Rotating disc type detection equipment for automobile parts
By using a mounting bracket to drive the rotating assembly to rise and fall and adapt the angle of the detection strip, combined with the design of a pawl and a one-way limiting tooth groove, the problem of detecting the outer wall of inverted conical parts is solved, enabling effective detection of cold beans and improving the accuracy and stability of the detection.
Patent Information
- Application Number
- CN202522604244.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-12-09
AI Technical Summary
Existing automotive parts testing equipment cannot effectively test the outer wall of inverted conical parts, especially it cannot cover the testing requirements for cold-cut parts.
The mounting bracket drives the rotating assembly to move vertically up and down. Combined with the detachable detection strip and the cooperation of the pawl and the one-way limit tooth groove, the height and angle of the inverted conical part can be adjusted and adapted to ensure that the detection strip fits the outer wall of the part. The PLC controller coordinates and controls each action to achieve accurate detection.
It can adapt to the inspection of the outer wall of inverted conical parts, especially the inspection of cold-pressed parts, reduce mechanical friction errors, improve the accuracy and stability of the inspection, and avoid damage to the inspection device by the cold-pressed parts.
Smart Images
Figure CN223841179U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of parts inspection, specifically to a rotary testing device for automotive parts. Background Technology
[0002] Automotive parts come in a variety of styles, with round parts being a common type. During the production and processing process, it is necessary to check whether these round parts are perfectly round in order to ensure the quality of the parts.
[0003] The existing automotive parts inspection device includes a worktable. In the central area of the top surface of the worktable, there is a rotating assembly for carrying parts. The core component of this assembly is a turntable, on the upper side of which is fitted with a magnetic disk to hold and fix the parts to be inspected. A ring-shaped limiting ring is integrally formed at the bottom of the turntable. Correspondingly, a groove matching the limiting ring is formed on the top surface of the worktable. Several ball bearings are evenly arranged inside the groove. After the limiting ring is embedded in the groove, it rotates flexibly through the ball bearings, thus allowing the turntable to rotate stably. To drive the rotating assembly, a drive assembly is installed at the bottom of the worktable corresponding to the position of the turntable. The drive assembly is based on a mounting bracket, which is fixed in the middle of the bottom of the worktable. A first motor is mounted on its lower side, and the output end of the first motor is connected to a connecting shaft. The connecting shaft passes upward through the worktable and is finally fixedly connected to the turntable. The connection point between the connecting shaft and the worktable uses a rotational fit design to ensure stable power transmission to the turntable. The right side of the top surface of the worktable integrates two main functions: a moving inspection component and an alarm light. The component has a sliding groove on the right side of the top surface of the workbench. A screw is horizontally mounted inside the groove. A second motor is installed on the outer right wall of the workbench corresponding to the end of the screw, serving as the power source for the screw's rotation. A threaded sleeve is fitted on the outer wall of the screw, forming a threaded transmission engagement with the screw and maintaining a sliding connection with the inner wall of the groove. This allows the threaded sleeve to move laterally along the groove when the second motor drives the screw to rotate. A sensor plate is fixed to the upper side of the threaded sleeve. Guide posts are fitted at the four corners of the sensor plate, with a sliding engagement between the guide posts and the sensor plate. The ends of the guide posts are fixedly connected to a detection plate, providing movement guidance for the detection plate. A buffer spring is installed in the middle right side of the sensor plate, with its left end connected to the detection plate. A touch rod is fixed in the middle right side of the detection plate. When the detection plate contacts a part and is compressed, it moves along the guide posts towards the sensor plate, triggering the sensor plate's action via the touch rod. A circuit connection is established between the sensor plate and an alarm light. Once the sensor plate is triggered, it controls the alarm light to activate.
[0004] In sand casting, die casting, and other processes, due to low pouring temperature of molten metal, insufficient preheating of the mold, or localized premature solidification caused by splashing and eddies during flow, small, independent particles that are not fully fused with the main metal will form on the outer wall of the casting. This phenomenon is called "cold bead." Cold bead can damage the surface smoothness of the casting and reduce its strength and toughness. However, existing technologies have obvious adaptation defects and cannot meet the inspection requirements of inverted conical parts. The core design of existing devices revolves around the regularity inspection of the outer circumference of circular parts, which is achieved by driving the turntable to rotate through the drive component. However, existing technologies cannot cover the inspection requirements of the outer wall of inverted conical parts. Based on this problem, the following improvements are proposed. Utility Model Content
[0005] The present invention aims to provide a rotary testing device for automotive parts to solve the problem that the outer wall of inverted conical parts cannot be tested in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rotary testing device for automotive parts, comprising a worktable with a rotating hole, a mounting bracket vertically slidably disposed below the worktable and directly opposite the rotating hole, a rotating component disposed on the mounting bracket, a driving component for driving the mounting bracket mounted on the worktable, the mounting bracket for driving the rotating component to move vertically along the rotating hole, and a testing strip detachably connected to the side of the testing plate near the rotating hole; the testing strip comprises a strip and connecting rods disposed at both ends of the strip, the connecting rods being L-shaped and connected to the testing plate, the connecting rods comprising a first connecting rod hinged to the strip and a second connecting rod slidably disposed on the strip; the strip has a groove, a slider slidably disposed within the groove, a positioning spring connecting the slider and the groove, and the second connecting rod hinged to the slider.
[0007] The beneficial effects of this solution are as follows: Existing technologies can detect the circumferential error of the outer wall of columnar parts at any height by simply selecting a wider detection plate. However, this method is not applicable to inverted conical parts. In this solution, the mounting frame drives the rotating assembly to rise and fall vertically, allowing the height to be adjusted synchronously during the rotation detection of the inverted conical part. As the detection plate contacts the inverted conical part, the angle of the detection plate rotates to match the taper of the outer wall of the inverted conical part and fits against the outer wall of the inverted conical part. This solution can cover the detection needs of outer walls at different heights, overcoming the limitation of existing technologies that can only detect columnar parts. The detachable detection strip is adapted to the inverted conical part. The first connecting rod cooperates with the sliding second connecting rod, and the slider and positioning spring provide elastic clamping, ensuring a stable connection between the detection strip and the detection plate while facilitating the rotation angle to adapt to the inverted conical part.
[0008] Preferably, as an improvement, the top end of the connecting rod is provided with a one-way limiting tooth groove, the top end of the connecting rod is horizontally slidably connected to a sliding frame, the bottom end of the sliding frame is hinged to a pawl, the strip is hinged to the end of the first connecting rod, the slider is hinged to the end of the second connecting rod, and the sliding frame on the first connecting rod and the sliding frame on the second connecting rod are respectively hinged to the strip and the slider with connecting rods.
[0009] The beneficial effects are as follows: the unidirectional limiting tooth groove of the connecting rod cooperates with the pawl of the sliding frame. The taper of the inverted conical parts to be tested in this solution is divided into 3°, 4°, and 5°. For the pawl displacement required for these three taper parts, the tooth pitch of the unidirectional fiber tooth groove adopts a 45° sawtooth shape, the tooth tip width is 0.3mm, the tooth root radius is R0.2mm, and the angle between the tooth surface and the bottom surface of the tooth groove is 45°. The side bearing the locking force is perpendicular to the length direction of the tooth groove, and the non-working surface is inclined at an angle of 30°. The wedge-shaped structure of the pawl achieves unidirectional self-locking, and the tooth surface roughness Ra≤1.6μm ensures smooth pawl operation. Engagement and disengagement; the tooth pitch is uniformly 1mm, adapting to the minimum displacement of 0.8mm triggered by the cold bean and the fine adjustment accuracy of the second motor at 0.1mm level; the total length of the unidirectional limiting tooth groove is 50mm, arranged along the length direction of the first connecting rod 4211 and the second connecting rod 4212, covering the maximum adjustment stroke of the sliding frame 5 of 40mm, meeting the angle adjustment requirements corresponding to the 3°-5° taper; the tooth groove depth is 2mm, and the engagement depth with the pawl is 1.5mm, ensuring that the detection plate does not move axially in the locked state, and the thrust generated by the cold bean can push the detection plate 41 to drive the pawl to disengage from the tooth groove.
[0010] The pawl and the one-way limiting tooth groove work together to lock the rotation angle of the strip and the slider, allowing the strip to follow the tilt angle of the outer wall surface of the inverted conical part and fit in place. This ensures continuous contact with the part surface during the inspection process. When there are cold spots on the side wall of the inverted conical part, and these cold spots touch the middle of the strip during the inspection process, the cold spots will squeeze the strip, causing the strip to drive the connecting rod and push the inspection plate to move, thereby detecting the cold spots on the surface of the inverted conical part. The strip and the slider are hinged to the sliding frame via a connecting rod. When the cold spots on the surface of the part touch the upper part of the strip, the strip is impacted, causing the tilt angle to change. After the strip rotates, it drives the sliding frame to slide on the connecting rod via the connecting rod. The pawl moves away from the strip in the one-way limiting tooth groove and locks its position, thus preventing the sliding frame from resetting under the weight of the strip. This prevents the cold spots that are in contact with the upper part of the strip from continuing to collide with the strip, thus protecting the strip.
[0011] Furthermore, when the cold bean touches the lower part of the strip, the strip tends to rotate downwards. At this time, due to the locking of the pawl and the one-way limiting tooth groove, the strip can be prevented from rotating. Therefore, when the cold bean collides with the lower part of the strip, the strip will drive the connecting rod and the detection plate to slide away from the strip together, which will not affect the progress of the entire experiment. Thus, this design can meet the detection requirements when the cold bean touches the upper, middle and lower parts of the strip respectively.
[0012] Preferably, as an improvement, the sliding frame is vertically slidably provided with a locking rod, the locking rod is rotatably provided with a rotating shaft, a pawl is fixed to the rotating shaft, a torsion spring is provided between the rotating shaft and the locking rod, and the locking rod is threadedly connected with a push rod, the end of the push rod abutting against the outer wall of the sliding frame to fix the height of the locking rod.
[0013] The beneficial effects are as follows: After all the inverted conical parts of the same batch with the same taper have been inspected, the height of the locking rod can be increased and the sliding frame can be pushed to the initial position. Then the locking rod can be lowered to make the pawl fall into the initial position of the one-way limit tooth groove. Finally, the position of the pawl is fixed by pressing the top rod against the outer wall of the sliding frame, which facilitates the inspection of the next batch of inverted conical parts. In addition, when the cold bead on the outer wall of the part touches the upper part of the strip, the system alarms and removes the unqualified part. Then the pawl is returned to the initial position in the same way.
[0014] Preferably, as an improvement, the mounting bracket includes a drive plate, a boss fixed to the top of the drive plate, and a rotating component disposed on the boss. The boss is cylindrical and its diameter is smaller than the diameter of the rotating hole.
[0015] The beneficial effects are as follows: the diameter of the boss is smaller than the diameter of the rotating hole, which can avoid interference with the inner wall of the rotating hole during lifting and lowering, ensuring that the lifting and lowering process of the mounting frame driving the rotating component is smooth and stable, reducing the detection error caused by mechanical friction. The cylindrical boss provides a stable installation reference for the rotating component. The integrated structure of the drive plate and the boss enhances the load-bearing capacity and structural strength of the mounting frame, and improves the overall stability of the device.
[0016] Preferably, as an improvement, the rotating assembly includes a turntable and a limiting ring disposed at the bottom of the turntable. A rotating groove is formed on the top surface of the boss corresponding to the limiting ring. Balls are evenly disposed in the rotating groove. The limiting ring is rotatably connected to the rotating groove. A disk is disposed on the upper side of the turntable. A first motor is mounted on the bottom end of the drive plate and is used to drive the turntable to rotate.
[0017] Preferably, as an improvement, the detection plate has several longitudinally symmetrical connecting grooves at both ends near the rotating hole for inserting connecting rods. The connecting grooves and connecting rods are both rectangular in cross-section, and the connecting rods are fitted with the connecting grooves with a clearance. A positioning spring is used to push the second connecting rod against the connecting groove.
[0018] Preferably, as an improvement, the driving component is a cylinder.
[0019] Preferably, as an improvement, the top surface of the worktable is provided with a horizontal slide groove, a screw is provided in the slide groove, a second motor is installed on the side of the worktable, the output shaft of the second motor is connected to the screw, the bottom end of the detection plate is provided with a threaded sleeve adapted to the screw, the second motor is used to drive the detection plate to move horizontally along the slide groove; the worktable is provided with a PLC controller, and the PLC controller is electrically connected to the first motor, the second motor and the cylinder. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0021] Figure 2 The embodiments of this utility model differ from those of the present utility model. Figure 1 A schematic diagram of the overall structure of the viewpoint;
[0022] Figure 3 for Figure 1 A partial structural diagram of the connection between the detection plate and the detection strip at point A in the middle;
[0023] Figure 4 This is a partial structural diagram of the connection between the strip and the slider in an embodiment of the present invention;
[0024] Figure 5 This is a partial structural diagram of the hinged connection between the first connecting rod and the strip in an embodiment of the present utility model;
[0025] Figure 6 This is a partial cross-sectional structural diagram of the hinged connection between the first connecting rod and the strip plate in an embodiment of the present utility model;
[0026] Figure 7 This is a partial structural diagram of the hinged connection between the second connecting rod and the slider in an embodiment of this utility model;
[0027] Figure 8 for Figure 7 A partial structural diagram of the unidirectional limiting tooth groove and sliding frame at point B;
[0028] Figure 9 This is a schematic diagram of a random inverted cone-shaped part that is not up to standard and is to be tested according to an embodiment of this utility model. Detailed Implementation
[0029] The following detailed description illustrates the specific implementation method:
[0030] The reference numerals in the accompanying drawings include: worktable 1, rotating hole 11, cylinder 12, second motor 13, mounting bracket 2, drive plate 21, boss 22, first motor 23, rotating assembly 3, sensing plate 4, detection plate 41, connecting groove 411, detection strip 42, strip plate 421, first connecting rod 4211, second connecting rod 4212, slide groove 4213, slider 4214, positioning spring 4215, one-way limiting tooth groove 422, sliding frame 5, locking rod 51, rotating shaft 511, pawl 512, push rod 513, connecting rod 52.
[0031] Example
[0032] The basic implementation examples are as follows: Figures 1-9 As shown, Figures 1-2 The rotary testing equipment for automotive parts shown includes a worktable 1, a mounting frame 2, a rotating assembly 3, a testing plate 41, and a driving component. The worktable 1 is the basic load-bearing structure of the device, and a through rotating hole 11 is provided on the worktable 1. The mounting frame 2 includes a driving plate 21 and a boss 22 fixed to the top of the driving plate 21. The boss 22 is cylindrical and its diameter is smaller than the diameter of the rotating hole 11. A guide rod is vertically fixed below the worktable 1. The driving plate 21 has a guide hole for the guide rod to pass through. A positioning plate is fixed to the bottom end of the guide rod to prevent the driving plate 21 from slipping off the guide rod. A cylinder 12 is mounted on the positioning plate, and the cylinder body of the cylinder 12 is fixedly mounted on the positioning plate. The piston rod is connected to the drive plate 21. The mounting bracket 2 is vertically slidably set below the worktable 1 through the cylinder 12 and the guide rod, and is located directly below the rotating hole 11, and can move up and down in the vertical direction. The top of the boss 22 is provided with a rotating assembly 3, which includes a turntable and a limiting ring set at the bottom of the turntable. The top surface of the boss 22 is provided with a rotating groove corresponding to the limiting ring. Balls are evenly arranged in the rotating groove. The limiting ring is rotatably connected to the rotating groove. A disk is provided on the upper side of the turntable, which can fix the parts by magnetic adsorption. The first motor 23 is installed at the bottom of the drive plate 21. The output shaft of the first motor passes through the drive plate and the boss and is connected to the turntable through a coupling, and is used to drive the turntable to rotate.
[0033] like Figures 3-4As shown, a detection strip 42 is detachably connected to the side of the detection plate 41 near the rotating hole 11; the detection strip 42 includes a strip 421 and connecting rods disposed at both ends of the strip 421. The length of the connecting rods is greater than the maximum radius of the inverted conical part, and the distance between the strip 421 and the detection plate 41 is also greater than the maximum radius of the inverted conical part; the connecting rods are L-shaped and include a first connecting rod 4211 hinged to the strip 421 and a second connecting rod 4212 slidably disposed on the strip 421; a groove 4213 is provided on the strip 421. A slider 4214 is slidably provided inside the slide 13. A positioning spring 4215 is connected between the slider 4214 and the slide groove 4213. The slider 4214 is hinged to the second connecting rod 4212. Several connecting grooves 411 are longitudinally symmetrically opened at both ends of the detection plate 41 near the rotating hole. The connecting rod can be inserted into the connecting groove 411. The cross-section of the connecting groove 411 and the connecting rod are both rectangular, and the two are clearance fit. The positioning spring 4215 is used to push the second connecting rod 4212 against the connecting groove 411 to achieve a stable connection between the detection strip 42 and the detection plate 41.
[0034] like Figures 5-8 As shown, both the top ends of the first and second connecting rods are provided with one-way limiting toothed grooves 422. A sliding frame 5 is horizontally slidably connected to the top end of the connecting rod. The legs of the sliding frame 5 are embedded in the connecting rod. The connecting rod has guide grooves for the legs to be embedded in, and a guide rod is installed in the guide grooves. The guide rod passes through the legs of the sliding frame 5. Vertical sliding grooves are provided on both sides of the sliding frame 5. A locking rod 51 is vertically slidably installed in the sliding grooves. A rotating shaft 511 is rotatably mounted on the locking rod 51. A pawl 512 is fixed to the rotating shaft 511 at the middle of the sliding frame 5. A torsion spring is installed between the rotating shaft 511 and the locking rod 51. The end protrudes from the sliding frame 5, and a top rod 513 is threadedly connected to the end of the locking rod 51. The end of the top rod 513 abuts against the outer wall of the sliding frame 5 to fix the height of the locking rod 51. A fixed shaft is provided at the end of the connecting rod. For the first connecting rod 4211, the strip 421 is rotatably connected to the fixed shaft of the first connecting rod 4211, and a connecting rod 52 is hinged between the strip 421 and the sliding frame 5. For the second connecting rod 4212, the slider 4214 is rotatably connected to the fixed shaft of the second connecting rod 4212, and a connecting rod 52 is also hinged between the slider 4214 and the sliding frame 5.
[0035] like Figures 1-2As shown, the top surface of the workbench 1 is provided with a horizontal slide groove 4213, and a screw is installed in the slide groove 4213. A second motor 13 is installed on the side of the workbench 1, and the output shaft of the second motor 13 is connected to the screw. The bottom end of the detection plate 41 is provided with a threaded sleeve that matches the screw. The second motor 13 is used to drive the detection plate 41 to move horizontally along the slide groove 4213. The workbench 1 is equipped with a PLC controller, which is electrically connected to the first motor 23, the second motor 13, and the cylinder 12. For inverted conical parts, it is necessary to synchronously coordinate the three actions of part rotation, lifting, and detection plate 41 movement. The LC controller's preset program allows for precise setting of the linkage logic among the three components. This collaborative control avoids delays or misalignments in actions during manual operation, making the detection more consistent and accurate. For inverted conical parts with different tapers, multiple detection programs are preset in the PLC. For example, for a low-speed lifting program for small-tapered parts, the operator only needs to select the corresponding program via the touchscreen on the workbench 1 surface. The PLC can then automatically control the first motor 23 to start rotating, the cylinder 12 to lift and lower along the preset trajectory, and the second motor 13 to drive the detection plate 41 to complete the positioning, without the need for manual adjustment of the parameters of each component. The PLC controller's program area has preset adaptive control logic. For every 5mm vertical lifting stroke completed by the cylinder 12, the first motor 23 maintains a constant speed of 50r / min, and the second motor 13 automatically makes lateral fine adjustments according to the taper of the part: 2.0mm for a taper of 3°, 1.7mm for a taper of 4°, and 1.6mm for a taper of 5°. This parameter coordination ensures that the detection strip 42 always fits the circumference of the part's current height cross-section.
[0036] The PLC controller has three sets of control interfaces at its output. The first set of interfaces is connected to the driver of the first motor 23 via a pulse signal line to transmit speed control signals and direction signals. The pulse frequency corresponds to the speed, and switching between high and low levels enables forward and reverse rotation. The second set of interfaces is connected to the driver of the second motor 13 via another set of pulse signal lines to transmit position control signals and direction signals for the movement of the detection board 41. The number of pulses corresponds to the movement distance, controlling the detection board 41 to move closer to or away from the rotating hole 11. The third set of interfaces is connected to the solenoid valve of the cylinder 12 via a relay module to transmit switching signals. A high level triggers the solenoid valve to energize, controlling the extension rod of the cylinder 12 to extend; a low level triggers the solenoid valve to de-energize, controlling the extension rod to retract. At the same time, the input of the PLC controller is connected to the sensing component on the detection board 41. When an irregular protrusion of a part pushes the detection board 41, the sensing component sends a switching signal to the PLC controller. Upon receiving the signal, the PLC controller immediately triggers the output signal to activate the alarm light and can selectively pause the actions of the first motor 23, the second motor 13, and the cylinder 12, achieving real-time response during the detection process.
[0037] The specific implementation process is as follows:
[0038] Pressing the second connecting rod 4212 compresses the positioning spring 4215, inserting the first connecting rod 4211 and the second connecting rod 4212 into the connecting groove 411 of the detection plate 41 respectively. After releasing the second connecting rod 4212, the positioning spring 4215 resets and pushes the second connecting rod 4212 against the inner wall of the connecting groove 411, thus completing the fixation of the detection strip 42 and the detection plate 41.
[0039] The parts are placed on the turntable's disk, which is magnetically attracted to prevent it from shifting during rotation or lifting. The first motor 23 is started, and its output shaft drives the turntable to rotate through a coupling. The limit ring rolls with the turntable in the groove through the ball bearings, achieving stable rotation of the parts. The rotation speed is adjusted by the PLC controller.When the outer wall needs to be inspected during the rotation of the part, the PLC controller synchronously controls the first motor 23 and the cylinder 12. The first motor 23 keeps running, the part continues to rotate, and the telescopic rod of the cylinder 12 drives the mounting bracket 2 to move vertically along the guide rod. The boss 22 moves up and down with the mounting bracket 2 through the rotating hole 11, thereby driving the turntable and the adsorbed part to move up and down synchronously. At the same time, the second motor 13 is started, and its output shaft drives the screw to rotate forward or reverse. The threaded sleeve slides horizontally along the screw in the slide groove 4213, thereby driving the detection plate 41 and the detection strip 42 to approach the rotating hole 11 until the strip 421 makes slight contact with the surface of the part. After contact, the pawl 512 and the one-way limiting tooth groove 422 cooperate to lock the rotation angle of the strip 421 and the slider 4214, so that the strip Plate 421 can follow the tilt angle of the outer wall surface of the inverted conical part and fit against it, ensuring continuous contact with the part surface during the detection process. When there are cold spots on the side wall of the inverted conical part, and the cold spots touch the middle of plate 421 during the detection process, the cold spots will squeeze plate 421, causing plate 421 to drive the connecting rod to push the detection plate 41 to move, triggering the sensing component on the detection plate 41. The sensing component includes a touch rod fixed to the detection plate and a limit switch electrically connected to the PLC controller. The touch rod is vertically fixed to the middle of the right side of the detection plate, and the limit switch is correspondingly fixed to the left side of the sensing plate, with a distance of 1-2mm between them, ensuring that the limit switch can be triggered when the detection plate moves slightly, that is, it is determined that there are cold spots on the surface of the part. The PLC controller immediately outputs a control signal: on the one hand, the touch rod is fixed to the middle of the right side of the detection plate, and the limit switch is correspondingly fixed to the left side of the sensing plate. The distance between the two is 1-2mm, which ensures that the limit switch can be triggered when the detection plate moves slightly, that is, it is determined that there are cold spots on the surface of the part. The PLC controller immediately outputs a control signal: on the one hand, the touch rod is fixed to the middle of the right side of the detection plate, and the limit switch is fixed to the middle of the right side of the detection plate, with a distance of 1-2mm between them, so that the limit switch can be triggered when the detection plate moves slightly, that is, it is determined that there are cold spots on the surface of the part. The PLC controller immediately outputs a control signal: on the other hand, the touch rod is fixed to the middle of the right side of the detection plate, and the limit switch is fixed to the middle of the right side of the detection plate, with a distance of 1-2mm between them, so that the limit switch can be triggered when the detection plate moves slightly, that is, it is determined that there are cold spots on the The alarm light on workbench 1 illuminates to alert the operator. Simultaneously, the operation of the first motor 23, the second motor 13, and the lifting action of cylinder 12 are paused to prevent continued detection of abnormal parts from causing misjudgment or component damage. When the cold bean on the surface of the part touches the upper part of the strip 421, the strip 421 is impacted, causing a change in its tilt angle. After the strip 421 rotates, it drives the sliding frame 5 to slide on the connecting rod via the connecting rod 52. The pawl 512 moves away from the strip 421 within the one-way limiting tooth groove 422 and locks its position. Since the sliding frame and the detection plate are indirectly connected, the movement of the sliding frame causes a slight displacement of the detection plate, which in turn causes the touch rod on the detection plate to approach and trigger the limit switch. The limit switch transmits a switching signal. The input interface to the PLC; Since the one-way limiting tooth groove 422 can meet the displacement caused by the maximum cold bean contact of 3°, 4°, and 5°, it prevents the sliding frame 5 from resetting under the gravity of the strip plate 421. It can prevent the cold bean in contact with the upper part of the strip plate 421 from continuing to collide with the strip plate 421, thus protecting the strip plate 421. When the cold bean contacts the lower part of the strip plate 421, the strip plate 421 has a tendency to rotate downward. At this time, due to the locking of the pawl 512 and the one-way limiting tooth groove 422, the strip plate 421 can be prevented from rotating. Therefore, when the cold bean collides with the lower part of the strip plate 421, the strip plate 421 will also drive the connecting rod and the detection plate 41 to slide together in the direction away from the strip plate 421, thereby detecting the cold bean on the outer wall of the inverted conical part.
[0040] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A rotary testing device for automotive parts, comprising a worktable, characterized in that: The workbench has a rotating hole, the mounting bracket is vertically slidably set below the workbench and directly opposite the rotating hole, the rotating component is set on the mounting bracket, the workbench is equipped with a drive component for driving the mounting bracket, the mounting bracket is used to drive the rotating component to move vertically along the rotating hole, and the side of the detection plate near the rotating hole is detachably connected to the detection strip. The detection strip includes a strip plate and connecting rods disposed at both ends of the strip plate. The connecting rods are L-shaped and connected to the detection plate. The connecting rods include a first connecting rod hinged to the strip plate and a second connecting rod slidably disposed on the strip plate. The strip plate has a groove, and a slider is slidably disposed in the groove. A positioning spring is connected between the slider and the groove. The second connecting rod is hinged to the slider.
2. The detection device according to claim 1, characterized in that: The top of the connecting rod is provided with a one-way limiting tooth groove, and a sliding frame is horizontally slidably connected to the top of the connecting rod. A pawl is hinged to the bottom of the sliding frame. The strip is hinged to the end of the first connecting rod, and the slider is hinged to the end of the second connecting rod. The sliding frame on the first connecting rod and the sliding frame on the second connecting rod are respectively hinged to the strip and the slider with connecting rods.
3. The testing equipment according to claim 2, characterized in that: The sliding frame is vertically slidably equipped with a locking rod, the locking rod is rotatably equipped with a rotating shaft, a pawl is fixed to the rotating shaft, a torsion spring is provided between the rotating shaft and the locking rod, and the locking rod is threadedly connected to a push rod, the end of the push rod abutting against the outer wall of the sliding frame to fix the height of the locking rod.
4. The detection device according to claim 1, characterized in that: The mounting bracket includes a drive plate, a boss fixed to the top of the drive plate, and a rotating component disposed on the boss. The boss is cylindrical and its diameter is smaller than the diameter of the rotating hole.
5. The detection device according to claim 4, characterized in that: The rotating assembly includes a turntable and a limiting ring set at the bottom of the turntable. A rotating groove is opened on the top surface of the boss corresponding to the limiting ring. Balls are evenly arranged in the rotating groove. The limiting ring is rotatably connected to the rotating groove. A disk is set on the upper side of the turntable. A first motor is installed at the bottom of the drive plate and is used to drive the turntable to rotate.
6. The detection device according to claim 1, characterized in that: The detection plate has several longitudinally symmetrical connecting slots at both ends near the rotating hole for inserting connecting rods. Both the connecting slots and the connecting rods have rectangular cross sections. The connecting rods are fitted with the connecting slots with a clearance. A positioning spring is used to push the second connecting rod against the connecting slot.
7. The detection device according to claim 1, characterized in that: The driving component is a cylinder.
8. The detection device according to claim 7, characterized in that: The top surface of the workbench is provided with a horizontal slide groove, and a screw is installed in the slide groove. A second motor is installed on the side of the workbench, and the output shaft of the second motor is connected to the screw. The bottom end of the detection plate is provided with a threaded sleeve that matches the screw. The second motor is used to drive the detection plate to move horizontally along the slide groove. The workbench is equipped with a PLC controller, which is electrically connected to the first motor, the second motor, and the cylinder.