Reel half-automated assembly line and control method thereof

Abstract

The application relates to a retractor semi-automatic assembly line and a control method thereof, and belongs to the technical field of retractor assembly equipment. The retractor semi-automatic assembly line comprises a conveying line, and support plate marking assemblies, screw shaft locking and oiling assemblies, cover plate pressing assemblies and inner cover pressing and balancing assemblies are sequentially arranged on the side edges of the conveying line. The support plate marking assemblies comprise a push-in pressing device, and a roller oiling station is arranged at the front end of the push-in pressing device. The screw shaft locking and oiling assemblies comprise a screw shaft height measuring station, a screw shaft locking station is arranged on the side edge of the screw shaft height measuring station, and a main body oiling station I is arranged at the front end of the screw shaft height measuring station. The cover plate pressing assemblies comprise a grabbing station, a pressing station is arranged on the grabbing station, and a main body oiling station II is arranged at the front end of the grabbing station. The inner cover pressing and balancing assemblies comprise a pressing tool, a CP height detection station is arranged at the front end of the pressing tool, and a balancer pressing station is arranged at the rear end of the pressing tool. The retractor semi-automatic assembly line adopts multiple stations to realize the integration of oiling, assembly pressing and detection, and realizes a retractor semi-automatic assembly process.

Description

Technical Field

[0001] This invention relates to the field of winder assembly equipment technology, and more specifically to a semi-automatic winder assembly line and its control method. Background Technology

[0002] Seat belts have always been installed in vehicle seats to restrain occupants in emergency situations such as sudden braking or collisions, preventing them from being thrown forward due to inertia. The seat belt system includes a retractor located behind or within the seat back. The retractor releases the webbing (seat belt) in an emergency and simultaneously winds it up using rotational force. Therefore, even during normal movement, the webbing remains secure and close to the occupant's body.

[0003] The webbing is actually wound up by a spindle mounted on the retractor. This spindle is supported and can rotate freely around its axis, using a winding spring mechanism on the retractor or the force of a spring such as an electric motor to wind up the webbing. In the event of a collision or other severe impact, a pretensioner on the retractor locks the webbing out, restraining the occupants.

[0004] The retractor consists of bushings, outer frame, rollers, shaft, bushing, rack guide block A, rack stop block, rack guide block B, counterweight body, locking plate, retracting mechanism, screws, ratchet, balancer, and pins. A pin is a metallic material used in connectors to conduct electricity (signals).

[0005] The prior art, "A Seatbelt Retractor Assembly Machine," application number CN202022294800.2, discloses a machine base; a mechanical cover riveting assembly; a noise-canceling spring mounting assembly; a camera detection assembly for detecting whether the noise-canceling spring is installed accurately; a cover pressing assembly; and a cover riveting assembly. The mechanical cover riveting assembly, the noise-canceling spring mounting assembly, the camera detection assembly, the cover pressing assembly, and the cover riveting assembly are sequentially arranged on the machine base. The machine base is provided with a conveyor table for transferring the seatbelt retractor to be assembled between the various components.

[0006] With industrial development, automated winding assembly has become an essential process. However, with rising labor costs, designing semi-automated winding assembly equipment presents a significant challenge. While similar equipment exists on the market, it often suffers from complex structures, immature processes, and a lack of component oiling processes in existing technologies. Therefore, a simple and stable semi-automated winding assembly line is urgently needed. Summary of the Invention

[0007] This invention addresses the shortcomings of existing technologies by providing a semi-automatic retractor assembly line and its control method. This line boasts advantages such as compact structure, time and labor savings, high efficiency, and good operational stability. It solves the problems of retractor assembly and testing. A multi-station system integrates oiling, assembly pressing, and testing, achieving a semi-automated retractor assembly process.

[0008] The above-mentioned technical problems of the present invention are mainly solved by the following technical solutions:

[0009] A semi-automatic assembly line for a retractor includes a conveyor line, on the side of which are sequentially provided a support plate engraving assembly, a screw shaft locking and oiling assembly, a cover plate pressing assembly, and an inner cover pressing and balancing assembly.

[0010] The support plate engraving assembly includes a push-in press, and the front end of the push-in press is provided with a roller oiling station.

[0011] The screw shaft locking and oiling assembly includes a screw shaft height measuring station, a screw shaft locking station on the side of the screw shaft height measuring station, and a main body oiling station I at the front end of the screw shaft height measuring station.

[0012] The cover plate pressing assembly includes a gripping station, a pressing station on the gripping station, and a main body oiling station II at the front end of the gripping station.

[0013] The inner cover pressing and balancing assembly includes a pressing fixture, the front end of which is provided with a CP height detection station, and the rear end of which is provided with a balancer pressing station.

[0014] Preferably, a height detection station after screw fastening is provided between the inner cover pressing and balancing assembly and the cover plate pressing assembly. The height detection station after screw fastening includes a tightening height measurement station, and a secondary positioning station is provided at the front end of the tightening height measurement station.

[0015] Preferably, a ratchet springback detection component is provided between the screw fastening height detection station and the inner cover pressing balance component, and the ratchet springback detection component includes a ratchet springback detection station.

[0016] Preferably, the roller oiling station has a shaft detection station on its side that is connected and fixed to the push-in press. The roller oiling station includes an oiling cylinder, and a roller oiler is provided at the front end of the oiling cylinder.

[0017] Preferably, the conveyor line has an "L"-shaped right-angle bend structure, and a conveyor deflector installed at the right-angle bend of the conveyor line is provided between the cover plate pressing assembly and the screw shaft locking and oiling assembly.

[0018] Preferably, the conveying steering device includes a rotary station, on which an ejection cylinder is provided.

[0019] A control method for a semi-automatic assembly line for a retractor includes the following steps:

[0020] Step 1: Place the bushing and outer frame onto the tooling trolley on the conveyor line. The tooling trolley enters the support plate engraving assembly. Take the roller and place it into the roller oiling station. Place the shaft into the shaft inspection station. Place the inspected shaft into the tooling trolley fixture. Then, take the oiled roller and assemble it with the shaft. Next, take the bushing and assemble it with the roller. Take the drive plate and assemble it with the shaft. Take the rack guide block A and rack stop block and assemble them together. Then, pre-tighten them with the outer frame assembly. Press down the rack guide block A under the cylinder of the press.

[0021] Step 2: The tooling trolley moves to the screw shaft locking and oiling assembly, takes the rack guide block B and the counterweight body and places them in the main body oiling station II. The oiled rack guide block B and the counterweight body are taken out and assembled with the outer frame. After assembly, the screw shaft is pre-locked with the counterweight body. The screw shaft is locked at the screw shaft locking station. Then, the height is measured by GT at the screw shaft height measuring station.

[0022] Step 3: The conveyor line pushes the tooling trolley to the cover plate pressing assembly, takes the locking plate and assembles it with the winding mechanism, and at the main body oiling station II, the cylinder drives the oiling gun to apply oil to the locking plate and the counterweight body respectively. After the oiling is completed, the gripping station grips the locking plate and places it on the main body module. The moving tooling is then moved to the pressing station for pressing.

[0023] Step 4: The conveyor line moves the tooling trolley to the inner cover pressing and balancing assembly. The balancer assembly is placed in the CP height detection station to check the balancer height. After the detection is completed, the operator assembles the balancer with the workpiece, and then pushes in the pressing tooling to cooperate with the balancer pressing station. The balancer pressing station first presses the balancer tightly, and then the balancer pressing station moves back. One set of two cylinders of the pressing tooling first descends to position the pin and insert the product positioning pin, and then the second set of large cylinders descends to press the pin into the product, and the action ends.

[0024] Preferably, the shaft detection station has a photoelectric sensor to detect the presence or absence of the shaft, a laser sensor to detect the shaft, a set of photoelectric sensors on the side of the roller oiling station to detect the presence or absence of the roller, and an oiling cylinder to pull the roller oiler into the oiling station. The cylinder on the roller oiler drives the oiling gun to descend and apply oil to the roller.

[0025] Preferably, after the cover plate pressing assembly is completed, at the height detection station after screw fastening, three positioning pins at the secondary positioning station are used to position and press the product shell. After positioning, the suction pin is tightened at the height measurement station. After tightening, the trolley moves forward to the height measurement GT position to perform screw height measurement. Then, at the ratchet springback detection station of the ratchet springback detection assembly, the cylinder inserts the positioning pin into the ratchet combination rotary cylinder to rotate the ratchet for inspection.

[0026] The present invention can achieve the following effects:

[0027] This invention provides a semi-automatic assembly line for retractors and its control method. Compared with existing technologies, it has the advantages of compact structure, time and labor saving, high efficiency, and good operational stability. It solves the problems of retractor assembly and inspection. It realizes semi-automatic assembly of finished seat belt retractors, reduces manual assembly, promptly removes defective products, prevents defective products from entering the market, improves the assembly quality and efficiency of finished seat belt retractors, meets the huge market demand, and has good market application value.

[0028] (1) Each workstation can assemble products in the simplest and fastest way, so each workstation has error prevention and inspection mechanisms to prevent human error.

[0029] (2) Previously, the production line required six people to operate. With this semi-automatic assembly line, only two people are needed, saving a lot of labor costs and greatly improving the accuracy of product production, which is something that most production lines cannot do at present. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention.

[0031] Figure 2 This is a schematic diagram of the support plate engraving assembly of the present invention.

[0032] Figure 3 This is a schematic diagram of the screw shaft locking oiling assembly of the present invention.

[0033] Figure 4 This is a schematic diagram of the cover plate pressing assembly of the present invention.

[0034] Figure 5 This is a schematic diagram of the height detection station after screw fastening according to the present invention.

[0035] Figure 6 This is a schematic diagram of the ratchet springback detection component of the present invention.

[0036] Figure 7 This is a schematic diagram of the inner cover pressing and balancing assembly of the present invention.

[0037] Figure 8 This is a schematic diagram of the conveyor steering device of the present invention.

[0038] Figure 9 This is a schematic diagram of the structure of the roller oiling station of the present invention.

[0039] Figure 10 This is a schematic diagram of the secondary positioning station of the present invention.

[0040] Figure 11 This is a schematic diagram of the rotating station of the present invention.

[0041] In the diagram: 1. Inner cover pressing and balancing assembly; 2. Ratchet springback detection assembly; 3. Screw fastening height detection station; 4. Cover plate pressing assembly; 5. Conveyor steering mechanism; 6. Screw shaft fastening oiling assembly; 7. Support plate engraving assembly; 8. Conveyor line; 9. Push-in presser; 10. Roller oiling station; 11. Shaft detection station; 12. Screw shaft height measurement station; 13. Screw shaft fastening station; 14. Main body oiling station I; 15. Gripping station; 16. Pressing station; 17. Main body oiling station II; 18. Tightening height measurement station; 19. Secondary positioning station; 20. Ratchet springback detection station; 21. Balancer pressing station; 22. Pressing fixture; 23. CP height detection station; 24. Rotation station; 25. Push-out cylinder; 26. Roller oiler; 27. Oiling cylinder. Detailed Implementation

[0042] The technical solution of the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0043] Example: As shown in Figures 1-11, a semi-automatic assembly line for a retractor includes a conveyor line 8. A support plate marking assembly 7, a screw shaft locking and oiling assembly 6, a cover plate pressing assembly 4, and an inner cover pressing and balancing assembly 1 are sequentially arranged on the side of the conveyor line 8. The conveyor line 8 has an "L"-shaped right-angle bend structure. A conveyor deflector 5 is installed at the right-angle bend of the conveyor line 8 between the cover plate pressing assembly 4 and the screw shaft locking and oiling assembly 6. The conveyor deflector 5 includes a rotating station 24, on which a push-out cylinder 25 is provided. A screw-locking height detection station 3 is provided between the inner cover pressing and balancing assembly 1 and the cover plate pressing assembly 4. The screw-locking height detection station 3 includes a tightening height measurement station 18, and a secondary positioning station 19 is provided at the front end of the tightening height measurement station 18. A ratchet springback detection assembly 2 is provided between the screw-locking height detection station 3 and the inner cover pressing and balancing assembly 1. The ratchet springback detection assembly 2 includes a ratchet springback detection station 20. The support plate engraving assembly 7 includes a push-in presser 9, with a roller oiling station 10 at its front end and a shaft detection station 11 connected and fixed to the push-in presser 9 on its side. The roller oiling station 10 includes an oiling cylinder 27, with a roller oiler 26 at its front end. The screw shaft locking oiling assembly 6 includes a screw shaft height measuring station 12, with a screw shaft locking station 13 on its side and a main body oiling station I 14 at its front end. The cover plate pressing assembly 4 includes a gripping station 15, with a pressing station 16 on the gripping station 15 and a main body oiling station II 17 at its front end. The inner cover pressing and balancing assembly 1 includes a pressing fixture 22, with a CP height detection station 23 at its front end and a balancer pressing station 21 at its rear end.

[0044] A control method for a semi-automatic assembly line for a retractor includes the following steps:

[0045] Step 1: Place the bushing and outer frame onto the tooling trolley on the conveyor line 8. The tooling trolley enters the support plate engraving assembly 7. Take the roller and place it into the roller oiling station 10. Place the shaft into the shaft inspection station 11. Place the inspected shaft into the tooling trolley fixture. Then take the oiled roller and shaft assembly. Next, take the bushing and roller assembly. Take the drive plate and shaft assembly. Take the rack guide block A and rack stop block assembly and pre-tighten it with the outer frame assembly. Press the rack guide block A under the cylinder of the presser 9.

[0046] The shaft detection station 11 has a photoelectric sensor to detect the presence or absence of the shaft, and a laser sensor to detect the shaft. The roller oiling station 10 has a set of photoelectric sensors on the side to detect the presence or absence of the roller. The oiling cylinder 27 pulls the roller oiler 26 into the oiling station. The cylinder on the roller oiler 26 drives the oiling gun to descend and apply oil to the roller.

[0047] Step 2: The tooling trolley moves to the screw shaft locking and oiling assembly 6, takes the rack guide block B and the counterweight body and places them in the main body oiling station II 17. The oiled rack guide block B and the counterweight body are taken out and assembled with the outer frame. After the assembly is completed, the screw shaft is pre-locked with the counterweight body. The screw shaft is locked at the screw shaft locking station 13. Then, the height is measured by GT at the screw shaft height measuring station 12.

[0048] Step 3: Conveyor line 8 pushes the tooling trolley to the cover plate pressing assembly 4, takes the locking plate and attaches it to the winding mechanism, and at the main body oiling station II 17, the cylinder drives the oiling gun to apply oil to the locking plate and the counterweight body respectively. After the oiling is completed, the gripping station 15 grips the locking plate and places it on the main body module. The moving tooling is then moved to the pressing station 16 for pressing.

[0049] After the cover plate pressing assembly 4 is completed, at the height detection station 3 after screw fastening, the three positioning pins of the secondary positioning station 19 are used to position and press the product shell. After positioning, the suction pin is tightened at the height measurement station 18. After tightening, the trolley moves forward to the lower position of the height measurement GT to perform the screw height measurement action. Then, at the ratchet springback detection station 20 of the ratchet springback detection assembly 2, the cylinder inserts the positioning pin into the ratchet combination rotary cylinder to rotate the ratchet for inspection.

[0050] Step 4: Conveyor line 8 moves the tooling trolley to the inner cover pressing and balancing assembly 1, takes the balancer assembly and places it into the CP height detection station 23 to detect the balancer height. After the detection is completed, the operator assembles the balancer with the workpiece, and then pushes in the pressing tool 22 to cooperate with the balancer pressing station 21. The balancer pressing station 21 first presses the balancer tightly, and then the balancer pressing station 21 moves backward. One set of two sets of cylinders of the pressing tool 22 first descends to position the pin and insert the product positioning pin, and then the second set of large cylinders descends to press the pin into the product, and the action ends.

[0051] In summary, this semi-automatic retractor assembly line and its control method have the advantages of compact structure, time and labor saving, high efficiency, and good operational stability. It solves the problems of retractor assembly and inspection. It realizes semi-automatic assembly of finished seat belt retractors, reduces manual assembly, promptly removes defective products, prevents defective products from entering the market, improves the assembly quality and efficiency of finished seat belt retractors, meets the huge market demand, and has good market application value.

[0052] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A control method for a semi-automatic assembly line of a retractor, characterized in that... The following steps are included: Step 1: Place the bushing and outer frame onto the tooling trolley on the conveyor line (8), the tooling trolley enters the support plate engraving assembly (7), take the roller and put it into the roller oiling station (10), put the shaft into the shaft inspection station (11), put the inspected shaft into the tooling trolley fixture, then take the oiled roller and shaft assembly, then take the bushing and roller assembly, take the drive plate and shaft assembly, take the rack guide block A and rack stop block assembly and pre-tighten it with the outer frame assembly, and press the rack guide block A under the cylinder of the presser (9); Step 2: The tooling trolley moves to the screw shaft locking and oiling assembly (6), takes the rack guide block B and the counterweight body and places them in the main body oiling station II (17). The oiled rack guide block B and the counterweight body are taken out and assembled with the outer frame. After the assembly is completed, the screw shaft is pre-locked with the counterweight body. The screw shaft is locked at the screw shaft locking station (13). Then, the height is measured at the screw shaft height measuring station (12) using GT. Step 3: The conveyor line (8) pushes the tooling trolley to the cover plate pressing assembly (4), takes the locking plate and attaches it to the winding mechanism, and at the main body oiling station II (17), the cylinder drives the oiling gun to apply oil to the locking plate and the counterweight body respectively. After the oiling is completed, the gripping station (15) grips the locking plate and places it on the main body module. The moving tooling is moved to the pressing station (16) for pressing. After the cover plate pressing assembly (4) is completed, at the height detection station (3) after screw fastening, the three positioning pins of the secondary positioning station (19) are used to position and press the product shell. After positioning, the suction pin is used to tighten the product cover at the height measurement station (18). After tightening, the trolley moves forward to the height measurement GT position to perform screw height measurement. Then, at the ratchet springback detection station (20) of the ratchet springback detection assembly (2), the cylinder inserts the positioning pin into the ratchet combination rotary cylinder to rotate the ratchet for inspection. Step 4: The conveyor line (8) moves the tooling trolley to the inner cover pressing and balancing assembly (1), takes the balancer assembly and puts it into the CP height detection station (23) to detect the balancer height. After the detection is completed, the operator assembles the balancer with the workpiece, and then pushes in the pressing tool (22) to cooperate with the balancer pressing station (21). The balancer pressing station (21) first presses the balancer tightly, and then the balancer pressing station (21) moves back. The two sets of cylinders of the pressing tool (22) first descend to position the pin and insert the product positioning pin, and then the second set of large cylinders descends to press the pin into the product and the action ends.

2. The control method for a semi-automatic retractor assembly line according to claim 1, characterized in that: The shaft detection station (11) has a photoelectric sensor to detect the presence or absence of the shaft, a laser sensor to detect the shaft, and a set of photoelectric sensors on the side of the roller oiling station (10) to detect the presence or absence of the roller. The oiling cylinder (27) pulls the roller oiler (26) into the oiling station, and the cylinder on the roller oiler (26) drives the oiling gun to descend and apply oil to the roller.

3. The control method for a semi-automatic retractor assembly line according to claim 1, characterized in that: The semi-automatic assembly line for the retractor includes a conveyor line (8), and the side of the conveyor line (8) is provided with a support plate engraving assembly (7), a screw shaft locking and oiling assembly (6), a cover plate pressing assembly (4), and an inner cover pressing and balancing assembly (1). The support plate engraving assembly (7) includes a push-in press (9), and the front end of the push-in press (9) is provided with a roller oiling station (10). The screw shaft locking and oiling assembly (6) includes a screw shaft height measuring station (12), a screw shaft locking station (13) is provided on the side of the screw shaft height measuring station (12), and a main body oiling station I (14) is provided at the front end of the screw shaft height measuring station (12). The cover plate pressing assembly (4) includes a gripping station (15), a pressing station (16) is provided on the gripping station (15), and a main body oiling station II (17) is provided at the front end of the gripping station (15). The inner cover pressing and balancing assembly (1) includes a pressing fixture (22), the front end of which is provided with a CP height detection station (23), and the rear end of which is provided with a balancer pressing station (21).

4. The control method for a semi-automatic retractor assembly line according to claim 3, characterized in that: The inner cover pressing and balancing assembly (1) and the cover plate pressing assembly (4) are provided with a screw fastening height detection station (3). The screw fastening height detection station (3) includes a tightening height measurement station (18). The front end of the tightening height measurement station (18) is provided with a secondary positioning station (19).

5. The semi-automatic assembly line for the retractor according to claim 4, characterized in that: A ratchet springback detection assembly (2) is provided between the screw fastening height detection station (3) and the inner cover pressing balance assembly (1), and the ratchet springback detection assembly (2) includes a ratchet springback detection station (20).

6. The control method for a semi-automatic retractor assembly line according to claim 5, characterized in that: The roller oiling station (10) has a shaft detection station (11) on its side that is connected and fixed to the push-in press (9); the roller oiling station (10) includes an oiling cylinder (27), and the front end of the oiling cylinder (27) is provided with a roller oiler (26).

7. The control method for a semi-automatic retractor assembly line according to claim 3, characterized in that: The conveyor line (8) has an "L"-shaped right-angle bend structure, and a conveyor deflector (5) is installed at the right-angle bend of the conveyor line (8) between the cover plate pressing assembly (4) and the screw shaft locking oiling assembly (6).

8. The control method for a semi-automatic retractor assembly line according to claim 7, characterized in that: The conveying steering device (5) includes a rotating station (24), on which a push-out cylinder (25) is provided.

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