Product quality management monitoring device for intelligent automobile production line

Abstract

The application relates to the technical field of automobile part quality inspection equipment, and particularly discloses a product quality management and monitoring equipment for an automobile intelligent production line, which comprises the following structure: the top of a water tank is designed in an open mode, and a water solution is prearranged in the inner cavity of the water tank; a plurality of bearing columns are vertically arranged on the top of the water tank; a top plate is arranged on the top of the plurality of bearing columns; a part transfer module is arranged on the top plate and electrically connected with a control device; a blanking conveying device is arranged on one side of the water tank and electrically connected with the control device, and is used for blanking conveying of automobile sheet metal parts; a feeding conveying device is arranged on the other side of the water tank and electrically connected with the control device, and is used for feeding conveying of the automobile sheet metal parts; and a testing module is arranged on the water tank and electrically connected with the control device, and is used for air tightness testing of the automobile sheet metal parts. The application solves the defect of high labor cost in the prior art, and has the characteristics of high practicability.

Description

Technical Field

[0001] This invention relates to the field of automotive parts quality inspection equipment technology, and in particular to a product quality management and monitoring device for intelligent automotive production lines. Background Technology

[0002] In the automobile manufacturing process, the airtightness of automotive sheet metal parts is an important reference indicator for evaluating the quality of automotive sheet metal parts. Therefore, it is necessary to test the airtightness of the welds of automotive sheet metal parts.

[0003] In existing technologies, testing equipment typically involves placing the automotive sheet metal parts upside down in a water tank containing a pre-filled aqueous solution, and inflating the inner cavity of the sheet metal parts with air. By observing whether bubbles emerge from the weld seams on the surface of the sheet metal parts, the quality of the sheet metal parts can be determined. Furthermore, workers can rework and repair the sheet metal parts based on the location of the bubbles.

[0004] However, existing testing equipment can only observe the leakage location of sheet metal parts undergoing air tightness testing. The leakage location needs to be manually marked immediately after the inspection of the automotive sheet metal parts is completed to facilitate subsequent rework and repair of the automotive sheet metal parts, which has the drawback of high labor costs. Summary of the Invention

[0005] To address the high labor costs of existing testing equipment, this invention provides a product quality management and monitoring device for an intelligent automotive production line, comprising: a water tank, several supporting columns, a top plate, a feeding conveyor, an unloading conveyor, a testing module, and a parts transfer module.

[0006] The top of the water tank has an open design, and the inner cavity of the water tank is pre-filled with an aqueous solution;

[0007] Several supporting columns are vertically installed on top of the water tank;

[0008] The top plate is set on top of several load-bearing columns;

[0009] The parts transfer module is mounted on the top plate and is electrically connected to external control equipment.

[0010] The unloading conveyor is located on one side of the water tank and is electrically connected to the control equipment. It is used to unload and convey automotive sheet metal parts.

[0011] The feeding and conveying device is located on the other side of the water tank. The feeding and conveying device is electrically connected to the control equipment and is used to feed and convey automotive sheet metal parts.

[0012] The test module is mounted on the water tank and is electrically connected to the control equipment. It is used to perform airtightness tests on automotive sheet metal parts.

[0013] Furthermore, the test module includes: a load-bearing box, several support legs, a test box, several drain pipes, several drain valves, a water inlet pipe, a water pump, and several load-bearing components and test components;

[0014] The support box is set inside the water tank. The top of the support box adopts an open design, and scale lines are provided on the four vertical walls inside the support box.

[0015] Several support feet are set at the bottom of the load-bearing box, and the several support feet are fixedly connected to the inner cavity bottom plate of the load-bearing box;

[0016] The test chamber is set on the bottom plate of the inner cavity of the carrier box. The top of the test chamber adopts an open design. The cavity formed between the four side walls of the test chamber and the four vertical walls of the inner cavity of the carrier box is the measurement cavity.

[0017] Several drain pipes are installed at the bottom of the support box. The water inlet end of the drain pipe penetrates the outer wall of the support box and connects with the inner cavity of the measuring chamber. The drain outlet end of the drain pipe connects with the inner cavity of the water tank.

[0018] Several drain valves are respectively installed on several drain pipes, and the drain valves are electrically connected to the control equipment to control the opening and closing of the drain pipes.

[0019] The water pump is installed inside the water tank, and the water inlet of the water pump is connected to the inner cavity of the water tank. The water pump is electrically connected to the control equipment.

[0020] The inlet end of the water supply pipe is connected to the outlet end of the water pump, and the outlet end of the water supply pipe is connected to the inner cavity of the test chamber through the top port of the test chamber.

[0021] Several load-bearing components are set on the inner cavity bottom plate of the test chamber, and the load-bearing components cover the inner cavity bottom plate of the test chamber to support automotive sheet metal parts;

[0022] The test assembly is mounted on the water tank and is connected to the inner cavity of the automotive sheet metal parts. It is used to test the airtightness of the welded positions of the automotive sheet metal parts.

[0023] Furthermore, the load-bearing component includes: a load-bearing member, a partition, a base, a slider, a spherical groove, a sphere, a first elastic member, and a second elastic member;

[0024] The support component is a hollow quadrangular prism. Both the top and bottom of the support component adopt an open design. The side walls of the support components of any pair of adjacent support components are tightly fitted. The side walls of the support components of the support components adjacent to the inner cavity vertical wall of the test chamber are tightly fitted to the inner cavity vertical wall of the test chamber. The support component is a rubber component used to support automotive sheet metal parts and seal the four perimeter edges of the inner port of the automotive sheet metal parts.

[0025] A partition is installed in the inner cavity of the support member to divide the inner cavity of the support member into an upper cavity and a lower cavity;

[0026] The base is axially movable in the lower cavity, the side wall of the base is slidably connected to the inner wall of the lower cavity, and the bottom of the base is fixedly connected to the bottom plate of the inner cavity of the test chamber.

[0027] The first elastic element is disposed in the lower cavity, and the two ends of the first elastic element are respectively connected to the base and the partition.

[0028] The slider is axially movable in the upper cavity, and the side wall of the slider is slidably connected to the inner wall of the upper cavity;

[0029] The second elastic element is disposed in the upper cavity. The two ends of the second elastic element are connected to the slider and the partition, respectively. The elastic force of the second elastic element is less than that of the first elastic element.

[0030] A spherical groove is formed at the top of the slider;

[0031] The sphere is rotatably positioned inside the spherical groove, and its shape matches that of the groove. The sphere protrudes from the top surface of the slider.

[0032] Furthermore, the test components include: a first connector, several second connectors, an electric three-way regulating valve, a filter, an air extraction pipe, a first air pump, a distributor, a connecting pipe, a feeding funnel, a second air pump, and a feeding valve;

[0033] The first connector is set on the inner cavity bottom plate of the test chamber. One end of the first connector is connected to the inner cavity of the automotive sheet metal part. The other end of the first connector passes through the inner wall of the test chamber and the bearing chamber and protrudes from the bottom surface of the bearing chamber. The four sides of the first connector are tightly fitted with the side wall of the bearing component.

[0034] Several second connectors are set on the inner cavity bottom plate of the test chamber. One end of the second connector is connected to the inner cavity of the automotive sheet metal part, and the other end of the second connector passes through the inner wall of the test chamber and the bearing chamber and protrudes from the bottom surface of the bearing chamber. The four sides of the second connector are tightly fitted with the side wall of the bearing component.

[0035] The electric three-way regulating valve is installed on the bottom plate of the inner cavity of the water tank. The input end of the electric three-way regulating valve is connected to the other end of the first connector. The electric three-way regulating valve is electrically connected to the external control equipment. Any output end of the electric three-way regulating valve is connected to the inner cavity of the water tank.

[0036] The filter is installed on the bottom plate of the inner cavity of the water tank, and the input end of the filter is connected to the other output end of the electric three-way regulating valve;

[0037] The first air pump is located on the outside of the water tank and is electrically connected to the control equipment.

[0038] One end of the air extraction pipe is connected to the output end of the filter, and the other end of the air extraction pipe passes through the inner wall of the water tank and is connected to the first air pump.

[0039] The distributor is installed on the bottom plate of the inner cavity of the water tank, and several output ends of the distributor are respectively connected to the other end of several second connectors;

[0040] The second air pump is located on the outside of the water tank and is electrically connected to the control equipment.

[0041] One end of the connecting pipe is connected to the input end of the distributor, and the other end of the connecting pipe passes through the inner wall of the water tank and is connected to the second air pump;

[0042] The feeding funnel is set on the side wall of the water tank. The output end of the feeding funnel passes through the outer wall of the connecting pipe and communicates with the inner cavity of the connecting pipe. It is used to feed pigment powder into the inner cavity of the connecting pipe.

[0043] The feeding valve is installed on the connecting pipe and is electrically connected to the control equipment to control the opening and closing of the connecting pipe.

[0044] Furthermore, the filter includes: a supporting housing, several baffles, several impellers, and several filter screens;

[0045] Both ends of the bearing housing adopt an open design. The inner cavity of the bearing housing is cylindrical. The head end of the inner cavity of the bearing housing is connected to the other output end of the electric three-way regulating valve, and the tail end of the inner cavity of the bearing housing is connected to one end of the air extraction pipe.

[0046] Several baffles are arranged in parallel in the inner cavity of the bearing housing. Any baffle is arranged radially along the inner cavity of the bearing housing. The baffle is semi-circular. The curved sidewall of the baffle fits against the curved inner wall of the bearing housing. The curved sidewall of the baffle is fixedly connected to the curved inner wall of the bearing housing. The cavity between any pair of adjacent baffles is a storage cavity.

[0047] Several impellers are rotatably arranged in the inner cavity of the bearing housing. Any impeller is located between any pair of adjacent baffles. The impellers are arranged radially along the inner cavity of the bearing housing. The cross-sectional shape of the impellers matches that of the inner cavity of the bearing housing. The width of the impeller is smaller than the axial width of the storage cavity.

[0048] Several filters are respectively installed on several impellers to filter pigment powder mixed in the air passing through the inner cavity of the bearing housing.

[0049] Furthermore, the wind turbine comprises: an annular body and fan blades;

[0050] The ring is circular and is located inside the inner cavity of the supporting housing. The ring is arranged radially along the inner cavity of the supporting housing. The cross-sectional shape of the ring matches that of the inner cavity of the supporting housing. The outer ring surface of the ring is rolledly connected to the curved inner wall of the supporting housing. The filter screen is set on the end face of the ring facing the inner cavity of the supporting housing.

[0051] The fan blades are set in the inner cavity of the ring body, and several blades of the fan blades are connected to the inner ring surface of the ring body to drive the ring body and the filter screen to rotate.

[0052] Furthermore, the parts transfer module includes: a linear module, a telescopic robotic arm, a universal joint, an electromagnet, and a camera;

[0053] The linear module is installed at the bottom of the telescopic top plate and is electrically connected to the control equipment;

[0054] The telescopic robotic arm is installed at the execution end of the linear module, and the telescopic robotic arm is electrically connected to the control equipment;

[0055] The universal joint is installed at the actuator end of the telescopic robotic arm;

[0056] The electromagnet is connected to the universal joint, and the electromagnet is electrically connected to the control equipment;

[0057] The camera is installed at the bottom of the ceiling panel and is electrically connected to the control equipment.

[0058] Furthermore, the material feeding and conveying device includes: several supporting columns, a conveying housing, several rollers, a conveyor belt, several pairs of assembly shafts, a transmission assembly and a motor;

[0059] Several supporting columns are installed on one side of the water tank;

[0060] The conveyor housing is set on top of several supporting columns. The head end of the conveyor housing is connected to the top port of the water tank. The conveyor housing is inclined towards the tail end. The top, head, and tail ends of the conveyor housing are all designed with an open structure.

[0061] Several rollers are arranged in parallel in the inner cavity of the conveyor housing. The rollers are distributed along the axial direction of the conveyor housing, and any roller is arranged along the radial direction of the conveyor housing. The distance between any pair of adjacent rollers is greater than zero.

[0062] Several pairs of assembly shafts are respectively set at both ends of several roller shafts. Each pair of assembly shafts passes through a pair of vertical walls of the conveyor housing and protrudes from the outer surface of the conveyor housing. The assembly shafts are rotatably connected to the vertical walls of the conveyor housing.

[0063] The transmission assembly is connected to the assembly shaft and is used to drive several rollers to rotate synchronously;

[0064] The motor is mounted on the vertical wall of the conveyor housing, and the actuator of the motor is connected to any assembly shaft. The motor is also electrically connected to the control equipment.

[0065] The conveyor belt is mounted on several rollers, and several through holes are opened on the outer ring surface of the conveyor belt. Any one of the through holes penetrates the outer wall of the conveyor belt and communicates with the inner cavity of the conveyor belt, which is used to transport automotive sheet metal parts.

[0066] Furthermore, the transmission assembly includes: several sprockets and a transmission chain;

[0067] Several sprockets are respectively mounted on several pairs of assembly shafts, and the several sprockets are located on the same side of several roller shafts to drive the several roller shafts to rotate;

[0068] The drive chain is connected to several sprockets and is used to drive the sprockets to rotate synchronously.

[0069] Furthermore, the feeding and conveying device also includes: a vibrator, which is installed at the top of the water tank and connected to the bottom of the conveying housing. The vibrator is electrically connected to the control equipment and is used to strike the conveying housing.

[0070] The product quality management and monitoring equipment for intelligent automotive production lines according to embodiments of the present invention has the following beneficial effects: This device realizes automatic marking of the air leakage location of automotive sheet metal parts through the testing module, saving labor costs and solving the defect of high labor costs in existing testing equipment. At the same time, it facilitates users to judge whether automotive sheet metal parts have been deformed, and has the characteristics of strong practicality.

[0071] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0072] Figure 1 This is a perspective view according to an embodiment of the present invention;

[0073] Figure 2 for Figure 1A magnified view of a portion of region A in the middle;

[0074] Figure 3 A cross-sectional view of the test module according to an embodiment of the present invention;

[0075] Figure 4 for Figure 3 A magnified view of a portion of region B in the middle;

[0076] Figure 5 This is an assembly diagram of the test module according to an embodiment of the present invention (the load-bearing component, the first connector, and the second connector are hidden).

[0077] Figure 6 This is a schematic diagram of the assembly of the load-bearing component according to an embodiment of the present invention;

[0078] Figure 7 This is a schematic diagram illustrating the sealing of the inner port of an automotive sheet metal part by a load-bearing component according to an embodiment of the present invention.

[0079] Figure 8 for Figure 7 A magnified view of a portion of region C in the middle;

[0080] Figure 9 This is an exploded view of the structure of the load-bearing component according to an embodiment of the present invention;

[0081] Figure 10 This is an assembly diagram of the first connector and the second connector according to an embodiment of the present invention;

[0082] Figure 11 for Figure 10 A magnified view of a portion of region D in the middle;

[0083] Figure 12 This is a schematic diagram of the internal structure of a filter according to an embodiment of the present invention;

[0084] Figure 13 A part drawing of a wind turbine according to an embodiment of the present invention;

[0085] Figure 14 This is an assembly diagram of the parts transfer module according to an embodiment of the present invention;

[0086] Figure 15 This is an exploded view of the structure of the feeding and conveying device according to an embodiment of the present invention. Detailed Implementation

[0087] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0088] The foregoing and other technical contents, features, and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the present invention. Furthermore, in all embodiments, the same reference numerals denote the same elements.

[0089] First, combine Figures 1-15 This invention describes a product quality management and monitoring device for an intelligent automotive production line, used to detect the airtightness of weld seams in automotive sheet metal parts, and has a wide range of applications.

[0090] like Figures 1-2 As shown, the product quality management and monitoring equipment for an intelligent automotive production line according to an embodiment of the present invention includes: a water tank 1, several supporting columns 2, a top plate 3, a feeding conveyor 4, a discharging conveyor 8, a testing module, and a parts transfer module 7.

[0091] Specifically, such as Figures 1-2 As shown, the top of the water tank 1 adopts an open design, and the inner cavity of the water tank 1 is pre-filled with an aqueous solution; several supporting columns 2 are vertically installed on the top of the water tank 1; the top plate 3 is installed on the top of the several supporting columns 2; the feeding conveyor 4 is installed on the other side of the water tank 1, and the feeding conveyor 4 is electrically connected to the control equipment for feeding and conveying automotive sheet metal parts 9; the test module is installed on the water tank 1, and the test module is electrically connected to the control equipment for performing airtightness tests on automotive sheet metal parts 9.

[0092] Furthermore, such as Figures 1-5As shown, the test module includes: a support box 51, several support legs 52, a test box 53, several drain pipes 54, several drain valves 55, a water inlet pipe 56, a water pump 57, several support components 58, and a test component; the support box 51 is set in the inner cavity of the water tank 1, the top of the support box 51 adopts an open design, and the four vertical walls of the inner cavity of the support box 51 are provided with scale lines; several support legs 52 are set at the bottom of the support box 51, and the several support legs 52 are fixedly connected to the bottom plate of the inner cavity of the support box 51; the test box 53 is set on the bottom plate of the inner cavity of the support box 51, the top of the test box 53 adopts an open design, and the cavity formed between the four side walls of the test box 53 and the four vertical walls of the inner cavity of the support box 51 is the measuring cavity 511; several drain pipes 54 are set at the bottom of the support box 51, and the water inlet end of the drain pipe 54 penetrates through the outer wall of the support box 51 and connects to the measuring cavity 51. The inner cavity of the measuring chamber 511 is connected, and the drain end of the drain pipe 54 is connected to the inner cavity of the water tank 1. Several drain valves 55 are respectively installed on several drain pipes 54, and the several drain valves 55 are electrically connected to the control equipment to control the opening and closing of several drain pipes 54. The water pump 57 is installed in the inner cavity of the water tank 1, and the water inlet end of the water pump 57 is connected to the inner cavity of the water tank 1. The water pump 57 is electrically connected to the control equipment. The water inlet end of the water supply pipe 56 is connected to the water outlet end of the water pump 57, and the water outlet end of the water supply pipe 56 is connected to the inner cavity of the test chamber 53 through the top port of the test chamber 53. Several bearing components 58 are installed on the bottom plate of the inner cavity of the test chamber 53, and the several bearing components 58 cover the bottom plate of the inner cavity of the test chamber 53 to support the automotive sheet metal part 9. The test component is installed on the water tank 1 and is connected to the inner cavity of the automotive sheet metal part 9 to test the airtightness of the welding position of the automotive sheet metal part 9.

[0093] Furthermore, such as Figures 5-9As shown, the support assembly 58 includes: a support member 581, a partition 582, a base 583, a slider 584, a spherical groove 585, a sphere 586, a first elastic member 587, and a second elastic member 588; the support member 581 is a hollow quadrangular prism, and both the top and bottom of the support member 581 adopt an open design. The side walls of the support members 581 of any pair of adjacent support assemblies 58 are tightly fitted, and the side walls of the support members 581 of the support assembly 58 adjacent to the inner cavity wall of the test chamber 53 are tightly fitted to the inner cavity wall of the test chamber 53. The bearing 581 is a rubber component used to support the automotive sheet metal part 9 and seal the four periphery of the inner port 91 of the automotive sheet metal part 9; the partition 582 is fixedly installed on the inner cavity side wall of the bearing 581 to divide the inner cavity of the bearing 581 into an upper cavity 5811 and a lower cavity 5812; the base 583 is axially movably installed in the lower cavity 5812, the side wall of the base 583 is slidably connected to the inner wall of the lower cavity 5812, and the bottom of the base 583 is fixedly connected to the inner cavity bottom plate of the test chamber 53; the first elastic Component 587 is disposed in the lower cavity 5812. The two ends of the first elastic component 587 are connected to the base 583 and the partition 582, respectively. Slider 584 is axially movably disposed in the upper cavity 5811, with its sidewall slidably connected to the inner wall of the upper cavity 5811. Second elastic component 588 is disposed in the upper cavity 5811. The two ends of the second elastic component 588 are connected to the slider 584 and the partition 582, respectively. The elastic force of the second elastic component 588 is less than that of the first elastic component 587. When subjected to an external force, the second elastic component 588 first… The compression allows the top of the support 581 to abut against the inner port 91 of the automotive sheet metal part 9, thereby enhancing the sealing effect at the edge of the inner port 91 of the automotive sheet metal part 9; the spherical groove 585 is formed on the top of the slider 584; the ball 586 is rotatably disposed in the inner cavity of the spherical groove 585, the shape of the ball 586 matches the inner cavity of the spherical groove 585, and the ball 586 protrudes from the top surface of the slider 584, making it convenient for the user to adjust the position of the automotive sheet metal part 9 after the telescopic robotic arm 72 has placed it.

[0094] Furthermore, such as Figure 5 , 10As shown in Figure 11, the test assembly includes: a first connector 591, several second connectors 592, an electric three-way regulating valve 593, a filter 601, an air extraction pipe 594, a first air pump 595, a distributor 596, a connecting pipe 597, a feeding funnel 598, a second air pump 599, and a feeding valve 600. The first connector 591 is installed on the bottom plate of the inner cavity of the test chamber 53. One end of the first connector 591 is connected to the inner cavity of the automotive sheet metal part 9, and the other end of the first connector 591 passes through the inner wall of the test chamber 53 and the supporting chamber 51, protruding from the bottom surface of the supporting chamber 51. All four sides of the first connector 591 are... The first connector 592 is tightly fitted to the side wall of the support component 581; several second connectors 592 are set on the bottom plate of the inner cavity of the test chamber 53, one end of the second connector 592 is connected to the inner cavity of the automotive sheet metal part 9, and the other end of the second connector 592 passes through the inner wall of the test chamber 53 and the support chamber 51 and protrudes from the bottom surface of the support chamber 51. The four sides of the second connector 592 are tightly fitted to the side wall of the support component 581; an electric three-way regulating valve 593 is set on the bottom plate of the inner cavity of the water tank 1, the input end of the electric three-way regulating valve 593 is connected to the other end of the first connector 591, and the electric three-way regulating valve 593 is electrically connected to the external control equipment. A three-way regulating valve 593 is electrically connected to the inner cavity of the water tank 1. A filter 601 is installed on the bottom plate of the inner cavity of the water tank 1, and its input end is connected to the other output end of the three-way regulating valve 593. A first air pump 595 is installed on the outside of the water tank 1 and is electrically connected to the control equipment. One end of a suction pipe 594 is connected to the output end of the filter 601, and the other end of the suction pipe 594 penetrates the inner wall of the water tank 1 and is connected to the first air pump 595. A diverter 596 is installed on the bottom plate of the inner cavity of the water tank 1, and several output ends of the diverter 596 are respectively connected to the other ends of several second connectors 592. One end is connected; the second air pump 599 is located on the outside of the water tank 1 and is electrically connected to the control equipment; one end of the connecting pipe 597 is connected to the input end of the distributor 596, and the other end of the connecting pipe 597 passes through the inner wall of the water tank 1 and is connected to the second air pump 599; the feeding funnel 598 is located on the side wall of the water tank 1, and the output end of the feeding funnel 598 passes through the outer wall of the connecting pipe 597 and communicates with the inner cavity of the connecting pipe 597, for feeding pigment powder into the inner cavity of the connecting pipe 597; the feeding valve 600 is located on the connecting pipe 597 and is electrically connected to the control equipment, for controlling the opening and closing of the connecting pipe 597.

[0095] Furthermore, such as Figure 5 , 12As shown, the filter 601 includes: a supporting housing 6011, several baffles 6012, several impellers 6015, and several filter screens 6014. Both ends of the supporting housing 6011 adopt an open design. The inner cavity of the supporting housing 6011 is cylindrical. The head end of the inner cavity of the supporting housing 6011 is connected to the other output end of the electric three-way regulating valve 593, and the tail end of the inner cavity of the supporting housing 6011 is connected to one end of the suction pipe 594. Several baffles 6012 are arranged in parallel within the inner cavity of the supporting housing 6011. Any baffle 6012 is radially arranged along the inner cavity of the supporting housing 6011. The baffle 6012 is semi-circular, and its curved sidewall is in contact with the curved inner wall of the supporting housing 6011. The curved sidewall of the baffle 6012 is fixedly connected to the curved inner wall of the bearing housing 6011. The cavity between any pair of adjacent baffles 6012 is the storage cavity 6013. Several impellers 6015 are rotatably arranged in the inner cavity of the bearing housing 6011. Any impeller 6015 is located between any pair of adjacent baffles 6012. The impellers 6015 are arranged radially along the inner cavity of the bearing housing 6011. The cross-sectional shape of the impellers 6015 matches that of the inner cavity of the bearing housing 6011. The width of the impellers 6015 is smaller than the axial width of the storage cavity 6013. Several filter screens 6014 are respectively arranged on the several impellers 6015 to filter pigment powder mixed in the air passing through the inner cavity of the bearing housing 6011.

[0096] Furthermore, such as Figure 12 , 13 As shown, the impeller 6015 includes: an annular body 60151 and fan blades 60152; the annular body 60151 is circular and is located in the inner cavity of the supporting housing 6011. The annular body 60151 is arranged radially along the inner cavity of the supporting housing 6011, and the cross-sectional shape of the annular body 60151 matches that of the inner cavity of the supporting housing 6011. The outer annular surface of the annular body 60151 is in rolling connection with the curved inner wall of the supporting housing 6011. The filter screen 6014 is disposed on the end face of the annular body 60151 facing the inner cavity of the supporting housing 6011; the fan blades 60152 are disposed in the inner cavity of the annular body 60151, and several blades 601521 of the fan blades 60152 are connected to the inner annular surface of the annular body 60151, which are used to drive the annular body 60151 and the filter screen 6014 to rotate.

[0097] Specifically, such as Figure 1 , 2 As shown, the parts transfer module 7 is mounted on the top plate 3 and is electrically connected to an external control device.

[0098] Furthermore, such as Figure 1 , 2As shown in Figure 14, the parts transfer module 7 includes: a linear module 71, a telescopic robotic arm 72, a universal joint 73, an electromagnet 74, and a camera 75; the linear module 71 is located at the bottom of the telescopic top plate 3 and is electrically connected to the control device; the telescopic robotic arm 72 is located at the execution end of the linear module 71 and is electrically connected to the control device; the universal joint 73 is located at the execution end of the telescopic robotic arm 72; the electromagnet 74 is connected to the universal joint 73 and is electrically connected to the control device; the camera 75 is located at the bottom of the top plate 3 and is electrically connected to the control device, used to collect the position information of the automotive sheet metal parts 9 and the telescopic robotic arm 72.

[0099] Specifically, such as Figure 1 , 2 As shown, the unloading conveyor 8 is located on one side of the water tank 1. The unloading conveyor 8 is electrically connected to the control equipment and is used to unload and convey the automotive sheet metal parts 9.

[0100] Furthermore, such as Figure 1 , 2 As shown in Figure 15, the feeding conveyor device 8 includes: several supporting columns 81, a conveyor housing 82, several rollers 83, a conveyor belt 84, several pairs of assembly shafts 85, a transmission assembly, and a motor 86; the several supporting columns 81 are arranged on one side of the water tank 1; the conveyor housing 82 is arranged on top of the several supporting columns 81, the head end of the conveyor housing 82 is connected to the top port of the water tank 1, the conveyor housing 82 is inclined towards the tail end, and the top, head end, and tail end of the conveyor housing 82 are all open-designed; the several rollers 83 are arranged in parallel in the inner cavity of the conveyor housing 82, the several rollers 83 are distributed along the axial direction of the conveyor housing 82, any roller 83 is arranged along the radial direction of the conveyor housing 82, and any pair of... The distance between adjacent rollers 83 is greater than zero; several pairs of assembly shafts 85 are respectively set at both ends of several rollers 83, and any pair of assembly shafts 85 protrudes from a pair of vertical walls of the conveyor housing 82 through the outer surface of the conveyor housing 82, and the assembly shafts 85 are rotatably connected to the vertical walls of the conveyor housing 82; the transmission assembly is connected to the assembly shafts 85 and is used to drive several rollers 83 to rotate synchronously; the motor 86 is set on the vertical wall of the conveyor housing 82, the actuator end of the motor 86 is connected to any assembly shaft 85, and the motor 86 is electrically connected to the control equipment; the conveyor belt 84 is sleeved on several rollers 83, and several through holes are opened on the outer ring surface of the conveyor belt 84, any through hole penetrates the outer wall of the conveyor belt 84 and communicates with the inner cavity of the conveyor belt 84, for conveying automotive sheet metal parts 9.

[0101] Furthermore, such as Figure 15As shown, the transmission assembly includes: a plurality of sprockets 871 and a transmission chain 872; the plurality of sprockets 871 are respectively mounted on a plurality of pairs of assembly shafts 85, and the plurality of sprockets 871 are located on the same side of a plurality of roller shafts 83, for driving the plurality of roller shafts 83 to rotate; the transmission chain 872 is connected to the plurality of sprockets 871, for driving the plurality of sprockets 871 to rotate synchronously.

[0102] Furthermore, such as Figure 1 , 15 As shown, the feeding conveying device 8 also includes: a vibrator 88, which is disposed on the top of the water tank 1, connected to the bottom of the conveying housing 82, and electrically connected to the control device for striking the conveying housing 82.

[0103] The parts loading and conveying process of this device is as follows: The control equipment controls the loading and conveying device 4 to convey the automotive sheet metal part 9 to the vicinity of the water tank 1. The control equipment controls the linear module 71 to drive the telescopic robotic arm 72 to move to the output end of the loading and conveying device 4. The control equipment controls the actuator of the telescopic robotic arm 72 to drive the electromagnet 74 to extend, so that the electromagnet 74 abuts against the outer surface of the automotive sheet metal part 9. At the same time, the control equipment controls the electromagnet 74 to open, attracting the automotive sheet metal part 9. Then, the control equipment controls the actuator of the telescopic robotic arm 72 to drive the electromagnet 74 to retract, thereby lifting the automotive sheet metal part 9, and controlling the linear module 71 to drive the telescopic robotic arm 72. The electromagnet 74 and the automotive sheet metal part 9 are displaced. When the automotive sheet metal part 9 is displaced to the top of the test chamber 53, the actuator of the telescopic robotic arm 72 extends and places the automotive sheet metal part 9 upside down on top of several load-bearing components 58 in the inner cavity of the test chamber 53. The linear module 71 is controlled to drive the telescopic robotic arm 72 to displace and adjust the position of the automotive sheet metal part 9 so that the first connector 591 and the second connector 592 are aligned with the inner cavity of the automotive sheet metal part 9. At the same time, the control device turns off the electromagnet 74 and controls the telescopic robotic arm 72 to reset the electric electromagnet 74, thus completing the loading and conveying process of the automotive sheet metal part 9.

[0104] The testing process of this device on automotive sheet metal parts 9 is as follows: The control equipment controls the first air pump 595 to start and controls the electric three-way regulating valve 593 to connect the suction pipe 594, filter 601, electric three-way regulating valve 593 and first connector 591. The first air pump 595 draws air from the inner cavity of the automotive sheet metal part 9 through the suction pipe 594 and the first connector 591, creating a negative pressure environment in the inner cavity of the automotive sheet metal part 9, which adsorbs and fixes the automotive sheet metal part 9. At the same time, the second air pump 599 is turned on, and air is supplied to the automotive sheet metal part 9 through the connecting pipe 597, the distributor 596 and the second connector 592. Air is blown into the inner cavity of the sheet metal part 9, and the airflow of multiple second connectors 592 is adjusted by controlling the loading valve 600 to keep the air pressure on the automotive sheet metal part 9 within a threshold range. After the automotive sheet metal part 9 is adsorbed and fixed, the control device controls the water pump 57 to start. The water pump 57 draws the pre-stored aqueous solution in the water tank 1 into the inner cavity of the test chamber 53 through the water inlet pipe 56, ensuring that the water pumping volume of the water pump 57 is greater than or equal to the capacity of the test chamber 53, and ensuring that the water pumping volume of the water pump 57 is equal each time when testing different automotive sheet metal parts 9, because the test chamber 53 contains automotive sheet metal parts. After the water pump 57 completes the pumping of water into the metal part 9, some of the aqueous solution in the test chamber 53 will overflow into the measuring chamber. This allows the user to determine whether the metal part 9 has deformed based on the amount of aqueous solution overflowing into the measuring chamber 511, enhancing the practicality of the device. After the airtightness test of the metal part 9 is completed, the control device opens the drain valve 55, draining the aqueous solution in the measuring chamber 511 back into the water tank 1 through the drain pipe 54. After the test chamber 53 is filled with aqueous solution, because the inner cavity of the metal part 9 is always kept under negative pressure, if the weld of the metal part has poor airtightness, the aqueous solution will overflow. The pigment powder will seep into the inner cavity of the automotive sheet metal part 9 through the gap at the weld seam and adhere to the inner surface of the automotive sheet metal part 9. At this time, the user adds pigment powder into the connecting pipe 597 through the feeding funnel 598, so that it is blown into the inner surface of the automotive sheet metal part 9 by the airflow in the connecting pipe 597. This causes some of the pigment powder to dissolve in the aqueous solution adhering to the inner surface of the automotive sheet metal part 9, marking the location of the air leak in the automotive sheet metal part 9. The pigment powder floating in the inner cavity of the automotive sheet metal part 9 will eventually be extracted by the first connector 591 and filtered into the filter 601.

[0105] After the airtightness test of the automotive sheet metal part 9 is completed, the control device controls the first air pump 595 to shut down and controls the electric three-way regulating valve 593 to connect the first connector 591 with the inner cavity of the water tank 1. The second air pump 599 keeps blowing air into the inner cavity of the automotive sheet metal part 9 through the connecting hose, the distributor 596 and the second connector 592, thereby reducing the pressure on the automotive sheet metal part 9 and preventing the part transfer module 7 from deforming it when it takes out the tested automotive sheet metal part 9. At the same time, the user controls the part transfer module 7 through the control device to transfer the automotive sheet metal part 9 in the inner cavity of the test chamber 53 to the unloading conveyor device 8. The aqueous solution in the inner cavity of the test chamber 53 is finally discharged back into the inner cavity of the water tank 1 through the first connector 591 and the electric three-way regulating valve 593.

[0106] When the automotive sheet metal part 9 is attracted and fixed by the first connector 591, the first elastic element 587 and the second elastic element 588 of the bearing assembly 58 that are in contact with the inner port 91 of the automotive sheet metal part 9 are compressed, and the corresponding ball 586, slider 584 and bearing 581 sink down, sealing the edge of the inner port 91 of the automotive sheet metal part 9; at the same time, the bearing 581 of the bearing assembly 58 adjacent to the sinking bearing 581 radially limits the automotive sheet metal part 9, preventing the automotive sheet metal part 9 from being displaced due to the impact of the water flow output from the water pipe 56.

[0107] The process by which filter 601 filters the airflow flowing through the inner cavity of the housing 6011 is as follows: When the airflow blows through the filter screen 6014, the pigment powder mixed in the airflow will be filtered out on the filter screen 6014. When the airflow blows through the fan blade 60152, the fan blade 60152 drives the impeller 6015 to rotate, which in turn drives the filter screen 6014 to rotate synchronously. When the part of the filter screen 6014 carrying the pigment powder rotates into the storage cavity 6013, the pigment powder slides to the bottom of the inner cavity of the storage cavity 6013, which makes it convenient for users to collect the pigment powder, reduces the testing cost of automotive sheet metal parts 9, and prevents pigment powder from polluting the surrounding environment.

[0108] The process of conveying the tested automotive sheet metal parts 9 by the unloading conveyor device 8 is as follows: The part transfer module 7 transfers the tested automotive sheet metal parts 9 to the upper surface of the conveyor belt 84. The motor 86 drives multiple rollers 83 to rotate synchronously through the sprocket 871 and the transmission chain 872, which in turn drives the conveyor belt 84 to transport the automotive sheet metal parts 9 placed on the upper surface of the conveyor belt 84. During this process, the vibrator 88 strikes the bottom of the conveyor housing 82, causing the conveyor belt 84 to vibrate, which in turn causes the automotive sheet metal parts 9 placed on the upper surface of the conveyor belt 84 to vibrate. This causes the pigment powder adhering to the inner surface of the automotive sheet metal parts 9 to fall off and fall into the inner cavity of the conveyor housing 82 through the through holes opened on the surface of the conveyor belt 84 and the gaps between adjacent rollers 83. Finally, it slides down along the guide of the conveyor housing 82, which makes it convenient for users to collect the pigment powder particles that are not dissolved in the aqueous solution and adhere to the inner surface of the automotive sheet metal parts 9. This further saves the testing cost of this device and prevents the pigment powder from polluting the surrounding environment.

[0109] Above, refer to Figures 1-15 The present invention describes a product quality management and monitoring device for an intelligent automotive production line, which has the following advantages: The device automatically marks the location of air leakage in automotive sheet metal parts 9 through a testing module, saving labor costs and solving the problem of high labor costs in existing testing equipment. At the same time, it facilitates users to judge whether automotive sheet metal parts 9 have been deformed, and has the characteristics of strong practicality.

[0110] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0111] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A product quality management monitoring device for an automobile intelligent production line, characterized by, It comprises a water tank, a plurality of bearing columns, a top plate, an upper feeding conveying device, a lower feeding conveying device, a testing module and a part transfer module. The top of the water tank is designed in an open type, and the water tank is preloaded with an aqueous solution in the inner cavity. The plurality of bearing columns are vertically arranged on the top of the water tank. The top plate is arranged on the top of the plurality of bearing columns. The part transfer module is arranged on the top plate and electrically connected with an external control device. The lower feeding conveying device is arranged on one side of the water tank and electrically connected with the control device, for feeding and conveying the automobile sheet metal parts. The upper feeding conveying device is arranged on the other side of the water tank and electrically connected with the control device, for feeding and conveying the automobile sheet metal parts. The testing module is arranged on the water tank and electrically connected with the control device, for testing the air tightness of the automobile sheet metal parts. The testing module comprises a bearing box, a plurality of supporting feet, a testing box, a plurality of drainage pipes, a plurality of drainage valves, a water inlet pipe, a water pump, a plurality of bearing assemblies and a testing assembly. The bearing box is arranged in the inner cavity of the water tank, the top of the bearing box is designed in an open type, and a scale line is arranged on the four surrounding vertical walls in the inner cavity of the bearing box. The testing box is arranged on the inner cavity bottom plate of the bearing box, the top of the testing box is designed in an open type, and a cavity formed between the four surrounding side walls of the testing box and the four surrounding vertical walls of the inner cavity of the bearing box is a measuring cavity. The plurality of drainage pipes are arranged on the bottom of the bearing box, the water inlet end of the drainage pipe penetrates through the outer wall of the bearing box and communicates with the inner cavity of the measuring cavity, and the water outlet end of the drainage pipe communicates with the inner cavity of the water tank. The water inlet end of the water inlet pipe is connected with the water outlet end of the water pump, and the water outlet end of the water inlet pipe communicates with the inner cavity of the testing box through the top port of the testing box. The plurality of bearing assemblies are arranged on the inner cavity bottom plate of the testing box, and the plurality of bearing assemblies cover the inner cavity bottom plate of the testing box and are used for bearing the automobile sheet metal parts. The testing assembly is arranged on the water tank and communicates with the inner cavity of the automobile sheet metal parts, and is used for testing the air tightness of the welding position of the automobile sheet metal parts.

2. The product quality management monitoring device for the automobile intelligent production line according to claim 1, wherein: The plurality of supporting feet are arranged on the bottom of the bearing box and fixedly connected with the inner cavity bottom plate of the bearing box. The plurality of drainage valves are arranged on the plurality of drainage pipes respectively, and the plurality of drainage valves are electrically connected with the control device and are used for controlling the on-off of the plurality of drainage pipes. The water pump is arranged in the inner cavity of the water tank, the water inlet end of the water pump communicates with the inner cavity of the water tank, and the water pump is electrically connected with the control device.

3. The product quality management monitoring device for an intelligent production line of an automobile according to claim 1, wherein The bearing assembly comprises a bearing piece, a partition plate, a base, a sliding block, a ball-shaped groove, a ball, a first elastic piece and a second elastic piece. The bearing is a hollow quadrangular prism, the top and bottom of the bearing are designed in an open type, the side walls of the bearing of any pair of adjacent bearing assemblies are tightly fitted, the side walls of the bearing of the bearing assembly adjacent to the inner cavity vertical wall of the test box are tightly fitted to the inner cavity vertical wall of the test box, the bearing is a rubber part, used for bearing the automobile sheet metal part and sealing the periphery of the inner side port of the automobile sheet metal part; The partition plate is arranged in the inner cavity of the bearing, used for separating the inner cavity of the bearing into an upper cavity and a lower cavity; The base is axially movably arranged in the lower cavity, the side wall of the base is slidably connected to the inner wall of the lower cavity, and the bottom of the base is fixedly connected to the inner cavity bottom plate of the test box; The first elastic member is arranged in the lower cavity, and two ends of the first elastic member are respectively connected to the base and the partition plate; The sliding block is axially movably arranged in the upper cavity, and the side wall of the sliding block is slidably connected to the inner wall of the upper cavity; The second elastic member is arranged in the upper cavity, and two ends of the second elastic member are respectively connected to the sliding block and the partition plate, and the elastic force of the second elastic member is smaller than that of the first elastic member; The spherical groove is arranged on the top of the sliding block; The ball is rotatably arranged in the inner cavity of the spherical groove, the ball is matched with the shape of the inner cavity of the spherical groove, and the ball protrudes from the top surface of the sliding block.

4. The product quality management monitoring device for an intelligent production line of an automobile according to claim 3, characterized by, The test assembly comprises a first connector, a plurality of second connectors, an electric three-way regulating valve, a filter, a suction pipe, a first air pump, a flow divider, a connecting pipe, a feeding funnel, a second air pump and a feeding valve. The first connector is arranged on the inner cavity bottom plate of the test box, one end of the first connector is in communication with the inner cavity of the automobile sheet metal part, the other end of the first connector protrudes from the bottom surface of the bearing box in sequence through the inner walls of the test box and the bearing box, and the periphery of the side wall of the first connector is tightly fitted to the side wall of the bearing. The plurality of second connectors are arranged on the inner cavity bottom plate of the test box, one end of the second connector is in communication with the inner cavity of the automobile sheet metal part, the other end of the second connector protrudes from the bottom surface of the bearing box in sequence through the inner walls of the test box and the bearing box, and the periphery of the side wall of the second connector is tightly fitted to the side wall of the bearing. The electric three-way regulating valve is arranged on the inner cavity bottom plate of the water tank, the input end of the electric three-way regulating valve is connected to the other end of the first connector, the electric three-way regulating valve is electrically connected to an external control device, and any output end of the electric three-way regulating valve is in communication with the inner cavity of the water tank. The filter is arranged on the inner cavity bottom plate of the water tank, and the input end of the filter is connected to the other output end of the electric three-way regulating valve. The first air pump is arranged outside the water tank, and the first air pump is electrically connected to the control device. One end of the air suction pipe is connected with the output end of the filter, and the other end of the air suction pipe penetrates the inner wall of the water tank and is connected with the first air pump; The flow divider is arranged on the inner cavity bottom plate of the water tank, and the output ends of the flow divider are respectively connected with the other ends of the second joints; The second air pump is arranged on the outer side of the water tank, and the second air pump is electrically connected with the control device; One end of the connecting pipe is connected with the input end of the flow divider, and the other end of the connecting pipe penetrates the inner wall of the water tank and is connected with the second air pump; The feeding hopper is arranged on the side wall of the water tank, the output end of the feeding hopper penetrates the outer wall of the connecting pipe and communicates with the inner cavity of the connecting pipe, and the feeding hopper is used for putting the pigment powder into the inner cavity of the connecting pipe; The feeding valve is arranged on the connecting pipe, the feeding valve is electrically connected with the control device, and the feeding valve is used for controlling the on-off of the connecting pipe.

5. The product quality management monitoring device for an intelligent production line of an automobile according to claim 4, characterized by, The filter comprises a bearing shell, a plurality of baffles, a plurality of wind wheels and a plurality of filter screens. Both ends of the bearing shell are designed in an open type, the inner cavity of the bearing shell is in the shape of a cylinder, the head end of the inner cavity of the bearing shell is connected with the other output end of the electric three-way regulating valve, and the tail end of the inner cavity of the bearing shell is connected with one end of the air suction pipe. The plurality of baffles are arranged in parallel in the inner cavity of the bearing shell, any baffle is arranged along the radial direction of the inner cavity of the bearing shell, the baffle is semicircular, the curved side wall of the baffle is matched with the curved inner wall of the bearing shell, the curved side wall of the baffle is fixedly connected with the curved inner wall of the bearing shell, and the cavity between any pair of adjacent baffles is a storage cavity. The plurality of wind wheels are rotationally arranged in the inner cavity of the bearing shell, any wind wheel is located between any pair of adjacent baffles, the wind wheel is arranged along the radial direction of the inner cavity of the bearing shell, the wind wheel is matched with the cross-sectional shape of the inner cavity of the bearing shell, and the wheel width of the wind wheel is smaller than the axial width of the storage cavity. The plurality of filter screens are arranged on the plurality of wind wheels respectively, and are used for filtering the pigment powder mixed in the air passing through the inner cavity of the bearing shell.

6. The product quality management monitoring device for an intelligent production line of an automobile according to claim 5, wherein The wind wheel comprises a ring body and a fan blade. The ring body is circular, the ring body is arranged in the inner cavity of the bearing shell along the radial direction of the inner cavity of the bearing shell, the ring body is matched with the cross-sectional shape of the inner cavity of the bearing shell, the outer ring surface of the ring body is rollingly connected with the curved inner wall of the bearing shell, and the filter screen is arranged on the end surface of the ring body facing the head end of the inner cavity of the bearing shell. The fan blade is arranged in the inner cavity of the ring body, and a plurality of blades of the fan blade are connected with the inner ring surface of the ring body, so as to drive the ring body and the filter screen to rotate.

7. The product quality management monitoring device for an intelligent production line of an automobile according to claim 1, wherein The part transfer module comprises a linear module, a telescopic mechanical arm, a universal joint, an electromagnet and a camera. The linear module is arranged at the bottom of the telescopic top plate, and the linear module is electrically connected with the control device. The telescopic mechanical arm is arranged at the execution end of the linear module, and is electrically connected with the control device; The universal joint is arranged at the execution end of the telescopic mechanical arm; The electromagnet is connected with the universal joint, and is electrically connected with the control device; The camera is arranged at the bottom of the top plate, and is electrically connected with the control device.

8. The product quality management monitoring device for an intelligent production line of an automobile according to claim 1, wherein The downfeed conveying device comprises a plurality of support columns, a conveying housing, a plurality of roller shafts, a conveying belt, a plurality of pairs of assembly shafts, a transmission assembly and a motor. The plurality of support columns are arranged at one side of the water tank. The conveying housing is arranged at the top of the plurality of support columns, the head end of the conveying housing is connected with the top port of the water tank, the conveying housing is inclined towards the tail end of the conveying housing, and the top of the conveying housing, the head end of the conveying housing and the tail end of the conveying housing are all designed in an open type. The plurality of roller shafts are arranged in parallel in the inner cavity of the conveying housing, the plurality of roller shafts are distributed along the axial direction of the conveying housing, any roller shaft is arranged along the radial direction of the conveying housing, and the distance between any pair of adjacent roller shafts is greater than zero. The plurality of pairs of assembly shafts are arranged at the two ends of the plurality of roller shafts, any pair of assembly shafts protrude from the outer surface of the conveying housing by penetrating a pair of vertical walls of the conveying housing, and the assembly shafts are rotationally connected with the vertical walls of the conveying housing. The transmission assembly is connected with the assembly shafts, and is used to drive the plurality of roller shafts to rotate synchronously. The motor is arranged on the vertical wall of the conveying housing, the execution end of the motor is connected with any assembly shaft, and the motor is electrically connected with the control device. The conveying belt is sleeved on the plurality of roller shafts, the outer ring surface of the conveying belt is provided with a plurality of through holes, any through hole is in communication with the inner cavity of the conveying belt by penetrating the outer wall of the conveying belt, and the conveying belt is used to convey the automobile sheet metal parts.

9. The product quality management monitoring device for an intelligent production line of an automobile according to claim 8, wherein The transmission assembly comprises a plurality of sprockets and a transmission chain. The plurality of sprockets are arranged on the plurality of pairs of assembly shafts, and are located on the same side of the plurality of roller shafts, and are used to drive the plurality of roller shafts to rotate. The transmission chain is connected with the plurality of sprockets, and is used to drive the plurality of sprockets to rotate synchronously.

10. The product quality management monitoring device for an intelligent production line of an automobile according to claim 8, wherein The downfeed conveying device further comprises a vibrator, the vibrator is arranged at the top of the water tank, the vibrator is connected with the bottom of the conveying housing, the vibrator is electrically connected with the control device, and is used to knock the conveying housing.

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