CN112893154A - Screw straightness detection mechanism and automatic screw detection equipment - Google Patents
Screw straightness detection mechanism and automatic screw detection equipment Download PDFInfo
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- CN112893154A CN112893154A CN201911228142.2A CN201911228142A CN112893154A CN 112893154 A CN112893154 A CN 112893154A CN 201911228142 A CN201911228142 A CN 201911228142A CN 112893154 A CN112893154 A CN 112893154A
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- 238000001514 detection method Methods 0.000 title claims abstract description 127
- 238000003825 pressing Methods 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims description 39
- 238000003860 storage Methods 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 208000027418 Wounds and injury Diseases 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 12
- 210000004907 gland Anatomy 0.000 claims description 12
- 230000002950 deficient Effects 0.000 claims description 10
- 230000006378 damage Effects 0.000 claims description 9
- 208000010727 head pressing Diseases 0.000 claims description 8
- 208000014674 injury Diseases 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 238000005286 illumination Methods 0.000 description 6
- 238000012790 confirmation Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 208000014735 Tooth injury Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 208000033985 Device component issue Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
-
- 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
- B07C5/04—Sorting according to size
- B07C5/10—Sorting according to size measured by light-responsive means
-
- 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
- B07C5/361—Processing or control devices therefor, e.g. escort memory
-
- 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
- B07C5/361—Processing or control devices therefor, e.g. escort memory
- B07C5/362—Separating or distributor mechanisms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0608—Height gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Feeding Of Articles To Conveyors (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a screw straightness detection mechanism and screw automatic detection equipment. Screw straightness accuracy detection mechanism includes: the finger cylinder clamp is fixed on the clamp mounting lower plate, the clamp mounting lower plate is connected with the clamp mounting upper plate through the connecting track and drives the clamp mounting upper plate to move back and forth through the cylinder; the upper plate of the clamp is driven to move up and down by a driving mechanism; the pressing shaft penetrates through the spring and is installed on a pressing shaft connecting plate through a linear bearing, and the pressing shaft connecting plate is fixed above the detection position through a pressing shaft installing plate; the upper end of the pressing shaft penetrates through the pressing shaft connecting plate, a contact plate and a locking gasket are mounted at the upper end of the pressing shaft, and a contact sensor is arranged on the contact plate; the straightness detection tool is connected to a track of a jacking track plate through a sliding block and is aligned to the central axis where the pressing shaft is located; the slider is connected with the detection tool in a driving mode, and the straightness detection tool is driven to slide up and down in a straight line through the detection tool.
Description
Technical Field
The invention relates to the field of machinery, in particular to a screw straightness detection mechanism and automatic screw detection equipment with the screw straightness detection mechanism.
Background
The delivery of the screw needs to carry out various accuracy standard detection. At present, the screw is detected by adopting a manual professional tool. In particular, when the straightness of the screw is detected, the side-approaching measurement is carried out through a standard ruler. Such manual measurements may have some unavoidable deviations due to subjective awareness or operating specifications of the inspector, and may be inaccurate and inefficient in inspection. In the face of large-batch products, detection is finished by adopting a manual sampling inspection mode at present. The quality of all products can not be guaranteed to reach the standard by the sampling inspection mode, the working efficiency is low, and the accuracy is low.
Disclosure of Invention
Because prior art has above-mentioned technical defect, this application provides a screw straightness accuracy detection mechanism, and its aim at overcomes the detection mode work efficiency among the prior art and hangs down, and the rate of accuracy is low problem.
The application discloses screw straightness accuracy detection mechanism, it includes:
the finger cylinder clamp is fixed on a clamp mounting lower plate, the clamp mounting lower plate is connected with the clamp mounting upper plate through a connecting track, and the clamp mounting lower plate is driven by a cylinder to move back and forth relative to the clamp mounting upper plate along the connecting track; the upper clamp mounting plate is driven to move up and down by a driving mechanism;
the pressing shaft penetrates through the spring and is installed on a pressing shaft connecting plate through a linear bearing, and the pressing shaft connecting plate is fixed above the detection position through a pressing shaft installing plate; the upper end of the pressing shaft penetrates through the pressing shaft connecting plate, a contact plate and a locking gasket are mounted at the upper end of the pressing shaft, and a contact sensor is arranged on the contact plate;
the straightness detection tool is connected to a track of a jacking track plate through a sliding block and is aligned to the central axis of the pressing shaft; the slider is connected with the checking fixture in a driving mode, and the straightness checking fixture is driven to slide up and down in a straight line through the checking fixture.
Preferably, the straightness checking fixture is combined with the slider through a hoop, the slider is connected to the checking fixture drive through a magnetic part, and the magnetic part comprises:
the iron attracting box is internally provided with a magnet, the connecting end of the iron attracting box penetrates through the opening of the jacking track plate to be in driving connection with the checking fixture positioned on the back surface of the jacking track plate, and the iron attracting box main body is positioned on the front surface of the jacking track plate;
the magnet plate is positioned at the bottom of the sliding block, and one end part of the magnet plate extends out and is adsorbed at the bottom of the magnet box main body;
the magnet plate is driven by the iron-attracting box to pull the sliding block to move up and down along with the driving of the checking fixture; once the resistance borne by the straightness detection tool is larger than the magnet attraction force, the magnet plate is separated from the magnet attracting box, and the sliding block loses the thrust of the magnet plate and falls back to the original position.
Preferably, the driving mechanism comprises a stepping motor and a screw rod connected with the stepping motor, the stepping screw rod is connected with the clip mounting upper plate, and the stepping motor drives the clip mounting upper plate to move by driving the stepping screw rod.
Preferably, the checking fixture drive comprises a servo motor, a bearing seat, a servo screw rod and a lifting plate, the servo motor is fixed at the bottom of the jacking track plate through a mounting plate, the bearing seat is fixed at the back of the jacking track plate, the servo screw rod is connected to the servo motor, the lifting plate is connected to the servo screw rod, and the lifting plate is combined on a track at the back of the jacking track plate.
Due to the adoption of the technical means, the screw straightness detection mechanism can realize accurate measurement, avoid the subjective error of manual measurement and improve the detection efficiency.
The application also discloses automatic screw detection equipment which comprises a feeding station, a detection station, a discharging station and a control system, wherein the feeding station is used for quickly feeding; the detection station is used for completing data detection of the screw; the blanking station is used for classifying and neatly arranging the screws; the control system is used for receiving, analyzing and controlling the operation of equipment on each station; the detection station is provided with:
the screw receiving rotary disc is provided with a gear groove along the outer edge of the screw receiving rotary disc, the screw receiving rotary disc is driven to rotate through a power mechanism, and the screw receiving rotary disc receives the feeding station and the discharging station;
the screw height or/and diameter detector is arranged beside the screw receiving turntable and used for detecting the height or/and diameter of the screw on the detection position corresponding to the screw in the tooth position groove;
the screw straightness detection mechanism is arranged beside the screw receiving turntable and is used for detecting the straightness of the screw in the tooth space groove corresponding to the detection position of the screw;
the tooth damage detector is arranged beside the screw receiving rotary disc and is used for detecting whether teeth of the screw corresponding to the detection position in the tooth position groove are damaged or not;
the screw height or/and diameter detector, the screw straightness detection mechanism and the dental injury detector transmit detection data to the control system, and the control system judges whether the detected screw is qualified or not and records the position of the screw according to the comparison of the detection data and a standard value
Preferably, the screw height or/and diameter detector includes:
the first screw head pressing mechanism is arranged beside the screw receiving turntable and is used for pressing the head of a screw in the tooth space groove on the detection position corresponding to the first screw head pressing mechanism;
the screw height or/and diameter image detection mechanism is positioned behind the screw head pressing machine and used for shooting the screws pressed by the first pressing mechanism of the screw head to obtain height or/and diameter numerical values and transmitting the height or/and diameter numerical values to the control system.
Preferably, the dental wound detector comprises a screw head second pressing mechanism and a dental wound image detection mechanism, wherein:
the screw head second pressing mechanism is arranged beside the screw receiving turntable and is used for pressing the head of a screw in the tooth space groove on the detection position corresponding to the screw head second pressing mechanism;
dental injury image detection mechanism includes:
the fixing seat is arranged and fixed below the screw receiving rotary disc, and a circular positioning disc is arranged on the fixing seat; and the camera is fixed on the circular positioning plate through a connecting support, aligns to the tooth part of the screw pressed by the second pressing mechanism at the head part of the screw, acquires an image of the tooth part and transmits the image to the control system.
Preferably, the blanking station comprises:
the blanking device is arranged beside the screw receiving rotary disc and comprises a good product blanking mechanism and a defective product blanking mechanism;
the direct vibration type discharging track mechanism comprises an inclined guide rail and a direct vibration type flat conveyer connected with the inclined guide rail, wherein the direct vibration type flat conveyer drives the screw to slide to the bottom of the inclined guide rail along the inclined guide rail;
the box swinging mechanism is fixed on a bottom plate and is positioned at the bottom of the inclined guide rail, and the box swinging mechanism clamps and conveys the screws sliding to the bottom of the inclined guide rail into the corresponding storage box;
portable storage mechanism, it is fixed in the mechanism's stroke of putting, portable storage mechanism includes:
the upper end surface of the bottom frame is provided with a track surface;
the tray is connected to the track on the track surface through a sliding block and is driven to move through a driving mechanism;
a storage case placed on the tray.
Preferably, a screw protection disc is arranged beside the screw receiving turntable, and the radian of the inner side edge of the screw protection disc is consistent with that of the outer side edge of the screw receiving turntable.
Preferably, the feeding station comprises a feeding machine and a direct vibration type feeding track; the direct vibration type feeding track comprises:
the upper end of the feeding guide rail is connected with the feeding machine, and the lower end of the feeding guide rail is butted with the screw receiving turntable of the detection station; a gland is arranged on the feeding guide rail, a gap is kept between the gland and the upper surface of the feeding guide rail, and the gap is determined by the fact that the upper end part of a single screw can pass through;
the material protection mechanism is arranged at the lower end of the feeding guide rail and is used for preventing the screw from clamping the screw material receiving turntable; protect material mechanism includes:
the material protection drive is fixed on one side of the feeding guide rail through a bracket;
the material protection push plate is connected to the material protection drive and arranged between the feeding guide rail and the gland, and the material protection push plate covers or gives way out of the guide groove of the feeding guide rail under the drive of the material protection drive so as to prevent or release the screw in the guide groove;
and the direct vibration machine is connected below the feeding guide rail and drives the feeding guide rail to vibrate and transmit the screw in the guide groove.
In addition, the automatic screw detection equipment can realize automatic detection of screws, detection items include screw height, diameter, straightness accuracy, tooth injury, head and the like, detection efficiency and accuracy of the screws are improved, and requirements of mass production can be met.
Drawings
Fig. 1 is a schematic overall structure diagram of the screw automatic detection device of the present application;
FIG. 2 is an internal schematic view of the embodiment of FIG. 1 of the present application;
fig. 3 is a schematic structural view of a direct vibration type feeding track of a feeding station of the present application;
FIG. 4 is a first schematic structural diagram of a screw straightness detection mechanism according to the present application;
fig. 5 is a second structural schematic diagram of the screw straightness detection mechanism of the present application;
FIG. 6 is an exploded view of the screw straightness detection mechanism of the present application;
FIG. 7 is a schematic view of a camera of the dental wound image detection mechanism of the present application;
FIG. 8 is a partial structural view of the screw retaining plate of the present application;
FIG. 9 is a straight vibrating discharge rail of the present application;
FIGS. 10A and 10B are schematic structural views of the swing-in mechanism of the present application;
fig. 11 is a schematic structural view of the mobile storage mechanism of the present application.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic view of an overall structure of the screw automatic detection device of the present application, and fig. 2 is a schematic view of an interior of fig. 1 of the present application. The automatic detection equipment of screw of this application has included material loading station A, detection station B and unloading station C and a control system (PLC). The feeding station A is used for rapid feeding; the detection station B is used for completing data detection on the screw D; the blanking station C is used for classifying and neatly arranging the screws; and the control system PLC is used for receiving, analyzing and controlling the operation of equipment on each station. The feeding station A and the detection station B are covered in the sound-proof housing 1, and noise in the operation room is reduced. As shown in fig. 2, the feeding station a and the detection station B are disposed above the cabinet 2, and each power device and the like are disposed inside the cabinet 2.
As shown in fig. 2, the feeding station a of the present application includes a vibration disk feeder 3 and a direct vibration feeding track 4. The upper end of the direct vibration type feeding track 4 is connected with the vibration disc feeder 3, and screws transmitted by the vibration disc feeder 3 are conveyed to the lower end of the direct vibration type feeding track 4.
Referring to fig. 3, the vertical vibration feeding track 4 includes a feeding guide rail 41, a pressing cover 42, a material protection mechanism 43, and a vertical vibration machine 44. The feed rail 41 is set obliquely so that the screws D in the guide grooves of the feed rail 41 can slide down under the influence of gravity. The upper end of the feeding guide rail 41 is connected with the vibration disc feeder 3, and the lower end of the feeding guide rail 41 is in butt joint with the screw receiving rotary disc 5 of the detection station B. The feeding guide rail 41 is provided with a gland 42, the gland 42 and the upper surface of the feeding guide rail 41 keep a gap, and the gap is based on that the upper end part of a single screw can pass through, so that the screws can be ensured to be arranged in the guide grooves of the feeding guide rail 41 in a single and orderly manner. In order to realize the turning design of the gland 42, the bottom of the gland 42 is connected with a short shaft 45 through a connecting shaft, so that the high-cost manufacture of the gland 42 is avoided. The material protection mechanism 43 is arranged at the lower end of the feeding guide rail 41, and the material protection mechanism 43 is used for preventing the screw D from being clamped on the screw receiving turntable 5. As shown in fig. 3, the material protection mechanism 43 includes a material protection driving device 431 and a material protection pushing plate 432. The material guard drive 431 of the present application is a cylinder structure that is fixed to one side of the feed rail 41 by a bracket. The material protection push plate 432 is connected to the material protection drive 431. The material protection push plate 432 is arranged between the feeding guide rail 41 and the gland 42. The material protection push plate 432 is driven by the material protection drive 431 to cover or give way out of the guide groove of the feeding guide rail 41 so as to prevent or release the screw D in the guide groove. The vertical vibration machine 44 is connected below the feeding guide rail 41 and drives the feeding guide rail 41 to vibrate and transmit the screw D to move in the guide groove. The straight mode pay-off track 4 that shakes has combined the slope to add the mode of vibration, and the vibration can the pay-off, and the slope also can the pay-off, and the two closes firstly will guarantee that the conveying in the pay-off in-process is smooth, and slope track screw is together to have a holding down force, can push this preceding material to target in place fast, and the feeding can be faster, has improved automated inspection's speed.
And optical fiber sensors 46 are arranged on two sides close to the lower end part of the feeding guide rail 41, and the optical fiber sensors 46 are used for detecting whether the screws exist in the guide grooves of the feeding guide rail 41 or not and sending feeding confirmation information to the control system PLC. And the control system PLC controls the working states of the direct vibration machine of the vibration disc feeder 3 and the direct vibration type feeding track 4 according to the feeding confirmation information.
As shown in fig. 2, the lower end of the feeding guide rail 41 is butted against the screw receiving turntable 5. A feeding sensor is arranged at the lower end of the butt joint of the lower end part of the feeding guide rail 41 and the screw receiving turntable 5, and the feeding sensor is used for detecting whether the screw D exists in a tooth space groove of the butt joint feeding of the screw receiving turntable 5 and generating feeding confirmation information to the control system PCL. And the control system PCL controls the direct vibration type feeding track 4 and the screw receiving turntable 5 to work according to the feeding confirmation information.
As shown in fig. 2, a screw receiving turntable 5, a screw height and diameter detector 6, a screw straightness detection mechanism 7, and a tooth wound detector 8 are disposed at the detection station B, so as to comprehensively detect the screw D.
As shown in fig. 2, the screw receiving rotary table 5 is fixed at the middle position of the detection station B, and all the detection devices are arranged along the outer edge thereof. Referring to fig. 2 and 8, a plurality of tooth grooves 51 are formed in the outer edge of the screw receiving rotary disk 5, and the tooth grooves 51 are used for receiving screws D. The screw receiving rotary disc 5 is driven to rotate by a power mechanism at the bottom, and the power mechanism is also controlled by a control system PLC. Referring to fig. 8, in order to prevent the screw D from falling due to centrifugal force in the process of rotating the screw receiving turntable 5, a screw protection disc 9 is specially provided, and the radian of the inner edge of the screw protection disc 9 is consistent with that of the outer edge of the screw receiving turntable 5.
Referring to fig. 2, a screw height and diameter detector 6 is arranged at a first detection position of the screw receiving rotary disc 5. The screw height and diameter detector 6 includes a screw head first pressing mechanism 61, a screw height image detection mechanism 62, and a screw diameter image detection mechanism 63.
The first pressing mechanism 61 at the head of the screw is arranged beside the screw receiving turntable 5. The first screw head pressing mechanism 61 is used for pressing the head of the screw in the tooth space groove on the detection position corresponding to the first screw head pressing mechanism 61, so that the accuracy of subsequent detection is ensured.
The screw height image detection mechanism 62 and the screw diameter image detection mechanism 63 are respectively arranged behind the first pressing mechanism 61 of the screw head, and are used for shooting the screws pressed by the first pressing mechanism 61 of the screw head, acquiring the height and diameter numerical values of the screws and transmitting the numerical values to the control system.
Referring to fig. 2, a screw straightness detection mechanism 7 is further provided in the present application, and is configured to detect the straightness of the screw in the tooth space groove at a position corresponding to the detection position. The screw straightness detection mechanism 7 is arranged beside the screw receiving turntable 5 and is positioned at the next station of the screw height image detection mechanism 62 and the screw diameter image detection mechanism 63.
The detailed structure of the screw linearity detection mechanism 7 is described as follows:
referring to fig. 4-6, finger cylinder clamp 71 is secured to a clamp mounting lower plate 72. The lower clip mounting plate 72 is connected to the upper clip mounting plate 73 by a connecting rail 74, and the lower clip mounting plate 72 is moved back and forth along the connecting rail 74 relative to the upper clip mounting plate 73 by an air cylinder 75. The clip mounting upper plate 73 is driven to move up and down by a driving mechanism. The driving mechanism comprises a stepping motor 76 and a screw rod 77 connected with the stepping motor 76, the stepping screw rod 77 is connected with the clamp mounting upper plate 73, and the stepping motor 76 drives the stepping screw rod 77 to drive the clamp mounting upper plate 73 to move up and down.
As shown in fig. 4, the pressing shaft 78 passes through the spring 79 and is mounted on the pressing shaft attachment plate 711 by a linear bearing 710. The pressing shaft attachment plate 711 is fixed above the detection position by a pressing shaft attachment plate 712. The upper end of the pressing shaft 78 passes through the pressing shaft connecting plate 711, and a contact plate 713 and a lock washer 714 are mounted on the upper end portion of the pressing shaft 78, and a contact sensor is provided on the contact plate 713. The contact sensor senses the locking state of the locking washer and sends locking confirmation information to the control system PLC.
As shown in fig. 4 to 6, the straightness fixture 703 is coupled to the slider 715 through an anchor ear 704. The slider 715 is attached to a rail 7161 of a jacking rail plate 716. The straightness gauge 703 is aligned with the central axis of the pressing shaft 78. The slider 715 is in driving connection with the checking fixture, and the straightness checking fixture 703 is driven to linearly slide up and down by the checking fixture.
Referring to fig. 6 in detail, the sliding block 715 is connected to the checking fixture drive through a magnetic member, and the magnetic member includes: a magnet case 717 in which a magnet 716 is provided, and a magnet plate 718. The iron-attracting box connecting end 7171 penetrates through the opening 7161 of the jacking rail plate 716 to be in driving connection with the checking fixture positioned on the back side of the jacking rail plate 716, and the iron-attracting box main body 7172 is positioned on the front side of the jacking rail plate 716. The magnet plate 718 is located at the bottom of the slider 715, and one end of the magnet plate 718 is attached to the bottom of the main body 7172 of the iron-attracting box. In this embodiment, three magnet plates 718 are used together. The magnet plate 718 is driven by the iron-attracting box 717 to push the sliding block 715 to move up and down along with the driving of the checking fixture. Once the resistance force applied to the straightness testing fixture 703 is greater than the magnet attraction force, the magnet plate 718 is separated from the iron attracting box 717, and the sliding block 715 loses the thrust force of the magnet plate 718 and falls back to the initial position. The magnetic part can effectively protect the straightness detection tool 703 in a material clamping state.
As shown in fig. 5 and 6, the inspection device driver includes a servo motor 719, a bearing seat 720, a servo screw 721 and a lifting plate 722. The servo motor 719 is fixed to the bottom of the jacking track plate 716 through a servo motor mounting plate 723, the bearing seat 720 is fixed to the back of the jacking track plate 716, the servo screw rod 721 is connected to the servo motor 719, the lifting plate 722 is connected to the servo screw rod 721, and the lifting plate 722 is combined to a track on the back of the jacking track plate 716.
The working principle of the screw straightness detection mechanism 7 is as follows:
when the screw is driven by the screw receiving rotary disc 5 to rotate to the detection station of the screw linearity detection mechanism 7, the stepping motor 76 rotates to drive the stepping screw rod 77 to move downwards. The stepping screw 77 drives the pressing shaft mounting plate 712 to move downward together. The hold down shaft 78 follows the downward movement. When the hold down shaft 78 contacts the head of the screw D, the spring D is compressed, the lock washer 714 is lifted, the hold down shaft mounting plate 712 is lowered to the set position, and the stepper motor 76 stops moving. The cylinder 75 drives the clamp mounting lower plate 72 to move forwards, and the finger cylinder clamp 42 clamps the screw D, so that the screw D is prevented from being inclined in the subsequent testing process and the precision is prevented from being influenced. The servo motor 719 rotates to drive the lifting plate 722 to move upward. The magnet box 717 also attracts the magnet plate 718 to move upward with the lifting plate 722. The magnet plate 718 pushes the slider 715 to drive the anchor ear 704 and the linearity testing fixture 703 to move upward together. When the head of the screw D starts to enter the linearity checking fixture 703, a sensor arranged at the finger cylinder clamp 71 senses and sends a signal to the finger cylinder clamp 71, the finger cylinder clamp 71 is released, and the cylinder 75 pushes the clamp mounting lower plate 72 back to the original position. The linearity check tool 703 continues to be raised, and when it reaches a set determination position (a detection position set in advance), the servo motor 719 stops moving. At this time, if the straightness of the screw D is qualified, the screw D can be completely inserted into the straightness detection tool 703; if the screw D is not qualified, a section of the screw D is exposed outside, the pressing shaft 78 is jacked up by the screw D, and the head of the unqualified screw D is higher than that of the qualified screw D. When the stepping motor 76 rotates reversely, the pressing shaft 78 will rise slowly, and at this time, the short head (qualified screw D) of the screw D will be disengaged first, the disengagement signal is sensed by the locking washer 714 and the contact sensor of the contact plate 713 at the moment of disengagement, and the disengagement signal is sent to the control system PLC, and the control system PLC calculates the height of the screw head according to the time sequence of the disengagement signal and the pulse of the stepping motor 76, and the screw head is determined as a defective product if the height exceeds the standard height. And the control system PLC records the judged result and controls the subsequent blanking stations to perform classified blanking.
Referring to fig. 2, the next detection process of the screw straightness detection mechanism 7 is the tooth wound detector 8. The tooth injury detector 8 is arranged beside the screw receiving rotary disc 5 and is used for detecting whether teeth of the screw on the detection position corresponding to the tooth position groove are damaged or not. The dental injury detector 8 includes a screw head second pressing mechanism 81 and a dental injury image detecting mechanism 82.
Referring to fig. 2, the second pressing mechanism 81 for the head of the screw includes a fixing frame and a telescopic pressing shaft. The fixed frame is arranged above the outer edge of the screw receiving turntable and is just opposite to the gear groove. The telescopic pressing shaft is fixed on the fixing frame and driven by the motor to move up and down, and the telescopic pressing shaft is opposite to the screw in the gear groove. The second pressing mechanism 81 for the head of the screw is mainly used for pressing the head of the gear groove at the detection position, so that the measurement accuracy is improved.
As shown in fig. 2 and 7, the dental injury image detection mechanism 82 includes a fixing base 821, a circular positioning plate 822, and a camera 823. The fixing base 821 is arranged and fixed below the screw receiving rotary disc 5, and a circular positioning disc 822 is arranged on the fixing base 821. Four connecting brackets 824 are uniformly distributed on the circular positioning plate 822, and one camera 823 is fixed on each connecting bracket 824 through a sliding rail 825. Each camera 823 aligns the tooth of the screw pressed by the second pressing mechanism 81 on the head of the screw and acquires an image of the tooth and transmits the image to the control system.
Referring to fig. 2, the detection station of the present application further includes a screw head image detector 10 for detecting the slot or diameter of the head of the screw D. The screw head image detector 10 includes an adjusting vertical rod 101, an annular illumination portion 103, a detection camera 102, and the like. The bottom of the adjusting vertical rod 101 is movably connected beside the screw receiving turntable 5. Annular illumination portion 103 connect in adjust on the pole setting 101 and be located directly over the gear groove, annular illumination portion produces illumination. The detection camera 102 is fixed at the top end of the adjusting vertical rod 101, and is right opposite to the annular illumination part 103 and right above the gear groove and used for shooting a head image of the screw to be detected reflected in the annular ring of the annular illumination part. The detection camera 102 sends the acquired head image to the control system PLC.
Please refer to fig. 2 and fig. 8 to 10, which illustrate the blanking station C of the present application. The blanking station C comprises a blanking device 11, a direct vibration type discharging track mechanism 12, a box swinging mechanism 13 and a movable storage mechanism 14.
As shown in fig. 8, the blanking device 11 is coupled to the protection plate 9. The blanking device 11 includes a good product blanking mechanism 111 and a defective product blanking mechanism 112.
The defective blanking mechanism 112 includes a blanking driving mechanism and a shifting member 1121. . The shifting part 1121 is arranged at the upper part of the protective disc 9 through a bolt, and a defective product feed opening is arranged at the corresponding position of the protective disc 9. Along with the rotation of the screw receiving rotary disc 5, the end part of the shifting piece 1121 is bent to take the defective screw D in the tooth position groove away from the tooth position groove and fall to the defective product feed opening, and a material receiving box is arranged below the defective product feed opening.
The good product discharging mechanism 111 includes a discharging cylinder 1111, a material ejecting rod 1112, and a material pushing mechanism. The material pushing mechanism is located at a blanking opening of a good product and is located below the screw receiving rotary disc 5. The function of the material ejecting rod 1112 is that when a defective product is encountered, the material ejecting rod 1112 is closed, and a screw can smoothly turn to the defective product blanking mechanism 112 so as not to fall off; when a good product is encountered, the ejector 1112 is opened, and the screw is pushed into the discharge rail by a pushing mechanism. The blanking cylinder 1111 is controlled by the control system. The upper end of the direct vibration type discharging rail mechanism 12 is butted below the good product discharging mechanism 111. The direct vibration type discharging rail mechanism 12 includes an inclined rail 121 and a direct vibration type flat conveyor 122 connected to the inclined rail 121. The screw D falls into the inclined rail 121, and the straight vibrating conveyor 122 drives the screw D to slide along the inclined rail 121 to the bottom of the inclined rail. The box swinging mechanism 13 is located at the bottom of the inclined guide rail 121, and the box swinging mechanism 13 clamps and conveys the screw D sliding to the bottom of the inclined guide rail 121 to the corresponding movable storage mechanism. As shown in fig. 10A and 10B, the swing-in mechanism 13 grips the screws D by the cylinder clamps 131, and after turning over, the screws D are placed in order in the mobile storage mechanism 14.
The automatic screw detection equipment can realize automatic detection of screws, detection items include screw height, diameter, straightness accuracy, tooth injuries, head and the like, detection efficiency and accuracy of the screws are improved, and requirements of mass production can be met.
The above-described embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. All equivalent changes and modifications of the invention that may occur to those skilled in the art are intended to be covered by the appended claims.
Claims (10)
1. The utility model provides a screw straightness accuracy detection mechanism which characterized in that includes:
the finger cylinder clamp is fixed on a clamp mounting lower plate, the clamp mounting lower plate is connected with the clamp mounting upper plate through a connecting track, and the clamp mounting lower plate is driven by a cylinder to move back and forth relative to the clamp mounting upper plate along the connecting track; the upper clamp mounting plate is driven to move up and down by a driving mechanism;
the pressing shaft penetrates through the spring and is installed on a pressing shaft connecting plate through a linear bearing, and the pressing shaft connecting plate is fixed above the detection position through a pressing shaft installing plate; the upper end of the pressing shaft penetrates through the pressing shaft connecting plate, a contact plate and a locking gasket are mounted at the upper end of the pressing shaft, and a contact sensor is arranged on the contact plate;
the straightness detection tool is connected to a track of a jacking track plate through a sliding block and is aligned to the central axis of the pressing shaft; the slider is connected with the checking fixture in a driving mode, and the straightness checking fixture is driven to slide up and down in a straight line through the checking fixture.
2. The screw straightness detection mechanism according to claim 1, wherein the straightness detection tool is coupled to the slider through a hoop, the slider is connected to the detection tool driving part through a magnetic part, and the magnetic part comprises:
the iron attracting box is internally provided with a magnet, the connecting end of the iron attracting box penetrates through the opening of the jacking track plate to be in driving connection with the checking fixture positioned on the back surface of the jacking track plate, and the iron attracting box main body is positioned on the front surface of the jacking track plate;
the magnet plate is positioned at the bottom of the sliding block, and one end part of the magnet plate extends out and is adsorbed at the bottom of the magnet box main body;
the magnet plate is driven by the iron-attracting box to pull the sliding block to move up and down along with the driving of the checking fixture; once the resistance borne by the straightness detection tool is larger than the magnet attraction force, the magnet plate is separated from the magnet box, and the sliding block loses the tension of the magnet plate and falls back to the initial position.
3. The screw linearity detecting mechanism of claim 1, wherein said driving mechanism comprises a stepping motor and a screw rod connected with the stepping motor, said stepping screw rod is connected with said clip mounting plate, and said stepping motor drives said clip mounting plate to move by driving said stepping screw rod.
4. The screw straightness detection mechanism according to claim 1, wherein the gauge driver includes a servo motor, a bearing seat, a servo screw rod and a lifting plate, the servo motor is fixed to the bottom of the jacking track plate through a mounting plate, the bearing seat is fixed to the back of the jacking track plate, the servo screw rod is connected to the servo motor, the lifting plate is connected to the servo screw rod, and the lifting plate is combined to a track on the back of the jacking track plate.
5. An automatic screw detection device comprises a feeding station, a detection station, a discharging station and a control system, wherein the feeding station is used for feeding materials quickly; the detection station is used for completing data detection of the screw; the blanking station is used for classifying and neatly arranging the screws; the control system is used for receiving, analyzing and controlling the operation of equipment on each station; the device is characterized in that the detection station is provided with:
the screw receiving rotary disc is provided with a gear groove along the outer edge of the screw receiving rotary disc, the screw receiving rotary disc is driven to rotate through a power mechanism, and the screw receiving rotary disc receives the feeding station and the discharging station;
the screw height or/and diameter detector is arranged beside the screw receiving turntable and used for detecting the height or/and diameter of the screw on the detection position corresponding to the screw in the tooth position groove;
the screw straightness detection mechanism according to any one of claims 1 to 4, disposed beside the screw receiving turntable, for detecting the straightness of the screw in the tooth space groove corresponding to the detection position;
the tooth damage detector is arranged beside the screw receiving rotary disc and is used for detecting whether teeth of the screw corresponding to the detection position in the tooth position groove are damaged or not;
the screw height or/and diameter detector, the screw straightness detection mechanism and the tooth wound detector transmit detection data to the control system, and the control system judges whether the detected screw is qualified or not and records the position of the screw according to the comparison of the detection data and a standard value.
6. The automated screw detection apparatus of claim 5, wherein the screw height or/and diameter detector comprises:
the first screw head pressing mechanism is arranged beside the screw receiving turntable and is used for pressing the head of a screw in the tooth space groove on the detection position corresponding to the first screw head pressing mechanism;
the screw height or/and diameter image detection mechanism is positioned behind the screw head pressing machine and used for shooting the screws pressed by the first pressing mechanism of the screw head to obtain height or/and diameter numerical values and transmitting the height or/and diameter numerical values to the control system.
7. The automated screw detection apparatus of claim 5, wherein the dental injury detector comprises:
the screw head second pressing mechanism is arranged beside the screw receiving turntable and is used for pressing the head of a screw in the tooth space groove on the detection position corresponding to the screw head second pressing mechanism;
dental injury image detection mechanism includes:
the fixing seat is arranged and fixed below the screw receiving rotary disc, and a circular positioning disc is arranged on the fixing seat;
and the camera is fixed on the circular positioning plate through a connecting support, aligns to the tooth part of the screw pressed by the second pressing mechanism at the head part of the screw, acquires an image of the tooth part and transmits the image to the control system.
8. The automatic screw detection equipment of claim 5, wherein the blanking station comprises:
the blanking device is arranged beside the screw receiving rotary disc and comprises a good product blanking mechanism and a defective product blanking mechanism;
the direct vibration type discharging track mechanism comprises an inclined guide rail and a direct vibration type flat conveyer connected with the inclined guide rail, wherein the direct vibration type flat conveyer drives the screw to slide to the bottom of the inclined guide rail along the inclined guide rail;
the box swinging mechanism is fixed on a bottom plate and is positioned at the bottom of the inclined guide rail, and the box swinging mechanism clamps and conveys the screws sliding to the bottom of the inclined guide rail into the corresponding movable material storage mechanism;
portable storage mechanism, it is fixed in the mechanism's stroke of putting, portable storage mechanism includes:
the upper end surface of the bottom frame is provided with a track surface;
the tray is connected to the track on the track surface through a sliding block and is driven to move through a driving mechanism;
and the storage box is placed on the tray and used for arranging the screws.
9. The automatic screw detection equipment of claim 5, wherein a screw protection disc is arranged beside the screw receiving turntable, and the radian of the inner side edge of the screw protection disc is consistent with that of the outer side edge of the screw receiving turntable.
10. The automatic screw detection equipment of claim 5, wherein the loading station comprises a feeder and a direct vibration type feeding track; the direct vibration type feeding track comprises:
the upper end of the feeding guide rail is connected with the feeding machine, and the lower end of the feeding guide rail is butted with the screw receiving turntable of the detection station; a gland is arranged on the feeding guide rail, a gap is kept between the gland and the upper surface of the feeding guide rail, and the gap is determined by the fact that the upper end part of a single screw can pass through;
the material protection mechanism is arranged at the lower end of the feeding guide rail and is used for preventing the screw from clamping the screw material receiving turntable; protect material mechanism includes:
the material protection drive is fixed on one side of the feeding guide rail through a bracket;
the material protection push plate is connected to the material protection drive and arranged between the feeding guide rail and the gland, and the material protection push plate covers or gives way out of the guide groove of the feeding guide rail under the drive of the material protection drive so as to prevent or release the screw in the guide groove;
and the direct vibration machine is connected below the feeding guide rail and drives the feeding guide rail to vibrate and transmit the screw in the guide groove.
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| CN201911228142.2A CN112893154B (en) | 2019-12-04 | 2019-12-04 | Screw straightness accuracy detection mechanism and screw automation detection equipment |
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| CN201911228142.2A CN112893154B (en) | 2019-12-04 | 2019-12-04 | Screw straightness accuracy detection mechanism and screw automation detection equipment |
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