Air duct sealing and performance testing production line

Abstract

The invention relates to an air duct sealing and performance test production line capable of realizing automatic performance, leakage, noise, program and the like detection before delivery for a Dassen brand air duct. Comprising a sealing element mounting station, a leakage detection station, a performance vacuum detection station, a program detection station, a sealing element dismounting station and a conveyor belt which are arranged in sequence, wherein the conveyor belt is used for connecting all the stations; and the leakage condition, the blowing performance, the working environment parameters, the working noise, the program stability and the like of the shell of the air duct are detected. The invention is suitable for the technical field of handheld electric hair driers.

Description

Technical Field

[0001] The invention relates to the technical field of handheld hair dryers, and in particular to a hair dryer sealing and performance testing production line. Background Art

[0002] Hair dryers are household appliances commonly used in daily life. They can be simply described as a combination of a group of electric heating wires and a group of high-speed small fans. After the hair dryer is powered on, the electric heating wires heat up and heat the wind blown out by the fan, so that hot air with a higher temperature can be blown out and the target can be dried. After the hair dryer is produced, it needs to undergo factory inspection, such as performance inspection, external body leakage inspection, etc. Due to the fierce competition in the electrical appliance market, in order to improve the competitiveness of the products, each manufacturer needs to not only improve the functions, but also create differentiation in the product appearance to increase consumers' purchasing desire. Therefore, for manufacturers, in order to improve the applicability of the test, either use relatively simple equipment for inspection or conduct it by manual hand-held method. No matter which method is used, there are problems of low efficiency and insufficient detection reliability. At the same time, high-end brands such as Dyson also have specific requirements for product noise, outlet temperature, inlet air flow, etc. At present, there is no hair dryer inspection equipment on the market that meets such inspection needs. Therefore, the present invention provides a wind tube sealing and performance test production line. Summary of the invention

[0003] The present invention is to make up for the deficiencies of the prior art and solve at least one problem raised in the background technology.

[0004] The technical solution adopted by the present invention is: the present invention comprises a seal installation station, a leakage detection station, a performance vacuum detection station, a program detection station, a seal removal station and a conveyor belt connecting all the above stations, which are arranged in sequence.

[0005] The seal installation station is a semi-automatic station. The front silicone seal cover and rear plunger of the air duct are installed manually, and the front silicone seal cover and rear plunger are locked and fixed on the air duct front and back by an automatic screw machine.

[0006] At the leakage detection station, place the air inlet part of the air duct connected to the power supply into the air box and the air outlet part outside the air box. After turning it on, observe the changes in the air flow and air pressure inside the air box to test the air duct for leakage.

[0007] Performance vacuum testing station, with a built-in vacuum box, the humidity, temperature and air pressure inside the vacuum box can be adjusted to test the performance, working environment and noise of the air duct;

[0008] Program testing station, to test the built-in program of the hair dryer through computer;

[0009] The seal disassembly station has a similar structure to the seal installation station. The front silicone seal cover and the rear plunger are unlocked by an automatic screw driver and then removed manually.

[0010] The conveyor belt transports the tooling with the blower from the above-mentioned workstations in sequence to complete the entire inspection process.

[0011] Furthermore, the performance vacuum testing station includes a plurality of performance testing boxes symmetrically arranged at both side ends of the conveyor belt, a lifting bracket is arranged at the bottom of the performance testing box, the lifting bracket is driven by a first lifting cylinder, a second lifting cylinder is arranged on the top of the lifting bracket, the second lifting cylinder is driven and connected to a tray, a vacuum box is arranged on the upper part of the performance testing box, an opening matching the tray is opened at the bottom of the vacuum box, a testing port is opened at the top of the vacuum box, pneumatic sealing clamps are symmetrically arranged at both ends of the testing port, and a test exhaust port and a test plug are also arranged on the top of the vacuum box.

[0012] Furthermore, the tray is also provided with a pick-up and delivery wheel set, a conversion connector, a power socket and a hair dryer positioning frame compatible with the conveyor belt. The vacuum box adopts a multi-layer structure of a metal shell, a vibration-absorbing silicone resin layer and insulating cotton. Three groups of radio microphones and a pneumatic connector compatible with the conversion connector are also arranged at the top of the inside of the vacuum box. An air intake pipe and an inspection hatch are also arranged on the outside of the vacuum box. An air intake valve is also arranged on the air intake pipe. Temperature sensors are arranged on the vacuum box and at the pipe mouth of the air intake pipe.

[0013] Furthermore, the three groups of the radio microphones are distributed in a triangular shape on the vertical axis side of the wind tube positioning frame, and the pneumatic connector is arranged on the inner wall of the vacuum box through a downward pressure cylinder.

[0014] Furthermore, the pneumatic sealing clamp includes a sealing cylinder and a clamp plate connected to the output end of the sealing cylinder, the inner end of the clamp plate is provided with an arc-shaped opening adapted to the air duct, a sealing ring is provided on the arc-shaped opening, the position of the test plug corresponds to the test port, including a J7 plug and a plug cylinder, the test exhaust port is aligned with the detection port, and an infrared camera is provided at the entrance of the test exhaust port.

[0015] Furthermore, a plurality of universal manipulators are provided on the conveyor belt at positions corresponding to the performance vacuum detection stations to grab the air ducts and place them into the tray.

[0016] Furthermore, a humidity sensor and a pressure sensor are also provided in the vacuum box.

[0017] Furthermore, the leakage detection station includes a number of leakage test boxes symmetrically arranged on both sides of the conveyor belt, a lifting cylinder is arranged at the bottom of the leakage test box, the output end of the lifting cylinder is connected to a second pallet, and a transmission belt compatible with the conveyor belt is arranged on the second pallet, an air box is arranged on the upper part of the leakage test box, a second opening compatible with the chassis for placing the air duct is opened at the bottom of the air box, a leakage detection port is arranged at the top, and second pneumatic clamps are symmetrically arranged on both sides of the leakage detection port, a limiting cylinder is also arranged on the top of the air box corresponding to the leakage detection port above the leakage detection port, a plug sealing cylinder is also arranged corresponding to the front end of the leakage detection port, and a speaker is also arranged on the side of the air box.

[0018] Furthermore, the program detection station comprises a program detection box, in which a program detection plug and a controller electrically connected to the program detection plug are arranged.

[0019] Finally, the conveyor belt adopts a double-layer structure, the upper layer is used to convey the tooling equipped with the air duct, and the lower layer is used to recycle the unused tooling. The front silicone sealing cover is provided with a detection plug compatible with the air duct PCB interface. The production line also includes a general control system and a display screen, which are used to control the seal installation station, the leakage detection station, the performance vacuum detection station, the program detection station, the seal disassembly station, and the conveyor belt, and display the detection information on the display screen.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is mainly aimed at Dyson brand hair dryer products, and a production line is designed for comprehensive detection of hair dryer leakage, performance, and working noise, etc. The production line only needs to arrange manual operation during the installation and removal of the air duct seal, and other steps can be automated, effectively improving the efficiency and reliability of hair dryer testing; in response to the quality inspection needs of Dyson products, the present invention uses the performance vacuum detection station to test and debug the performance of the hair dryer through a vacuum environment, and evaluates the ambient temperature and humidity during the test, and uses the cooperation of the speaker and the air box to detect the leakage of the product, which has significant effects and can also reduce the detection cost. Therefore, the present invention is a hair dryer sealing and performance testing production line that can meet the production and inspection requirements of Dyson hair dryer products. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a structural schematic diagram of the performance vacuum testing station;

[0023] Figure 3 is a schematic diagram of the internal structure of the vacuum box;

[0024] Figure 4 is a partial structural schematic diagram of the tray;

[0025] Figure 5 is a schematic structural diagram of the pneumatic sealing clamp;

[0026] Figure 6 is a schematic diagram of the structure of the test plug;

[0027] Figure 7 is a schematic structural diagram of the air intake pipe;

[0028] Figure 8 is a structural schematic diagram of the universal manipulator;

[0029] Fig. 9 is a structural schematic diagram of the leakage detection station;

[0030] Fig.10 is a schematic structural diagram of the second tray;

[0031] Fig.11 is a structural schematic diagram of the chassis;

[0032] Fig.12 It is a structural schematic diagram of the automatic screw driving machine;

[0033] Fig.13 It is a structural schematic diagram of the program detection station. DETAILED DESCRIPTION

[0034] like Figures 1 to 13As shown, the present invention includes a seal installation station 1, a leakage detection station 2, a performance vacuum detection station 3, a program detection station 4, a seal removal station 5 and a conveyor belt 6 connecting all the above stations. The seal installation station 1 and the seal removal station 5 have the same structure, both of which include a manual installation area and an automatic screw driving machine 9. In the seal installation station 1, the manual installation area is in front, and the staff manually installs the front silicone sealing cover 7 and the rear plunger 8 in the air duct of the wind tube 10, and then places the wind tube 10 in the tooling, and the automatic screw driving machine 9 passes the screws through the front silicone sealing cover 7 and the rear plunger 8 to fix them; in the seal removal station 5, the manual installation area and the automatic screw driving machine 9 are swapped in position, the fixing screws are first loosened by the automatic screw driving machine 9, and then the front silicone sealing cover 7 and the rear plunger 8 are manually removed from the wind tube 10; the automatic screw driving machine 9 includes a body 90, a transverse screw rod 91 horizontally arranged on the top of the body 90, and a longitudinal screw rod 93 slidably matched with the transverse screw rod 90 through a slider 92, and a pneumatic screw driving head 94 is installed on the output end of the longitudinal screw rod 93, and the screwing is automatically raised and lowered.

[0035] In the present invention, the conveyor belt 6 adopts a double-layer structure, the upper layer 61 is used to convey the tooling equipped with the wind tube 10, and the lower layer 62 is used to recycle the unused tooling. The front silicone sealing cover 7 is provided with a detection plug 70 compatible with the PCB interface of the wind tube 10. The production line also includes a general control system 11 and a display screen 12, which are used to control the seal installation station 1, the leakage detection station 2, the performance vacuum detection station 3, the program detection station 4, the seal disassembly station 5, and the conveyor belt 6, and display the detection information on the display screen 12.

[0036] The air duct 10 with the seal installed is conveyed to the corresponding area of ​​the leakage detection station 2 by the conveyor belt 6. In the present invention, a total of three groups of leakage detection stations 2 are arranged. A transverse push roller is also arranged at the position of the conveyor belt 6 corresponding to each leakage detection station 2. The transmission direction of the transverse push roller is perpendicular to the transmission direction of the conveyor belt 6. The tooling can be pushed into the second tray 23 in conjunction with the transmission belt 24. At this time, the power cord of the air duct 10 is manually inserted into the power socket of the second tray 23 to power on. The lifting cylinder 22 is started and the second tray 23 is lifted into the air duct 23. Inside the air box 20, the second push plate 23 just closes the second opening. At this time, the air duct part of the hair dryer 10 just extends out from the leakage detection port to the top of the air box 20, and the air intake port of the handle part of the hair dryer 10 still remains in the air box 20 at the bottom of the handle. The second starting clamps 26 at both ends are started and clamp the handle of the hair dryer 10, leaving only the air duct part. The only air outlet of the air box 20 is the speaker 29. When the hair dryer 10 is working, its outer shell leaks and air flows inside the air box 20, then the speaker 29 makes a sound, so as to detect whether there is a leak in the hair dryer 10.

[0037] The air duct 10 that has passed the leakage detection is returned to the conveyor belt 6 by the transmission belt 24, and is further transmitted to the area where the performance vacuum detection station 3 is located. In the present invention, four groups of performance detection groups are provided, each group is provided with four performance vacuum detection stations 3, and there are a total of 16 performance detection boxes 31. The universal mechanical arm 60 cooperates with the transfer wheel group 350 to load the workpiece into the tray 35, and the power supply of the air duct 10 is manually inserted into the power socket 352, and the power socket 352 is electrically connected to the conversion connector 351; the first lifting The cylinder 33 drives the lifting bracket 32 ​​to move up until the opening is closed. At this time, the second lifting cylinder 34 is started, driving the tray 35 to continue to move up until the air duct part of the air duct 10 extends from the detection port to the outside of the vacuum box 31 and stops. At this time, the pneumatic connector 301 is naturally inserted into the conversion connector 351 for connection under the action of the downward pressure cylinder 305. The sealing cylinder 36 is started to drive the clamp plate 37 to move and clamp the bottom of the handle of the air duct 10. At this time, the handle part of the air duct 10 remains in the vacuum box 31, and the air duct part extends to the bottom of the vacuum box 31. Outside the vacuum box 31, the plug cylinder 307 is started, and the J7 plug 306 is inserted into the detection plug 70 on the front silicone sealing cover 7. In the present invention, the vacuum box 31 adopts a multi-layer structure of a metal shell, a vibration-absorbing silicone resin layer, and insulating cotton. The environmental data is monitored by a temperature sensor, a humidity sensor, and a pressure sensor arranged inside. The wind tube 10 is started, and the working sound of the wind tube 10 is monitored by the three groups of the radio microphones 300 to determine whether its working noise is qualified. The three groups of the radio microphones 300 are distributed in a triangle, annular The sound reception improves the accuracy of equipment detection; the infrared camera 309 arranged in the test exhaust port 308 can monitor the temperature of the air outlet area of ​​the air duct 10, detect the performance of the air duct 10, collect and analyze the chip data of the working air duct 10 through the conversion connector 351 and the test plug, and judge whether the performance of the air duct 10 is qualified; through the opening and closing of the air intake valve 304, the pressure value in the vacuum box 30 is adjusted by the air intake pipe 302, the extreme working environment of the air duct 10 is debugged, and the environmental factors affecting the working condition of the air duct 10 are judged.

[0038] The air duct 10 that has completed the performance test is returned to the conveyor belt by the pick-up wheel group 350 and continued to be conveyed to the area where the program detection station 4 is located. In the present invention, three groups of program detection stations 4 are provided, and their structures are roughly consistent with the leakage detection station 2, except that the air box 20 is missing. When the tooling is conveyed to the program detection box 40, the program detection plug 41 is inserted into the detection plug 70 under the action of the cylinder, and the controller detects the internal program of the air duct 10 to see whether the program is normal after multiple rounds of testing. The normal air duct 10 continues to be conveyed to the seal disassembly station 5 to disassemble the front silicone sealing cover 7 and the rear plunger 8 and put them into the inner box of the package. If there is an error in the program, it will be transferred to the NG area via the NG conveyor belt to wait for the next maintenance. After the maintenance is completed, the above-mentioned detection process is repeated.

[0039] Due to the use of a double-layer conveyor belt structure, the empty tooling after disassembly in the seal disassembly station 5 is returned to the seal installation station 1 via the lower layer 62 structure of the conveyor belt 6, waiting for the next round of use. A simulated holding bracket and a power socket are also provided on the tooling. In the present invention, a judgment module is provided in the tray 35 and the second tray 23 to determine whether there is a wind tube 10 transmitted to the detection station, thereby activating the first lifting cylinder 33, the second lifting cylinder 34 or the lifting cylinder 22. The judgment module can adopt an infrared detection module, a weighing module, a mechanical trigger module, etc.

[0040] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A production line for testing the sealing and performance of a duct, characterized by: The invention comprises a sealing component installation station (1), a leakage detection station (2), a performance vacuum detection station (3), a program detection station (4), a sealing component removal station (5) and a conveyor belt (6) connecting all the above stations. The sealing component installation station (1) is a semi-automatic station, and the front silicone sealing cover (7) and the rear plunger (8) of the air duct are installed manually, and the front silicone sealing cover (7) and the rear plunger (8) are locked and fixed on the air duct front and back by an automatic screwing machine (9); The leakage detection station (2) places the air inlet portion of the air duct (10) connected to a power source into the air box (20) and places the air outlet portion outside the air box (20). After turning it on, the air flow and air pressure changes inside the air box (20) are observed to perform a leakage test on the air duct (10); A performance vacuum testing station (3) is provided with a built-in vacuum box (30), wherein the humidity, temperature and air pressure inside the vacuum box (30) are adjustable, and the performance, working environment and noise of the air duct (10) are tested; A program detection station (4) detects the built-in program of the air duct (10) through a computer; The seal disassembly station (5) is similar in structure to the seal installation station (1). The front silicone seal cover (7) and the rear plunger (8) are unlocked by an automatic screw driver (9) and then removed manually. The conveyor belt (6) conveys the tooling with the air duct (10) from the above stations in sequence to complete the entire inspection process.

2. The air duct sealing and performance testing production line according to claim 1, characterized in that: The performance vacuum testing station (3) comprises a plurality of performance testing boxes (31) symmetrically arranged at both sides of the conveyor belt (6); a lifting bracket (32) is arranged at the bottom of the performance testing box (31); the lifting bracket (32) is driven by a first lifting cylinder (33); a second lifting cylinder (34) is arranged at the top of the lifting bracket (32); the second lifting cylinder (34) is driven and connected to a tray (35); a vacuum box (30) is arranged at the top of the performance testing box (31); an opening matching the tray (35) is provided at the bottom of the vacuum box (30); a testing port is provided at the top of the vacuum box (30); pneumatic sealing clamps are symmetrically arranged at both ends of the testing port; a test exhaust port (308) and a test plug are also provided at the top of the vacuum box (30).

3. The air duct sealing and performance testing production line according to claim 2 is characterized in that: The tray (35) is also provided with a transfer wheel group (350) adapted to the conveyor belt (6), a conversion connector (351), a power socket (352) and a wind tube positioning frame (353); the vacuum box (30) adopts a multi-layer structure of a metal shell, a vibration-absorbing silicone resin layer and insulating cotton; three groups of sound-receiving microphones (300) and a pneumatic connector (301) adapted to the conversion connector (351) are also provided at the top of the interior of the vacuum box (30); an air intake pipe (302) and an inspection hatch (303) are also provided on the outside of the vacuum box (30); an air intake valve (304) is also provided on the air intake pipe (302); and temperature sensors are provided on the vacuum box (30) and at the pipe mouth of the air intake pipe (302).

4. The air duct sealing and performance testing production line according to claim 3 is characterized in that: The three groups of sound receiving microphones (300) are distributed in a triangular shape on the vertical axis side of the wind tube positioning frame (353), and the pneumatic connector (301) is arranged on the inner wall of the vacuum box (30) through a downward pressure cylinder (305).

5. The air duct sealing and performance testing production line according to claim 2 is characterized in that: The pneumatic sealing clamp comprises a sealing cylinder (36) and a clamp plate (37) connected to the output end of the sealing cylinder (36); the inner end of the clamp plate (37) is provided with an arc-shaped opening (38) adapted to the air cylinder (10); a sealing ring (39) is provided on the arc-shaped opening (38); the position of the test plug corresponds to the test port, and comprises a J7 plug (306) and a plug cylinder (307); the position of the test exhaust port (308) is aligned with the detection port; and an infrared camera (309) is provided at the entrance of the test exhaust port (308).

6. The air duct sealing and performance testing production line according to claim 2 is characterized in that: A plurality of universal manipulators (60) are also arranged on the conveyor belt (6) at positions corresponding to the performance vacuum detection stations (3) to grab the air cylinder (10) and place it into the tray (35).

7. The air duct sealing and performance testing production line according to claim 2 is characterized by: A humidity sensor and a pressure sensor are also provided in the vacuum box (30).

8. The air duct sealing and performance testing production line according to claim 1, characterized in that: The leakage detection station (2) comprises a plurality of leakage test boxes (21) symmetrically arranged at both sides of the conveyor belt (6); a lifting cylinder (22) is arranged at the bottom of the leakage test box (21); a second tray (23) is connected to the output end of the lifting cylinder (22); a transmission belt (24) adapted to the conveyor belt (6) is arranged on the second tray (23); an air box (20) is arranged on the upper part of the leakage test box (21); a second opening adapted to a chassis (25) for placing an air duct (10) is opened at the bottom of the air box (20); a leakage detection port is arranged at the top; second pneumatic clamps (26) are symmetrically arranged on both sides of the leakage detection port; a limit cylinder (27) is arranged at the top of the air box (20) corresponding to the upper side of the leakage detection port; a plug sealing cylinder (28) is arranged corresponding to the front end of the leakage detection port; and a speaker (29) is arranged on the side of the air box (20).

9. The air duct sealing and performance testing production line according to claim 1, characterized in that: The program detection station (4) comprises a program detection box (40), in which a program detection plug (41) and a controller electrically connected to the program detection plug (41) are arranged.

10. The air duct sealing and performance testing production line according to claim 1, characterized in that: The conveyor belt (6) adopts a double-layer structure, the upper layer (61) is used to convey the tooling equipped with the air duct (10), and the lower layer (62) is used to recycle the unused tooling. The front silicone sealing cover (7) is provided with a detection plug (70) adapted to the PCB interface of the air duct (10). The production line also includes a general control system (11) and a display screen (12), which are used to control the seal installation station (1), the leakage detection station (2), the performance vacuum detection station (3), the program detection station (4), the seal removal station (5), and the conveyor belt (6), and display the detection information on the display screen (12).

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