A hole blocking automatic detection device and a control method thereof

Abstract

The application discloses a kind of hole blocking automatic detection device and control method thereof, including rack, feeding mechanism, detection mechanism, material moving mechanism and controller;Feeding mechanism is used to sequentially single root feeding to multiple bars;Detection mechanism is located at the side of feeding mechanism, and detection mechanism includes detection tooling and visual acquisition component, and detection tooling is used to connect detection liquid and the detection through-hole of bar;Visual acquisition component is located at the side of detection tooling, and is used to acquire the image of bar's spray liquid column;Material moving mechanism is located between feeding mechanism and detection mechanism, and controller is respectively connected with feeding mechanism, detection mechanism and material moving mechanism communication connection.The application has high degree of automation, saves time and effort, can reduce subjective misjudgment rate of artificial detection, improve production detection quality.The application passes into detection through-hole with certain pressure detection liquid, judges whether to block hole by spray height, and hole blocking judgment is not limited by detection through-hole shape, and control method is fast and effective.

Description

Technical Field

[0001] This invention relates to the field of hole blockage detection technology, and in particular to an automatic hole blockage detection device and its control method. Background Technology

[0002] Bar stock with through holes may experience internal pore blockage during extrusion, cutting, and semi-finishing processes, affecting its performance in later use. Therefore, it is necessary to inspect and remove bars with some blockage. Traditional control methods involve manual visual inspection of each bar to determine if it is blocked. However, manual inspection has a certain rate of subjective error, and it is difficult to manually inspect complex-shaped through holes, such as spiral or intersecting through holes. Furthermore, manually handling and inspecting each bar individually, followed by manual sorting into good and defective bins, is time-consuming and labor-intensive for large batches of bars. Summary of the Invention

[0003] The purpose of this application is to provide an automatic hole-clogging detection device and its control method to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] An automatic hole-clogging detection device of the present invention includes a frame, a feeding mechanism, a detection mechanism, and a transfer mechanism; the feeding mechanism is used to sequentially feed single bars with detection through holes; the detection mechanism is located on one side of the feeding mechanism, and the detection mechanism includes a detection fixture and a vision acquisition component, the detection fixture being used to connect the detection liquid and the detection through hole; the vision acquisition component is located on one side of the detection fixture and is used to acquire images of the ejected liquid column of the bar; the transfer mechanism is located between the feeding mechanism and the detection mechanism; a controller is communicatively connected to the feeding mechanism, the detection mechanism, and the transfer mechanism respectively.

[0006] Furthermore, the feeding mechanism includes a hopper assembly, a lifting assembly, and a position switching assembly; the hopper assembly is used to place multiple bars and discharge them; the lifting assembly is located on the discharge side of the hopper assembly, and the lifting assembly is used to drive a single bar to rise and discharge; the position switching assembly is used to drive the lifting assembly to move horizontally along the discharge direction of the bar.

[0007] The lifting assembly includes a top material pusher plate and a first vertical moving part. The top material pusher plate has multiple spaced-apart blocks on its upper part, which are vertically inserted into the gaps between adjacent top material transition blocks. The first vertical moving part is used to drive the top material pusher plate to move up and down.

[0008] Furthermore, the feeding mechanism also includes a positioning component, which includes a positioning part and a pushing part. The positioning part is used to receive the bar material discharged by the lifting component, and the pushing part is used to confine the bar material to a specific position of the positioning part.

[0009] Furthermore, the testing fixture includes a fixture base block and a sealing block; the fixture base block is provided with a liquid channel; the upper surface of the sealing element is used to place the rod, the lower end of the sealing element is connected to the liquid channel, and the upper end of the sealing element is connected to the testing through hole.

[0010] Furthermore, the visual acquisition component includes a camera and a camera lifting unit; the camera may be one or more; the camera lifting unit is used to drive the camera to move up and down.

[0011] Furthermore, the automatic hole blockage detection device also includes a drying mechanism that is communicatively connected to the controller. The drying mechanism is located on the opposite side of the feeding mechanism and is used to blow air onto the bar and the detection through hole.

[0012] Furthermore, the automatic hole blockage detection device also includes a feeding mechanism that is communicatively connected to the controller. The feeding mechanism is located on the opposite side of the detection mechanism and is used to place qualified and unqualified bars into the good product box or the defective product box, respectively.

[0013] Furthermore, the automatic hole blockage detection device also includes a liquid circulation mechanism that is communicatively connected to the controller. The liquid circulation mechanism is located below the detection mechanism and is used to provide the detection liquid to the detection fixture and to recover the detection liquid after detection.

[0014] A control method for the aforementioned automatic plugging detection device according to the present invention includes the following steps: the controller controls the feeding mechanism to lift and feed the rod, so that the rod is in a horizontal state; the controller controls the transfer mechanism to rotate the rod to a vertical state and press the rod onto the sealing element; the controller controls the liquid circulation mechanism to introduce detection liquid into the detection fixture, the camera takes a picture of the sprayed liquid column, and the controller judges whether the height of the sprayed liquid column meets the requirements based on the picture image and gives a judgment result on whether the rod is qualified; the controller controls the transfer mechanism to move the rod to the drying mechanism for drying; the controller controls the transfer mechanism to rotate the rod to a horizontal state, and the unloading mechanism unloads the rod from the transfer mechanism according to the judgment result of the controller.

[0015] Furthermore, the controller calculates and analyzes whether the height of the ejected liquid column meets the requirements based on the captured images, specifically including the following steps: When a bar has multiple axial detection through holes, the controller pre-sets the acceptable height range for a single ejected liquid column and the acceptable height difference range between each ejected liquid column; it determines whether the actual ejected liquid column heights of the multiple detection through holes are within the pre-set acceptable height range, and whether the height difference between the multiple actual ejected liquid column heights is within the pre-set acceptable height difference range; When a bar has one axial detection through hole, the controller pre-sets the acceptable height range for a single ejected liquid column; it determines whether the actual ejected liquid column height of the single detection through hole is within the pre-set acceptable height range.

[0016] In summary, the technical effects and advantages of this invention are as follows:

[0017] 1. In this invention, by setting up a feeding mechanism, automatic feeding of a single bar can be achieved; by setting up a detection mechanism, detection liquid can be introduced into the detection through hole and the image of the ejected liquid column can be collected; by setting up a material transfer mechanism, the bar can be moved between various mechanisms; by setting up a controller, the actions of each mechanism can be controlled, and it can determine whether the detection through hole is blocked. This invention has a high degree of automation, saves time and labor, reduces the subjective error rate of manual inspection, and improves the quality of production inspection.

[0018] 2. In this invention, by setting a position switching component, the lifting component can be moved horizontally along the discharge direction of the bar, thereby adjusting the lifting position of the lifting component to adapt to bars with different cross-sectional dimensions and specifications. This ensures that the lifting component only drives a single bar to rise and discharge each time, thus realizing the feeding function and adapting to the feeding of bars with different cross-sectional dimensions and specifications, improving the adaptability of the feeding mechanism.

[0019] 3. In this invention, by setting up a detection fixture, a rod can be placed and a detection liquid with a certain pressure can be introduced into the detection through hole of the rod; by setting up a vision acquisition component, an image of the liquid column ejected from the rod during detection can be acquired.

[0020] 4. In this invention, by setting a drying mechanism, air can be blown onto the tested rod and the test through hole, which facilitates the drying of the rod;

[0021] 5. In this invention, by setting up a feeding mechanism, it is possible to automatically feed qualified and unqualified bars, which has a high degree of automation and saves time and effort;

[0022] 6. In this invention, a detection liquid with a certain pressure is introduced into the detection orifice, and the height of the spray is used to determine whether the orifice is blocked. The blockage determination is not limited by the shape of the detection orifice, and the control method is fast and effective. The visual acquisition component automatically determines whether the orifice is blocked, resulting in a high degree of automation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the automatic hole-clogging detection device in one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the feeding mechanism in one embodiment of the present invention. Figure 1 ;

[0026] Figure 3 This is a schematic diagram of the feeding mechanism in one embodiment of the present invention. Figure 2 ;

[0027] Figure 4 This is a schematic diagram of the feeding mechanism in one embodiment of the present invention, omitting the rotating baffle. Figure 3 ;

[0028] Figure 5 for Figure 2 A magnified view of a section at point A in the middle;

[0029] Figure 6 for Figure 4 A magnified view of a section at point B in the middle;

[0030] Figure 7 This is a schematic diagram of the detection mechanism and the liquid circulation mechanism in one embodiment of the present invention with the detection protective cover omitted;

[0031] Figure 8 This is a schematic diagram of the detection mechanism in one embodiment of the present invention;

[0032] Figure 9 for Figure 8 A magnified view of a section at point C;

[0033] Figure 10 This is a schematic diagram of the detection mechanism in one embodiment of the present invention with the detection protective cover omitted. Figure 1 ;

[0034] Figure 11 This is a schematic diagram of the detection mechanism in one embodiment of the present invention with the detection protective cover omitted. Figure 2 ;

[0035] Figure 12 This is a schematic diagram of the structure of the rod in one embodiment of the present invention;

[0036] Figure 13 This is a schematic diagram of the liquid circulation mechanism in one embodiment of the present invention;

[0037] Figure 14 This is a schematic diagram of the material transfer mechanism in one embodiment of the present invention;

[0038] Figure 15 This is a schematic diagram of the drying mechanism in one embodiment of the present invention;

[0039] Figure 16 This is a schematic diagram of the feeding mechanism in one embodiment of the present invention;

[0040] Figure 17 This is a schematic diagram of the structure of the material box supply assembly in one embodiment of the present invention;

[0041] Figure 18 This is a flowchart of a control method applied to a detection device in one embodiment of the present invention;

[0042] Figure 19 This is a flowchart illustrating the operation of the detection mechanism and the liquid circulation mechanism in one embodiment of the present invention.

[0043] In the diagram: 10. Bar stock; 20. Frame; 30. Good product bin; 40. Defective product bin; 1. Feeding mechanism; 2. Detection mechanism; 3. Liquid circulation mechanism; 4. Transfer mechanism; 5. Drying mechanism; 6. Unloading mechanism; 101. Detection through hole; 11. Hopper assembly; 12. Lifting assembly; 13. Position switching assembly; 14. Positioning assembly; 111. Hopper; 112. Top material transition block; 113. Inlet; 114. Outlet; 115. Spacing; 116. Side plate moving part; 117. Angle adjustment part; 118. Feeding assembly base plate; 1111. Hopper base plate; 1112. Hopper fixed side plate; 1113. Hopper moving side plate; 1114. Inclined plate support; 1115. Material shielding inclined plate; 1116. Rotating baffle; 1117, intermediate support plate; 1121, horizontal connecting block; 1122, vertical connecting block; 1161, guide post; 1162, first linear bearing; 1163, side plate fixing base; 1164, slide groove; 1165, locking screw; 1171, guide rod; 1172, hopper fixing block; 1173, guide groove; 1174, screw base plate; 1175, adjusting screw; 1176, nut; 121, top material push plate; 122, guide part; 123, first motor; 124, first connecting rod; 125, second connecting rod; 1211, insert block; 1212, guide shaft; 131, first horizontal moving part; 132, moving base plate; 133, motor fixing seat; 134, first mounting plate; 135. Second mounting plate; 136, reinforcing plate; 141, floating trough; 142, V-groove; 143, positioning base plate; 144, second horizontal moving part; 145, pushing block; 146, limiting block; 147, first spring; 148, second linear bearing; 21, inspection fixture; 22, vision acquisition component; 23, return liquid hopper; 201, liquid receiving tank; 202, exhaust port; 211, fixture base block; 212, sealing element; 213, fixture floating plate; 214, fixture fixing plate; 215, adjusting screw; 216, third linear bearing; 217, second spring; 2111, liquid inlet; 2131, chute; 2132, fixture adjusting block; 2141, first air blowing nozzle; 231, return interface; 221 1. Camera; 222. Camera lifting unit; 223. Cover plate; 2221. Camera mounting base; 2231. Light source baffle; 2232. Visual surface light source; 2233. Lifting cover plate; 2234. Second vertical moving part; 2235. Baffle; 31. Liquid storage unit; 32. Metering pump; 33. Pressure regulating pipeline; 34. Diverting pipeline; 35. Buffer unit; 36. Pressure stabilizing unit; 37. Sedimentation unit; 38. Filter unit; 331. Pressure measuring tube; 332. Return bypass; 333. Solenoid valve; 3311. First interface; 371. Liquid return interface; 41. Robotic arm; 42. Four-position divider; 51. Third vertical moving part; 52. Air blowing block; 53. Water receiving tank; 54. Lifting guide rail; 521. Second air blowing nozzle;61. Material box supply assembly; 62. Material unloading and tray placement assembly; 63. Automatic box collection assembly; 611. Material box conveyor belt; 612. Fourth vertical moving part; 613. Fifth vertical moving part; 614. Material box support bar; 615. Material box limit bar; 616. Box clamping cylinder; 617. Box receiving plate; 621. Sixth vertical moving part; 622. Gripper; 623. Air blowing part; 624. Third horizontal moving part; 625. Auxiliary moving guide rail; 631. Guide sliding rod; 632. Box pushing plate; 633. Fixed base plate; 634. Limiting rod. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0045] like Figure 1-17 As shown, an embodiment of the present invention provides an automatic hole-clogging detection device, including a frame 20, a feeding mechanism 1, a detection mechanism 2, a transfer mechanism 4, and a controller. The frame 20 provides support for the other components. The feeding mechanism 1 is used to feed multiple rods 10 one by one sequentially; the detection mechanism 2 is located on one side of the feeding mechanism 1, and the detection mechanism 2 includes a detection fixture and a vision acquisition component. The detection fixture is used to connect the detection liquid and the detection through hole 101 of the rod 10; the vision acquisition component is located on one side of the detection fixture and is used to acquire images of the ejected liquid column of the rod 10; the transfer mechanism 4 is located between the feeding mechanism 1 and the detection mechanism 2; the controller is communicatively connected to the feeding mechanism 1, the detection mechanism 2, and the transfer mechanism 4 respectively.

[0046] This embodiment enables automatic feeding of a single bar 10 by setting up a feeding mechanism 1, allows detection liquid to be introduced into the detection through hole and its ejected liquid column image to be collected by setting up a detection mechanism 2, enables the bar 10 to move between various mechanisms by setting up a material transfer mechanism 4, and enables the controller to control the actions of each mechanism and determine whether the detection through hole is blocked by setting up a controller. It has a high degree of automation, saves time and labor, reduces the subjective error rate of manual inspection, and improves the quality of production inspection.

[0047] Furthermore, the feeding mechanism 1 includes a hopper assembly 11, a lifting assembly 12, and a position switching assembly 13. The hopper assembly 11 is used to hold and discharge multiple bars 10. The lifting assembly 12 is located on the discharge side of the hopper assembly 11 and is used to lift and discharge a single bar 10. The position switching assembly 13 is used to move the lifting assembly 12 horizontally along the discharge direction of the bar 10.

[0048] Furthermore, the hopper assembly 11 includes a hopper 111 and a top material transition block 112. The hopper 111 has a feed inlet 113 on one side and a discharge outlet 114 on the other side. Multiple top material transition blocks 112 are arranged at intervals corresponding to the discharge outlets 114. A lifting assembly 12 is inserted into the gap 115 below the top material transition blocks 112. The hopper 111 is tilted, with the height of the hopper 111 at the feed inlet 113 greater than the height of the hopper 111 at the discharge outlet 114. The tilt angle of the hopper 111 is adjustable. The hopper 111 includes a hopper bottom plate 1111, a fixed side plate 1112, and a movable side plate 1113. The fixed side plate 1112 is fixedly connected to one end of the hopper bottom plate 1111, and the movable side plate 1113 can slide on the hopper bottom plate 1111 to accommodate bars 10 of different lengths. The hopper assembly 11 also includes a side plate moving part 116. In the side plate moving part 116, a first linear bearing 1162 is provided on the guide post 1161, and a side plate fixing base 1163 is connected to the first linear bearing 1162. A sliding groove 1164 is provided on the hopper bottom plate 1111, and the upper part of the side plate fixing base 1163 is located within the sliding groove 1164. The lower surface of the hopper moving side plate 1113 is connected to the upper surface of the side plate fixing base 1163. A locking screw 1165 is provided on the outer side of the hopper moving side plate 1113. An inclined plate support 1114 is provided on the hopper bottom plate 1111. An inclined material-blocking inclined plate 1115 is installed on the inclined plate support 1114 and the hopper fixing side plate 1112. A rotating baffle 1116 is rotatably connected to the lower end of the material-blocking inclined plate 1115. The side of the shielding baffle 1115 away from the rotating baffle 1116 is the feed inlet 113, and the side of the rotating baffle 1116 is the discharge outlet 114. The rotating baffle 1116 can block the outflowing bars 10 to a certain extent. The bottom plate 1111 of the hopper is inclined, and all the bars 10 will gather and accumulate towards the discharge outlet 114. The hopper assembly 11 also includes an angle adjustment part 117. The angle adjustment part 117 includes a guide rod 1171, a hopper fixing block 1172, a guide groove 1173, a screw base plate 1174, an adjusting screw 1175, and a nut 1176. The hopper 111 also includes an intermediate support plate 1117. The bottom plate 1111 of the hopper is connected to the bottom plate 118 of the feeding assembly through the intermediate support plate 1117. The bottom plate 1111 of the hopper is connected to the bottom plate 118 of the feeding assembly through the guide rod 1171. The bottom plate 1111 of the hopper is rotatably connected to the intermediate support plate 1117. The lower surface of the bottom plate 1111 is provided with two inclined hopper fixing blocks 1172. The hopper fixing blocks 1172 are provided with guide grooves 1173. Screws pass through the guide grooves 1173 and are threaded to the upper end of the guide rod 1171.The guide rod 1171 is also provided with a support plate fixing seat. A screw base plate 1174 is installed between the two support plate fixing seats. An adjusting screw 1175 is provided on the screw base plate 1174. Two nuts 1176 are provided on the adjusting screw 1175. One nut 1176 is located above the screw base plate 1174, and the other nut 1176 is located below the screw base plate 1174.

[0049] Furthermore, the top material transition block 112 includes a horizontal connecting block 1121 and a vertical connecting block 1122. The upper surface of the horizontal connecting block 1121 slopes downward along the discharge direction. One end of the horizontal connecting block 1121 is connected to the intermediate support plate 1117. The lower end of the vertical connecting block 1122 is connected to the other end of the horizontal connecting block 1121. During the lifting process of the lifting assembly 12, the upper surface of the horizontal connecting block 1121 automatically removes multiple layers of rods 10, leaving only a single rod 10 to rise to the top. The vertical side of the vertical connecting block 1122 near the discharge port 114 can support the rising of the rod 10.

[0050] Furthermore, the lifting assembly 12 includes a top material pusher plate 121 and a first vertical moving part. The top material pusher plate 121 has multiple spaced-apart inserts 1211 on its upper part, which are vertically inserted into the intervals 115 between adjacent top material transition blocks 112. The first vertical moving part is used to drive the top material pusher plate 121 to move up and down. In use, for bars 10 with large cross-sectional dimensions, the contact position between the bar 10 and the horizontal connecting block 1121 is far from the side of the vertical connecting block 1122. Therefore, it is necessary to adjust the inserts 1211 to move a certain distance away from the vertical connecting block 1122 so that the inserts 1211 can smoothly lift the bar 10 and drive it upwards. For the bar 10 with a small cross-sectional size, the contact position between the bar 10 and the horizontal connecting block 1121 is relatively close to the side of the vertical connecting block 1122. Therefore, it is necessary to adjust the insert block 1211 to move a certain distance closer to the vertical connecting block 1122 so that the insert block 1211 can smoothly lift the bar 10 and drive it upwards. The lifting assembly 12 also includes a guide portion 122. The guide portion 122 is vertically disposed on one or both sides of the first vertical moving part, and the push plate 121 is provided with a guide shaft 1212 that slides vertically along the guide portion 122. The first vertical moving part includes a first motor 123, a first connecting rod 124, and a second connecting rod 125.

[0051] Furthermore, the position switching component 13 includes a first horizontal moving part 131 and a first mounting part. The first horizontal moving part 131 is used to drive the first mounting part to move horizontally along the discharge direction of the bar 10, and the first mounting part is used to mount the lifting component 12. In this embodiment, the first mounting part includes a movable base plate 132, a motor mounting seat 133, a first mounting plate 134, a second mounting plate 135, and a reinforcing plate 136. The movable base plate 132 is connected to the moving end of the first horizontal moving part 131. In this embodiment, the first horizontal moving part 131 is a cylinder, and the fixed end of the cylinder is mounted on the frame 20.

[0052] Furthermore, the feeding mechanism 1 also includes a positioning component 14. The positioning component 14 is connected to the discharge side of the top material transition block 112. The positioning component 14 includes a positioning part and a pushing part. The positioning part is used to receive the bar 10 discharged from the lifting component 12, and the pushing part is used to confine the bar 10 to a specific position in the positioning part. The positioning part includes a floating material trough 141, and the upper surface of the floating material trough 141 is provided with a V-groove 142. By providing the V-groove 142 on the upper surface of the floating material trough 141, the horizontal movement of the bar 10 after it rolls into place can be guided. A positioning base plate 143 is provided between the floating material trough 141 and the vertical connecting block 1122. The pushing part includes a second horizontal moving part 144 and a pushing block 145. The second horizontal moving part 144 is located above the floating material trough 141. The second horizontal moving part 144 drives the pusher block 145 to move horizontally along the V-groove 142. A limiting block 146 is provided at the other end of the floating material trough 141 corresponding to the V-groove 142. The second horizontal moving part 144 is a cylinder. A first elastic floating part is located below the floating material trough 141, which can drive the floating material trough 141 to float up and down. By providing the first elastic floating part below the floating material trough 141, bars 10 with different cross-sectional sizes can float appropriately in the height direction, ensuring the consistency of the gripping position of the subsequent robotic arm. The first elastic floating part includes a first spring 147, a guide rod, and a second linear bearing 148.

[0053] Furthermore, the testing fixture 21 includes a fixture base block 211 and a sealing element 212. The fixture base block 211 has a liquid channel; the upper surface of the sealing element 212 is used to place the rod 10, the lower end of the sealing element 212 communicates with the liquid channel, and the upper end of the sealing element 212 communicates with the testing through hole 101. The liquid channel has an inlet port 2111 for communicating with the testing liquid. The sealing element 212 is made of rubber or silicone, and the lower end face of the rod 10 is placed on the upper surface of the sealing element 212 to seal the lower end face of the rod 10. The testing fixture 21 also includes a fixture floating plate 213, a fixture fixing plate 214, and a second elastic floating part. The fixture floating plate 213 is located below the fixture base block 211, and the mounting position of the fixture base block 211 on the fixture floating plate 213 is adjustable. The tooling fixing plate 214 is located below the fixture floating plate 213 and is connected to the frame 20. The second elastic floating part is located between the fixture floating plate 213 and the tooling fixing plate 214. The second elastic floating part is used to drive the fixture floating plate 213 to float up and down, which can further improve the sealing performance of the connection between the lower end face of the bar 10 and the seal 212.

[0054] Optionally, the upper surface of the fixture floating plate 213 is provided with a sliding groove 2131, and one end of the fixture floating plate 213 is provided with a tooling adjustment block 2132. The tooling adjustment block 2132 is provided with a threaded through hole, and an adjusting screw 215 is threadedly connected to the threaded through hole. The end of the adjusting screw 215 is threadedly connected to the side of the fixture bottom block 211. The position of the fixture bottom block 211 on the fixture floating plate 213 is adjustable to ensure the accuracy of the robot's placement of the bar 10. The second elastic floating part includes a guide shaft, a third linear bearing 216, and a second spring 217. The tooling fixing plate 214 is also provided with at least one first air nozzle 2141, which is located on one side of the fixture floating plate 213. A liquid receiving tank 201 is provided on the outer side of the frame 20 near the detection tooling 21. A return liquid hopper 23 is provided below the detection tooling 21, and a return interface 231 is provided in the middle of the return liquid hopper 23.

[0055] Furthermore, a liquid circulation mechanism 3, which is communicatively connected to the controller, is located below the detection mechanism 2. The liquid circulation mechanism 3 includes a liquid storage section 31, a metering pump 32, a pressure regulating pipeline 33, and a recovery and processing component. The liquid storage section can be barrel-shaped or tank-shaped. The metering pump 32 is controlled by frequency converter to draw the detection liquid from the liquid storage section 31 and transport it upwards. The pressure regulating pipeline 33 is located at the output end of the metering pump 32. One end of the recovery and processing component is connected to the reflux interface 231, and the other end is connected to the liquid storage section 31.

[0056] Optionally, a pressure measuring tube 331 is installed on the pressure regulating line 33. The pressure measuring tube 331 has a first interface 3311 for installing a pressure transmitter, which is used to measure the pressure of the detection fluid in the line. Downstream of the pressure measuring tube 331, a return bypass 332 and a diversion line 34 are provided. The return bypass 332 is connected to the liquid storage section 31, and the diversion line 34 is connected to the liquid inlet interface 2111 of the fixture base block 211 through different branch pipes. Solenoid valves 333 for controlling the on / off state are respectively installed on the return bypass 332 and the diversion line 34. A regulating ball valve and a control valve are respectively installed on the branch pipes connected to the liquid inlet interface 2111. When the pressure measured by the pressure transmitter is too high, the solenoid valve 333 on the return bypass 332 opens. When the detection liquid overflows from the return bypass 332 back to the storage section 31, the metering pump 32 operates at a reduced frequency to decrease the detection liquid pressure. When the pressure is too low, the operating frequency of the metering pump 32 increases to increase the detection liquid pressure. The stabilized detection liquid flows into the distribution pipe 34. The controller has pre-stored the bar name and size parameters, the corresponding camera lifting height, the corresponding detection liquid pressure, and the corresponding distribution pipe. Bars with different names have different heights or detection hole diameters, requiring different detection liquid pressures. The controller is communicatively connected to the metering pump, pressure transmitter, and each control valve. According to process requirements, the controller controls the detection liquid at the required pressure to flow into the detection fixture 21 through the corresponding distribution pipe. The liquid circulation mechanism 3 also includes a buffer section 35 and a pressure stabilizing section 36 to ensure a constant output flow rate. The pressure stabilizing section 36 can be a damping pressure regulator. The recovery and treatment components include a sedimentation section 37 and a filtration section 38. A return liquid interface 371, which is connected to the return interface 231, is provided above the sedimentation section 37.

[0057] Furthermore, the visual acquisition component 22 includes a camera 221 and a camera lifting unit 222. There may be one or more cameras 221. The camera lifting unit 222 is used to lift the camera 221. A controller is communicatively connected to both the camera 221 and the camera lifting unit 222. By setting the camera lifting unit 222, for bars 10 of different heights, the camera 221 can be lifted to different specified heights, ensuring that the ejected liquid column is always within the field of view of the camera 221. The camera 221 is mounted on a camera mounting base 2221. The visual acquisition component 22 also includes a shielding part 223. The shielding part 223 is fixedly or liftably mounted on the frame 20 corresponding to the camera 221. The shielding part 223 provides a backlight for the camera 221. The shielding part 223 includes a light source baffle 2231 and a visual surface light source 2232, which can be connected to the frame 20 via a mounting plate. The baffle section can also move up and down via the lifting baffle 2233 and the second vertical moving part 2234, which can avoid interference with the handling of the bar. A baffle 2235 is provided below the lifting baffle 2233. An exhaust vent 202 can also be provided.

[0058] Furthermore, the material handling mechanism 4, which is connected to the control mechanism, includes a robot arm 41 and a four-station divider 42. The robot arm 41 has five degrees of freedom, which can open and close the main gripper, open and close the secondary gripper, rotate horizontally and vertically, move forward and backward, and rise and fall. In cooperation with the four-station divider 42, it can realize different action processes in the loading mechanism, detection mechanism, drying mechanism, and unloading mechanism to achieve different processes.

[0059] Furthermore, the drying mechanism 5, which is connected to the controller, includes a third vertical moving part 51, an air blowing block 52, a water receiving tank 53, and a lifting guide rail 54. The third vertical moving part 51 can drive the air blowing block 52 to move up and down. The air blowing block 52 is provided with a second air blowing nozzle 521 that is connected to an external air source. The water receiving tank 53 is located below the third vertical moving part 51. After the robot arm 41 drives the bar 10 to the purging station, the air blowing block moves downward along the lifting guide rail under the drive of the motor and synchronous wheel mechanism. After reaching a certain distance from the end face of the bar, the air blowing solenoid valve is activated, and the gas is blown out along the second air blowing nozzle for purging. After purging for a set time, the air blowing block rises back to the origin, ending the single operation.

[0060] Furthermore, the feeding mechanism 6, which is connected to the controller, includes a box supply assembly 61, a feeding tray assembly 62, and an automatic box collection assembly 63. Specifically, the box supply assembly 61 includes a box conveyor belt 611, a fourth vertical moving part 612, a fifth vertical moving part 613, a box support bar 614, a box limiting bar 615, and a limiting blocking cylinder. A stack of empty good-quality boxes 30 is manually placed inside the four box support bars 614. At this time, the box-clamping cylinder 616 drives the box support bars 614 to extend and clamp the entire stack of good-quality boxes. During operation, the fourth vertical moving part 612 moves upward, and the top rod at the upper end lifts the entire stack of good product boxes. Then, the side box support bars 614 move outward and disengage from the good product boxes. The fourth vertical moving part 612 lowers the good product boxes, which fall to the receiving plate 617 at the upper end of the fifth vertical moving part 613. The side box support bars 614 extend inward and hold the second layer of good product boxes in the stack. The fifth vertical moving part 613 lowers, causing the bottom layer of good product boxes 30 to separate from the upper good product boxes and fall onto the box conveyor belt 611, which then moves the good product boxes to the left. A limit blocking cylinder is set at the corresponding unloading tray position. After the good product box moves to the limit blocking cylinder, it stops at the corresponding unloading tray position. Both the fourth vertical moving part 612 and the fifth vertical moving part 613 are cylinders. The unloading and traying assembly 62 includes a sixth vertical moving part 621, a gripper part 622, an air blowing part 623, a third horizontal moving part 624, and an auxiliary moving guide rail 625. After the bar arrives at the unloading station, the robot rotates the bar to a horizontal position. The third horizontal moving part moves the gripper part directly above the robot, and the sixth vertical moving part moves the gripper part down to a set position. The gripper part closes to clamp the bar, the robot opens, and the gripper part, carrying the bar, exits horizontally and moves to the air blowing part to blow away any residual liquid on the outer surface of the bar. After blowing, it continues to move horizontally and, according to previously received signals, places the bar into the good product box 30 and the defective product box 40, respectively. The sixth vertical moving part and the third horizontal moving part are both linear modules. The automatic box collecting assembly 63 includes a guide sliding rod 631, a rodless cylinder, a box pushing plate 632, a fixed base plate 633, and a limit rod 634. The guide sliding rod 631 can rotate on the surface of the fixed base plate, and its surface friction resistance is small. The full good product box is conveyed out along the box conveyor belt 611 and reaches the middle position of the fixed base plate 633. The rodless cylinder drives the box pusher plate 632 to move to the right and push the good product box to the right position. The box pusher plate stays on the right side. After the next good product box reaches the middle position of the fixed base plate, the box pusher plate moves to the left and pushes the good product box to the left position. Finally, one more good product box can be placed in the middle position. After three good product boxes are stacked, an alarm is sounded and all full good product boxes are manually removed.

[0061] Optionally, the first vertical moving part, the first horizontal moving part, the second horizontal moving part, the camera lifting part, the second vertical moving part, the third vertical moving part, the fourth vertical moving part, the fifth vertical moving part, the sixth vertical moving part, and the third horizontal moving part can also be cylinders, linear modules, belt drive structures, screw and nut drive structures, or gear and rack drive structures, etc. Corresponding sensors can be set on each mechanism to detect whether the bar is in position.

[0062] like Figure 18 and 19 As shown, this embodiment also provides a control method for the aforementioned automatic hole-clogging detection device, including the following steps:

[0063] S1. The controller controls the feeding mechanism to lift and feed the bar, keeping it horizontal. Specifically: Select the corresponding product name according to the bar to be fed; a sensor can be set in the hopper to detect whether there is material in the hopper. If there is, proceed to the next step; otherwise, manually feed the bar into the hopper until the sensor detects that there is material in the hopper; the lifting component lifts and feeds the bar. A sensor can be set on the floating trough to detect whether the bar is in place in the V-groove. If so, proceed to the next step; otherwise, the lifting component lifts and feeds the bar until the sensor detects that the bar is in place in the V-groove; the positioning component moves the bar horizontally along the V-groove until it contacts the limit block. A positioning sensor can be set on the limit block or the positioning component to detect whether the bar is in place in the V-groove. If so, proceed to the next step; otherwise, the positioning component operates until the positioning sensor detects that the bar is in place in the V-groove.

[0064] S2. The controller controls the transfer mechanism to clamp the bar in the V-groove. The transfer mechanism rotates the bar to a vertical position and presses the bar onto the seal. Specifically, a sensor can be set on the robot arm. The sensor detects whether the robot arm has successfully clamped the bar. If so, proceed to the next step. If not, the transfer mechanism clamps the bar in the V-groove until the sensor detects that the robot arm has successfully clamped the bar.

[0065] S3. The controller controls the liquid circulation mechanism to introduce detection liquid into the detection fixture. The camera takes pictures of the ejected liquid column. The controller determines whether the height of the ejected liquid column meets the requirements based on the image and provides a result indicating whether the bar is qualified. Specifically: the controller automatically matches the camera height according to the bar name being detected, and controls the camera lifting mechanism to move the camera to the appropriate height, ensuring that the ejected liquid column is within the camera's field of view. The material transfer mechanism moves the bar and presses it against the seal. A sensor can be installed on the fixture fixing plate. The sensor detects whether the bar at the seal is properly pressed. If so, proceed to the next step; if not, press the bar against the seal again until the sensor detects that the bar at the seal is properly pressed. According to the bar name, the controller controls... The liquid circulation mechanism operates, switching to the corresponding branch pipe for liquid flow; the camera takes pictures of the liquid column ejected from the bar, and the controller calculates and analyzes whether the height of the ejected liquid column meets the requirements based on the acquired images: when a bar has multiple axial detection holes, the controller pre-sets the acceptable height range for a single ejected liquid column and the acceptable height difference range between multiple ejected liquid columns; the controller reads the heights of multiple actual ejected liquid columns captured by each camera. When the heights of multiple actual ejected liquid columns captured by one camera are all within the acceptable height range, and the height difference between multiple actual ejected liquid columns is within the acceptable height difference range, an OK signal of 0 is output; the detection is repeated multiple times, and if an OK signal of 0 is output at least twice in the multiple detections, the product is output as OK, and the judgment result is saved. When a bar 10 has an axial detection through-hole 101, the controller pre-sets the acceptable height range for a single jet of liquid; it judges whether the actual jet height of a single detection through-hole 101 is within the pre-set acceptable height range. When the actual jet height of a single jet captured by one of the cameras is within the acceptable height range, it outputs an OK signal 0; the detection is repeated multiple times. If an OK signal 0 is output more than twice in the multiple detections, the product is output OK, and the judgment result is saved.

[0066] In this embodiment, the number of detection through-holes can be one or more, and the shape of the detection through-holes is not limited, such as spiral, stepped or intersecting inclined holes, etc. For example, the detection through-holes are two spiral through-holes with the same size arranged axially. For a 380-mm long bar, the controller pre-sets the qualified range of the height of a single ejected liquid column to be 100 mm - 200 mm; the qualified range of the height difference between two ejected liquid columns is 0 - 30 mm. In this embodiment, two cameras are provided, namely the first camera and the second camera. For a single-shot detection, for the acquired image of the first camera by the controller, when detecting the heights H1 and H2 of two liquid columns, it is required that both H1 and H2 are within the range of 100 mm - 200 mm, and the absolute value of the difference between H1 and H2 is within the range of 0 - 30 mm, then an ok signal 1 is output; for the acquired image of the second camera by the controller, when detecting the heights H3 and H4 of two liquid columns, it is required that both H3 and H4 are within the range of 100 mm - 200 mm, and the absolute value of the difference between H3 and H4 is within the range of 0 - 30 mm, then an ok signal 2 is output; if one of the above ok signal 1 and ok signal 2 is generated, then an ok signal 0 is output; the detection liquid is introduced into the bar three times repeatedly, and the same bar is detected three times repeatedly. If the ok signal 0 is output for more than or equal to two times in the three detections, then a product ok signal is output to determine that the bar is qualified; otherwise, it is determined that the bar is unqualified, and the detection result is saved. The detection liquid used in this embodiment is cutting fluid. The application does not specifically limit the type of the detection liquid. The detected workpiece in this application is not limited to bars, and can be any workpiece with through-holes.

[0067] S4. The controller controls the movement of the material transfer mechanism. The material transfer mechanism moves the bar to the drying mechanism. A sensor can be provided on the drying mechanism to detect whether the bar at the drying mechanism is in place. If so, the drying mechanism operates to dry the bar; if not, the material transfer mechanism repeats moving the bar to the drying mechanism until the sensor detects that the bar at the drying mechanism is in place;

[0068] S5. The controller controls the transfer mechanism to move the bar to the unloading tray assembly and rotates the bar to a horizontal position. A sensor can be installed on the unloading tray assembly to detect whether the bar is in position. If so, proceed to the next step; otherwise, repeat the transfer mechanism's movement to the unloading tray assembly until the sensor detects that the bar is in position. If the controller's stored result for the bar is unqualified, the unloading tray assembly sends the bar to the defective material box. If the controller... If the stored bar material is deemed qualified, the unloading and stacking assembly will send the bar material to the good product box for stacking. The main control unit counts the bar material placed in the good product box and determines whether the good product box is full. If not, the material transfer mechanism will rotate to the loading mechanism. If so, the full box will be manually removed or automatically transported to the automatic box collecting assembly. A sensor can be installed on the fixed base plate of the automatic box collecting assembly. The sensor detects whether three boxes of good product boxes are stacked on the fixed base plate. If so, an alarm will be issued to remove all full boxes. If not, the box collecting continues.

[0069] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hole clogging automatic detection device characterized by comprising: The utility model relates to a kind of rod detection device, including: Rack (20); Feeding mechanism (1) is used to sequentially single feeding for the rod (10) with detection through hole (101); Detection mechanism (2) is located in one side of the feeding mechanism (1), and the detection mechanism (2) includes detection tooling (21) and visual acquisition component (22), the detection tooling (21) is used to communicate detection liquid and the detection through hole (101);Visual acquisition component (22) is located in one side of the detection tooling (21), and it is used to collect the rod (10) spray liquid column image; Material moving mechanism (4) is located between the feeding mechanism (1) and the detection mechanism (2); Controller is respectively communicated with the feeding mechanism (1), detection mechanism (2) and material moving mechanism (4); The feeding mechanism (1) includes: Stock bin component (11) is used to place multiple rods (10) and discharge, and the stock bin component (11) includes stock bin (111) and top material transition block (112), one side of the stock bin (111) is equipped with inlet (113), the other side of the stock bin (111) is equipped with discharge port (114), and multiple top material transition blocks (112) are correspondingly arranged at intervals at the discharge port (114);The top material transition block (112) includes horizontal connecting block (1121) and vertical connecting block (1122); Jacking assembly (12) is located in the discharge side of the stock bin component (11), and the jacking assembly (12) is used to drive single rod (10) to rise and discharge; Position switching component (13) is used to drive the jacking assembly (12) to move horizontally along the discharge direction of the rod (10); The jacking assembly (12) includes top material push plate (121) and first up-down moving part, wherein the upper portion of the top material push plate (121) is equipped with multiple mutually spaced insertion blocks (1211), the insertion block (1211) is vertically inserted into the interval (115) of adjacent top material transition block (112), and the first up-down moving part is used to drive the top material push plate (121) to move up and down;By adjusting the distance of the insertion block (1211) relative to the vertical connecting block (1122), the rod (10) of different cross-sectional dimensions can be lifted.

2. The automatic hole-plugging detection apparatus according to claim 1, characterized by The feeding mechanism (1) further includes: Positioning assembly (14) includes positioning part and pushing part, the positioning part is used to receive the rod (10) discharged by the jacking assembly (12), and the pushing part is used to limit the rod (10) to specific position of the positioning part.

3. The automatic hole-plugging detection apparatus according to any one of claims 1-2, wherein The detection tooling (21) includes: Jig bottom block (211), and the jig bottom block (211) is equipped with liquid channel on it; Sealing element (212), the upper surface of the sealing element (212) is used to place the rod (10), the lower end of the sealing element (212) is communicated with the liquid channel, and the upper end of the sealing element (212) is communicated with the detection through hole (101).

4. The automatic hole-plugging detection apparatus according to any one of claims 1 to 2, characterized by The visual acquisition component (22) includes: Camera (221), and the camera (221) is one or more; A camera lifting part (222) is arranged to drive the camera (221) to lift.

5. The automatic hole-plugging detection apparatus according to any one of claims 1 to 2, characterized by Further comprising: A blow-drying mechanism (5) in communication with the controller is arranged on the opposite side of the feeding mechanism (1) and is used to blow air on the rod (10) and the detection through hole.

6. The automatic hole-plugging detection apparatus according to any one of claims 1 to 2, characterized by Further comprising: A discharging mechanism (6) in communication with the controller is arranged on the opposite side of the detection mechanism (2) and is used to discharge the qualified and unqualified rods (10) into a good product box (30) or a poor product box (40) respectively.

7. The automatic hole-plugging detection apparatus according to any one of claims 1 to 2, characterized by Further comprising: A liquid circulation mechanism (3) in communication with the controller is used to provide the detection liquid to the detection tooling (21) and recover the detection liquid after detection.

8. A control method applied to the hole-plugging automatic detection device according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: The controller controls the feeding mechanism (1) to lift and feed, and the rod (10) is in a horizontal state; The controller controls the movement of the material moving mechanism (4), the material moving mechanism (4) rotates the rod (10) to a vertical state, and the rod (10) is pressed on the sealing element (212); The controller controls the movement of the liquid circulation mechanism (3), the detection liquid is supplied to the detection tooling (21), the camera takes a picture of the jetted liquid column, the controller determines whether the height of the jetted liquid column meets the requirements according to the picture, and gives a judgment result of whether the rod (10) is qualified; The controller controls the movement of the material moving mechanism (4), the material moving mechanism (4) moves the rod (10) to the blow-drying mechanism (5) for blow-drying; The controller controls the movement of the material moving mechanism (4), the material moving mechanism (4) rotates the rod (10) to a horizontal state, and the discharging mechanism (6) discharges the rod (10) on the material moving mechanism (4) according to the judgment result of the controller.

9. The control method for a hole clogging automatic detection device according to claim 8, wherein The controller calculates and analyzes whether the height of the jetted liquid column meets the requirements according to the picture, which comprises the following steps: When a rod (10) is provided with multiple axial detection through holes (101), the controller sets the height range of a single jetted liquid column and the height difference range between the jetted liquid columns in advance, determines whether the actual jetted liquid column heights of the multiple detection through holes (101) meet the height range set in advance, and determines whether the height difference of the multiple actual jetted liquid column heights meets the height difference range set in advance; When a rod (10) is provided with a single axial detection through hole (101), the controller sets the height range of a single jetted liquid column in advance, and determines whether the actual jetted liquid column height of the single detection through hole (101) meets the height range set in advance.

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