A universal automobile parts size and appearance detection device and detection method

Abstract

The present invention discloses a device and method for detecting the size and appearance of a universal automobile part. The device part includes a limit guiding module, a detection module, a transfer module and a diversion output module. The limit guiding module includes a push limit mechanism and a guide mechanism. The push limit mechanism is used to push the workpiece to be measured to the material taking station. The guide mechanism is used to limit the orientation of the two sides of the workpiece to be measured. The present invention uses the limit guiding module to guide the tool to be measured before detection, so that the width dimension direction of the tool to be measured is parallel to the detection end in the dimension detection mechanism. At the same time, under the transportation of the transfer module, the workpiece to be measured is transferred to the detection module and the diversion output module in turn, and is detected by the detection module. Under the premise of realizing the fully automatic quality inspection of the workpiece to be measured, the correction step before the quality inspection saves the time required for detection, improves the quality inspection efficiency, and reduces the false detection rate caused by the placement deviation of the workpiece to be measured.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile component size detection, and in particular relates to a device and method for detecting the size and appearance of a universal automobile component. Background Art

[0002] In the existing technology, automotive parts must meet dimensional accuracy requirements when assembled with mating parts, but their production process requires a series of steps such as precision stamping, heat treatment, and deburring. In addition, such products are a product family with the risk of mixing similar products, and heat treatment can cause deformation, affecting their dimensional accuracy. Therefore, the products need to be inspected for defects and mixed materials before packaging.

[0003] like Figure 1 As shown in the figure, the tested product is divided into a width dimension detection area and a functional area (i.e., the tooth part). The existing detection is divided into two steps. First, the width dimension of the product is detected by manually operating the through-no-gauge inspection fixture, and then the appearance is visually inspected. The operation method is to manually place the product flat into the card slot of the inspection fixture and push it inward. The qualified product is in the state of sliding in the through-gauge groove of the inspection fixture and being blocked at the entrance of the no-gauge groove to realize product dimension detection. This detection method causes the outer edge of the product to contact and rub with the inner side of the inspection fixture during the inspection process, resulting in wear. At the same time, after a certain period of product verification, the inspection edge of the inspection fixture will produce dimensional errors due to long-term friction, resulting in invalid product detection. At the same time, the defects of the functional area of ​​the product are detected by human naked eye observation. Because the functional area of ​​the product is in the shape of small teeth, similar to the shape of similar products, only the steel stamp or convexity is different, manual inspection will cause visual fatigue, resulting in the outflow of defective products, and the efficiency is low, so there is a lot of room for improvement in the current inspection process. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, the present invention provides a device and method for detecting the size and appearance of a universal automobile part, so as to solve the technical problems of low efficiency and large error in manual detection of automobile parts.

[0005] To achieve the above purpose, the specific technical solutions of the present invention are as follows:

[0006] In a first aspect, a device for detecting the size and appearance of a universal automobile component is provided, comprising:

[0007] A feeding module, which is used to transport the workpieces to be tested one by one;

[0008] The position limiting and guiding module includes a push position limiting mechanism and a guiding mechanism. The push position limiting mechanism is used to receive the workpiece to be measured from the feeding module and push the workpiece to the material taking station. The guiding mechanism is used to limit the orientation of the two sides of the workpiece to be measured.

[0009] The detection module includes a detection platform, a size detection mechanism and an appearance detection mechanism. The size detection mechanism is used to detect the width of the measured component, and the appearance detection mechanism is used to detect the surface and teeth of the measured workpiece.

[0010] The transfer module is used to transfer the workpiece to be measured at the material picking station to the detection platform, and the spacing direction of the side edges of the transferred workpiece to be measured is parallel to the size detection end in the size detection mechanism.

[0011] The shunt output module is used to shunt and output qualified workpieces and unqualified workpieces detected by the size detection mechanism and the appearance detection mechanism.

[0012] Furthermore, the size detection mechanism includes a displacement sensor, a moving block and a displacement drive assembly. The two moving blocks are symmetrically arranged on both sides of the detection platform and are both slidably connected to the mounting base. The two moving blocks can move away from or close to one side of the detection platform under the drive of the displacement drive assembly; the displacement sensor is fixed on one of the moving blocks, and the detection end extends between the two moving blocks.

[0013] Furthermore, the displacement drive assembly includes a spring and a displacement drive cylinder. The two mounting brackets are respectively fixed on both sides of the mounting base. The two ends of the two springs respectively abut against the mounting brackets and the corresponding moving blocks. The displacement drive cylinder is fixed in the middle of the mounting base, and the two ends are respectively facing the two moving blocks, for driving the two moving blocks to move in opposite directions.

[0014] Furthermore, the appearance inspection mechanism includes a surface inspection camera, a tooth front camera and an information processing module. The surface inspection camera and the tooth front camera are respectively installed directly above and directly in front of the inspection base, and are used to take photos of the surface and tooth portion of the workpiece being inspected. The information processing module is used to receive and compare the photos taken by the surface inspection camera and the tooth front camera with the photos of the standard parts.

[0015] Furthermore, the pushing and limiting mechanism comprises a limiting base, a material pushing cylinder and a limiting cylinder. The limiting base is provided with a guide groove. The material taking station is arranged on the guide groove; the material pushing cylinder and the limiting cylinder are respectively arranged at both ends of the guide groove.

[0016] The guiding mechanism comprises a guiding member and a guiding cylinder. The guiding member is arranged at one side of the material taking station. The limiting guiding member is driven by the guiding cylinder to extend or retract in a direction perpendicular to the length direction of the guiding groove.

[0017] Furthermore, the feeding module includes a vibration plate, a silo and a guide rail, wherein the vibration plate is arranged on the storage silo, and the input end extends into the bottom of the silo, and the output end is connected to the feed port of the guide rail, and can output the workpieces to be tested in the silo one by one to the guide rail under the action of vibration. The guide rail is provided with a material drop chute and a material blocking piece in sequence.

[0018] Furthermore, the device also includes a horizontal jacking assembly, which includes a jacking cylinder and a jacking rod. A clearance groove matched with the jacking rod is provided on the material taking station. The top of the jacking rod extends into the clearance groove and can be pushed out upward or fall back downward under the drive of the jacking cylinder.

[0019] Furthermore, the diversion output module includes a material drop channel, a stopper and a rotating cylinder. The material drop channel is divided into a material drop port and a discharge port at the top. Two diversion channels are provided at the discharge port, namely a first branch channel and a second branch channel. The stopper is rotatably connected to the diversion ports of the first branch channel and the second branch channel, and rotates under the drive of the rotating cylinder.

[0020] Furthermore, the transfer module adopts an industrial robot.

[0021] In a second aspect, a method for detecting the size and appearance of a universal automobile part adopts the detection device as described in the first aspect, and the specific steps are as follows:

[0022] Step 1: The feeding module transports the workpieces to be tested one by one to the push limit mechanism in the specified direction.

[0023] Step 2: The push-limit mechanism receives the workpiece to be measured conveyed by the feeding module and pushes the workpiece to be measured to the material picking station. At the same time, the orientation of the two side edges of the workpiece to be measured is limited by the guiding mechanism.

[0024] Step 3: The transfer module transfers the workpiece to be measured at the material picking station to the detection platform, and the spacing direction of the side edges of the transferred workpiece to be measured is parallel to the size detection end in the size detection mechanism.

[0025] Step 4: The dimension detection mechanism clamps the two sides of the workpiece to be measured and detects the outer ring size of the workpiece to be measured. The appearance detection mechanism records and detects the surface and teeth of the workpiece to be measured.

[0026] Step 5: The inspected workpieces are transferred to the input port of the diversion output module through the transfer module, and qualified workpieces and unqualified workpieces are diverted and output.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] 1. The present invention realizes full-automatic detection of the workpiece to be detected and diverts and outputs qualified products and unqualified products by sequentially arranging a feeding module, a transfer module, a limit and guidance module, a detection module and a diversion and output module.

[0029] 2. The present invention uses the limit-position guiding module to guide the tool to be tested before testing, so that the width dimension direction of the tool to be tested is parallel to the detection end in the dimension detection mechanism. At the same time, under the transportation of the transfer module, the workpiece to be tested is transported to the detection module and the shunt output module in turn, and tested by the detection module. Under the premise of realizing the fully automatic quality inspection of the workpiece to be tested, the correction step before quality inspection saves the time required for testing, improves the quality inspection efficiency, and reduces the false detection rate caused by the placement deviation of the workpiece to be tested.

[0030] 3. In the present invention, the width dimension of the workpiece to be measured is detected by clamping two moving blocks and cooperating with a displacement sensor. The measuring head of the displacement sensor is moved to the end of the other moving block, causing the detection end to be compressed and displaced to achieve product size measurement, effectively avoiding the wear and error of the workpiece to be measured and the gauge caused by sliding detection in the gauge. At the same time, through regular detection of standard parts, the accuracy of the gauge can be confirmed in a timely and effective manner.

[0031] 4. The present invention arranges a horizontal lifting component on the material picking station, and uses the horizontal lifting component to horizontally adjust the workpiece to be measured after being clamped by the transfer module, thereby ensuring that the workpiece to be measured is horizontal after being clamped by the transfer module, thereby avoiding detection errors in the width size of the workpiece to be measured caused by the workpiece to be measured being in a tilted state when being clamped by the transfer module. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the workpiece being measured;

[0033] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 3 Schematic diagram of the structure of the middle limit guiding module of the present invention ( Figure 2 Partial enlarged view of part A in the middle);

[0035] Figure 4 It is a schematic diagram of the relative positions of the guide rail, the push cylinder and the limit cylinder in the present invention;

[0036] Figure 5 It is a schematic diagram of the position of the lifting rod on the guide groove in the present invention;

[0037] Figure 6 is a schematic diagram of the structure of the detection module in the present invention ( Figure 2 (partial enlarged view of part B in the middle);

[0038] Figure 7 Schematic diagram of the relative positions of the detection platform, the moving block and the tooth front camera in the present invention;

[0039] Figure 8 It is a structural schematic diagram of the shunt output module in the present invention.

[0040] Figure markings: 1. Feeding module; 1-1. Guide rail; 2. Transfer module; 3. Limiting and guiding module; 3-1. Limiting base; 3-2. Pushing cylinder; 3-3. Limiting cylinder; 3-4. Guide; 3-5. Guide groove; 3-6. Lifting rod; 4. Detection module; 4-1. Mounting base; 4-2. Detection platform; 4-3. Displacement sensor; 4-4. Moving block; 4-5. Spring; 4-6. Displacement drive cylinder; 4-7. Tooth front camera; 5. Diversion output module; 5-1. Dropping channel; 5-2. Stop block; 5-3. First branch channel; 5-4. Second branch channel; 6. Measured workpiece. DETAILED DESCRIPTION

[0041] In the description of the present invention, it is necessary to understand that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] The present invention will be further described below in conjunction with the accompanying drawings.

[0043] like Figure 1 and 2 As shown, a universal size and appearance inspection device for automobile parts includes a support frame, and a feed module 1, a transfer module 2, a limit and guide module 3, a detection module 4 and a diversion output module 5 installed on the support frame. Among them, the feed module 1 is used to transport the workpieces 6 to be measured one by one to the limit and guide module 3. The limit and guide module 3 is used to push the workpieces 6 to the material picking station that is convenient for the transfer module 2 to grab, and at the same time, guide the workpieces 6 to ensure that when the workpieces 6 are transferred to the detection module 4 through the transfer module 2, the side is parallel to the size detection end in the detection module 4.

[0044] The workpiece 6 to be tested is divided into a tooth portion, a width dimension detection area and a special-shaped portion in sequence. Among them, the width dimension detection area is provided with a steel stamp and a stamped convex portion. The detection module 4 is used to detect the size of the width dimension detection area of ​​the workpiece 6 to be tested, the steel stamp symbol on the surface of the workpiece, the shape of the convex portion, and the tooth portion. The shunt output module 5 is used to shunt and output qualified workpieces and unqualified workpieces detected by the detection module 4.

[0045] The feeding module 1 includes a vibration plate, a silo and a guide rail 1-1. The vibration plate is arranged on the storage silo, and its input end extends into the bottom of the silo, and the output end is connected to the feed port of the guide rail 1-1. Under the action of vibration, the workpieces 6 to be measured in the silo can be arranged one by one and output to the guide rail 1-1. A material drop chute and a material-shifting baffle are provided on the guide rail 1-1 in sequence. Among them, the width of the material drop chute is equal to half the length of the workpiece 6 to be measured. The material-shifting baffle is tilted on the track. The workpiece 6 to be measured moves along the guide rail 1-1 driven by the vibration plate. When it moves to the material drop chute, the workpiece 6 to be measured with the teeth facing outward will fall back from the material drop chute to the silo and be output again because the weight of the teeth is greater than the weight of the special-shaped part. Otherwise, it will continue to move along the track. When the side of the workpiece 6 with the convex portion passes through the material-shifting baffle, it will gradually tilt and flip under the limitation of the material-shifting baffle, so that the workpiece 6 with the convex portion facing upward is output to the limit guiding module 3.

[0046] like Figure 3-5 As shown, the limiting and guiding module 3 includes a pushing limiting mechanism and a guiding mechanism. The pushing limiting mechanism includes a limiting base 3-1, a pushing cylinder 3-2 and a limiting cylinder 3-3. Among them, a guide groove 3-5 for limiting the state of the workpiece 6 to be measured is provided on the limiting base. The guide groove 3-5 is provided with a material picking station for easy grasping by the transfer module 2. The pushing cylinder 3-2 and the limiting cylinder 3-3 are respectively arranged at the two ends of the guide groove 3-5. A pushing rod and a limiting rod are respectively fixed on the piston rods of the pushing cylinder 3-2 and the limiting cylinder 3-3. The end shapes of the pushing rod and the limiting rod match the workpiece 6 to be measured. During the detection work, the pushing cylinder 3-2 and the limiting cylinder 3-3 cooperate with each other. The pushing cylinder 3-2 pushes the workpiece 6 to the material picking station, while the limiting cylinder 3-3 limits the workpiece 6 to the preset material picking station, thereby avoiding the position of the workpiece 6 to be offset from the material picking station when being pushed.

[0047] The guiding mechanism includes a guiding member 3-4 and a guiding cylinder. The guiding member 3-4 is arranged on one side of the material picking station. Driven by the guiding cylinder, the guiding member 3-4 extends or retracts in a direction perpendicular to the length direction of the guide groove 3-5, and cooperates with the side wall of the guide groove 3-5 to guide the inclined workpiece 6 on the material picking station, so that the spacing direction of the two side edges of the workpiece 6 after correction is parallel to the detection direction of the detection end of the outer ring size inspection in the detection module 4.

[0048] In this embodiment, the guide groove 3-5 is a groove with a symmetrical step surface. The groove-shaped guide groove 3-5 can facilitate the transfer module 2 to clamp. Further, a horizontal jacking assembly is provided on the material-retrieving station. The horizontal jacking assembly is used to horizontally adjust the workpiece 6 to be measured after being clamped by the transfer module 2, ensuring that the workpiece 6 to be measured after being clamped by the transfer module 2 is horizontal, that is, the bottom surface of the workpiece 6 to be measured is parallel to the horizontal plane.

[0049] Specifically, the horizontal lifting assembly includes a lifting cylinder and a lifting rod 3-6. A clearance groove that cooperates with the lifting rod 3-6 is provided on the material picking station. The top of the lifting rod 3-6 extends into the clearance groove, and can be pushed upward or dropped downward under the drive of the lifting cylinder. In the initial state, the top of the lifting rod 3-6 is flush with the top of the clearance groove. When the limiting guide completes the correction of the workpiece 6 to be measured and is grasped by the transfer module 2, the lifting rod 3-6 is driven by the lifting cylinder to be pushed upward, thereby driving the workpiece 6 to be measured to be adjusted in the horizontal direction.

[0050] Furthermore, a distance sensor is provided on the guide groove 3-5, and the distance sensor senses that the workpiece 6 to be measured enters the guide groove 3-5, and then controls the feeding cylinder and the pushing cylinder 3-2 to push the workpiece 6 to be measured to the material taking station.

[0051] In this embodiment, the transfer module 2 uses an industrial robot. The industrial robot can clamp the workpiece 6 after the correction, and the two ends of the clamping are the tooth end and the special-shaped end opposite to the tooth end. The industrial robot transports the workpiece 6 to the detection module 4 while maintaining the spacing direction of the two sides parallel to the outer ring size detection end of the detection module 4, and performs size and tooth area detection.

[0052] like Figure 6 and 7 As shown, the detection module 4 includes a mounting base 4-1, a detection platform 4-2, a size detection mechanism and an appearance detection mechanism. Among them, the mounting base 4-1 is fixed on the support frame. The detection platform 4-2 is fixed on the top surface of the mounting base 4-1. The size detection mechanism includes a displacement sensor 4-3, a moving block 4-4 and a displacement drive assembly. The two moving blocks 4-4 are symmetrically arranged on both sides of the detection platform 4-2, and are both slidably connected to the mounting base 4-1. The moving block 4-4 is provided with a clamping block for clamping the workpiece 6 to be measured on the side facing the detection platform 4-2. The two moving blocks 4-4 can move away from or close to one side of the detection platform 4-2 under the drive of the displacement drive assembly, and clamp the workpiece 6 to be measured through the two clamping blocks when approaching, and release the clamping when moving away.

[0053] During operation, the industrial robot transfers the workpiece 6 to the testing platform 4-2, and drives the two clamps to move toward one side of the testing platform 4-2 through the displacement drive to clamp the two side edges of the workpiece 6. The clamps of the industrial robot release after the clamps complete the clamping of the workpiece 6.

[0054] The displacement sensor 4-3 is fixed on one of the moving blocks 4-4. The measuring head of the displacement sensor 4-3 is moved to the end of the other moving block 4-4, causing the detection end to be compressed and displaced to achieve product size measurement. The displacement sensor 4-3 forms measurement data, and the measurement data is controlled by information processing software to determine the product status.

[0055] In this embodiment, the displacement drive assembly includes two springs 4-5 and a displacement drive cylinder 4-6. Among them, mounting brackets fixed by bolts are provided on both sides of the mounting base 4-1. The two springs 4-5 are respectively installed on the two mounting brackets on the side facing the moving block 4-4. The two moving blocks 4-4 are respectively driven by the two springs 4-5 to move to the side of the detection platform 4-2, thereby driving the two clamping blocks to complete the clamping of the workpiece 6 to be measured.

[0056] The displacement drive cylinder 4-6 is fixed in the middle of the mounting base 4-1. The two moving blocks 4-4 can move in opposite directions under the drive of the displacement drive cylinder 4-6 and release the clamping of the workpiece 6 to be tested. When the thrust of the displacement drive cylinder 4-6 is released, the moving block 4-4 is driven by the spring 4-5 to move toward the detection platform 4-2, and the two clamping blocks cooperate with each other to clamp the workpiece 6 to be tested placed on the detection platform 4-2.

[0057] like Figure 7 As shown, the appearance inspection mechanism includes a surface inspection camera, a tooth front camera 4-7 and an information processing module. Among them, the surface inspection camera and the tooth front camera 4-7 are respectively installed directly above and directly in front of the inspection base. When the workpiece 6 to be inspected is placed on the inspection platform 4-2, the tooth portion of the workpiece 6 to be inspected is directly opposite to the tooth front camera 4-7 in front. The surface inspection camera and the tooth front camera 4-7 are used to inspect the surface and the tooth portion of the workpiece 6 to be inspected respectively.

[0058] Furthermore, in this embodiment, light sources are provided on the sides of the surface detection camera and the tooth front camera 4-7. The light sources cooperate with the tooth surface camera and the tooth front camera 4-7 to make the photographed pictures clearer.

[0059] During the measurement process, after the tooth front camera 4-7 takes a photo of the tooth part of the workpiece 6, the information processing module converts the different brightness of the light source on the tooth top and tooth bottom into an adjustable threshold; the width corresponding to the tooth top threshold is measured by setting the threshold range, and each width corresponds to a qualified tooth; the total number of teeth is summarized and compared with the set number of teeth to realize defect detection. When there is a defect in the tooth, the threshold width will exceed the set range, the number of teeth will decrease, and it will be judged as unqualified.

[0060] The surface inspection camera is used to detect the presence of grooves and steel-printed characters on the surface of the workpiece 6 to be tested. By registering qualified parts as the judgment basis, the surface photos of the workpiece 6 taken by the surface inspection camera are compared with qualified parts, and a corresponding score is generated according to the degree of similarity. If the score exceeds the set value, it is judged as qualified, otherwise it is unqualified. The tested workpiece 6 is transported to the shunt output module 5 by the industrial robot. The shunt output module 5 performs shunt output according to whether the workpiece 6 is qualified or unqualified.

[0061] like Figure 8 As shown, the flow splitting output module 5 includes a material drop channel 5-1, a stopper 5-2 and a rotating cylinder. The material drop channel 5-1 is divided into a material drop port at the top and a material discharge port. Two flow splitting channels are provided at the material discharge port, namely a first branch channel 5-3 and a second branch channel 5-4. The stopper 5-2 is rotatably connected to the flow splitting ports of the first branch channel 5-3 and the second branch channel 5-4, and rotates under the drive of the rotating cylinder.

[0062] When the size and appearance information of the workpiece 6 to be measured are qualified after being detected and processed by the information processing module, the rotary cylinder drives the block 5-2 to rotate, blocking the feed port of the second branch channel 5-4, so that the qualified workpiece 6 to be measured is output to the qualified material frame through the blanking channel 5-1 and the first branch channel 5-3. When the outer ring size and appearance information of the workpiece 6 to be measured are unqualified after being detected and processed by the information processing module, the rotary cylinder drives the block 5-2 to rotate in the opposite direction, blocking the feed port of the first branch channel 5-3, so that the qualified workpiece 6 to be measured is output to the unqualified material frame through the blanking channel 5-1 and the second branch channel 5-4.

[0063] The inspection steps of the size and appearance inspection device for automobile parts are as follows:

[0064] Step 1: The workpieces 6 to be measured in the silo are driven by the vibration plate and directed in a preset direction and output one by one along the guide rail 1 - 1 to the guide groove 3 - 5 .

[0065] Step 2: The push cylinder 3-2 cooperates with the limit cylinder 3-3 to push the workpiece 6 to the material picking station through the push cylinder 3-2, and at the same time, cooperate with the limit cylinder 3-3 to limit the workpiece 6 to the preset material picking station.

[0066] Step three, under the drive of the guide cylinder, the limit guide extends in a direction perpendicular to the length direction of the guide groove 3-5, and cooperates with the side wall of the guide groove 3-5 to guide the inclined workpiece 6 on the material picking station, so that the spacing direction of the two side edges of the workpiece 6 after correction is parallel to the detection direction of the detection end of the outer ring size inspection in the detection module 4.

[0067] Step 4: The industrial robot grips the workpiece 6 to be measured after being aligned.

[0068] Step 5: The lifting cylinder drives the lifting rod 3-6 to push upward, thereby driving the workpiece 6 to be measured to be adjusted in the horizontal direction, so that the bottom surface of the workpiece 6 to be measured is parallel to the horizontal plane.

[0069] Step 6: The industrial robot transfers the workpiece 6 to the testing platform 4-2. The spring 4-5 drives the moving block 4-4 to move toward the testing platform 4-2, and the two clamping blocks cooperate with each other to clamp the workpiece 6 placed on the testing platform 4-2.

[0070] The product size is measured by moving the measuring head of the displacement sensor 4-3 to the end of another moving block 4-4, causing the detection end to be compressed and displaced, and the size measurement data of the width size detection area of ​​the measured workpiece 6 is formed through the displacement sensor 4-3.

[0071] At the same time, the surface detection camera and the tooth front camera 4-7 respectively take photos of the surface and the tooth portion of the workpiece 6. The information processing module is used to receive and compare the photos taken by the surface detection camera and the tooth front camera 4-7 with the photos of the standard part.

[0072] In this embodiment, the industrial robot regularly places the standard workpiece on the detection platform 4-2 for calibration detection to ensure measurement accuracy.

[0073] Step seven, the workpiece 6 to be measured is transferred to the feeding port of the blanking channel 5-1 by the industrial robot. When the workpiece 6 to be measured is a qualified product, the rotary cylinder drives the block 5-2 to rotate to block the feeding port of the second branch channel 5-4, so that the qualified workpiece 6 to be measured is output to the qualified material frame through the blanking channel 5-1 and the first branch channel 5-3.

[0074] When the workpiece 6 to be measured is an unqualified product, the rotary cylinder drives the block 5-2 to rotate in the opposite direction to block the feed port of the first branch channel 5-3, so that the qualified workpiece 6 to be measured is output to the unqualified material frame through the blanking channel 5-1 and the second branch channel 5-4.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A universal size and appearance inspection device for automobile parts, characterized in that: include A feeding module (1), the feeding module (1) being used to convey the workpieces to be tested one by one; A position limiting and guiding module (3), the position limiting and guiding module (3) comprising a pushing position limiting mechanism and a guiding mechanism; the pushing position limiting mechanism is used to receive the workpiece to be measured conveyed by the feeding module (1) and push it to the material taking station; the guiding mechanism is used to limit the orientation of two side edges of the workpiece to be measured; A horizontal jacking assembly, comprising a jacking cylinder and a jacking rod (3-6); a clearance groove cooperating with the jacking rod (3-6) is provided on the material taking station; the top of the jacking rod (3-6) extends into the clearance groove and can be pushed upward or dropped downward under the drive of the jacking cylinder; A detection module (4), the detection module (4) comprising a detection platform (4-2), a dimension detection mechanism and an appearance detection mechanism, the dimension detection mechanism being used to detect the width dimension of a workpiece being measured, and the appearance detection mechanism being used to detect the surface and tooth portion of the workpiece being measured; The size detection mechanism comprises a mounting base (4-1), a displacement sensor (4-3), a moving block (4-4) and a displacement drive assembly; the detection platform (4-2) is fixed on the mounting base (4-1); two moving blocks (4-4) are symmetrically arranged on both sides of the detection platform (4-2), and are both slidably connected to the mounting base (4-1); the two moving blocks (4-4) can move away from or towards one side of the detection platform (4-2) under the drive of the displacement drive assembly; the displacement sensor (4-3) is fixed on one of the moving blocks (4-4), and the detection end extends between the two moving blocks (4-4); A transfer module (2), the transfer module (2) being used to transfer the workpiece to be measured at the material taking station to the detection platform (4-2), and the spacing direction of the side edges of the transferred workpiece to be measured is parallel to the size detection end in the size detection mechanism; A shunt output module (5), the shunt output module (5) is used to shunt and output qualified workpieces and unqualified workpieces detected by the size detection mechanism and the appearance detection mechanism.

2. A universal automobile parts size and appearance detection device according to claim 1, characterized in that: The displacement drive assembly comprises a spring (4-5) and a displacement drive cylinder (4-6); mounting frames are fixed on both sides of the mounting base (4-1); two ends of the two springs (4-5) respectively abut against the corresponding mounting frames and the moving blocks (4-4); the displacement drive cylinder (4-6) is fixed to the middle of the mounting base (4-1), with its two ends facing the two moving blocks (4-4) respectively, and is used to drive the two moving blocks (4-4) to move in opposite directions.

3. A device for detecting the size and appearance of a universal automobile component according to claim 1, characterized in that: The appearance detection mechanism comprises a surface detection camera, a tooth front camera (4-7) and an information processing module; the surface detection camera and the tooth front camera (4-7) are respectively installed directly above and directly in front of the detection base, and are used to take photos of the surface and tooth portion of the workpiece being tested; the information processing module is used to receive and compare the photos taken by the surface detection camera and the tooth front camera (4-7) with photos of standard parts.

4. A universal automobile parts size and appearance detection device according to claim 1, characterized in that: The pushing and limiting mechanism comprises a limiting base (3-1), a material pushing cylinder (3-2) and a limiting cylinder (3-3); a guide groove (3-5) is provided on the limiting base (3-1); the material taking station is arranged on the guide groove (3-5); the material pushing cylinder (3-2) and the limiting cylinder (3-3) are respectively arranged at two ends of the guide groove (3-5); The guiding mechanism comprises a guiding piece (3-4) and a guiding air cylinder; the guiding piece (3-4) is arranged on one side of the material taking station; the guiding piece (3-4) is driven by the guiding air cylinder to extend or retract along a direction perpendicular to the length direction of the guide groove (3-5).

5. A device for detecting the size and appearance of a universal automobile component according to claim 1, characterized in that: The feeding module (1) comprises a vibration plate, a material bin and a guide rail (1-1); the vibration plate is arranged on the storage material bin, and the input end extends into the bottom of the material bin, and the output end is connected to the material inlet of the guide rail (1-1), and can arrange the workpieces to be tested in the material bin one by one and output them to the guide rail (1-1) under the action of vibration; the guide rail (1-1) is provided with a material drop chute and a material blocking piece in sequence.

6. A universal automobile parts size and appearance detection device according to claim 1, characterized in that: The flow-dividing output module (5) comprises a material-dropping channel (5-1), a stopper (5-2) and a rotating cylinder; the material-dropping channel (5-1) is divided into a material-dropping port and a material-discharging port at the top; two flow-dividing channels are provided at the material-discharging port, namely a first branch channel (5-3) and a second branch channel (5-4); the stopper (5-2) is rotatably connected to the flow-dividing ports of the first branch channel (5-3) and the second branch channel (5-4), and is rotated under the drive of the rotating cylinder.

7. A device for detecting the size and appearance of a universal automobile component according to claim 1, characterized in that: The transfer module (2) adopts an industrial robot.

8. The detection method of the size and appearance detection device of a universal automobile part according to claim 1, characterized in that: The specific steps are as follows: Step 1: The feeding module (1) transports the workpieces to be tested one by one in a specified direction to the pushing limit guiding module (3); Step 2: The pushing and limiting mechanism in the limiting and guiding module (3) receives the workpiece to be measured output by the feeding module (1), and pushes the workpiece to be measured to the material picking station. At the same time, the orientation of the two side edges of the workpiece to be measured is limited by the guiding mechanism; when the limiting guide member completes the guidance of the workpiece to be measured (6) and is grasped by the transfer module (2), the lifting rod (3-6) is driven upward by the lifting cylinder, thereby driving the workpiece to be measured (6) to be adjusted in the horizontal direction; Step 3: The transfer module (2) transfers the workpiece to be measured at the material taking station to the detection platform (4-2) of the detection module (4), and the spacing direction of the side edges of the transferred workpiece to be measured is parallel to the size detection end in the size detection mechanism; Step 4: The two clamping blocks are driven by the displacement driving member to move toward one side of the detection platform (4-2) to clamp the edges of the workpiece (6) to be detected; the clamping jaws of the transfer module (2) are released after the clamping blocks have completed clamping the workpiece (6) to be detected; and the width dimension of the workpiece to be detected is detected; the appearance detection mechanism records and detects the surface and teeth of the workpiece to be detected; The transfer module (2) regularly places the standard workpiece on the detection platform (4-2) for calibration and detection to ensure measurement accuracy; Step 5: The inspected workpieces are transported to the input port of the diversion output module (5) through the transfer module (2), and qualified workpieces and unqualified workpieces are diverted and output.

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