A spiral spring installation device for automobile seat recliner

Abstract

The present invention discloses a spiral spring installation device for a car seat recliner, which relates to the technical field of spiral spring assembly, including a stamping mechanism, a positioning mechanism, a sorting mechanism, a spiral spring and a recliner housing, the stamping mechanism includes a cylinder one, a main push plate, a fixed frame, a secondary push plate, a group of cylinder two and a pre-processing module, wherein the main push plate is fixedly connected to the driving end of the cylinder one, the fixed frame is connected to the end face of the main push plate, the secondary push plate is arranged on the surface of the fixed frame, the cylinder two is respectively fixed to one side of the fixed frame and the driving end is connected to the secondary push plate, the pre-processing module is arranged on the fixed frame, and is used to place the spiral spring and perform pre-bending treatment, the positioning mechanism is arranged relative to the pre-processing module, and is used to place the recliner housing, and the sorting mechanism is arranged at the lower side of the positioning mechanism, and is used to classify the finished product according to the installation state of the spiral spring. The present invention can evaluate the performance of the spiral spring before installation, eliminate defective products, and improve the quality of the final product.

Description

Technical Field

[0001] The invention relates to the technical field of spiral spring assembly, in particular to a spiral spring installation device for a car seat recliner. Background Art

[0002] The car seat recliner is an important core component of a car seat. It is installed between the seat back and the seat pan. It is mainly used to achieve the tilt angle and folding movement of the seat back to meet the needs of different human postures and as a transmission structure for the force exerted by the human body on the backrest. The car seat recliner is composed of a return spring, which is generally a scroll spring. The scroll spring is a special elastic element whose main function is to receive and transmit loads and store and release energy.

[0003] The spiral spring is installed on the recliner to ensure that the seat back can rebound forward against the weight of the backrest when the angle is adjusted. This rebound force is an important part of seat comfort and safety because it allows the seat back to remain stable after being adjusted to different angles.

[0004] The existing spiral springs are mostly installed manually when installed on the recliners. However, the manual installation efficiency is low and it is easy to cause improper installation, which affects the product quality. Summary of the invention

[0005] The object of the present invention is to provide a spiral spring installation device for a car seat recliner to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a spiral spring installation device for a car seat recliner, comprising a stamping mechanism, a positioning mechanism, a sorting mechanism, a spiral spring and a recliner housing, the stamping mechanism comprising a cylinder one, a main push plate, a fixed frame, a secondary push plate, a group of cylinder two and a pre-processing module, wherein the main push plate is fixedly connected to the driving end of the cylinder one, the fixed frame is connected to the end face of the main push plate, the secondary push plate is arranged on the surface of the fixed frame, the cylinder two is respectively fixed on one side of the fixed frame and the driving end is connected to the secondary push plate, the pre-processing module is arranged on the fixed frame, and is used to place the spiral spring and perform pre-bending treatment, the positioning mechanism is arranged relative to the pre-processing module, and is used to place the recliner housing, and the sorting mechanism is arranged on the lower side of the positioning mechanism, and is used to classify the finished products according to the installation status of the spiral spring.

[0007] According to the above technical solution, the preprocessing module includes a rotating cylinder, which is fixed on the side of a fixed frame. The driving end of the rotating cylinder is connected to a rotating sleeve. A placing table is fixed on the fixed frame. The rotating sleeve is arranged at one end of the placing table and rotates therewith. The rotating sleeve is connected to a pre-bending rod, and the pressure surface of the pre-bending rod is provided with a pressure sensing module 1.

[0008] According to the above technical solution, the fixed frame and the secondary push plate are provided with arc grooves to cooperate with the rotation arc of the pre-bending rod. The spiral spring includes three parts: the inner end, the spiral body and the hook-shaped outer end. A positioning column is provided on the surface of the placement table. A long groove is provided in the middle of the positioning column for placing the inner end of the spiral spring. The pre-bending rod is used to press the hook-shaped outer end.

[0009] According to the above technical solution, the positioning mechanism includes a positioning plate, a positioning groove is opened on the surface of the positioning plate, a partition is fixed in the positioning groove, the partition is separated from the bottom of the positioning groove by a distance, at least two positioning rods are rotatably arranged on the partition, a driving gear is sleeved on the side of the positioning rod facing the positioning plate and is threadedly matched with the driving gear, the driving gear is matched with an active gear, the active gear is connected to motor 1, and motor 1 is fixed on the side of the positioning plate.

[0010] According to the above technical solution, a circular groove is formed in the positioning plate and the positioning rod, the driving end of motor 1 passes through the positioning plate and is connected to the driving gear, and the driving gear and the two driving gears are arranged in the space between the partition and the bottom of the positioning groove; a corresponding positioning hole is formed in the angle adjuster housing and the positioning rod, a mounting block is provided at the inner end of the spiral spring, and a limiting rod is provided at the hook-shaped outer end of the spiral spring.

[0011] According to the above technical solution, an adsorption pad is provided on the partition, and the interior of the adsorption pad is divided into several cells. An internal pressure module is laid inside the cell to detect the internal pressure state of each cell. The adsorption pad is cooperated with each cell to open an air port, and the cell is connected to an air pump, which is fixed on the side of the positioning plate.

[0012] According to the above technical solution, the sorting mechanism includes a transmission belt, a second motor, an electric push rod and a push plate, wherein the second motor is arranged in cooperation with the transmission belt to drive the transmission belt to rotate forward or reversely, the transmission belt is provided with a second pressure sensing module to determine whether there is a workpiece dropped on the surface of the transmission belt, the electric push rod is fixed on the surface of the transmission belt and is located at the lower side of the positioning mechanism, and the push plate is fixed on the driving end of the electric push rod.

[0013] According to the above technical solution, a mounting plate is fixed to the cylinder, a plurality of guide pillars are connected between the mounting plate and the positioning plate, the main push plate is slidably matched with each guide pillar, and the guide pillars are used to assist in the alignment between the fixing frame and the positioning plate.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing a pretreatment module, can evaluate the performance of the spiral spring before installation, thereby eliminating defective products and improving the quality of the final product, while the winding and installation steps are all completed autonomously by the machine, saving manpower; by providing a positioning mechanism, a stamping buffer can be provided while fixing the recliner housing, and the surface state of the recliner housing can be evaluated according to the negative pressure state, thereby eliminating defective products and further improving the quality of the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a partial schematic diagram of the present invention;

[0018] Figure 3 It is a partial schematic diagram of the punching mechanism of the present invention;

[0019] Figure 4 is a schematic diagram of a preprocessing module of the present invention;

[0020] Figure 5 is a schematic diagram of a positioning plate of the present invention;

[0021] Figure 6 is a schematic side view of a partition of the present invention;

[0022] Figure 7 It is a schematic diagram of the combination of the spiral spring and the angle adjuster housing of the present invention;

[0023] In the figure: 1, scroll spring; 11, inner end; 12, scroll body; 13, hook-shaped outer end; 2, angle adjuster housing; 21, positioning hole; 22, mounting block; 23, limit rod; 30, cylinder one; 31, main push plate; 32, fixed frame; 321, placement table; 322, positioning column; 323, long groove; 33, secondary push plate; 34, cylinder two; 35, rotating cylinder; 36, rotating sleeve; 37, mounting plate; 361, pre-bent rod; 40, positioning plate; 41, positioning groove; 42, partition; 421, adsorption cushion; 422, unit cell; 423, air port; 43, positioning rod; 44, driving gear; 45, driving gear; 46, motor one; 47, air pump; 50, transmission belt; 51, motor two; 52, electric push rod; 53, push plate; 6, guide column. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-7The present invention provides a technical solution: a spiral spring installation device for a car seat recliner, comprising a stamping mechanism, a positioning mechanism, a sorting mechanism, a spiral spring 1 and a recliner housing 2, the stamping mechanism comprising a cylinder 1 30, a main push plate 31, a fixing frame 32, a secondary push plate 33, a group of cylinder 2 34 and a pre-processing module, wherein the main push plate 31 is fixedly connected to the driving end of the cylinder 1 30, the fixing frame 32 is connected to the end surface of the main push plate 31, the secondary push plate 33 is arranged on the surface of the fixing frame 32, the cylinder 2 34 is respectively fixed on one side of the fixing frame 32 and the driving end is connected to the secondary push plate 33, the pre-processing module is arranged on the fixing frame 32, and is used to place the spiral spring 1 and perform pre-bending treatment, the positioning mechanism is arranged relative to the pre-processing module, and is used to place the recliner housing 2, and the sorting mechanism is arranged at the lower side of the positioning mechanism, and is used to classify the finished products according to the installation status of the spiral spring 1;

[0026] The preprocessing module includes a rotating cylinder 35, which is fixed on the side of the fixed frame 32. The driving end of the rotating cylinder 35 is connected to a rotating sleeve 36. A placing table 321 is fixed on the fixed frame 32. The rotating sleeve 36 is sleeved on one end of the placing table 321 and rotates therewith. The rotating sleeve 36 is connected to a pre-bending rod 361, and the pressure surface of the pre-bending rod 361 is provided with a pressure sensing module 1.

[0027] It should be noted that: the fixed frame 32 and the secondary push plate 33 are provided with arc grooves to cooperate with the rotation arc of the pre-bent rod 361. The spiral spring 1 includes three parts: the inner end 11, the spiral body 12 and the hook-shaped outer end 13. A positioning column 322 is provided on the surface of the placement table 321. A long groove 323 is provided in the middle of the positioning column 322 for placing the inner end 11 of the spiral spring 1. The pre-bent rod 361 is used to press the hook-shaped outer end 13.

[0028] In actual operation, the staff places the spiral spring 1 on the placement table 321, places the inner end 11 in the long groove 323, and places the hook-shaped outer end 13 on the pre-bending rod 361. The cylinder 1 30 pushes the fixing frame 32 toward the positioning mechanism, and the rotating cylinder 35 drives the pre-bending rod 361 to rotate. The pre-bending rod 361 presses the hook-shaped outer end 13 and rotates a certain angle to retract the spiral spring 1. During this process, the pressure sensing module 1 monitors the force of the spiral spring 1 and evaluates the elasticity of the spiral spring 1. Finally, the cylinder 2 34 pushes the secondary push plate 33 to push the spiral spring 1 out.

[0029] like Figures 5 and 6As shown, the positioning mechanism includes a positioning plate 40, a positioning groove 41 is opened on the surface of the positioning plate 40, a partition 42 is fixed in the positioning groove 41, the partition 42 is separated from the bottom of the positioning groove 41 by a distance, at least two positioning rods 43 are rotatably arranged on the partition 42, and the positioning rod 43 is provided with a driving gear 44 facing the side of the positioning plate 40 and threadedly engaged with the driving gear 44, and the driving gear 44 is cooperated with the driving gear 45, and the driving gear 45 is connected to a motor 46, and the motor 46 is fixed on the side of the positioning plate 40.

[0030] Supplementary explanations based on the above structure are as follows: the positioning plate 40 is provided with a circular groove in cooperation with the positioning rod 43, the driving end of the motor 46 passes through the positioning plate 40 and is connected to the driving gear 45, and the driving gear 45 and the two driving gears 44 are arranged in the space between the partition 42 and the bottom of the positioning groove 41; the adjuster housing 2 is provided with a corresponding positioning hole 21 in cooperation with the positioning rod 43, a mounting block 22 is provided in cooperation with the inner end 11 of the spiral spring 1, and a limiting rod 23 is provided in cooperation with the hook-shaped outer end 13 of the spiral spring 1.

[0031] In actual operation, the motor 46 controls the rotation of the active gear 45 to synchronously drive the two driving gears 44 to rotate, so that the positioning rod 43 extends out of or retracts into the surface of the partition 42. Before installation, the positioning rod 43 extends out of the surface of the partition 42, and the staff fixes the recliner housing 2 on the positioning rod 43 through the positioning hole 21 of the recliner housing 2. When unloading is required, the positioning rod 43 is controlled to retract into the surface of the partition 42 and separate from the recliner housing 2.

[0032] An adsorption pad 421 is provided on the partition 42. The interior of the adsorption pad 421 is divided into several cells 422. An internal pressure module is laid inside the cell 422 to detect the internal pressure state of each cell 422. The adsorption pad 421 is cooperated with each cell 422 to open an air port 423. The cell 422 is connected to an air pump 47, and the air pump 47 is fixed on the side of the positioning plate 40.

[0033] In actual operation, the adsorption pad 421 is used to grasp the back of the recliner shell 2 by utilizing negative pressure, that is, when the recliner shell 2 is placed on the positioning rod 43, the air pump 47 extracts the gas in each cell 422, so that the corresponding adsorption pad 421 is partially adsorbed on the surface of the recliner shell 2, further fixing the recliner shell 2. At the same time, the adsorption pad 421 can be used for buffering the recliner shell 2 during stamping installation, reducing the possibility of damage to the recliner shell 2 due to stamping force.

[0034] like Figure 2As shown, the sorting mechanism includes a transmission belt 50, a second motor 51, an electric push rod 52 and a push plate 53, wherein the second motor 51 is arranged in cooperation with the transmission belt 50 to drive the transmission belt 50 to rotate forward or reversely, the transmission belt 50 is provided with a second pressure sensing module to determine whether there is a workpiece dropped on the surface of the transmission belt 50, the electric push rod 52 is fixed on the surface of the transmission belt 50 and is located at the lower side of the positioning mechanism, and the push plate 53 is fixed on the driving end of the electric push rod 52.

[0035] The cylinder 1 30 is fixed with a mounting plate 37 , and a plurality of guide pillars 6 are connected between the mounting plate 37 and the positioning plate 40 . The main push plate 31 is slidably matched with each guide pillar 6 , and the guide pillars 6 are used to assist in the alignment between the fixing frame 32 and the positioning plate 40 .

[0036] The specific implementation methods are as follows:

[0037] Step 1: Feeding, the staff places the spiral spring 1 and the angle adjuster housing 2 on the pre-processing module and the positioning mechanism respectively;

[0038] Step 2: pre-bending, starting the equipment, the pre-processing module reels the spiral spring 1 to a certain extent, and the elastic state of the spiral spring 1 is evaluated according to the detection value of the pressure sensing module 1 to determine whether the spiral spring 1 is qualified;

[0039] Step 3: Fixing, during the pre-bending period, the positioning mechanism further grasps the recliner housing 2 using negative pressure and evaluates its surface condition;

[0040] Step 4: Installation. After the inspection is completed, the stamping mechanism pushes the spiral spring 1. After the spiral spring 1 is close to the surface to be installed on the recliner housing 2, the winding degree of the spiral spring 1 is adjusted according to the installation position. Finally, the spiral spring 1 is stamped to the installation surface of the recliner housing 2.

[0041] Step 5: Sorting: classify qualified products and defective products according to the evaluation results of the above steps.

[0042] Specifically, in step 2, the pre-bending rod 361 will detect the reaction force from the spiral spring 1 during the process of winding the spiral spring 1, record the reaction force value in the winding state, and judge whether the strength of the spiral spring 1 meets the requirements according to the magnitude of the force. Then, the pre-bending rod 361 slowly returns to the initial state, and judges the elastic performance of the spiral spring 1 according to the position where the force disappears. That is, when the strength of the spiral spring 1 meets expectations, the pre-bending rod 361 can detect a continuously increasing reaction force during the winding process, and finally stabilize within a range. On this basis, if it is detected that the reaction force of the spiral spring 1 is less than or greater than the ideal range, the yield strength, tensile strength and other characteristics of the spiral spring 1 do not meet the standards, which may be due to problems with the material quality or the production process. The spiral spring 1 is a defective product and cannot be used for subsequent installation;

[0043] If the reaction force of the spiral spring 1 is within the ideal range, the elastic performance is evaluated in combination with the rebound position of the spiral spring 1. Specifically, assuming that the rotation speed of the pre-bent rod 361 is constant, when the spiral spring 1 is first contacted, the time t1 when the pressure signal is detected is recorded, and when the spiral spring 1 is retracted for the second time after resetting, t2 is recorded again. If t1 is equal to t2, the elastic performance of the spiral spring 1 is good, and the spiral spring 1 is a qualified product and can be used for subsequent installation. Errors may occur during the actual detection process, and the allowable error range can be set manually.

[0044] In step 3, the cells 422 covered by the adsorption pad 421 on the surface of the standard recliner housing 2 are recorded. According to the internal pressure state of the cells 422 during actual operation, the quality of the recliner housing 2 is evaluated. In actual operation, if the position and number of the cells 422 that reach the negative pressure state do not meet expectations, the shape of the recliner housing 2 deviates from the standard part, and the shape of the recliner housing 2 is unqualified.

[0045] In step 4, the adsorption cushion 421 provides a stamping buffer and determines whether the recliner housing 2 is cracked according to the change in the internal pressure state of the cell 422. That is, if the recliner housing 2 is cracked on the surface due to being unable to withstand the stamping force during the stamping process, the corresponding cell 422 will release the negative pressure state due to air leakage from the crack.

[0046] In step five, if it is detected that the spiral spring 1 or the recliner housing 2 is defective before installation, the material is unloaded immediately. When the defective product falls onto the transmission belt 50, it is captured by the pressure sensing module 2 and pushed to the defective product area on one side of the transmission belt 50 by the electric push rod 52 and the push plate 53; if it is detected that the recliner housing 2 is cracked during the installation process, after unloading, the transmission belt 50 rotates forward to transport the failed workpiece to the side where the staff is, and the staff separates the spiral spring 1 from the recliner housing 2, recovers the spiral spring 1, and throws the recliner housing 2 into the defective product area; if there is no problem with the final product, after unloading, the transmission belt 50 rotates in the opposite direction to transport the qualified workpiece to the qualified area.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spiral spring installation device for a car seat recliner, comprising a stamping mechanism, a positioning mechanism, a sorting mechanism, a spiral spring (1) and a recliner housing (2), characterized in that: The punching mechanism comprises a cylinder (30), a main push plate (31), a fixed frame (32), a secondary push plate (33), a group of cylinders (34) and a pre-processing module, wherein the main push plate (31) is fixedly connected to the driving end of the cylinder (30), the fixed frame (32) is connected to the end surface of the main push plate (31), the secondary push plate (33) is arranged on the surface of the fixed frame (32), the cylinders (34) are respectively fixed to one side of the fixed frame (32) and the driving end is connected to the secondary push plate (33), the pre-processing module is arranged on the fixed frame (32), and is used to place the spiral spring (1) and perform pre-bending treatment, the positioning mechanism is arranged relative to the pre-processing module, and is used to place the angle adjuster housing (2), and the sorting mechanism is arranged at the lower side of the positioning mechanism, and is used to classify the finished products according to the installation status of the spiral spring (1); The pre-processing module comprises a rotating cylinder (35), the rotating cylinder (35) is fixed on the side of the fixing frame (32), the driving end of the rotating cylinder (35) is connected with a rotating sleeve (36), a placing table (321) is fixed on the fixing frame (32), the rotating sleeve (36) is sleeved on one end of the placing table (321) and rotatably cooperates with the placing table (321), the rotating sleeve (36) is connected with a pre-bending rod (361), and the pressure surface of the pre-bending rod (361) is provided with a pressure sensing module 1; The positioning mechanism comprises a positioning plate (40), a positioning groove (41) is provided on the surface of the positioning plate (40), a partition (42) is fixed in the positioning groove (41), the partition (42) is spaced a distance from the bottom of the positioning groove (41), at least two positioning rods (43) are rotatably arranged on the partition (42), a driving gear (44) is sleeved on the side of the positioning rod (43) facing the positioning plate (40) and is threadedly matched with the driving gear (44), the driving gear (44) is matched with a driving gear (45), the driving gear (45) is connected to a motor 1 (46), and the motor 1 (46) is fixed on the side of the positioning plate (40); The partition plate (42) is provided with an adsorption pad (421), the interior of the adsorption pad (421) is divided into a plurality of cells (422), an internal pressure module is provided inside the cells (422) for detecting the internal pressure state of each cell (422), the adsorption pad (421) is provided with an air port (423) in cooperation with each cell (422), the cell (422) is connected to an air pump (47), and the air pump (47) is fixed on the side of the positioning plate (40).

2. A spiral spring installation device for a car seat recliner according to claim 1, characterized in that: The fixing frame (32) and the secondary push plate (33) are provided with arc grooves to match the rotation arc of the pre-bent rod (361); the spiral spring (1) comprises three parts, namely, an inner end (11), a spiral body (12) and a hook-shaped outer end (13); a positioning column (322) is provided on the surface of the placement table (321); a long groove (323) is provided in the middle of the positioning column (322) for placing the inner end (11) of the spiral spring (1); and the pre-bent rod (361) is used to press the hook-shaped outer end (13).

3. A spiral spring installation device for a car seat recliner according to claim 2, characterized in that: The positioning plate (40) is provided with a circular groove in cooperation with the positioning rod (43); the driving end of the motor 1 (46) passes through the positioning plate (40) and is connected to the driving gear (45); the driving gear (45) and the two driving gears (44) are arranged in the space between the partition plate (42) and the bottom of the positioning groove (41); The angle adjuster housing (2) is provided with a corresponding positioning hole (21) in cooperation with the positioning rod (43), a mounting block (22) is provided in cooperation with the inner end (11) of the spiral spring (1), and a limiting rod (23) is provided in cooperation with the hook-shaped outer end (13) of the spiral spring (1).

4. The spiral spring installation device for a car seat recliner according to claim 3, characterized in that: The sorting mechanism comprises a transmission belt (50), a second motor (51), an electric push rod (52) and a push plate (53), wherein the second motor (51) is arranged in cooperation with the transmission belt (50), the transmission belt (50) is provided with a second pressure sensing module, the electric push rod (52) is fixed on the surface of the transmission belt (50) and is located at the lower side of the positioning mechanism, and the push plate (53) is fixed on the driving end of the electric push rod (52).

5. The spiral spring installation device for a car seat recliner according to claim 4, characterized in that: The cylinder 1 (30) is fixed with a mounting plate (37), a plurality of guide pillars (6) are connected between the mounting plate (37) and the positioning plate (40), and the main push plate (31) is slidably matched with each of the guide pillars (6).

6. The spiral spring installation device for a car seat recliner according to claim 5, characterized in that: The method of using the scroll spring installation device is as follows: Step 1: Loading materials, the staff place the scroll spring (1) and the angle adjuster housing (2) on the pre-processing module and the positioning mechanism respectively; Step 2: pre-bending, starting the equipment, the pre-processing module rewinds the spiral spring (1) to a certain extent, and the elastic state of the spiral spring (1) is evaluated according to the detection value of the pressure sensing module 1 to determine whether the spiral spring (1) is qualified; Step 3: Fixing: During the pre-bending period, the positioning mechanism further grasps the recliner housing (2) using negative pressure and evaluates its surface condition; Step 4: Installation. After the inspection is completed, the stamping mechanism pushes the spiral spring (1). After the spiral spring (1) is close to the surface to be installed on the recliner housing (2), the winding degree of the spiral spring (1) is adjusted according to the installation position. Finally, the spiral spring (1) is stamped onto the installation surface of the recliner housing (2); Step 5: Sorting: classify qualified products and defective products according to the evaluation results of the above steps.

7. The spiral spring installation device for a car seat recliner according to claim 6, characterized in that: In step 2, the pre-bending rod (361) detects the reaction force from the spiral spring (1) during the process of winding the spiral spring (1), records the reaction force value in the winding state, and determines whether the strength of the spiral spring (1) meets the requirements based on the magnitude of the force. Then, the pre-bending rod (361) slowly returns to the initial state, and determines the elastic performance of the spiral spring (1) based on the position where the force disappears. That is, when the strength of the spiral spring (1) meets the expectations, the pre-bending rod (361) can detect a continuously increasing reaction force during the winding process, and finally stabilize within a range. On this basis, if it is detected that the reaction force of the spiral spring (1) is less than or greater than the ideal range, the yield strength, tensile strength and other characteristics of the spiral spring (1) do not meet the requirements, which may be due to problems with the material quality or the production process. The spiral spring (1) is a defective product and cannot be used for subsequent installation. If the reaction force of the spiral spring (1) is within the ideal range, the elastic performance is evaluated in combination with the rebound position of the spiral spring (1). Specifically, assuming that the rotation speed of the pre-bent rod (361) is constant, when the spiral spring (1) is first contacted, the time t1 when the pressure signal is detected is recorded. After resetting, the spiral spring (1) is reeled in for the second time, and t2 is recorded again. If t1 is equal to t2, the elastic performance of the spiral spring (1) is good, and the spiral spring (1) is a qualified product that can be used for subsequent installation. Errors may occur during the actual detection process, and the allowable error range can be set manually.

8. The spiral spring installation device for a car seat recliner according to claim 7, characterized in that: The cells (422) covered by the adsorption pad (421) on the surface of the standard recliner housing (2) are recorded, and the quality of the recliner housing (2) is evaluated according to the internal pressure state of the cells (422) during actual operation. During actual operation, if the position and number of the cells (422) that reach the negative pressure state do not meet expectations, the shape of the recliner housing (2) deviates from that of the standard part, and the shape of the recliner housing (2) is unqualified.

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