Swivel strength detection assembly and detection method thereof

Abstract

This invention proposes an assembly and method for testing the swivel strength of fishing rods, comprising a feeding structure, a testing structure, and a discharging structure. The feeding structure includes a feeding component and a photoelectric switch, with the photoelectric switch located at the end of the feeding component to detect whether the fishing rod is in position. The testing structure includes a large plate, a fixed motor that drives the large plate to a preset position according to the length of the fishing rod, front and rear V-groove cylinders for positioning the center of the fishing rod, front and rear rod clamping cylinders for clamping and fixing the fishing rod, a rope clamping mechanism, and upper and lower clamping cylinders for clamping or releasing the rope. A detection photoelectric sensor is located behind the rope clamping mechanism. The upper and lower clamping cylinders are mounted on the rope clamping mechanism, and the rope is connected to a torque motor. This invention provides an assembly and method for testing the swivel strength of fishing rods, improving automation, testing efficiency, and testing stability compared to existing technologies for testing the swivel strength of fishing rods.

Description

Technical Field

[0001] This invention belongs to the technical field of fishing gear testing equipment, specifically relating to a swivel strength testing assembly and its testing method. Background Technology

[0002] The swivel is a crucial component of a fishing rod, and its strength directly affects the rod's reliability and safety during actual use. During the rod's manufacturing process, the swivel must withstand the tension transmitted by the fishing line. If the swivel is not strong enough, it may break during use, leading to lost fish or even injury to the user.

[0003] Currently, the strength testing of fishing rod swivels is mostly conducted manually or semi-automatically. In existing technologies, fishing rod tensile strength testing typically involves manually holding the rod and connecting it to simulated fishing objects of varying weights via fishing line, swinging it in various directions, and observing the changes in the rod to determine its ability to withstand the tensile force. This method is time-consuming and labor-intensive. Patent document CN216309633U discloses a tensile strength testing device that uses a fixing block to secure the fishing rod. A pull rope on a connecting plate, wound around the swivel, connects to the rod tip. A gear is mounted on the pull rope and meshes with a rack. During manual traction of the connecting plate, the gear drives the pull rope to rotate, thus applying pressure to the fishing rod. However, this device has a relatively fixed bending direction for tensile strength testing, cannot comprehensively detect the force on the fishing rod, and has low testing efficiency.

[0004] In addition, existing fishing rod swivel strength testing equipment has the following shortcomings: low degree of automation, a lot of manual intervention is required in each of the feeding, positioning, testing and unloading stages, the testing efficiency cannot meet the needs of mass production, manual operation also makes the clamping and force application of the swivel unstable during the testing process, affecting the accuracy of the test results, and if the results are inaccurate, there is a lack of automated abnormality detection and rejection functions. Summary of the Invention

[0005] The purpose of this invention is to provide a swivel strength testing assembly and its testing method, which solves the technical problems of low automation, low testing efficiency and insufficient testing stability in the existing fishing rod swivel strength testing. This invention provides a swivel strength testing assembly, which aims to realize fully automatic testing of fishing rod swivel strength and improve testing efficiency and accuracy.

[0006] A slewing strength testing assembly includes a feeding structure, a testing structure, and a discharging structure;

[0007] The feeding structure includes a feeding component and a photoelectric switch. The photoelectric switch is located at the end of the feeding component and is used to detect whether the fishing rod is in place.

[0008] More preferably, multiple photoelectric switches are sequentially installed on the feeding rack along the direction of the fishing rod conveying, with the last photoelectric switch used to detect whether the fishing rod is in position. When the feeding rack moves forward under the drive of the stepper motor, the fishing rod moves forward with the feeding rack until the last photoelectric switch detects the fishing rod, at which point the feeding rack stops moving, completing the feeding action.

[0009] The detection structure includes a large plate, a fixed motor that drives the large plate to move to a preset position according to the length of the fishing rod, a front and rear V-groove cylinder for positioning the center of the fishing rod, a front and rear rod clamping cylinder for clamping and fixing the fishing rod, a rope clamping mechanism, and upper and lower clamping cylinders for clamping or releasing the rope. A detection photoelectric sensor is provided behind the rope clamping mechanism.

[0010] In detail, the fixed motor drives the large plate to move to a preset position according to the rod length parameter to adapt to the testing requirements of different length rods; after the material is loaded, the front and rear rod-aligning V-groove cylinders extend, and the V-groove structure rod-aligning component clamps and positions the rod from the front and rear directions, aligning the center position of the rod with the center line of the testing station; the front and rear rod-clamping cylinders extend, clamping and fixing the rod from both front and rear directions to ensure that the rod will not shift during subsequent testing; the fixed motor rotates forward, driving the moving part to move forward a predetermined distance (about 90mm), and then the fixed motor reverses, driving the moving part to slowly retreat a predetermined distance (about 80mm), so that the pull rope is in an appropriate pre-tension state; after the moving part retreats to the correct position, the upper and lower clamping cylinders extend to clamp the pull rope.

[0011] The torque motor is set to a torque value according to the preset tension requirement. After the upper and lower clamping cylinders clamp the pull rope, the torque motor starts and applies tension to the fishing rod swivel through the pull rope. When the tension reaches the specified value, the torque motor stops running, the upper and lower clamping cylinders retract, and the pull rope is released.

[0012] After the pull rope is released, the fixed motor continues to rotate, driving the moving part to continue to retreat to the initial position, waiting for the next test; this solution has a total of three test stations. During the test, if the pull rope breaks or there is no fishing rod at the station, the rope clamping mechanism moves backward as a whole. When the detection photoelectric sensor detects the backward movement signal of the rope clamping mechanism, the system determines that the test at that station is unqualified.

[0013] The upper and lower clamping cylinders are mounted on the rope clamping mechanism. The pull rope is connected to the torque motor and is used to apply tension to the fishing rod swivel. The fixed motor drives the moving part to reciprocate along the length of the fishing rod.

[0014] When the rope clamping mechanism moves backward to the sensing area of ​​the detection photoelectric sensor, the detection photoelectric sensor sends a signal to the control system, determining that the detection at this station is unqualified.

[0015] The fixed motor is a servo motor, which is connected to the moving part through a transmission mechanism, driving the moving part to reciprocate along the length of the fishing rod.

[0016] The feeding assembly includes a conveyor belt assembly and a stepper motor, which drives the conveyor belt assembly to reciprocate along the conveying direction.

[0017] The feeding system includes a conveyor chain plate located below the inspection station for receiving and transporting fishing rods after inspection. A receiving trolley is provided at the end of the conveyor chain plate for collecting fishing rods that have passed inspection. A rotary cylinder is provided at the rejection position of the conveyor chain plate for pushing fishing rods that have failed inspection into the waste rod temporary storage station.

[0018] The detection structure is equipped with three detection stations, which simultaneously perform swivel strength testing on three fishing rods.

[0019] Specifically, after the inspection is completed, the front and rear clamping cylinders retract first, releasing the fishing rod; the front and rear rod-aligning V-groove cylinders retract, releasing the positioning of the fishing rod, and the fishing rod falls onto the conveyor chain plate. The conveyor chain plate starts running, conveying the fishing rod to the lower end of the material; the fishing rods that pass the inspection are conveyed to the receiving trolley along with the conveyor chain plate, and are collected by the receiving trolley; the fishing rods that fail the inspection are controlled by the pitch of the conveyor chain plate. When the abnormal fishing rod is conveyed to the rejection position, the rotating cylinder receiving the abnormal rod swings, rejecting the abnormal fishing rod from the conveyor chain plate to the waste rod temporary storage station.

[0020] The front and rear V-groove cylinders are arranged in pairs and installed at the front and rear ends of the fishing rod respectively. Each of the front and rear V-groove cylinders has a V-shaped groove block at the end of its piston rod, and the inner surface of the V-shaped groove block is provided with a rubber pad layer.

[0021] The front and rear rod clamping cylinders are arranged in pairs and installed at the front and rear ends of the fishing rod respectively. The parts of the clamping claws of the front and rear rod clamping cylinders that contact the fishing rod are provided with flexible pads.

[0022] It also includes a control system, which is electrically connected to a stepper motor assembly, a photoelectric switch, a fixed motor, front and rear rod alignment V-groove cylinders, front and rear rod clamping cylinders, upper and lower clamping cylinders, a torque motor, the transmission chain plate, the running chain plate, and the rotary cylinder.

[0023] The control system is used to receive the detection signal from the photoelectric switch and control the stepper motor to stop; control the forward and reverse rotation and the number of rotations of the fixed motor to drive the moving part to reciprocate; control the extension and retraction of the front and rear rod V-groove cylinders, front and rear rod clamping cylinders, upper and lower clamping cylinders and rotary cylinders; control the start, stop and torque value of the torque motor; and record the detection results of each station and control the action of the rotary cylinder according to the detection results.

[0024] The control system is a PLC programmable logic controller. The control system also includes a human-machine interface for inputting fishing rod length parameters, preset tension values ​​and motor speeds, as well as real-time monitoring of equipment operating status and detection results at each workstation.

[0025] A method for testing the strength of a slewing ring, employing a slewing ring strength testing assembly, is characterized by comprising the following steps:

[0026] Step S1: The stepper motor drives the feeding assembly to move. When the last photoelectric switch detects the fishing rod, the stepper motor stops, and the feeding is completed.

[0027] Step S2: The fixed motor drives the large plate to move to the preset position according to the length of the fishing rod; the front and rear rod-aligning V-groove cylinders extend to position the center of the fishing rod; the front and rear rod-clamping cylinders extend to clamp and fix the fishing rod.

[0028] The fixed motor rotates forward to drive the moving part to move back and forth, and the upper and lower clamping cylinders extend to clamp the pull rope;

[0029] The torque motor starts according to the preset tension value and stops after reaching the specified tension. The upper and lower clamping cylinders retract to release the rope.

[0030] The fixed motor drives the moving part to retract to the initial position;

[0031] Step S3: If the rope breaks or there is no fishing rod, the rope clamping mechanism moves backward as a whole. After the photoelectric sensor detects this, the station is determined to be unqualified.

[0032] Step S4: The front and rear clamping cylinders retract, the front and rear rod alignment V-groove cylinders retract, the fishing rod falls onto the conveyor chain plate, and the conveyor chain plate starts running; the fishing rods that are detected as normal fall into the receiving trolley; the fishing rods that are detected as abnormal are conveyed to the rejection position through the pitch control of the running chain plate, and the rotating cylinder swings to reject the fishing rods that are detected as abnormal to the waste rod temporary storage station.

[0033] The technical details not described in this solution are based on the conventional understanding of those skilled in the art and can be implemented in conjunction with existing technologies, and will not be elaborated further here.

[0034] This invention achieves the following significant effects:

[0035] (1) The strength test of the fishing rod swivel is decomposed into several standardized processes such as feeding, positioning, clamping, pre-tightening, force application, judgment, unloading and sorting by an automated control system. Each process is automatically completed by the corresponding actuator (motor, cylinder) in a predetermined order. In the core test link, the torque motor applies a precise and controllable tension to the fishing rod swivel to simulate the tension condition of the fishing rod in actual use. During the test, the backward movement of the rope clamping mechanism is used as an abnormal signal of rope breakage or rodlessness, which is automatically identified by the detection photoelectric, realizing the automatic detection and recording of abnormal conditions. The whole process is completed automatically without manual intervention, which greatly reduces labor intensity, improves test efficiency and enhances the efficiency of fully automated test.

[0036] (2) This solution has three testing stations, which can simultaneously test the swivel strength of three fishing rods, significantly improving the production efficiency of batch testing and realizing parallel testing at multiple stations;

[0037] (3) By using the rope clamping mechanism to move backward and cooperate with the photoelectric sensing mechanism, it can automatically identify abnormal situations such as rope breakage or no pole, and automatically remove abnormal products to the waste pole temporary storage station through the rotary cylinder, realizing automatic sorting of qualified and unqualified products, and realizing automatic abnormal detection and waste removal.

[0038] (4) The fixed motor can automatically adjust the position of the large plate according to the length of the fishing rod. With the center positioning of the front and rear rod-aligning V-groove cylinders and the clamping and fixing of the front and rear rod-clamping cylinders, it can adapt to the detection requirements of fishing rods of different lengths and realize adaptive rod length positioning.

[0039] (5) The rope is precisely pre-tightened by the forward and reverse rotation of the fixed motor. The torque motor can apply force precisely according to the preset tension value, which ensures the consistency of the detection conditions and the accuracy of the detection results. The detection process is safe and reliable: the action sequence of each cylinder and motor is precisely controlled by the control system, avoiding equipment damage or personal injury that may be caused by misoperation. Attached Figure Description

[0040] Figure 1 This is a front view of the assembly for the swivel strength testing system of the present invention.

[0041] Figure 2 This is a schematic diagram of the overall structure of the rotating ring strength testing assembly of the present invention.

[0042] Figure 3 This is a schematic diagram of the internal structure of the rotating ring strength testing assembly of the present invention.

[0043] Figure 4 This is a schematic diagram of the detection structure of the present invention.

[0044] Figure 5 This is a schematic diagram of the feeding structure of the present invention.

[0045] Figure 6 This is a schematic diagram of the installation structure of the material feeding structure of the present invention.

[0046] The markings in the diagram are as follows: 1. Feeding assembly; 2. Stepper motor; 3. Photoelectric switch; 4. Fixed motor; 5. Large plate; 6. Front and rear rod alignment V-groove cylinders; 7. Front and rear rod clamping cylinders; 8. Upper and lower clamping cylinders; 9. Torque motor; 10. Moving part; 11. Rope clamping mechanism; 12. Detection photoelectric sensor; 13. Conveyor chain plate; 14. Receiving trolley; 15. Running chain plate; 16. Rotary cylinder. Detailed Implementation

[0047] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0048] See Figures 1-6 A slewing strength testing assembly includes a feeding structure, a testing structure, and a discharging structure;

[0049] The feeding structure includes a feeding component 1 and a photoelectric switch 3. The photoelectric switch 3 is located at the end of the feeding component 1 and is used to detect whether the fishing rod is in place.

[0050] More preferably, multiple photoelectric switches 3 are sequentially arranged on the feeding rack along the direction of the fishing rod conveying, with the last photoelectric switch 3 used to detect whether the fishing rod is in position. When the feeding rack moves forward under the drive of the stepper motor 2, the fishing rod moves forward with the feeding rack until the last photoelectric switch 3 detects the fishing rod, at which point the feeding rack stops moving, completing the feeding action.

[0051] The detection structure includes a large plate 5, a fixed motor 4 that drives the large plate 5 to move to a preset position according to the length of the fishing rod, a front and rear rod V-groove cylinder 6 for positioning the center of the fishing rod, a front and rear rod clamping cylinder 7 for clamping and fixing the fishing rod, a rope clamping mechanism 11, and an upper and lower clamping cylinder 8 for clamping or releasing the rope. A detection photoelectric sensor 12 is provided behind the rope clamping mechanism 11.

[0052] In detail, the fixed motor 4 drives the large plate 5 to move to the preset position according to the rod length parameter of the fishing rod to adapt to the testing requirements of fishing rods of different lengths; after the material is loaded into place, the front and rear rod-aligning V-groove cylinders 6 extend, and the V-groove structure rod-aligning component clamps and positions the fishing rod from the front and rear directions, so that the center position of the fishing rod is aligned with the center line of the testing station; the front and rear rod-clamping cylinders 7 extend and clamp and fix the fishing rod from the front and rear directions to ensure that the fishing rod will not be displaced during the subsequent testing process;

[0053] When the fixed motor 4 rotates in the forward direction, for example, it can drive the moving part 10 to move forward a predetermined distance of about 90mm. Then the fixed motor 4 reverses and drives the moving part 10 to slowly move backward a predetermined distance of about 80mm, so that the pull rope is in a proper pre-tension state. After the moving part 10 moves backward to the position, the upper and lower clamping cylinders 8 extend to clamp the pull rope.

[0054] The torque motor 9 is set to a torque value according to the preset tension requirement. After the upper and lower clamping cylinders 8 clamp the pull rope, the torque motor 9 starts and applies tension to the fishing rod swivel through the pull rope. When the tension reaches the specified value, the torque motor 9 stops running, the upper and lower clamping cylinders 8 retract, and the pull rope is released.

[0055] After the pull rope is released, the fixed motor 4 continues to rotate, driving the moving part 10 to continue to retreat to the initial position, waiting for the next test; this solution has three test stations. During the test, if the pull rope breaks or there is no fishing rod at the station, the rope clamping mechanism 11 moves backward as a whole. When the detection photoelectric sensor 12 senses the backward movement signal of the rope clamping mechanism 11, the system determines that the test at that station is unqualified.

[0056] The upper and lower clamping cylinders 8 are set on the rope clamping mechanism 11. The rope is connected to the torque motor 9 and is used to apply tension to the fishing rod swivel. The fixed motor 4 drives the moving part 10 to move back and forth along the length of the fishing rod.

[0057] When the rope clamping mechanism 11 moves backward to the sensing area of ​​the detection photoelectric sensor 12, the detection photoelectric sensor 12 sends a signal to the control system, determining that the detection at this station is unqualified.

[0058] The fixed motor 4 is a servo motor. The fixed motor 4 is connected to the moving part 10 through a transmission mechanism, driving the moving part 10 to move back and forth along the length of the fishing rod.

[0059] The feeding assembly 1 includes a conveyor belt assembly and a stepper motor 2, which drives the conveyor belt assembly to reciprocate along the conveying direction.

[0060] The feeding system includes a conveyor chain plate 13 located below the inspection station, which is used to receive and transport the fishing rods after inspection. A receiving trolley 14 is provided at the end of the conveyor chain plate 13 to collect the fishing rods that pass the inspection. A rotary cylinder 16 is provided at the rejection position of the conveyor chain plate 13 to push the fishing rods that fail the inspection into the waste rod temporary storage station.

[0061] The testing structure is equipped with three testing stations, which can simultaneously perform swivel strength testing on three fishing rods.

[0062] Specifically, after the inspection is completed, the front and rear clamping cylinders retract first, releasing the fishing rod; the front and rear rod alignment V-groove cylinders 6 retract, releasing the positioning of the fishing rod, and the fishing rod falls onto the conveyor chain plate 13. The conveyor chain plate 13 starts running, conveying the fishing rod to the lower end of the material; the fishing rods that pass the inspection are conveyed to the receiving trolley 14 along with the conveyor chain plate 13, and are collected by the receiving trolley 14; the fishing rods that fail the inspection are controlled by the pitch of the running chain plate 15. When the abnormal fishing rod is conveyed to the rejection position, the rotating cylinder 16 that receives the abnormal rod swings, rejecting the abnormal fishing rod from the conveyor chain plate 13 to the waste rod temporary storage station.

[0063] The front and rear V-groove cylinders 6 are arranged in pairs and installed at the front and rear ends of the fishing rod respectively. Each front and rear V-groove cylinder 6 has a V-shaped groove block at the end of the piston rod, and a rubber pad layer is provided on the inner surface of the V-shaped groove block.

[0064] The front and rear rod clamping cylinders 7 are set in pairs and installed at the front and rear ends of the fishing rod respectively. The parts of the clamping claws of the front and rear rod clamping cylinders 7 that contact the fishing rod are provided with flexible pads.

[0065] It also includes a control system, which is electrically connected to stepper motor 2, photoelectric switch 3, fixed motor 4, front and rear rod alignment V-groove cylinder 6, front and rear rod clamping cylinder 7, upper and lower clamping cylinder 8, torque motor 9, transmission chain plate 13, running chain plate 15 and rotary cylinder 16.

[0066] The control system is used to receive the detection signal from the photoelectric switch 3 and control the stepper motor 2 to stop; control the forward and reverse rotation and the number of rotations of the fixed motor 4 to drive the moving part 10 to reciprocate; control the extension and retraction of the front and rear rod V-groove cylinders 6, the front and rear rod clamping cylinders 7, the upper and lower clamping cylinders 8 and the rotary cylinder 16; control the start, stop and torque value of the torque motor 9; and record the detection results of each station and control the action of the rotary cylinder 16 according to the detection results.

[0067] The control system is a PLC programmable logic controller. The control system also includes a human-machine interface for inputting fishing rod length parameters, preset tension values ​​and motor speeds, as well as real-time monitoring of equipment operating status and detection results at each station.

[0068] The working process of this device is as follows:

[0069] The first stage is the loading phase, where the fishing rods to be tested are placed on the loading rack assembly 1. After starting the equipment, the stepper motor 2 starts, driving the loading rack to move along the conveying direction. The fishing rods on the loading rack move forward with it. When the last photoelectric switch 3 detects that the fishing rod has reached the loading position, it sends a position signal to the control system. After receiving the position signal, the control system stops the stepper motor 2, the loading rack stops moving, and the loading is complete.

[0070] Preferably, the stepper motor 2 has an adjustable moving speed to adapt to different production efficiency requirements. The photoelectric switch 3 can be a through-beam photoelectric switch 3 or a reflective photoelectric switch 3.

[0071] Next, the testing phase begins. First, the large plate 5 is positioned. After the material is loaded, the control system starts the fixed motor 4 according to the preset fishing rod length parameters. The fixed motor 4 drives the large plate 5 to move along the length of the fishing rod to the preset position through the transmission mechanism, so that the testing station is aligned with the testing part of the fishing rod.

[0072] The fixed motor 4 is preferably a servo motor to ensure the accuracy of the positioning of the large plate 5. The relationship between the moving distance of the large plate 5 and the length of the fishing rod is pre-stored in the memory of the control system;

[0073] Following rod center positioning, after the large plate 5 is positioned, the front and rear V-groove cylinders 6 extend simultaneously. The piston rods of the front V-groove cylinder at the front end of the fishing rod and the rear V-groove cylinder at the rear end extend, causing the V-shaped groove block to clamp the fishing rod from the front and rear directions. After the V-shaped groove block contacts the outer wall of the fishing rod, the automatic centering function of the V-groove is used to adjust the center position of the fishing rod to be aligned with the center line of the detection station.

[0074] The preferred operating time of the front and rear V-groove cylinders 6 is 0.5-2 seconds, and the specific time can be adjusted according to the cylinder stroke and air supply pressure. The inner surface of the V-groove block is preferably provided with a rubber pad to avoid damage to the fishing rod surface.

[0075] Next, the fishing rod is secured. After the rod center is positioned, the front and rear clamping cylinders 7 extend simultaneously. The piston rods of the front and rear clamping cylinders 7 extend, clamping and securing the fishing rod from both the front and rear directions. The clamping force should be moderate, ensuring that the fishing rod does not move axially or rotate during subsequent testing, while also avoiding damage to the surface of the fishing rod due to excessive clamping force.

[0076] The clamping force of the front and rear rod clamping cylinders 7 can be controlled by adjusting the air supply pressure. The contact points between the clamping jaws of the front and rear rod clamping cylinders 7 and the fishing rod are preferably equipped with flexible pads.

[0077] After the rope is pre-tensioned and the fishing rod is securely fixed, the fixed motor 4 rotates forward, driving the moving part 10 to move forward approximately 90mm along the length of the fishing rod via the transmission mechanism. Once the moving part 10 has reached its forward position, the fixed motor 4 reverses direction, driving the moving part 10 to slowly retract approximately 80mm. This back-and-forth movement ensures that the rope connecting the fishing rod swivel and the torque motor 9 is properly pre-tensioned.

[0078] After the moving part 10 retracts to its position, the control system controls the upper and lower clamping cylinders 8 to extend. The piston rod of the upper and lower clamping cylinders 8 extends to clamp the pull rope, preventing the pull rope from slipping when the torque motor 9 is started.

[0079] Next, a tension test is performed. After the upper and lower clamping cylinders 8 clamp the pull rope, the control system controls the torque motor 9 to start. The torque motor 9 sets the torque value according to the preset tension requirements and applies a gradually increasing tension to the fishing rod swivel through the pull rope.

[0080] The torque value of the torque motor 9 can be preset according to the swivel strength requirements of different fishing rod models. After the torque motor 9 starts, the pulling force gradually increases. When the preset pulling force value is reached, the torque sensor sends a signal to the control system, and the control system controls the torque motor 9 to stop running.

[0081] After the torque motor 9 stops, it maintains the current tension state for a predetermined time t to simulate the continuous stress state in actual use. Subsequently, the control system controls the upper and lower clamping cylinders 8 to retract, releasing the pull rope.

[0082] After the pull rope is released, the control system controls the fixed motor 4 to continue rotating, driving the moving part 10 to continue retracting to the initial position, ready for the next test.

[0083] Finally, there's the anomaly detection. This invention features three detection stations, each capable of simultaneously detecting three fishing rods. During detection, if a rope breaks or no fishing rod is found at a particular station, the rope clamping mechanism 11 moves backward. A detection photoelectric sensor 12 is located behind the rope clamping mechanism 11. When the rope clamping mechanism 11 moves backward into the sensing area of ​​the photoelectric sensor 12, the photoelectric sensor 12 sends a signal to the control system. Upon receiving this signal, the control system determines that the detection at that station is unqualified and records the anomaly information for that station.

[0084] The photoelectric sensor 12 is preferably a proximity switch or a photoelectric sensor.

[0085] Finally, in the unloading stage, the fishing rod is first conveyed and inspected. After inspection, the control system controls the front and rear clamping cylinders to retract, releasing the fishing rod. Then, the front and rear rod-aligning V-groove cylinders 6 retract, releasing the positioning of the fishing rod. The fishing rod falls onto the conveyor chain plate 13 under gravity. The conveyor chain plate 13 starts running, conveying the fishing rod to the lower end.

[0086] Subsequently, qualified products are collected. For fishing rods that pass the inspection, the conveyor chain 13 transports them to the receiving trolley 14 at the end for unified collection. The receiving trolley 14 is preferably equipped with a buffer pad to prevent damage to the fishing rods when they fall in.

[0087] For fishing rods that are found to be abnormal, the control system, based on the abnormal information recorded during the detection phase, controls the pitch of the conveyor chain 15. When the abnormal fishing rod is conveyed to the rejection position by the conveyor chain 13, the control system controls the rotary cylinder 16 to start. The piston rod of the rotary cylinder 16 extends and swings, pushing the abnormal fishing rod off the conveyor chain 13 to the waste rod temporary storage station.

[0088] The pitch control of the conveyor chain 15 ensures that abnormal fishing rods are accurately transported to the removal position. The swing angle of the rotary cylinder 16 is preferably 90-180 degrees to ensure that abnormal fishing rods can be completely pushed away from the conveyor chain 13.

[0089] The invention also includes a control system, which uses a PLC programmable logic controller as the core control unit. The control system is electrically connected to the stepper motor 2, photoelectric switch 3, fixed motor 4, front and rear rod alignment V-groove cylinder 6, front and rear rod clamping cylinder 7, upper and lower clamping cylinder 8, torque motor 9, detection photoelectric sensor 12, conveyor chain plate 13, running chain plate 15, and rotary cylinder 16.

[0090] The control system performs the following control functions: receiving detection signals from photoelectric switch 3 and detection photoelectric sensor 12; controlling the start, stop, and speed of stepper motor 2; controlling the forward and reverse rotation, speed, and number of revolutions of stationary motor 4; controlling the extension and retraction of front and rear rod alignment V-groove cylinders 6, front and rear rod clamping cylinders 7, upper and lower clamping cylinders 8, and rotary cylinder 16; controlling the start, stop, and torque value of torque motor 9; controlling the start, stop, and running speed of conveyor chain plate 13 and running chain plate 15; recording and storing the pass / fail detection results of each station; and controlling the action of rotary cylinder 16 based on the detection results to achieve automatic rejection of defective products.

[0091] The control system also includes a human-machine interface such as a touch screen, which is used by operators to input process parameters such as fishing rod length, preset tension value, and speed of each motor, as well as to monitor the operating status of the equipment and the test results of each station in real time.

[0092] Example 2

[0093] A method for testing the strength of a slewing ring, employing a slewing ring strength testing assembly, is characterized by comprising the following steps:

[0094] Step S1: Stepper motor 2 drives feeding assembly 1 to move. When the last photoelectric switch 3 detects the fishing rod, stepper motor 2 stops, and feeding is completed.

[0095] Step S2: The fixed motor 4 drives the large plate 5 to move to the preset position according to the length of the fishing rod; the front and rear rod-aligning V-groove cylinders 6 extend to position the center of the fishing rod; the front and rear rod-clamping cylinders 7 extend to clamp and fix the fishing rod.

[0096] The fixed motor 4 rotates in the forward direction to drive the moving part 10 to move back and forth, and the upper and lower clamping cylinder 8 extends to clamp the rope.

[0097] The torque motor 9 starts according to the preset tension value and stops after reaching the specified tension. The upper and lower clamping cylinders 8 retract and release the rope.

[0098] The fixed motor 4 drives the moving part 10 to retract to the initial position;

[0099] Step S3: If the rope breaks or there is no fishing rod, the rope clamping mechanism 11 moves backward as a whole. After the photoelectric sensor 12 detects this, it determines that the station is unqualified.

[0100] Step S4: The front and rear clamping cylinders retract, the front and rear rod alignment V-groove cylinders 6 retract, the fishing rod falls onto the conveyor chain plate 13, and the conveyor chain plate 13 starts running; the fishing rods that are found to be normal fall into the receiving trolley 14; the fishing rods that are found to be abnormal are conveyed to the rejection position by the pitch control of the running chain plate 15, and the rotating cylinder 16 swings to reject the fishing rods that are found to be abnormal to the waste rod temporary storage position.

[0101] The technical features of this invention not described can be implemented by or using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this invention, and this invention is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention should also be within the protection scope of this invention.

Claims

1. A slewing strength testing assembly, characterized in that, This includes the feeding structure, the detection structure, and the unloading structure; The feeding structure includes a feeding component (1) and a photoelectric switch (3). The photoelectric switch (3) is located at the end of the feeding component (1) and is used to detect whether the fishing rod is in place. The detection structure includes a large plate (5), a fixed motor (4) that drives the large plate (5) to move to a preset position according to the length of the fishing rod, a front and rear rod-aligning V-groove cylinder (6) for positioning the center of the fishing rod, a front and rear rod-clamping cylinder (7) for clamping and fixing the fishing rod, a rope clamping mechanism (11), and an upper and lower clamping cylinder (8) for clamping or releasing the rope. A detection photoelectric sensor (12) is provided behind the rope clamping mechanism (11). The upper and lower clamping cylinders (8) are mounted on the rope clamping mechanism (11). The pull rope is connected to the torque motor (9) and is used to apply tension to the fishing rod swivel. The fixed motor (4) drives the moving part (10) to move back and forth along the length of the fishing rod.

2. The slewing ring strength testing assembly according to claim 1, characterized in that, The feeding system includes a conveyor chain plate (13) located below the inspection station for receiving and transporting fishing rods after inspection. A receiving trolley (14) is provided at the end of the conveyor chain plate (13) for collecting fishing rods that pass inspection. A rotary cylinder (16) is provided at the rejection position of the conveyor chain plate (13) for pushing fishing rods that fail inspection into the waste rod temporary storage station.

3. The slewing ring strength testing assembly according to claim 1, characterized in that, The detection structure is equipped with three detection stations, which simultaneously perform swivel strength testing on three fishing rods.

4. The slewing ring strength testing assembly according to claim 1, characterized in that, The front and rear V-groove cylinders (6) are arranged in pairs and installed at the front and rear ends of the fishing rod respectively. Each of the front and rear V-groove cylinders (6) has a V-shaped groove at the end of the piston rod and a rubber pad layer on the inner surface of the V-shaped groove.

5. The slewing ring strength testing assembly according to claim 1, characterized in that, The front and rear rod clamping cylinders (7) are arranged in pairs and installed at the front and rear ends of the fishing rod respectively. The parts of the clamping claws of the front and rear rod clamping cylinders (7) that contact the fishing rod are provided with flexible pads.

6. The slewing ring strength testing assembly according to claim 1, characterized in that, It also includes a control system, which is electrically connected to a stepper motor (2), a photoelectric switch (3), a fixed motor (4), a front and rear rod alignment V-groove cylinder (6), a front and rear rod clamping cylinder (7), an upper and lower clamping cylinder (8), a torque motor (9), the transmission chain plate (13), the running chain plate (15), and a rotary cylinder (16).

7. The slewing ring strength testing assembly according to claim 1, characterized in that, The control system is a PLC programmable logic controller. The control system also includes a human-machine interface for inputting fishing rod length parameters, preset tension values ​​and motor speeds, as well as real-time monitoring of equipment operating status and detection results at each workstation.

8. A method for testing the strength of a slewing ring, comprising the slewing ring strength testing assembly as described in any one of claims 1 to 7, characterized in that, Includes the following steps: Step S1: The stepper motor (2) drives the feeding assembly (1) to move. When the last photoelectric switch (3) detects the fishing rod, the stepper motor (2) stops, and the feeding is completed. Step S2: Fix the motor (4) to drive the large plate (5) to move to the preset position according to the length of the fishing rod; extend the front and rear rod-aligning V-groove cylinders (6) to position the center of the fishing rod; extend the front and rear rod-clamping cylinders (7) to clamp and fix the fishing rod. The fixed motor (4) rotates to drive the moving part (10) to move back and forth, and the upper and lower clamping cylinder (8) extends to clamp the rope. The torque motor (9) starts according to the preset tension value and stops after reaching the specified tension. The upper and lower clamping cylinders (8) retract and release the rope. The fixed motor (4) drives the moving part (10) to retract to the initial position; Step S3: If the rope breaks or there is no fishing rod, the rope clamping mechanism (11) moves backward as a whole. The photoelectric sensor (12) detects this and determines that the station is unqualified. Step S4: The front and rear clamping cylinders retract, the front and rear rod alignment V-groove cylinders (6) retract, the fishing rod falls onto the conveyor chain plate (13), and the conveyor chain plate (13) starts running; the fishing rods that are detected as normal fall into the receiving trolley (14); the fishing rods that are detected as abnormal are conveyed to the rejection position through the pitch control of the running chain plate (15), and the rotating cylinder (16) swings to reject the fishing rods that are detected as abnormal to the waste rod temporary storage position.

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