Automobile seat angle adjuster center shaft assembly and fixing disc assembling equipment

Abstract

The present application belongs to the technical field of automobile seat angle adjuster production, in particular to a kind of automobile seat angle adjuster center shaft assembly and fixed disc assembly equipment, including base;The cam and spring taking and placing mechanism are provided on the base, and the cam and spring taking and placing mechanism are used to take material of cam and spring and place on fixed disc;Make the sliding frame slide by the gear rack mechanism driven by No.2 servo motor, the taking end of pneumatic taking and placing head extends into the center shaft cam inside, the center shaft cam is picked up by No.1 air pump ventilation support, the sliding frame moves the center shaft cam to above spring, the taking and placing head slides again, and the spring is pressed to the center shaft cam by press fitting mechanism, the taking and placing head reaches above fixed disc and slides again, and the center shaft cam and spring assembly are inserted into fixed disc, and No.1 servo motor driven assembly is rotated and clamped in place, and a group of moving mechanisms continuously complete picking of cam, spring press fitting and fixed disc assembly, replace traditional manual and multiple addressing of mechanical hand, improve the efficiency of production.

Description

Technical Field

[0001] This invention belongs to the field of automotive seat adjuster manufacturing technology, specifically an assembly device for an automotive seat adjuster central shaft assembly and a fixing plate. Background Technology

[0002] The car seat adjuster is a core metal component installed at the connection between the seat back and the seat cushion. It is usually composed of precision stamped parts such as inner and outer toothed plates, guide plates, and springs. Its main function is to realize graded or stepless adjustment of the backrest angle and reliably lock it, allowing passengers to adjust to a comfortable position according to different sitting posture needs. In the event of a vehicle collision, the adjuster must also have sufficient impact resistance to prevent the backrest from accidentally folding or falling backward, thereby ensuring the safety of the passengers. Its performance directly determines the smoothness of seat adjustment, the reliability of locking, and the overall safety level of the vehicle.

[0003] Traditionally, the assembly of the central shaft assembly, cam, and fixed plate of a car seat adjuster relies mainly on skilled manual operation and simple tools. The worker first manually installs the spring onto the cam of the central shaft, then inserts the central shaft into the housing hole, visually aligns the keyway of the cam with the positioning point of the fixed plate, taps the cam into the shaft end with a small hammer, and simultaneously checks the assembly height and fit clearance with calipers and plug gauges. When encountering parts with large interference, the worker needs to repeatedly tap and adjust them, and manually rotate the cam to test the smoothness. The entire process is highly dependent on personal experience and attention, which not only results in a slow assembly pace but also easily leads to problems such as cam phase misalignment.

[0004] With the development of the times, automated assembly equipment has emerged. The assembly equipment for the central shaft assembly, cam and fixed plate of the car seat adjuster is a special production line. The equipment uses a robotic arm to sequentially grab the cam, spring and fixed plate of the central shaft into the positioning fixture, and then uses servo press fitting to assemble them in sequence. It is necessary to ensure that the rotation phase of the cam matches the positioning hole of the fixed plate.

[0005] The assembly of the central shaft assembly and fixing plate of the car seat adjuster is a crucial step in determining the seat's performance and lifespan. Traditional assembly equipment typically uses a robotic arm as the main actuator to pick up and place multiple parts during the assembly of the central shaft assembly and fixing plate of the car seat adjuster. In this process, the robotic arm needs to pick up individual parts one by one and move them to the positioning position, and then use a servo pressing mechanism to press and fix them. Since the robotic arm has to repeat the addressing and positioning process every time it picks up and places a part, although this method ensures the precise installation of each part, the overall assembly efficiency is easily affected.

[0006] Therefore, the present invention provides an assembly device for a central shaft assembly and a fixing plate of an automotive seat adjuster. Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0008] The technical solution adopted by this invention to solve its technical problem is as follows: An assembly device for a car seat adjuster center shaft assembly and a fixed plate, comprising a base; a cam and spring picking and placing mechanism is provided on the base, the cam and spring picking and placing mechanism being used to pick up cams and springs and place them on the fixed plate; the cam and spring picking and placing mechanism includes a fixed frame, a first fixed guide rail, a sliding frame, a vertical moving frame, a first servo motor, and a pneumatic picking and placing head; the fixed frame is fixedly connected to the base; the first fixed guide rail is fixedly connected to the fixed frame; the sliding frame is slidably connected to the first fixed guide rail, and the sliding frame is driven by a second servo motor in conjunction with a gear and rack mechanism; the vertical moving frame is slidably connected to the sliding frame via a transmission electric cylinder; the first servo motor is fixedly connected to the output end of the vertical moving frame; the pneumatic picking and placing head is fixedly connected to the output end of the first servo motor; a pressing mechanism is provided on the base, the pressing mechanism being used to press the springs onto the center shaft assembly.

[0009] Preferably, the pressing mechanism includes a first cylinder, a fixed plate, a stamping plate, and an anti-detachment detection component; the first cylinder is fixedly connected to the bottom end of the machine base; the fixed plate is fixedly connected to the machine base and is located above the first cylinder; the stamping plate is fixedly connected to the output end of the first cylinder and is located above the fixed plate; the anti-detachment detection component is disposed on the machine base and is used to detect the condition of the spring being pressed onto the central shaft assembly.

[0010] Preferably, the anti-detachment detection component includes a fixed base, a second cylinder, a second fixed guide rail, a sliding plate, a fixed block, and sensors; the fixed base is fixedly connected to the machine base; the second cylinder is fixedly connected to the fixed base; the second fixed guide rail is fixedly connected to the output end of the second cylinder; the sliding plate is slidably connected to the second fixed guide rail via a first electric slider; the fixed block is fixedly connected to the sliding plate; and the two sensors are fixedly connected to the fixed block, with the two sensors located on opposite sides of the center of the fixed block.

[0011] Preferably, a No. 3 fixed guide rail is fixedly connected to one side of the fixed base on the machine base; a conveyor plate is slidably connected to the No. 3 fixed guide rail via a No. 2 electric slider; a limiting seat is fixedly connected to the conveyor plate near the center, and the limiting seat is used to place the fixed plate for assembly.

[0012] Preferably, a second air pump is fixedly connected to one side of the fixing block; an electric three-way valve is fixedly connected to the output end of the second air pump, and an air pipe is fixedly connected to the electric three-way valve; two connecting seats are fixedly connected to the fixing block, and the two connecting seats are respectively located on both sides of the upper surface of the fixing block; a hook slide is slidably connected to the inner wall of the connecting seat through a spring, and a cavity is provided between the inner wall of the connecting seat and the hook slide, and the cavity can be connected to the air pipe of the electric three-way valve through the fixing block.

[0013] Preferably, the fixing block has two slots; a support base is fixedly connected to the fixing seat; a third cylinder is fixedly connected to the support base; a mounting base is fixedly connected to the output end of the third cylinder; a fourth cylinder is fixedly connected to the bottom end of the mounting base; a material picking plate is fixedly connected to the output end of the fourth cylinder; and two hook plates are slidably connected to the bottom end of the material picking plate through two third electric sliders, with the two hook plates being arranged opposite each other.

[0014] Preferably, the hook plate has an arc-shaped groove; a first anti-slip plate is fixedly connected to the hook plate at the arc-shaped groove; and multiple second anti-slip plates are fixedly connected to the hook plate below the first anti-slip plate.

[0015] Preferably, two receiving seats are fixedly connected to the fixed base; four limiting plates are fixedly connected to the receiving seats, the top of the limiting plates is set as an arc surface, and the distance between two limiting plates corresponds to the width of the receiving plate.

[0016] Preferably, a load-bearing plate is fixedly connected to one side of the fixed block on the sliding plate, and a top plate is slidably connected to the load-bearing plate; a second air guide pipe is fixedly connected to the electric three-way valve; a flow divider is fixedly connected to the load-bearing plate, and the flow divider can be connected to the electric three-way valve through the second air guide pipe; two No. 5 cylinders are fixedly connected to the load-bearing plate, and the two No. 5 cylinders can be connected to the flow divider through short pipes, and the No. 5 cylinders are located below the top plate.

[0017] Preferably, a No. 6 cylinder is fixedly connected to the base; a spring retrieval frame is fixedly connected to the output end of the No. 6 cylinder, and the spring retrieval frame is slidably connected to the base; a No. 7 cylinder is fixedly connected to the spring retrieval frame near its center; a No. 4 fixed slide rail is fixedly connected to both sides of the base near the No. 6 cylinder; a spring retrieval plate is slidably connected to the No. 4 fixed slide rail via a No. 4 electric slider; and a spring storage plate is fixedly connected to both sides of the No. 6 cylinder, with the spring storage plate located above the spring retrieval plate.

[0018] The beneficial effects of this invention are as follows: 1. The present invention relates to an assembly device for a central shaft assembly and a fixed plate for an automotive seat adjuster. A second servo motor drives a rack and pinion mechanism, causing a sliding frame to slide along a first fixed guide rail. The sliding frame first moves to the front end of the guide rail, and a transmission cylinder drives a vertical moving frame to slide down. The first servo motor and a pneumatic pick-and-place head descend synchronously, with the pick-up end extending into the central shaft cam. A first air pump vents air to the internal support to pick up the central shaft cam. After the vertical moving frame slides up, the sliding frame moves the central shaft cam above the spring. The pick-and-place head slides down again, and a pressing mechanism presses the spring onto the central shaft cam. The sliding frame continues to move, and the pick-and-place head slides down again after reaching above the fixed plate, inserting the central shaft cam and spring assembly into the fixed plate. The first servo motor drives the assembly to rotate and clamp into place. The entire process requires only one set of moving mechanisms to continuously complete the cam pickup, spring pressing, and fixed plate assembly, replacing traditional manual labor and multiple addressing operations by robotic arms, thus improving production efficiency. Simultaneously, the pressing mechanism pre-coordinates with the pressing spring, ensuring fitting accuracy and reducing the impact of assembly misalignment on the use of the adjuster.

[0019] 2. The automotive seat adjuster center shaft assembly and fixed plate assembly equipment of the present invention delivers the press-fitted center shaft assembly to the top of the fixed seat via a sliding frame. A second cylinder drives a second fixed guide rail to rise. The sliding plate adjusts the position of the fixed block via a first electric slider, aligning it with the center of the center shaft assembly. The second cylinder extends further until the fixed block presses against the assembly. Simultaneous spring compression triggers both sensors, indicating successful press-fitting and that the springs have not fallen off. Early triggering of a single sensor indicates failure, but the springs have not fallen off. Failure to trigger either sensor indicates failure and that the springs have fallen off. Subsequently, the second cylinder retracts, the fixed block detaches from the assembly, and the inspection and unloading are completed. This process is automatically completed with the assembly line. The triggering status of the dual inspection components determines the three press-fitting conditions, reducing the inflow of defective parts into subsequent processes. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the structure of cylinder number one in this invention; Figure 3 This is a schematic diagram of the vertical moving frame in this invention; Figure 4 This is a schematic diagram of the spring-retrieving plate in this invention; Figure 5 This is a schematic diagram of the structure of the fourth fixed slide rail in this invention; Figure 6 This is a schematic diagram of the sliding plate in this invention; Figure 7 This is a schematic diagram of the sensor structure in this invention; Figure 8This is a schematic diagram of the hook plate in this invention.

[0022] In the diagram: 1. Base; 11. Fixing frame; 12. Fixed guide rail No. 1; 13. Sliding frame; 14. Vertical moving frame; 15. Servo motor No. 1; 16. Pneumatic pick-and-place head; 2. Cylinder No. 1; 21. Fixing plate; 22. Stamping plate; 3. Fixing seat; 31. Cylinder No. 2; 32. Fixed guide rail No. 2; 33. Sliding plate; 34. Fixing block; 35. Sensor; 4. Fixed guide rail No. 3; 41. Conveyor tray; 42. Limit seat; 5. Air pump No. 2; 51. Electric three-way valve; 52. Connecting seat; 53. Hook slide plate; 6. Alignment slot; 61. Support base; 62. Cylinder No. 3; 63. Mounting base; 64. Cylinder No. 4; 65. Material picking plate; 66. Hook plate; 7. Arc groove; 71. Anti-slip plate No. 1; 72. Anti-slip plate No. 2; 8. Receiving base; 81. Limiting plate; 9. Loading plate; 91. Air guide pipe No. 2; 92. Diverter; 93. Cylinder No. 5; 94. Cylinder No. 6; 95. Spring picker; 96. Cylinder No. 7; 97. Fixed slide rail No. 4; 98. Spring picker plate; 99. Spring storage plate. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 7As shown in the embodiment of the present invention, an assembly device for a car seat adjuster center shaft assembly and a fixed plate includes a base 1; the base 1 is provided with a cam and spring picking and placing mechanism, which is used to pick up cams and springs and place them on the fixed plate; the cam and spring picking and placing mechanism includes a fixed frame 11, a first fixed guide rail 12, a sliding frame 13, a vertical moving frame 14, a first servo motor 15, and a pneumatic picking and placing head 16; the fixed frame 11 is fixedly connected to the base 1; the first fixed... The guide rail 12 is fixedly connected to the fixed frame 11; the sliding frame 13 is slidably connected to the first fixed guide rail 12, and the sliding frame 13 is driven by the second servo motor in conjunction with the gear and rack mechanism; the vertical moving frame 14 is slidably connected to the sliding frame 13 through the transmission electric cylinder; the first servo motor 15 is fixedly connected to the output end of the vertical moving frame 14; the pneumatic pick-and-place head 16 is fixedly connected to the output end of the first servo motor 15; the base 1 is provided with a pressing mechanism, which is used to press the spring onto the central shaft assembly;During the assembly of the central shaft assembly and the fixed plate of the car seat adjuster, the fixed bracket 11 on the base 1 supports the first fixed guide rail 12. The sliding bracket 13 is driven to slide on the first fixed guide rail 12 by the second servo motor in conjunction with a gear and rack mechanism. The cam of the central shaft is located at the front end of the first fixed guide rail 12, awaiting pickup. The spring is placed on one side of the center of the first fixed guide rail 12, awaiting press-fitting. The fixed plate is placed at the rear end of the first fixed guide rail 12, awaiting assembly. The sliding bracket 13 first slides to the front end of the first fixed guide rail 12, and then the output end of the transmission electric cylinder drives the vertical moving bracket 14 to slide down. The first servo motor 15 and the pneumatic pick-and-place head 16 slide down synchronously. The picking end of the pneumatic pick-and-place head 16 extends into the interior of the central shaft cam. Then, the built-in air pump supplies air to the picking end of the pneumatic pick-and-place head 16, which picks up the material from the internal support of the central shaft cam. The transmission cylinder then drives the vertical moving frame 14 to slide upwards. The sliding frame 13, carrying the central shaft cam, slides to a position above the spring. At this point, the pneumatic pick-and-place head 16 slides down again, approaching the spring. The pressing mechanism presses the spring against the central shaft cam. The sliding frame 13 continues to move the pressed cam and spring. When the pneumatic pick-and-place head 16 reaches above the fixed plate, it slides down again, and the central shaft assembly inserts into the fixed plate. Then, the first servo motor 15 outputs... The end drives the central shaft assembly to rotate, clamping the central shaft assembly onto the fixed plate. The cam and spring pick-and-place mechanism completes the picking and assembly of the central shaft cam and spring with the fixed plate. It is important to note that the pneumatic pick-and-place head 16 contains a shaft. This shaft, besides supporting the central shaft cam to achieve gripping movement, is also responsible for connecting the central shaft cam to the spring. After the spring is fitted, it must be rotated once to compress the spring; otherwise, it cannot be placed into the fixed plate in its natural state. After being placed into the fixed plate, the compressed spring must be released; otherwise, the shaft of the pneumatic pick-and-place head 16 will not be able to retract, and the spring may easily disintegrate. After the spring is released, a material release mechanism is provided on the outer ring above the pneumatic pick-and-place head 16, with two... The No. 5 cylinder controls the unloading mechanism, ensuring accurate spring assembly in the fixed plate. This reduces the likelihood of the spring sticking to the pneumatic pick-and-place head 16 and being ejected or carried away. Throughout the process, the cam and spring's pickup, positioning, pressing, and clamping of the fixed plate are completed by a single continuous movement mechanism. This replaces traditional manual assembly and the reciprocating sliding assembly method of the robotic arm. It eliminates the need for multiple addressing and positioning operations, reducing the time spent by the robotic arm repeatedly switching to grip parts and effectively improving overall assembly efficiency. Simultaneously, the pressing mechanism, in conjunction with the cam and spring pick-and-place mechanism, pre-presses the spring, ensuring the alignment accuracy between the spring and the central shaft cam, reducing the risk of misalignment affecting the subsequent use of the angle adjuster.

[0025] The pressing mechanism includes a first cylinder 2, a fixed plate 21, a stamping plate 22, and an anti-detachment detection component. The first cylinder 2 is fixedly connected to the bottom end of the base 1. The fixed plate 21 is fixedly connected to the base 1 and is positioned above the first cylinder 2. The stamping plate 22 is fixedly connected to the output end of the first cylinder 2 and is positioned above the fixed plate 21. The anti-detachment detection component is mounted on the base 1 and is used to detect the condition of the spring being pressed onto the central shaft assembly. When the spring is pressed onto the central shaft cam, the spring rests on the stamping plate 22 at the center of the fixed plate 21. The mandrel cam is picked up above the spring, and then the output end of cylinder 2 drives the stamping plate 22 to push up, which can directly press the spring on the stamping plate 22 onto the central shaft cam. Then the sliding frame 13 continues to move closer to the fixed plate. During the movement closer to the fixed plate, it stops at the anti-detachment detection component. The anti-detachment detection component can detect the central shaft assembly after the spring is pressed in, and detect the pressing and detachment of the spring. If the spring is detected to be detached or not pressed in place, the equipment will immediately trigger an alarm and stop the subsequent assembly process, reducing the flow of unqualified workpieces into the next process and ensuring the stability of assembly quality.

[0026] The anti-detachment detection assembly includes a fixed base 3, a second cylinder 31, a second fixed guide rail 32, a sliding plate 33, a fixed block 34, and sensors 35. The fixed base 3 is fixedly connected to the base 1. The second cylinder 31 is fixedly connected to the fixed base 3. The second fixed guide rail 32 is fixedly connected to the output end of the second cylinder 31. The sliding plate 33 is slidably connected to the second fixed guide rail 32 via a first electric slider. The fixed block 34 is fixedly connected to the sliding plate 33. The two sensors 35 are fixedly connected to the fixed block 34, and the two sensors 35 are respectively located on both sides of the center of the fixed block 34. When detecting the pressing condition of the spring and the central shaft cam, the sliding frame 13 drives the pressed central shaft assembly to the top of the fixed base 3, the output end of the second cylinder 31 drives the second fixed guide rail 32 to rise, and the sliding plate 33 is slidably connected to the first electric slider. The position of the sliding adjustment fixing block 34 is adjusted so that the center of the fixing block 34 corresponds to the center of the central shaft assembly. The output end of the second cylinder 31 extends continuously until the fixing block 34 presses against the central shaft assembly. If both sensors 35 are simultaneously triggered by the spring, the spring is considered to be properly pressed and the spring has not fallen off. If a single sensor 35 is triggered prematurely, the spring is considered to be improperly pressed and the spring has not fallen off. If neither sensor 35 is triggered by the spring, the spring is considered to be improperly pressed and the spring has fallen off. The second cylinder 31 drives the second fixed guide rail 32 to retract, causing the fixing block 34 to detach from the central shaft assembly. The subsequent unloading operation after inspection can then be completed. The entire inspection process is completed automatically with the assembly line. At the same time, the three pressing conditions of the spring can be directly judged by the triggering status of the dual detection components, reducing the flow of defective parts into subsequent processes.

[0027] like Figure 1 As shown, a third fixed guide rail 4 is fixedly connected to one side of the fixed base 3 on the base 1; a conveyor plate 41 is slidably connected to the third fixed guide rail 4 via a second electric slider; a limiting seat 42 is fixedly connected to the conveyor plate 41 near its center, and the limiting seat 42 is used to place the fixed plate for assembly; when the fixed plate is being conveyed and assembled, the third fixed guide rail 4 is fixed to the base 1 to cooperate with the conveyor plate 41 to convey the fixed plate, and the limiting seat 42 is fixed at the center of the conveyor plate 41 to position the fixed plate. The second electric slider drives the conveyor plate 41 to slide on the third fixed guide rail 4, sending the fixed plate on the limiting seat 42 to the sliding area of ​​the sliding frame 13. After the central shaft assembly is picked up, placed, and pressed, it is sent to the top of the limiting seat 42, and the central shaft assembly is assembled with the fixed plate. The second electric slider drives the assembled part to unload and reset, and then reloads the next fixed plate to wait for assembly, which plays a role in automating the feeding, positioning, and conveying of the fixed plate.

[0028] like Figure 1 , Figures 4 to 7 As shown, a second air pump 5 is fixedly connected to one side of the fixed block 34; an electric three-way valve 51 is fixedly connected to the output end of the second air pump 5, and an air pipe is fixedly connected to the electric three-way valve 51; two connecting seats 52 are fixedly connected to the fixed block 34, and the two connecting seats 52 are respectively located on both sides of the upper surface of the fixed block 34; a hook slide plate 53 is slidably connected to the inner wall of the connecting seat 52 by a spring, and a cavity is provided between the inner wall of the connecting seat 52 and the hook slide plate 53, the cavity being able to communicate with the air pipe of the electric three-way valve 51 through the fixed block 34; when the two sensors 35 detect that the spring pressing is not qualified, the second air pump 5 is used to operate the electric three-way valve 51. The internal air is inflated, and the electric three-way valve 51 sends gas through the air pipe to the cavity connecting the two connecting seats 52 in the fixed block 34, so that the two hook slides 53 are pushed out and the spring is stretched and stressed. At this time, the two hook slides 53 are located above the spring. As the output end of the second cylinder 31 retracts, it can drive the two hook slides 53 to remove the unqualified spring that is on the central shaft cam. The spring is picked up and placed on the fixed block 34, which plays the role of removing the unqualified spring. The sliding frame 13 can drive the central shaft cam back to the pressing position for re-pressing, which plays the role of secondary re-installation and reduces the probability of unqualified products. Springs that have fallen off can also be re-installed.

[0029] like Figure 1 , Figures 4 to 8As shown, the fixed block 34 has two slots 6; a support base 61 is fixedly connected to the fixed seat 3; a third cylinder 62 is fixedly connected to the support base 61; a mounting base 63 is fixedly connected to the output end of the third cylinder 62; a fourth cylinder 64 is fixedly connected to the bottom end of the mounting base 63; a material-picking plate 65 is fixedly connected to the output end of the fourth cylinder 64; the bottom end of the material-picking plate 65 is slidably connected to two hook plates 66 via two third electric sliders, and the two hook plates 66 are arranged opposite each other; when a spring that is not properly pressed is removed and placed on the fixed block 34, the output end of the third cylinder 62 on the support base 61 extends forward, driving the fourth cylinder 64 at the bottom of the mounting base 63 to the second fixed guide rail 32, and the second sliding block drives... The fixed block 34 on the sliding plate 33 slides to a position below the picking plate 65. Then, the output end of the fourth cylinder 64 drives the two hook plates 66 to extend downwards. The two hook plates 66 are inserted into the two corresponding slots 6. Then, the two third electric sliders synchronously drive the two hook plates 66 to move away from each other. The two hook plates 66 can push outwards from the inner ring of the spring, picking up the spring away from the fixed block 34. Then, the two hook plates 66 move with the spring to the defective product storage area. The two third electric sliders synchronously drive the two hook plates 66 to move closer to each other, releasing the tension and fixing of the spring. The spring falls into the storage area to complete the unloading. By picking up and transferring defective springs, the automation level of the assembly line is effectively improved, and the impact of defective springs on the production process is reduced.

[0030] The hook plate 66 has an arc-shaped groove 7; a first anti-slip plate 71 is fixedly connected to the hook plate 66 at the arc-shaped groove 7; multiple second anti-slip plates 72 are fixedly connected to the hook plate 66 below the first anti-slip plate 71; when picking up a defective spring inner support on the fixing block 34, the arc-shaped groove 7 is opened on one side of the hook plate 66, and the arc-shaped groove 7 can adapt to the arc-shaped surface of the spring. The first anti-slip plate 71 and multiple second anti-slip plates 72 are respectively fixed at the arc-shaped groove 7, which can increase the friction between the hook plate 66 and the spring inner support, reduce the slippage and fall-off situation when the two hook plates 66 move away from each other to tighten the spring, ensure the stability of the process of picking up defective springs, and ensure the smooth operation of the automatic unloading process.

[0031] Two receiving seats 8 are fixedly connected to the fixed base 3; four limiting plates 81 are fixedly connected to the receiving seats 8, the top of the limiting plates 81 is set as an arc surface, and the distance between two limiting plates 81 corresponds to the width of the picking plate 65; when unqualified springs removed from the fixed block 34 are retrieved, cylinder 62 of the third cylinder and cylinder 64 of the fourth cylinder retrieve the unqualified springs back to the receiving seats 8, and the picking plate 65 is guided by the arc surface at the top of the limiting plates 81 to enter the gap between the multiple limiting plates 81, put the unqualified springs on the four limiting plates 81, and stack them on the receiving seats 8. The multiple limiting plates 81 work together to limit and gather the falling unqualified springs, reducing the springs from tilting and falling during the receiving process. Furthermore, multiple defective springs are stacked together, making it convenient for operators to regularly transfer and process them centrally. This eliminates the need to sort and collect defective springs one by one during the unloading process, reducing the workload of operators and improving the convenience of unloading and storing defective springs. Moreover, each time the picking plate 65 feeds a spring onto the four limiting plates 81, it can press the stacked springs that have been stored, reducing the possibility of gaps after the springs are placed. At the same time, by setting up two receiving seats 8 and multiple limiting plates 81, defective springs can be classified. Springs that can still be used are placed on one receiving seat 8, while springs that cannot be used due to deformation are placed on another receiving seat 8 for sorting.

[0032] A mounting plate 9 is fixedly connected to one side of the fixed block 34 on the sliding plate 33, and a top plate is slidably connected to the mounting plate 9; a second air guide pipe 91 is fixedly connected to the electric three-way valve 51; a flow divider 92 is fixedly connected to the mounting plate 9, and the flow divider 92 can be connected to the electric three-way valve 51 through the second air guide pipe 91; two fifth cylinders 93 are fixedly connected to the mounting plate 9, and the two fifth cylinders 93 can be connected to the flow divider 92 through short pipes, and the fifth cylinders 93 are located below the top plate; when a spring that is not properly pressed is removed and placed on the fixed block 34, if the removed spring is still usable, and the top of the mounting plate 9... If there is no spring on the plate, the spring is sent to the top plate of the loading plate 9 by the two hook plates 66. Then, the second air pump 5 works to charge the electric three-way valve 51. Note that the valve at the passage hook slide plate 53 of the electric three-way valve 51 needs to be closed so that the gas enters the second air guide pipe 91. Then the gas is split through the diverter 92 and flows through two short pipes to the fifth cylinder 93. The output end of the fifth cylinder 93 slides against the top plate. The top plate can press the spring back onto the central shaft cam at the bottom of the sliding frame 13 to achieve the function of secondary pressing. If there is a spring on the top plate, the spring can be sent to the recycling area by the two hook plates 66.

[0033] like Figure 1 , Figure 4 and Figure 5As shown, a No. 6 cylinder 94 is fixedly connected to the base 1; a spring-retrieving frame 95 is fixedly connected to the output end of the No. 6 cylinder 94, and the spring-retrieving frame 95 is slidably connected to the base 1; a No. 7 cylinder 96 is fixedly connected to the spring-retrieving frame 95 near its center; a No. 4 fixed slide rail 97 is fixedly connected to both sides of the base 1 near the No. 6 cylinder 94; a spring-retrieving plate 98 is slidably connected to the No. 4 fixed slide rail 97 via a No. 4 electric slider; a spring-storing plate 99 is fixedly connected to both sides of the No. 6 cylinder 94, and the spring-storing plate 99 is located above the spring-retrieving plate 98; when feeding springs, multiple springs are respectively loaded into the two spring-storing plates 99, and the No. 4 electric sliders on the two No. 4 fixed slide rails 97 alternately drive the two spring-retrieving plates. 98 removes the spring and sends it to the center below the spring picker 95. Then, the output end of cylinder 96 extends down to remove the spring from the spring picker 98. As the output end of cylinder 94 extends, it drives the spring picker 95 and the removed spring to the position above the stamping plate 22. Then, the spring is placed on the stamping plate 22. Then, cylinder 94 drives the spring picker 95 to reset, waiting for the next spring feeding operation. This alternating feeding setting ensures the continuous spring feeding process, reduces the time wasted waiting for individual feeding mechanisms to pick up materials, improves the efficiency of spring feeding, and ensures the stability of the overall assembly rhythm. The spring storage mechanisms on both sides can store two types of symmetrical springs respectively, and are compatible with the installation of angle adjusters in two directions.

[0034] Working process: During the assembly of the central shaft assembly and the fixed plate of the car seat adjuster, the fixed bracket 11 on the base 1 supports the first fixed guide rail 12. The sliding bracket 13 is driven to slide on the first fixed guide rail 12 by the second servo motor in conjunction with the gear and rack mechanism. The cam of the central shaft is located at the front end of the first fixed guide rail 12, waiting to be picked up. The spring is placed on one side of the center of the first fixed guide rail 12, waiting to be pressed in. The fixed plate is placed at the rear end of the first fixed guide rail 12, waiting to be assembled. The sliding bracket 13 first slides to the front end of the first fixed guide rail 12. Then, the output end of the transmission electric cylinder drives the vertical moving bracket 14 to slide down. The first servo motor 15 and the pneumatic pick-and-place head 16 slide down synchronously. The picking end of pneumatic pick-and-place head 16 extends into the interior of the central shaft cam. Then, the built-in air pump supplies air to the picking end of pneumatic pick-and-place head 16, which picks up the material from the internal support of the central shaft cam. The transmission cylinder then drives the vertical moving frame 14 to slide upwards. The sliding frame 13, carrying the central shaft cam, slides to a position above the spring. At this point, pneumatic pick-and-place head 16 slides down again, approaching the spring. The pressing mechanism presses the spring against the central shaft cam. The sliding frame 13 continues to move the pressed cam and spring. When pneumatic pick-and-place head 16 reaches above the fixed plate, it slides down again, and the central shaft assembly inserts into the fixed plate. Then, the output of servo motor 15 drives the central shaft assembly to rotate. The central shaft assembly is clamped onto the fixed plate. The cam and spring pick-and-place mechanism completes the picking and assembly of the central shaft cam and spring with the fixed plate. Throughout the process, the picking, positioning, pressing, and clamping of the cam and spring onto the fixed plate only require a single set of continuous moving mechanisms. This replaces traditional manual assembly and the reciprocating sliding assembly method of the robotic arm. It eliminates the need for multiple addressing and positioning operations, reducing the time spent by the robotic arm repeatedly switching to grip parts, effectively improving overall assembly efficiency. Simultaneously, the pressing mechanism, in conjunction with the cam and spring pick-and-place mechanism, pre-presses the spring, ensuring the matching accuracy between the spring and the central shaft cam, reducing the risk of misalignment affecting the subsequent use of the adjuster. When the spring is pressed onto the central shaft cam… When the spring is placed on the cam, the spring is placed on the stamping plate 22 at the center of the fixed plate 21. The cam is picked up above the spring. Then the output end of the first cylinder 2 drives the stamping plate 22 to push up, which can directly press the spring on the stamping plate 22 onto the cam. Then the sliding frame 13 continues to move closer to the fixed plate. During the movement closer to the fixed plate, it stops at the anti-detachment detection component. The anti-detachment detection component can detect the cam assembly after the spring is pressed in, and detect the pressing and detachment of the spring. If the spring is detected to be detached or not pressed in place, the equipment will immediately trigger an alarm and stop the subsequent assembly process to reduce the flow of unqualified workpieces into the next process and ensure the stability of assembly quality.When inspecting the pressing condition of the spring and the central shaft cam, the sliding frame 13 drives the pressed central shaft assembly to the top of the fixed seat 3. The output end of the second cylinder 31 drives the second fixed guide rail 32 to extend. The sliding plate 33 adjusts the position of the fixed block 34 through the first electric slider so that the center of the fixed block 34 corresponds to the center of the central shaft assembly. The output end of the second cylinder 31 continues to extend until the fixed block 34 presses against the central shaft assembly. If both sensors 35 are simultaneously triggered by the spring, the spring is considered to be pressed into place and the spring has not fallen off. If a single sensor 35 is triggered prematurely, the spring is considered to be pressed into place but not yet fallen off. If neither sensor 35 is triggered by the spring, the spring is considered to be pressed into place but not yet fallen off. If neither sensor 35 is triggered by the spring, the spring is considered to be pressed into place but not yet fallen off. The second cylinder 31 drives the second fixed guide rail 32 to retract, causing the fixed block 34 to detach from the central shaft assembly. The subsequent unloading operation after inspection can then be completed. The entire inspection process is completed automatically with the assembly line. At the same time, the three pressing conditions of the spring can be directly judged by the triggering state of the dual inspection components, reducing the flow of defective parts into subsequent processes. When assembling the fixed disk, the No. 3 fixed guide rail 4 is fixed on the machine base 1 to cooperate with the conveyor plate 41 to transport the fixed disk. The limit seat 42 is fixed at the center of the conveyor plate 41 to position the fixed disk. The No. 2 electric slider drives the conveyor plate 41 to slide on the No. 3 fixed guide rail 4, sending the fixed disk on the limit seat 42 to the sliding area of ​​the sliding frame 13. After the central shaft assembly is picked up, placed and pressed, it is sent to the top of the limit seat 42. The central shaft assembly is then assembled with the fixed disk. The No. 2 electric slider drives the assembled parts to unload and reset, and then reloads the next fixed disk to wait for assembly, which plays the role of automating the feeding, positioning and conveying of the fixed disk. When the two sensors 35 detect that the spring pressing is not qualified, the second air pump 5 is used to charge air into the electric three-way valve 51. The electric three-way valve 51 sends the air through the air pipe to the cavity connecting the two connecting seats 52 in the fixed block 34, causing the two hook slides 53 to be pushed out. The spring is stretched and under force. At this time, the two hook slides 53 are located above the spring. As the output end of the second cylinder 31 retracts, it can drive the two hook slides 53 to remove the unqualified spring that is still on the central shaft cam. The spring is picked up and placed on the fixed block 34, which serves to remove the unqualified spring. The sliding bracket 13 can drive the central shaft cam back to the pressing position for re-pressing, which serves as a secondary re-installation function, reducing the probability of unqualified products. The spring falls off at the same time. This allows for secondary reassembly; when a spring that fails the press-fit test is removed and placed on the fixed block 34, the output end of the third cylinder 62 on the support base 61 extends forward, driving the fourth cylinder 64 at the bottom of the mounting base 63 to the second fixed guide rail 32. The second sliding block drives the fixed block 34 on the sliding plate 33 to slide to a position below the material picking plate 65. Subsequently, the output end of the fourth cylinder 64 drives the two hook plates 66 to extend downward, and the two hook plates 66 are inserted into the two corresponding slots 6. Then, the two third electric sliders synchronously drive the two hook plates 66 to move away from each other. The two hook plates 66 can push outward from the inner ring of the spring, picking up the spring from the fixed block 34. Then, the two hook plates 66 move with the spring to the defective product storage area. The two third electric sliders synchronously... The step causes the two hook plates 66 to move closer together, releasing the spring's tension and allowing it to fall into the storage area, completing the unloading process. By picking up and transferring defective springs, the automation level of the assembly line is effectively improved, reducing the impact of defective springs on production processes. When picking up defective spring supports on the fixing block 34, the arc-shaped groove 7 is located on one side of the hook plate 66. The arc-shaped groove 7 can adapt to the arc-shaped surface of the spring. The first anti-slip plate 71 and multiple second anti-slip plates 72 are fixed at the arc-shaped groove 7, which increases the friction between the hook plate 66 and the spring support, reducing the possibility of slippage and detachment when the two hook plates 66 move away from each other to tension the spring. This ensures the stability of the process of picking up defective springs and guarantees the smooth operation of the automatic unloading process. When picking up the fixed... When the defective springs removed from block 34 are recycled, cylinder 62 and cylinder 64 work together to retrieve the defective springs to the receiving seat 8. The picking plate 65 is guided by the arc surface at the top of the limiting plate 81 and enters the gap between multiple limiting plates 81. The defective springs are placed on the four limiting plates 81 and stacked on the receiving seat 8. The multiple limiting plates 81 work together to limit and gather the fallen defective springs, reducing the springs from tilting and falling during the receiving process. The multiple defective springs are stacked together, which makes it convenient for operators to regularly transfer and process them. It is not necessary to sort and collect the defective springs one by one during the unloading process, which reduces the subsequent sorting workload of the operators and improves the convenience of unloading and collecting defective springs.Moreover, each time the picking plate 65 feeds a spring onto the four limiting plates 81, it can press the stacked springs that have been stored into place, reducing the gaps after the springs are placed. At the same time, by setting two receiving seats 8 and multiple limiting plates 81, unqualified springs can be classified. Springs that can still be used are placed on one receiving seat 8, while springs that cannot be used due to deformation are placed on another receiving seat 8 for sorting. When a spring that has failed the pressing test is removed and placed on the fixing block 34, if the removed spring is still usable and there is no spring on the top plate of the reloading plate 9, the spring is sent to the top plate of the reloading plate 9 by the two hook plates 66. Then, the second air pump 5 works to charge air into the electric three-way valve 51. Note that the valve at the passage hook slide plate 53 of the electric three-way valve 51 needs to be closed so that the gas enters the second air guide pipe 91. Then the gas is divided by the diverter 92 and flows through two short pipes to the fifth cylinder 93. The output end of the fifth cylinder 93 slides against the top plate, and the top plate can press the spring back onto the central shaft cam at the bottom of the sliding frame 13 to achieve the function of secondary pressing. If there is a spring on the top plate, the spring can be sent to the recycling area by the two hook plates 66. When feeding springs, multiple springs are loaded into two spring storage plates 99. The four electric sliders on the two fixed slide rails 97 alternately drive the two spring retrieval plates 98 to take the springs away and send them to the center below the spring retrieval frame 95. Then, the output end of the seventh cylinder 96 extends down to take the springs from the spring retrieval plates 98. As the output end of the sixth cylinder 94 extends, it drives the spring retrieval frame 95 and the taken-away springs to the position above the stamping plate 22. Then, the springs are placed on the stamping plate 22. Subsequently, the sixth cylinder 94 drives the spring retrieval frame 95 to reset, waiting for the next spring feeding operation. This alternating feeding setting ensures the continuous spring feeding process, reduces the time wasted waiting for individual feeding mechanisms to retrieve materials, improves the efficiency of spring feeding, and ensures the stability of the overall assembly cycle. The spring storage mechanisms on both sides can store two types of symmetrical springs respectively, and are compatible with the installation of angle adjusters in two directions.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembly device for a central shaft assembly and a fixing plate of an automotive seat adjuster, characterized in that: The system includes a base; the base is equipped with a cam and spring picking and placing mechanism for picking up cams and springs and placing them on a fixed plate; the cam and spring picking and placing mechanism includes a fixed frame, a first fixed guide rail, a sliding frame, a vertical moving frame, a first servo motor, and a pneumatic picking and placing head; the fixed frame is fixedly connected to the base; the first fixed guide rail is fixedly connected to the fixed frame; the sliding frame is slidably connected to the first fixed guide rail and is driven by a second servo motor in conjunction with a gear and rack mechanism; the vertical moving frame is slidably connected to the sliding frame via a transmission electric cylinder; the first servo motor is fixedly connected to the output end of the vertical moving frame; the pneumatic picking and placing head is fixedly connected to the output end of the first servo motor; the base is equipped with a pressing mechanism for pressing the springs onto the central shaft assembly.

2. The assembly equipment for the central shaft assembly and fixing plate of an automotive seat adjuster according to claim 1, characterized in that: The pressing mechanism includes a first cylinder, a fixed plate, a stamping plate, and an anti-detachment detection component; the first cylinder is fixed to the bottom end of the machine base; the fixed plate is fixed to the machine base and is located above the first cylinder; the stamping plate is fixed to the output end of the first cylinder and is located above the fixed plate; the anti-detachment detection component is installed on the machine base and is used to detect the condition of the spring pressing onto the central shaft assembly.

3. The assembly equipment for the central shaft assembly and fixing plate of an automotive seat adjuster according to claim 2, characterized in that: The anti-detachment detection component includes a fixed base, a second cylinder, a second fixed guide rail, a sliding plate, a fixed block, and sensors. The fixed base is fixedly connected to the machine base. The second cylinder is fixedly connected to the fixed base. The second fixed guide rail is fixedly connected to the output end of the second cylinder. The sliding plate is slidably connected to the second fixed guide rail via a first electric slider. The fixed block is fixedly connected to the sliding plate. The two sensors are fixedly connected to the fixed block, and the two sensors are respectively located on both sides of the center of the fixed block.

4. The assembly equipment for the central shaft assembly and fixing plate of an automotive seat adjuster according to claim 1, characterized in that: A No. 3 fixed guide rail is fixedly connected to one side of the fixed base on the machine base; a conveyor plate is slidably connected to the No. 3 fixed guide rail via a No. 2 electric slider; a limit seat is fixedly connected to the conveyor plate near the center, and the limit seat is used to place the fixed plate for assembly.

5. The assembly equipment for the central shaft assembly and fixing plate of an automotive seat adjuster according to claim 3, characterized in that: A second air pump is fixedly connected to one side of the fixed block; an electric three-way valve is fixedly connected to the output end of the second air pump, and an air pipe is fixedly connected to the electric three-way valve; two connecting seats are fixedly connected to the fixed block, and the two connecting seats are respectively located on both sides of the upper surface of the fixed block; a hook slide is slidably connected to the inner wall of the connecting seat through a spring, and a cavity is provided between the inner wall of the connecting seat and the hook slide, and the cavity can be connected to the air pipe of the electric three-way valve through the fixed block.

6. The assembly equipment for the central shaft assembly and fixing plate of an automotive seat adjuster according to claim 5, characterized in that: Two slots are provided on the fixing block; a support base is fixedly connected to the fixing seat; a No. 3 cylinder is fixedly connected to the support base; a mounting base is fixedly connected to the output end of the No. 3 cylinder; a No. 4 cylinder is fixedly connected to the bottom end of the mounting base; a material picking plate is fixedly connected to the output end of the No. 4 cylinder; and two hook plates are slidably connected to the bottom end of the material picking plate through two No. 3 electric sliders, with the two hook plates being arranged opposite each other.

7. The assembly equipment for the central shaft assembly and fixing plate of an automotive seat adjuster according to claim 6, characterized in that: The hook plate has an arc-shaped groove; a first anti-slip plate is fixedly connected to the hook plate at the arc-shaped groove; and multiple second anti-slip plates are fixedly connected to the hook plate below the first anti-slip plate.

8. The assembly equipment for the central shaft assembly and fixing plate of an automotive seat adjuster according to claim 7, characterized in that: Two receiving seats are fixedly connected to the fixed base; four limiting plates are fixedly connected to the receiving seats, the top of the limiting plates is set as an arc surface, and the distance between two limiting plates corresponds to the width of the receiving plate.

9. The assembly equipment for the central shaft assembly and fixing plate of an automotive seat adjuster according to claim 7, characterized in that: A load-bearing plate is fixedly connected to one side of the fixed block on the sliding plate, and a top plate is slidably connected to the load-bearing plate; a second air guide pipe is fixedly connected to the electric three-way valve; a flow divider is fixedly connected to the load-bearing plate, and the flow divider can be connected to the electric three-way valve through the second air guide pipe; two No. 5 cylinders are fixedly connected to the load-bearing plate, and the two No. 5 cylinders can be connected to the flow divider through short pipes, and the No. 5 cylinders are located below the top plate.

10. The assembly equipment for the central shaft assembly and fixing plate of an automotive seat adjuster according to claim 2, characterized in that: A No. 6 cylinder is fixedly connected to the base; a spring retrieval frame is fixedly connected to the output end of the No. 6 cylinder, and the spring retrieval frame is slidably connected to the base; a No. 7 cylinder is fixedly connected to the spring retrieval frame near its center; a No. 4 fixed slide rail is fixedly connected to both sides of the base near the No. 6 cylinder; a spring retrieval plate is slidably connected to the No. 4 fixed slide rail via a No. 4 electric slider; a spring storage plate is fixedly connected to both sides of the No. 6 cylinder, and the spring storage plate is located above the spring retrieval plate.

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