Injection molding detection device and method for automotive upholstery

Abstract

The invention relates to the technical field of injection molding part detection, and discloses an automobile interior trim part injection molding detection device and method.The automobile interior trim part injection molding detection device comprises a bottom plate, a feeding and discharging mechanical arm is fixedly installed on the upper surface of the bottom plate, a door-shaped plate is fixedly installed on the upper surface of the bottom plate, and a bearing disc is rotatably installed on the upper surface of the door-shaped plate; a plurality of mounting grooves are formed in the upper surface of the bearing disc in the circumferential direction at equal intervals in a penetrating mode, an electric suction cup is fixedly installed on the inner wall of each mounting groove, an L-shaped cantilever plate is fixedly installed on the upper surface, opposite to the feeding and discharging mechanical arm, of the bottom plate, and a display mechanism is installed on the L-shaped cantilever plate. According to the invention, the pit and the convex part of the injection molding machine are obviously distinguished from the surface of the injection molding part, so that a visual sensor can shoot and detect the surface of the injection molding part more clearly subsequently, and the detection accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molded part detection, and particularly to an injection detection device and method for automotive interior parts. Background Art

[0002] There are various types of injection molded parts for automotive interior parts, which usually include the following categories: instrument panels, door interiors, seats, sunshades and interior parts of skylights, air vents, armrest boxes, center armrests, gear levers, foot pedals, steering wheels, etc. These injection molded parts can be made of different types of plastics, such as ABS, PP, PC, PA, PE, PBT, TPU, TPV, etc. Their uses are rich and diverse, and they are all important integral parts of a small car's interior. During the production of the instrument panel of a small car or a small in-vehicle mounting plate, and the instrument panel or the small in-vehicle mounting plate is usually a relatively flat panel, it is necessary to conduct quality inspections on it to detect and analyze the quality and defects of injection molded products of automotive interior parts, such as surface flatness, wall thickness, holes, bubbles, etc. And qualified quality plays a decisive factor in the sale and quality of the car.

[0003] An existing injection detection device for small automotive interior parts (Publication No.: CN220297759U) has at least the following drawbacks: The above patent can blow the dust or impurities on the surface of the injection molded part through a jet nozzle. On the one hand, it can ensure more accurate data during detection, help reduce the risks of misjudgment and missed detection, and improve the detection accuracy. On the other hand, it can also clean the surface of the injection molded part, making potential defects easier to be accurately detected and identified. Due to the same color on the surface of the injection molded part, it is difficult to distinguish the concave or convex parts on the surface of the injection molded part from the surrounding colors, affecting the detection accuracy. Summary of the Invention

[0004] The purpose of the present invention is to solve the drawbacks existing in the prior art, and to propose an injection detection device and method for automotive interior parts.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: An injection detection device for automotive interior parts, including a bottom plate. A loading and unloading robotic arm is fixedly installed on the upper surface of the bottom plate. A gantry plate is fixedly installed on the upper surface of the bottom plate. A carrier plate is rotatably installed on the upper surface of the gantry plate. A plurality of installation grooves are equidistantly penetrated in the circumferential direction on the upper surface of the carrier plate. An electric suction cup is fixedly installed on the inner wall of each installation groove. An L-shaped cantilever plate is fixedly installed on the upper surface of the bottom plate opposite to the loading and unloading robotic arm. A display mechanism is installed on the L-shaped cantilever plate.

[0006] As a further solution of the present invention, the display mechanism includes an electric telescopic rod fixedly installed on the upper surface of the L-shaped cantilever plate. The telescopic end of the electric telescopic rod is fixedly installed with a mounting frame. A brush roller is rotatably installed between the outer surfaces of the opposite sides of the mounting frame, and a liquid adding component is installed inside the mounting frame.

[0007] As a further solution of the present invention, a mounting plate is fixedly installed on the outer surface of the mounting frame away from the side of the loading and unloading robotic arm. A wiping pad is fixedly installed at the bottom end of the mounting plate, and the horizontal height of the bottom end of the wiping pad is higher than the horizontal height of the bottom end of the brush roller.

[0008] As a further solution of the present invention, the liquid adding component includes a liquid adding box fixedly installed between the outer surfaces of the opposite sides of the mounting frame. A cotton pad is embedded at the bottom end of the liquid adding box. The outer circumference of the brush roller is in contact with the outer surface of the cotton pad. A plurality of liquid outlet holes are formed through the bottom end of the liquid adding box, and a liquid supply component is installed on the bottom plate.

[0009] As a further solution of the present invention, the liquid supply component includes a liquid storage tank fixedly installed on the upper surface of the bottom plate. A piston cylinder is horizontally fixedly installed on the outer surface of the L-shaped cantilever plate. A second conduit that is fixedly installed and communicates with each other is provided between the piston cylinder and the liquid adding box. A first conduit that is fixedly installed and conducts with each other is provided between the piston cylinder and the liquid adding box. One-way valves with opposite conduction directions are installed on the first conduit and the second conduit respectively. A liquid pumping component is installed inside the piston cylinder.

[0010] As a further solution of the present invention, the liquid pumping component includes a movable plug slidably installed inside the piston cylinder. A movable rod is fixedly installed on the outer surface of the movable plug close to the side of the bearing plate. A hollow guide frame is fixedly installed at the end of the movable rod away from the movable plug. A transmission component is installed between the outer surface of the L-shaped cantilever plate and the bearing plate.

[0011] As a further solution of the present invention, the transmission component includes a driven gear rotatably installed on the outer surface of the L-shaped cantilever plate. A guide rod is fixedly installed on the lower surface of the driven gear. The guide rod is inserted into the inside of the hollow guide frame and is slidably installed with its inner wall. A driving gear ring is fixedly installed on the lower surface of the bearing plate. The driven gear meshes with the driving gear ring.

[0012] As a further solution of the present invention, a vacuum cleaner is fixedly installed on the upper surface of the bottom plate between the loading and unloading robotic arm and the L-shaped cantilever plate. A suction pipe is fixedly installed at the suction end of the vacuum cleaner. A suction hood is fixedly installed at the intake end of the suction pipe. The suction hood is arranged above the bearing plate. A stepping motor is fixedly installed on the top wall of the gantry plate. The output end of the stepping motor penetrates through the upper surface of the gantry plate and is fixedly installed with the rotation center of the bearing plate.

[0013] As a further solution of the present invention, a support plate is fixedly installed on the upper surface of the bottom plate relative to the vacuum cleaner, and a vision sensor is fixedly installed at the top of the support plate, and the vision sensor is arranged above the carrier plate.

[0014] An injection molding detection method for automotive interior parts includes the following steps: S1: Place the automotive interior injection molded part to be detected on the adjacent electric suction cup through the loading and unloading robotic arm, so that the electric suction cup adsorbs and fixes the injection molded part. S2: The stepping motor drives the carrier plate to rotate towards the direction of the vacuum cleaner, so that when the injection molded part placed on the carrier plate passes under the dust suction hood, the vacuum cleaner sucks away the dust on the surface of the injection molded part through the dust suction pipe and the dust suction hood. S3: When the carrier plate drives the injection molded part to move under the brush roller, the telescopic end of the electric telescopic rod drives the entire brush roller to move downward, so that the outer circumference of the brush roller is in contact with the surface of the injection molded part. As the injection molded part continues to move, the brush roller will brush a pigment different from the color of the injection molded part itself on the surface of the injection molded part. At this time, the pits on the surface of the injection molded part cannot be coated with the pigment. At the same time, since the wiping pad installed on the side of the mounting frame through the mounting plate has an installation height slightly higher than that of the brush roller, the wiping pad can wipe off the pigment coated on the protruding part of the surface of the injection molded part, making the pits and the protruding parts form an obvious distinction from the surface of the injection molded part. S4: When the carrier plate drives the injection molded part to move under the vision sensor, the vision sensor will take pictures and detect the surface of the injection molded part, and the qualified or unqualified products detected will be unloaded and classified and stored by the loading and unloading robotic arm.

[0015] The beneficial effects of the present invention are as follows: 1. When the carrier plate drives the injection molded part to move under the brush roller, the telescopic end of the electric telescopic rod drives the entire brush roller to move downward, so that the outer circumference of the brush roller is in contact with the surface of the injection molded part. As the injection molded part continues to move, the brush roller will brush a pigment different from the color of the injection molded part itself on the surface of the injection molded part. At this time, the pits on the surface of the injection molded part cannot be coated with the pigment. At the same time, since the wiping pad installed on the side of the mounting frame through the mounting plate has an installation height slightly higher than that of the brush roller, the wiping pad can wipe off the pigment coated on the protruding part of the surface of the injection molded part, making the pits and the protruding parts form an obvious distinction from the surface of the injection molded part, so as to enable the vision sensor to more clearly take pictures and detect the surface of the injection molded part subsequently, improving the detection accuracy. 2. When the carrier plate rotates, it will drive the driving gear ring to rotate, causing the driving gear ring to drive the driven gear meshing with it to rotate. When the driven gear rotates, it can drive the movable rod and the movable plug to perform a piston motion inside the piston cylinder through the guide rod and the hollow guide frame, enabling the movable plug to pump the pigment in the liquid storage tank into the piston cylinder through the second conduit, and then squeezing the pumped pigment into the liquid adding box through the first conduit, so that the pigment in the liquid adding box can overflow from the liquid outlet hole into the cotton pad, and the cotton pad can evenly apply the pigment on the surface of the brush roller, ensuring that there is always pigment on the surface of the brush roller, so as to better brush the pigment on the surface of the injection molded part by the brush roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a left view structural schematic diagram of an injection molding detection device for automotive interior parts proposed by the present invention; Figure 2 FIG. is a right view structural schematic diagram of an injection molding detection device for automotive interior parts proposed by the present invention; Figure 3 FIG. is a bottom view structural schematic diagram of the carrier plate of an injection molding detection device for automotive interior parts proposed by the present invention; Figure 4 FIG. is a sectional view structural schematic diagram of the L-shaped cantilever plate of an injection molding detection device for automotive interior parts proposed by the present invention; Figure 5 FIG. is a structural schematic diagram of the mounting rack of an injection molding detection device for automotive interior parts proposed by the present invention; Figure 6 FIG. is a top view structural schematic diagram of the carrier plate of an injection molding detection device for automotive interior parts proposed by the present invention; Figure 7 is Figure 4 the enlarged view of the structure at A in

[0017] In the figure: 1, bottom plate; 2, portal plate; 3, carrier plate; 4, installation groove; 5, electric suction cup; 6, loading and unloading robotic arm; 7, vacuum cleaner; 8, suction pipe; 9, suction hood; 10, L-shaped cantilever plate; 11, electric telescopic rod; 12, mounting rack; 13, brush roller; 14, liquid adding box; 15, cotton pad; 16, mounting plate; 17, wiping pad; 18, support plate; 19, vision sensor; 20, piston cylinder; 21, first conduit; 22, liquid storage tank; 23, second conduit; 24, movable plug; 25, movable rod; 26, hollow guide frame; 27, driven gear; 28, guide rod; 29, driving gear ring; 30, stepper motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0020] Referring to the attached Figure 1 - attached Figure 7 , an injection molding detection device for automotive interior parts, comprising a bottom plate 1. A loading and unloading robotic arm 6 is fixedly installed on the upper surface of the bottom plate 1. A gantry plate 2 is fixedly installed on the upper surface of the bottom plate 1. A bearing plate 3 is rotatably installed on the upper surface of the gantry plate 2. A plurality of installation grooves 4 are equidistantly penetrated in the circumferential direction on the upper surface of the bearing plate 3. An electric suction cup 5 is fixedly installed on the inner wall of each installation groove 4. An L-shaped cantilever plate 10 is fixedly installed on the upper surface of the bottom plate 1 opposite to the loading and unloading robotic arm 6. A display mechanism is installed on the L-shaped cantilever plate 10. In this embodiment, a vacuum cleaner 7 is fixedly installed on the upper surface of the bottom plate 1 between the loading and unloading robotic arm 6 and the L-shaped cantilever plate 10. A suction pipe 8 is fixedly installed at the suction end of the vacuum cleaner 7. A suction hood 9 is fixedly installed at the intake end of the suction pipe 8. The suction hood 9 is arranged above the bearing plate 3. A stepping motor 30 is fixedly installed on the top wall of the gantry plate 2. The output end of the stepping motor 30 penetrates the upper surface of the gantry plate 2 and is fixedly installed with the rotation center of the bearing plate 3. The specific connection manners and working principles of a plurality of electrical components are well-known technologies in the art and will not be elaborated herein.

[0021] During use, the automotive interior injection molded part to be detected is placed on the adjacent electric suction cup 5 through the loading and unloading robotic arm 6, so that the electric suction cup 5 adsorbs and fixes the injection molded part, preventing the injection molded part from moving during subsequent detection operations and affecting the detection effect. After the electric suction cup 5 adsorbs and fixes the injection molded part, the stepping motor 30 drives the bearing plate 3 to rotate towards the direction of the vacuum cleaner 7, so that when the injection molded part placed on the bearing plate 3 passes below the suction hood 9, the vacuum cleaner 7 can suck away the dust on the surface of the injection molded part through the suction pipe 8 and the suction hood 9, avoiding the dust adhering to the surface of the injection molded part and affecting the detection effect on it.

[0022] In this embodiment, the display mechanism includes an electric telescopic rod 11 fixedly installed on the upper surface of the L-shaped cantilever plate 10. An installation frame 12 is fixedly installed at the telescopic end of the electric telescopic rod 11. A brush roller 13 is rotatably installed between the outer surfaces on opposite sides of the installation frame 12. A liquid adding component is installed inside the installation frame 12. An installation plate 16 is fixedly installed on the outer surface of the installation frame 12 away from the loading and unloading robotic arm 6. A wiping pad 17 is fixedly installed at the bottom end of the installation plate 16. The horizontal height of the bottom end of the wiping pad 17 is higher than the horizontal height of the bottom end of the brush roller 13.

[0023] When the carrier plate 3 drives the injection molded part to move below the brush roller 13, the telescopic end of the electric telescopic rod 11 drives the entire brush roller 13 to move downward, so that the outer circumference of the brush roller 13 is in contact with the surface of the injection molded part. As the injection molded part continues to move, the brush roller 13 will brush a pigment on the surface of the injection molded part that is different from the color of the injection molded part itself. At this time, the pits on the surface of the injection molded part cannot be coated with the pigment. At the same time, since the wiping pad 17 installed on the side of the mounting frame 12 through the mounting plate 16 is slightly higher in installation height than the brush roller 13, the wiping pad 17 can wipe off the pigment smeared on the protruding part of the surface of the injection molded part, making the pits and the protruding parts form an obvious distinction from the surface of the injection molded part, so that the subsequent vision sensor 19 can more clearly capture and detect the surface of the injection molded part, improving the detection accuracy.

[0024] In this embodiment, the liquid adding assembly includes a liquid adding box 14 fixedly installed between the outer surfaces of the opposite sides of the mounting frame 12. A cotton pad 15 is embedded at the bottom end of the liquid adding box 14. The outer circumference of the brush roller 13 is in contact with the outer surface of the cotton pad 15. A plurality of liquid outlet holes are formed through the bottom end of the liquid adding box 14. A liquid supply assembly is installed on the bottom plate 1. The liquid supply assembly includes a liquid storage tank 22 fixedly installed on the upper surface of the bottom plate 1. A piston cylinder 20 is horizontally fixedly installed on the outer surface of the L-shaped cantilever plate 10. A second conduit 23 that is interconnected is fixedly installed between the piston cylinder 20 and the liquid adding box 14. A first conduit 21 that is interconnected is fixedly installed between the piston cylinder 20 and the liquid adding box 14. Check valves with opposite conduction directions are respectively installed on the first conduit 21 and the second conduit 23. A liquid pumping assembly is installed inside the piston cylinder 20. The liquid pumping assembly includes a movable plug 24 slidably installed inside the piston cylinder 20. A movable rod 25 is fixedly installed on the outer surface of the movable plug 24 close to the carrier plate 3. A hollow guide frame 26 is fixedly installed at the end of the movable rod 25 away from the movable plug 24. A transmission assembly is installed between the outer surface of the L-shaped cantilever plate 10 and the carrier plate 3. The transmission assembly includes a driven gear 27 rotatably installed on the outer surface of the L-shaped cantilever plate 10. A guide rod 28 is fixedly installed on the lower surface of the driven gear 27. The guide rod 28 is inserted into the inside of the hollow guide frame 26 and is slidably installed on its inner wall. A driving gear ring 29 is fixedly installed on the lower surface of the carrier plate 3. The driven gear 27 meshes with the driving gear ring 29.

[0025] When the carrier plate 3 rotates, it will drive the driving gear ring 29 to rotate, causing the driving gear ring 29 to drive the driven gear 27 meshing with it to rotate. When the driven gear 27 rotates, it can drive the movable rod 25 and the movable plug 24 to perform a piston motion inside the piston cylinder 20 through the guide rod 28 and the hollow guide frame 26. The movable plug 24 can draw the pigment in the liquid storage tank 22 into the piston cylinder 20 through the second conduit 23, and then squeeze the drawn pigment into the liquid adding box 14 through the first conduit 21, so that the pigment in the liquid adding box 14 can overflow from the liquid outlet hole into the cotton pad 15, and the cotton pad 15 evenly applies the pigment on the surface of the brush roller 13, ensuring that there is always pigment on the surface of the brush roller 13, so that the brush roller 13 can better brush the pigment on the surface of the injection molded part.

[0026] In this embodiment, a support plate 18 is fixedly installed on the upper surface of the bottom plate 1 relative to the vacuum cleaner 7, and a vision sensor 19 is fixedly installed at the top of the support plate 18. The vision sensor 19 is arranged above the carrier plate 3.

[0027] When the carrier plate 3 drives the injection molded part to move below the vision sensor 19, the vision sensor 19 will take a picture and detect the surface of the injection molded part. The qualified or unqualified products detected will be unloaded and classified and stored by the loading and unloading robotic arm 6.

[0028] An injection molding detection method for automotive interior parts includes the following steps: S1: Place the automotive interior injection molded part to be detected on the adjacent electric suction cup 5 through the loading and unloading robotic arm 6, so that the electric suction cup 5 adsorbs and fixes the injection molded part. S2: The stepping motor 30 drives the carrier plate 3 to rotate towards the vacuum cleaner 7, so that when the injection molded part placed on the carrier plate 3 passes below the dust suction hood 9, the vacuum cleaner 7 sucks away the dust on the surface of the injection molded part through the dust suction pipe 8 and the dust suction hood 9. S3: When the carrier plate 3 drives the injection molded part to move below the brush roller 13, the telescopic end of the electric telescopic rod 11 drives the entire brush roller 13 to move downward, so that the outer circumference of the brush roller 13 is in contact with the surface of the injection molded part. As the injection molded part continues to move, the brush roller 13 will brush a pigment different from the color of the injection molded part itself on the surface of the injection molded part. At this time, the pits on the surface of the injection molded part cannot be coated with pigment. At the same time, since the wiping pad 17 installed on the side of the mounting frame 12 through the mounting plate 16 is installed slightly higher than the brush roller 13, the wiping pad 17 can wipe off the pigment coated on the protruding part of the surface of the injection molded part, making the pits and the protruding parts form a distinct distinction from the surface of the injection molded part. S4: When the carrier plate 3 drives the injection molded part to move below the vision sensor 19, the vision sensor 19 will take a picture and detect the surface of the injection molded part. The qualified or unqualified products detected will be unloaded and classified and stored by the loading and unloading robotic arm 6.

[0029] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: during use, the handling robot 6 places the automotive interior injection molded part to be detected on the adjacent electric suction cup 5, enabling the electric suction cup 5 to adsorb and fix the injection molded part, preventing the injection molded part from moving during subsequent detection operations and affecting the detection effect; After the electric suction cup 5 adsorbs and fixes the injection molded part, the stepping motor 30 drives the carrier plate 3 to rotate towards the direction of the vacuum cleaner 7, so that when the injection molded part placed on the carrier plate 3 passes under the dust suction hood 9, the vacuum cleaner 7 can suck away the dust on the surface of the injection molded part through the dust suction pipe 8 and the dust suction hood 9, avoiding dust adhesion on the surface of the injection molded part and affecting its detection effect; When the carrier plate 3 drives the injection molded part to move under the brush roller 13, the telescopic end of the electric telescopic rod 11 drives the entire brush roller 13 to move downward, so that the outer periphery of the brush roller 13 is in contact with the surface of the injection molded part. As the injection molded part continues to move, the brush roller 13 will brush a pigment on the surface of the injection molded part that is different from the color of the injection molded part itself. At this time, the pits on the surface of the injection molded part cannot be coated with the pigment. At the same time, since the wiping pad 17 installed on the side of the mounting frame 12 through the mounting plate 16 is installed slightly higher than the brush roller 13, the wiping pad 17 can wipe off the pigment smeared on the protruding part of the surface of the injection molded part, making the pits and the protruding parts form a distinct distinction from the surface of the injection molded part, so that the vision sensor 19 can more clearly capture and detect the surface of the injection molded part subsequently, improving the detection accuracy; When the carrier plate 3 rotates, it will drive the driving gear ring 29 to rotate, so that the driving gear ring 29 drives the driven gear 27 meshing with it to rotate. When the driven gear 27 rotates, it can drive the movable rod 25 and the movable plug 24 to perform a piston motion inside the piston cylinder 20 through the guide rod 28 and the hollow guide frame 26, enabling the movable plug 24 to draw the pigment in the liquid storage tank 22 into the piston cylinder 20 through the second conduit 23, and then squeeze the drawn pigment into the liquid adding box 14 through the first conduit 21, so that the pigment in the liquid adding box 14 can overflow from the liquid outlet hole into the cotton pad 15, and the cotton pad 15 then evenly smears the pigment on the surface of the brush roller 13, ensuring that there is always pigment on the surface of the brush roller 13, so that the brush roller 13 can better brush the pigment on the surface of the injection molded part; When the carrier plate 3 drives the injection molded part to move under the vision sensor 19, the vision sensor 19 will capture and detect the surface of the injection molded part, and the qualified or unqualified products detected will be unloaded and classified and stored by the handling robot 6.

[0030] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automobile interior decoration part injection molding detection device, comprising a base plate (1), a loading and unloading mechanical arm (6) being fixedly mounted on the upper surface of the base plate (1), characterized in that: A door-shaped plate (2) is fixedly mounted on the upper surface of the base plate (1), a carrier plate (3) is rotatably mounted on the upper surface of the door-shaped plate (2), a plurality of mounting grooves (4) are equidistantly penetrated through the upper surface of the carrier plate (3) in a circumferential direction, an electric suction cup (5) is fixedly mounted on the inner wall of each mounting groove (4), an L-shaped cantilever plate (10) is fixedly mounted on the upper surface of the base plate (1) opposite to the loading and unloading robot arm (6), and a display mechanism is mounted on the L-shaped cantilever plate (10).

2. The automotive interior parts injection molding detection device according to claim 1, characterized in that: The display mechanism comprises an electric telescopic rod (11) fixedly mounted on the upper surface of an L-shaped cantilever plate (10), a mounting frame (12) fixedly mounted on the telescopic end of the electric telescopic rod (11), a brush roller (13) rotatably mounted between outer surfaces of two opposite sides of the mounting frame (12), and a liquid adding assembly mounted on the inner side of the mounting frame (12).

3. The automotive interior parts injection molding detection device according to claim 2, characterized in that: A mounting plate (16) is fixedly mounted on the outer surface of the mounting frame (12) on a side away from the loading and unloading mechanical arm (6), and a wiping pad (17) is fixedly mounted on the bottom end of the mounting plate (16), wherein the horizontal height of the bottom end of the wiping pad (17) is higher than the horizontal height of the bottom end of the brush roller (13).

4. The automobile interior decoration parts injection molding detection device according to claim 2, characterized in that: The liquid adding assembly comprises a liquid adding box (14) fixedly mounted between the outer surfaces of two opposite sides of the mounting frame (12); a cotton pad (15) is embedded in the bottom end of the liquid adding box (14); the outer periphery of the brush roller (13) is in contact with the outer surface of the cotton pad (15); a plurality of liquid outlet holes are formed through the bottom end of the liquid adding box (14); and a liquid supply assembly is mounted on the bottom plate (1).

5. The automobile interior decoration parts injection molding detection device according to claim 4, characterized in that: The liquid supply assembly comprises a liquid storage box (22) fixedly mounted on the upper surface of the base plate (1); a piston cylinder (20) is fixedly mounted laterally on the outer surface of the L-shaped cantilever plate (10); a second conduit (23) in communication with the liquid adding box (14) is fixedly mounted between the piston cylinder (20); a first conduit (21) in communication with the liquid adding box (14) is fixedly mounted between the piston cylinder (20); and a liquid pumping assembly is mounted inside the piston cylinder (20).

6. The automobile interior decoration parts injection molding detection device according to claim 5, characterized in that: The pumping assembly comprises a movable plug (24) slidably mounted inside the piston cylinder (20); a movable rod (25) is fixedly mounted on the outer surface of the movable plug (24) on a side close to the carrier plate (3); a hollow guide frame (26) is fixedly mounted on an end of the movable rod (25) away from the movable plug (24); and a transmission assembly is mounted between the outer surface of the L-shaped cantilever plate (10) and the carrier plate (3).

7. The automobile interior decoration part injection molding detection device according to claim 6, characterized in that: The transmission assembly comprises a driven gear (27) rotatably mounted on the outer surface of the L-shaped cantilever plate (10); a guide rod (28) is fixedly mounted on the lower surface of the driven gear (27); the guide rod (28) is inserted into the interior of the hollow guide frame (26) and slidably mounted on the inner wall thereof; a driving gear ring (29) is fixedly mounted on the lower surface of the carrier plate (3); the driven gear (27) meshes with the driving gear ring (29).

8. The automobile interior decoration parts injection molding detection device according to claim 1, characterized in that: A vacuum cleaner (7) is fixedly mounted on the upper surface of the bottom plate (1) located between the loading and unloading mechanical arm (6) and the L-shaped cantilever plate (10); a vacuum pipe (8) is fixedly mounted on the suction end of the vacuum cleaner (7); a vacuum hood (9) is fixedly mounted on the air inlet end of the vacuum pipe (8); the vacuum hood (9) is arranged above the supporting plate (3); a stepper motor (30) is fixedly mounted on the top wall of the door plate (2); an output end of the stepper motor (30) passes through the upper surface of the door plate (2) and is fixedly mounted to the rotation center of the supporting plate (3).

9. The automobile interior decoration parts injection molding detection device according to claim 8, characterized in that: A support plate (18) is fixedly mounted on the bottom plate (1) relative to the upper surface of the vacuum cleaner (7), a visual sensor (19) is fixedly mounted on the top of the support plate (18), and the visual sensor (19) is arranged above the carrying plate (3).

10. A method for testing injection molding of automobile interior decoration parts, characterized in that: The automotive interior decoration parts injection molding detection device according to any one of claims 1 to 9 comprises the following steps: S1: placing the automobile interior molding to be inspected on an adjacent electric suction cup (5) by means of a loading and unloading robot arm (6), so that the electric suction cup (5) adsorbs and fixes the molding; S2: the stepper motor (30) drives the carrier plate (3) to rotate in the direction of the dust collector (7), so that when the injection molded part placed on the carrier plate (3) passes under the dust cover (9), the dust collector (7) sucks away the dust on the surface of the injection molded part through the dust collection pipe (8) and the dust collection cover (9); S3: When the carrier plate (3) drives the injection molded part to move below the brush roller (13), the telescopic end of the electric telescopic rod (11) drives the brush roller (13) to move downward as a whole, so that the outer periphery of the brush roller (13) is in contact with the surface of the injection molded part. As the injection molded part continues to move, the brush roller (13) will apply a paint different from the color of the injection molded part itself to the surface of the injection molded part. At this time, the pits on the surface of the injection molded part cannot be painted with paint. At the same time, because the installation height of the wiping pad (17) installed on the side of the mounting frame (12) through the mounting plate (16) is slightly higher than the brush roller (13), the wiping pad (17) can wipe off the paint applied on the protruding part of the surface of the injection molded part, so that the pits and the protruding part are clearly distinguished from the surface of the injection molded part. S4: When the carrier plate (3) drives the injection molded part to move below the visual sensor (19), the visual sensor (19) will take a picture of the surface of the injection molded part for inspection, and the qualified or unqualified products detected will be unloaded and classified and stored by the loading and unloading robot arm (6).

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