Resistance substrate detection device and detection method thereof

Abstract

The invention discloses a resistor substrate detection device and a detection method thereof, and relates to the technical field of resistor substrate detection.The resistor substrate detection device comprises a base, a shell is installed on one side of the upper end of the base, a detection table is arranged in the shell and embedded into the base, and guide grooves are formed in the front portion and the rear portion of the upper end face of the detection table; a positioning mechanism is arranged in the guide groove, the positioning mechanism comprises a fixed rod, a movable rod is slidably mounted in the fixed rod, a first spring is mounted between an inner cavity of the fixed rod and the movable rod, and longitudinal displacement mechanisms are arranged on the two sides of the detection table; a transverse displacement mechanism is installed between the two longitudinal displacement mechanisms, and a detection mechanism is arranged below the transverse displacement mechanism. The problems that the detection mode of the detection device is single, the use direction of the resistor substrate cannot be accurately positioned, and targeted improvement cannot be carried out according to the existing defects affecting the resistance value are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of resistor substrate detection, and in particular to a resistor substrate detection device and a detection method thereof. Background Art

[0002] The resistor substrate detection device is an automated testing device designed to meet the modern electronic manufacturing industry's demand for high-precision and high-efficiency detection of resistor components. The device integrates advanced sensing technology, precise measurement circuits, and efficient data processing algorithms to achieve fast and accurate measurement of each resistor value on the resistor substrate, while detecting the soldering quality, position deviation, and potential defects of the resistor, ensuring the stability and reliability of the resistor substrate in electronic products, thereby improving the overall product quality and production efficiency.

[0003] For example, the Chinese authorized patent "A resistor substrate testing device" with announcement number CN206832950U includes a test box, in which a probe assembly and a test circuit are arranged; a resistor substrate mounting seat, which is arranged on one side surface of the test box, and a plurality of detection holes are arranged on the resistor substrate mounting seat according to preset rules, so that the probes in the probe assembly can extend from the detection holes and contact the resistor substrate mounted on the resistor substrate mounting seat, so that the test circuit can test the resistance of the probe contact position on the resistor substrate; a display device, which is used to display the test results; and a control device, which is used to control the operation of the probe assembly and the test circuit.

[0004] Although the above-mentioned existing technology can realize the detection of resistor substrates, the detection method is relatively single and does not take into account the changes in the resistance value of the resistor substrate in different environments, so it is impossible to accurately locate the use direction of the resistor substrate. At the same time, it is impossible to make targeted improvements based on the defects that affect the resistance value. Therefore, it does not meet the existing needs. In this regard, we propose a resistor substrate detection device and a detection method. Summary of the invention

[0005] The purpose of the present invention is to provide a resistor substrate detection device and a detection method thereof to solve the problem that the detection method of the detection device proposed in the above background technology is relatively single and cannot accurately locate the use direction of the resistor substrate and cannot make targeted improvements based on defects that affect the resistance value.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a resistor substrate detection device and a detection method thereof, comprising a base, a shell is installed on one side of the upper end of the base, a detection platform is arranged inside the shell, and the detection platform is embedded in the base, guide grooves are arranged at the front and rear of the upper end surface of the detection platform, a positioning mechanism is arranged inside the guide groove, the positioning mechanism comprises a fixed rod, and the fixed rod and the positioning mechanism are slidably limited, a movable rod is slidably installed inside the fixed rod, the movable rod extends to the upper end of the detection platform, and a bent cross bar is arranged at the top of the movable rod, a first spring is installed between the inner cavity of the fixed rod and the movable rod, longitudinal displacement mechanisms are arranged on both sides of the detection platform, and the longitudinal displacement mechanisms are fixed to the base through a support frame, a transverse displacement mechanism is installed between the two longitudinal displacement mechanisms, and a detection mechanism is arranged below the transverse displacement mechanism.

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

[0008] Preferably, a chuck is installed inside the detection platform, and claws are installed on both sides of the upper end surface of the chuck, the limiting thread on the lower end surface of the claw is meshed with the plane thread on the contact end surface of the chuck, and the upper end surface of the claw is fixed to the fixing rod by screws, and a servo motor is installed on one side of the lower end of the detection platform, and a gear is installed on the output shaft of the servo motor, and a gear ring is provided at the lower end of the outer wall of the chuck, and the gear ring is meshed and connected with the gear.

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

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

[0011] Preferably, threaded rods are rotatably installed inside the longitudinal displacement mechanism and the transverse displacement mechanism, sliding blocks are installed outside the threaded rods, and the internal threaded holes of the sliding blocks are adapted to the external threads of the threaded rods, the sliding blocks in the longitudinal displacement mechanism 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, an air outlet grille is provided on the rear shell of the shell, a temperature control chamber is provided on one side of the interior of the base, and a delivery pipe is provided between the temperature control chamber and the air duct at the rear end of the air outlet grille, a fan is installed on the outside of the delivery pipe, the temperature control chamber includes a medium temperature control mechanism, the medium temperature control 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 chamber, the second heat exchanger is arranged in a cavity below the temperature control chamber, 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 delivery pipe.

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

[0014] Preferably, a cabinet door is installed at the front end of the shell, and the cabinet door is connected to the shell by a hinge, and a controller is arranged on the other side of the upper end surface of the base.

[0015] A detection method for a resistor substrate detection device comprises the following steps: Step 1: The staff first opens the door of the testing device, places the resistor substrate to be tested in the middle of the testing table, ensures that the resistor substrate is stably placed, and then closes the door to create a relatively sealed environment for the next testing steps; Step 2: Start the servo motor, and its output shaft drives the gear to rotate. The gear meshes with the gear ring at the bottom of the chuck, driving the chuck to rotate. At the same time, the limit thread on the upper end of the claw meshes with the plane thread on the contact end face of the chuck. When the plane thread rotates, the claw moves along the guide groove, and the claw moves to the side of the resistor substrate to clamp and fix it. Step 3: Start the motor at one end of the longitudinal displacement mechanism, and the output shaft drives the threaded rod to rotate. By cooperating with the sliding block, the rotational motion is converted into linear motion, driving the lateral displacement mechanism to perform longitudinal adjustment. Similarly, the threaded rod and the sliding block inside the lateral displacement mechanism cooperate to achieve lateral movement of the detection mechanism until the detection mechanism is aligned with the detection point of the resistor substrate. According to the detection point requirements, start the motor inside the rotary adjustment seat to adjust the angle of the detection needle. Subsequently, the spacing of the detection needle is fine-tuned through the cylinder inside the spacing adjustment mechanism; the detection needle is driven down by the first electric push rod to connect with the detection point position of the resistor substrate, and the resistance value of the resistor substrate is detected in cooperation with the controller, and the data is recorded; Step 4, low temperature detection: turn on 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 passes through the throttling device to become low-temperature and low-pressure liquid, evaporates and absorbs heat through the first heat exchanger to become low-temperature and low-pressure gas, absorbs heat from the air in the temperature control cavity, and transports the cold air to the cavity at the rear end of the shell through the fan, and then cools the space inside the shell through the air outlet grille to meet the detection requirements of 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 to become a high-pressure gas, and then passes through the first heat exchanger to condense and release heat to become a high-pressure liquid, heating the air inside the temperature control chamber to meet the resistance value detection requirements of the high temperature environment; Step 6: Bending detection: Turn on the second electric push rod to drive the mounting seat to rise, so that the top plate contacts the resistor substrate. As the second electric push rod continues to rise, the two sides of the resistor substrate are blocked by the movable rods of the positioning mechanism to form a bending state. In this state, the resistance value is detected; Step 7: Vibration detection: Use the second electric push rod to lift the resistor substrate away from the upper surface of the detection table, turn on the motor, and the eccentric weight wheels at both ends of the motor rotate at high speed to generate high-frequency vibration. The vibration force is transmitted to the resistor substrate through the top plate to achieve high-frequency vibration; the detection needle is ensured to always contact the bottom surface of the resistor substrate through the sliding rod and the third spring; Step 8. After all the test steps are completed, turn off all motors and test equipment, open the cabinet door, take out the tested resistor substrate, and perform subsequent processing or record the test results.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention adopts an automated detection mechanism, which significantly improves the efficiency and accuracy of resistor substrate detection. The staff only needs to operate simply, open the cabinet door and place the resistor substrate in the center of the detection table, and then start the servo motor to drive the gear to rotate, and achieve smooth rotation of the chuck through precise meshing with the toothed ring at the bottom of the chuck. In this process, the claw moves accurately along the guide groove under the guidance of the plane thread, firmly clamps the resistor substrate, and ensures the position stability during the detection process. Further, through the motor drive of the longitudinal and lateral displacement mechanism, the rotational motion of the threaded rod is cleverly converted into the linear motion of the detection mechanism, and the precise positioning of the detection mechanism in three-dimensional space is achieved. In addition, the motor in the rotary adjustment seat can flexibly adjust the angle of the detection needle, and the spacing adjustment mechanism accurately controls the spacing between the detection needles through the cylinder. Finally, the first electric push rod drives the detection needle to descend and closely contact the detection point of the resistor substrate. This series of automated and refined adjustment mechanisms, combined with the intelligent control of the controller, not only greatly improves the detection efficiency, but also ensures the accuracy and reliability of resistance value detection, and provides strong technical support for the quality control of resistor substrates in the electronics manufacturing industry.

[0017] 2. The present invention creates a highly controllable and relatively sealed environment for the detection of the resistor substrate by integrating a temperature detection mechanism and combining the outer shell with the cabinet door structure. When the resistor substrate needs to be detected under low temperature conditions, the system starts the compressor to make the refrigerant undergo a phase change process from high-pressure gas to high-pressure liquid, and then converted into a low-temperature and low-pressure liquid through a throttling device. Subsequently, in the first heat exchanger, the refrigerant evaporates and absorbs heat, effectively reducing the air temperature in the temperature control cavity. With the help of the strong action of the negative pressure fan, the cold air is quickly transported to the rear end cavity of the shell, and evenly distributed to the entire detection space through the air outlet grille, so as to quickly and accurately achieve the required low-temperature detection conditions. Similarly, under the requirement of high-temperature detection, the refrigerant flow direction is changed by switching 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 and is converted into a high-pressure liquid. This process effectively releases heat energy and heats the air in the temperature control cavity. In this way, the space in the shell can be quickly heated to the temperature required for high-temperature detection of the resistor substrate. Through the precise temperature control mechanism, not only can the rapid heating and cooling of the detection environment be achieved in a very short time, but also the resistor substrate can be accurately detected under stable temperature conditions, which improves the accuracy and efficiency of the detection, and provides strong technical support for the performance testing of the resistor substrate under different temperature conditions, meeting the diverse needs of electronic product research and development, production and quality control.

[0018] 3. The present invention is provided with a mechanical property detection mechanism, which can detect the resistance value of the resistor substrate in a bent state and a vibrating state. When bending, the second electric push rod is turned on to drive the mounting seat to rise, so that the top plate inside the mounting seat is connected to the resistor bottom plate, thereby driving the resistor substrate to rise. When the two sides of the resistor substrate are blocked by the movable rod of the positioning mechanism, the resistor substrate is bent as the second electric push rod is lifted, so that the resistance value is detected in this state. When vibration detection is performed, the second electric push rod is also used to lift the resistor substrate. After leaving the upper end surface of the detection table, the motor is turned on, and the eccentric counterweight wheels at both ends of the motor rotate at high speed, thereby realizing high-frequency vibration of the body. The vibration force is transmitted to the resistor substrate through the top plate, thereby realizing high-frequency vibration of the resistor substrate. Since the detection needle is in contact with the bottom surface of the resistor substrate through the sliding rod and the third spring, the detection needle is always in contact with the bottom surface of the resistor substrate, thereby ensuring that the resistor substrate can still ensure the stability of resistance value detection even in a vibrating state. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall stereogram of the present invention; Figure 2 A three-dimensional diagram of the internal structure of the housing of the present invention; Figure 3It is a schematic diagram of the internal structure of the detection platform of the present invention; Figure 4 A three-dimensional diagram of the chuck and mechanical property testing mechanism of the present invention; Figure 5 It is a schematic diagram of the transmission structure of the longitudinal displacement mechanism and the transverse displacement mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the thermal stability detection mechanism of the present invention; Figure 7 It is a schematic diagram of the internal structure of the spacing adjustment mechanism of the present invention.

[0020] In the figure: 1, base; 2, shell; 3, cabinet door; 4, testing table; 5, longitudinal displacement mechanism; 6, lateral displacement mechanism; 7, testing mechanism; 8, first electric push rod; 9, rotation adjustment seat; 10, spacing adjustment mechanism; 11, testing needle; 12, guide groove; 13, positioning mechanism; 14, through hole; 15, fixing rod; 16, first spring; 17, movable rod; 18, chuck; 19, claw; 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 counterweight wheel; 29, threaded rod; 30, sliding block; 31, air outlet grille; 32, controller; 33, temperature control chamber; 34, first heat exchanger; 35, second heat exchanger; 36, compressor; 37, cylinder; 38, sliding rod; 39, third spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] See also Figure 1-7An embodiment of the present invention provides 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 at the front end of the shell 2, and the cabinet door 3 is connected to 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 platform 4 is arranged inside the shell 2, and the detection platform 4 is embedded in the base 1, and a guide groove 12 is arranged at the front and rear of the upper end surface of the detection platform 4, and a positioning mechanism 13 is arranged inside the guide groove 12, and the positioning mechanism 13 includes a fixed rod 15, and the fixed rod 15 and the positioning mechanism 13 are slidably limited, and a movable rod 17 is slidably installed inside the fixed rod 15, and the movable rod 17 is slidably installed inside the movable rod 17. The movable rod 17 extends to the upper end of the detection platform 4, and a bent cross bar is provided at the top 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 inside the detection platform 4. Claws 19 are installed on both sides of the upper end surface of the chuck 18. The limiting threads on the lower end surface of the claws 19 are meshed with the plane threads on the contact end surface of the chuck 18, and the upper end surface of the claws 19 is fixed to the fixed rod 15 by screws. A servo motor 26 is installed on one side of the lower end of the detection platform 4. A gear 27 is installed on the output shaft of the servo motor 26. A gear ring 25 is provided at the lower end of the outer wall of the chuck 18, and the gear ring 25 is meshed and connected with the gear 27. The design of the chuck 18 and the claw 19 realizes the stable clamping and fixing of the resistor substrate through the meshing of the gear 27 driven by the servo motor 26 and the gear ring 25. This clamping method is not only easy to operate, but also has a uniform clamping force, which effectively prevents the resistor substrate from moving or shaking during the detection process, and improves the accuracy and reliability of the detection.

[0023] See also Figure 1 and Figure 2 A detection mechanism 7 is provided below the lateral displacement mechanism 6, and the detection mechanism 7 includes a first electric push rod 8, a rotating adjustment seat 9 is installed at the movable end of the first electric push rod 8, a spacing adjustment mechanism 10 is rotatably installed below the rotating adjustment seat 9, and the output shaft of the motor built in the rotating adjustment seat 9 is fixed to the spacing adjustment mechanism 10, and detection needles 11 are symmetrically provided on both sides below the spacing adjustment mechanism 10; Through the combination of the lateral displacement mechanism 6 and the detection mechanism 7, accurate detection of any position on the resistor substrate can be achieved. The first electric push rod 8 can drive the detection mechanism 7 to perform fine displacement control in the vertical direction, ensuring that the detection needle 11 can be accurately aligned with the detection point on the resistor substrate. The design of the rotary adjustment seat 9 allows the angle of the detection needle 11 to be flexibly adjusted according to actual needs. This is especially important for detecting detection points in different directions or inclination angles on the resistor substrate, ensuring the comprehensiveness and accuracy of the detection. The spacing adjustment mechanism 10 can adjust the spacing between the two detection needles 11 as needed, which enables the detection device to adapt to the detection needs of resistor substrates of different sizes and specifications. This design enhances the versatility and flexibility of the detection device.

[0024] See also Figure 3 and Figure 4 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 seat 21 is fixedly installed at the movable end of the second electric push rod 20. A vibration mechanism is provided inside the mounting seat 21, and a top plate 22 is provided above the vibration mechanism, and the top plate 22 is flush with the upper end surface of the detection table 4. The vibration mechanism includes a motor 23, and eccentric weight 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 seat 21, and the upper end of the motor 23 housing is fixed to the top plate 22; This design not only realizes the basic detection of the resistor substrate, but also adds a vibration test function. This is crucial for evaluating the performance and stability of the resistor substrate in a vibration environment, and helps to discover potential connection problems or structural weaknesses. The combination of the motor 23 and the eccentric counterweight wheel 28 constitutes an efficient vibration source. When the motor is started, the eccentric counterweight wheel generates centrifugal force, causing the entire vibration mechanism to produce periodic vibrations. This design can produce stable and adjustable vibration frequencies and amplitudes to meet different testing requirements. The setting of the second spring 24 plays a role in shock absorption and buffering, protecting the motor 23 and the entire vibration mechanism from damage caused by excessive vibration forces. At the same time, it also ensures that the vibration can be smoothly transmitted to the resistor substrate without generating excessive noise or vibration interference.

[0025] See also Figure 2 and Figure 5, longitudinal displacement mechanisms 5 are provided on both sides of the detection platform 4, and the longitudinal displacement mechanisms 5 are fixed to the base 1 through a support frame, and a transverse displacement mechanism 6 is installed between the two longitudinal displacement mechanisms 5, and threaded rods 29 are rotatably installed inside the longitudinal displacement mechanisms 5 and the transverse displacement mechanisms 6, and sliding blocks 30 are installed outside the threaded rods 29, and the inner screw holes of the sliding blocks 30 are adapted to the outer threads of the threaded rods 29, the sliding blocks 30 in the longitudinal displacement mechanisms 5 are fixed to the side surfaces of the transverse displacement mechanisms 6, and the sliding blocks 30 in the transverse displacement mechanisms 6 are fixed to the upper end of the first electric push rod 8; By setting up 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 enables the detection device to cover any position on the resistor substrate and perform comprehensive and detailed detection.

[0026] See also Figure 1 and Figure 6 An air outlet grille 31 is provided on the rear shell of the shell 2, a temperature control chamber 33 is provided on one side of the interior of the base 1, and a delivery 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 outside the delivery pipe, the temperature control chamber 33 includes a medium temperature control mechanism, the medium temperature control mechanism 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 arranged in the cavity below the temperature control chamber 33, the compressor 36 is arranged on one side of the second heat exchanger 35, and 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 delivery pipe.

[0027] See also Figure 7 , 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 with the rod body at the upper end of the detection needle 11, and a third spring 39 is provided at one end of the sliding rod 38 located outside the spacing adjustment mechanism 10, and the two ends of the third spring 39 are respectively fixed to the spacing adjustment mechanism 10 and the rod body at the upper end of the detection needle 11; It can not only achieve rapid temperature rise and fall of the detection environment in a very short time, but also ensure accurate detection of the resistor substrate under stable temperature conditions, thus improving the accuracy and efficiency of detection and providing strong technical support for the performance testing of the resistor substrate under different temperature conditions.

[0028] A detection method for a resistor substrate detection device comprises 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, ensures that the resistor substrate is stably placed, and then closes the cabinet door 3 to create a relatively sealed environment for the next testing step; Step 2, start the servo motor 26, and its output shaft drives the gear 27 to rotate. The gear 27 meshes with the toothed ring 25 at the bottom of the chuck 18, driving the chuck 18 to rotate. At the same time, the limiting thread on the upper end of the claw 19 meshes with the plane thread on the contact end face of the chuck 18. When the plane thread rotates, the claw 19 is driven to move along the direction of the guide groove 12, and the claw 19 moves to the side of the resistor substrate to clamp and fix 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, and through the cooperation with the sliding block 30, the rotational motion is converted into linear motion, driving the lateral displacement mechanism 6 to perform longitudinal adjustment. Similarly, through the cooperation of the threaded rod 29 and the sliding block 30 inside the lateral displacement mechanism 6, the lateral movement of the detection mechanism 7 is realized until the detection mechanism 7 is aligned with the detection point of the resistor substrate. According to the detection point requirements, the motor inside the rotary adjustment seat 9 is turned on to adjust the angle of the detection needle 11. Subsequently, the spacing of the detection needle 11 is fine-tuned through the cylinder 37 inside the spacing adjustment mechanism 10; the detection needle 11 is driven down by the first electric push rod 8 to connect with the detection point position of the resistor substrate, and the resistance value of the resistor substrate is detected in cooperation with the controller 32, 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, and condenses and releases heat through the second heat exchanger 35 to become high-pressure liquid. The high-pressure liquid passes through the throttling device to become low-temperature and low-pressure liquid, and evaporates and absorbs heat through the first heat exchanger 34 to become low-temperature and low-pressure gas, absorbing heat from the air in the temperature control chamber 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 inside the shell 2 is cooled through the air outlet grille 31 to meet the detection requirements of 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, heating the air inside the temperature control chamber 33 to meet the detection requirements of the resistance value in the high temperature environment; Step 6: Bending detection: Turn on the second electric push rod 20 to drive the mounting seat 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, and the resistance value is detected in this state; Step 7, vibration detection: Use the second electric push rod 20 to lift the resistor substrate away from the upper end surface of the detection table 4, turn on the motor 23, and the eccentric weight wheels 28 at both ends of the motor 23 rotate at high speed to generate high-frequency vibration. The vibration force is transmitted to the resistor substrate through the top plate 22 to achieve high-frequency vibration; the detection needle 11 is movably coordinated with the sliding rod 38 and the third spring 39 to ensure that it is always in contact with the bottom surface of the resistor substrate; Step 8: After all the 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.

[0029] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A resistance substrate detection device, comprising a base (1), characterized in that: A shell (2) is installed on one side of the upper end of the base (1); a detection platform (4) is arranged inside the shell (2), and the detection platform (4) is embedded in the base (1); guide grooves (12) are arranged at the front and rear of the upper end surface of the detection platform (4); a positioning mechanism (13) is arranged inside the guide groove (12); the positioning mechanism (13) comprises a fixing rod (15), and the fixing rod (15) and the positioning mechanism (13) are slidably limited; a movable rod (17) is slidably installed inside the fixing rod (15); The movable rod (17) extends to the upper end of the detection platform (4), and a bent cross bar is provided 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). Longitudinal displacement mechanisms (5) are provided on both sides of the detection platform (4), and the longitudinal displacement mechanisms (5) are fixed to the base (1) through a support frame. A transverse displacement mechanism (6) is installed between the two longitudinal displacement mechanisms (5), and a detection mechanism (7) is provided below the transverse displacement mechanism (6).

2. A resistance substrate detection device according to claim 1, characterized in that: The detection mechanism (7) comprises a first electric push rod (8), a rotating adjustment seat (9) being mounted on the movable end of the first electric push rod (8), a spacing adjustment mechanism (10) being rotatably mounted below the rotating adjustment seat (9), an output shaft of a motor built into the rotating adjustment seat (9) being fixed to the spacing adjustment mechanism (10), and detection needles (11) being symmetrically arranged on both sides below the spacing adjustment mechanism (10).

3. A resistance substrate detection device according to claim 2, characterized in that: A chuck (18) is installed inside the detection platform (4), and claws (19) are installed on both sides of the upper end surface of the chuck (18), and the limiting threads on the lower end surfaces of the claws (19) are meshed with the plane threads on the contact end surface of the chuck (18), and the upper end surface of the claws (19) is fixed to the fixing rod (15) by means of screws. A servo motor (26) is installed on one side of the lower end of the detection platform (4), and a gear (27) is installed on the output shaft of the servo motor (26). A gear ring (25) is provided at the lower end of the outer wall of the chuck (18), and the gear ring (25) is meshedly connected with the gear (27).

4. A resistance substrate detection device according to claim 3, characterized in that: A through hole (14) is provided at the middle position of the detection platform (4), and the through hole (14) passes through the chuck (18); a second electric push rod (20) is fixedly mounted at the bottom of the through hole (14); a mounting seat (21) is fixedly mounted at the movable end of the second electric push rod (20); a vibration mechanism is provided inside the mounting seat (21); a top plate (22) is provided above the vibration mechanism, and the top plate (22) is flush with the upper end surface of the detection platform (4).

5. A resistance substrate detection device according to claim 4, characterized in that: The vibration mechanism comprises a motor (23), and eccentric weight wheels (28) are fixedly mounted on output shafts at both ends of the motor (23). A second spring (24) is mounted between the lower end of the motor (23) housing and the mounting seat (21), and the upper end of the motor (23) housing is fixed to the top plate (22).

6. A resistance substrate detection device according to claim 5, characterized in that: A threaded rod (29) is rotatably mounted inside the longitudinal displacement mechanism (5) and the transverse displacement mechanism (6); a sliding block (30) is mounted outside the threaded rod (29); an internal threaded hole of the sliding block (30) is matched with an external thread of the threaded rod (29); the sliding block (30) in the longitudinal displacement mechanism (5) is fixed to a side surface of the transverse displacement mechanism (6); and the sliding block (30) in the transverse displacement mechanism (6) is fixed to an upper end of a first electric push rod (8).

7. A resistance substrate detection device according to claim 6, characterized in that: An air outlet grille (31) is provided on the rear shell of the housing (2); a temperature control chamber (33) is provided on one side of the interior of the base (1); a delivery 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 outside the delivery pipe; the temperature control chamber (33) comprises a medium temperature control mechanism, which comprises 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 arranged in a cavity below the temperature control chamber (33); the compressor (36) is arranged on one side of the second heat exchanger (35); and 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 delivery pipe.

8. The resistance substrate detection device according to claim 7, 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 on one end of the cylinder (37), and the sliding rod (38) is slidably connected to a rod body at the upper end of the detection needle (11), and a third spring (39) is provided at one end of the sliding rod (38) located outside the spacing adjustment mechanism (10), and two ends of the third spring (39) are respectively fixed to the spacing adjustment mechanism (10) and the rod body at the upper end of the detection needle (11).

9. A resistance substrate detection device according to claim 8, characterized in that: A cabinet door (3) is installed at the front end of the housing (2), and the cabinet door (3) is connected to the housing (2) via a hinge. A controller (32) is provided on the other side of the upper end surface of the base (1).

10. The detection method of the resistance substrate detection device according to claim 9, characterized in that: The steps include: Step 1: The staff first opens the cabinet door (3) of the detection device, places the resistor substrate to be detected in the middle position of the detection table (4), ensures that the resistor substrate is stably placed, and then closes the cabinet door (3) to create a relatively sealed environment for the next detection step; Step 2, start the servo motor (26), the output shaft of which drives the gear (27) to rotate, the gear (27) meshes with the toothed ring (25) at the bottom of the chuck (18), and drives the chuck (18) to rotate. At the same time, the limiting thread at the upper end of the clamping claw (19) meshes with the flat thread on the contact end face of the chuck (18), and when the flat thread rotates, the clamping claw (19) is driven to move along the guide groove (12), and the clamping claw (19) moves to the side of the resistor substrate to clamp and fix it; Step 3: Start the motor at one end of the longitudinal displacement mechanism (5), and the output shaft drives the threaded rod (29) to rotate. By cooperating with the sliding block (30), the rotational motion is converted into linear motion, and the lateral displacement mechanism (6) is driven to perform longitudinal adjustment. Similarly, by cooperating with the threaded rod (29) and the sliding block (30) inside the lateral displacement mechanism (6), the lateral movement of the detection mechanism (7) is realized until the detection mechanism (7) is aligned with the detection point of the resistor substrate. According to the detection point requirements, the motor inside the rotary adjustment seat (9) is turned on to adjust the angle of the detection needle (11). Subsequently, the spacing of the detection needle (11) is finely adjusted by the cylinder (37) inside the spacing adjustment mechanism (10); the detection needle (11) is driven to descend by the first electric push rod (8) so that it is connected with the detection point position of the resistor substrate, and the resistance value of the resistor substrate is detected in cooperation with the controller (32), and the data is recorded; Step 4, low temperature detection: start the compressor (36), the refrigerant passes through the compressor (36) to become high-pressure gas, passes through the second heat exchanger (35) to condense and release heat to become high-pressure liquid, the high-pressure liquid passes through the throttling device to become low-temperature and low-pressure liquid, passes through the first heat exchanger (34) to evaporate and absorb heat to become low-temperature and low-pressure gas, absorbs heat from the air in the temperature control chamber (33), and transports the cold air to the cavity at the rear end of the outer shell (2) through the fan, and then cools the space inside the outer shell (2) through the air outlet grille (31), so as to meet the detection requirements for the resistance value in the low-temperature environment; Step 5, high temperature detection: the flow direction of the refrigerant is changed by a 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, thereby heating the air inside the temperature control chamber (33) to meet the detection requirements for the resistance value in a high-temperature environment; Step 6: Bending detection: the second electric push rod (20) is turned on to drive the mounting seat (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, and the resistance value is detected in this state; Step 7, vibration detection: the resistor substrate is lifted off the upper end surface of the detection platform (4) by using the second electric push rod (20), and the motor (23) is turned on. The eccentric weight wheels (28) at both ends of the motor (23) rotate at high speed to generate high-frequency vibration. The vibration force is transmitted to the resistor substrate through the top plate (22) to achieve high-frequency vibration. The detection needle (11) is movably matched with the sliding rod (38) and the third spring (39) to ensure that it is always in contact with the bottom surface of the resistor substrate. Step 8: After all the 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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