Plastic part inspection machine

Abstract

The invention discloses a plastic part inspection machine which comprises a machine body, a positioning jig assembly arranged on the machine body and used for positioning a product, a visual inspection assembly arranged on the machine body and used for detecting the product, a receiving assembly arranged on the machine body and a manipulator assembly arranged on the machine body and used for shifting the product. And the visual detection assembly comprises a front surface detection unit for detecting the front surface of the product and a back surface detection unit for detecting the back surface of the product. The front face detection unit and the back face detection unit form the visual detection assembly to meet the requirement for visual detection of the front face and the back face of the workpiece in one station, and the purposes of achieving intelligent and automatic visual detection of the front face and the back face of the workpiece, optimizing visual detection equipment, improving the visual detection efficiency and reducing the production cost are achieved.

Description

Technical Field

[0001] This invention relates to the field of workpiece inspection applications, and more specifically to a plastic parts inspection machine. Background Technology

[0002] In existing technologies, visual inspection uses machines to replace human eyes for measurement and judgment. Visual inspection refers to the process where machine vision products (i.e., image acquisition devices, which can be CMOS or CCD) convert the captured target into image signals and transmit them to a dedicated image processing system. In traditional processes, visual inspection of workpieces typically requires manual flipping to complete the visual inspection of both sides. This necessitates a combination of manual labor and two sets of vision equipment, increasing equipment costs. Furthermore, manual methods are prone to missing flips, leading to inaccurate inspections and reduced production efficiency.

[0003] How to achieve intelligent and automated visual inspection of the front and back of workpieces and improve the efficiency of visual inspection are technical problems that urgently need to be solved by technicians in this field.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the general background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention proposes a plastic parts inspection machine to achieve intelligent and automated visual inspection of the front and back of workpieces, improve the efficiency of visual inspection, and reduce production costs.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows:

[0007] A plastic parts inspection machine includes a body, a positioning fixture assembly disposed on the body for positioning the product, a vision inspection assembly disposed on the body for inspecting the product, a receiving assembly disposed on the body, and a robotic arm assembly disposed on the body for moving the product.

[0008] Products are continuously placed on the positioning fixture assembly. The robotic arm assembly picks up the products from the positioning fixture and moves them to the vision inspection assembly for front and back inspection. Based on the inspection results, the receiving assembly distinguishes and collects good and defective products.

[0009] The visual inspection component includes a front inspection unit for inspecting the front of the product and a back inspection unit for inspecting the back of the product.

[0010] This invention uses a front detection unit and a back detection unit to form a vision inspection component to meet the vision inspection requirements of the front and back of a workpiece at a single workstation. This achieves the goals of intelligent and automated vision inspection of the front and back of workpieces, optimizes vision inspection equipment, improves the efficiency of vision inspection, and reduces production costs.

[0011] It is further worth noting that the front detection unit includes a bracket mounted on the machine body and a first CCD camera equipped with a light source mounted on the bracket; the back detection unit includes a lifting module mounted on the machine body, a second CCD camera mounted on the lifting module, a back detection platform mounted on the machine body for convenient product placement, a main moving guide rail located below the back detection platform, and a main motor driving the back detection platform to move along the main moving guide rail. The back detection platform, main moving guide rail, and main motor automate the back detection of the workpiece, while the movement of the back detection platform also improves the convenience of the detection process.

[0012] It is further worth noting that the lifting module includes a column mounted on the machine body, a first slide rail mounted on the column, a first motor mounted at the top of the first slide rail, a lead screw mounted on the first motor, and a slider mounted on the lead screw; the second CCD camera is mounted on the slider; under the action of the first motor and the lead screw, the slider can move up and down along the slide rail.

[0013] It is also worth noting that a disc is provided at the bottom of the bracket, and a second motor is provided at the center of the disc, which drives the disc to rotate.

[0014] The disc is disposed on the surface of the machine body, and a pair of arc-shaped grooves are provided on the disc, the two arc-shaped grooves being centrally symmetrical about the center of the disc. The machine body is also provided with a limiting post, which is disposed in the arc-shaped groove.

[0015] It is also worth noting that the positioning fixture assembly includes a workpiece placement platform and a scissor lift telescopic frame disposed below the workpiece placement platform;

[0016] The workpiece placement platform is also equipped with a positioning detector at its end.

[0017] It is also worth noting that the receiving assembly includes a good product collection unit for collecting good products and a defective product collection unit for collecting defective products, and the good product collection route and the defective product collection route are arranged perpendicularly.

[0018] It is also worth noting that the good product collection unit includes a good product collection slide rail disposed on the machine body, a first guide rail disposed on the machine body, a first cylinder disposed on the first guide rail, and a first lever disposed at the head end of the first cylinder; the reverse inspection platform can be moved to the top of the good product collection slide rail.

[0019] It is also worth noting that the defective product collection unit includes a defective product collection box disposed in the machine body, a second guide rail disposed on the machine body, a second cylinder disposed on the second guide rail, and a second lever disposed on the second cylinder. The extension and retraction direction of the movable end of the second cylinder is consistent with the placement direction of the second guide rail.

[0020] The good product collection chute is located at one end of the main guide rail, and the defective product collection box is located on the outside of the other end of the main guide rail. By automatically and separately collecting defective and good products, it is convenient to collect materials automatically and uniformly, thus improving the efficiency of workpiece collection.

[0021] It is also worth noting that the good product collection unit includes a buffer baffle disposed on the side of the machine body. The buffer baffle is positioned above the good product collection chute, and its bottom end can be pushed open by the workpiece. The buffer baffle reduces the risk of workpiece damage.

[0022] It is also worth noting that the robotic arm assembly includes a six-axis robot mounted on the body and a robotic arm gripper at the end of the six-axis robot.

[0023] The present invention has the following advantages:

[0024] 1. This invention uses a front detection unit and a back detection unit to form a vision inspection component to meet the vision inspection requirements of the front and back of a workpiece at one workstation. This achieves the goals of intelligent and automated vision inspection of the front and back of the workpiece, optimizes the vision inspection equipment, improves the efficiency of vision inspection, and reduces production costs.

[0025] 2. This invention automates the reverse inspection of workpieces by setting up a reverse inspection table, a main moving guide rail, and a main motor. At the same time, the movement of the reverse inspection table also improves the convenience of inspection.

[0026] 3. This invention facilitates the unified and automatic collection of materials by automatically and separately collecting defective and good products, thereby improving the efficiency of workpiece collection.

[0027] 4. The present invention can reduce the risk of workpiece damage by setting up a buffer baffle. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0029] Figure 1 This is a schematic diagram of the structure of a plastic parts inspection machine disclosed in an embodiment of the present invention;

[0030] Figure 2 This is a side view schematic diagram of a plastic parts inspection machine disclosed in an embodiment of the present invention;

[0031] Figure 3 This is a front view schematic diagram of a front inspection unit in a plastic parts inspection machine disclosed in an embodiment of the present invention;

[0032] Figure 4 This is a front view schematic diagram of the reverse side detection unit in a plastic parts inspection machine disclosed in an embodiment of the present invention;

[0033] Figure 5 This is a front view schematic diagram of a positioning fixture assembly in a plastic parts inspection machine disclosed in an embodiment of the present invention;

[0034] Figure 6 This is a top view schematic diagram of the receiving assembly in a plastic parts inspection machine disclosed in an embodiment of the present invention;

[0035] The numbers and letters in the diagram represent the names of the corresponding components:

[0036] 1. Machine body 2. Positioning fixture assembly 21. Workpiece placement platform 22. Scissor lift telescopic frame 23. Positioning detector

[0037] 3. Visual inspection components 31. Front detection unit 311. Support 312. First CCD camera 313. Disc

[0038] 314. Arc-shaped groove; 32. Reverse detection unit; 321. Lifting module; 3211. Column; 3212. First slide rail

[0039] 3213. First motor; 3214. Lead screw; 3215. Slider; 322. Second CCD camera; 323. Reverse inspection stage.

[0040] 324. Main moving guide rail; 325. Main motor; 41. Good product collection unit; 411. Good product collection slide; 412. First guide rail.

[0041] 413. First cylinder; 414. First lever; 415. Buffer baffle; 42. Defective product collection unit; 421. Defective product collection box.

[0042] 422. Second guide rail 423. Second cylinder 424. Second lever 5. Robotic arm assembly 51. Six-axis robot

[0043] 52. Robotic gripper. Detailed Implementation

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0045] This invention provides a plastic parts inspection machine. Its working principle is to realize the visual inspection of the front and back sides of the workpiece at one workstation by forming a visual inspection component composed of a front inspection unit and a back inspection unit. This achieves the goals of intelligent and automated visual inspection of the front and back sides of the workpiece, optimizes the visual inspection equipment, improves the efficiency of visual inspection, and reduces production costs.

[0046] The present invention will be further described in detail below with reference to embodiments and specific implementation methods.

[0047] like Figure 1 and Figure 2 As shown, a plastic parts inspection machine includes a body 1, a positioning fixture assembly 2 disposed on the body for positioning the product, a vision inspection assembly 3 disposed on the body for inspecting the product, a receiving assembly disposed on the body, and a robotic arm assembly 5 disposed on the body for moving the product.

[0048] Products are continuously placed on the positioning fixture assembly. The robotic arm assembly picks up the products from the positioning fixture and moves them to the vision inspection assembly for front and back inspection. Based on the inspection results, the receiving assembly distinguishes and collects good and defective products.

[0049] The visual inspection component includes a front inspection unit 31 for inspecting the front of the product and a back inspection unit 32 for inspecting the back of the product.

[0050] More specifically, such as Figure 3 As shown, the front detection unit includes a bracket 311 mounted on the body and a first CCD camera 312 equipped with a light source mounted on the bracket.

[0051] like Figure 4 and Figure 5 As shown, the reverse detection unit includes a lifting module 321 mounted on the machine body, a second CCD camera 322 mounted on the lifting module, a reverse detection platform 323 mounted on the machine body for convenient product placement, a main moving guide rail 324 mounted below the reverse detection platform, and a main motor 325 that drives the reverse detection platform to move along the main moving guide rail.

[0052] In practical use, the robotic arm assembly picks up the workpiece from the positioning fixture assembly and places it above the first CCD camera 312. The first CCD camera then takes a picture of the workpiece's front side for inspection. After the front side inspection, the robotic arm assembly places the workpiece directly onto the reverse inspection stage 323. Driven by the main moving guide rail 324 and the main motor 325, the reverse inspection stage is moved towards the second CCD camera, which then inspects the reverse side of the workpiece, thus fulfilling the requirement for visual inspection of both the front and back sides of the workpiece. Finally, based on the inspection results, the receiving assembly sorts and collects the workpiece.

[0053] In a new embodiment, for example... Figure 4 As shown, the lifting module includes a column 3211 mounted on the machine body, a first slide rail 3212 mounted on the column, a first motor 3213 mounted at the top of the first slide rail, a lead screw 3214 mounted on the first motor, and a slider 3215 mounted on the lead screw. A second CCD camera is mounted on the slider, and the slider can move up and down along the slide rail under the action of the first motor and the lead screw. By adjusting the height of the second CCD camera, the inspection requirements of the workpiece can be further met.

[0054] In a new embodiment, for example... Figure 3 As shown, a disc 313 is provided at the bottom of the bracket, and a second motor (not shown) is provided at the center of the disc, which drives the disc to rotate.

[0055] The disc is disposed on the surface of the machine body, and the disc has a pair of arc-shaped grooves 314, which are centrally symmetrical about the center of the disc. A limiting post (not shown) is also provided on the machine body, and the limiting post is disposed within the arc-shaped groove. The second motor enables the disc to rotate, driving the support to rotate, thereby allowing adjustment of the first CCD camera within a horizontal range. This facilitates the movement of the robotic arm assembly and optimizes the entire device. Simultaneously, the presence of the limiting grooves and limiting posts limits the rotation of the disc, preventing the first CCD camera from colliding with the side wall of the housing or the support during rotation, thus improving the safety of the first CCD camera during use.

[0056] In a new embodiment, reentry Figure 5 As shown, the positioning fixture assembly includes a workpiece placement platform 21 and a scissor lift telescopic frame 22 disposed below the workpiece placement platform [a common telescopic mechanism of the scissor lift telescopic frame, which will not be described in detail here]; a positioning detector 23 is also provided at the end of the workpiece placement platform. The height of the workpiece placement platform can be adjusted by the scissor lift telescopic frame, which facilitates the robot arm assembly to grasp the workpiece.

[0057] In a new embodiment, the figure is shown again. Figure 1 As shown, the receiving assembly includes a good product collection unit 41 for collecting good products and a defective product collection unit 42 for collecting defective products, and the good product collection route and the defective product collection route are arranged perpendicularly.

[0058] like Figure 6 As shown, the good product collection unit includes a good product collection slide 411 disposed on the machine body, a first guide rail 412 disposed on the machine body, a first cylinder 413 disposed on the first guide rail, and a first lever 414 disposed at the head end of the first cylinder; the reverse inspection platform can be moved to the top of the good product collection slide.

[0059] The defective product collection unit includes a defective product collection box 421 disposed in the machine body, a second guide rail 422 disposed on the machine body, a second cylinder 423 disposed on the second guide rail, and a second lever 424 disposed on the second cylinder. The extension and retraction direction of the movable end of the second cylinder is consistent with the placement direction of the second guide rail.

[0060] The good product collection chute is located at one end of the main guide rail, and the defective product collection box is located on the outside of the other end of the main guide rail. When the workpiece undergoes reverse visual inspection, the horizontal part of the first lever will rise a certain distance, providing space for the movement of the reverse inspection table.

[0061] After the inspection is completed, when the workpiece is a good product, the first lever descends a certain distance under the action of the first cylinder. As the reverse inspection table moves (at this time, the bottom of the horizontal part of the first lever is close to the surface of the reverse inspection table, which can make the reverse inspection table move while blocking the workpiece), the first lever blocks the workpiece. When the reverse inspection table returns to the initial position, the workpiece loses support and falls onto the good product collection slide 411, thus realizing the collection of good workpieces.

[0062] When a defective product is detected, the first lever remains stationary, without obstructing the reverse inspection table and the workpiece. When the reverse inspection table returns to its initial position, the second lever, under the action of the second cylinder, pushes the workpiece into the defective product collection box.

[0063] In a new embodiment, for example... Figure 2 As shown, the good product collection unit also includes a buffer baffle 415 disposed on the side of the machine body. The buffer baffle is located above the good product collection slide, and its bottom end can be pushed open by the workpiece. The presence of the buffer baffle 415 can decelerate the workpiece and prevent it from falling directly and causing damage.

[0064] In a new embodiment, for example... Figure 1As shown, the robotic arm assembly includes a six-axis robot 51 mounted on the body and a robotic gripper 52 at the end of the six-axis robot. The six-axis robot 51 allows the robotic gripper 52 to be positioned in any location, enhancing the intelligence of the equipment.

[0065] Through the above methods, the plastic parts inspection machine provided by the present invention uses a front detection unit and a back detection unit to form a vision inspection component to realize the vision inspection requirements of the front and back of the workpiece at one workstation, thereby achieving the goals of intelligent and automated vision inspection of the front and back of the workpiece, optimizing the vision inspection equipment, improving the efficiency of vision inspection, and reducing production costs.

[0066] The above description is only a preferred embodiment of a plastic parts inspection machine disclosed in this invention. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of this invention, and these all fall within the protection scope of this invention.

Claims

1. A plastic part inspection machine characterized by, The machine body is provided with a positioning jig assembly for positioning products, a visual detection assembly for detecting products, a material collecting assembly, and a mechanical hand assembly for moving products; The products are continuously placed on the positioning jig assembly, the mechanical hand assembly obtains the products from the positioning jig and moves to the visual detection assembly for front and back detection, and according to the detection results, the good products and the defective products are separated and collected by the material collecting assembly; The visual detection assembly comprises a front detection unit for detecting the front of the product and a back detection unit for detecting the back of the product.

2. A machine for inspecting plastic parts as claimed in claim 1, characterized in that The front detection unit comprises a bracket provided on the machine body, a first CCD camera provided with a light source and arranged on the bracket; the back detection unit comprises a lifting module provided on the machine body, a second CCD camera arranged on the lifting module, a back detection table provided on the machine body for facilitating product placement, a main moving guide rail provided below the back detection table, and a main motor for driving the back detection table to move along the main moving guide rail.

3. A machine for inspecting plastic parts as claimed in claim 2, characterized in that The lifting module comprises a lifting module, a first sliding rail provided on the machine body, a first motor provided at the top end of the first sliding rail, a lead screw provided on the first motor, and a sliding block provided on the lead screw; the second CCD camera is mounted on the sliding block; under the action of the first motor and the lead screw, the sliding block can move up and down along the sliding rail.

4. A machine for inspecting plastic parts as defined in claim 2, characterized in that The bottom of the bracket is provided with a disc, the center of the disc is provided with a second motor, and the second motor drives the disc to rotate; The disc is arranged on the surface of the machine body, the disc is provided with a pair of arc-shaped grooves, and the two arc-shaped grooves are centrally symmetric about the center of the disc; the machine body is further provided with a limiting column, and the limiting column is arranged in the arc-shaped groove.

5. The plastic part inspection machine of claim 1, wherein, The positioning jig assembly comprises a workpiece placement platform and a scissor telescopic frame arranged below the workpiece placement platform. The end of the workpiece placement platform is further provided with a positioning detector.

6. A machine for inspecting plastic parts as defined in claim 2, wherein The material collecting assembly comprises a good product collecting unit for collecting good products and a defective product collecting unit for collecting defective products, and the good product collecting route and the defective product collecting route are arranged vertically.

7. A machine for inspecting plastic parts as defined in claim 6, characterized in that The good product collecting unit comprises a good product collecting slide provided on the machine body, a first guide rail provided on the machine body, a first cylinder provided on the first guide rail, and a first lever provided at the head end of the first cylinder; the back detection table can move to the top end of the good product collecting slide.

8. A machine for inspecting plastic parts as defined in claim 7, characterized in that The defective product collecting unit comprises a defective product collecting box arranged in the machine body, a second guide rail arranged on the machine body, a second cylinder arranged on the second guide rail, and a second lever arranged on the second cylinder; the extension direction of the movable end of the second cylinder is consistent with the arrangement direction of the second guide rail; The good product collecting slide is arranged at one end of the main guide rail, and the defective product collecting box is arranged outside the other end of the main guide rail.

9. A machine for inspecting plastic parts as defined in claim 7, characterized in that The good product collecting unit further comprises a buffer baffle arranged on the side of the machine body.

10. The plastic part inspection machine of claim 1, wherein, The mechanical arm assembly comprises a six-axis robot arranged on the machine body and a mechanical arm clamp at the end of the six-axis robot.

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