An intelligent flexible clamping system and an automatic assembly process for automobile seat backs

Abstract

The present invention provides an intelligent flexible clamping system and an automatic assembly process for a car seat backrest, wherein a first toggle mechanism and a second toggle mechanism are symmetrically arranged on both sides of a working station of a conveying track, a third toggle mechanism is arranged at one end of the working station, and a clamping mechanism is also arranged beside the working station of the conveying track; the assembly process steps include: delivering the car seat back foam to the working station by means of the conveying track, folding and fixing the side edge of the car seat back foam, pressing the bottom edge of the car seat back foam, inserting the headrest area of ​​the car seat back frame into the accommodation space at the top of the car seat back foam, and then controlling all toggle mechanisms to loosen. The present invention realizes efficient and intelligent assembly of the car seat back foam and the car seat back frame with a simple technical route with low facility cost and completely different from the existing scheme.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent manufacturing of automobiles, and particularly relates to an intelligent flexible clamping system and an automatic assembly process for automobile seat backs. Background Art

[0002] Automobile vehicle and parts related enterprises need to comprehensively consider many aspects such as material supply coordination, process coordination, production rhythm coordination, and intelligent product transportation to achieve high-efficiency and batch production of personalized products. The intelligent production line developed and applied around intelligent manufacturing technology is an important foundation and guarantee for realizing Industry 4.0.

[0003] In each intelligent production line, the clamping system / fixture integration system is an essential facility, such as the welding clamping system / fixture integration system, the painting clamping system / fixture integration system, and the assembly clamping system / fixture integration system. Among them, the flexible clamping system / fixture integration system is widely used because of its advantages such as flexible adaptation to changes in the shape and size of workpieces and convenient adjustment.

[0004] Although intelligent manufacturing has been achieved in many current automobile manufacturing links, there is still a large amount of work that needs to rely on manual labor in some sub-domains and processes that are difficult to standardize. For example: in the field of automobile seat back assembly, the installation of the foamed automobile seat back foam on the backrest frame has not been made intelligent.

[0005] At present, the main operation process for installing the automotive seat back foam on the backrest frame is as follows: First, the backrest frame is installed vertically and fixed on the operation platform. Then, an operator holds the automotive seat back foam and stands behind the backrest frame. Next, the area where the headrest of the automotive seat back frame is located is inserted vertically into the receiving space at the top of the automotive seat back foam. Then, 1-2 operators wrap the automotive seat back foam around the edge of the automotive seat back frame. However, there are many drawbacks to the existing operation method: It requires operators to bend over repeatedly or raise their arms to operate (when the automotive seat back frame is installed on an operation platform higher than 1m, they need to raise their arms to install the automotive seat back foam, and when the automotive seat back frame is installed on an operation platform lower than 1m, the operator needs to bend over for wrapping operation). The labor intensity is high, and it is easy to cause operator fatigue; the assembly efficiency is low, and it takes 2-3 minutes for each skilled operator to install a set of automotive seat back foam on the automotive seat back frame. Although some intelligent equipment manufacturing enterprises have developed some intelligent production lines for automotive seat back assembly (such as headrest installation production lines, seat cover stitching production lines), there is still no production line suitable for the installation of automotive seat back foam. More critically, since the automotive seat back foam is elastic and the edge binding length on one side is usually not less than half of the total height of the automotive seat back, if robots are used for operation, at least four six-degree-of-freedom robots need to cooperate with each other to complete the work of wrapping the automotive seat back foam. This not only has the problem of large space occupation by facilities and high facility costs, but also has the problem of interference between the robot arms and their working ends, which is also one of the key factors that have prevented the realization of intelligence in this sub-field. Summary of the Invention

[0006] The purpose of the present invention is to provide an intelligent flexible clamping system and an automatic assembly process for automotive seat backs. This solution realizes the efficient and intelligent assembly of automotive seat back foam and automotive seat back frames with a technical route that is simple, low-cost, and completely different from the existing solutions.

[0007] The present invention adopts the following technical solutions.

[0008] An intelligent flexible clamping system comprises a conveying track, wherein a first toggle mechanism and a second toggle mechanism are symmetrically arranged on both sides of a working station of the conveying track, a third toggle mechanism is arranged on one end side of the working station, and a clamping mechanism is also arranged beside the working station of the conveying track; the conveying track, the first toggle mechanism, the second toggle mechanism, the third toggle mechanism and the clamping mechanism are all connected to a control system, and the control system controls each mechanism to act according to a preset program; wherein the conveying track is used to convey horizontally arranged automobile seat back foam, the first toggle mechanism and the second toggle mechanism are used to fold open and fix the side edge wrapping of the automobile seat back foam, the third toggle mechanism is used to fold open and fix the bottom edge wrapping of the automobile seat back foam, the first toggle mechanism, the second toggle mechanism, the third toggle mechanism and the conveying track together constitute a mechanism for clamping and positioning the automobile seat back foam, and the clamping mechanism is used to clamp the workpiece and deliver it to a specified position.

[0009] As a preferred solution, the clamping mechanism is installed on the robot, which is used to clamp the car seat back frame and send it to the working station on the one hand, and to clamp the car seat back covered with foam and send it to the next station on the other hand.

[0010] In order to flip open the side edge of the car seat back foam in a simpler way, the first toggle mechanism and the second toggle mechanism both include: a hook portion, which is installed on the three-dimensional action mechanism and can extend between the side edge of the car seat back foam and the foam body.

[0011] In order to quickly and smoothly flip over and fix the bottom edge edging of the car seat back foam in a simpler way, the third toggle mechanism includes: a transverse cylinder, the front end of the telescopic rod of the transverse cylinder is connected to the vertical cylinder, the front end of the telescopic rod of the vertical cylinder is connected to the longitudinal cylinder, the front end of the telescopic rod of the longitudinal cylinder is connected to the lever, and the lever can be inserted between the bottom edge edging of the car seat back foam and the foam body.

[0012] In the present invention, the control system includes a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, at least the following steps / functions can be implemented:

[0013] S1, when the car seat back foam moves to the working station along the conveying track, the conveying track is controlled to pause;

[0014] S2, when it is detected that the seat back foam is located at the working position, the first toggle mechanism and the second toggle mechanism are controlled to operate synchronously, so that the hook claw part extends into between the side edge of the automobile seat back foam and the foam body, and then the hook claw part is controlled to move back, so as to fold open and fix the side edge of the automobile seat back foam;

[0015] S3, controlling the third toggle mechanism to operate, so that the toggle rod is inserted between the bottom edge of the automobile seat back foam and the foam body, and then controlling the vertical cylinder to move forward to fold open and fix the bottom edge of the automobile seat back foam;

[0016] S4, controls the clamping mechanism to move the car seat back frame and deliver it to the working station, inserts the headrest area of ​​the car seat back frame into the accommodating space on the top of the car seat back foam, then controls all the toggle mechanisms to release, and then controls the clamping mechanism to move the car seat back covered with foam and deliver it to the next station.

[0017] The present invention also provides an automatic assembly process for a car seat backrest using the aforementioned intelligent flexible clamping system, the steps comprising:

[0018] Step 1, placing the car seat back foam horizontally on the conveying track, with the side edge wrapping and bottom edge wrapping of the seat back foam facing upward, and delivering the car seat back foam to the working station by means of the conveying track, and then controlling the conveying track to pause;

[0019] Step 2, first control the hook parts of the first toggle mechanism and the second toggle mechanism to move to the target position A, so that the hook parts extend into between the side edge of the automobile seat back foam and the foam body, and then control the hook parts of the first toggle mechanism and the second toggle mechanism to move back to the target position B, fold open the side edge of the automobile seat back foam and fix it;

[0020] Step 3, first control the vertical cylinder to move so that the lever is extended to the target height; then control the longitudinal cylinder to move so that the lever is inserted between the bottom edge of the car seat back foam and the foam body; then control the transverse cylinder to move so that the vertical cylinder, the longitudinal cylinder and the lever are synchronously moved forward to the target position C, at which time the bottom edge of the car seat back foam is folded open; then control the vertical cylinder to move downward to press the bottom edge of the car seat back foam;

[0021] Step 4, control the robot and the clamping mechanism to operate, clamp the car seat back frame and send it to the work station, so that the headrest area of ​​the car seat back frame is inserted into the accommodating space on the top of the car seat back foam; then control all the toggle mechanisms to loosen, at this time, the side edge edging and bottom edge edging of the car seat back foam will be reset under the action of the foam's own elastic force, thereby covering the corresponding edge areas of the car seat back frame; then control the robot and the clamping mechanism to operate, take the car seat back covered with foam and send it to the next work station.

[0022] In order to be able to quickly and stably open and fix the bottom edge of the car seat back foam more smoothly and stably, the length of the lever is 1.2 to 1.5 times the width of the car seat back frame, and after the telescopic rod of the longitudinal cylinder is extended, the front end of the lever does not extend out of the side edge of the conveying track.

[0023] As a preferred solution, the lever is a round rod with a diameter of 15-20 mm or a rectangular rod with a side length of 10-12 mm.

[0024] In order to prevent the clamping jaws from interfering with the hemming of the automobile seat back foam, the clamping jaws of the clamping mechanism are clamped in the middle area of ​​the middle link of the automobile seat back frame.

[0025] In the present invention, after the headrest area of ​​the automobile seat back frame is obliquely inserted into the accommodation space on the top of the automobile seat back foam, the non-insertion area of ​​the automobile seat back frame is immediately controlled to be adjusted to a horizontal state, and then the toggle mechanism is released.

[0026] Beneficial effects: The present invention realizes efficient and intelligent assembly of automobile seat back foam and automobile seat back frame with a simple, low-cost and completely different technical route from the existing solutions. Taking the front seat of a passenger car as an example, it only takes about 20 seconds to successfully install a set of automobile seat back foam on the automobile seat back frame. Its efficiency is several times that of the existing assembly method, and it saves labor, fundamentally solving the problem of "requiring operators to repeatedly bend their waists or raise their arms to operate, which is labor-intensive". More importantly, the present invention cleverly arranges and fixes the automobile seat back foam horizontally, and uses a robot and its clamping mechanism to drive the automobile seat back frame to insert into the accommodation space at the top of the automobile seat back foam. Only one robot is required to cooperate with three sets of simple three-dimensional motion mechanisms to realize intelligent assembly, the required facility cost is low, and the problem of mutual interference between the mechanisms is cleverly avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the use status of the intelligent flexible clamping system in Example 1 (the car seat back foam moves to the working station);

[0028] Figure 2 for Figure 1 Schematic diagram of the top view;

[0029] Figure 3 Schematic diagram of the intelligent flexible clamping system in use in Example 1 (the edge of the foam of the car seat back is about to be folded open, and the clamping mechanism takes the material at the same time);

[0030] Figure 4 This is a schematic diagram of the intelligent flexible clamping system in use in Example 1 (the car seat back frame is inserted into place);

[0031] Figure 5 It is a partial schematic diagram of the intelligent flexible clamping system in Example 1, mainly showing the toggle mechanism;

[0032] Figure 6 It is a partial schematic diagram of the intelligent flexible clamping system in Example 2, which mainly embodies the toggle mechanism. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is described clearly and completely below in conjunction with the accompanying drawings. 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.

[0034] Example 1

[0035] Combination Figures 1 to 5 As shown, an intelligent flexible clamping system includes a conveying track 1, the conveying track 1 is used to convey the foam of the car seat back, a first toggle mechanism 11 and a second toggle mechanism 12 are symmetrically arranged on both sides of the working station of the conveying track 1, a third toggle mechanism 13 is arranged on one end side of the working station, a clamping mechanism 7 is also arranged beside the working station of the conveying track 1, and a second conveying track 6 is arranged on the other side of the clamping mechanism 7, and the second conveying track 6 is used to convey the car seat back frame 5; the conveying track 1, the first toggle mechanism 11, the second toggle mechanism 12, the third toggle mechanism 13 The driving mechanism 13 and the clamping mechanism 7 are both connected to the control system, which controls each mechanism to move according to a preset program; wherein, the first driving mechanism 11 and the second driving mechanism 12 are used to fold open and fix the side edge edging 2 of the automobile seat back foam, and the third driving mechanism 13 is used to fold open and fix the bottom edge edging 3 of the automobile seat back foam. The first driving mechanism 11, the second driving mechanism 12, the third driving mechanism 13 and the conveying track 1 frame together constitute a mechanism for clamping and positioning the automobile seat back foam, and the clamping mechanism 7 is used to clamp the workpiece and deliver it to a specified position.

[0036] In this embodiment, the clamping mechanism 7 is installed on the robot. The clamping mechanism 7 is used to clamp the car seat back frame 5 and send it to the working station on the one hand, and to clamp the car seat back covered with foam and send it to the next station on the other hand.

[0037] In this embodiment, Figure 5As shown, both the first toggling mechanism 11 and the second toggling mechanism 12 include: a hook claw portion 21, which is installed on a three-dimensional motion mechanism. The hook claw portion 21 can extend into the side edge binding 2 between the automobile seat back foam and the foam main body 8. The three-dimensional motion mechanism includes a lateral moving base, on which a vertical telescopic device is provided. The end of the telescopic rod of the vertical telescopic device is connected to a longitudinal telescopic device, and the front end of the telescopic rod of the longitudinal telescopic device is connected to the hook claw portion 21.

[0038] In this embodiment, as Figure 5 shown, the third toggling mechanism 13 includes: a lateral cylinder 31, the front end of the telescopic rod of the lateral cylinder 31 is connected to a vertical cylinder 32, the front end of the telescopic rod of the vertical cylinder 32 is connected to a longitudinal cylinder 33, the front end of the telescopic rod of the longitudinal cylinder 33 is connected to a lever 34, and the lever 34 can be inserted into the bottom edge binding 3 between the automobile seat back foam and the foam main body 8.

[0039] In this embodiment, the control system includes a memory, a processor, and a program stored on the memory and executable on the processor. When the processor executes the program, it can at least implement the following steps / functions:

[0040] S1, when the automobile seat back foam moves to the working station along with the conveying track 1, control the conveying track 1 to pause;

[0041] S2, when it is detected that the seat back foam is at the working station, control the first toggling mechanism 11 and the second toggling mechanism 12 to run synchronously, so that their hook claw portions 21 extend into the side edge binding 2 between the automobile seat back foam and the foam main body 8, and then control the hook claw portions 21 to move back to fold and fix the side edge binding 2 of the automobile seat back foam;

[0042] S3, control the third toggling mechanism 13 to run, so that the lever 34 is inserted into the bottom edge binding 3 between the automobile seat back foam and the foam main body 8, and then control the vertical cylinder 32 to move forward to fold and fix the bottom edge binding 3 of the automobile seat back foam;

[0043] S4, control the clamping mechanism 7 to run, hold the automobile seat back frame 5 and send it to the working station, so that the headrest area of the automobile seat back frame 5 is inserted into the accommodation space at the top of the automobile seat back foam, then control all the toggling mechanisms to release, and then control the clamping mechanism 7 to run, hold the automobile seat back covered with foam and send it to the next station.

[0044] An automatic assembly process for an automobile seat back using the intelligent flexible clamping system in this embodiment includes the steps of:

[0045] Step 1: Horizontally place the automotive seat back foam on the conveying track 1, with the side edge binding 2 and the bottom edge binding 3 of the seat back foam facing upward, and send the automotive seat back foam to the working station by means of the conveying track 1. Then control the conveying track 1 to pause. The state at this time is as shown in Figure 1 and Figure 2 shown;

[0046] Step 2: As shown in Figure 3 shown, first control the hook parts 21 of the first toggling mechanism 11 and the second toggling mechanism 12 to move to the target position A, so that the hook parts 21 extend into the space between the side edge binding 2 of the automotive seat back foam and the foam body 8. Then control the hook parts 21 of the first toggling mechanism 11 and the second toggling mechanism 12 to move back to the target position B, and turn over and fix the side edge binding 2 of the automotive seat back foam (in this process, it can be understood that the side edge binding 2 is clamped / pressed by means of the conveying track 1 and the hook parts 21);

[0047] Step 3: First control the vertical cylinder 32 to act, so that the lever 34 extends to the target height; then control the longitudinal cylinder 33 to act, so that the lever 34 is inserted into the space between the bottom edge binding 3 of the automotive seat back foam and the foam body 8, as shown in Figure 3 shown; then control the transverse cylinder 31 to act, so that the vertical cylinder 32, the longitudinal cylinder 33 and the lever 34 move forward synchronously to the target position C. At this time, the bottom edge binding 3 of the automotive seat back foam is turned over; then control the vertical cylinder 32 to move down to press the bottom edge binding 3 of the automotive seat back foam (in this process, it can be understood that the bottom edge binding 3 is clamped / pressed by means of the conveying track 1 and the lever 34);

[0048] Among them, the lever 34 is a round rod with a diameter of 16 mm, the length of the lever 34 is 1.3 times the width of the automotive seat back frame 5, and after the telescopic rod of the longitudinal cylinder 33 extends, the front end of the lever 34 does not extend beyond the side edge of the conveying track 1;

[0049] Step 4: Control the operation of the robot and the clamping mechanism 7 to clamp the automotive seat back frame 5 and send it to the working station (the jaws of the clamping mechanism 7 clamp the middle area of the middle connecting rod 4 of the automotive seat back frame 5), so that the area where the headrest of the automotive seat back frame 5 is located is inserted into the accommodation space at the top of the automotive seat back foam; after the area where the headrest of the automotive seat back frame 5 is located is obliquely inserted into the accommodation space at the top of the automotive seat back foam, immediately control the non-inserted area of the automotive seat back frame 5 to be adjusted to a horizontal state, and then release the toggling mechanism. At this time, the side edge binding 2 and the bottom edge binding 3 of the automotive seat back foam will reset under the action of the self-elastic force of the foam, so as to wrap the corresponding edge areas of the automotive seat back frame 5, as shown in Figure 4 shown; then control the operation of the robot and the clamping mechanism 7 to send the automotive seat back covered with foam to the next working station.

[0050] Example 2

[0051] An intelligent flexible clamping system, referring to Example 1 and combining Figure 6 As shown, the main difference from Example 1 is that the hook portion 21 has a folded section 22, the folded section 22 is basically parallel to the longitudinal cylinder 33, the front end of the folded section 22 faces the vertical cylinder 32, the length of the lever 34 is 1.2 times the width of the car seat back frame 5, and the lever 34 is a rectangular rod with a side length of 10 mm.

[0052] During the automatic assembly of the car seat back, a specific toggle mechanism is used to fold and fix the edge of the car seat back foam, and after being inserted into the car seat back frame, the elasticity of the edge of the car seat back foam is used to achieve covering.

[0053] The present invention realizes efficient and intelligent assembly of automobile seat back foam and automobile seat back frame by a simple, low-cost technical route that is completely different from the existing solutions. Taking the front seat of a passenger car as an example, it only takes about 20 seconds to successfully install a set of automobile seat back foam on the automobile seat back frame. Its efficiency is several times that of the existing assembly method, and it saves labor, fundamentally solving the problem of "requiring operators to repeatedly bend their waists or raise their arms to operate, which is labor-intensive". More importantly, the present invention cleverly arranges and fixes the automobile seat back foam horizontally, and uses a robot and its clamping mechanism to drive the automobile seat back frame to insert into the accommodation space at the top of the automobile seat back foam. Only one robot is required to cooperate with three sets of simple three-dimensional motion mechanisms to realize intelligent assembly. The required facility cost is low, and the problem of mutual interference among the mechanisms is cleverly avoided.

Claims

1. An intelligent flexible clamping system, comprising a conveying track (1), characterized in that: A first toggle mechanism (11) and a second toggle mechanism (12) are symmetrically arranged on both sides of a working station of the conveying track (1), a third toggle mechanism (13) is arranged on one end side of the working station, and a clamping mechanism (7) is also arranged beside the working station of the conveying track (1); the conveying track (1), the first toggle mechanism (11), the second toggle mechanism (12), the third toggle mechanism (13) and the clamping mechanism (7) are all connected to a control system, and the control system controls each mechanism to operate according to a preset program; wherein the conveying track (1) is used to convey horizontally arranged automobile seat back foam, the first toggle mechanism (11) and the second toggle mechanism (12) are used to fold open and fix the side edge wrapping (2) of the automobile seat back foam, the third toggle mechanism (13) is used to fold open and fix the bottom edge wrapping (3) of the automobile seat back foam, and the first toggle mechanism (11), the second toggle mechanism (12), the third toggle mechanism (13) and the conveying track (1) frame together constitute a support for the automobile seat back. The invention relates to a mechanism for clamping and positioning foam, wherein the clamping mechanism (7) is used to clamp the workpiece and send it to a specified position; the clamping mechanism (7) is installed on the robot, and the clamping mechanism (7) is used to clamp the automobile seat back frame (5) and send it to a working station on the one hand, and to clamp the automobile seat back covered with foam and send it to the next station on the other hand; the first toggle mechanism (11) and the second toggle mechanism (12) both include: a hook claw portion (21), the hook claw portion (21) is installed on the three-dimensional action mechanism, and the hook claw The portion (21) can extend between the side edge edging (2) and the foam body (8) of the automobile seat back foam; the third toggle mechanism (13) comprises: a transverse cylinder (31), the front end of the telescopic rod of the transverse cylinder (31) is connected to the vertical cylinder (32), the front end of the telescopic rod of the vertical cylinder (32) is connected to the longitudinal cylinder (33), the front end of the telescopic rod of the longitudinal cylinder (33) is connected to the toggle lever (34), and the toggle lever (34) can be inserted between the bottom edge edging (3) and the foam body (8) of the automobile seat back foam.

2. The intelligent flexible clamping system according to claim 1, wherein The control system includes a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, at least the following steps / functions can be implemented: S1, when the automobile seat back foam moves to the working station along the conveying track (1), the conveying track (1) is controlled to pause; S2, when it is detected that the seat back foam is located at the working position, the first toggle mechanism (11) and the second toggle mechanism (12) are controlled to operate synchronously, so that the hook claw portion (21) extends between the side edge wrapping (2) of the automobile seat back foam and the foam body (8), and then the hook claw portion (21) is controlled to move back, so that the side edge wrapping (2) of the automobile seat back foam is folded open and fixed; S3, controlling the third toggle mechanism (13) to operate, so that the toggle rod (34) is inserted between the bottom edge wrapping (3) of the automobile seat back foam and the foam body (8), and then controlling the vertical cylinder (32) to move forward, so that the bottom edge wrapping (3) of the automobile seat back foam is folded open and fixed; S4. Control the operation of the clamping mechanism (7), clamp the automotive seat backrest frame (5) and send it to the working station, insert the area where the headrest of the automotive seat backrest frame (5) is located into the accommodation space at the top of the automotive seat backrest foam, then control all the toggling mechanisms to release, and then control the operation of the clamping mechanism (7) to send the automotive seat backrest covered with foam to the next station.

3. An automatic assembly process for an automotive seat backrest using the intelligent flexible clamping system according to any one of claims 1-2, characterized in that the steps Including: Step 1. Horizontally place the automotive seat backrest foam on the conveying track (1), with the side edge binding (2) and the bottom edge binding (3) of the seat backrest foam facing upwards, and send the automotive seat backrest foam to the working station by means of the conveying track (1), and then control the conveying track (1) to pause. Step 2. First, control the claw parts (21) of the first toggling mechanism (11) and the second toggling mechanism (12) to move to the target position A, so that the claw parts (21) extend into the space between the side edge binding (2) and the foam main body (8) of the automotive seat backrest foam, and then control the claw parts (21) of the first toggling mechanism (11) and the second toggling mechanism (12) to move back to the target position B to turn over and fix the side edge binding (2) of the automotive seat backrest foam. Step 3. First, control the vertical cylinder (32) to act so that the lever (34) extends to the target height; then control the longitudinal cylinder (33) to act so that the lever (34) is inserted into the space between the bottom edge binding (3) and the foam main body (8) of the automotive seat backrest foam; then control the transverse cylinder (31) to act so that the vertical cylinder (32), the longitudinal cylinder (33) and the lever (34) move forward synchronously to the target position C. At this time, the bottom edge binding (3) of the automotive seat backrest foam is turned over; then control the vertical cylinder (32) to move down to press the bottom edge binding (3) of the automotive seat backrest foam. Step 4. Control the operation of the robot and the clamping mechanism (7), clamp the automotive seat backrest frame (5) and send it to the working station, insert the area where the headrest of the automotive seat backrest frame (5) is located into the accommodation space at the top of the automotive seat backrest foam; then control all the toggling mechanisms to release. At this time, the side edge binding (2) and the bottom edge binding (3) of the automotive seat backrest foam will reset under the action of the self-elastic force of the foam, so as to cover the corresponding edge area of the automotive seat backrest frame (5); then control the operation of the robot and the clamping mechanism (7) to send the automotive seat backrest covered with foam to the next station.

4. The automatic assembly process of the automotive seat backrest according to claim 3, characterized in that: The length of the lever (34) is 1.2 - 1.5 times the width of the automotive seat backrest frame (5), and after the telescopic rod of the longitudinal cylinder (33) extends, the front end of the lever (34) does not extend beyond the side edge of the conveying track (1).

5. The automatic assembly process of the car seat backrest according to claim 4, characterized in that: The lever (34) is a round rod with a diameter of 15 - 20 mm or a rectangular rod with a side length of 10 - 12 mm.

6. The automatic assembly process of an automotive seat backrest according to claim 5, characterized in that: The jaws of the clamping mechanism (7) clamp the middle part of the middle connecting rod of the automotive seat backrest frame (5).

7. The automatic assembly process of an automotive seat backrest according to claim 6, characterized in that: After the area where the headrest of the automotive seat backrest frame (5) is located is obliquely inserted into the accommodation space at the top of the automotive seat backrest foam, immediately control the non-inserted area of the automotive seat backrest frame (5) to be adjusted to the horizontal state, and then release the toggling mechanism.

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