CN115574749A - Device and method for rapidly screening size of external thread of fastener - Google Patents
Device and method for rapidly screening size of external thread of fastener Download PDFInfo
- Publication number
- CN115574749A CN115574749A CN202211318991.9A CN202211318991A CN115574749A CN 115574749 A CN115574749 A CN 115574749A CN 202211318991 A CN202211318991 A CN 202211318991A CN 115574749 A CN115574749 A CN 115574749A
- Authority
- CN
- China
- Prior art keywords
- fastener
- push rod
- pressure
- controller
- miniature electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to the technical field of thread size detection, and discloses a device and a method for quickly screening the size of an external thread of a fastener, wherein the screening device comprises: fixing mechanism, detection mechanism includes: the bracket, the first miniature electric push rod and the first shell are fixed on a push rod head of the first miniature electric push rod; a plurality of detecting element is the matrix and sets up on first casing, and every detecting element all includes: first backup pad, second casing, be equipped with in the second casing: the upper end of the first pressure sensor is provided with a pressing plate; the limiting plate and the test needle are vertically arranged, and the lower end of the limiting plate extends out of the second shell; a plurality of alarms, the controller sets up in first casing, first miniature electric putter, a plurality of first pressure sensor and a plurality of alarm respectively with controller signal of telecommunication connection, this kind of screening device and method can detect unqualified fastener fast, labour saving and time saving has improved the measuring accuracy.
Description
Technical Field
The invention relates to the technical field of thread size detection, in particular to a device and a method for rapidly screening the size of an external thread of a fastener.
Background
Along with the development of society, the change of people's shopping mode, the net purchase becomes the main mode of shopping, and in order to facilitate the transportation, a lot of large-scale articles such as shelf, cupboard, chair etc. are changed into detachable design by original integral type design, transport after the dismantlement, use the fastener to install after arriving, therefore the fastener must ensure qualified, can the aggregate erection not loosen, reach the quality requirement.
The existing fasteners need to be inspected before leaving a factory to screen out unqualified fasteners, however, the existing inspection device manually uses a vernier caliper or a micrometer to inspect the size of the external thread of the fastener, the efficiency is low, only selective inspection can be carried out, some unqualified fasteners still leave the factory, and the problem that objects cannot be fastened and installed due to the unqualified fasteners is avoided.
Because the existing thread size inspection is manually carried out by using a vernier caliper or a micrometer, the hysteresis quality is realized, the intervention of production and manufacturing cannot be carried out in time, the manual inspection wastes time and labor, a large manual measurement error exists, and the requirement of automatic production cannot be met.
Disclosure of Invention
The invention provides a device and a method for rapidly screening the size of an external thread of a fastener, which can rapidly detect unqualified fasteners, save time and labor and improve the accuracy of measurement.
The invention provides a device and a method for rapidly screening the size of an external thread of a fastener, which comprises the following steps:
the fixing mechanism is used for fixing the two sides of the top and the bottom of the screw rod which is horizontally arranged on the fastener;
detection mechanism for the external screw thread to the screw rod top detects, detection mechanism includes:
a bracket disposed around the fastener;
the first miniature electric push rod is arranged on the bracket, and the head of the push rod is arranged downwards;
the first shell is fixedly connected with a push rod head of the first miniature electric push rod;
a plurality of detecting element, be the matrix setting on first casing, every detecting element all includes:
the first supporting plate is arranged in the first shell;
the second casing, the bottom of upper end and first backup pad is fixed, be equipped with in the second casing:
the first pressure sensor is fixed at the top of the second shell;
the upper end of the spring is connected with a pressing plate, and the pressing plate is positioned right below the first pressure sensor;
the top of the limiting plate is fixedly connected with the lower end of the spring;
the testing needle is vertically arranged, the upper end of the testing needle is fixedly connected with the bottom of the limiting plate, and the lower end of the testing needle sequentially extends out of the second shell and the first shell;
the alarm device is arranged on the first shell opposite to the screw;
the controller is arranged in the first shell, and the first miniature electric push rod, the first pressure sensors and the alarms are respectively in electric signal connection with the controller.
Further, the level is equipped with many slide bars that are parallel to each other and the interval is the same in the first casing, the cover is equipped with a plurality of sliding sleeves on the slide bar, first backup pad is fixed on the bottom surface of sliding sleeve, the left and right sides of a plurality of second casings all is equipped with first electro-magnet, first electro-magnet and controller signal of telecommunication are connected.
Further, still be equipped with the second electro-magnet in the first casing, the second electro-magnet is located a plurality of sliding sleeves directly over, the sliding sleeve appearance is the square structure, the top of a plurality of sliding sleeves all is equipped with the third electro-magnet, the left and right sides of a plurality of sliding sleeves all is equipped with the fourth electro-magnet, second electro-magnet, third electro-magnet and fourth electro-magnet respectively with controller signal of telecommunication connection.
Further, a conveying device is included, the conveying device comprising:
a drive motor;
four gears arranged in two gear boxes, two gear boxes arranged at two ends of the fastener conveying path, two gears arranged in each gear box, two gears arranged up and down and meshed with each other, a rotating shaft of one gear of the four gears is fixed on an output shaft of a driving motor,
the four belt wheels are sleeved on the rotating shafts of the four gears in a one-to-one correspondence manner;
one of the two conveying belts is sleeved on two belt wheels on rotating shafts of two gears at the upper parts of the two gear boxes, and the other conveying belt is sleeved on two belt wheels on rotating shafts of two gears at the lower parts of the two gear boxes and used for clamping a screw rod at one end of a conveying fastener close to a bolt head;
the driving motor is in electric signal connection with the controller.
Further, the fixing mechanism includes: first mounting and second mounting, first mounting and second mounting set up in the relative both sides of screw rod, first mounting includes:
a first support base;
the second miniature electric push rod is fixed on the first supporting seat;
the bottom of the second supporting plate is fixedly connected with the push rod head of the first miniature electric push rod;
a second pressure sensor disposed on a top surface of the second support plate;
the second fixing member includes:
the two third supporting plates are arranged on the left side and the right side of the first shell respectively through the connecting rods;
the third pressure sensors are arranged on the bottom surfaces of the two third supporting plates;
the second miniature electric push rod, the second pressure sensor and the third pressure sensor are respectively in electric signal connection with the controller.
Furthermore, a plurality of first positioning grooves are formed in the second supporting plate, a plurality of second positioning grooves are formed in the third supporting plate, the first positioning grooves and the second positioning grooves are symmetrically arranged relatively, and the positions of the first positioning grooves and the positions of the second positioning grooves are matched with the positions of the sliding rods and used for clamping and fixing the screw rods.
Furthermore, all be equipped with a plurality of step stoppers in first constant head tank and the second constant head tank, second pressure sensor and third pressure sensor set up on a plurality of step stoppers for a plurality of respectively.
Further, the method also comprises the following steps: sorting mechanism for sorting unqualified fasteners of external thread size detection, sorting mechanism includes:
the second supporting seat is positioned on the left side of the bolt head;
the steering engine is arranged on the second supporting seat;
the third miniature electric push rod is arranged on a rudder disc of the steering engine;
the sleeve joint is fixed on the push rod head of the third miniature electric push rod, and the right end of the sleeve joint is provided with an opening;
the fifth electromagnet is arranged at the bottom in the sleeve joint;
and the steering engine and the fifth electromagnet are respectively in signal connection with the controller.
A method for rapidly screening the size of an external thread of a fastener comprises the following steps:
s1, fixing two sides and the bottom of the top of a screw rod, which is horizontally arranged on a fastener, through a fixing mechanism;
s2, the controller controls the first miniature electric push rod to extend for a set distance and pushes the first shell to the top of the screw rod;
s3, tightly abutting the tooth tops and the tooth bottoms of the external threads at the top of the screw rod through the test needle, compressing the spring at the moment, and sending the pressure to the controller by the first pressure sensor under the pressure of the pressing plate;
s4, after receiving the pressure value of the first pressure sensor, the controller calculates the pressure difference, compares the pressure value and the pressure difference with a set pressure value and a set pressure difference range, and controls the alarm to give an alarm when the pressure value or the pressure difference range is not in the set range;
s5, determining the position of an unqualified fastener according to the position of the alarm;
and S6, removing the unqualified fasteners.
Compared with the prior art, the invention has the beneficial effects that:
the two sides and the bottom of the top of the screw rod of the fastener are fixed through the fixing mechanism, the controller controls the first miniature electric push rod to extend for a set distance, and the first shell is pushed to the top of the screw rod; the testing needle tightly abuts against the tooth top and the tooth bottom of the external thread at the top of the screw rod, the spring is compressed at the moment, and the first pressure sensor is pressed by the pressing plate and sends the pressure to the controller; the controller calculates the pressure difference between two adjacent first pressure sensors after receiving the pressure values of the first pressure sensors, compares the pressure values detected by the plurality of first pressure sensors and the pressure difference between two adjacent first pressure sensors with the set pressure value and the set pressure difference range, and controls the alarm to give an alarm when the pressure values or the pressure difference range is not in the set range.
Drawings
Fig. 1 is a schematic longitudinal sectional structural view of a device for rapidly screening dimensions of external threads of a fastener provided by the invention.
Fig. 2 is a schematic structural diagram of a detection unit in a device for rapidly screening dimension of external threads of fasteners provided by the invention.
Fig. 3 is a schematic structural diagram of a detection mechanism in the quick screening device for the size of the external thread of the fastener according to the present invention.
Fig. 4 is a schematic top view of a second support plate of the device for rapidly screening dimensions of external threads of a fastener according to the present invention.
Fig. 5 is a schematic structural diagram of a sliding sleeve in a rapid screening device for the size of an external thread of a fastener provided by the invention.
Fig. 6 is a schematic structural diagram of a sorting mechanism in a fastener external thread size rapid screening device provided by the invention.
Description of reference numerals:
1-a first support seat, 2-a second miniature electric push rod, 3-a second support plate, 4-a screw, 5-a support, 6-a third support plate, 7-a connecting rod, 8-a first miniature electric push rod, 9-a sliding sleeve, 10-a bolt head, 11-a positioning pin, 12-a conveying belt, 13-a sliding rod, 14-a first electromagnet, 15-a first shell, 16-a second electromagnet, 17-a contact, 18-, 19-a first positioning groove, 20-a second positioning groove, 21-a testing needle, 22-a limiting plate, 23-a sliding block, 24-a second shell, 25-a spring, 26-a first pressure sensor, 27-a first support plate, 28-a sliding sleeve, 28-a third electromagnet, 28-2-a fourth electromagnet, 29-a second support seat, 30-a steering engine, 31-a third miniature electric push rod, 32-a socket joint, 33-a fifth electromagnet.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to fig. 1-6, but it should be understood that the scope of the present invention is not limited to the embodiment.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing technical solutions of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1, an embodiment of the present invention provides a device and a method for rapidly screening external thread dimensions of a fastener, including: the fixing mechanism is used for fixing the two sides of the top and the bottom of the screw 4 which is horizontally arranged by the fastener;
detection mechanism for detect the external screw thread at screw rod 4 top, detection mechanism includes:
a bracket 5 disposed around the fastener;
the first miniature electric push rod 8 is arranged on the bracket 5, and the head of the push rod is arranged downwards;
the first shell 15 is fixedly connected with the push rod head of the first miniature electric push rod 8;
a plurality of detecting units provided in a matrix on the first casing 15, each of the detecting units including:
a first support plate 27 disposed inside the first housing 15;
a first pressure sensor 26 fixed on top of the second housing 24;
a spring 25, the upper end of which is connected with a pressure plate 29, and the pressure plate 29 is positioned right below the first pressure sensor 26;
the top of the limiting plate 22 is fixedly connected with the lower end of the spring 25;
the testing needle 21 is vertically arranged, the upper end of the testing needle is fixedly connected with the bottom of the limiting plate 22, and the lower end of the testing needle sequentially extends out of the second shell 24 and the first shell 15;
the alarm device also comprises a plurality of alarms, and the alarms are arranged on the first shell 15 opposite to the screw rod 4;
and the controller is arranged in the first shell 15, and the first miniature electric push rod 8, the plurality of first pressure sensors 26 and the plurality of alarms are respectively connected with the controller through electric signals.
The plurality of detection units are arranged on the first shell 15 in a matrix manner, so that the sizes of the external threads of the plurality of fasteners can be detected simultaneously, and the detection efficiency is improved. Can set up the multirow, can test a plurality of screws simultaneously, for example two rows or three rows, can test the thread size of two or three screws simultaneously, and the position between two adjacent rows of detecting element can be adjusted, adapts to the screw rod of different models.
The fixing mechanism is arranged on the support 5, the fixing mechanism is a fixing limiting block with a telescopic function, the screw rod is kept immovable through the fixing limiting block, and the screw rod is kept immovable in the detection process.
The detection principle is as follows: according to the invention, two sides of the top and the bottom of the screw rod are fixed through the fixing mechanism, the controller controls the first miniature electric push rod 8 to extend for a set distance, and the first shell 15 is pushed to the top of the screw rod 4; the set distance is set according to the type of the screw, the screw is longer when being thinner and shorter when being thicker, the screw is pressed against the tooth top and the tooth bottom of the external thread at the top of the screw 4 through the testing needle 21, the spring 25 is compressed at the moment, the first pressure sensor 26 is pressed by the pressing plate 29, and the detected pressure is sent to the controller; after the controller receives the pressures detected by the first pressure sensors 26, the pressure difference between every two adjacent first pressure sensors 26 is calculated, the pressure values detected by the first pressure sensors 26 and the pressure difference between every two adjacent first pressure sensors 26 are compared with the set pressure values and the set pressure difference range, when the pressure values or the pressure difference range is not in the set range, the controller controls the alarm to give an alarm, the alarm is a buzzer and an indicator lamp, each fastener is correspondingly provided with an indicator lamp, the indicator lamp is changed into red to indicate that the detection is unqualified, the indicator lamp is changed into green to indicate that the detection is qualified, the indicator lamp is yellow to indicate that the fastener is in the detection process, and after the detection is finished, a worker determines the fastener to be removed according to the colors of the buzzer and the indicator lamp.
In order to adjust the distance between two adjacent test needles 21, adapt to the fastener of the thread interval of different specifications, furtherly, the level is equipped with many slide bars 13 that are parallel to each other and the interval is the same in the first casing 15, the cover is equipped with a plurality of sliding sleeves 28 on the slide bar 13, first backup pad 27 is fixed on the bottom surface of sliding sleeve 28, the left and right sides of a plurality of second casings 24 all is equipped with first electro-magnet 14, first electro-magnet 14 and controller signal connection.
The left side and the right side of each sliding sleeve 28 on the sliding rod 13 are provided with a limiting bulge for limiting the moving range of the sliding sleeve 28.
The second shell 24 is a cuboid or a cube, and the first electromagnet 14 is fixed on the opposite side faces of two adjacent cuboids or cubes.
The sliding rod 13, the sliding sleeve 28 and the first supporting plate 27 are all made of stainless steel.
According to the invention, the controller controls the first electromagnets 14 on the left and right opposite surfaces of the two adjacent second shells 24 to be electrified to realize the same magnetic poles, so that repulsion is generated, the sliding sleeve 28 is driven to slide on the sliding rod 13 under the action of the repulsion, the distance between the two adjacent second shells 24 is increased, when the controller controls the first electromagnets on the opposite surfaces of the two adjacent second shells 24 to be electrified to realize the same magnetic poles, attraction is generated, the sliding sleeve 28 is driven to slide on the sliding rod 13 under the action of the attraction, the distance between the two adjacent second shells 24 is reduced, and the adjustment of the distance is realized through the adjustment of the current magnitude by the controller, so that the distance between the left and right adjacent detection units can be adjusted according to the external thread pitch of fasteners with different specifications, and the controller is suitable for fasteners with different specifications.
In order to reduce the sliding friction of the sliding sleeve 28 and enable the sliding sleeve 28 to freely slide, as shown in fig. 3 and 5, further, a second electromagnet 16 is further disposed in the first housing 15, the second electromagnet 16 is located right above the plurality of sliding sleeves 28, the sliding sleeve 28 is in a cube structure, third electromagnets 28-1 are fixedly disposed on the top of the first supporting plate 27 and the top of the sliding sleeve 28, fourth electromagnets 28-2 are disposed on the left side and the right side of the plurality of sliding sleeves 28, and the second electromagnet 16, the third electromagnet 28-1 and the fourth electromagnet 28-2 are respectively connected with the controller through electric signals.
According to the invention, the second electromagnet 16 is arranged in the first shell 15, the third electromagnets are arranged on the top of the sliding sleeve 28 and the top of the first supporting plate 27, the controller controls the currents of the second electromagnet 16 and the third electromagnet 28-1 to generate attraction between the second electromagnet 16 and the third electromagnet 28-1, the sliding sleeve 28 can overcome the gravity of the second shell and internal components under the action of the attraction, the sliding sleeve 28 is not in contact with the sliding rod 13 and is in a magnetic suspension state, the sliding sleeve 28 is prevented from being rubbed with the sliding rod 13 in the moving process, meanwhile, the fourth electromagnets 28-2 are arranged on the left side and the right side of the sliding sleeve 28, and the controller controls the currents of the fourth electromagnets 28-2 to realize that the sliding sleeve 28 can easily slide on the sliding rod 13 to adjust the distance between two adjacent detection units.
In order to cooperate with the automated inspection, it is necessary to carry out an automated conveying of the fasteners, and further, it comprises a conveying device comprising: a drive motor;
four gears arranged in two gear boxes, two gear boxes arranged at two ends of the fastener conveying path, two gears arranged in each gear box, two gears arranged up and down and meshed with each other, a rotating shaft of one gear of the four gears is fixed on an output shaft of a driving motor,
the four belt wheels are sleeved on the rotating shafts of the four gears in a one-to-one correspondence manner;
two conveying belts 12, one of which is sleeved on two belt wheels on the rotating shafts of the two gears at the upper parts of the two gear boxes, and the other one of which is sleeved on two belt wheels on the rotating shafts of the two gears at the lower parts of the two gear boxes, and is used for clamping the screw rod 4 at one end of the conveying fastener close to the bolt head 10;
the driving motor is in electric signal connection with the controller.
The controller controls the driving motor to drive the two gears to move in opposite directions, so that the two conveying belts 12 on the four belt wheels 12-1 clamp and convey the screw rod 4, the fastener is automatically conveyed, and the requirement of automatic production detection is met.
Further, the fixing mechanism includes: first mounting and second mounting, first mounting and second mounting set up in the relative both sides of screw rod 4, first mounting includes: a first support base 1; the second miniature electric push rod 2 is fixed on the first supporting seat 1; the bottom of the second supporting plate 3 is fixedly connected with the push rod head of the first miniature electric push rod 2; a second pressure sensor provided on the top surface of the second support plate 3; the second fixing member includes: two third supporting plates 6 respectively disposed at left and right sides of the first housing 15 through the connecting rods 7; third pressure sensors provided on the bottom surfaces of the two third support plates 6; the second miniature electric push rod 2, the second pressure sensor and the third pressure sensor are respectively connected with the controller through electric signals.
The two third support plates 6 are used for fixing screws located at the left and right sides of the first housing 15.
According to the invention, the height of the second supporting plate 3 can be adjusted according to the thickness of the screw rod 4 through the second miniature electric push rod 2, the first fixing part and the second fixing part can stably fix the screw rod 4 through the second pressure sensor and the third pressure sensor, and the problem of inaccurate detection caused by the movement of the screw rod in the detection process is avoided.
In order to better position the screw rod 4, as shown in fig. 3, further, a plurality of first positioning grooves 19 are formed in the second support plate 3, a plurality of second positioning grooves 20 are formed in the third support plate 6, the first positioning grooves 19 and the second positioning grooves 20 are symmetrically arranged relatively, and the positions of the first positioning grooves 19 and the positions of the second positioning grooves 20 are matched with the position of the slide rod 13 to clamp and fix the screw rod 4.
According to the invention, the screw rod 4 is limited and fixed through the first positioning groove 19 and the second positioning groove 20, so that the problem of inaccurate detection caused by sliding of the screw rod in the abutting process of the test needle is avoided.
In order to position the screws of different models, as shown in fig. 4, further, a plurality of step limiting blocks are respectively arranged in the first positioning groove 19 and the second positioning groove 20, and the second pressure sensor and the third pressure sensor are respectively arranged on the step limiting blocks.
According to the invention, the plurality of step limiting blocks are respectively arranged in the first positioning groove 19 and the second positioning groove 20, so that the fasteners with different specifications can be stably limited and fixed.
In order to automatically reject the unqualified fastener, as shown in fig. 6, the method further includes: sorting mechanism for sorting unqualified fasteners of external thread size detection, sorting mechanism includes: a second support seat 29 located on the left side of the bolt head 10; the steering engine 30 is arranged on the second support seat 29; the third miniature electric push rod 31 is arranged on a steering wheel of the steering engine 30; the sleeve joint 32 is fixed on the push rod head of the third miniature electric push rod 31, and the right end of the sleeve joint 32 is provided with an opening; a fifth electromagnet 33 provided at the bottom inside the socket 32; the steering engine 30 and the fifth electromagnet 33 are respectively in signal connection with a controller.
When the alarm gives an alarm, the controller controls the third miniature electric push rod 31 to extend, the sleeve joint head 32 is used for sleeve joint of the bolt head 10, the controller controls the current of the fifth electromagnet 34 to adsorb the bolt head and draw out a fastener from the conveyor belt, then the controller controls the steering engine 30 to rotate for a certain angle to drive an unqualified fastener to rotate for a certain angle, the controller controls the fifth electromagnet 34 to lose power, the fastener falls under the action of gravity, and automatic sorting and removing of the unqualified fastener are realized.
A method for rapidly screening the size of an external thread of a fastener comprises the following steps:
s1, fixing two sides of the top and the bottom of a screw 4 which is horizontally arranged on a fastener through a fixing mechanism;
s2, the controller controls the first miniature electric push rod 8 to extend for a set distance, and the first shell 15 is pushed to the top of the screw rod 4;
s3, tightly abutting the tooth tops and the tooth bottoms of the external threads on the top of the screw rod 4 through the testing needle 21, compressing the spring 25 at the moment, and sending the pressure to the controller by the first pressure sensor 26 under the pressure of the pressure plate 29;
s4, after receiving the pressure value of the first pressure sensor 26, the controller calculates the pressure difference, compares the pressure value and the pressure difference with a set pressure value and a set range of the pressure difference, and controls the alarm to give an alarm when the pressure value or the set range of the pressure difference is not in the set range;
s5, determining the position of an unqualified fastener according to the position of the alarm;
and S6, removing the unqualified fastener.
The two sides and the bottom of the top of the screw rod of the fastener are fixed through the fixing mechanism, the controller controls the first miniature electric push rod to extend for a set distance, and the first shell is pushed to the top of the screw rod; the testing needle tightly abuts against the tooth top and the tooth bottom of the external thread at the top of the screw rod, the spring is compressed at the moment, and the first pressure sensor is pressed by the pressing plate and sends the pressure to the controller; the controller receives the pressure values of the first pressure sensors, calculates the pressure difference between every two adjacent first pressure sensors, compares the pressure values detected by the first pressure sensors and the pressure difference between every two adjacent first pressure sensors with the set pressure values and the set pressure difference range, and controls the alarm to give an alarm when the pressure values or the pressure difference range is not within the set range, so that the top and the bottom of the external thread of the fastener are automatically detected, time and labor are saved, and errors caused by artificial detection are avoided.
According to the invention, the controller controls the first electromagnets on the opposite surfaces of the two adjacent second shells to be electrified so as to realize the same magnetic poles, repulsion force is generated, the sliding sleeve is driven to slide on the sliding rod under the action of the repulsion force, the distance between the two adjacent second shells is increased, when the controller controls the first electromagnets on the opposite surfaces of the two adjacent second shells to be electrified so as to realize the same magnetic poles, attraction force is generated, the sliding sleeve is driven to slide on the sliding rod under the action of the attraction force, the distance between the two adjacent second shells is reduced, the adjustment of the distance is realized by the controller through the adjustment of the current, the distance between the left and right adjacent detection units can be adjusted according to the external thread pitch of fasteners with different specifications, and the fastener is suitable for fasteners with different specifications.
According to the invention, the second electromagnet is arranged in the first shell, the third electromagnet is arranged at the top of the sliding sleeve and the top of the first supporting plate, the controller is used for controlling the currents of the second electromagnet and the third electromagnet, the attraction force is generated between the second electromagnet and the third electromagnet, under the action of the attraction force, the sliding sleeve can overcome the gravity of a plurality of internal components of the second subject, the sliding sleeve is not in contact with the sliding rod and is in a magnetic suspension state, the sliding sleeve is prevented from rubbing the sliding rod in the moving process, and meanwhile, the fourth electromagnets are arranged at the left side and the right side of the sliding sleeve, and the controller is used for controlling the current of the fourth electromagnet, so that the sliding sleeve can easily slide on the sliding rod to adjust the distance between two adjacent detection units.
According to the invention, the controller controls the driving motor to drive the two gears to move in opposite directions, so that the two conveying belts on the four belt wheels can clamp and convey the screw rod, the fastener is automatically conveyed, and the requirement of automatic production detection is met.
According to the invention, the height of the second supporting plate can be adjusted according to the thickness of the screw rod through the second miniature electric push rod, the screw rod can be stably fixed by the fixing mechanism through the second pressure sensor and the third pressure sensor, and the problem of inaccurate detection caused by the movement of the screw rod in the detection process is avoided.
According to the invention, the screw is limited and fixed through the first positioning groove and the second positioning groove, so that the problem of inaccurate detection caused by sliding of the screw in the abutting process of the test needle is avoided.
According to the invention, the plurality of step limiting blocks are arranged in the first positioning groove and the second positioning groove, so that the fasteners with different specifications can be stably limited and fixed.
When the alarm gives an alarm, the controller controls the third miniature electric push rod to extend, the socket head is used for socket joint of the bolt head, the controller controls the current of the fifth electromagnet to adsorb the bolt head, the fastener is detached from the conveyor belt, then the controller controls the steering engine to rotate for a certain angle to drive the unqualified fastener to rotate for a certain angle, the controller controls the fifth electromagnet to lose power, the fastener falls under the action of gravity, and automatic sorting of the unqualified fastener is realized.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (9)
1. A quick screening device of fastener external screw thread size, characterized by includes:
the fixing mechanism is used for fixing the two sides of the top and the bottom of the screw (4) which is horizontally arranged on the fastener;
detection mechanism for detect the external screw thread at screw rod (4) top, detection mechanism includes:
a bracket (5) disposed around the fastener;
the first miniature electric push rod (8) is arranged on the bracket (5), and the head of the push rod is arranged downwards;
the first shell (15) is fixedly connected with a push rod head of the first miniature electric push rod (8);
a plurality of detection units disposed in a matrix on the first housing (15), each detection unit including:
a first support plate (27) provided in the first housing (15);
second casing (24), the upper end is fixed with the bottom of first backup pad (27), be equipped with in second casing (24):
a first pressure sensor (26) fixed on the top of the second housing (24);
the upper end of the spring (25) is connected with a pressure plate (29), and the pressure plate (29) is positioned right below the first pressure sensor (26);
the top of the limiting plate (22) is fixedly connected with the lower end of the spring (25);
the testing needle (21) is vertically arranged, the upper end of the testing needle is fixedly connected with the bottom of the limiting plate (22), and the lower end of the testing needle sequentially extends out of the second shell (24) and the first shell (15);
the alarm device is characterized by further comprising a plurality of alarms, wherein the alarms are arranged on the first shell (15) opposite to the screw (4);
the controller is arranged in the first shell (15), and the first miniature electric push rod (8), the first pressure sensors (26) and the alarms are respectively in electric signal connection with the controller.
2. The device for rapidly screening the dimension of the external thread of the fastener according to claim 1, wherein a plurality of sliding rods (13) which are parallel to each other and have the same distance are horizontally arranged in the first casing (15), a plurality of sliding sleeves (28) are sleeved on the sliding rods (13), the first supporting plate (27) is fixed on the bottom surfaces of the sliding sleeves (28), the first electromagnets (14) are respectively arranged on the left side and the right side of the plurality of second casings (24), and the first electromagnets (14) are electrically connected with the controller.
3. The device for rapidly screening the external thread size of the fastener according to claim 2, wherein a second electromagnet (16) is further arranged in the first housing (15), the second electromagnet (16) is located right above the plurality of sliding sleeves (28), the sliding sleeves (28) are in a square structure, third electromagnets (28-1) are fixedly arranged at the tops of the first supporting plate (27) and the plurality of sliding sleeves (28), fourth electromagnets (28-2) are arranged on the left side and the right side of the plurality of sliding sleeves (28), and the second electromagnet (16), the third electromagnet (28-1) and the fourth electromagnet (28-2) are respectively in electrical signal connection with the controller.
4. The rapid screening device for the size of the external thread of the fastener as claimed in claim 1, comprising a conveying device, the conveying device comprising:
a drive motor;
four gears arranged in two gear boxes, two gear boxes arranged at two ends of the fastener detection conveying path, two gears arranged up and down and meshed with each other in each gear box, a rotating shaft of one gear of the four gears is fixed on an output shaft of a driving motor,
the four belt wheels are sleeved on the rotating shafts of the four gears in a one-to-one correspondence manner;
two conveying belts (12), one of which is sleeved on two belt wheels on the rotating shafts of the two gears at the upper parts of the two gear boxes, and the other one of which is sleeved on two belt wheels on the rotating shafts of the two gears at the lower parts of the two gear boxes, and is used for clamping a screw (4) at one end of a conveying fastener close to a bolt head (10);
the driving motor is in electric signal connection with the controller.
5. The rapid screening device for the dimension of the external thread of the fastener as recited in claim 2, wherein the fixing mechanism comprises: first mounting and second mounting, first mounting and second mounting set up in screw rod (4) relative both sides, first mounting includes:
a first support base (1);
the second miniature electric push rod (2) is fixed on the first supporting seat (1);
the bottom of the second supporting plate (3) is fixedly connected with the push rod head of the first miniature electric push rod (2);
a second pressure sensor provided on the top surface of the second support plate (3);
the second fixing member includes:
the two third supporting plates (6) are respectively arranged on the left side and the right side of the first shell (15) through connecting rods (7);
third pressure sensors arranged on the bottom surfaces of the two third support plates (6);
the second miniature electric push rod (2), the second pressure sensor and the third pressure sensor are respectively in electric signal connection with the controller.
6. The quick screening device for the sizes of the external threads of the fasteners as claimed in claim 5, wherein a plurality of first positioning grooves (19) are formed in the second supporting plate (3), a plurality of second positioning grooves (20) are formed in the third supporting plate (6), the first positioning grooves (19) and the second positioning grooves (20) are symmetrically arranged relative to each other, and the positions of the first positioning grooves (19) and the positions of the second positioning grooves (20) are matched with the position of the sliding rod (13) for clamping and fixing the screw (4).
7. The device for rapidly screening size of external thread of fastener according to claim 6, wherein a plurality of step limiting blocks are respectively disposed in the first positioning groove (19) and the second positioning groove (20), and the plurality of second pressure sensors and the plurality of third pressure sensors are respectively disposed on the plurality of step limiting blocks.
8. The rapid screening device for the dimensions of external threads of fasteners as recited in claim 1, further comprising: sorting mechanism for sorting unqualified fasteners of external thread size detection, sorting mechanism includes:
a second support seat (29) located on the left side of the bolt head (10);
the steering engine (30) is arranged on the second support seat (29);
the third miniature electric push rod (31) is arranged on a rudder disc of the steering engine (30);
the sleeve joint (32) is fixed on the push rod head of the third miniature electric push rod (31), and the right end of the sleeve joint (32) is provided with an opening;
a fifth electromagnet (33) arranged at the bottom in the sleeve joint (32);
the steering engine (30) and the fifth electromagnet (33) are respectively in signal connection with the controller.
9. A screening method using the rapid screening device for the size of external thread of a fastener according to any one of claims 1 to 8, comprising the steps of:
s1, fixing two sides of the top and the bottom of a screw (4) with a fastener horizontally placed through a fixing mechanism;
s2, the controller controls the first miniature electric push rod (8) to extend for a set distance, and the first shell (15) is pushed to the top of the screw (4);
s3, tightly abutting the tooth tops and the tooth bottoms of the external threads on the top of the screw rod (4) through the testing needle (21), compressing the spring (25), and sending the pressure to the controller by the first pressure sensor (26) under the pressure of the pressing plate (29);
s4, after receiving the pressure value of the first pressure sensor (26), the controller calculates the pressure difference, compares the pressure value and the pressure difference with a set pressure value and a set pressure difference range, and controls the alarm to give an alarm when the pressure value or the pressure difference range is not in the set range;
s5, determining the position of an unqualified fastener according to the position of the alarm;
and S6, removing the unqualified fasteners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211318991.9A CN115574749B (en) | 2022-10-26 | 2022-10-26 | Device and method for rapidly screening external thread size of fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211318991.9A CN115574749B (en) | 2022-10-26 | 2022-10-26 | Device and method for rapidly screening external thread size of fastener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115574749A true CN115574749A (en) | 2023-01-06 |
| CN115574749B CN115574749B (en) | 2023-05-02 |
Family
ID=84587226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211318991.9A Active CN115574749B (en) | 2022-10-26 | 2022-10-26 | Device and method for rapidly screening external thread size of fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115574749B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05203441A (en) * | 1992-01-27 | 1993-08-10 | Nissan Motor Co Ltd | Female thread measuring apparatus |
| JP2001264038A (en) * | 2000-03-21 | 2001-09-26 | Mitsubishi Electric Corp | Screw thread chipping detector and screw thread chipping detecting method |
| CN207516017U (en) * | 2017-12-08 | 2018-06-19 | 青岛铸辉铜业有限公司 | A kind of screw thread Smart Verify device |
| CN111424508A (en) * | 2020-04-24 | 2020-07-17 | 福建省永正工程质量检测有限公司 | Device and method for detecting flatness of highway bridge |
| CN111929046A (en) * | 2020-07-31 | 2020-11-13 | 山东高强紧固件有限公司 | Nut thread detection equipment |
| CN112304237A (en) * | 2020-12-09 | 2021-02-02 | 东莞市夯牛机电科技有限公司 | Thread depth detection device for machining automobile gear lever |
| CN113663923A (en) * | 2021-08-12 | 2021-11-19 | 重庆优云迪科技有限公司 | Detection apparatus for nonstandard bolt processing apparatus has spacing clamping function |
| CN113701607A (en) * | 2021-10-27 | 2021-11-26 | 山东高强紧固件有限公司 | Thread detection device |
| CN215823696U (en) * | 2021-09-09 | 2022-02-15 | 安徽科技学院 | Detection apparatus capable of automatically detecting thread specifications based on PLC |
-
2022
- 2022-10-26 CN CN202211318991.9A patent/CN115574749B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05203441A (en) * | 1992-01-27 | 1993-08-10 | Nissan Motor Co Ltd | Female thread measuring apparatus |
| JP2001264038A (en) * | 2000-03-21 | 2001-09-26 | Mitsubishi Electric Corp | Screw thread chipping detector and screw thread chipping detecting method |
| CN207516017U (en) * | 2017-12-08 | 2018-06-19 | 青岛铸辉铜业有限公司 | A kind of screw thread Smart Verify device |
| CN111424508A (en) * | 2020-04-24 | 2020-07-17 | 福建省永正工程质量检测有限公司 | Device and method for detecting flatness of highway bridge |
| CN111929046A (en) * | 2020-07-31 | 2020-11-13 | 山东高强紧固件有限公司 | Nut thread detection equipment |
| CN112304237A (en) * | 2020-12-09 | 2021-02-02 | 东莞市夯牛机电科技有限公司 | Thread depth detection device for machining automobile gear lever |
| CN113663923A (en) * | 2021-08-12 | 2021-11-19 | 重庆优云迪科技有限公司 | Detection apparatus for nonstandard bolt processing apparatus has spacing clamping function |
| CN215823696U (en) * | 2021-09-09 | 2022-02-15 | 安徽科技学院 | Detection apparatus capable of automatically detecting thread specifications based on PLC |
| CN113701607A (en) * | 2021-10-27 | 2021-11-26 | 山东高强紧固件有限公司 | Thread detection device |
Non-Patent Citations (1)
| Title |
|---|
| 吴维新 等: "用于管路连接的新型燕尾牙型螺纹及其测量" * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115574749B (en) | 2023-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201613228U (en) | Inductor testing and screening machine | |
| CN208580933U (en) | A kind of automatic rotary disc type connector kludge | |
| CN115574749A (en) | Device and method for rapidly screening size of external thread of fastener | |
| CN111422613A (en) | Spline check out test set | |
| CN110788021A (en) | Spark plug iron-clad stock size detection equipment | |
| CN107399163A (en) | A kind of car electrics production detection spray code spraying apparatus | |
| CN109932166A (en) | A kind of torque detection machine and its technique | |
| CN213223309U (en) | Spring external diameter detection device | |
| CN219415967U (en) | Iron shell size detection device | |
| CN111412837A (en) | Detection device and detection method for full-size measurement of new energy battery | |
| CN209326893U (en) | A kind of modular low-voltage line bundle airtight test fixture | |
| CN109724547A (en) | A kind of photovoltaic module dislocation on-line measuring device | |
| CN210913740U (en) | Food safety inspection places case with detector | |
| CN210187649U (en) | Plain type soybean sieving mechanism suitable for soyfood processing is used | |
| CN109701891B (en) | Box bottom damage detection device and method for removing damaged smoke boxes according to detection device | |
| CN109857603B (en) | USB interface quality detection jig and operation method thereof | |
| CN113188414A (en) | Automatic detection line for motor rotor iron core | |
| CN221706595U (en) | Detection device for electronic product assembly detection | |
| CN220049034U (en) | Positioning and conveying device for hollow shaft visual detection | |
| CN111672770A (en) | Automatic gauge passing machine for waterproof ring support of lifting camera | |
| CN219669489U (en) | Initiating explosive device finished product transfer equipment | |
| CN114234870B (en) | Intelligent complete detection equipment for sleeve | |
| CN216078869U (en) | AOI detects machine | |
| CN211783168U (en) | Ornamental strip processing inspection mechanism | |
| CN220049050U (en) | Defective product removing device based on visual detection technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |