Assembly detection device and detection method for elastic clamp spring type connecting buckle

Abstract

The invention discloses an assembly detection device and detection method for an elastic clamp spring type connecting buckle, the device comprises a detection station provided with a detection placing table and a clamping mechanism and a detection device driven by a horizontal moving mechanism, the detection device comprises a vertical linear cylinder, the lower end of the vertical linear cylinder is connected with a sensor assembly, and the sensor assembly is connected with the detection placing table. The sensor assembly is provided with a plurality of gap detection sensors; the vertical linear air cylinder drives the sensor assembly to downwards press the base of the connecting buckle. When the sensor assembly presses the base of the buckle downwards, the gap detection sensor detects the gap of the base separated relative to the upper cover. The detection method comprises the following steps: placing the buckle and fixing the upper cover, moving the tool to a detection station, driving the separation extrusion block to generate a gap between the upper cover and the base, and acquiring data by the sensor and judging whether the assembly is abnormal or not. According to the invention, through the annularly and uniformly distributed sensors, tiny gaps and inclination offset are accurately captured, and defective products with snap springs not installed in place can be reliably identified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical assembly quality detection, and in particular to an elastic spring type connector assembly detection device and method. BACKGROUND

[0002] The female head of a connector for fire-fighting and the like is usually assembled by connecting the upper cover and the base through the internal elastic spring. Since the spring is located inside the connector, it cannot be directly visually inspected, and therefore an indirect method is required to detect whether it is installed in place.

[0003] At present, the closest existing detection method is manual detection: the operator rotates a connector male head with external threads into the internal threads of the upper cover of the assembled connector female head, and presses the base of the connector by rotating the male head. Under the pressing action, if the internal spring does not completely fall into the corresponding groove, a small gap or slight angular tilt will be generated between the upper cover and the base. The operator relies on the naked eye to observe the size of the gap to determine whether the assembly is qualified. However, this manual detection method has obvious defects:

[0004] High labor intensity and low efficiency: manual rotation of the male head and application of a large rotating force are required, and the repetitive labor intensity is high, which is not conducive to automatic production rhythm.

[0005] Low detection accuracy and prone to missed detection: small gap changes or slight angular tilts are difficult to be stably recognized by the human eye, there are individual judgment differences and missed detection risks due to fatigue, and the quality control stability is poor.

[0006] Cannot be dataized: the detection results depend on subjective judgment by humans, it is difficult to form objective and recordable data, and it is not convenient for subsequent quality analysis and traceability.

[0007] Therefore, there is an urgent need for an abnormal detection technology scheme that can automatically, accurately and reliably complete the assembly of the elastic spring type connector. SUMMARY

[0008] In view of the above-mentioned deficiencies in the prior art, the present application provides an elastic spring type connector assembly detection device and method, which realizes accurate capture and quantitative judgment of the small separation gap and angular tilt between the connector upper cover and the base, thereby reliably identifying defective products with the spring not installed in place.

[0009] To achieve the above-mentioned purpose, the first aspect of the present application provides an elastic spring type connector assembly detection device, which comprises:

[0010] A detection station is provided with a detection placement table for placing the connector base to be detected and a clamping mechanism for fixing the connector upper cover to be detected;

[0011] The detection device is driven by the horizontal moving mechanism to move above or away from the detection station; the detection device comprises a vertical linear cylinder, the lower end of the vertical linear cylinder is connected with a sensor assembly, the sensor assembly is provided with a plurality of gap detection sensors; the vertical linear cylinder drives the sensor assembly to press the base of the joint tightly downward or to drive the sensor assembly to separate from the joint and return to the initial station upward;

[0012] When the sensor assembly presses the base of the joint tightly downward, the gap detection sensors detect the gap between the base and the upper cover.

[0013] In some embodiments of the first aspect of the application, the clamping mechanism is a pneumatic finger, the pneumatic finger comprises a finger cylinder and a plurality of clamping claws uniformly distributed along the circumferential direction of the finger cylinder, the clamping claws are used to clamp the upper cover of the joint.

[0014] In some embodiments of the first aspect of the application, the horizontal moving mechanism comprises a translation linear cylinder, a detection workbench and a linear guide rail;

[0015] The translation linear cylinder is connected with the detection workbench;

[0016] The linear guide rail is laid above the detection placement table;

[0017] The detection workbench is slidably connected with the linear guide rail through a sliding block assembly;

[0018] The detection device is arranged on the detection workbench, and the detection device reciprocally moves along the linear guide rail between the waiting station and the detection station under the driving of the translation linear cylinder.

[0019] In some embodiments of the first aspect of the application, two detection station limiting devices are arranged on the detection placement table, the detection station limiting devices are used to limit the stopping position of the detection workbench.

[0020] In some embodiments of the first aspect of the application, the sensor assembly comprises a sensor mounting seat and a separation extrusion block, the separation extrusion block is embedded in the inner side area of the sensor mounting seat;

[0021] A plurality of gap detection sensors are annularly and uniformly distributed at the bottom of the sensor mounting seat.

[0022] In some embodiments of the first aspect of the application, a pressing plate is arranged at the bottom of each gap detection sensor, the pressing plate is slidably connected with a guide hole on the separation extrusion block through a pressing plate guide shaft, and the pressing plate guide shaft is provided with a compression spring.

[0023] In some embodiments of the first aspect of the application, the detection device further comprises a plurality of linear guide shafts evenly distributed in a ring shape along the central axis of the sensor mounting seat, the linear guide shafts pass through the sensor mounting seat and are fixedly connected to the bottom of the separation extrusion block, and the linear guide shafts are driven by a vertical linear cylinder to drive the separation extrusion block to move up and down.

[0024] The linear guide shafts are sleeved with compression springs on the shaft section between the detection workbench and the sensor mounting seat.

[0025] In some embodiments of the first aspect of the application, the assembly detection device further comprises a product detection sensor arranged above the detection placement table, which is used to detect the position of the clasp to be detected and trigger the action of the clamping mechanism.

[0026] To achieve the above-mentioned purpose, the second aspect of the application provides a clasp assembly detection method of an elastic clasp, the detection method comprising:

[0027] Placing the clasp to be detected on the detection placement table of the detection station, and fixing the upper cover of the clasp by the clamping mechanism;

[0028] Moving the detection device from the waiting station to the detection station by the horizontal moving mechanism;

[0029] Driving the separation extrusion block and the sensor mounting seat to move downward by the vertical linear cylinder, so that the separation extrusion block contacts the base of the clasp and applies a separation force to generate a gap between the upper cover and the base of the clasp;

[0030] Real-time detection of the gap data between the upper cover and the base of the clasp by a plurality of gap detection sensors evenly distributed in a ring shape;

[0031] Comparing the detected gap data with a preset qualified threshold to determine whether the clasp assembly is abnormal.

[0032] In some embodiments of the second aspect of the application, the gap detection sensors are arranged in three, which are used to synchronously collect gap data from different circumferential points of the upper cover of the clasp;

[0033] The preset qualified threshold includes a gap threshold and an inclination threshold, and when the gap data collected by any gap detection sensor is greater than the gap threshold or the inclination calculated by a plurality of gap data exceeds the inclination threshold, it is determined that the clasp assembly is abnormal.

[0034] The advantages of the embodiment of the present application are as follows: first, the manual installation of the male head, the repeated labor of rotating extrusion and naked eye observation are replaced, the labor intensity of the operator is significantly reduced, and the device can be seamlessly integrated into the automatic production line to greatly improve the production efficiency; second, the high-precision contact position sensor (the theoretical accuracy can reach 0.001 mm) is adopted, the small gap change and angle deviation that cannot be detected by the human eye can be captured, the missed detection is effectively avoided, and the detection accuracy is ensured; third, the detection is carried out by the device, the influence of subjective factors such as manual experience, emotion and fatigue is excluded, the detection standard is unified, the result is stable and reliable, and the consistency of product quality is ensured; fourth, the sensor data can be recorded during the detection process, the data of the detection result is realized, and convenience is provided for subsequent quality analysis, statistical process control and product traceability; fifth, the flexible connection design of the sensor mounting seat and the separation extrusion block ensures that the sensor can accurately perceive the real gap change and is not affected by the displacement process of the driving part, and the scheme of the annularly distributed multiple sensors can effectively detect the non-uniform gap or inclination caused by the fact that the snap spring is not completely clamped into the groove. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0036] Figure 1 It is a whole structure schematic view of the assembly detection device of the elastic snap spring type connector described in the present application.

[0037] Figure 2 It is a sectional view of the detection device when the detection device detects the connector.

[0038] Figure 3 It is a partial sectional view of the detection device.

[0039] Figure 4 It is a schematic view of the assembly detection device of the elastic snap spring type connector in the detection position.

[0040] Figure 5 It is a schematic view of the assembly detection device of the elastic snap spring type connector in the detection position.

[0041] Figure 6 It is a flowchart of the assembly detection method of the elastic snap spring type connector. DETAILED DESCRIPTION

[0042] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0043] Figure 1 And Figure 2 The overall structure of the assembly detection device of the elastic spring type connector of the present application is shown in the schematic diagram, and the cross-sectional view of the detection device when detecting the connector is shown in the schematic diagram. As shown in Figure 1 And Figure 2 The detection device is provided with a detection station, and further comprises a horizontal moving mechanism and a detection device fixed on the horizontal moving mechanism.

[0044] The detection station is provided with a detection placement table 100 for placing the connector base 200 to be detected and a clamping mechanism for fixing the connector cover 201 to be detected. In the embodiment of the present application, the two symmetrical edges of the detection placement table 100 are connected with downward extending support plates 101, and the clamping mechanism is arranged below the detection placement table 100 and between the two support plates 101.

[0045] The clamping mechanism is used to fix the connector cover 201 to be detected from below. In the embodiment of the present application, the clamping mechanism is preferably a pneumatic finger, which comprises a finger air cylinder 300 and a plurality of clamping jaws 301 uniformly distributed along the circumferential direction of the finger air cylinder 300. The finger air cylinder 300 drives the clamping jaws 301 of the pneumatic finger to open and close by compressed air, so as to realize clamping or releasing of the connector cover 201. Among them, the clamping jaw 301 is three, so that when clamping, the clamping force can be uniformly applied from the three circumferential directions of the connector cover 201, so that the connector cover 201 is completely fixed and balanced in force.

[0046] In the embodiment of the present application, the finger air cylinder 300 of the pneumatic finger is arranged below the detection placement table 100 and between the two support plates 101; at the same time, the detection placement table 100 is provided with an opening hole 102 corresponding to the position of the clamping jaw 301, which is matched with the clamping jaw 301, and the plurality of clamping jaws 301 of the pneumatic finger pass through the corresponding opening hole 102 and extend to the circumferential area of the connector cover 201, so as to realize rigid clamping of the connector cover 201. The structure cooperation not only utilizes the space advantage of the detection placement table 100, but also makes the installation of the pneumatic finger more compact and the alignment accuracy of the clamping point with the connector higher; at the same time, the opening hole 102 of the detection placement table 100 enables the clamping jaw 301 to directly act on the connector cover 201, avoiding the obstruction of the clamping action by the structure of the detection placement table 100, and ensuring that the clamping mechanism can stably and accurately complete the fixation of the connector cover 201.

[0047] The detection device is further provided with a product detection sensor 400 arranged above the detection placement table 100 and used for detecting the position of the joint to be detected.

[0048] The horizontal moving mechanism is arranged on one side of the detection placement table 100 and used for driving the detection device to reciprocate between a waiting station (as shown in Figure 4 ) and a detection station (as shown in Figure 5 ). In the embodiment of the present application, the horizontal moving mechanism mainly comprises a translation linear cylinder 500, a detection workbench 501 and two linear guide rails 502.

[0049] The translation linear cylinder 500 is used as a horizontal power source, and the piston rod thereof is rigidly connected with the detection workbench 501. The detection workbench 501 is used for bearing the detection device, and the two symmetrical edges of the detection workbench 501 are connected with downward extending side plates 503.

[0050] The two linear guide rails 502 are arranged above the detection placement table 100 and used for guiding the movement of the detection workbench 501. In the embodiment of the present application, in order to facilitate the laying of the linear guide rails 502, the top of the detection placement table 100 is provided with two symmetrical side portions each provided with a guide rail support table 103, and the two linear guide rails 502 are arranged on the guide rail support tables 103, specifically on the top or side portion of the guide rail support tables 103. Meanwhile, the outer sides of the two side plates 503 are provided with slider assemblies 504 matched with the linear guide rails 502. The slider assemblies 504 are embedded in the tracks of the linear guide rails 502. Through the sliding cooperation between the slider assemblies 504 and the linear guide rails 502, the detection workbench 501 can move stably along the linear guide rails 502 under the driving of the translation linear cylinder 500, thereby realizing the switching of the detection device between the waiting station and the detection station.

[0051] In the embodiment of the present application, two detection station limiting devices 505 are arranged on the detection placement table and used for accurately limiting the stop position of the detection workbench 501 when moving to the detection station, so as to ensure the coaxial alignment between the detection device and the joint to be detected.

[0052] The horizontal moving mechanism is further provided with a support frame 506, the bottom of the support frame 506 is fixed on the top of the detection placement table 100, and the cylinder body of the translation linear cylinder 500 is arranged on the top of the support frame 506 to provide stable support for the translation linear cylinder 500 during movement.

[0053] The detection device is arranged on the detection workbench 501 of the horizontal moving mechanism, and is an execution unit for realizing the abnormal detection of the buckle assembly in the device. Figure 3 As shown in the figure, in the embodiment of the present application, the detection device mainly comprises a vertical linear cylinder 600 and a sensor assembly, wherein the sensor assembly has a plurality of gap detection sensors. During testing, the sensor assembly can press the base of the buckle downward under the driving of the vertical linear cylinder, so as to separate the upper cover and the base of the buckle and generate a gap that can be detected by the gap detection sensor.

[0054] In the embodiment of the present application, the sensor assembly comprises a sensor mounting seat 601 and a separation extrusion block 602. In order to adapt to the shape and size of the upper cover 201 and the base 200 of the buckle to be detected, the sensor mounting seat 601 and the separation extrusion block 602 are both annular structures in the embodiment of the present application, and the separation extrusion block 602 is embedded in the inner side area of the sensor mounting seat 601.

[0055] A plurality of gap detection sensors 604 are uniformly arranged on the bottom of the sensor mounting seat 601, and the detection end of the gap detection sensor 604 faces the upper surface of the base 200 of the buckle to be detected, which is used for real-time collection of the gap data generated by the separation of the upper cover 201 and the base 200. In the embodiment of the present application, the gap detection sensor 604 is three and is a contact type position sensor, which can synchronously collect gap data from three different circumferential points of the upper cover 201 of the buckle, eliminate the detection blind area, realize omnibearing and multi-angle monitoring of the gap between the upper cover 201 and the base 200 of the buckle, and greatly improve the precision and reliability of the abnormal detection of the clamp spring 700, so as to ensure the comprehensiveness and accuracy of the detection result.

[0056] The sensor assembly is provided with a pressing plate 607 at the bottom of each gap detection sensor, a plurality of pressing plate guide shafts 608 are fixed on the pressing plate 607, and a first compression spring 609 is arranged on each pressing plate guide shaft 608. At the same time, the separation extrusion block 602 is provided with a plurality of guide holes 610, the upper end of the pressing plate guide shaft 608 passes through the corresponding guide hole 610, and the hole diameter of the upper end of the guide hole 610 is smaller than the outer diameter of the first compression spring 609. In this way, the pressing plate 607 is slidably connected with the guide hole 610 on the separation extrusion block 602 through the pressing plate guide shaft 608, and in the non-detection state, the first compression spring 609 is in a natural state and the pressing plate 607 protrudes from the bottom plane of the separation extrusion block 602; when the separation extrusion block 602 moves downward to a certain position, the first compression spring 609 is clamped at the upper end of the guide hole 610, so as to be compressed. In the embodiment of the present application, two pressing plate guide shafts 608 are arranged on each pressing plate 607, and the number of the pressing plate guide shafts 608 can be set according to actual needs, which is not specially limited in the present application.

[0057] In the embodiment of the present application, the cylinder body of the vertical linear cylinder 600 is fixed on the detection workbench 501, and the piston rod thereof extends downward and is rigidly connected with the top of the separation extrusion block 602 in the sensor assembly, so that the detection device is fixed as a whole on the detection workbench 501. The vertical linear cylinder 600 serves as a vertical power source of the detection device, and can provide stable vertical driving force for driving the downward movement of the separation extrusion block 602 and the sensor mounting seat 601 in the sensor assembly, so as to exert a preset separation force on the upper cover 201 and the base 200 of the buckle, and simulate the actual force scenario of the buckle in use.

[0058] In order to facilitate the vertical movement of the sensor assembly during detection, the detection device of the present application is further provided with a plurality of linear guide shafts 603 which are uniformly distributed along the center axis of the sensor mounting seat 601 in a ring shape, and the linear guide shafts 603 have an outer sleeve. In the embodiment of the present application, three linear guide shafts 603 are provided, and the upper end of each linear guide shaft 603 passes through a preset fitting hole in the detection workbench 501 and forms a sliding fit thereon, and the lower end passes through a through hole in the sensor mounting seat 601 and is fixedly connected with the separation extrusion block 602. During detection, the cylinder body of the vertical linear cylinder 600 on the detection workbench 501 is fixed, and when the separation extrusion block 602 of the sensor assembly moves with the piston rod of the vertical linear cylinder 600, the linear guide shaft 603 can slide up and down on the detection workbench 501 through the fitting hole in the detection workbench 501, thereby providing high-precision guidance for the vertical movement of the separation extrusion block 602 and preventing it from deviating.

[0059] In the embodiment of the present application, a second compression spring 605 is sleeved on the shaft segment of each linear guide shaft 603 between the sensor mounting seat 601 and the detection workbench 501. At the same time, in order to further limit the installation position of the second compression spring 605, a stop block 606 is fixedly arranged on the outer sleeve of each linear guide shaft 603 on the lower side of the detection workbench 501, and the second compression spring 605 is arranged between the sensor mounting seat 601 and the stop block 606, and in the non-detection state, the second compression spring 605 is in a natural state.

[0060] During detection, the vertical linear cylinder 600 pushes the separation extrusion block 602 to move downward, and the linear guide shaft 603 slides downward accordingly. When the lower edge of the sensor mounting seat 601 abuts against the surface of the upper cover 201, the downward movement of the sensor mounting seat 601 stops, while the vertical linear cylinder 600 continues to output driving force, driving the separation extrusion block 602 to further move downward relative to the sensor mounting seat 601. At this time, the first compression spring 609 sleeved on the linear guide shaft 603 is limited by the stop block 606 between the sensor mounting seat 601 and the detection workbench 501, and gradually compressed with the downward movement of the separation extrusion block. The separation extrusion block 602 contacts the base 200 during the downward movement and applies a stable separation force, so that a small gap is generated between the fixed upper cover 201 and the base 200. At the same time, the bottom plate 607 at the bottom of the three gap detection sensors 604 evenly distributed in the annular of the sensor mounting seat 601 is tightly attached to the upper surface of the base 200 through the sliding cooperation of the bottom plate guide shaft 608 and the separation extrusion block 602 under the elastic action of the second compression spring 605, and the gap changes at different circumferential points are captured in real time, and the micro displacement signal is converted into quantifiable data. If the gap data collected by the gap detection sensor 604 exceeds the preset qualified threshold (such as 0.7mm), the sensor will alarm. If the base 200 is inclined, the one with the largest gap among the three annularly distributed sensors will alarm first. After the detection is completed, the vertical linear cylinder 600 withdraws the driving force and retracts, and the elastic potential energy of the first compression spring 609 and the second compression spring 605 in the compressed state is released, pushing the sensor mounting seat 601 and the bottom plate 607 to reset, and at the same time, the separation extrusion block 602 moves upward synchronously with the linear guide shaft 603, until the separation extrusion block 602, the sensor mounting seat 601 and other components of the detection device return to the initial position, preparing for the next detection cycle.

[0061] The above is a specific description of the elastic spring type clasp assembly detection device. The device cooperates with the clamping mechanism, the horizontal moving mechanism and the sensor component detection device integrated therein to build a complete automatic detection system. The system converts the small gap and inclination that is difficult for human to perceive into displacement signals that can be accurately measured by high-precision sensors, not only realizes automatic and efficient determination of the clasp assembly quality, but also ensures the comprehensiveness and high reliability of the detection results through multi-point synchronous measurement, providing a solid technical foundation for improving product consistency and realizing high-quality production.

[0062] Based on the device, the application further discloses a clasp assembly detection method, Figure 6 The flowchart of the abnormality checking method is shown in the figure. Figure 6 The method comprises the following steps:

[0063] Step S1: feeding and positioning.

[0064] The completed elastic clasp 700 is placed on the detection placement table 100, and the bottom surface of the base 200 of the clasp is fully attached to the upper surface of the detection placement table 100, and the clasp is located in the center of the three clamping jaws 301 of the pneumatic fingers on the detection placement table 100. At this time, the clasp is in the initial position of waiting for detection.

[0065] Step S2: Automatic clamping and fixing of the clasp cover 201.

[0066] After the product detection sensor 400 detects that the clasp has been positioned, it sends a signal to the control system. The control system then instructs the clamping mechanism to act.

[0067] Specifically, the finger air cylinder 300 of the pneumatic finger is connected to compressed air, driving the three evenly spaced clamping jaws 301 to contract simultaneously, uniformly applying clamping force from the three circumferential directions of the clasp cover 201, thereby rigidly and stably fixing the clasp cover 201.

[0068] This step establishes a reliable reference plane for the gap detection between the cover 201 and the base 200, ensuring that the cover 201 does not move or deflect when the separation force is applied subsequently.

[0069] Step S3: Horizontal movement and alignment of the detection device.

[0070] After the clasp cover 201 is fixed, the control system starts the horizontal movement mechanism. The translation linear cylinder 500 drives the detection workbench 501 to move smoothly along the linear guide rail 502 laid on the guide rail support table 103 from the waiting station to the detection station.

[0071] When the detection workbench 501 moves to the detection station, it is precisely positioned by the detection station limiting device 505 arranged on the side of the guide rail support table 103, ensuring that the center axis of the separation extrusion block 602 and the sensor mounting seat 601 on the detection device is coaxially aligned with the center axis of the clasp to be detected. At this time, the translation linear cylinder 500 stops moving.

[0072] Step S4: Downward movement and contact of the detection assembly.

[0073] After horizontal movement to the detection station, the control system starts the vertical linear cylinder 600 of the detection device. The piston rod of the cylinder extends downward, driving the separation extrusion block 602 and the sensor mounting seat 601 as a whole to move vertically along the linear guide shaft 603.

[0074] First, when the bottom of the sensor mounting seat 601 touches the upper surface of the clasp cover 201, the sensor mounting seat 601 stops moving downward due to the obstruction of the cover 201.

[0075] Subsequently, the vertical linear cylinder 600 continues to drive the separation extrusion block 602 to continue to move downward until each pressing plate 607 contacts and presses against the upper surface of the clasp base 200. At this time, the detection end of each gap detection sensor 604 adheres to the upper surface of the clasp base 200 through the pressing plate 607 at the bottom thereof; at the same time, the first spring is compressed, and the elastic force of the first spring firmly presses the sensor mounting seat 601 against the clasp upper cover 201.

[0076] Step S5: Apply separation force and synchronously detect gap.

[0077] After the separation extrusion block 602 presses against the base 200, the vertical linear cylinder 600 continues to apply a downward force. The force is transmitted to the clasp base 200 through the separation extrusion block 602, trying to separate the clasp base 200 from the fixed upper cover 201 until the snap spring 700 limits.

[0078] If the internal elastic snap spring 700 is abnormally assembled (such as not fully snapped into the corresponding groove), under the action of the external rated separation force, the gap between the clasp base 200 and the upper cover 201 will exceed the normal threshold or an uneven separation gap will be generated.

[0079] During this process, the multiple (preferably three) gap detection sensors 604 annularly distributed at the bottom of the sensor mounting seat 601 synchronously collect the gap data between the clasp upper cover 201 and the base 200 at different circumferential position points in real time.

[0080] Since the upper cover 201 has been fixed, the displacement detected by the sensor is the gap value at the point. This multi-point synchronous detection scheme not only can detect a uniform separation gap, but also can effectively identify the tilt deviation problem between the upper cover 201 and the base 200 caused by the non-uniform gap due to the incomplete snap-in of the snap spring 700.

[0081] Step S6: Data judgment and result output.

[0082] Each gap detection sensor 604 transmits the collected real-time gap data to the control system. The control system compares the detection data of each sensor with the preset gap threshold and tilt threshold.

[0083] Qualified determination: if the gap values detected by all sensors are less than the gap threshold, and the maximum difference between the gap values detected by the three sensors is less than the tilt threshold, it is determined that the clasp assembly is qualified.

[0084] Unqualified determination: if the gap value detected by any sensor is greater than the gap threshold value, or the inclination of the base 200 exceeds the inclination threshold value, it is determined that the buckle assembly is abnormal, the sensor or the control system triggers the alarm device (such as an audible and visual alarm), and the signal can be transmitted to the subsequent sorting mechanism. In the embodiment of the application, the gap threshold value is set to 0.7mm.

[0085] Step S7: Detecting component reset and buckle release.

[0086] After the detection judgment is completed, the piston rod of the vertical linear cylinder 600 is retracted, and the force applied to the separation extrusion block 602 is removed. At this time, the first compression spring 609 and the second compression spring 605, which are compressed, release the elastic potential energy, respectively push the sensor mounting seat 601 to move upward along the linear guide shaft 603, and the pressing plate 607 to move downward along the pressing plate guide shaft 608, and are reset first.

[0087] Subsequently, the separation extrusion block 602 also moves upward, so that the entire detection device is completely separated from the buckle and returns to the initial height.

[0088] Then, the horizontal moving mechanism acts to drive the detection workbench 501 and the detection device to move together and return to the waiting station from the detection station.

[0089] Finally, the clamping jaws 301 of the pneumatic fingers are opened to release the fixation of the buckle upper cover 201. The feeding and discharging manipulator (or manual) can take away the detected buckle and classify and place it according to the judgment result, so as to complete a complete detection cycle.

[0090] The above is the complete process of the elastic spring buckle assembly detection method of the application. The method constructs an automatic detection method by rigidly fixing the upper cover 201, extruding and separating the base 200, and multi-point synchronous detection. Compared with the prior art, the detection method of the application realizes the following fundamental changes:

[0091] Firstly, the fuzzy judgment relying on human eye observation and individual feeling is abandoned, and accurate comparison is made between the quantitative gap data collected by the high-precision sensor and the preset threshold value, so as to ensure the objectivity and consistency of the judgment.

[0092] Secondly, it is no longer necessary to indirectly feel the gap by screwing in the male head, but the separation state of the upper cover 201 and the base 200 is directly measured in situ and in real time by the detection device, so as to eliminate the error introduced by the intermediate link and make the detection result more direct and reliable.

[0093] Finally, through the annularly distributed multiple sensors, the gap information of multiple points on the circumference of the buckle can be synchronously captured, so that not only the overall separation can be identified, but also the small and non-uniform tilt and offset caused by the incomplete clamping of the clamping spring 700 can be effectively diagnosed, and the detection blind area problem existing in the traditional method is solved.

[0094] The advantages of the embodiment of the present application are as follows: first, the repetitive labor of manual installation of the male head, rotation extrusion and naked eye observation is replaced, the labor intensity of the operator is significantly reduced, the seamless integration into the automatic production line is realized, and the production efficiency is greatly improved; second, the high-precision contact position sensor (the theoretical accuracy can reach 0.001 mm) is adopted, the small gap change and angle offset that cannot be perceived by the human eye can be captured, the missed detection is effectively avoided, and the accuracy of the detection is ensured; third, the detection is carried out by the equipment, the influence of subjective factors such as manual experience, emotion and fatigue is excluded, the detection standard is unified, the result is stable and reliable, and the consistency of the product quality is ensured; fourth, the sensor data can be recorded during the detection process, the data of the detection result is realized, and convenience is provided for subsequent quality analysis, statistical process control and product traceability; fifth, the flexible connection design of the sensor mounting seat and the separation extrusion block ensures that the sensor can accurately perceive the real gap change and is not affected by the displacement process of the driving part, and the scheme of the annularly distributed multiple sensors can effectively detect the non-uniform gap or tilt caused by the incomplete clamping of the clamping spring into the groove.

[0095] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An assembly detection device for a resilient spring type connector, the connector comprising a base and a cover, the base and the cover being clamped by a spring; characterized in that, The assembly detection device comprises: A detection station provided with a detection placement table for placing a to-be-detected connector base and a clamping mechanism for fixing a to-be-detected connector cover; A detection device driven by a horizontal moving mechanism to move above or away from the detection station; the detection device comprises a vertical linear cylinder, the lower end of the vertical linear cylinder is connected with a sensor assembly, the sensor assembly is provided with a plurality of gap detection sensors; the vertical linear cylinder drives the sensor assembly to press the connector base downward or drives the sensor assembly to separate from the connector and return to the initial position; When the sensor assembly presses the connector base downward, the gap detection sensors detect the gap between the base and the cover.

2. The assembly detection device of claim 1, wherein The clamping mechanism is a pneumatic finger, the pneumatic finger comprises a finger cylinder and a plurality of clamping claws uniformly distributed along the circumferential direction of the finger cylinder, and the clamping claws are used for clamping the connector cover.

3. The assembly detection device of claim 1, wherein The horizontal moving mechanism comprises a translation linear cylinder, a detection workbench and a linear guide rail; The translation linear cylinder is connected with the detection workbench; The linear guide rail is laid above the detection placement table; The detection workbench is slidably connected with the linear guide rail through a sliding block assembly; The detection device is arranged on the detection workbench and reciprocally moves along the linear guide rail between the waiting station and the detection station under the driving of the translation linear cylinder.

4. The assembly detection device of claim 3, wherein Two detection station limiting devices are arranged on the detection placement table, and the detection station limiting devices are used for limiting the stopping position of the detection workbench.

5. The assembly detection device of claim 1, wherein The sensor assembly comprises a sensor mounting seat and a separation extrusion block, and the separation extrusion block is embedded in the inner side area of the sensor mounting seat; A plurality of gap detection sensors are annularly and uniformly distributed at the bottom of the sensor mounting seat.

6. The assembly detection device of claim 5, wherein A pressing plate is arranged at the bottom of each gap detection sensor, the pressing plate is slidably connected with a guide hole in the separation extrusion block through a pressing plate guide shaft, and the pressing plate guide shaft is provided with a compression spring.

7. The assembly detection device of claim 5, wherein The detection device further comprises a plurality of linear guide shafts annularly and uniformly distributed along the central axis of the sensor mounting seat, the linear guide shafts pass through the sensor mounting seat and are fixedly connected with the separation extrusion block at the bottom, and the linear guide shafts are driven by the vertical linear cylinder to move the separation extrusion block up and down; A compression spring is arranged on the shaft segment of the linear guide shaft between the detection workbench and the sensor mounting seat.

8. The assembly inspection apparatus of claim 1 to 7, wherein The assembly detection device further comprises a product detection sensor arranged above the detection placement table, which is used for detecting the position of the to-be-detected connector and triggering the action of the clamping mechanism.

9. A method of detecting assembly of an elastic spring clip type connector, characterized by, The detection method comprises: Placing the to-be-detected connector on the detection placement table of the detection station and fixing the connector cover through the clamping mechanism; Moving the detection device from the waiting station to the detection station through the horizontal moving mechanism; Driving the separation extrusion block and the sensor mounting seat to move downward through the vertical linear cylinder, so that the separation extrusion block contacts the connector base and applies a separation force, so that a gap is generated between the connector cover and the base; Real-time detection of the gap data between the connector cover and the base through a plurality of annularly and uniformly distributed gap detection sensors; The gap data detected is compared with a preset qualified threshold to determine whether the assembly of the clasp is abnormal.

10. The method of claim 9, wherein the method further comprises: The gap detection sensors are arranged in three to synchronously collect gap data from different circumferential points of the clasp cover; The preset qualified threshold includes a gap threshold and an inclination threshold. When the gap data collected by any gap detection sensor is greater than the gap threshold or the inclination calculated from the plurality of gap data exceeds the inclination threshold, it is determined that the assembly of the clasp spring is abnormal.

Images