A constant temperature testing fixture with static removal function

Abstract

The present invention discloses a constant temperature type detection fixture with a static electricity removal function, which relates to the field of electronic component detection technology. It includes a temperature and humidity control system, a control system, and a frame. The frame is provided with two sets of fixed plates, a conveyor belt is installed between the two sets of fixed plates, and multiple sets of carrier plates are sequentially provided on the conveyor belt. The multiple carrier plates are installed with coil groups, positioning plates A and positioning plates B, and a spray pipe is installed above the carrier plates. A constant temperature cover is installed on the outside of the conveyor belt. The constant temperature cover is connected to the temperature and humidity control system. A bracket is installed on the outside of the constant temperature cover. A resistance detector is installed on the bracket. An adsorption plate is installed on one side of the resistance detector, and a marking plate is installed on one side of the adsorption plate. The coil group, positioning plate A, and positioning plate B cooperate to realize the positioning and size detection of the humidity sensor. The spray pipe sprays concentrated sulfuric acid on the humidity sensor. The resistance sensor detects the resistance value of the humidity sensor. The adsorption plate recycles the concentrated sulfuric acid.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic component detection, in particular to a constant temperature detection fixture with a static elimination function. Background Art

[0002] A humistor, also known as a humidity sensor or humidity resistor, is an electronic component that can detect and measure the moisture content in the air. It converts changes in ambient humidity into changes in resistance. It cleverly utilizes the principle that the resistance of a hygroscopic material changes as it absorbs moisture from the air. A hygroscopic resistor is primarily composed of a hygroscopic layer, electrodes, and an insulating substrate. The hygroscopic layer is the key component for sensing humidity, the electrodes are responsible for conducting current, and the insulating substrate ensures the mechanical strength and stability of the component.

[0003] The quality of humidity sensors is generally tested by using a testing jig. The existing jigs have the following main problems: (1) they cannot meet the requirements of different humidity sensor sizes and have poor versatility; (2) they cannot achieve batch testing of humidity sensors and have low efficiency; and (3) they cannot mark unqualified humidity sensors. Summary of the Invention

[0004] The object of the present invention is to provide a constant temperature detection fixture with a static elimination function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a constant temperature detection fixture with a static electricity removal function, comprising a temperature and humidity adjustment system and a control system, comprising a frame, two groups of fixed plates are provided on the frame, a conveyor belt is installed between the two groups of fixed plates, multiple groups of carrier plates are sequentially arranged on the conveyor belt, multiple groups of carrier plates are installed with coil groups, positioning plates A and positioning plates B, a spray pipe is installed above the carrier plates, a constant temperature cover is installed on the outside of the conveyor belt, the constant temperature cover is connected to the temperature and humidity adjustment system, the temperature and humidity adjustment system ensures that multiple groups of humidity sensors in the constant temperature cover are in the same humidity state, a bracket is installed on the outside of the constant temperature cover, a resistance detector is installed on the bracket, an adsorption plate is installed on one side of the resistance detector, and a marking plate is installed on one side of the adsorption plate;

[0006] The coil group, positioning plate A and positioning plate B cooperate to realize the positioning and size detection of the humidity resistor, the spray pipe sprays concentrated sulfuric acid on the humidity resistor, the resistance detector detects the resistance value of the humidity resistor, and the adsorption plate recycles the concentrated sulfuric acid.

[0007] The coil group includes a coil A and a coil B. A transverse groove is provided on the carrier plate. The coil A is located in the transverse groove and is arranged on the carrier plate. Two groups of positioning plates A are provided on the carrier plate. A connecting plate that is mutually sleeved is provided between the two groups of positioning plates A. The two groups of connecting plates are respectively provided on the two groups of positioning plates A and form a sliding connection. Metal rings A are provided on the lower sides of the two groups of positioning plates A and are inserted into the transverse groove. The two groups of positioning plates A slide in the transverse groove. The metal rings A and coils A are in sliding contact. The metal rings A and coils A are both electrically connected to the control system.

[0008] A first spring and a first telescopic shaft are respectively connected between the two groups of positioning plates A and the loading plate. The first spring is sleeved on the first telescopic shaft, and the first spring is electrically connected to the control system.

[0009] The two groups of positioning plates A are both provided with longitudinal grooves, the coils B are located in the longitudinal grooves and are provided on the positioning plates A, two groups of positioning plates B are provided on the positioning plates A, the lower sides of the two groups of positioning plates B are provided with metal rings B and are inserted into the longitudinal grooves, the two groups of positioning plates B slide in the longitudinal grooves, the metal rings B are in contact with the coils B, and the coils B and the metal rings B are both electrically connected to the control system;

[0010] A second spring and a second telescopic shaft are respectively connected between the two groups of positioning plates B and positioning plate A. The second spring is sleeved on the second telescopic shaft. The first telescopic shaft and the second telescopic shaft are both telescopic structures. The second spring is electrically connected to the control system. Pressure sensors are installed on both the positioning plate A and the positioning plate B. The pressure sensors are used to detect whether the humidistat is in place.

[0011] The spray pipe is located on one side of the two sets of positioning plates A. The spray pipe is composed of an inner tube and an outer tube that are sleeved together. The inner tube is located inside the outer tube. A sliding sealing connection is formed between the inner tube and the outer tube. The inner tube and the outer tube are respectively arranged on the two opposite sets of positioning plates A. A plurality of spray holes are provided on the lower side of the inner tube and the outer tube. A one-way valve is installed in each of the spray holes. A plurality of the spray holes are directly opposite to the humidity sensor.

[0012] A cavity is provided in the carrier plate near the coil A side, and a cover plate is provided on the upper side of the cavity. The cover plate is provided on the carrier plate. An extrusion plate is slidably installed in the cavity, and the extrusion plate is connected to the carrier plate through a spring. Several electromagnets are provided on the extrusion plate near the coil A side, and concentrated sulfuric acid is provided between the extrusion plate and the carrier plate away from the coil A side. Several of the electromagnets are electrically connected to the control system. The inner cylinder and the outer cylinder are connected to the concentrated sulfuric acid through a pipe passing through the cover plate. A solenoid valve and a flow meter are installed on the pipe connected to the cover plate, and the solenoid valve and the flow meter are both electrically connected to the control system.

[0013] The bracket is set on the frame, and a lifting electric cylinder A is installed on the bracket. The adsorption plate is installed on the telescopic rod of the lifting electric cylinder A. The resistance detector is located on one side of the lifting electric cylinder A, and a conveying cylinder is installed on the other side of the lifting electric cylinder A. The resistance detector is installed on the upper side of the bracket. The resistance detector is provided with two groups of detection heads, and the two groups of detection heads are electrically connected to the resistance detector. The two groups of detection heads are slidably installed on the lower side of the adsorption plate, and a spring is connected between the two groups of detection heads and the adsorption plate.

[0014] The adsorption plate is hollow inside, and an adsorption port is provided on the lower side of the adsorption plate, and the adsorption port is directly opposite to the humidity resistor. The adsorption plate is connected to the upper side of the conveying cylinder through a pipeline, and the upper side of the conveying cylinder is connected to the evaporation box through a pipeline. The conveying cylinder and the evaporation box are both installed on the bracket, and the evaporation box is located on one side of the conveying cylinder. Another set of solenoid valves and flow meters are installed on the pipelines connected to the conveying cylinder, and the other set of solenoid valves and flow meters are electrically connected to the control system.

[0015] A rotating motor is installed under the conveying cylinder, and the rotating motor is installed on a bracket. The output shaft of the rotating motor is located in the conveying cylinder and is provided with a cam. Several protrusions are provided on the upper side of the cam. A reciprocating plate is installed above the cam. The reciprocating plate slides up and down in the conveying cylinder. A protrusion is provided on the lower side of the reciprocating plate. The protrusion on the upper side of the cam and the protrusion on the lower side of the reciprocating plate are matched. A spring is connected between the reciprocating plate and the bottom of the conveying cylinder.

[0016] The evaporator box is hollow, a heating wire is provided on the inner wall of the evaporator box, a discharge port is provided on the evaporator box, the heating wire is electrically connected to the control system, a pressure relief valve and a temperature sensor are installed on the evaporator box, and the pressure relief valve and temperature sensor are electrically connected to the control system.

[0017] The constant temperature cover is set on the frame, and the lifting cylinder B is installed on the bracket away from the lifting cylinder A. The marking plate is installed on the telescopic rod of the lifting cylinder B. A sponge is set on the lower side of the marking plate, and a marking liquid is set in the sponge.

[0018] The conveyor belt is internally engaged with multiple groups of rollers, and the interior of the rollers is an electric roller structure. The multiple groups of rollers are installed on two groups of fixed plates. A control panel is provided on the frame, and a control system is provided inside the control panel. The frame is grounded to remove static electricity generated in the fixture, and a constant temperature cover ensures temperature stability during humidity resistance detection.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. It can accommodate humidity sensors of different sizes and has strong versatility. The first spring gradually lengthens under its own elastic force, pushing the positioning plates A on both sides to move, so that the positioning plates A on both sides clamp and position the humidity sensor in the length direction. After the second spring is powered off, it gradually lengthens under its own elastic force, and the second springs on both sides push the positioning plates B on both sides to clamp and position the humidity sensor in the width direction. The positioning plates A and B reliably position the humidity sensor to facilitate subsequent detection and processing, and it can accommodate humidity sensors of different sizes and has strong versatility.

[0021] 2. Use concentrated sulfuric acid to speed up the detection of humidity sensors and improve detection efficiency. After concentrated sulfuric acid enters the spray pipe, the pressure inside the inner and outer cylinders gradually increases, the one-way valve in the spray hole opens, and concentrated sulfuric acid is sprayed onto the humidity sensor through the spray hole. Concentrated sulfuric acid is hygroscopic and can quickly gather water on the humidity sensor, thereby shortening subsequent detection time and improving the detection efficiency of the fixture.

[0022] 3. Mark unqualified humistors for subsequent processing. The control system continues to drive the humistor to the right through the cooperation of the roller and conveyor belt, so that the humistor is directly below the marking plate. When the humistor is unqualified, the lifting cylinder B drives the marking plate downward, and the sponge on the marking plate contacts the humistor, so that the marking liquid in the sponge is applied to the humistor to distinguish between unqualified and qualified products, so as to facilitate subsequent different processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0024] Figure 2 yes Figure 1 Schematic diagram of the structure after removing the constant temperature cover;

[0025] Figure 3 yes Figure 2 Front view of

[0026] Figure 4 yes Figure 3 A partial enlarged view of area A in the middle;

[0027] Figure 5 yes Figure 3 Schematic diagram of the structure after removing the bracket and its mounting structure;

[0028] Figure 6 yes Figure 5 A partial enlarged view of the middle B area;

[0029] Figure 7 yes Figure 5 Schematic diagram of the structure after removing the conveyor belt (only one set of carrier plates and their mounting structure remain);

[0030] Figure 8 It is a three-dimensional diagram of the carrier plate and its mounting structure;

[0031] Figure 9 yes Figure 8 A top view of

[0032] Figure 10 yes Figure 9 Cross-sectional view at the center CC position;

[0033] Figure 11 yes Figure 10 A partial enlarged view of the middle D area;

[0034] Figure 12 yes Figure 9 Schematic diagram of the structure after removing the positioning plate A, positioning plate B and cover plate on the right side;

[0035] Figure 13 It is a schematic diagram of the internal structure after removing the conveying cylinder.

[0036] In the figure: 1. Control panel; 11. Frame; 111. Fixing plate; 112. Conveyor belt; 113. Roller; 114. Bracket; 12. Resistance tester; 121. Detection head; 13. Lifting cylinder A; 14. Lifting cylinder B; 15. Constant temperature cover; 16. Humidity resistor; 2. Loading plate; 201. Cover plate; 21. Positioning plate A; 211. Metal ring A; 212. First spring; 213. Spray hole; 22. Positioning plate B; 221. Metal ring B; 222. Second spring; 23. Spray pipe; 24. Coil A; 241. Coil B; 25. Extrusion plate; 26. Connecting plate; 3. Adsorption plate; 31. Evaporation box; 4. Marking plate; 5. Conveying cylinder; 51. Rotating motor; 52. Cam; 53. Reciprocating plate. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] Example: Figures 1-13As shown, the present invention provides a technical solution for a constant temperature detection fixture with a static removal function, including a temperature and humidity adjustment system (not shown in the figure), a control system and a frame 11. Two sets of fixed plates 111 are provided on the frame 11. A conveyor belt 112 is installed between the two sets of fixed plates 111. Multiple sets of carrier plates 2 are sequentially arranged on the conveyor belt 112. The multiple sets of carrier plates 2 are installed with coil groups, positioning plates A21 and positioning plates B22. A spray pipe 23 is installed above the carrier plates 2. A constant temperature cover 15 is installed on the outside of the conveyor belt 112. The constant temperature cover 15 is connected to the temperature and humidity adjustment system. The temperature and humidity adjustment system ensures that the multiple sets of humidity sensors 16 in the constant temperature cover 15 are in the same humidity state. A bracket 114 is installed on the outside of the constant temperature cover 15. A resistance detector 12 is installed on the bracket 114, an adsorption plate 3 is installed on one side of the resistance detector 12, and a marking plate 4 is installed on one side of the adsorption plate 3; the coil group, positioning plate A21 and positioning plate B22 cooperate to realize the positioning and size detection of the humidity resistor 16, the spray pipe 23 sprays concentrated sulfuric acid on the humidity resistor 16, the resistance detector 12 detects the resistance value of the humidity resistor 16, and the adsorption plate 3 recycles the concentrated sulfuric acid. Multiple groups of rollers 113 are engaged inside the conveyor belt 112, and the rollers 113 have an electric roller structure inside. The multiple groups of rollers 113 are installed on two groups of fixed plates 111, and a control panel 1 is provided on the frame 11, and a control system is provided in the control panel 1. The frame 11 is grounded to remove static electricity generated in the fixture.

[0039] The coil group includes coil A24 and coil B241. A transverse groove is provided on the carrier plate 2. The coil A24 is located in the transverse groove and is provided on the carrier plate 2. Two groups of positioning plates A21 are provided on the carrier plate 2. A connecting plate 26 that is mutually sleeved is provided between the two groups of positioning plates A21. The two groups of connecting plates 26 are respectively provided on the two groups of positioning plates A21 and form a sliding connection. A metal ring A211 is provided on the lower side of the two groups of positioning plates A21 and is inserted into the transverse groove. The two groups of positioning plates A21 slide in the transverse groove. The metal ring A211 and the coil A24 are in sliding contact. The metal ring A211 and the coil A24 are both electrically connected to the control system; a first spring 212 and a first telescopic shaft are respectively connected between the two groups of positioning plates A21 and the carrier plate 2. The first spring 212 is sleeved on the first telescopic shaft, and the first spring 212 is electrically connected to the control system.

[0040] Both groups of positioning plates A21 are provided with longitudinal grooves, the coil B241 is located in the longitudinal grooves and is provided on the positioning plate A21, and two groups of positioning plates B22 are provided on the positioning plate A21. The lower side of the two groups of positioning plates B22 is provided with a metal ring B221 and is inserted into the longitudinal groove. The two groups of positioning plates B22 slide in the longitudinal grooves, and the metal ring B221 contacts the coil B241. The coil B241 and the metal ring B221 are both electrically connected to the control system; the second spring 222 and the second telescopic shaft are respectively connected between the two groups of positioning plates B22 and the positioning plate A21, and the second spring 222 is sleeved on the second telescopic shaft. The first telescopic shaft and the second telescopic shaft (not shown in the figure) are both telescopic structures. The second spring 222 is electrically connected to the control system. Pressure sensors (not shown in the figure) are installed on the positioning plate A21 and the positioning plate B22. The pressure sensor is used to detect whether the humidity resistor 16 is in place.

[0041] The spray pipe 23 is located on one side of the two sets of positioning plates A21. The spray pipe 23 is composed of an inner tube and an outer tube that are sleeved together. The inner tube is located inside the outer tube. A sliding sealing connection is formed between the inner tube and the outer tube. The inner tube and the outer tube are respectively arranged on the two opposite sets of positioning plates A21. A plurality of spray holes 213 are provided on the lower side of the inner tube and the outer tube. A one-way valve is installed in each of the spray holes 213. The plurality of spray holes 213 are directly opposite to the humidity resistor 16. A cavity is provided in the carrier plate 2 near the side of the coil A24. A cover plate 201 is provided on the upper side of the cavity. The cover plate 201 is set on the carrier plate 2, and an extrusion plate 25 is slidably installed in the cavity. The extrusion plate 25 is connected to the carrier plate 2 through a spring. Several electromagnets are set on the extrusion plate 25 on the side close to the coil A24, and concentrated sulfuric acid is set between the extrusion plate 25 and the carrier plate 2 on the side away from the coil A24. Several electromagnets are electrically connected to the control system. The inner cylinder and the outer cylinder are connected to the concentrated sulfuric acid through a pipe passing through the cover plate 201. A solenoid valve and a flow meter are installed on the pipe connected to the cover plate 201, and the solenoid valve and the flow meter are both electrically connected to the control system.

[0042] The bracket 114 is set on the frame 11, and the lifting cylinder A13 is installed on the bracket 114. The adsorption plate 3 is installed on the telescopic rod of the lifting cylinder A13. The resistance detector 12 is located on one side of the lifting cylinder A13, and the conveying cylinder 5 is installed on the other side of the lifting cylinder A13. The resistance detector 12 is installed on the upper side of the bracket 114. The resistance detector 12 is provided with two groups of detection heads 121. The two groups of detection heads 121 are electrically connected to the resistance detector 12. The two groups of detection heads 121 are slidably installed on the lower side of the adsorption plate 3. A spring is connected between the two groups of detection heads 121 and the adsorption plate 3; the adsorption plate 3 is hollow inside, and an adsorption port is provided on the lower side of the adsorption plate 3. The adsorption port is positive. For the humidity-sensitive resistor 16, the adsorption plate 3 is connected to the upper side of the conveying cylinder 5 through a pipe, and the upper side of the conveying cylinder 5 is connected to the evaporation box 31 through a pipe. The conveying cylinder 5 and the evaporation box 31 are both installed on the bracket 114, and the evaporation box 31 is located on one side of the conveying cylinder 5. Another set of solenoid valves and flow meters are installed on the pipes connected to the conveying cylinder 5, and the other set of solenoid valves and flow meters are electrically connected to the control system; the constant temperature cover 15 is set on the frame 11, and the lifting cylinder B14 is installed on the bracket 114 away from the lifting cylinder A13, and the marking plate 4 is installed on the telescopic rod of the lifting cylinder B14, and a sponge is provided on the lower side of the marking plate 4, and a marking liquid is provided in the sponge.

[0043] A rotating motor 51 is installed below the conveying cylinder 5, and the rotating motor 51 is installed on the bracket 114. The output shaft of the rotating motor 51 is located in the conveying cylinder 5 and is provided with a cam 52. Several protrusions are provided on the upper side of the cam 52. A reciprocating plate 53 is installed above the cam 52. The reciprocating plate 53 slides up and down in the conveying cylinder 5. A protrusion is provided on the lower side of the reciprocating plate 53. The protrusions on the upper side of the cam 52 and the protrusions on the lower side of the reciprocating plate 53 are matched with each other. A spring is connected between the reciprocating plate 53 and the bottom of the conveying cylinder 5; the evaporator 31 is hollow, and a heating wire is provided on the inner wall of the evaporator 31. A discharge port is provided on the evaporator 31. The heating wire is electrically connected to the control system. A pressure relief valve and a temperature sensor are installed on the evaporator 31, and the pressure relief valve and the temperature sensor are electrically connected to the control system.

[0044] Working principle: Press the start button on the control panel 1, and the control system energizes the first spring 212 and the second spring 222. After the first springs 212 on both sides are energized, they pull the positioning plates A21 on both sides to slide in the horizontal slide groove, so that the distance between the positioning plates A21 on both sides is greater than the length of the humidity-sensitive resistor 16. The two sets of connecting plates 26 that are fitted together follow the positioning plates A21 on both sides to move telescopically to facilitate the placement of the humidity-sensitive resistor 16.

[0045] After the second springs 222 on both sides are energized, they pull the positioning plates B22 on both sides to slide in the longitudinal slide groove, so that the distance between the positioning plates B22 on both sides is greater than the width of the humidity-sensitive resistor 16. Afterwards, the staff places the humidity-sensitive resistor 16 on the connecting plate 26 and de-energizes the first spring 212 and the second spring 222 through the control system. The first spring 212 gradually becomes longer under the action of its own elastic force, and the first springs 212 on both sides push the positioning plates A21 to move, so that the positioning plates A21 on both sides clamp and position the humidity-sensitive resistor 16 in the length direction; after the second spring 222 is de-energized, it gradually becomes longer under the action of its own elastic force, and the second springs 222 on both sides push the positioning plates B22 on both sides to clamp and position the humidity-sensitive resistor 16 in the width direction; the humidity-sensitive resistor 16 is reliably positioned by the positioning plates A21 and B22 to facilitate subsequent detection and processing.

[0046] When the hygroscopic resistor 16 on the leftmost side of the conveyor belt 112 is positioned, the pressure sensors on the positioning plates A21 and B22 on the leftmost side of the conveyor belt 112 feed back data to the control system. The control system connects the metal rings A211 on the lower sides of the two sets of positioning plates A21 (on the leftmost side of the conveyor belt 112) to the circuit. The current enters the coil A24 from the metal ring A211 on one side, flows through the effective turns of the coil A24, and then flows out from the metal ring A211 on the other side to the control system. The control system calculates and processes the current to obtain the length of the hygroscopic resistor 16. The effective turns at this time refer to the turns of the coil A24 between the metal rings A211 on both sides.

[0047] After the control system obtains the length of the humidity-sensitive resistor 16, it first cuts off the power to the metal rings A211 on both sides, and then connects the two sets of metal rings B221 on the positioning plate B22 (the leftmost side of the conveyor belt 112) to the circuit respectively. The current enters the coil B241 from the metal ring B221 on one side, flows through the effective number of turns of the coil B241, and then flows out from the metal ring B221 on the other side to the control system. The control system calculates and processes the current to obtain the width of the humidity-sensitive resistor 16. The effective number of turns at this time refers to the number of turns of the coil B241 between the metal rings B221 on both sides.

[0048] After the control system obtains the length and width of the humidity resistor 16, it calculates the area of ​​the humidity resistor 16 and calculates the required flow rate of concentrated sulfuric acid based on the area of ​​the humidity resistor 16. The control system first cuts off the power to the metal ring A211, the metal ring B221, the coil A24 and the coil B241, then connects the two ends of the coil A24 to the circuit and increases the current flowing in, and connects several electromagnets on the extrusion plate 25 to the circuit and opens the solenoid valve in the pipeline between the cover plate 201 and the spray pipe 23, so that the magnetic field generated at the two ends of the coil A24 and the electromagnetic The magnetic fields generated by iron repel each other. Under the action of the repulsive force, the electromagnet pushes the extrusion plate 25 to move to the right and compresses the spring. The extrusion plate 25 squeezes the concentrated sulfuric acid and transports it to the spray pipe 23 through the pipeline and the cover plate 201. After the concentrated sulfuric acid enters the spray pipe 23, the pressure inside the inner cylinder and the outer cylinder gradually increases, and the one-way valve in the spray hole 213 opens. The concentrated sulfuric acid is sprayed onto the humidity resistor 16 through the spray hole 213. The concentrated sulfuric acid has water absorption and can quickly gather water on the humidity resistor 16, thereby shortening the subsequent detection time and improving the detection efficiency of the fixture.

[0049] The control system adjusts the current passed through the coil A24 and the electromagnet according to the area of ​​the humidifier 16. When the area of ​​the humidifier 16 is large, the current passed through the coil A24 and the electromagnet is increased to increase the repulsive force between the coil A24 and the electromagnet. After the repulsive force between the coil A24 and the electromagnet increases, the more the electromagnet drives the extrusion plate 25 to move to the right, the more concentrated sulfuric acid is squeezed by the extrusion plate 25 and sprayed from the spray pipe 23. The control system adjusts the current passed through the coil A24 and the electromagnet to achieve flow regulation of concentrated sulfuric acid to meet the needs of different sizes of humidifiers 16, and has a wider range of applications.

[0050] When the humidifier 16 on the leftmost side of the conveyor belt 112 is sprayed with concentrated sulfuric acid, the flow meter in the pipe between the cover plate 201 and the spray pipe 23 feeds back data to the control system. The control system drives the conveyor belt 112 to move to the right through the roller 113. The conveyor belt 112 drives the leftmost loading plate 2 to move to the right. The loading plate 2 drives the positioning plate A21, positioning plate B22, coil A24, coil B241, first spring 212, second spring 222 and humidifier 16 to move to the right, so that the humidifier 16 is located directly below the adsorption plate 3.

[0051] When the humidity-sensitive resistor 16 is located directly below the adsorption plate 3, the encoder inside the roller 113 feeds back data to the control system. The control system controls the lifting electric cylinder A13 to drive the adsorption plate 3 to move downward, so that the detection head 121 on the lower side of the adsorption plate 3 contacts the two ends of the humidity-sensitive resistor 16, and cooperates with the resistance detector 12 to measure the resistance value of the humidity-sensitive resistor 16, and then judge the performance of the humidity-sensitive resistor 16; when the measured resistance value meets the standard value, the control system determines that the humidity-sensitive resistor 16 is a qualified product; when the measured resistance value does not meet the standard value, the control system determines that the humidity-sensitive resistor 16 is an unqualified product. At this time, the encoder inside the roller 113 feeds back the position data of this group of unqualified humidity-sensitive resistors 16 to the control system.

[0052] After the humidity-sensitive resistor 16 is detected by the detection head 121, the control system first cuts off the power to the two groups of detection heads 121, and continues to drive the adsorption plate 3 to move downward through the lifting cylinder A13, so that the adsorption plate 3 is close to the humidity-sensitive resistor 16. The lifting cylinder A13 feeds back the position data of the adsorption plate 3 to the control system, and the control system controls the rotating motor 51 to drive the cam 52 to rotate. When the protrusion on the upper side of the cam 52 is no longer in contact with the protrusion on the reciprocating plate 53, the control system controls the solenoid valve in the pipeline between the adsorption plate 3 and the conveying cylinder 5 to open according to the data of the internal encoder of the rotating motor 51, and the spring connected to the reciprocating plate 53 is released. The spring pulls the reciprocating plate 53 to move downward, so that the concentrated sulfuric acid and water on the surface of the humidity-sensitive resistor 16 are sucked into the adsorption plate 3, and enter the upper side of the conveying cylinder 5 through the adsorption plate 3 and the pipeline, so as to clean the concentrated sulfuric acid and water on the surface of the humidity-sensitive resistor 16 and convey them to the conveying cylinder 5.

[0053] The rotating motor 51 continues to drive the cam 52 to rotate, so that the protrusion on the upper side of the cam 52 contacts the protrusion on the lower side of the reciprocating plate 53, and the cam 52 pushes the reciprocating plate 53 to move upward. The control system controls the solenoid valve in the pipeline between the adsorption plate 3 and the conveying cylinder 5 to close and the solenoid valve in the pipeline between the conveying cylinder 5 and the evaporation box 31 to open based on the data of the encoder inside the rotating motor 51. The reciprocating plate 53 pushes the concentrated sulfuric acid on the upper side of the conveying cylinder 5 into the evaporation box 31.

[0054] After the concentrated sulfuric acid and water enter the evaporation tank 31, the flow meter in the pipeline between the delivery cylinder 5 and the evaporation tank 31 feeds data back to the control system. The control system controls the heating wire to heat the used concentrated sulfuric acid, concentrating it for reuse. The concentrated sulfuric acid can be taken out through the discharge port and reused.

[0055] After the concentrated sulfuric acid and water on the humistor 16 are adsorbed, the flow meter in the pipeline between the adsorption plate 3 and the conveying cylinder 5 feeds back the data to the control system. The control system continues to drive the humistor 16 to move to the right through the roller 113 and the conveyor belt 112, so that the humistor 16 is located directly below the marking plate 4. When the humistor 16 is an unqualified product, the lifting electric cylinder B14 drives the marking plate 4 to move downward, and the sponge on the marking plate 4 contacts the humistor 16, so that the marking liquid in the sponge is smeared on the humistor 16 to distinguish between unqualified products and qualified products, so as to facilitate subsequent different processing. After that, the roller 113 and the conveyor belt 112 cooperate to move the group of humistors 16 to the far right.

[0056] When the humistor 16 moves to the rightmost side of the conveyor belt 112, the encoder inside the roller 113 feeds back data to the control system, and the control system energizes the first spring 212 and the second spring 222 on the rightmost side of the conveyor belt 112. The first spring 212 and the second spring 222 on both sides pull the positioning plate A21 and the positioning plate B22 respectively, so that the positioning plates A21 and the positioning plates B22 on both sides do not clamp and position the humistor 16, and the staff removes the humistor 16.

[0057] In the present application, the pipeline connected to the concentrated sulfuric acid on one side of the extrusion plate 25 is connected to the conveying cylinder 5 through an air slip ring. The air slip ring is arranged on the fixed plate 111 to ensure the transportation of concentrated sulfuric acid during the movement of the loading plate 2 following the conveyor belt 112. The power lines of the first spring 212, the second spring 222, the coil A24 and the coil B241 are connected by an electric slip ring or an elastic connector to ensure normal circuit connectivity.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A constant temperature detection fixture with static elimination function, including a temperature and humidity adjustment system and a control system, characterized by: The invention comprises a frame (11), two groups of fixed plates (111) are provided on the frame (11), a conveyor belt (112) is installed between the two groups of fixed plates (111), a plurality of carrier plates (2) are sequentially provided on the conveyor belt (112), a coil group, a positioning plate A (21) and a positioning plate B (22) are installed on the plurality of carrier plates (2), a spray pipe (23) is installed above the carrier plates (2), a constant temperature cover (15) is installed on the outside of the conveyor belt (112), the constant temperature cover (15) is connected to a temperature and humidity control system, a bracket (114) is installed on the outside of the constant temperature cover (15), a resistance detector (12) is installed on the bracket (114), an adsorption plate (3) is installed on one side of the resistance detector (12), and a marking plate (4) is installed on one side of the adsorption plate (3); The coil group, the positioning plate A (21) and the positioning plate B (22) cooperate to realize the positioning and size detection of the humidity-sensitive resistor (16); the spray pipe (23) sprays concentrated sulfuric acid on the humidity-sensitive resistor (16); the resistance detector (12) detects the resistance value of the humidity-sensitive resistor (16); and the adsorption plate (3) recycles the concentrated sulfuric acid; The coil group includes a coil A (24) and a coil B (241), a transverse groove is provided on the carrier plate (2), the coil A (24) is located in the transverse groove and is provided on the carrier plate (2), two groups of positioning plates A (21) are provided on the carrier plate (2), a connecting plate (26) is provided between the two groups of positioning plates A (21) and is sleeved with each other, the two groups of connecting plates (26) are respectively provided on the two groups of positioning plates A (21) and form a sliding connection, the lower side of the two groups of positioning plates A (21) is provided with a metal ring A (211) and is inserted into the transverse groove, the two groups of positioning plates A (21) slide in the transverse groove, the metal ring A (211) and the coil A (24) are in sliding contact, and the metal ring A (211) and the coil A (24) are both electrically connected to the control system; A first spring (212) and a first telescopic shaft are respectively connected between the two groups of positioning plates A (21) and the loading plate (2), the first spring (212) is sleeved on the first telescopic shaft, and the first spring (212) is electrically connected to the control system; The two groups of positioning plates A (21) are both provided with longitudinal grooves, the coil B (241) is located in the longitudinal grooves and is provided on the positioning plate A (21), two groups of positioning plates B (22) are provided on the positioning plate A (21), the lower sides of the two groups of positioning plates B (22) are provided with metal rings B (221) and are inserted into the longitudinal grooves, the two groups of positioning plates B (22) slide in the longitudinal grooves, the metal rings B (221) are in contact with the coils B (241), and the coils B (241) and the metal rings B (221) are both electrically connected to the control system; A second spring (222) and a second telescopic shaft are respectively connected between the two groups of positioning plates B (22) and positioning plate A (21), the second spring (222) is sleeved on the second telescopic shaft, the first telescopic shaft and the second telescopic shaft are both telescopic structures, the second spring (222) is electrically connected to the control system, and pressure sensors are installed on both the positioning plate A (21) and the positioning plate B (22); The spray pipe (23) is located on one side of the two sets of positioning plates A (21). The spray pipe (23) is composed of an inner tube and an outer tube that are sleeved together. The inner tube is located inside the outer tube. A sliding sealing connection is formed between the inner tube and the outer tube. The inner tube and the outer tube are respectively arranged on the two opposite sets of positioning plates A (21). A plurality of spray holes (213) are provided on the lower side of the inner tube and the outer tube. A one-way valve is installed in each of the spray holes (213). The plurality of spray holes (213) are directly opposite to the humidity sensor (16). A cavity is provided in the carrier plate (2) on the side close to the coil A (24), and a cover plate (201) is provided on the upper side of the cavity. The cover plate (201) is provided on the carrier plate (2), and an extrusion plate (25) is slidably installed in the cavity. The extrusion plate (25) is connected to the carrier plate (2) through a spring. A plurality of electromagnets are provided on the extrusion plate (25) on the side close to the coil A (24), and concentrated sulfuric acid is provided between the extrusion plate (25) and the carrier plate (2) on the side away from the coil A (24). The plurality of electromagnets are electrically connected to a control system. The inner cylinder and the outer cylinder are connected to the concentrated sulfuric acid through a pipeline passing through the cover plate (201). A solenoid valve and a flow meter are installed on the pipeline connected to the cover plate (201), and the solenoid valve and the flow meter are both electrically connected to the control system.

2. The constant temperature detection fixture with static elimination function according to claim 1, characterized in that: The bracket (114) is arranged on the frame (11), and a lifting electric cylinder A (13) is installed on the bracket (114). The adsorption plate (3) is installed on the telescopic rod of the lifting electric cylinder A (13). The resistance detector (12) is located on one side of the lifting electric cylinder A (13), and a conveying cylinder (5) is installed on the other side of the lifting electric cylinder A (13). The resistance detector (12) is installed on the upper side of the bracket (114). The resistance detector (12) is provided with two groups of detection heads (121). The two groups of detection heads (121) are electrically connected to the resistance detector (12). The two groups of detection heads (121) are slidably installed on the lower side of the adsorption plate (3), and a spring is connected between the two groups of detection heads (121) and the adsorption plate (3).

3. The constant temperature detection fixture with static elimination function according to claim 2, characterized in that: The adsorption plate (3) is hollow inside, and an adsorption port is provided on the lower side of the adsorption plate (3), and the adsorption port is directly opposite to the humidity-sensitive resistor (16). The adsorption plate (3) is connected to the upper side of the conveying cylinder (5) through a pipeline, and the upper side of the conveying cylinder (5) is connected to the evaporation box (31) through a pipeline. The conveying cylinder (5) and the evaporation box (31) are both installed on the bracket (114), and the evaporation box (31) is located on one side of the conveying cylinder (5). Another set of solenoid valves and flow meters are installed on the pipelines connected to the conveying cylinder (5), and the other set of solenoid valves and flow meters are both electrically connected to the control system.

4. The constant temperature detection fixture with static elimination function according to claim 3, characterized in that: A rotating motor (51) is installed below the conveying cylinder (5), and the rotating motor (51) is installed on a bracket (114). The output shaft of the rotating motor (51) is located in the conveying cylinder (5) and is provided with a cam (52). A plurality of protrusions are provided on the upper side of the cam (52). A reciprocating plate (53) is installed above the cam (52). The reciprocating plate (53) slides up and down in the conveying cylinder (5). A protrusion is provided on the lower side of the reciprocating plate (53). The protrusion on the upper side of the cam (52) and the protrusion on the lower side of the reciprocating plate (53) are matched. A spring is connected between the reciprocating plate (53) and the bottom of the conveying cylinder (5).

5. The constant temperature detection fixture with static elimination function according to claim 4, characterized in that: The evaporation box (31) is hollow, a heating wire is provided on the inner wall of the evaporation box (31), a discharge port is provided on the evaporation box (31), the heating wire is electrically connected to the control system, a pressure relief valve and a temperature sensor are installed on the evaporation box (31), and the pressure relief valve and the temperature sensor are electrically connected to the control system.

6. The constant temperature detection fixture with static elimination function according to claim 5, characterized in that: The constant temperature cover (15) is arranged on the frame (11), and a lifting cylinder B (14) is installed on the bracket (114) away from the lifting cylinder A (13). The marking plate (4) is installed on the telescopic rod of the lifting cylinder B (14). A sponge is arranged on the lower side of the marking plate (4), and a marking liquid is arranged in the sponge.

7. The constant temperature detection fixture with static elimination function according to claim 6, characterized in that: The conveyor belt (112) is internally engaged with a plurality of rollers (113), the rollers (113) are internally motorized roller structures, and the plurality of rollers (113) are mounted on two sets of fixed plates (111). A control panel (1) is provided on the frame (11), and a control system is provided in the control panel (1). The frame (11) is grounded.

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