A system for batch detection of internal threads of workpieces

Abstract

The application relates to a workpiece internal thread batch detection system and relates to the technical field of nut internal thread detection. The detection system comprises a machine body, a feeding device and a detection device. The detection device comprises a detection rod, a clamping mechanism for clamping the detection rod, a vibration mechanism, a guide rod, a go-no-go gauge, a telescopic assembly, and a pushing mechanism. The feeding device is used for conveying nuts to the guide rod. The go-no-go gauge is arranged on the detection rod and connected with the guide rod. The pushing mechanism is used for pushing unqualified nuts to fall off the go-no-go gauge. The application is characterized in that the nut conveying is placed on the top end of the go-no-go gauge, qualified nuts are collected after passing through the go-no-go gauge, when unqualified nuts exist, the pushing mechanism clamps the guide rod, the go-no-go gauge is separated from the guide rod, the pushing mechanism pushes the unqualified nuts on the top of the go-no-go gauge to fall off the go-no-go gauge and is collected, so that the unqualified nuts are removed, the detection efficiency of the nuts is improved, and comprehensive detection of the nuts is realized.

Description

Technical Field

[0001] This application relates to the technical field of batch inspection of nuts, and in particular to a batch inspection system for internal threads of workpieces. Background Technology

[0002] After the nut is machined, in order to ensure the overall performance of the mechanical equipment installed with the nut, the internal thread of the nut needs to be inspected.

[0003] Current inspection methods still rely on manual labor, using go-gauges to inspect the internal threads of nuts. This process is very inconvenient, and in industrial mass production, the number of nuts is extremely large. Manual inspection is time-consuming, so only random sampling can be performed, resulting in low inspection efficiency and incomplete inspection. Summary of the Invention

[0004] To improve inspection efficiency and achieve comprehensive inspection of nuts, this application provides a batch inspection system for internal threads of workpieces.

[0005] Firstly, this application provides a batch inspection system for internal threads of workpieces, which adopts the following technical solution: A batch inspection system for internal threads of workpieces includes a machine body and a feeding device and an inspection device mounted on the machine body. The inspection device includes: The detection rod is vertical and has two clamping points spaced vertically apart; The clamping mechanism is used to alternately clamp two clamping points and to position the detection rod. A vibration mechanism is used to vibrate the detection rod; A guide rod is coaxially arranged with the detection rod and located above the detection rod, and both have the same diameter. The feeding device is used to guide and deliver the nut onto the guide rod. The go gauge is mounted on the test rod via a flexible telescopic component and is detachably connected to the guide rod. It is used to test the internal thread of a nut. A qualified nut rotates under vibration and gravity and its thread connects to the go gauge and finally passes through the go gauge. A defective nut is positioned against the go gauge. The pushing mechanism is used to push unqualified nuts off the go gauge. When there are unqualified nuts, the pushing mechanism first clamps the guide rod to position the guide rod and the nut, then pushes the go gauge and the unqualified nut downwards, causing the go gauge to disengage from the guide rod. The pushing mechanism then starts to push the unqualified nut off the go gauge for collection. The pushing mechanism moves back first to move the go gauge upwards to insert and position it with the guide rod, then unlocks and clamps the guide rod before moving away from the guide rod.

[0006] By adopting the above technical solution, the feeding device is used to vibrate and feed nuts onto the guide rod. The nuts are placed against the top of the go gauge. The vibration mechanism is activated to vibrate the detection rod, the go gauge, and the guide rod, so that qualified nuts rotate and connect to the go gauge and then disengage from it. The nuts are then sleeved onto the detection rod and fall onto the clamping mechanism. The clamping mechanism clamps the upper and lower clamping points one after the other, and then repeatedly changes the clamping points, so that qualified nuts fall downward from the detection rod and are collected, thereby reducing the detection of qualified nuts and collecting them.

[0007] The defective nut is positioned against the top of the go gauge. A push mechanism is activated, moving closer to and clamping the guide rod. Simultaneously, the push mechanism inserts between the defective nut and the adjacent nut above it, preventing the upper nut from moving downwards. The push mechanism then pushes the go gauge and the defective nut downwards, causing the go gauge to disengage from the guide rod and creating a gap for the defective nut to pass through. The push mechanism then pushes the defective nut at the top of the go gauge upwards, causing it to fall off and be collected, thus removing the defective nut. The push mechanism then moves back, disengaging from the go gauge and guide rod sequentially. Upon disengagement, the go gauge, under elastic force, moves back and re-inserts onto the guide rod, maintaining the connection between the detection rod, go gauge, and guide rod as a whole. Finally, the push mechanism disengages from the guide rod, and the nut continues to move downwards for inspection. This process is repeated, automatically removing defective nuts, significantly reducing the time spent removing them, improving nut inspection efficiency, and enabling comprehensive nut inspection.

[0008] Optionally, the actuating mechanism includes: The push block is slidably mounted on the machine body in a direction that is closer to or further away from the go gauge; A clamping and positioning assembly is mounted on the push block and is used to clamp and position the guide rod and to position the nut located above and adjacent to the defective nut. The receiving track is installed on the machine body and is inclined downwards; Pushing component one and pushing component two are set on the pushing block and work together to first push the go gauge down to disengage from the guide rod, and then push the defective nut to the collection track for collection; The testing instrument is used to detect whether there are any defective nuts remaining on the go gauge.

[0009] By adopting the above technical solution, the detector is used to detect whether there is a nut stuck on the go gauge and not passing through. When this is detected, the push block drives the clamping and positioning component, push component one, and push component two to approach the guide rod, so that the clamping and positioning component is inserted between the defective nut and the nut above and adjacent to it. The nut above is pressed against the clamping and positioning component for positioning under the action of gravity. The clamping and positioning component is activated to clamp and position the guide rod. Push component one is activated to push the go gauge and the defective nut downward, so that the go gauge is disengaged from the guide rod. Then, push component two is activated to push the defective nut off the go gauge and fall onto the receiving track for conveying and collection.

[0010] Pushing component two and pushing component one move back, the go gauge moves up under the action of elastic force and engages with the guide rod, the clamping and positioning component releases its clamp, and the pushing block moves back and disengages from the guide rod. The nut located above continues to move down, and then the process is repeated, thereby improving the nut inspection efficiency and realizing comprehensive inspection of the nut.

[0011] By using the clamping and positioning component, the first pushing component, and the second pushing component to operate in sequence, the mechanical structure can ensure the removal of defective nuts, thus improving the detection efficiency and effectiveness.

[0012] Optionally, the clamping and positioning component includes: The driving component is mounted on the push block; Two clamping plates are mounted on the drive unit and move closer or further apart under the action of the drive unit; the two clamping plates are inserted between the defective nut and the adjacent nut above it to clamp and position the guide rod.

[0013] By adopting the above technical solution, the push block moves to drive two clamping plates to insert between the defective nut and the nut located above and adjacent to it. The drive unit starts to drive the two clamping plates to move closer to each other to clamp and position the guide rod, thereby achieving clamping and positioning of the guide rod and positioning of the nut. The two clamping plates move away from each other to unlock the guide rod, and the push block moves back to drive the two clamping plates to disengage from the nut.

[0014] Optionally, the two clamping plates are provided with guide angles to facilitate insertion and installation between two adjacent nuts.

[0015] By adopting the above technical solution, it is easy to insert between two adjacent nuts.

[0016] Optionally, the pushing component one includes: The movable block is slidably mounted on the push block along the sliding direction close to or away from the guide rod. Push rod one is rotatably mounted on the push block and tilted downwards; Positioning block one is set on the push block and located above push rod one; The elastic component is set on the push block and connected to the push rod. Under the action of elastic force, the push rod is pulled to abut against the positioning block for positioning.

[0017] By adopting the above technical solution, when the guide rod is clamped and positioned, the moving block drives the push rod one to approach the go gauge. The push rod one abuts against the bottom of the go gauge. The moving block continues to move, driving the push rod one to rotate downward. After the push rod one rotates, it pushes the go gauge downward, thereby driving the go gauge to move downward. When the go gauge needs to move back, the moving block moves back, and the push rod one and the go gauge rotate and move upward respectively under the elastic force of the elastic element and the telescopic component, so that the push rod one and the go gauge return to their original positions.

[0018] Optionally, the second pushing component includes: Push rod two is rotatably mounted on the moving block and tilted upward. When the go gauge and guide rod are disengaged to form a gap for the go gauge to pass through, push rod two is located below the defective nut and abuts against the outer wall of the go gauge for positioning. Positioning block two is set on the pushing block and located below pushing rod two; the elastic element is connected to pushing rod one and pushing rod two and causes pushing rod one and pushing rod two to abut against positioning block one and positioning block two respectively for positioning.

[0019] By adopting the above technical solution, the moving block drives push rod one and push rod two to simultaneously approach the go gauge and the defective nut. Push rod one first contacts the go gauge and pushes it downward. When the go gauge disengages from the guide rod to form a gap for the go gauge to pass through, push rod two is positioned below the defective nut and abuts against the outer wall of the go gauge for positioning. As push rod one and push rod two continue to move, push rod two abuts against the go gauge and rotates upward, causing push rod two to abut against the defective nut, causing the defective nut to move upward and disengage from the go gauge. After disengaging from the go gauge, push rod two can rotate under the action of elasticity and generate a thrust on the defective nut, allowing the defective nut to fall accurately onto the receiving track for conveying and collection. This ensures the stable removal and collection of defective nuts, improves detection efficiency, and enables comprehensive inspection of nuts.

[0020] Optionally, the telescopic component includes: The telescopic rod is vertically slidably mounted on the top of the detection rod, and the go gauge is mounted on the top of the telescopic rod; An elastic element is mounted on the detection rod and connected to the telescopic rod. The connector is mounted on the guide rod and is positioned by inserting into the top of the go gauge.

[0021] By adopting the above technical solution, the pushing mechanism pushes the go gauge and the plug-in component downward to compress the elastic component. When the pushing mechanism moves upward, the go gauge and the plug-in component move upward to their original position under the elastic force of the elastic component.

[0022] Optionally, the connector has a regular polyhedral structure.

[0023] By adopting the above technical solution, the stability of the connection between the guide rod and the detection rod is improved.

[0024] Optionally, the clamping mechanism includes: The upper clamping member and the lower clamping member are arranged at intervals and are used to alternately clamp the two clamping points and maintain the clamping of the two clamping points for a certain period of time.

[0025] By adopting the above technical solution, the upper clamping member and the lower clamping member alternately clamp the detection rod to form two clamping points, and there is a time when the detection rod is clamped at the same time, so that the detection rod is always clamped and positioned, which improves the stability of the detection rod in use.

[0026] Optionally, the vibration mechanism includes: A vibrating block is slidably mounted on the machine body, and the clamping mechanism is mounted on the vibrating block; A vibrating element used to vibrate a vibrating block.

[0027] By adopting the above technical solution, the vibrating component starts to drive the vibrating block to vibrate. The vibrating block vibrates the clamping mechanism, the detection rod, the go gauge, and the detection rod simultaneously, so that the nut can move vertically and rotate under the action of the thread when in contact with the go gauge. At the same time, when rejecting unqualified nuts, the vibrating component stops vibrating.

[0028] In summary, this application includes at least one of the following beneficial technical effects: The nut is placed on top of the go gauge. The vibration mechanism starts, and qualified nuts detach from the go gauge, fitting onto the detection rod and falling onto the clamping mechanism. The clamping mechanism clamps the nuts at two points, one above and one below, to collect the qualified nuts. The pushing mechanism then moves closer to and clamps the guide rod, pushing the go gauge and unqualified nuts downwards. After the go gauge detaches from the guide rod, the pushing mechanism pushes the unqualified nuts at the top of the go gauge upwards, collecting them. This process removes the unqualified nuts. The pushing mechanism then moves back, disengaging from the go gauge and guide rod. The go gauge then reattaches to the guide rod, connecting the detection rod, go gauge, and guide rod as a single unit. Finally, the pushing mechanism disengages from the guide rod, and the nuts continue to fall for inspection. This process repeats automatically, significantly reducing the time spent removing unqualified nuts, improving inspection efficiency, and enabling comprehensive nut inspection. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of the detection system; Figure 2 This is a schematic diagram of the detection system, omitting some parts of the machine body; Figure 3 This is a schematic diagram of the detection device in the detection system; Figure 4 This is a partial structural diagram of the detection device in the detection system; Figure 5 yes Figure 4 Enlarged diagram of section A in the middle; Figure 6 This is a partial structural diagram of the detection device in the detection system, in which the go gauge and the connector are in a disengaged state.

[0030] Reference numerals: 1. Machine body; 11. Mounting plate; 12. Guide tube; 13. Collection box one; 14. Collection box two; 15. Bearing plate; 2. Feeding device; 21. Vibratory feeder; 22. Inclined discharge channel; 23. Horizontal discharge channel; 3. Detection device; 31. Detection rod; 32. Guide rod; 33. Qual gauge; 34. Vertical section; 35. Horizontal section; 36. Push groove; 4. Clamping mechanism; 41. Upper clamping component; 42. Lower clamping component; 5. Vibratory machine Structure; 51. Vibrating block; 52. Vibrating component; 6. Telescopic assembly; 61. Telescopic rod; 62. Elastic component; 63. Connector; 7. Pushing mechanism; 71. Pushing block; 72. Receiving track; 73. Detector; 74. Clamping and positioning assembly; 75. Driving component; 76. Clamping plate; 8. Pushing assembly one; 81. Moving block; 82. Pushing rod one; 83. Positioning block one; 84. Elastic component; 9. Pushing assembly two; 91. Pushing rod two; 92. Positioning block two. Detailed Implementation

[0031] The following provides a further detailed description of this application.

[0032] This application discloses a batch inspection system for internal threads of workpieces.

[0033] Reference Figure 1 The workpiece internal thread batch inspection system includes a machine body 1, a feeding device 2 set on the machine body 1, and an inspection device 3. The feeding device 2 is used to vibrate and transport the nuts to the inspection device 3 for inspection, so as to realize the comprehensive inspection of the nuts.

[0034] Reference Figures 1-2 The feeding device 2 includes a vibratory feeder 21, an inclined discharge channel 22, and a horizontal discharge channel 23. The vibratory feeder 21 is fixedly installed on the machine body 1. The inclined discharge channel 22 is fixedly installed on the vibratory feeder 21 and is inclined downward. The horizontal discharge channel 23 is fixedly installed on the bottom of the inclined discharge channel 22 and is horizontally set. Multiple nuts are placed inside the vibratory feeder 21. After the vibration makes the nuts neatly arranged, they are moved through the inclined discharge channel 22 to the horizontal discharge channel 23 for conveying.

[0035] Reference Figures 2-3 The detection device 3 includes a detection rod 31, a clamping mechanism 4, a vibration mechanism 5, a guide rod 32, a gauge 33, and a pushing mechanism 7. The detection rod 31 is vertical and located on one side of the horizontal discharge channel 23 and below the horizontal discharge channel 23. Two clamping points are vertically spaced on the detection rod 31. The clamping mechanism 4 is used to clamp the two clamping points alternately. When changing the clamping points, the two clamping points are clamped for a certain period of time. That is, after the clamping of the latter clamping point is stable, the clamping of the former clamping point is released, thereby realizing the positioning of the detection rod 31.

[0036] The vibration mechanism 5 is used to vibrate the detection rod 31. The vibration mechanism 5 includes a vibration block 51 and a vibration element 52. The vibration block 51 is horizontally slidably mounted on the machine body 1. The vibration element 52 is a vibration motor. The vibration element 52 is connected to the vibration block 51. When the vibration element 52 is activated, the vibration block 51 vibrates back and forth. The clamping mechanism 4 is set on the vibration block 51. The clamping mechanism 4 is used to clamp the detection rod 31, thereby enabling the vibration element 52 to start and vibrate the detection rod 31.

[0037] The clamping mechanism 4 includes an upper clamping member 41 and a lower clamping member 42. The upper clamping member 41 and the lower clamping member 42 are fixedly installed on the machine body 1 at intervals and are used to clamp the two clamping points alternately. The upper clamping member 41 and the lower clamping member 42 both use the thumb cylinder and two clamping plates in the prior art. The thumb cylinder drives the two clamping plates to clamp the detection rod 31. The clamping plates are provided with arc-shaped clamping grooves that facilitate clamping the detection rod 31.

[0038] First, after the nut is placed on the detection rod 31, it falls downwards and is placed on the upper clamping member 41. The lower clamping member 42 clamps the detection rod 31 for positioning. The upper clamping member 41 releases its clamp, and the nut falls downwards onto the lower clamping member 42. The upper clamping member 41 clamps the detection rod 31 to prevent the next nut from moving. The lower clamping member 42 releases its clamp, allowing the nut to fall off the detection rod 31. This process is repeated in sequence, thereby enabling the nut placed on the detection rod 31 to be removed from the detection rod 31 and keeping the detection rod 31 in a stable state.

[0039] The guide rod 32 includes a vertical section 34 and a horizontal section 35. The horizontal section 35 is connected to the top of the vertical section 34. The vertical section 34, the horizontal section 35 and the detection rod 31 have the same outer diameter, and all of them are smaller than the minimum diameter of the nut. The axes of the vertical section 34 and the detection rod 31 are coincident. The horizontal section 35 extends horizontally into the horizontal discharge channel 23, so that the nuts in the horizontal discharge channel 23 are sequentially fitted onto the horizontal section 35. Then, as the subsequent nuts move, they push the nuts to move onto the vertical section 34. The vibration mechanism 5 vibrates over a small distance and will not interfere with the nuts in the horizontal discharge channel 23 being fitted onto the horizontal section 35.

[0040] The go gauge 33 is mounted on the top of the test rod 31 via a flexible telescopic component 6 and is detachably connected to the bottom of the vertical section 34. It is used to test the internal thread of the nut. After the nut on the vertical section 34 falls downward, it rests against the top of the go gauge 33. With the vibration of the test rod 31, the qualified nut rotates with the cooperation of the go gauge 33, so that the nut thread connects to the go gauge 33. Finally, the nut separates from the go gauge 33 and is sleeved on the test rod 31 and placed on the upper clamp 41 for positioning. The unqualified nut rests against the top of the go gauge 33 for positioning, or a small part of the nut thread connects to the go gauge 33 and cannot continue to rotate or move.

[0041] The pushing mechanism 7 is used to push the defective nut off the go gauge 33. When a defective nut is detected not passing through the go gauge 33, the pushing mechanism 7 first approaches and clamps the bottom of the vertical section 34, and supports and positions itself against the nut above and adjacent to the defective nut. Then, it pushes the go gauge 33 and the defective nut downward, causing the go gauge 33 to disengage from the guide rod 32 to form a gap for the defective nut to pass through. The pushing mechanism 7 then starts to push the defective nut off the go gauge 33 for collection. The pushing mechanism 7 moves in the opposite direction, first moving the go gauge 33 upward to engage with the guide rod 32, and then releasing the clamping action on the guide rod 32 before returning to its original position.

[0042] Reference Figures 2-6 The telescopic assembly 6 includes a telescopic rod 61, an elastic element 62, and a connector 63. The telescopic rod 61 is coaxially slidably installed on the top of the detection rod 31, and the outer diameter of the telescopic rod 61 is smaller than that of the detection rod 31. The go gauge 33 is detachably installed on the top of the telescopic rod 61, and the connection method is threaded and plugged, etc. The elastic element 62 is a spring, which is sleeved on the telescopic rod 61, and its two ends press against the bottom of the go gauge 33 and the top of the detection rod 31. The elastic element 62 is in a compressed state. The connector 63 is fixedly installed on the bottom of the vertical section 34 and is a regular polyhedron. The connector 63 is plugged into the top of the go gauge 33 for positioning.

[0043] The pushing mechanism 7 includes a pushing block 71, a clamping and positioning assembly 74, a receiving track 72, a first pushing assembly 8, a second pushing assembly 9, and a detector 73. The machine body 1 is fixedly mounted with a vertical mounting plate 11 on one side of the detector rod 31 and the guide rod 32. The pushing block 71 is horizontally slidably mounted on the side wall of the mounting plate 11. A first drive source is fixedly mounted on the mounting plate 11. The first drive source is an electric push rod or a cylinder. The first drive source is used to drive the mounting plate 11 to move horizontally, and the pushing block 71 moves in the direction of approaching or moving away from the gauge 33. The clamping and positioning assembly 74 is set on the pushing block 71 and is used to clamp and position the guide rod 32 and to support and position the nuts located above and adjacent to the defective nuts.

[0044] The clamping and positioning assembly 74 includes a drive member 75 and two clamping plates 76. The drive member 75 is fixedly mounted on the push block 71, and the two clamping plates 76 are mounted on the drive member 75. The drive member 75 is used to drive the two clamping plates 76 to move closer or further apart from each other. The principle is the same as that of the upper clamping member 41 and the lower clamping member 42. This is prior art and will not be described in detail. At the same time, the two clamping plates 76 are provided with guide angles for inserting between two adjacent nuts.

[0045] The receiving track 72 is fixedly installed on the upper surface of the machine body 1, located on the side of the go gauge 33 away from the mounting plate 11. Its top extends to the side of the go gauge 33, and its bottom is inclined downwards. Pushing assembly 8 and pushing assembly 9 are mounted on the pushing block 71, and are used to push the go gauge 33 downwards and move unqualified nuts onto the receiving track 72 for collection, respectively. An arc-shaped guide tube 12 is fixedly installed on the machine body 1 below the detection rod 31. The bottom end of the detection rod 31 extends into the guide tube 12, which is used to catch the nuts and reduce their moving speed.

[0046] The detector 73 is fixedly installed on the machine body 1 and is used to detect whether there are nuts that have not passed through the go gauge 33. The detector 73 is facing the guide tube 12 and is used to detect the nuts output through the guide tube 12. If the detector 73 detects that the previous nut has passed through, and the next nut passes through again within a specified time, or if the detector 73 does not detect the next nut passing through within a specified interval, then there are nuts on the surface that have not passed through the go gauge 33, that is, there are unqualified nuts.

[0047] A collection box 13 is placed on the ground. The collection box 13 is used to collect qualified nuts output from the guide tube 12. A collection box 2 14 is placed on the machine body 1 below the receiving track 72. It is used to collect unqualified nuts conveyed by the receiving track 72.

[0048] A control box is fixedly installed on the machine body 1 to control the movement or stop of the push mechanism 7. The detector 73 transmits the detection data to the control box for processing. When the detector 73 detects that a nut is stuck on the go gauge 33 and fails to pass, the control box controls the push mechanism 7 to start and remove the unqualified nut.

[0049] Push assembly 1 8 includes a moving block 81, a push rod 1 82, a positioning block 1 83, and a spring element 84; push assembly 2 9 includes a push rod 2 91 and a positioning block 2 92; the moving block 81 is horizontally slidably mounted on the side wall of the push block 71, and its moving direction is parallel to the moving direction of the push block 71. A second drive source for driving the moving block 81 is fixedly mounted on the push block 71. The second drive source is an electric push rod; the second push rod 2 91 is located above the push rod 1 82, and is horizontally rotatably mounted on the side wall of the moving block 81 near the go gauge 33, and extends to the side of the moving block 81 near the go gauge 33. The top end of the push rod 2 91 is inclined upward, and the bottom end of the push rod 1 82 is inclined downward.

[0050] A vertically positioned support plate 15 is fixedly installed on the side wall of the movable block 81 near the go gauge 33; positioning block 1 83 and positioning block 2 92 are located between push rod 1 82 and push rod 2 91, and are both fixedly installed on the side wall of the support plate 15, with positioning block 1 83 above push rod 1 82 and positioning block 2 92 below push rod 2 91; the elastic element 84 is a spring, and the elastic element 84 is fixedly connected to the corresponding side walls of push rod 1 82 and push rod 2 91, so that push rod 1 82 presses upward against the lower surface of positioning block 1 83, and push rod 2 91 presses downward against the upper surface of positioning block 2 92 for positioning, thereby positioning the positions of push rod 1 82 and push rod 2 91, while the bottom end of push rod 2 91 is located on the side of push rod 1 82 near the go gauge 33; an annular push groove 36 is coaxially opened on the outer side wall of the bottom of the go gauge 33.

[0051] The push block 71 drives the clamping and positioning assembly 74, push assembly 1 8 and push assembly 2 9 to approach the go gauge 33, so that the clamping and positioning assembly 74 first inserts between the defective nut and the nut above and adjacent to it, and then clamps it on the vertical section 34 for positioning, preventing the nut above from moving down.

[0052] The moving block 81 drives the first pushing component 8 and the second pushing component 9 to continue approaching the gauge 33. The first pushing rod 82 first abuts against the pushing groove 36 for positioning. The first pushing rod 82 continues to move, pushing the gauge 33 downward and rotating itself, causing the connector 63 to disengage from the gauge 33 until a gap is formed between the connector 63 and the gauge 33 for the nut to pass through. At the same time, the second pushing rod 91 is positioned below the defective nut and abuts against the outer wall of the gauge 33 for positioning. The first pushing rod 82 and the second pushing rod 91 continue to approach the gauge 33. The first pushing rod 82 continues to drive the gauge 33 downward. The second pushing rod 91 rotates upward and pushes the defective nut onto the receiving track 72. The defective nut falls downward into the collection box for collection under the action of gravity. At the same time, when part of the nut thread is connected to the gauge 33, the second pushing rod 91 can also cause the nut to rotate and disengage from the gauge 33 during the upward pushing of the nut, thereby removing and collecting the defective nut.

[0053] The moving block 81 first moves back, so that the gauge 33 moves up and engages with the connector 63 for positioning. Then the clamping and positioning component 74 releases its grip on the vertical section 34, and the pushing block 71 drives the clamping and positioning component 74, the pushing component 1 8 and the pushing component 2 9 to move back. This process is repeated to remove and collect the defective nuts.

[0054] The working principle of this application embodiment is as follows: The vibratory feeder 21 starts and conveys the nut onto the vertical section 34, so that the nut rests against the top of the go gauge 33. At the same time, the vibration mechanism 5 starts to vibrate the detection rod 31, the go gauge 33 and the vertical section 34. Under the action of gravity and the internal thread of the nut cooperating with the go gauge 33, the qualified nut rotates and the thread connects to the go gauge 33. Then the nut separates from the go gauge 33 and is placed on the upper clamp 41. The lower clamp 42 cooperates with the upper clamp 41 to make the nut fall into the collection box 13 through the guide tube 12 for collection. The detector 73 detects the nut.

[0055] Defective nuts are pressed against or partially threaded onto the go gauge 33. When the detector 73 detects a defective nut, the clamping and positioning component 74, the pushing component 1 8, and the pushing component 2 9 approach the go gauge 33. The clamping and positioning component 74 clamps the vertical section 34 and positions the nut. The pushing components 1 8 and 2 9 continue to approach the go gauge 33, first pushing the go gauge 33 downward to disengage from the connector 63, and then pushing the defective nut upward to disengage from the go gauge 33 and move it into the collection box 2 14 for collection. Then, the pushing components 1 8 and 2 9 move away from the go gauge 33. Under the action of the elastic element 62, the go gauge 33 moves upward to engage with the connector 63 for positioning. The clamping and positioning component 74 releases its grip, and the clamping and positioning component 74, the pushing component 1 8, and the pushing component 2 9 return to their original positions, thereby removing the defective nut, improving detection efficiency, and enabling comprehensive nut inspection.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A batch inspection system for internal threads of workpieces, characterized in that: It includes a machine body (1) and a feeding device (2) and a detection device (3) installed on the machine body (1), wherein the detection device (3) includes: The detection rod (31) is in a vertical position and has two clamping points set at vertical intervals; The clamping mechanism (4) is used to clamp the two clamping points alternately and to position the detection rod (31). Vibration mechanism (5) is used to vibrate the detection rod (31); The guide rod (32) is coaxially arranged with the detection rod (31) and located above the detection rod (31) and has the same diameter as the detection rod (31). The feeding device (2) is used to guide and deliver the nut onto the guide rod (32). The go gauge (33) is set on the detection rod (31) by a flexible telescopic component (6) and is detachably connected to the guide rod (32) and used to detect the internal thread of the nut. The qualified nut rotates under the action of vibration and gravity and is threaded onto the go gauge (33) and finally passes through the go gauge (33). The unqualified nut is positioned against the go gauge (33). The pushing mechanism (7) is used to push the defective nut off the gauge (33). When there is a defective nut, the pushing mechanism (7) first clamps the guide rod (32) to position the guide rod (32) and the nut, and then pushes the gauge (33) and the defective nut downward to move them down and make the gauge (33) separate from the guide rod (32). The pushing mechanism (7) then starts to push the defective nut off the gauge (33) for collection. The pushing mechanism (7) moves back first to make the gauge (33) move up to insert and position with the guide rod (32), and then unlocks the clamp on the guide rod (32) and moves away from the guide rod (32).

2. The batch inspection system for internal threads of workpieces according to claim 1, characterized in that: The propulsion mechanism (7) includes: The push block (71) is slidably disposed on the body (1) in a direction close to or away from the guide gauge (33); The clamping and positioning assembly (74) is disposed on the push block (71) and is used to clamp and position the guide rod (32) and to position the nut located above and adjacent to the defective nut; The receiving track (72) is set on the machine body (1) and tilted downwards; Pushing component one (8) and pushing component two (9) are set on the pushing block (71) and work together to first push the gauge (33) down and disengage it from the guide rod (32), and then push the defective nut to the receiving track (72) for collection; The detector (73) is used to detect whether there are any defective nuts stuck on the gauge (33).

3. The batch inspection system for internal threads of workpieces according to claim 2, characterized in that: The clamping and positioning assembly (74) includes: The driving component (75) is mounted on the push block (71); Two clamping plates (76) are set on the drive member (75) and move closer or further apart under the action of the drive member (75); the two clamping plates (76) are inserted between the defective nut and the nut above and adjacent to it to clamp and position the guide rod (32).

4. The batch inspection system for internal threads of workpieces according to claim 3, characterized in that: The two clamping plates (76) are provided with guide angles to facilitate insertion and installation between two adjacent nuts.

5. A batch inspection system for internal threads of workpieces according to claim 2, characterized in that: The first propulsion component (8) includes: The movable block (81) is slidably mounted on the push block (71) along the sliding direction close to or away from the guide rod (32). Push rod 1 (82) is rotatably mounted on push block (71) and tilted downwards; Positioning block 1 (83) is set on push block (71) and located above push rod 1 (82); The elastic element (84) is set on the push block (71) and connected to the push rod (82). Under the action of elastic force, the push rod (82) is pulled to abut against the positioning block (83) for positioning.

6. A batch inspection system for internal threads of workpieces according to claim 5, characterized in that: The second propulsion component (9) includes: Push rod 2 (91) is rotatably mounted on moving block (81) and tilted upward. When the go gauge (33) and guide rod (32) separate to form a gap for the go gauge (33) to pass through, the push rod 2 (91) is located below the defective nut and abuts against the outer wall of the go gauge (33) for positioning. Positioning block 2 (92) is set on push block (71) and located below push rod 2 (91); the elastic element (84) is connected to push rod 1 (82) and push rod 2 (91) and makes push rod 1 (82) and push rod 2 (91) abut against positioning block 1 (83) and positioning block 2 (92) respectively for positioning.

7. The batch inspection system for internal threads of workpieces according to claim 1, characterized in that: The telescopic component (6) includes: The telescopic rod (61) is vertically slidably mounted on the top of the detection rod (31), and the go gauge (33) is mounted on the top of the telescopic rod (61); An elastic element (62) is mounted on the detection rod (31) and connected to the telescopic rod (61); The connector (63) is set on the guide rod (32) and is inserted into the top of the go gauge (33) for positioning.

8. A batch inspection system for internal threads of workpieces according to claim 7, characterized in that: The connector (63) has a regular polyhedral structure.

9. A batch inspection system for internal threads of workpieces according to claim 1, characterized in that: The clamping mechanism (4) includes: The upper clamping member (41) and the lower clamping member (42) are arranged at intervals and are used to alternately clamp the two clamping points and maintain the clamping of the two clamping points for a certain period of time.

10. A batch inspection system for internal threads of workpieces according to claim 1, characterized in that: The vibration mechanism (5) includes: The vibrating block (51) is slidably mounted on the machine body (1), and the clamping mechanism (4) is mounted on the vibrating block (51); The vibrating element (52) is used to vibrate the vibrating block (51).

Images