside of the base 1, guide grooves 12 are arranged on the front and back of the upper end surface of the detection table 4, a positioning mechanism 13 is arranged in the inside of the guide groove 12, the positioning mechanism 13 comprises a fixed rod 15, the fixed rod 15 is in sliding limit with the positioning mechanism 13, a movable rod 17 is slidably installed in the inside of the fixed rod 15, the movable rod 17 extends to the upper end of the detection table 4, a bent cross rod is arranged at the top end of the movable rod 17, a first spring 16 is installed between the inner cavity of the fixed rod 15 and the movable rod 17, a chuck 18 is installed in the inside of the detection table 4, clamping jaws 19 are installed on both sides of the upper end surface of the chuck 18, the limiting screw threads at the lower end surface of the clamping jaws 19 are engaged with the plane screw threads at the contact end surface of the chuck 18, and the upper end surface of the clamping jaws 19 is fixed with the fixed rod 15 through screws, a servo motor 26 is installed on one side of the lower end in the inside of the detection table 4, a gear 27 is installed on the output shaft of the servo motor 26, a gear ring 25 is arranged at the lower end of the outer wall of the chuck 18, and the gear ring 25 is engaged and connected with the gear 27.

[0038] The design of the chuck 18 and the chuck jaw 19 realizes stable clamping and fixing of the resistance substrate through the meshing of the gear 27 driven by the servo motor 26 and the tooth ring 25. This clamping method is not only simple to operate, but also has uniform clamping force, effectively preventing the movement or shaking of the resistance substrate during detection, and improving the accuracy and reliability of detection.

[0039] Please refer to Figure 1 and Figure 2 , the lower part of the transverse displacement mechanism 6 is provided with a detection mechanism 7, the detection mechanism 7 includes a first electric push rod 8, the movable end of the first electric push rod 8 is provided with a rotary adjusting seat 9, the lower part of the rotary adjusting seat 9 is rotatably provided with a spacing adjusting mechanism 10, and the output shaft of the built-in motor of the rotary adjusting seat 9 is fixed with the spacing adjusting mechanism 10, and two detection needles 11 are symmetrically arranged on the lower part of the spacing adjusting mechanism 10;

[0040] Through the combination of the transverse displacement mechanism 6 and the detection mechanism 7, accurate detection of any position on the resistance substrate can be realized. The first electric push rod 8 can drive the detection mechanism 7 to finely control the displacement in the vertical direction, ensuring that the detection needle 11 can accurately align with the detection point on the resistance substrate. The design of the rotary adjusting seat 9 allows the angle of the detection needle 11 to be flexibly adjusted according to actual needs. This is particularly important for detecting detection points in different directions or inclined angles on the resistance substrate, ensuring the comprehensiveness and accuracy of detection. The spacing adjusting mechanism 10 can adjust the distance between the two detection needles 11 as needed, which makes the detection device can adapt to the detection needs of resistance substrates of different sizes and specifications. This design enhances the versatility and flexibility of the detection device.

[0041] Please refer to Figure 3 and Figure 4 , the middle position of the detection table 4 is provided with a through hole 14, and the through hole 14 penetrates the chuck 18, the bottom of the through hole 14 is fixedly installed with a second electric push rod 20, the movable end of the second electric push rod 20 is fixedly installed with a mounting seat 21, the inside of the mounting seat 21 is provided with a vibration mechanism, the upper part of the vibration mechanism is provided with a top plate 22, and the top plate 22 is flush with the upper end surface of the detection table 4, the vibration mechanism includes a motor 23, the output shafts at both ends of the motor 23 are fixedly installed with eccentric counterweights 28, the lower end of the motor 23 shell is installed with a second spring 24 between the mounting seat 21, and the upper end of the motor 23 shell is fixed with the top plate 22;

[0042] This design not only realizes the basic detection of the resistance substrate, but also adds the vibration test function. This is crucial for evaluating the performance and stability of the resistance substrate in a vibrating environment, helping to discover potential connection problems or structural weaknesses. The combination of the motor 23 and the eccentric weight wheel 28 constitutes an efficient vibration source. When the motor starts, the eccentric weight wheel generates centrifugal force, causing the entire vibration mechanism to produce periodic vibrations. This design can produce stable and adjustable vibration frequency and amplitude to meet different testing needs. The second spring 24 plays a role in shock absorption and buffering, protecting the motor 23 and the entire vibration mechanism from excessive vibration forces. At the same time, it ensures that the vibration is smoothly transmitted to the resistance substrate without excessive noise or vibration interference.

[0043] Please refer to Figure 2 and Figure 5 , two longitudinal displacement mechanisms 5 are arranged on both sides of the detection table 4, and the longitudinal displacement mechanisms 5 are fixed to the base 1 through support frames. A transverse displacement mechanism 6 is installed between the two longitudinal displacement mechanisms 5. Threaded rods 29 are rotatably installed inside the longitudinal displacement mechanism 5 and the transverse displacement mechanism 6. Sliding blocks 30 are installed on the outside of the threaded rods 29. The inner screw holes of the sliding blocks 30 are matched with the outer threads of the threaded rods 29. The sliding blocks 30 in the longitudinal displacement mechanism 5 are fixed to the side of the transverse displacement mechanism 6. The sliding blocks 30 in the transverse displacement mechanism 6 are fixed to the upper end of the first electric push rod 8.

[0044] By setting the longitudinal displacement mechanism 5 and the transverse displacement mechanism 6, the design realizes the precise displacement control of the detection mechanism 7 (including the first electric push rod 8 and the detection needle 11, etc.) in the X-axis (longitudinal) and Y-axis (transverse) directions. This allows the detection device to cover any position on the resistance substrate for comprehensive and detailed detection.

[0045] Please refer to Figure 1 and Figure 6 , an air outlet grille 31 is arranged on the rear shell of the shell 2. A temperature control cavity 33 is arranged on one side of the inside of the base 1. A conveying pipe is arranged between the temperature control cavity 33 and the air duct at the rear end of the air outlet grille 31. A fan is installed on the outside of the conveying pipe. The temperature control cavity 33 includes a medium temperature adjusting mechanism, which is composed of a first heat exchanger 34, a second heat exchanger 35, a compressor 36, an expansion valve, and a four-way reversing valve. The first heat exchanger 34 is installed inside the temperature control cavity 33. The second heat exchanger 35 is arranged in the cavity below the temperature control cavity 33. The compressor 36 is arranged on one side of the second heat exchanger 35. The first heat exchanger 34, the second heat exchanger 35, the compressor 36, the expansion valve, and the four-way reversing valve are connected by a medium conveying pipe.

[0046] Please refer to Figure 7The two sides of the inner cavity of the distance adjusting mechanism 10 are provided with air cylinders 37, one end of the air cylinder 37 is fixedly provided with a sliding rod 38, the sliding rod 38 is slidably connected with the rod body at the upper end of the detection needle 11, one end of the sliding rod 38 located outside the distance adjusting mechanism 10 is provided with a third spring 39, and the two ends of the third spring 39 are fixedly connected with the distance adjusting mechanism 10 and the rod body at the upper end of the detection needle 11 respectively;

[0047] Not only can the detection environment be quickly heated and cooled in a very short time, but also the resistance substrate can be accurately detected under stable temperature conditions, improving the accuracy and efficiency of detection, and providing strong technical support for performance testing of the resistance substrate under different temperature conditions.

[0048] The detection method of the resistance substrate detection device comprises the following steps:

[0049] Step one, the staff first opens the cabinet door 3 of the detection device, places the resistance substrate to be detected in the middle position of the detection table 4, ensures that the resistance substrate is stably placed, and then closes the cabinet door 3 to create a relatively sealed environment for the next detection step;

[0050] Step two, start the servo motor 26, the output shaft drives the gear 27 to rotate, the gear 27 is engaged with the tooth ring 25 at the bottom of the chuck 18, drives the chuck 18 to rotate, at the same time, the limiting screw at the upper end of the claw 19 is engaged with the plane screw thread on the contact end surface of the chuck 18, when the plane screw thread rotates, it drives the claw 19 to move along the direction of the guide groove 12, and the claw 19 moves to the side surface of the resistance substrate to clamp and fix it;

[0051] Step three, start the motor at one end of the longitudinal displacement mechanism 5, the output shaft drives the threaded rod 29 to rotate, and through the cooperation with the sliding block 30, the rotary motion is converted into linear motion, which drives the horizontal displacement mechanism 6 to adjust longitudinally, and in the same way, through the cooperation of the threaded rod 29 and the sliding block 30 in the horizontal displacement mechanism 6, the horizontal movement of the detection mechanism 7 is realized, until the detection mechanism 7 is aligned with the detection point of the resistance substrate, according to the requirement of the detection point, the motor in the rotary adjusting seat 9 is started to adjust the angle of the detection needle 11, then the distance between the detection needle 11 is fine adjusted through the air cylinder 37 in the distance adjusting mechanism 10; the detection needle 11 is lowered by the first electric push rod 8 to make it contact with the detection point position of the resistance substrate, and the controller 32 is used to detect the resistance value of the resistance substrate and record the data;

[0052] Step four, low temperature detection: start the compressor 36, the refrigerant becomes high pressure gas through the compressor 36, becomes high pressure liquid through the second heat exchanger 35 condensation heat release, becomes low temperature low pressure liquid through the throttling device, evaporates through the first heat exchanger 34 to become low temperature low pressure gas, absorbs heat to the air in the temperature control cavity 33, and the cold air is transported to the cavity at the rear end of the shell 2 through the fan, and then the space in the shell 2 is cooled through the air outlet grille 31, so that the detection requirement of the resistance value in the low temperature environment is reached;

[0053] Step five, high temperature detection: change the flow direction of the refrigerant through the four-way reversing valve, the refrigerant first becomes high pressure gas through the compressor 36, then becomes high pressure liquid through the first heat exchanger 34 condensation heat release, heats the air in the temperature control cavity 33, and reaches the detection requirement of the resistance value in the high temperature environment;

[0054] Step six, bending detection: start the second electric push rod 20, drive the mounting seat 21 to rise, make the top plate 22 contact with the resistance substrate, with the continuous lifting of the second electric push rod 20, the resistance substrate is blocked by the movable rod 17 of the positioning mechanism 13 on both sides, forming a bending state, and the resistance value is detected in this state;

[0055] Step seven, vibration detection: use the second electric push rod 20 to lift the resistance substrate away from the upper end surface of the detection table 4, start the motor 23, the eccentric counterweight wheels 28 at both ends of the motor 23 rotate at high speed, generate high frequency vibration, and the vibration force is transmitted to the resistance substrate through the top plate 22 to realize high frequency vibration; the detection needle 11 is movably connected with the sliding rod 38 and the third spring 39, so that the detection needle 11 is always in contact with the bottom surface of the resistance substrate;

[0056] Step eight, after all the detection steps are completed, all the motors and detection devices are turned off, the cabinet door 3 is opened, the detected resistance substrate is taken out, and subsequent processing or recording of the detection results is performed.

[0057] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A resistive substrate testing device, comprising a base (1), characterized in that: A housing (2) is installed on one side of the upper end of the base (1). A testing platform (4) is provided inside the housing (2), and the testing platform (4) is embedded in the interior of the base (1). Guide grooves (12) are provided at the front and back of the upper surface of the testing platform (4). A positioning mechanism (13) is provided inside the guide groove (12). The positioning mechanism (13) includes a fixed rod (15), and the fixed rod (15) slides and limits with the guide groove (12). A movable rod (17) is slidably installed inside the fixed rod (15). The movable rod (17) extends to the upper end of the testing platform (4), and a bent crossbar is provided at the top of the movable rod (17). A first spring (16) is installed between the inner cavity of the 15) and the movable rod (17). A longitudinal displacement mechanism (5) is provided on both sides of the detection platform (4), and the longitudinal displacement mechanism (5) is fixed to the base (1) by a support frame. A transverse displacement mechanism (6) is installed between the two longitudinal displacement mechanisms (5). A detection mechanism (7) is provided below the transverse displacement mechanism (6). The detection mechanism (7) includes a first electric push rod (8). A rotary adjustment seat (9) is installed on the movable end of the first electric push rod (8). A spacing adjustment mechanism (10) is rotatably installed below the rotary adjustment seat (9), and the rotary adjustment seat (9) has a built-in motor. The output shaft is fixed to the spacing adjustment mechanism (10). Detection pins (11) are symmetrically arranged on both sides below the spacing adjustment mechanism (10). The spacing adjustment mechanism (10) can adjust the spacing between the two detection pins (11) as needed. A chuck (18) is installed inside the detection table (4). Claws (19) are installed on both sides of the upper end face of the chuck (18). The limiting thread on the lower end face of the claw (19) meshes with the planar thread on the contact end face of the chuck (18). The upper end face of the claw (19) is fixed to the fixing rod (15) by screws. A servo motor (26) is installed on one side of the lower end inside the detection table (4). A gear (27) is installed on the output shaft of the motor (26), and a gear ring (25) is provided at the lower end of the outer wall of the chuck (18), and the gear ring (25) meshes with the gear (27); a through hole (14) is provided at the middle position of the detection table (4), and the through hole (14) passes through the chuck (18). A second electric push rod (20) is fixedly installed at the bottom of the through hole (14), and a mounting base (21) is fixedly installed at the movable end of the second electric push rod (20). A vibration mechanism is provided inside the mounting base (21), and a top plate (22) is provided above the vibration mechanism, and the top plate (22) is flush with the upper surface of the detection table (4);An air outlet grille (31) is provided on the rear shell of the outer casing (2). A temperature control chamber (33) is provided on one side inside the base (1). A conveying pipe is provided between the temperature control chamber (33) and the air duct at the rear end of the air outlet grille (31). A fan is installed on the outside of the conveying pipe. The temperature control chamber (33) includes a medium temperature regulating mechanism, which consists of a first heat exchanger (34), a second heat exchanger (35), a compressor (36), an expansion valve, and a four-way reversing valve. The first heat exchanger (34) is installed inside the temperature control chamber (33). The second heat exchanger (35) is located in the cavity below the temperature control chamber (33). The compressor (36) is located on one side of the second heat exchanger (35). A medium conveying pipe connects the first heat exchanger (34), the second heat exchanger (35), the compressor (36), the expansion valve, and the four-way reversing valve.

2. The resistive substrate detection device according to claim 1, characterized in that: The vibration mechanism includes a motor (23), and eccentric counterweight wheels (28) are fixedly installed on the output shafts at both ends of the motor (23). A second spring (24) is installed between the lower end of the motor (23) housing and the mounting base (21), and the upper end of the motor (23) housing is fixed to the top plate (22).

3. The resistive substrate detection device according to claim 2, characterized in that: Both the longitudinal displacement mechanism (5) and the transverse displacement mechanism (6) have a threaded rod (29) rotatably mounted inside. A sliding block (30) is mounted on the outside of the threaded rod (29), and the inner thread of the sliding block (30) is adapted to the outer thread of the threaded rod (29). The sliding block (30) in the longitudinal displacement mechanism (5) is fixed to the side of the transverse displacement mechanism (6), and the sliding block (30) in the transverse displacement mechanism (6) is fixed to the upper end of the first electric push rod (8).

4. The resistive substrate detection device according to claim 3, characterized in that: Cylinders (37) are installed on both sides of the inner cavity of the spacing adjustment mechanism (10). A sliding rod (38) is fixedly installed at one end of the cylinder (37), and the sliding rod (38) is slidably connected to the rod at the upper end of the detection needle (11). A third spring (39) is provided at one end of the sliding rod (38) outside the spacing adjustment mechanism (10), and the two ends of the third spring (39) are fixed to the spacing adjustment mechanism (10) and the rod at the upper end of the detection needle (11), respectively.

5. The resistive substrate detection device according to claim 4, characterized in that: The front end of the outer shell (2) is equipped with a cabinet door (3), and the cabinet door (3) is connected to the outer shell (2) by a hinge. A controller (32) is provided on the other side of the upper surface of the base (1).

6. The detection method based on the resistive substrate detection device according to claim 5, characterized in that: Includes the following steps: Step 1: The staff first opens the cabinet door (3) of the testing device, places the resistor substrate to be tested in the middle of the testing table (4), and closes the cabinet door (3) after ensuring that the resistor substrate is placed stably to create a relatively sealed environment for the next testing steps. Step 2: Start the servo motor (26), whose output shaft drives the gear (27) to rotate. The gear (27) meshes with the gear ring (25) at the bottom of the chuck (18), driving the chuck (18) to rotate. At the same time, the limiting thread at the upper end of the chuck (19) meshes with the planar thread on the contact end face of the chuck (18). When the planar thread rotates, it drives the chuck (19) to move along the direction of the guide groove (12). The chuck (19) moves to the side of the resistor substrate and clamps and fixes it. Step 3: Start the motor at one end of the longitudinal displacement mechanism (5). The output shaft drives the threaded rod (29) to rotate. Through the cooperation with the sliding block (30), the rotational motion is converted into linear motion, which drives the transverse displacement mechanism (6) to make longitudinal adjustments. Similarly, through the cooperation of the threaded rod (29) and the sliding block (30) inside the transverse displacement mechanism (6), the detection mechanism (7) is moved laterally until the detection mechanism (7) is aligned with the detection point of the resistor substrate. According to the detection point requirements, turn on the motor inside the rotary adjustment seat (9) to adjust the angle of the detection needle (11). Then, the cylinder (37) inside the spacing adjustment mechanism (10) is used to fine-tune the spacing of the detection needle (11). The first electric push rod (8) drives the detection needle (11) to descend so that it is in contact with the detection point of the resistor substrate. With the cooperation of the controller (32), the resistance value of the resistor substrate is detected and the data is recorded. Step 4, Low temperature detection: Turn on the compressor (36), the refrigerant becomes high pressure gas through the compressor (36), condenses and releases heat through the second heat exchanger (35) to become high pressure liquid, the high pressure liquid becomes low temperature and low pressure liquid through the throttling device, evaporates and absorbs heat through the first heat exchanger (34) to become low temperature and low pressure gas, absorbs heat from the air in the temperature control chamber (33), and the cold air is delivered to the cavity at the rear end of the outer shell (2) by the fan, and then the space inside the outer shell (2) is cooled by the air outlet grille (31) to meet the requirements for detecting the resistance value in the low temperature environment; Step 5, High Temperature Detection: The flow direction of the refrigerant is changed by the four-way reversing valve. The refrigerant first passes through the compressor (36) to become a high-pressure gas, and then passes through the first heat exchanger (34) to condense and release heat to become a high-pressure liquid, which heats the air inside the temperature control chamber (33) to meet the requirements for detecting the resistance value in a high-temperature environment. Step 6, Bending detection: Turn on the second electric push rod (20) to drive the mounting base (21) to rise, so that the top plate (22) contacts the resistor substrate. As the second electric push rod (20) continues to rise, the two sides of the resistor substrate are blocked by the movable rod (17) of the positioning mechanism (13), forming a bending state. The resistance value is detected in this state. Step 7, Vibration detection: The second electric push rod (20) is used to lift the resistor substrate away from the upper surface of the detection table (4), and the motor (23) is turned on. The eccentric counterweight wheels (28) at both ends of the motor (23) rotate at high speed, generating high-frequency vibration. The vibration force is transmitted to the resistor substrate through the top plate (22) to realize high-frequency vibration. The detection needle (11) is in contact with the bottom surface of the resistor substrate through the sliding rod (38) and the third spring (39). Step 8: After all testing steps are completed, turn off all motors and testing equipment, open the cabinet door (3), take out the tested resistor substrate, and perform subsequent processing or record the test results.

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