CN112691935A - Automatic system for nut detection and working method thereof - Google Patents

Automatic system for nut detection and working method thereof Download PDF

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Publication number
CN112691935A
CN112691935A CN202011410556.XA CN202011410556A CN112691935A CN 112691935 A CN112691935 A CN 112691935A CN 202011410556 A CN202011410556 A CN 202011410556A CN 112691935 A CN112691935 A CN 112691935A
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CN
China
Prior art keywords
nut
controller
baffle
bottom plate
cylinder
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Granted
Application number
CN202011410556.XA
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Chinese (zh)
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CN112691935B (en
Inventor
韩雪
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Taicang Chaoyi Screw Industry Co ltd
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Xuzhou Danyi Engineering Technology Co ltd
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Priority to CN202011410556.XA priority Critical patent/CN112691935B/en
Publication of CN112691935A publication Critical patent/CN112691935A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/36—Sorting apparatus characterised by the means used for distribution
    • B07C5/38—Collecting or arranging articles in groups
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts

Abstract

The invention discloses an automatic system for nut detection and a working method thereof, wherein the automatic system comprises a bottom plate, one side of the bottom plate is fixedly connected with a vertical plate, a motor is arranged on the bottom plate, a check stud is arranged on an output shaft of the motor, one end of the check stud, which is far away from the motor, is provided with a baffle plate, the baffle plate is provided with an avoidance hole matched with the check stud, at least one end of the baffle plate is fixedly connected with the bottom plate through a fixing plate, two sides of the baffle plate are respectively provided with a positioning plate, and a touch switch is arranged on the positioning plates.

Description

Automatic system for nut detection and working method thereof
Technical Field
The invention relates to the technical field of screw tooth inspection supplies, in particular to an automatic system for nut detection and a working method thereof.
Background
For nuts in some precision industries, the production precision of the nuts needs to be relatively high, after the nuts are produced, the threads of the nuts need to be checked so as to be normally used, most of the existing checking modes need manual operation, the nuts need to be manually meshed with a checking stud during checking, the nuts need to be manually taken down after the checking is finished, the mode is relatively clumsy and low in efficiency, if an automatic system can automatically feed the nuts, the nuts can be automatically taken down after the checking is finished, the nuts can be classified according to the checking condition, and the checking efficiency is greatly improved.
Disclosure of Invention
The invention aims to provide an automatic system for nut detection and a working method thereof, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an automatic system for nut detection and a working method thereof comprise a bottom plate, wherein the lower end of the bottom plate is fixedly connected with a supporting leg, one side of the bottom plate is fixedly connected with a vertical plate, a motor is arranged on the bottom plate, a check stud is arranged on an output shaft of the motor, one end of the check stud, which is far away from the motor, is provided with a baffle plate, the baffle plate is provided with a avoidance hole matched with the check stud, at least one end of the baffle plate is fixedly connected with the bottom plate through a fixing plate, two ends of the baffle plate are both connected with a slide rod in a sliding manner, two ends of the slide rod are both fixedly connected with the bottom plate through the fixing plate, two ends of the baffle plate are both connected with the fixing plate close to one side of the motor through a friction spring, two sides of the baffle plate are both provided with a positioning plate, the positioning, the bottom plate is provided with a controller. The utility model discloses a check bolt, including riser, material rack, connecting rod and material rack, material rack has the material rack, the lateral wall of riser passes through supporting platform and installs the material loading cylinder, fixedly connected with bracing piece on the lateral wall of riser, sliding connection has the work or material rest on the bracing piece, the piston rod of material loading cylinder passes through connecting rod and work or material rest interconnect, open on the work or material rest have with wait to examine nut shape size assorted silo, it has the discharge gate to open on the lateral wall that the work or material.
Preferably, the lower extreme extension line direction of silo and the contained angle of gravity direction are the acute angle, just the contained angle is 90 degrees between the direction of silo and the check-up double-screw bolt, just the lower extreme fixedly connected with supporting leg of bottom plate, the supporting leg makes the whole slope to work or material rest one side of structure.
Preferably, the piston rod is inserted in the moving cavity of the connecting rod in a sliding mode, a micro spring is arranged between the piston rod and the moving cavity, the right end of the piston rod is attached to the side wall of the moving cavity under the action of the micro spring, and a micro switch is arranged on the bottom plate.
Preferably, the lower end surface of the bottom plate is connected with a material distributing plate through a clamping block in a sliding mode, a material distributing cylinder is installed on the lower end surface of the bottom plate, an output rod of the material distributing cylinder is fixedly connected with the material distributing plate, and a first material box and a second material box are arranged below the bottom plate.
Preferably, the side face of the lower end of the trough is provided with a removing opening, an included angle between the removing opening and the trough is 90 degrees, the direction of the removing opening is inclined upwards relative to the gravity direction, and the side face of the material rack is provided with a removing cylinder which is used for driving a removing rod penetrating through the removing opening.
Preferably, the both ends of baffle all with slide bar sliding connection, the both ends of slide bar all through fixed plate and bottom plate fixed connection, the both ends of baffle all through friction spring and the fixed plate interconnect who is close to motor one side.
Preferably, install material returned cylinder on the shell of motor, just material returned cylinder drive material returned pole runs through and dodges the nut contact of hole and test.
The working method of the automation system for nut detection is characterized by comprising the following processes:
s1, initializing the system;
s2, driving the feeding cylinder to move towards the direction close to the baffle by the controller;
s3, the to-be-tested nut extrudes the baffle plate to enable the second touch switch and the baffle plate to be separated from the trigger signal and feed back to the controller, and the controller records the time T at the momentaAnd drives the motor to rotate in the positive direction;
when the time reaches Ta+T2If so, the controller does not receive the microswitch signal, and the step is S31, otherwise, the step is S4;
s31, the controller drives the feeding cylinder to reset, drives the removing cylinder to drive the removing rod to extend and retract once, and then the operation goes to S9;
s4, the nut to be tested pushes the baffle plate to trigger the microswitch to controlThe device acquires the signal and records the time Tb；
S5, the controller makes the feeding cylinder move rightwards, and makes logic judgment, when the time reaches Tb+T1If the controller has not received the signal of the first touch switch, the process proceeds to step S51, otherwise, the process proceeds to step S6;
s51, controlling the check stud to rotate reversely;
s52, the controller controls the material distributing cylinder to move towards the second material box to collect the nuts to be tested, and then the nut to be tested enters S9;
s6, triggering a first touch switch by a baffle, and receiving a signal by a controller;
s7, driving a motor to drive a check stud to rotate reversely by a controller;
s8, the controller drives the material distributing cylinder to keep an initial state, and the first material box collects the nuts to be tested;
and S9, triggering a second touch switch by the baffle, acquiring a signal by the controller, and returning the system initialization to S1.
Preferably, a step S511 is further set between S51 and S52, and the controller drives the material returning cylinder to drive the material returning rod to move outwards
Compared with the prior art, the invention has the beneficial effects that: the nut automatic feeding device is provided with the material rest, the position of the material rest is controlled through the feeding air cylinder, automatic feeding is achieved, and the situation that after one nut is inspected, the nut falling is not influenced by the position of the material rest is guaranteed; the system is provided with the material distribution plate, the position of the material distribution plate is controlled through the material distribution cylinder, and the nuts which are not good products can be separated and dropped into different material boxes to be classified correspondingly.
Drawings
FIG. 1 is a schematic diagram I of the overall structure of the present invention;
FIG. 2 is a schematic diagram II of the overall structure of the present invention;
FIG. 3 is a front view of the present invention;
fig. 4 is a schematic view of a partial cross-sectional structure of the material holder of the present invention;
FIG. 5 is an enlarged view of portion A of FIG. 2 according to the present invention;
FIG. 6 is a top view of the present invention;
FIG. 7 is a side view of the present invention after the material distribution plate has been moved;
FIG. 8 is a schematic view of the present invention with the cylinder removed;
FIG. 9 is a schematic view of a rack with a removal opening according to the present invention;
FIG. 10 is a block diagram of the invention at a third headbox;
FIG. 11 is a side view of the present invention;
FIG. 12 is a schematic view of the structure of the present invention in which one end of the baffle is connected to the fixing plate;
fig. 13 is a schematic sectional view of the moving chamber of the present invention.
In the figure: 1. the automatic material feeding device comprises a base plate, 2, a vertical plate, 3, a motor, 4, an output shaft, 5, a check stud, 6, a baffle, 7, a sliding rod, 8, a fixing plate, 9, an avoidance hole, 10, a friction spring, 11, a positioning plate, 12, a locking nut, 13, a controller, 14, a supporting platform, 15, a feeding cylinder, 1501, a piston rod, 16, a supporting rod, 17, a material rack, 18, a connecting rod, 19, a material groove, 20, a material outlet, 21, a supporting leg, 22, a clamping block, 23, a material distributing plate, 24, a material distributing cylinder, 25, a first material box, 26, a second material box, 27, a first touch switch, 28, a second touch switch, 29, a micro-motion spring, 30, a moving cavity, 31, a removing opening, 32, a removing cylinder, 33, a removing rod, 34, a material returning cylinder, 35, a material returning rod, 36, a micro-motion switch.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-13, the present invention provides a technical solution: an automatic system for nut detection and a working method thereof comprise a bottom plate 1, wherein a supporting leg 21 is fixedly connected with the lower end of the bottom plate 1, a vertical plate 2 is fixedly connected with one side of the bottom plate 1, a motor 3 is installed on the bottom plate 1, a check stud 5 is installed on an output shaft 4 of the motor 3, the check stud 5 can detect screw threads on a nut to be detected, when the nut can smoothly rotate on the check stud 5, the screw threads of the nut are intact, the check stud 5 can be replaced according to the type of the nut batch of actual test, a baffle 6 is arranged at one end, away from the motor 3, of the check stud 5, an avoiding hole 9 matched with the check stud 5 is formed in the baffle 6, the check stud 5 can pass through the avoiding hole 9 to detect the nut on the other side, at least one end of the baffle 6 is fixedly connected with the bottom plate 1 through a fixing plate 8, as shown in fig. 12, the material of baffle 6 can adopt the material that elasticity is better under this kind of mode, when detecting, will wait to detect the nut and hug closely with check-up double-screw bolt 5, then let check-up double-screw bolt 5 rotatory thereby can let the screw thread meshing on nut and the check-up double-screw bolt 5, and along with the rotation of check-up double-screw bolt 5, thereby the nut can be closer to motor 3 and extrude baffle 6, thereby baffle 6 deformation hugs closely the nut frictional force between the increase, let the nut can keep the gesture can not idle along with check-up double-screw bolt 5, the operator observes the nut and can mesh the removal back on check-up double-screw bolt 5 smoothly, let motor 3 reversal this moment at the effect is hugged closely to the elasticity of baffle 6 the nut can outwards move relatively to.
In addition, because the baffle 6 is connected with the bottom plate 1 by only one end and the bending is moved towards one end, the baffle 6 is required to have good elasticity and stability, and the stress of the contact surface between the screw teeth and the nut is not balanced when the screw teeth are deformed, so that the stress of the direct engagement of the screw teeth is not uniform, the screw is easy to fall off, therefore, both ends of the baffle 6 are connected with the sliding rod 7 in a sliding way, both ends of the sliding rod 7 are fixedly connected with the bottom plate 1 through the fixing plate 8, both ends of the baffle 6 are connected with a fixing plate 8 at one side close to the motor 3 through a friction spring 10, as shown in figure 1, when the check stud 5 is meshed with the nut to rotate, the nut pushes the baffle 6 to slide towards the left side along the slide rod 7, the friction spring 10 pushes the baffle 6 towards the right side, the two ends of the baffle 6 are stressed in a balanced manner, therefore, the condition that the meshing of the screw threads of the nut on the check stud 5 is unstable due to uneven stress can be avoided.
In addition, in order to increase the degree of automation, two sides of the baffle 6 are respectively provided with a positioning plate 11, the positioning plates 11 are fixedly connected with the bottom plate 1, a first touch switch 27 and a second touch switch 28 are respectively mounted on the two positioning plates 11, a controller 13 is mounted on the bottom plate 1, and the controller 13 is electrically connected with the first touch switch 27 and the second touch switch 28 and controls the operation of the motor 3;
in order to realize automatic feeding, a material rest 17 is provided, specifically, a feeding cylinder 15 is mounted on the side wall of the vertical plate 2 through a supporting platform 14, the feeding cylinder 15 is also electrically connected with a controller 13, a supporting rod 16 is fixedly connected to the side wall of the vertical plate 2, the material rest 17 is slidably connected to the supporting rod 16, a piston rod 1501 of the feeding cylinder 15 is connected with the material rest 17 through a connecting rod 18, a material groove 19 matched with the shape and size of a nut to be inspected is formed in the material rest 17, the nut can be sequentially placed into the material groove 19, the nuts are vertically arranged in the material groove 19 and slide downwards by gravity, a discharge port 20 is formed in the side wall of the material rest 17 close to the checking stud 5, the material taking direction of the discharge port 20 is 90 degrees with the material groove 19, the checking stud 5 can extend into the material groove 19 through the discharge port 20 and is contacted with the nut at the lowest end in the material groove 19, when the material rack 17 moves leftwards, the side wall of the nut to be tested positioned at the discharge hole 20 extrudes the baffle 6 to deform and yield the baffle and then contacts the check stud 5, so that the baffle 6 initially provides a certain elastic force;
particularly, silo 19's lower extreme extension line direction is the acute angle with the contained angle of gravity direction, just contained angle is 90 degrees between 19's direction of silo and the check-up double-screw bolt 5, just the lower extreme fixedly connected with supporting leg 21 of bottom plate 1, supporting leg 21 makes the whole 17 lopsidedness of work or material rest of structure, as shown in fig. 3, the angle of slope can avoid the nut to directly fall out from discharge gate 20, when making things convenient for check-up double-screw bolt 5 to remove the contact nut, can let the nut that awaits measuring rely on gravity whereabouts, realizes automatic feeding.
When the nut is meshed with the check stud 5, the thread is smoothly meshed according to a certain direction, but the contact between the check stud 5 and the nut to be tested cannot ensure that the thread opening can be aligned exactly, so when the loading cylinder 15 moves to drive the nut to be tested to contact with the check stud 5, the stroke of the loading cylinder 15 can slightly change, in order to avoid rigid collision damage between components, the tight contact between the nut to be tested and the check stud 5 can be kept (the tight contact can keep certain stability of the nut to be tested and avoid idling following the check stud 5 when the thread opening changes from being misaligned to the stroke when the check stud 5 rotates to align with the thread opening (and before the thread opening is separated from the material frame 17) all the time, and particularly, the piston rod 1501 is inserted into the moving cavity 30 of the connecting rod 18 in a sliding mode, and a micro spring 29 is arranged between the two. When the piston rod 1501 moves leftwards as shown in fig. 13, the micro spring 29 drives the connecting rod 18 to move the rack 17 leftwards, and the existence of the micro spring 29 can stably maintain that the rack 17 drives the nut to be tested therein to have a force always leftwards, so that the displacement difference generated by the movement of the check stud 5 in the meshing process with the nut to be tested is compensated.
In addition, in order to enable the rack 17 to move away after the nut to be tested is meshed with the check stud 5 to a certain degree, the automation speed is improved, the detection speed is accelerated, the right end of the piston rod 1501 is attached to the side wall of the moving cavity 30 under the action of the micro spring 29, the micro switch 36 is arranged on the bottom plate 1, the micro switch 36 is electrically connected with the controller 13, when the baffle 6 is triggered above the micro switch 36, and the micro switch 36 is triggered by the installation position design of the micro switch 36, a certain meshing performance is achieved between the check stud 5 and the nut to be tested, namely the check stud 5 and the screw thread of the nut to be tested are meshed for a certain number of turns (such as 3 turns, the fact that the check stud 5 and the nut to be tested can be kept meshed without being easily disengaged from each other at the moment), the sizes of nuts of different models are different.
In the process of manufacturing the nut, due to some reason, the position of a screw opening may not be processed, the nut cannot be meshed with the check stud 5 at the beginning, and in the situation, the nut to be tested cannot be smoothly meshed and taken out by the check stud 5, so that discharging cannot be carried out, and the automatic operation of the whole system is stopped. Therefore, the side surface of the lower end of the trough 19 is provided with a removing opening 31, an included angle between the removing opening 31 and the trough 19 is 90 degrees, and the direction of the removing opening 31 is inclined upwards relative to the gravity direction (as shown in fig. 11), so that the nuts to be tested can still be kept in the trough 19 and not fall outside after falling down smoothly by gravity, the nuts which are not meshed with the checking studs 5 in the initial situation with problems of some screw threads are not good, in order to automatically reject the nuts, the side surface of the material frame 17 is provided with a removing cylinder 32, the removing cylinder 32 is used for driving a removing rod 33 penetrating through the removing opening 31, the removing cylinder 32 is also electrically connected with the controller 13 to be controlled, and when the nuts cannot be meshed with the checking studs 5 in the initial stage, the removing cylinder 32 drives the removing rod 33 to push the nuts to be rejected from the removing opening 31.
In addition, the nut thread that awaits measuring probably appears damaging because of some reason, and it is tighter to mesh with check double-screw bolt 5 under the effect of baffle 6, can't break away from through the reversal of check double-screw bolt 5, and the accessible sets up material returned pole 35 this moment and solves, particularly, install material returned cylinder 34 on the shell of motor 3, just material returned cylinder 34 drive material returned pole 35 runs through the nut contact of dodging hole 9 and test, gives this nut through the reversal of outside pushing and check double-screw bolt 5 and pushes away.
In order to realize automatic classification of good and damaged nuts, a material distribution plate 23 is arranged, specifically, the lower end surface of the bottom plate 1 is slidably connected with the material distribution plate 23 through a fixture block 22, a material distribution cylinder 24 is installed on the lower end surface of the bottom plate 1, the material distribution cylinder 24 is electrically connected with the controller 13, an output rod of the material distribution cylinder 24 is fixedly connected with the material distribution plate 23, a first material box 25 and a second material box 26 are arranged below the bottom plate 1, when the material distribution plate 23 is retracted, the detected good nuts can fall into the first material box 25, and when the material distribution plate 23 extends out, the detected damaged nuts can fall into the second material box 26;
first touch switch 27 runs through locating plate 11, and the both sides of locating plate 11 all are equipped with lock nut 12, and lock nut 12 is connected with first touch switch 27 meshing, and lock nut 12 through adjusting the both sides of locating plate 11 alright adjust the distance of first touch switch 27 and baffle 6 to can adjust the meshing distance of nut on check-up double-screw bolt 5, so that detect different length nuts.
Before work, nuts to be detected are placed in the material rack 17, then a main switch arranged on the vertical plate 2 is started, in an initial state, the right side of the baffle 6 is in contact with a second touch switch 28, and the position of the material distribution plate 23 is located at a position corresponding to the position of the first material box 25. In order to realize automatic identification, judgment and classified storage, the working method of the automatic system for nut detection comprises the following procedures,
s1, starting a master switch, initializing the controller 13, positioning the distributing plate 23 at a position corresponding to the first material box 25, and receiving data information transmitted by each switch by the controller 13;
s2, the controller 13 drives the feeding cylinder 15 to drive the material rack 17 to move leftwards, so that the nut to be tested at the bottom of the material groove 19 extrudes the baffle 6 and then contacts the check stud 5;
s3, feeding back a trigger signal for separating the second touch switch 28 from the baffle 6 to the controller 13, and driving the motor 3 to rotate in the positive direction by the controller 13 to enable the checking stud 5 to be meshed with the nut to be tested;
s4, with the meshing of the check stud 5 and the nut to be tested, the rack 17 continues to move leftwards under the action of the micro spring 29, so that the nut to be tested at the bottom pushes the baffle 6 to trigger the micro switch 36, and the controller 13 acquires the signal;
s5, the controller 13 enables the feeding cylinder 15 to move rightwards, so that the nut to be measured at the bottom is separated from the trough 19, and the motor 3 continues to rotate forwards;
s6, the baffle 6 pushes the nut to be tested to keep a certain friction force, so that the nut to be tested is meshed with the check stud 5, the baffle 6 is further pushed to move leftwards, when the baffle 6 triggers the first touch switch 27, the thread tooth of the nut to be tested is intact, and at the moment, the thread can be withdrawn;
s7, the controller 13 acquires a signal of the first touch switch 27, drives the motor 3 to drive the check stud 5 to rotate reversely, and under the extrusion action of the baffle 6, the check stud 5 and the nut to be tested rotate relatively, so that the nut to be tested is withdrawn;
s8, the controller 13 controls the material separating cylinder 24 not to act, so that the first material box 25 is used for collecting qualified nuts to be tested;
s9, the baffle 6 is reset to trigger the second touch switch 28 again, the signal is transmitted to the controller 13, and the controller 13 initializes, i.e. completes the calibration process of the nut to be tested.
When the thread of the nut to be tested is encountered and problems occur, the nut cannot be smoothly meshed with the check stud 5 in the meshing process, so that the situation that the nut cannot reach S6 may exist after the step S5, at the moment, the nut to be tested overcomes the friction force given by the baffle 6 due to the thread problem and the check stud 5 is clamped, the nut to be tested always rotates along with the check stud 5, and in order to automatically recognize the situation, the trigger time (namely the time T) of the micro switch 36 can be utilizedb) The identification is carried out by determining the distance (distance time T) between the first touch switch 27 and the actuation of the first touch switch 27, since the thread size on the check stud 5 is known and the rotational speed of the check stud 5 is knownbThe time used) is known, and the interval time is set to T, and is slightly extended to avoid erroneous determination in consideration of some tolerance problems, for example, the calculated interval time is 0.5s, and the tolerance time is 0.1s, and 0.6s is used as the check time T of the controller 131If T is reached after the microswitch 36 has been triggered1After the preset time T, the first touch switch 27 is still not triggered, and the controller 13 controls the check stud 5 to rotate reversely to withdraw the wire, in step S51, when the controller 13 exceeds the preset time Tb+T1The signal of the first touch switch 27 is not received yet, and at this time, the check stud 5 is controlled to rotate reversely; after the step S51, the process goes to step S52, the controller 13 controls the material distributing cylinder 24 to move, so that the material distributing plate 23 moves outwards, the dropped nuts to be tested can enter the second material box 26 along the material distributing plate 23 for centralized collection, and then the system goes to step S9.
In addition, because the thread of the nut to be tested has a problem, the situation that the thread cannot be smoothly taken off may be caused, at this time, the material returning cylinder 34 may be started, and when the material returning rod 35 additionally applies a thrust force to the side wall of the nut to be tested, so as to stabilize the nut to be tested, and the nut to be tested and the check stud 5 are prevented from rotating together during the thread returning process, that is, in step S511, the controller 13 drives the material returning cylinder 34 to drive the material returning rod 35 to move outwards, and then the process goes to step S9, and when the process goes to step S9, the controller 13 resets the material returning cylinder 34 to retract the material returning rod 35, so that the next process is used, and in step S7, the controller 13 may also drive the material returning cylinder 34 to drive the material returning rod 35 to move.
There is a special case that the nut to be tested cannot be engaged with the checking stud 5 from the beginning, in this case, the nut to be tested cannot be smoothly brought out by the engagement of the checking stud 5, at this time, the micro switch 36 cannot be triggered, and the controller 13 cannot judge according to the signal, and in order to solve this problem, the judgment can be performed in the form of interval time, namely, the triggering time (i.e., the time T) of the second touch switch 28 is calculateda) After interval time T2After (e.g. 0.3S), the micro switch 36 is not triggered, the controller 13 determines that the nut to be tested belongs to the above fault condition, and then, step S31 is performed to drive the feeding cylinder 15 to reset to the right, and then, the removing cylinder 32 is driven to drive the removing rod 33 to perform an extending and retracting action to push the nut to be tested away from the material tank 19 (a third material tank 37 may be further disposed on the side of the first material tank 25 to receive the nut), and then, the rear baffle 6 is reset to enable the second touch switch 28 to enter step S9, thereby completing a cycle.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides an automatic system that nut detected, includes bottom plate (1), the lower extreme fixedly connected with supporting leg (21) of bottom plate (1), one side fixedly connected with riser (2) of bottom plate (1), its characterized in that: the automatic checking fixture is characterized in that a motor (3) is installed on the bottom plate (1), a checking stud (5) is installed on an output shaft (4) of the motor (3), a baffle (6) is arranged at one end, far away from the motor (3), of the checking stud (5), a avoiding hole (9) matched with the checking stud (5) is formed in the baffle (6), at least one end of the baffle (6) is fixedly connected with the bottom plate (1) through a fixing plate (8), two sides of the baffle (6) are respectively provided with a positioning plate (11), the positioning plates (11) are fixedly connected with the bottom plate (1), two positioning plates (11) are respectively provided with a first touch switch (27) and a second touch switch (28), the bottom plate (1) is provided with a controller (13), a feeding cylinder (15) is installed on the side wall of the vertical plate (2) through a supporting platform (14), and a supporting rod (16) is fixedly connected with the side wall of the vertical plate, the utility model discloses a check bolt, including bracing piece (16), material rest (17) of sliding connection on bracing piece (16), piston rod (1501) of material loading cylinder (15) passes through connecting rod (18) and material rest (17) interconnect, open on material rest (17) have with wait to examine nut shape size assorted silo (19), it has discharge gate (20) to open on the lateral wall that material rest (17) are close to check bolt (5).
2. An automated nut inspection system according to claim 1, further comprising: the lower extreme extension line direction of silo (19) is the acute angle with the contained angle of gravity direction, just the contained angle is 90 degrees between the direction of silo (19) and check-up double-screw bolt (5), just lower extreme fixedly connected with supporting leg (21) of bottom plate (1), supporting leg (21) make the structure whole to work or material rest (17) lopsidedness.
3. An automated nut inspection system according to claim 1, further comprising: the piston rod (1501) is inserted in the moving cavity (30) of the connecting rod (18) in a sliding mode, a micro spring (29) is arranged between the piston rod and the moving cavity, the right end of the piston rod (1501) is attached to the side wall of the moving cavity (30) under the action of the micro spring (29), and a micro switch (36) is arranged on the bottom plate (1).
4. An automated nut inspection system according to claim 1, further comprising: the lower terminal surface of bottom plate (1) has branch flitch (23) through fixture block (22) sliding connection, install on the lower terminal surface of bottom plate (1) and divide material cylinder (24), divide the output pole and the branch flitch (23) fixed connection of material cylinder (24), the below of bottom plate (1) is equipped with first workbin (25) and second workbin (26).
5. An automated nut inspection system according to claim 3, wherein: the side surface of the lower end of the material groove (19) is provided with a removing opening (31), an included angle in the direction between the removing opening (31) and the material groove (19) is 90 degrees, the direction of the removing opening (31) is inclined upwards relative to the gravity direction, the side surface of the material frame (17) is provided with a removing air cylinder (32), and the removing air cylinder (32) is used for driving a removing rod (33) penetrating through the removing opening (31).
6. An automated nut inspection system according to claim 1, further comprising: the both ends of baffle (6) all with slide bar (7) sliding connection, the both ends of slide bar (7) all through fixed plate (8) and bottom plate (1) fixed connection, the both ends of baffle (6) all through friction spring (10) with be close to fixed plate (8) interconnect of motor (3) one side.
7. An automated nut inspection system according to claim 1, further comprising: install material returned cylinder (34) on the shell of motor (3), just material returned cylinder (34) drive material returned pole (35) run through dodge hole (9) and the nut contact of test.
8. The working method of the automation system for nut detection is characterized by comprising the following processes:
s1, initializing the system;
s2, the controller (13) drives the feeding cylinder (15) to move towards the direction close to the baffle (6);
s3, the to-be-tested nut extrudes the baffle (6) to enable the second touch switch (28) and the baffle (6) to be separated from a trigger signal and feed back to the controller (13), the controller (13) records the time Ta at the moment and drives the motor (3) to rotate in the positive direction;
when the time reaches Ta+T2While the controller (13) has not received the micro-signalThe signal of the movable switch (36) is carried out to S31, otherwise, S4 is carried out;
s31, the controller (13) drives the feeding cylinder (15) to reset, drives the removing cylinder (32) to drive the removing rod (33) to perform one extending and retracting action, and then the operation enters S9;
s4, triggering the microswitch (36) by the pushing baffle (6) of the nut to be tested, acquiring the signal by the controller (13), and recording the time Tb；
S5, the controller (13) makes the feeding cylinder (15) move rightwards, and makes logic judgment, when the time reaches Tb+T1If the controller (13) does not receive the signal of the first touch switch (27), the step proceeds to step S51, otherwise, the step proceeds to step S6;
s51, controlling the check stud (5) to reverse;
s52, the controller (13) controls the material distributing cylinder (24) to move towards the direction of the second material box (26) to collect the nuts to be tested, and then the nut to be tested enters S9;
s6, the baffle (6) triggers the first touch switch (27), and the controller (13) receives a signal;
s7, the controller (13) drives the motor (3) to drive the check stud (5) to rotate reversely;
s8, the controller (13) drives the material distributing cylinder (24) to keep an initial state, and the first material box (25) collects the nuts to be tested;
s9, the baffle (6) triggers the second touch switch (28), the controller (13) acquires a signal, and the system initialization returns to S1.
9. The method of claim 8, wherein a step S511 is further defined between S51 and S52, and the controller (13) drives the material returning cylinder (34) to move the material returning rod (35) outwards.
CN202011410556.XA 2020-12-06 2020-12-06 Automatic system for nut detection and working method thereof Active CN112691935B (en)

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Publication number Priority date Publication date Assignee Title
CN203479290U (en) * 2013-09-29 2014-03-12 西安麦特沃金液控技术有限公司 Copper ingot vertical type semi-continuous casting machine nut gap detection device
CN104897092A (en) * 2015-06-24 2015-09-09 张家港市港区电子镀膜有限公司 Thread inspecting device of nut thread inspecting machine
CN207894328U (en) * 2018-02-09 2018-09-21 江苏宝特汽车部件有限公司 A kind of logical only detection device of nut
CN207914170U (en) * 2018-01-11 2018-09-28 烟台亿能机电科技有限公司 Collision prevention girders pipe internal thread automatic batch detection device
CN109225909A (en) * 2018-08-30 2019-01-18 叶秉宏 Automatic detection nut interior tooth equipment
CN111054648A (en) * 2020-01-06 2020-04-24 丽水市大成机械制造有限公司 Internal thread automated inspection machine
CN211887973U (en) * 2020-01-18 2020-11-10 深圳市富泰和精密制造股份有限公司 Automatic thread inspection equipment

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203479290U (en) * 2013-09-29 2014-03-12 西安麦特沃金液控技术有限公司 Copper ingot vertical type semi-continuous casting machine nut gap detection device
CN104897092A (en) * 2015-06-24 2015-09-09 张家港市港区电子镀膜有限公司 Thread inspecting device of nut thread inspecting machine
CN207914170U (en) * 2018-01-11 2018-09-28 烟台亿能机电科技有限公司 Collision prevention girders pipe internal thread automatic batch detection device
CN207894328U (en) * 2018-02-09 2018-09-21 江苏宝特汽车部件有限公司 A kind of logical only detection device of nut
CN109225909A (en) * 2018-08-30 2019-01-18 叶秉宏 Automatic detection nut interior tooth equipment
CN111054648A (en) * 2020-01-06 2020-04-24 丽水市大成机械制造有限公司 Internal thread automated inspection machine
CN211887973U (en) * 2020-01-18 2020-11-10 深圳市富泰和精密制造股份有限公司 Automatic thread inspection equipment

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