Constant-temperature detection jig with static electricity removing function

Abstract

The invention discloses a constant-temperature detection jig with a static electricity removing function, and relates to the technical field of electronic component detection. Comprising a temperature and humidity adjusting system, a control system and a rack, two sets of fixing plates are arranged on the rack, a conveying belt is installed between the two sets of fixing plates, multiple sets of carrying plates are sequentially arranged on the conveying belt, coil sets, a positioning plate A and a positioning plate B are installed on the multiple sets of carrying plates, spraying pipes are installed above the carrying plates, and a constant-temperature cover is installed on the outer side of the conveying belt; the constant-temperature cover is connected with the temperature and humidity adjusting system, a support is installed on the outer side of the constant-temperature cover, a resistance detector is installed on the support, 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 assembly, the positioning plate A and the positioning plate B are matched to achieve positioning and size detection of the hygristor, the spraying pipe sprays concentrated sulfuric acid to the hygristor, the resistance detector detects the resistance value of the hygristor, and the adsorption plate recycles the concentrated sulfuric acid.

Description

Technical Field

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

[0002] ‌Humidity resistor, also known as humidity sensor or humidity resistor, is an electronic component that can detect and measure the moisture content in the air. It plays the role of converting changes in environmental humidity into changes in resistance value. It cleverly uses the principle that the resistance value will change after the humidity-sensitive material absorbs moisture in the air. Humidity resistor is mainly composed of humidity-sensitive layer, electrode and insulating matrix. The humidity-sensitive layer is the key part of sensing humidity, the electrode is responsible for conducting current, and the insulating matrix ensures the mechanical strength and stability of the component.

[0003] The quality of humistors is usually tested using a testing fixture. Existing fixtures have the following main problems: (1) they cannot meet the needs of different humistor sizes and have poor versatility; (2) they cannot test humistors in batches and have low efficiency; and (3) they cannot mark unqualified humistors. Summary of the invention

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

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a constant temperature type detection fixture with a static electricity removal function, including a temperature and humidity adjustment system and a control system, including a frame, two groups of fixed plates are arranged on the frame, a conveyor belt is installed between the two groups of fixed plates, multiple groups of carrier plates are arranged on the conveyor belt in sequence, coil groups, positioning plates A and positioning plates B are installed on the multiple groups of carrier plates, a spray pipe is installed above the carrier plate, 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-sensitive resistors 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; The coil group, positioning plate A and positioning plate B cooperate to realize the positioning and size detection of the humistor, the spray pipe sprays concentrated sulfuric acid on the humistor, the resistance detector detects the resistance value of the humistor, and the adsorption plate recycles the concentrated sulfuric acid.

[0006] The coil group includes a coil A and a coil B, a transverse slide groove is provided on the carrier plate, the coil A is located in the transverse slide groove and is provided on the carrier plate, two groups of positioning plates A are provided on the carrier plate, a connecting plate which 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, the lower sides of the two groups of positioning plates A are provided with a metal ring A and inserted into the transverse slide groove, the two groups of positioning plates A slide in the transverse slide groove, the metal ring A and the coil A are in sliding contact, and the metal ring A and the coil A are both electrically connected to the control system; A first spring and a first telescopic shaft are respectively connected between the two groups of the positioning plates A and the loading plates. The first spring is sleeved on the first telescopic shaft, and the first spring is electrically connected to the control system.

[0007] The two groups of positioning plates A are both provided with longitudinal slide grooves, the coil B is located in the longitudinal slide grooves and is provided on the positioning plate A, two groups of positioning plates B are provided on the positioning plate A, metal rings B are provided on the lower sides of the two groups of positioning plates B and are inserted into the longitudinal slide grooves, the two groups of positioning plates B slide in the longitudinal slide 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; 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, and pressure sensors are installed on both the positioning plate A and the positioning plate B, and the pressure sensors are used to detect whether the humister is in place.

[0008] The spray pipe is located on one side of the two groups of positioning plates A. The spray pipe is composed of an inner tube and an outer tube which 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 two opposite groups of positioning plates A. A plurality of spray holes are arranged on the lower sides of the inner tube and the outer tube. A check valve is installed in each of the spray holes. A plurality of the spray holes are directly opposite to the humidity sensitive resistor. A cavity is arranged in the carrier plate near the coil A side, a cover plate is arranged on the upper side of the cavity, the cover plate is arranged on the carrier plate, an extrusion plate is slidably installed in the cavity, the extrusion plate is connected to the carrier plate through a spring, a plurality of electromagnets are arranged on the extrusion plate near the coil A side, concentrated sulfuric acid is arranged between the extrusion plate and the carrier plate far away from the coil A side, the plurality of electromagnets are electrically connected to the control system, the inner cylinder and the outer cylinder are connected to the concentrated sulfuric acid through a pipeline passing through the cover plate, an electromagnetic valve and a flow meter are installed on the pipeline connected to the cover plate, and the electromagnetic valve and the flow meter are both electrically connected to the control system.

[0009] 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.

[0010] 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-sensitive 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.

[0011] A rotating motor is installed below 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. A plurality of 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, and a spring is connected between the reciprocating plate and the bottom of the conveying cylinder.

[0012] The evaporator box is hollow, a heating wire is arranged on the inner wall of the evaporator box, a discharge port is arranged 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 the temperature sensor are electrically connected to the control system.

[0013] The constant temperature cover is arranged on the frame, and a 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 arranged on the lower side of the marking plate, and a marking liquid is arranged in the sponge.

[0014] The conveyor belt is internally meshed with multiple groups of rollers, the interior of the rollers is an electric roller structure, the multiple groups of rollers are mounted on two groups of fixed plates, a control panel is provided on the frame, a control system is provided in 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.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. It can meet the needs of humidity sensors of different sizes and has strong versatility. The first spring gradually becomes longer under the action of its own elastic force, and the first springs on both sides push the positioning plate A to move, so that the positioning plates A on both sides clamp and position the humidity sensor in the length direction; the second spring gradually becomes longer under the action of its own elastic force after power is cut off, 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 humidity sensor is reliably positioned by the positioning plates A and B to facilitate subsequent detection and processing, which can meet the needs of humidity sensors of different sizes and has strong versatility.

[0016] 2. Use concentrated sulfuric acid to speed up the detection of humidity resistors 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 on the humidity resistor through the spray hole. Concentrated sulfuric acid is hygroscopic and can quickly gather water on the humidity resistor, thereby shortening the subsequent detection time and improving the detection efficiency of the fixture.

[0017] 3. Mark the unqualified humistor for subsequent processing. The control system continues to drive the humistor to move to the right through the roller and the conveyor belt, so that the humistor is located 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 smeared on the humistor to distinguish between unqualified and qualified products, so as to facilitate different subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 yes Figure 1 Schematic diagram of the structure after removing the constant temperature cover; Figure 3 yes Figure 2 A front view of Figure 4 yes Figure 3 A partial enlarged view of the middle A area; Figure 5 yes Figure 3 Schematic diagram of the structure after removing the bracket and its mounting structure; Figure 6 yes Figure 5 A partial enlarged view of the middle B area; 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 are retained); Figure 8 is a three-dimensional diagram of the carrier plate and its mounting structure; Fig. 9 yes Figure 8 A top view of Fig.10 yes Fig. 9 Cross-sectional view at the middle CC position; Fig.11 yes Fig.10 A partial enlarged view of the D area in the middle; Fig.12 yes Fig. 9 Schematic diagram of the structure after removing the positioning plate A, positioning plate B and cover plate on the right side; Fig.13 It is a schematic diagram of the internal structure after removing the conveying cylinder.

[0019] In the figure: 1. control panel; 11. frame; 111. fixing plate; 112. conveyor belt; 113. roller; 114. bracket; 12. resistance detector; 121. detection head; 13. lifting cylinder A; 14. lifting cylinder B; 15. constant temperature cover; 16. humidity sensitive 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; 251. electromagnet; 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

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0021] Example: Figure 1-Figure 13As shown, the present invention provides a technical solution of a constant temperature type detection fixture with a static electricity removal function, including a temperature and humidity adjustment system (not shown in the figure), a control system and a frame 11, two groups of fixed plates 111 are arranged on the frame 11, a conveyor belt 112 is installed between the two groups of fixed plates 111, multiple groups of carrier plates 2 are arranged on the conveyor belt 112 in sequence, coil groups, positioning plates A21 and positioning plates B22 are installed on the multiple groups 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 the temperature and humidity adjustment system, the temperature and humidity adjustment system ensures that the multiple groups of humidity-sensitive resistors 16 in the constant temperature cover 15 are in the same humidity state, and 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 A21 and the 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. A plurality of groups of rollers 113 are meshed inside the conveyor belt 112, and the inside of the rollers 113 is an electric roller structure. The plurality of groups of rollers 113 are installed on two groups 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 to remove static electricity generated in the fixture.

[0022] The coil group includes a coil A24 and a 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. Metal rings A211 are provided on the lower sides of the two groups of positioning plates A21 and are 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.

[0023] 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, two groups of positioning plates B22 are provided on the positioning plate A21, metal rings B221 are provided on the lower sides of the two groups of positioning plates B22 and are inserted into the longitudinal grooves, the two groups of positioning plates B22 slide in the longitudinal grooves, the metal rings B221 are in contact with the coils B241, and the coils B241 and the metal rings 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, 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, and pressure sensors (not shown in the figure) are installed on the positioning plates A21 and B22, and the pressure sensors are used to detect whether the humidity-sensitive resistor 16 is in place.

[0024] 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 mutually sleeved. 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 arranged on the lower sides of the inner tube and the outer tube. A check valve is installed in each of the plurality of spray holes 213. The plurality of spray holes 213 are directly opposite to the humidity sensitive resistor 16. A cavity is arranged in the carrier plate 2 near the side of the coil A24. A cover plate 201 is arranged on the upper side of the cavity. The cover plate 2 01 is arranged on the carrier plate 2, and a squeezing plate 25 is slidably installed in the cavity, and the squeezing plate 25 is connected to the carrier plate 2 through a spring, and a plurality of electromagnets 251 are arranged on the squeezing plate 25 close to the coil A24 side, and concentrated sulfuric acid is arranged between the squeezing plate 25 and the carrier plate 2 away from the coil A24 side, and the plurality of electromagnets 251 are electrically connected to the control system, and the inner cylinder and the outer cylinder are connected to the concentrated sulfuric acid through a pipeline passing through the cover plate 201, and 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 electrically connected to the control system.

[0025] The bracket 114 is arranged on the frame 11, and a 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 a 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, and 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; 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 positive. For 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 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. The marking plate 4 is installed on the telescopic rod of the lifting cylinder B14, and a sponge is set on the lower side of the marking plate 4, and a marking liquid is set in the sponge.

[0026] 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. 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. The evaporator box 31 is hollow, and a heating wire is provided on the inner wall of the evaporator box 31. A discharge port is provided on the evaporator box 31. The heating wire is electrically connected to the control system. A pressure relief valve and a temperature sensor are installed on the evaporator box 31. The pressure relief valve and the temperature sensor are electrically connected to the control system.

[0027] Working principle: Press the start button on the control panel 1, the control system energizes the first spring 212 and the second spring 222, and 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, and the two sets of connecting plates 26 that fit each other follow the positioning plates A21 on both sides to telescope and move, so as to facilitate the placement of the humidity-sensitive resistor 16; 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. After that, the staff places the humidity-sensitive resistor 16 on the connecting plate 26, and cuts off the power to 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 powered off, 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.

[0028] When the hygroscopic resistor 16 on the leftmost side of the conveyor belt 112 is positioned, the pressure sensors on the leftmost positioning plates A21 and B22 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 (the leftmost sides 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.

[0029] 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 groups 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 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 turns at this time refer to the turns of the coil B241 between the metal rings B221 on both sides.

[0030] After obtaining the length and width of the humidity-sensitive resistor 16, the control system calculates the area of ​​the humidity-sensitive resistor 16, and calculates the required flow rate of concentrated sulfuric acid based on the area of ​​the humidity-sensitive resistor 16. The control system first disconnects the metal ring A211, the metal ring B221, the coil A24, and the coil B241, and then connects the two ends of the coil A24 to the circuit and increases the current passed, and connects the several electromagnets 251 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 electromagnet 2 The magnetic fields generated by 51 repel each other. Under the action of the repulsive force, the electromagnet 251 pushes the extrusion plate 25 to move rightward 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 on the humidity-sensitive resistor 16 through the spray hole 213. The concentrated sulfuric acid has water absorption and can quickly gather water on the humidity-sensitive resistor 16, thereby shortening the subsequent detection time and improving the detection efficiency of the fixture.

[0031] The control system adjusts the current passed through the coil A24 and the electromagnet 251 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 251 is increased to increase the repulsive force between the coil A24 and the electromagnet 251. After the repulsive force between the coil A24 and the electromagnet 251 increases, the more the electromagnet 251 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 251 to achieve flow regulation of concentrated sulfuric acid. In order to cope with different sizes of humidifiers 16, it can meet different usage occasions and has a wider range of applications.

[0032] When the humidistat 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 right through the roller 113. The conveyor belt 112 drives the leftmost carrier plate 2 to move right. The carrier plate 2 drives the positioning plate A21, positioning plate B22, coil A24, coil B241, first spring 212, second spring 222 and humidistat 16 to move right, so that the humidistat 16 is located directly below the adsorption plate 3.

[0033] 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, and 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, and at this time, the encoder inside the roller 113 feeds back the position data of the group of unqualified humidity-sensitive resistors 16 to the control system.

[0034] After the humidity-sensitive resistor 16 is detected by the detection head 121, the control system first cuts off the power of 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 not in contact with the protrusion on the reciprocating plate 53, the control system controls the electromagnetic 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 that the concentrated sulfuric acid and water on the surface of the humidity-sensitive resistor 16 are cleaned and conveyed to the conveying cylinder 5; 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 according to 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.

[0035] After the concentrated sulfuric acid and water enter the evaporation box 31, the flow meter in the pipeline between the conveying cylinder 5 and the evaporation box 31 feeds back data to the control system. The control system controls the heating wire to heat the used concentrated sulfuric acid to concentrate the concentrated sulfuric acid for reuse. The concentrated sulfuric acid can be taken out through the discharge port and used again.

[0036] 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 cooperation of 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 a defective 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 defective 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 humistor 16 to the far right.

[0037] 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 B22 on both sides do not clamp and position the humistor 16, and the staff removes the humistor 16.

[0038] 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, and the air slip ring is arranged on the fixed plate 111 to ensure the transportation of concentrated sulfuric acid during the movement of the carrier plate 2 following the conveyor belt 112, and the power supply lines of the first spring 212, the second spring 222, the coil A24 and the coil B241, etc., are connected by an electric slip ring or an elastic connector to ensure normal circuit connectivity.

[0039] 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 constant temperature type detection fixture with static electricity removal function, including a temperature and humidity adjustment system and a control system, characterized in that: The machine comprises a frame (11), wherein two groups of fixing plates (111) are arranged on the frame (11), a conveyor belt (112) is installed between the two groups of fixing plates (111), a plurality of groups of carrier plates (2) are arranged in sequence 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 adjustment 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.

2. A constant temperature type detection fixture with static electricity removal function according to claim 1, characterized in that: The coil group comprises a coil A (24) and a coil B (241); a transverse slide groove is provided on the carrier plate (2); the coil A (24) is located in the transverse slide 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; a metal ring A (211) is provided on the lower side of the two groups of positioning plates A (21) and is inserted into the transverse slide groove; the two groups of positioning plates A (21) slide in the transverse slide groove; the metal ring A (211) and the coil A (24) are in sliding contact; the metal ring A (211) and the coil A (24) are both electrically connected to a 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 a control system.

3. A constant temperature detection fixture with static electricity removal function according to claim 2, characterized in that: 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), metal rings B (221) are provided on the lower sides of the two groups of positioning plates B (22) 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 a control system; and pressure sensors are installed on both the positioning plate A (21) and the positioning plate B (22).

4. A constant temperature detection fixture with static electricity removal function according to claim 3, characterized in that: The spray pipe (23) is located on one side of the two groups of positioning plates A (21). The spray pipe (23) is composed of an inner tube and an outer tube which 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 two opposite groups of positioning plates A (21). A plurality of spray holes (213) are arranged on the lower side of the inner tube and the outer tube. A check valve is installed in each of the plurality of spray holes (213). The plurality of spray holes (213) are directly opposite to the humidity sensitive resistor (16). A cavity is provided in the carrier plate (2) on the side close to the coil A (24), a cover plate (201) is provided on the upper side of the cavity, the cover plate (201) is arranged on the carrier plate (2), a pressing plate (25) is slidably mounted in the cavity, the pressing plate (25) is connected to the carrier plate (2) via a spring, a plurality of electromagnets (251) are provided on the pressing plate (25) on the side close to the coil A (24), concentrated sulfuric acid is provided between the pressing plate (25) and the carrier plate (2) on the side away from the coil A (24), the plurality of electromagnets (251) are electrically connected to a control system, the inner cylinder and the outer cylinder are connected to the concentrated sulfuric acid via 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.

5. A constant temperature detection fixture with static electricity removal function according to claim 4, characterized in that: The bracket (114) is arranged on the frame (11), 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).

6. A constant temperature type detection fixture with static electricity removal function according to claim 5, 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), the adsorption port being directly opposite to the humidity-sensitive resistor (16). The adsorption plate (3) is connected to the upper side of the conveying cylinder (5) via a pipeline, and the upper side of the conveying cylinder (5) is connected to the evaporation box (31) via a pipeline. The conveying cylinder (5) and the evaporation box (31) are both mounted on a 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.

7. A constant temperature type detection fixture with static electricity removal function according to claim 6, characterized in that: A rotating motor (51) is installed below the conveying cylinder (5). 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).

8. A constant temperature type detection fixture with static electricity removal function according to claim 7, characterized in that: The evaporation box (31) is hollow, a heating wire is arranged on the inner wall of the evaporation box (31), a discharge port is arranged 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.

9. A constant temperature type detection fixture with static electricity removal function according to claim 8, 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), and a sponge is arranged on the lower side of the marking plate (4), and a marking liquid is arranged in the sponge.

10. A constant temperature type detection fixture with static electricity removal function according to claim 9, characterized in that: The conveyor belt (112) is internally meshed with a plurality of rollers (113), the rollers (113) are internally motorized roller structures, the plurality of rollers (113) are mounted on two sets of fixed plates (111), a control panel (1) is provided on the frame (11), a control system is provided in the control panel (1), and the frame (11) is grounded.

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