CN112676196A

CN112676196A - Positive temperature coefficient thermistor resistance detection device

Info

Publication number: CN112676196A
Application number: CN202011422944.XA
Authority: CN
Inventors: 张小丽
Original assignee: Guangzhou Gaohui Network Technology Co ltd
Current assignee: Guangzhou Gaohui Network Technology Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-04-20

Abstract

The invention discloses a positive temperature coefficient thermistor resistance value detection device which comprises a base, wherein a sorting cavity with an upward opening is arranged on the end surface of the top of the base, a sorting and blanking mechanism for sorting qualified products and defective products is arranged in the sorting cavity, a working box is fixedly arranged on the end surface of the top of the base, and a heating working block is fixedly arranged on the end surface of the right side of the working box; according to the invention, real-time monitoring of the resistance value of the thermistor is realized through electromagnetic conversion, the temperature is compared, and the electronic resistance value is intuitively reflected to the outside under the temperature change, so that the outside can quickly and simply observe whether the thermistor can interrupt the expected working effect under the working temperature condition, the thermistor is quickly judged to be qualified or not, after the detection of the thermistor is completed, the reverse sorting of the thermistor is automatically completed, the qualified product falls into the qualified product box, the unqualified product is collected in the unqualified product box, the sorting of the detected thermistor is completed, the speed and the efficiency are high, and the labor cost is saved.

Description

Positive temperature coefficient thermistor resistance detection device

Technical Field

The invention relates to the technical field related to electronic elements, in particular to a positive temperature coefficient thermistor resistance value detection device.

Background

In the thermistor processing production process, the detection is needed, the current detection method generally places the thermistor in a constant-temperature oil tank, and then the detection electrode is held by hands to complete the detection, the detection method is complex, the efficiency is low, the labor cost is high, a full-automatic detection device is also appeared at present, the detection device conveys the thermistor into the constant-temperature oil tank, and then the detection is completed by an automatic detection manipulator, the automatic operation is realized in the process, the efficiency is high, but the full-automatic detection device is high in cost, and is difficult to bear for enterprises with small scales, and the popularization and the application of the full-automatic detection device are limited.

Disclosure of Invention

The invention aims to provide a positive temperature coefficient thermistor resistance value detection device, which solves the problem of complex operation, realizes the visual embodiment of the resistance value change of a thermistor under the temperature change through electromagnetic conversion, and completes the detection of the thermistor and the subsequent sorting.

The invention is realized by the following technical scheme.

The invention relates to a positive temperature coefficient thermistor resistance value detection device, which comprises a base, wherein a sorting cavity with an upward opening is arranged on the top end face of the base, a sorting and blanking mechanism for sorting qualified products and defective products is arranged in the sorting cavity, a working box is fixedly arranged on the top end face of the base, a heating working block is fixedly arranged on the right end face of the working box, a detection mechanism for heating and detecting a thermistor is arranged in the heating working block, a clamping block chute with a rightward opening is arranged on the right end face of the base, an electromagnetic cavity for detecting the magnitude of current is arranged on the inner wall of the left side of the clamping block chute, a judgment cavity is arranged on the inner top wall of the clamping block chute, a judgment mechanism for judging the thermistor coefficient of resistance is arranged in the judgment cavity, a clamping block is arranged in the clamping block chute in a sliding manner, a resistor socket with a rightward opening is, the resistance socket is characterized in that a right-opening push block sliding groove is formed in the inner wall of the left side of the resistance socket, a push block is arranged in the push block sliding groove in a sliding manner, a push block spring fixedly connected with the left-side inner wall of the push block sliding groove is fixedly arranged on the left-side end face of the push block, a first pull rope is fixedly connected with the top end face of the push block, a first rack is fixedly arranged on the left-side end face of the clamping block, a threaded hole is formed in the clamping block in a vertically through manner, a first rack sliding groove with a downward opening is formed in the bottom end face of the clamping block, a first ratchet cavity with a leftward opening is arranged on the inner wall of the right side of the rack sliding groove, a first ratchet shaft is rotatably arranged on the front inner wall and the rear wall of the first ratchet cavity, a first winding wheel and a first ratchet wheel positioned on the rear side of the first winding wheel are fixedly wound on the first winding wheel, the other end of the first pull rope is, the clamping block is characterized in that a motor is fixedly arranged on the top wall in the clamping block sliding groove, a screw rod connected with the bottom wall in the clamping block sliding groove in a rotating fit mode is dynamically connected to the end face of the bottom of the motor, the screw rod penetrates through the threaded hole and is meshed with the threaded hole, a right ratchet cavity with a right opening is arranged on the inner wall on the left side of the clamping block sliding groove, a ratchet shaft II extending backwards is arranged on the inner wall of the ratchet cavity in the front and back in a rotating fit mode, a ratchet wheel II matched with the rack is fixedly arranged on the ratchet shaft II, a belt wheel cavity I is arranged on the inner wall on the rear side of the ratchet cavity I, the ratchet shaft II penetrates through the inner wall of the belt wheel cavity in the front and back in a rotating fit mode and is connected with the belt wheel cavity I.

The electromagnetic cavity is internally provided with an electromagnet, the electromagnet cavity is internally provided with a magnet in magnetic force fit with the electromagnet in a sliding manner, the bottom end face of the magnet is fixedly provided with a magnet spring fixedly connected with the top wall of the electromagnetic cavity, the bottom end face of the magnet is fixedly provided with a magnet push rod extending downwards, the right end face of the magnet push rod is provided with a fixture block chute with a right opening, the fixture block chute is internally provided with a fixture block in a sliding manner, the left end face of the fixture block is fixedly provided with an electromagnetic spring fixedly connected with the left inner wall of the fixture block chute, the bottom wall of the electromagnetic cavity is provided with a right hydraulic cavity with an upward opening, the right hydraulic cavity is internally provided with a right hydraulic plug in a sliding manner, the top end face of the right hydraulic plug is provided with a clamping groove with an upward opening and matched with the fixture block, the bottom wall of the right hydraulic cavity is, the inner bottom wall of the left hydraulic cavity is communicated with the other end of the pipeline, a left hydraulic plug is arranged in the left hydraulic cavity in a sliding mode, and a second pull rope is fixedly connected to the top end face of the left hydraulic plug.

The judging mechanism comprises bilaterally symmetrical lifting blocks arranged in the judging cavity in a sliding manner, a lifting block spring fixedly connected with the bottom wall in the judging cavity is fixedly arranged on the bottom end face of each lifting block, the other end of the pull rope II is fixedly connected to the top end face of the lifting block on the left side, the pull rope III is fixedly connected to the top end face of the lifting block on the right side, a sliding block sliding groove with a forward opening is arranged on the inner wall on the rear side of the judging cavity, a sliding block is arranged in the sliding block sliding groove in a sliding manner, a first transmission shaft extending towards the front side and the rear side is rotatably arranged in the sliding block, a second winding wheel is fixedly arranged on the part, located in the judging cavity, of the first transmission shaft, a fourth pull rope fixedly connected with the end face, facing one side of the second winding wheel, of the lifting block is fixedly wound on, a channel is communicated between the push plate cavity and the sliding block sliding groove, a cam is fixedly arranged on the part of the first transmission shaft penetrating through the channel and extending into the push plate cavity, push plates which are bilaterally symmetrical and are abutted to the cam are slidably arranged in the push plate cavity, a push plate spring fixedly connected with the inner wall of the push plate cavity is fixedly arranged on the end surface of one side of the push plate far away from the center of the first transmission shaft, a fifth pull rope is fixedly connected on the end surface of one side of the push plate close to the center of the first transmission shaft, a rack cavity is arranged on the bottom wall in the push plate cavity, a third rack is slidably arranged in the rack cavity, a rack spring fixedly connected with the inner wall of the rack cavity is fixedly arranged on the end surface of the left side of the third rack, the other end of the fifth pull rope is fixedly connected on the end surface, a third ratchet shaft is rotatably arranged on the front inner wall and the rear inner wall of the rack cavity, and a third ratchet meshed with the rack in three phases and a second belt wheel positioned on the front side of the third ratchet are fixedly arranged on the third ratchet shaft.

Profitable, detection mechanism includes the heating chamber left of opening that is equipped with on the terminal surface of heating work piece left side, the fixed electric plate that is equipped with on the heating intracavity diapire, it is equipped with airtight piston chamber to link up on the heating intracavity roof, airtight piston intracavity slip be equipped with airtight piston and with airtight piston top end fixed connection's airtight piston push rod, fixed be equipped with on the airtight piston top end with airtight piston intracavity wall fixed connection's airtight piston reset spring, fixedly connected with on the airtight piston push rod right side terminal surface the other end of stay cord three.

The sorting and blanking mechanism comprises a sorting cavity with an upward opening formed in the top end face of the sorting cavity, a transmission shaft II extending backwards is arranged on the front inner wall and the rear inner wall of the sorting cavity in a rotating mode, a baffle is fixedly arranged on the transmission shaft II, a qualified product pipeline communicated with an external qualified product box and a unqualified product pipeline positioned on the left side of the qualified product pipeline and communicated with an external unqualified product box are communicated on the bottom wall of the sorting cavity, a belt wheel cavity II is arranged on the inner wall of the rear side of the sorting cavity, a part, extending into the belt wheel cavity II, of the transmission shaft II is fixedly provided with a belt wheel III symmetrical in the front and rear directions, the belt wheel III on the front side is connected with the belt wheel I in a transmission fit mode, and the belt wheel III on the rear side is connected with the belt.

Beneficially, the left side hydraulic pressure intracavity be located the part of left side hydraulic pressure stopper downside with the right side hydraulic pressure intracavity be located the part of right side hydraulic pressure stopper downside and the pipeline intussuseption is full of hydraulic oil, the electro-magnet with the resistance socket passes through the circuit electricity and connects, the motor is connected with external circuit electricity.

The invention has the beneficial effects that: the invention has simple structure and convenient operation, realizes the real-time monitoring of the resistance value of the thermistor through the electromagnetic conversion, compares the temperature, realizes the visual reaction of the electronic resistance value to the outside under the temperature change, enables the outside to quickly and simply observe whether the thermistor can interrupt the expected working effect under the working temperature condition, quickly judges whether the thermistor is qualified or not, automatically finishes the inverse sorting of the thermistor after the detection of the thermistor is finished, enables the qualified product to fall into the qualified product box, collects the unqualified product in the unqualified product box, finishes the sorting of the thermistor after the detection, is quick and efficient, and saves the labor cost.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram at A-A in FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram at B-B in FIG. 2 according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram at C-C in FIG. 1 according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram at D-D in FIG. 1 according to an embodiment of the present invention;

FIG. 6 is an enlarged schematic view of the embodiment of the present invention at E in FIG. 1;

FIG. 7 is an enlarged view of the embodiment of the present invention shown in FIG. 1 at F.

Detailed Description

The invention will now be described in detail with reference to fig. 1-7, wherein for ease of description the orientations described below are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The positive temperature coefficient thermistor resistance value detection device described in connection with the accompanying drawings 1-7 comprises a base 10, a sorting cavity 35 with an upward opening is arranged on the top end face of the base 10, a sorting and blanking mechanism for sorting qualified products and unqualified products is arranged in the sorting cavity 35, a working box 11 is fixedly arranged on the top end face of the base 10, a heating working block 25 is fixedly arranged on the right end face of the working box 11, a detection mechanism for heating and detecting a thermistor is arranged in the heating working block 25, a clamping block sliding chute 31 with a rightward opening is arranged on the right end face of the base 10, an electromagnetic cavity 16 for detecting the magnitude of current is arranged on the inner wall of the left side of the clamping block sliding chute 31, a judgment cavity 21 is arranged on the inner top wall of the clamping block sliding chute 31, a judgment mechanism for judging the thermistor thermal coefficient is arranged in the judgment cavity 21, and a clamping block 70 is, the right end face of the right side of the clamping block 70 is provided with a right resistance socket 81 with an opening, the inner wall of the left side of the resistance socket 81 is provided with a right push block sliding groove 77 with an opening, the push block sliding groove 77 is internally provided with a push block 79 in a sliding manner, the end face of the left side of the push block 79 is fixedly provided with a push block spring 78 fixedly connected with the inner wall of the left side of the push block sliding groove 77, the end face of the top of the push block 79 is fixedly connected with a pull rope I80, the end face of the left side of the clamping block 70 is fixedly provided with a rack I72, the clamping block 70 is internally provided with a threaded hole 71 in a vertically through manner, the end face of the bottom of the clamping block 70 is provided with a rack sliding groove 60 with a downward opening, the inner wall of the right side of the rack sliding groove 60 is provided with a left ratchet cavity I73 with an opening, the front and back inner walls of the ratchet cavity I73 are, the other end of the first pull rope 80 is fixedly wound on the first winding wheel 75, a second rack 24 which is connected with the rack sliding groove 60 in a sliding fit manner and meshed with the first ratchet wheel 74 is fixedly arranged on the inner bottom wall of the clamping block sliding groove 31, a motor 32 is fixedly arranged on the inner top wall of the clamping block sliding groove 31, a screw 33 which is connected with the inner bottom wall of the clamping block sliding groove 31 in a rotating fit manner is dynamically connected onto the end surface of the bottom of the motor 32, the screw 33 penetrates through the threaded hole 71 and is meshed with the threaded hole, a second ratchet wheel cavity 65 with a right opening is arranged on the inner wall on the left side of the clamping block sliding groove 31, a second ratchet shaft 67 which extends backwards is rotatably arranged on the front inner wall and the rear wall of the second ratchet wheel cavity 65, a second ratchet wheel 66 which is matched with the first rack 72 is fixedly arranged on the second ratchet shaft 67, a first belt wheel cavity 68 is arranged on the inner wall on the rear side of the second ratchet wheel cavity 65, and the second, a first belt wheel 69 is fixedly arranged on the part, located in the first belt wheel cavity 68, of the second ratchet shaft 67.

Beneficially, an electromagnet 19 is fixedly arranged on the top wall in the electromagnetic cavity 16, a magnet 18 magnetically matched with the electromagnet 19 is slidably arranged in the electromagnetic cavity 16, a magnet spring 17 fixedly connected with the top wall in the electromagnetic cavity 16 is fixedly arranged on the bottom end face of the magnet 18, a magnet push rod 36 extending downwards is fixedly arranged on the bottom end face of the magnet 18, a fixture block chute 38 with a rightward opening is arranged on the right end face of the magnet push rod 36, a fixture block 82 is slidably arranged in the fixture block chute 38, an electromagnetic spring 83 fixedly connected with the left inner wall of the fixture block chute 38 is fixedly arranged on the left end face of the fixture block 82, a right hydraulic cavity 13 with an upward opening is arranged on the bottom wall in the electromagnetic cavity 16, a right hydraulic plug 62 is slidably arranged in the right hydraulic cavity 13, a clamping groove 61 with an upward opening and matched with the fixture block 82 is arranged on the top end face of, the pipeline 59 is communicated with the bottom wall in the right hydraulic cavity 13, the left hydraulic cavity 12 is arranged on the inner wall of the left side of the right hydraulic cavity 13, the other end of the pipeline 59 is communicated with the bottom wall in the left hydraulic cavity 12, the left hydraulic plug 14 is slidably arranged in the left hydraulic cavity 12, and the second pull rope 15 is fixedly connected to the top end face of the left hydraulic plug 14.

Advantageously, the judging mechanism includes bilaterally symmetrical lifting blocks 20 slidably disposed in the judging cavity 21, a lifting block spring 22 fixedly connected with the bottom wall of the judging cavity 21 is fixedly disposed on the bottom end face of the lifting block 20, the other end of the second pulling rope 15 is fixedly connected to the top end face of the lifting block 20 on the left side, a third pulling rope 23 is fixedly connected to the top end face of the lifting block 20 on the right side, a sliding block sliding groove 44 with a forward opening is disposed on the inner wall on the rear side of the judging cavity 21, a sliding block 43 is slidably disposed in the sliding block sliding groove 44, a first transmission shaft 47 extending to the front side and the rear side is rotatably disposed in the sliding block 43, a second winding wheel 41 is fixedly disposed on the portion of the first transmission shaft 47 located in the judging cavity 21, a fourth pulling rope 42 fixedly connected with the end face of the lifting block 20 facing to the second winding wheel 41 is fixedly wound on the second winding wheel 41, a push plate cavity 50 is arranged on the inner wall of the rear side of the sliding block sliding groove 44, a channel 45 is communicated between the push plate cavity 50 and the sliding block sliding groove 44, a first transmission shaft 47 penetrates through the channel 45, a cam 46 is fixedly arranged on the part, extending into the push plate cavity 50, of the transmission shaft 50, push plates 48 which are bilaterally symmetrical and are abutted to the cam 46 are arranged in the push plate cavity 50 in a sliding mode, a push plate spring 49 fixedly connected with the inner wall of the push plate cavity 50 is fixedly arranged on the end face, far away from the center of the first transmission shaft 47, of each push plate 48, a pull rope five 58 is fixedly connected to the end face, close to the center of the first transmission shaft 47, of each push plate 48, a rack cavity 51 is arranged on the inner bottom wall of the push plate cavity 50, a rack three 53 is arranged in the rack cavity 51 in a sliding mode, a rack spring 52 fixedly connected with the inner wall of the rack cavity 51 is fixedly arranged on the left end face, a third ratchet cavity 54 with an upward opening is formed in the inner bottom wall of the rack cavity 51, a third ratchet shaft 55 is rotatably arranged on the front inner wall and the rear inner wall of the rack cavity 51, and a third ratchet 57 meshed with the third rack 53 and a second belt wheel 56 positioned on the front side of the third ratchet 57 are fixedly arranged on the third ratchet shaft 55.

Beneficially, detection mechanism includes heating chamber 29 that the opening that is equipped with on the terminal surface of heating work piece 25 left side is to the left, fixed electric plate 30 that is equipped with on the diapire in heating chamber 29, it is equipped with airtight piston chamber 27 to link up on the roof in heating chamber 29, slide in airtight piston chamber 27 be equipped with airtight piston 28 and with airtight piston 28 top terminal surface fixed connection's airtight piston push rod 26, fixed be equipped with on the terminal surface of airtight piston 28 top with airtight piston chamber 27 inner wall fixed connection's airtight piston 28 reset spring, fixedly connected with on the terminal surface of airtight piston push rod 26 right side end the other end of three 23 stay cords.

The sorting and blanking mechanism comprises a sorting cavity 35 with an upward opening and arranged on the top end face of the sorting cavity 35, a transmission shaft II 37 extending backwards is arranged on the front inner wall and the rear inner wall of the sorting cavity 35 in a rotating mode, a baffle 34 is fixedly arranged on the transmission shaft II 37, a qualified product pipeline 39 communicated with an external qualified product box and a unqualified product pipeline 40 positioned on the left side of the qualified product pipeline 39 and communicated with an external unqualified product box are communicated on the bottom wall in the sorting cavity 35, a belt wheel cavity II 64 is arranged on the inner wall on the rear side of the sorting cavity 35, a part, extending into the belt wheel cavity II 64, of the transmission shaft II 37 is fixedly provided with a belt wheel III 63 which is symmetrical front and rear, the belt wheel III 63 on the front side is in matched and connected with the belt wheel I69 through a transmission belt, and the belt wheel III 63 on the rear side is in.

Advantageously, the part of the left hydraulic chamber 12 located on the lower side of the left hydraulic plug 14, the part of the right hydraulic chamber 13 located on the lower side of the right hydraulic plug 62, and the pipeline 59 are filled with hydraulic oil, the electromagnet 19 is electrically connected to the resistor socket 81 through a circuit, and the motor 32 is electrically connected to an external circuit.

In an initial state, the magnet 18 is located at an upper limit position under the action of the magnet spring 17, the right hydraulic plug 62 is located at a lower limit position, the left hydraulic plug 14 is located at an upper limit position, the latch 82 is located at a left limit position under the action of the electromagnetic spring 83, the push block 79 is located at a left limit position under the action of the push block spring 78, the lifting block 20 is located at a lower limit position under the action of the lifting block spring 22, the airtight piston 28 is located at a lower limit position under the action of the return spring of the airtight piston 28, the push plate 48 abuts against the cam 46 under the action of the push plate spring 49, the pulley three 63 is located at a left limit position under the action of the rack spring 52, and the baffle 34 swings to abut against the inner wall of the left side of the sorting cavity 35.

When the device works, the thermistor is inserted into the resistor socket 81, an external circuit is started to electrify the motor 32, the motor 32 drives the screw rod 33 to rotate forward, so that the clamping block 70 moves upwards under the action of the screw rod 33 and the threaded hole 71, the clamping block 70 moves to the upper limit position, when the clamping block 70 moves to the upper limit position, the clamping block 70 seals the heating cavity 29, the resistor is electrified, the electromagnet 19 works to push the magnet 18 to move downwards through magnetic force, so that the magnet push rod 36 moves downwards to extend into the clamping groove 61, the electromagnetic spring 83 works, the clamping block 82 moves rightwards under the action of the electromagnetic spring 83 to extend into the clamping groove 61 to abut against the right hydraulic plug 62, the electric heating plate 30 heats air and resistors in the heating cavity 29, the air in the heating cavity 29 is heated to expand to push the airtight piston 28 and the airtight piston push rod 26 to move upwards to tension the pull rope III 23, and the resistors are heated to reduce the current in, so that the magnetic force of the electromagnet 19 is reduced, the magnet 18 moves upwards under the action of the magnet spring 17 to drive the right hydraulic plug 62 to move upwards to extract hydraulic oil, the hydraulic oil in the left hydraulic cavity 12 enters the right hydraulic cavity 13, the left hydraulic plug 14 moves downwards to tension the second pull rope 15, the second pull rope 15 is tensioned to drive the lifting block 20 on the left side to move upwards, the third pull rope 23 is tensioned to drive the lifting block 20 on the right side to move upwards, when the upward displacement rates of the left lifting block 20 and the right lifting block 20 are the same, the resistance detection is qualified, when the upward displacement rates of the lifting blocks 20 are different, the fourth pull rope 42 is pulled to drive the second winding wheel 41 to rotate, so as to drive the cam 46 coaxial with the second winding wheel 41 to rotate to push the push plate 48 to tension the fifth pull rope 58, the fifth pull rope 58 is tensioned to drive the third rack 53 to move rightwards to drive the third ratchet 57 meshed with the third, thereby driving the third belt wheel 63 to rotate, and enabling the baffle 34 coaxial with the third belt wheel 63 to swing rightwards to be abutted against the inner wall of the right side of the sorting cavity 35;

after the detection is finished, the motor 32 drives the screw 33 to rotate reversely, so that the clamping block 70 is moved downwards to close the heating cavity 29, the airtight piston 28 is reset downwards under the action of a return spring of the airtight piston 28 to release the pull rope III 23, the electric heating plate 30 stops working and cools the heating cavity 29, the clamping block 70 is moved downwards to enable the rack II 24 to be meshed with the ratchet wheel I74, so that the ratchet wheel I74 is driven to rotate, a winding wheel I75 coaxial with the ratchet wheel I74 is driven to tension the pull rope I80, the push block 79 is moved rightwards to push the resistor to move rightwards to fall into the sorting cavity 35, if the resistor is detected to be a qualified product, the baffle 34 is abutted against the inner wall on the left side of the sorting cavity 35, so that the resistor falls into the qualified product pipeline 39 if the resistor is detected to be unqualified, and the baffle 34 is abutted against the inner wall on;

and a new resistor to be detected is inserted again, the detection action is repeated, when the clamping block 70 moves upwards, the first rack 72 is meshed with the second ratchet 66 to drive the second ratchet 66 to rotate, so that the first belt wheel 69 coaxial with the second ratchet 66 rotates, the first belt wheel 69 rotates to drive the third belt wheel 63 to rotate, the baffle 34 swings leftwards to abut against the inner wall of the left side of the sorting cavity 35, if the baffle 34 abuts against the inner wall of the left side of the sorting cavity 35, the first belt wheel 69 idles, when the electromagnet 19 is electrified, the magnet push rod 36 moves downwards to push the right hydraulic plug 62 to move downwards to return to the initial position, so that the left hydraulic plug 14 moves upwards to return, the lifting block 20 returns by releasing the second pull rope 15 and the third pull rope 23, so that the push plate 48 returns under the action of the push plate spring 49 to release the five pull ropes 58, the third rack 53 returns under the action of.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a positive temperature coefficient thermistor resistance detection device, includes the base, its characterized in that: the automatic sorting device is characterized in that a sorting cavity with an upward opening is formed in the end face of the top of the base, a sorting and blanking mechanism for sorting qualified products and defective products is arranged in the sorting cavity, a working box is fixedly arranged on the end face of the top of the base, a heating working block is fixedly arranged on the end face of the right side of the working box, a detection mechanism for heating and detecting a thermistor is arranged in the heating working block, a clamping block sliding groove with a rightward opening is formed in the end face of the right side of the base, an electromagnetic cavity for detecting the magnitude of current is formed in the inner wall of the left side of the clamping block sliding groove, a judgment cavity is formed in the inner top wall of the clamping block sliding groove; the clamping block is internally provided with a clamping block in a sliding way, a right-opening resistance socket is arranged on the end face of the right side of the clamping block, a right-opening push block sliding way is arranged on the inner wall of the left side of the resistance socket, a push block is arranged in the push block sliding way, a push block spring fixedly connected with the inner wall of the left side of the push block sliding way is fixedly arranged on the end face of the left side of the push block, a pull rope I is fixedly connected with the end face of the top of the push block, a rack I is fixedly arranged on the end face of the left side of the clamping block, a threaded hole is vertically communicated in the clamping block, a downward-opening rack sliding way is arranged on the end face of the bottom of the clamping block, a left-opening ratchet cavity I is arranged on the inner wall of the right side of the rack sliding way, a ratchet shaft I is rotatably arranged on the front and rear inner walls of, the other end of the first pull rope is fixedly wound on the first winding wheel, a second rack which is connected with the rack chute in a sliding fit manner and meshed with the first ratchet wheel is fixedly arranged on the inner bottom wall of the clamping block chute, a motor is fixedly arranged on the inner top wall of the clamping block sliding groove, a screw rod which is in rotating fit connection with the inner bottom wall of the clamping block sliding groove is dynamically connected on the end surface of the bottom of the motor, the screw rod penetrates through the threaded hole and is meshed with the threaded hole, a ratchet cavity II with a right opening is arranged on the inner wall of the left side of the clamping block sliding groove, a second ratchet shaft extending backwards is rotatably arranged on the front inner wall and the rear inner wall of the second ratchet cavity, a second ratchet matched with the first rack is fixedly arranged on the second ratchet shaft, a first belt wheel cavity is formed in the inner wall of the rear side of the second ratchet wheel cavity, the second ratchet wheel shaft penetrates through the front inner wall and the rear inner wall of the first belt wheel cavity and is connected with the first belt wheel cavity in a rotating matching mode, and a first belt wheel is fixedly arranged on the portion, located in the first belt wheel cavity, of the second ratchet wheel shaft.

2. The device for detecting the resistance of a positive temperature coefficient thermistor according to claim 1, wherein: an electromagnet is fixedly arranged on the top wall in the electromagnetic cavity, a magnet which is in magnetic force fit with the electromagnet is arranged in the electromagnetic cavity in a sliding manner, a magnet spring which is fixedly connected with the top wall in the electromagnetic cavity is fixedly arranged on the bottom end face of the magnet, a magnet push rod which extends downwards is fixedly arranged on the bottom end face of the magnet, a fixture block chute with a right opening is arranged on the end face of the right side of the magnet push rod, a fixture block is arranged in the fixture block chute in a sliding manner, an electromagnetic spring which is fixedly connected with the left side inner wall of the fixture block chute is fixedly arranged on the end face of the left side of the fixture block, a right hydraulic plug is arranged in the electromagnetic cavity, a clamping groove with an upward opening and matched with the fixture block is arranged on the end face of the top of the right hydraulic, the inner bottom wall of the left hydraulic cavity is communicated with the other end of the pipeline, a left hydraulic plug is arranged in the left hydraulic cavity in a sliding mode, and a second pull rope is fixedly connected to the top end face of the left hydraulic plug.

3. The device for detecting the resistance of a positive temperature coefficient thermistor according to claim 1, wherein: the judging mechanism comprises bilaterally symmetrical lifting blocks arranged in the judging cavity in a sliding manner, a lifting block spring fixedly connected with the bottom wall in the judging cavity is fixedly arranged on the bottom end face of each lifting block, the other end of the pull rope II is fixedly connected to the top end face of the lifting block on the left side, the pull rope III is fixedly connected to the top end face of the lifting block on the right side, a sliding block sliding groove with a forward opening is arranged on the inner wall on the rear side of the judging cavity, a sliding block is arranged in the sliding block sliding groove in a sliding manner, a first transmission shaft extending towards the front side and the rear side is rotatably arranged in the sliding block, a second winding wheel is fixedly arranged on the part, located in the judging cavity, of the first transmission shaft, a fourth pull rope fixedly connected with the end face, facing one side of the second winding wheel, of the lifting block is fixedly, a channel is communicated between the push plate cavity and the sliding block sliding groove, a cam is fixedly arranged on the part of the first transmission shaft penetrating through the channel and extending into the push plate cavity, push plates which are bilaterally symmetrical and are abutted to the cam are slidably arranged in the push plate cavity, a push plate spring fixedly connected with the inner wall of the push plate cavity is fixedly arranged on the end surface of one side of the push plate far away from the center of the first transmission shaft, a fifth pull rope is fixedly connected on the end surface of one side of the push plate close to the center of the first transmission shaft, a rack cavity is arranged on the bottom wall in the push plate cavity, a third rack is slidably arranged in the rack cavity, a rack spring fixedly connected with the inner wall of the rack cavity is fixedly arranged on the end surface of the left side of the third rack, the other end of the fifth pull rope is fixedly connected on the end surface, a third ratchet shaft is rotatably arranged on the front inner wall and the rear inner wall of the rack cavity, and a third ratchet meshed with the rack in three phases and a second belt wheel positioned on the front side of the third ratchet are fixedly arranged on the third ratchet shaft.

4. The device for detecting the resistance of a positive temperature coefficient thermistor according to claim 1, wherein: detection mechanism includes the heating chamber left of opening that is equipped with on the terminal surface of heating work piece left side, the fixed electric plate that is equipped with on the heating intracavity diapire, it is equipped with airtight piston chamber to link up on the heating intracavity roof, airtight piston intracavity slide be equipped with airtight piston and with airtight piston top end fixed connection's airtight piston push rod, airtight piston top end is gone up fixed be equipped with airtight piston intracavity wall fixed connection's airtight piston reset spring, fixedly connected with on the airtight piston push rod right side terminal surface the other end of stay cord three.

5. The device for detecting the resistance of a positive temperature coefficient thermistor according to claim 1, wherein: the sorting and blanking mechanism comprises a sorting cavity with an upward opening formed in the top end face of the sorting cavity, a transmission shaft II extending backwards is arranged on the inner wall of the sorting cavity in a rotating mode, a baffle is fixedly arranged on the transmission shaft II, a qualified product pipeline communicated with an external qualified product box and a unqualified product pipeline positioned on the left side of the qualified product pipeline and communicated with an external unqualified product box are communicated on the bottom wall of the sorting cavity, a belt wheel cavity II is arranged on the inner wall of the rear side of the sorting cavity, a belt wheel III symmetrical in the front and back is fixedly arranged on the part, extending into the belt wheel cavity II, of the transmission shaft II, the belt wheel III on the front side is connected with the belt wheel I in a transmission fit mode, and the belt wheel III on the rear side is connected with the belt wheel II in a transmission.

6. The device for detecting the resistance of a positive temperature coefficient thermistor according to claim 1, wherein: the left side hydraulic pressure intracavity is located the part of left side hydraulic pressure stopper downside with the right side hydraulic pressure intracavity is located the part of right side hydraulic pressure stopper downside and the pipeline intussuseption is full of hydraulic oil, the electro-magnet with the resistance socket passes through the circuit electricity and connects, the motor is connected with the external circuit electricity.