Bending forming device and method thereof

Abstract

The invention discloses a bending forming device and a method thereof. The device comprises a base, a back mesh positioning and clamping mechanism, at least two transverse supporting bone steel wire clamping mechanisms and a transverse supporting bone steel wire extension section bending mechanism. The method is suitable for the bending forming device, the stepped height design is adopted to enable the back mesh to be in an actual assembly inclined posture, and accurate alignment of bending stations is guaranteed. The back net is positioned through multi-point flexible pressing, and the arc-shaped grooves, the parallelogram connecting rods and the inclined plane support cooperate to prevent scratches and stably position the back net. And the steel wire is rigidly limited through the cross groove and the locking push column, so that shifting and swinging during bending are avoided. The bending mechanism controls the angle through motor gear transmission and mechanical limiting, and stress damage of the steel wire is avoided through an arc-shaped bending block and a guide block. Various bending structures can be flexibly formed by adjusting parameters, different assembling requirements are met, and the precision and the adaptability are far better than those of a traditional mode.

Description

Technical Field

[0001] This invention relates to the field of mechanical device design technology, and in particular to bending forming devices and methods thereof. Background Technology

[0002] As the core support component of the car seat backrest, the seat back mesh is mainly composed of a mesh fabric and crisscrossing steel wires. The assembly stability of the transverse steel wires directly determines the support strength, comfort, and service life of the seat backrest. To achieve a reliable connection between the transverse steel wires and the plastic frame or metal bracket of the seat backrest, the extended sections of the transverse steel wires need to be bent into hook, snap, or fitted structures. These bent structures are then embedded into pre-reserved slots or positioning holes in the frame, limiting the axial movement and radial sway of the steel wires during vehicle travel, seat backrest adjustments, and passenger leaning. This prevents the mesh fabric from collapsing, wrinkling, or making abnormal noises due to loose steel wires, ensuring both the user experience and structural stability of the seat.

[0003] Currently, the bending of the transverse support wires of automotive seat backrests mainly relies on two methods: one is traditional manual bending combined with simple tooling for positioning, and the other is processing using semi-automatic bending equipment. As the automotive manufacturing industry continues to demand higher assembly precision, production efficiency, and product consistency for seat components, the technological difficulty and precision control requirements for wire bending are also increasing. Existing processing methods are gradually revealing many shortcomings in practical applications, making it difficult to meet the needs of large-scale, high-precision production.

[0004] In existing manual bending or simple tooling processing methods, the positioning of the back net and horizontal support wires largely relies on operator experience, lacking a comprehensive and rigid positioning mechanism. Some semi-automatic equipment can only achieve rough positioning of the back net in a single direction, failing to precisely fix the back net's horizontal and vertical bars and the areas where the wires are wrapped with the mesh in different areas, and not considering the actual tilt posture of the back net during assembly, resulting in significant alignment deviations between the wire extension sections and the bending station. During processing, the back net is prone to displacement and swaying, and the wires are prone to axial movement or radial oscillation, leading to poor consistency in the bending structure position and angle of products in the same batch, low compatibility with subsequent assembly with the seat frame, and a high rework rate.

[0005] Meanwhile, existing bending methods rely on manual application of external force to bend the steel wire. The bending angle and curvature depend entirely on the operator's feel, making it impossible to precisely control bending parameters. This easily leads to problems such as bending angle deviation, irregular curvature, and stress concentration at the bend, affecting assembly accuracy and potentially causing micro-cracks at the bend, reducing support strength and posing safety hazards. Some semi-automatic equipment uses cylinders to directly drive the bending block for stamping bending, lacking precise guiding and limiting structures. During bending, the steel wire easily deviates from the preset trajectory, and the bending angle cannot be flexibly adjusted according to needs. This makes it difficult to adapt to the processing requirements of various bending structures such as hooks and clips, limiting its applicability. Summary of the Invention

[0006] To solve the above-mentioned technical problems, one of the technical solutions adopted by the present invention is: a bending and forming device, which is used to bend the extended section of the transverse support wires on the car seat back mesh to form a hook-shaped, snap-fit, or fitted bending structure, so as to embed into the reserved slots or positioning holes of the plastic frame or metal bracket of the seat back. This bending structure can limit the axial and radial displacement of the transverse support wires when the vehicle is moving, the seat back is adjusted, or the passenger leans against it, so as to prevent the mesh from collapsing, wrinkling, or making abnormal noise due to loose wires; the device includes:

[0007] The base, which supports all the components of the device; Back net positioning and clamping mechanism, which is used to clamp the car seat back net onto the back net positioning and clamping mechanism; At least two transverse support wire clamping mechanisms are used to position and clamp the corresponding transverse support wires at the points where they are wrapped with the back mesh. A bending mechanism for the extension section of a transverse support wire is used to form a hook-shaped, snap-shaped, or fitted bending structure for the extension section of the transverse support wire. The back net positioning and clamping mechanism, the transverse support wire clamping mechanism, and the transverse support wire extension bending mechanism are all mounted on the base. The transverse support wire clamping mechanism is located in the middle of the back net positioning and clamping mechanism. The transverse support wire extension bending mechanism is located on the outside of the corresponding transverse support wire clamping mechanism. The height of the back net positioning and clamping mechanism and the height of the transverse support wire clamping mechanism decrease in a stepped manner, so that the car seat back net and the base are tilted.

[0008] Furthermore, the back mesh positioning and clamping mechanism includes: A transverse support and clamping structure is used to support the crossbars of the corresponding car seat back net and to clamp the crossbars of the car seat back net. At least two vertical support clamping structures are used to support the vertical bars of the corresponding car seat back net, respectively; The two vertical support and clamping structures are arranged symmetrically to each other; the height of the horizontal support and clamping structure is higher than the height of the horizontal support wire clamping mechanism, and the height of the horizontal support wire clamping mechanism is higher than the height of the vertical support and clamping structure.

[0009] Furthermore, the lateral support and clamping structure includes: At least two transverse support mounting posts are vertically mounted on the base; each of the transverse support mounting posts is provided with a transverse support groove; the crossbar of the car seat back net is located in the corresponding transverse support groove; A transverse clamping mounting column is vertically mounted on the base; the transverse clamping mounting column is located between two transverse support mounting columns. A transverse clamping cylinder is mounted on a transverse clamping mounting post; A transverse pressing block, one end of which is hinged to the telescopic end of the transverse pressing cylinder; A laterally flipping mounting block is mounted on a lateral clamping cylinder; At least two parallel lateral flip-up connecting blocks are used to connect the lateral flip-up mounting block and the lateral upper clamping block; one end of the two parallel lateral flip-up connecting blocks is coaxially hinged to the lateral flip-up mounting block, and the other end is coaxially hinged to the lateral upper clamping block. Among them, the transverse pressing cylinder drives the transverse pressing block to press the crossbar of the car seat back net, so that the crossbar of the car seat back net is in close contact with the surface of the transverse support mounting column.

[0010] Furthermore, the vertical support and clamping structure includes: A vertically downward pressing block is vertically mounted on the base; the upper surface of the vertically downward pressing block is an inclined surface; the vertical rod of the car seat back net is located on the vertically downward pressing block; A vertical clamping cylinder is installed in an inclined groove in the base; the bottom surface of the inclined groove is parallel to the upper surface of the vertical clamping block. A vertically pressing block, one end of which is hinged to the telescopic end of a vertically pressing cylinder; A vertically flipping mounting block is installed on a vertically clamping cylinder; At least two parallel vertical flip-up connecting blocks are used to connect the vertical flip-up mounting block and the vertical pressing block; one end of the two parallel vertical flip-up connecting blocks is coaxially hinged to the vertical flip-up mounting block, and the other end is coaxially hinged to the vertical pressing block. The vertical pressing cylinder drives the vertical pressing block to press the vertical rod of the car seat back net, so that the vertical rod of the car seat back net is in close contact with the upper surface of the vertical pressing block.

[0011] Furthermore, the transverse support wire clamping mechanism includes: A transverse support wire clamping and mounting column is fixedly mounted on the base; the upper surface of the transverse support wire clamping and mounting column is an inclined surface. The transverse support wire support groove is located on the upper surface of the transverse support wire clamping and mounting column; the transverse support wire and the vertical rod of the back net are wrapped together, and the transverse support wire is located in the transverse part of the transverse support wire support groove, and the vertical rod of the back net is located in the vertical part of the transverse support wire support groove. A locking structure is used to lock the vertical rods of the back net into the transverse support wire groove; the locking structure is located on one side of the transverse support wire groove.

[0012] Furthermore, the locking structure includes: The locking mounting plate is fixedly installed on the transverse support steel wire clamping mounting column; A locking cylinder is mounted on a locking mounting plate; the telescopic end of the locking cylinder is perpendicular to the vertical rod of the back net. A locking push plate is installed on the telescopic end of the locking cylinder; A locking guide plate is mounted on the locking push plate and is parallel to the locking push plate; At least two parallel locking push pins, one end of which is mounted on a locking guide plate; The locking cylinder drives the locking push pin to extend into the positioning hole of the transverse support wire support groove, and locks the vertical rod of the back net into the transverse support wire support groove.

[0013] Furthermore, the bending mechanism for the extension section of the transverse support wire includes: The first bending structure is used to bend the first bending portion of the transverse support wire extension upward. The second bending structure is used to bend the second bending part of the transverse support wire extension section downward after the first bending part of the transverse support wire extension section has completed the upward bending. The first bending structure is mounted on the base; the second bending structure is mounted on the first bending structure.

[0014] Furthermore, the first bending structure includes: The first bent mounting post is fixedly mounted on the base; A bending push cylinder is fixedly mounted on the first bending mounting column; The bending push slide rail is mounted on the bending push cylinder; The bending push plate has one end mounted on one end of the bending push slide rail and the other end mounted on the bending push cylinder; The first bending mounting body is installed at the other end of the bending push slide rail; The first bending mounting shaft has one end fixedly mounted on the first bending mounting body and is perpendicular to the first bending mounting body; A fan-shaped bending and rotating plate, the center of which is mounted on a first bending mounting shaft via a bearing; the fan-shaped bending and rotating plate 4017 has a first driven tooth on its side surface near the center; The first guide mounting plate is fixedly mounted on the first bent mounting shaft at its center. The first guide block is fixedly mounted on the first guide mounting plate; The first limiting block is fixedly installed on the first guide mounting plate, and a first gap is formed between the first guide block and the first limiting block; the extension section of the transverse support steel wire is located within the first gap; The first bending block is mounted on the fan-shaped bending rotating plate; the first bending block is provided with a first bending groove; The first bending motor is mounted on the first bending mounting body; A first drive gear is mounted on the rotating end of a first bending motor; the first drive gear meshes with a first driven gear. The first limiting post is fixedly installed on the base; the first limiting post has a first limiting groove; the width of the first limiting groove is the same as the thickness of the fan-shaped bending and rotating plate. The first bending motor drives the first bending block on the fan-shaped bending rotating plate to rotate upward, causing the extension section of the transverse support steel wire located in the first gap to bend upward along the arc edge of the first guide block to form the first bending part; when the edge of the fan-shaped bending rotating plate moves into the first limiting groove, it stops bending the extension section of the transverse support steel wire upward and maintains this state.

[0015] Furthermore, the second bending structure includes: The second bending mounting block is installed on the bending push slide rail; The second bending mounting body is mounted on the second bending mounting block; The second bending mounting shaft has one end fixedly mounted on the second bending mounting body; the second bending mounting shaft is inclinedly mounted on the second bending mounting block; The second bending and rotating plate has its center mounted on the second bending mounting shaft via a bearing; a second driven tooth is provided on the side surface of the second bending and rotating plate. The second guide block is fixedly mounted on the second bending mounting shaft at its center; the second guide block is located outside the second bending rotating plate. The second bending block is mounted on the second bending rotating plate; the second bending block is provided with a second bending groove; a second gap is formed between the second bending groove and the second guide block, and the extension section of the transverse support steel wire is located in the second gap; The second bending motor is mounted on the second bending mounting body; The second drive gear is mounted on the rotating end of the second bending motor; the second drive gear meshes with the second driven gear. The second bending motor drives the second bending block on the second bending rotating plate to move downward, causing the extended section of the transverse support steel wire located in the second gap to bend downward along the arc edge of the second guide block, forming the second bending section.

[0016] Another technical solution adopted by the present invention is a bending method, which is applicable to the above-mentioned bending forming device, and the method includes: S1. Confirm that the base is stable and fixed, and that the back net positioning clamping mechanism, the transverse support wire clamping mechanism, and the transverse support wire extension bending mechanism are all in their initial reset state; check that the extension and retraction of the transverse clamping cylinder, vertical clamping cylinder, locking cylinder, and bending push cylinder are normal, and that the first bending motor and the second bending motor operate without abnormalities; confirm that there are no foreign objects in the first limit groove, each support groove, and bending groove to ensure smooth subsequent operations; S2. Place the car seat back net to be processed onto the back net positioning and clamping mechanism: Embed the horizontal bar of the back net into the horizontal support groove of the horizontal support mounting column, so that the horizontal bar fits against the inner wall of the horizontal support groove; Place the two vertical bars of the back net on the inclined surfaces of the vertical downward clamping blocks of the two symmetrically arranged vertical support clamping structures, ensuring that the vertical bars are placed flat; At the same time, adjust the position of the back net so that the wrapping point of the horizontal support wire and the back net vertical bar is aligned with the horizontal support wire support groove of the horizontal support wire clamping mechanism; S3. Activate the transverse clamping cylinder. The telescopic end of the transverse clamping cylinder drives the transverse upper clamping block to move. Under the guidance of the transverse flipping connecting block, the transverse upper clamping block smoothly flips and clamps the crossbar of the back net, so that the crossbar is in close contact with the surface of the transverse support mounting column, thus completing the positioning and fixing of the crossbar; S4. Simultaneously start the vertical clamping cylinders of the two vertical support clamping structures. The telescopic end of the vertical clamping cylinder drives the vertical clamping block to flip and press down with the cooperation of the vertical flipping connecting block, pressing the vertical rod of the back net onto the inclined surface of the vertical clamping block, thus completing the overall positioning and clamping of the back net. At this time, the back net is in an inclined state and fits the device due to the stepped height difference between the back net positioning and clamping mechanism and the transverse support wire clamping mechanism. S5. Activate the locking cylinder of the transverse support wire clamping mechanism. The telescopic end of the locking cylinder pushes the locking push plate and the locking guide plate to move, causing at least two parallel locking push pins to extend into the positioning holes of the transverse support wire support groove. At this time, the entanglement between the transverse support wire and the back net vertical rod, as well as the transverse support wire itself, are all confined to the transverse part of the transverse support wire support groove, while the back net vertical rod is confined to the vertical part. The locking push pins lock and fix the vertical rod, preventing the transverse support wire from shifting during subsequent bending. S6. Confirm that the extension of the transverse support steel wire passes through the first gap formed by the first guide block and the first limiting block, and corresponds to the first bending groove of the first bending block. S7. Start the first bending motor. The first bending motor drives the first drive gear to rotate. Through the meshing transmission between the first drive gear and the first driven gear on the fan-shaped bending rotating plate, the fan-shaped bending rotating plate is driven to rotate upward around the first bending mounting axis. S8. The fan-shaped bending rotating plate drives the first bending block to rotate upward synchronously. Under the constraint of the first bending groove, the extended section of the transverse support steel wire bends upward along the arc edge of the first guide block. When the edge of the fan-shaped bending rotating plate enters the first limiting groove of the first limiting post, the first bending motor stops running, maintains the current state, and completes the forming of the first bending part. S9. After confirming the formation of the first bend, the subsequent part of the transverse support wire extension enters the second gap formed by the second bending groove of the second guide block and the second bending block. S10. Start the second bending motor. The second bending motor drives the second drive gear to rotate. Through the meshing transmission between the second drive gear and the second driven gear on the second bending rotating plate, the second bending rotating plate is driven to rotate downward around the second bending mounting axis. S11. The second bending rotating plate drives the second bending block to move downward synchronously. Under the constraint of the second bending groove, the extended section of the transverse support steel wire bends downward along the arc edge of the second guide block to form the second bending part. According to the design requirements, by controlling the running angle of the second bending motor, the two bending structures are made to form a hook-shaped, snap-fit, or fit-fitting target bending structure, and then the second bending motor is stopped. S12. Sequentially control the second bending motor and the first bending motor to reverse, driving the second bending rotating plate and the fan-shaped bending rotating plate back to their initial positions; start the bending push cylinder to drive the bending push slide rail and each bending component to reset. S13. Sequentially control the locking cylinder, vertical pressing cylinder, and horizontal pressing cylinder to reset, the locking push column exits the positioning hole, and the vertical pressing block and horizontal pressing block loosen their pressing on the back net. S14. Remove the bent car seat back net from the device to complete a single bending operation; if continuous processing is required, repeat S2-S13.

[0017] The present invention has the following beneficial effects: (1) The back net positioning clamping mechanism and the transverse support steel wire clamping mechanism with stepped height design make the back net present an inclined posture consistent with the actual assembly state after positioning, ensuring that the extended section of the transverse support steel wire is accurately aligned with the bending station, and ensuring the accuracy of the bending reference from the spatial posture.

[0018] (2) The back net positioning and clamping mechanism adopts a multi-point positioning and flexible clamping design. The horizontal support and clamping structure achieves stable clamping of the horizontal bar through the clamping block driven by the arc support groove and the parallelogram connecting rod. The vertical support and clamping structure achieves symmetrical positioning of the vertical bar through the inclined support and the inclined clamping cylinder. While avoiding scratches and pressure damage to the back net, it also eliminates the displacement and shaking of the back net during the processing.

[0019] (3) The transverse support wire clamping mechanism uses a cross-shaped support groove and a locking push column to rigidly fix the wire and the back net vertical rod to precisely limit the position of the wire and the back net vertical rod. The wire position is indirectly locked by fixing the vertical rod, which completely avoids the axial movement and radial swing of the wire during the bending process and provides a stable reference for high-precision bending.

[0020] (4) The bending mechanism adopts a dual control method of motor gear meshing transmission and mechanical limit. The first bending structure drives the bending block through the fan-shaped rotating plate, and the arc surface of the guide block realizes the first upward bending of the steel wire. The bending angle is precisely controlled by the limit groove of the limit post. The second bending structure completes the second downward bending on the same principle. The angle of the two bending can be flexibly adjusted by the motor parameters and the limit structure. The bending accuracy is much higher than that of the simple bending method driven by manual or cylinder.

[0021] (5) Both the bending block and the guide block adopt an arc-shaped structure design that matches the diameter of the steel wire, so that the steel wire always conforms to the arc surface and deforms smoothly during the bending process, avoiding defects such as steel wire cracks and deformation caused by stress concentration, and ensuring the mechanical properties and appearance consistency of the bending structure.

[0022] (6) By adjusting the angle and stroke parameters of the two bends, various bending structures such as hook, snap, and fit can be flexibly formed to meet the assembly requirements of different seat back plastic frames or metal brackets, and the adaptability is strong. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the bending and forming device of the present invention.

[0024] Figure 2 This is a schematic diagram of the back net positioning clamping mechanism and the transverse support wire clamping mechanism.

[0025] Figure 3 This is a schematic diagram of a lateral support and clamping structure.

[0026] Figure 4 This is a schematic diagram of the vertical support and clamping structure.

[0027] Figure 5 This is a schematic diagram of the transverse support wire clamping mechanism.

[0028] Figure 6 for Figure 5 Rear view.

[0029] Figure 7 This is a schematic diagram of the bending mechanism for the extension section of the transverse support steel wire.

[0030] Figure 8 This is a structural diagram of the first guide block, the first limiting block, the second guide block, and the second bending block.

[0031] Figure 9 This is a schematic diagram of the structure of the first bending block.

[0032] Figure 10 This is a schematic diagram of the second bending block.

[0033] The components include: 1. Base; 2. Back net positioning and clamping mechanism; 201. Horizontal support and clamping structure; 2011. Horizontal support mounting column; 2012. Horizontal support groove; 2013. Horizontal clamping mounting column; 2014. Horizontal clamping cylinder; 2015. Horizontal upper clamping block; 2016. Horizontal flipping mounting block; 2017. Horizontal flipping connecting block; 202. Vertical support and clamping structure; 2021. Vertical lower clamping block; 2022. Vertical clamping cylinder; 2023. Vertical upper clamping... 1. Block; 2024. Vertical flip-up mounting block; 2025. Vertical flip-up connecting block; 3. Horizontal support wire clamping mechanism; 301. Horizontal support wire clamping mounting column; 302. Horizontal support wire support groove; 303. Locking structure; 3031. Locking mounting plate; 3032. Locking cylinder; 3033. Locking push plate; 3034. Locking guide plate; 3035. Locking push column; 4. Horizontal support wire extension section bending mechanism; 401. First bending structure; 4011. First bending... 4012. Bending mounting column; 4013. Bending push cylinder; 4014. Bending push slide rail; 4015. Bending push plate; 4016. First bending mounting body; 4017. First bending mounting shaft; 4018. Fan-shaped bending rotating plate; 4019. First driven gear; 4010. First guide mounting plate; 40111. First guide block; 40111. First limit block; 40112. First bending block; 40113. First bending groove; 40114. First bending motor; 40 115. First drive gear; 40116. First limiting post; 40117. First limiting groove; 402. Second bending structure; 4021. Second bending mounting block; 4022. Second bending mounting body; 4023. Second bending mounting shaft; 4024. Second bending rotating plate; 4025. Second driven gear; 4026. Second guide block; 4027. Second bending block; 4028. Second bending groove; 4029. Second bending motor; 40210. Second drive gear. Detailed Implementation

[0034] The technical solutions of the bending and forming apparatus and method provided by the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] Example 1 like Figures 1-10 As shown, a bending and forming device is used to bend the extended sections of the transverse support wires on the car seat back mesh to form hook-shaped, snap-fit, or fitted bending structures, which are then embedded in the reserved slots or positioning holes of the plastic frame or metal bracket of the seat back. This bending structure can limit the axial and radial displacement of the transverse support wires when the vehicle is moving, the seat back is adjusted, or the passenger is leaning against it, preventing the mesh from collapsing, wrinkling, or making abnormal noises due to loose wires. The device includes a base 1, which is used to support all the components of the device.

[0036] Specifically, base 1 has a flat mounting reference surface for fixing and mounting all functional components such as the back net positioning clamping mechanism 2, the transverse support wire clamping mechanism 3, and the transverse support wire extension bending mechanism 4. Adjustable anchor bolts are provided around the bottom of base 1 to allow for leveling according to the on-site installation environment. Additionally, mounting holes are pre-drilled at the bottom for fixing to the production line floor, enabling precise docking and fixing of the device to the production line and preventing equipment vibration from affecting processing accuracy during operation.

[0037] The device also includes a back net positioning and clamping mechanism 2, which is used to clamp the car seat back net onto the back net positioning and clamping mechanism 2.

[0038] Specifically, the back net positioning and clamping mechanism 2 functions to quickly and securely clamp the automotive seat back net to be processed at the preset processing position, ensuring that the extended sections of the transverse support steel wires on the back net can be accurately aligned with the processing station of the subsequent bending mechanism, thus providing a fundamental guarantee for bending accuracy. This mechanism, through its multi-point positioning and flexible clamping design, achieves secure clamping while avoiding damage to the back net fabric.

[0039] Furthermore, the back net positioning and clamping mechanism 2 includes a lateral support and pressing structure 201, which is used to support the crossbar of the corresponding car seat back net and press the crossbar of the car seat back net.

[0040] Specifically, the transverse support and clamping structure 201 is used to support, clamp, and position the crossbars of the car seat backrest net. Through the synergistic effect of bottom support and top clamping, it ensures that the backrest net crossbars maintain a fixed posture throughout the entire processing, without displacement or shaking. Its structural design fully considers the structural characteristics of the backrest net crossbars, possessing good adaptability and positioning accuracy.

[0041] Furthermore, the lateral support pressing structure 201 includes: at least two lateral support mounting columns 2011, which are vertically mounted on the base 1; each of the lateral support mounting columns 2011 is provided with a lateral support groove 2012; the crossbar of the car seat back net is located in the corresponding lateral support groove 2012.

[0042] Specifically, the horizontal support mounting column 2011, serving as the bottom support component of the back netting crossbar, is vertically installed on the pre-set mounting holes of the base 1 by bolt fastening, ensuring that the top surfaces of all horizontal support mounting columns 2011 are on the same horizontal plane. Each horizontal support mounting column 2011 has a horizontal support groove 2012 cut along its length at its top. The cross-sectional shape of this support groove adopts an arc-shaped structure matching the back netting crossbar, and the groove edges are rounded to avoid scratching the back netting fabric. The width and depth of the support groove are precisely calculated to ensure that the back netting crossbar can be stably placed in the groove, achieving initial positioning.

[0043] The transverse support and clamping structure 201 further includes: a transverse clamping mounting column 2013, which is vertically mounted on the base 1; the transverse clamping mounting column 2013 is located between two transverse support mounting columns 2011.

[0044] Specifically, the transverse clamping mounting column 2013 serves as the mounting carrier for the transverse clamping power component. It is vertically mounted on the base 1 by bolts and precisely positioned in the middle of the two transverse support mounting columns 2011 to ensure that the clamping force can be evenly applied to the middle area of ​​the back net crossbar, thus avoiding deformation of the crossbar due to uneven force.

[0045] The lateral support and clamping structure 201 further includes a lateral clamping cylinder 2014, which is mounted on the lateral clamping mounting column 2013.

[0046] Specifically, the transverse clamping cylinder 2014, serving as the power source for transverse clamping, is fixedly installed on top of the transverse clamping mounting column 2013 via a flange connection. The cylinder's stroke and output pressure can be adjusted according to the material and thickness of the back mesh. Equipped with a buffer device, it ensures smooth clamping action and prevents impact loads from damaging the back mesh.

[0047] The lateral support and clamping structure 201 further includes: a lateral upper clamping block 2015, one end of which is hinged to the telescopic end of the lateral clamping cylinder 2014.

[0048] Specifically, the transverse pressing block 2015, as a pressing component that directly contacts the back net crossbar, has an arc-shaped groove on its bottom surface that matches the back net crossbar, increasing the contact area with the crossbar and improving pressing stability. One end of the transverse pressing block 2015 is hinged to the telescopic end of the transverse pressing cylinder 2014 via a hinge shaft, which can achieve a certain angle of rotation, ensuring that the bottom surface can completely fit the surface of the crossbar during pressing.

[0049] The lateral support and clamping structure 201 further includes a lateral flipping mounting block 2016, which is mounted on the lateral clamping cylinder 2014.

[0050] Specifically, the lateral flip mounting block 2016 serves as the mounting base for the flip connecting component. It is fixedly mounted on the cylinder body of the lateral clamping cylinder 2014 by bolts. Its position corresponds to the lateral upper clamping block 2015 and is used to install the lateral flip connecting block 2017.

[0051] The lateral support and clamping structure 201 further includes: at least two parallel lateral flipping connecting blocks 2017, which are used to connect the lateral flipping mounting block 2016 and the lateral upper clamping block 2015; one end of the two parallel lateral flipping connecting blocks 2017 is coaxially hinged to the lateral flipping mounting block 2016, and the other end is coaxially hinged to the lateral upper clamping block 2015; wherein, the lateral clamping cylinder 2014 drives the lateral upper clamping block 2015 to clamp the crossbar of the car seat back net, so that the crossbar of the car seat back net is in close contact with the surface of the lateral support mounting column 2011.

[0052] Specifically, the lateral flipping connecting block 2017 is used to connect the lateral flipping mounting block 2016 and the lateral upper pressing block 2015, forming a parallelogram linkage mechanism to ensure that the lateral upper pressing block 2015 maintains a horizontal posture during the flipping process. One end of the two parallel lateral flipping connecting blocks 2017 is mounted on the lateral flipping mounting block 2016 via a coaxial hinge shaft, and the other end is mounted on the lateral upper pressing block 2015 via another set of coaxial hinge shafts.

[0053] In this embodiment, after the back net crossbar is placed in the transverse support groove 2012, the transverse pressing cylinder 2014 is activated, the telescopic end extends, and the transverse upper pressing block 2015 is driven to rotate smoothly and move downward through the parallelogram linkage mechanism, finally pressing the back net crossbar tightly in the transverse support groove 2012, so as to achieve precise positioning and stable clamping of the back net crossbar.

[0054] The back net positioning and clamping mechanism 2 further includes at least two vertical support and clamping structures 202, which are used to support the vertical bars of the corresponding car seat back net respectively. The two vertical support and clamping structures 202 are arranged symmetrically to each other; the height of the horizontal support and clamping structure 201 is higher than the height of the horizontal support wire clamping mechanism 3, and the height of the horizontal support wire clamping mechanism 3 is higher than the height of the vertical support and clamping structure 202.

[0055] Specifically, the vertical support and clamping structure 202 is used to support and assist in positioning the vertical rods of the car seat back net, working in conjunction with the horizontal support and clamping structure 201 to form a comprehensive positioning of the entire back net. This structure uses at least two symmetrically arranged units to ensure balanced force on the back net, with each unit supporting one back net vertical rod.

[0056] Furthermore, the vertical support and clamping structure 202 includes: a vertically downward clamping block 2021, which is vertically mounted on the base 1; the upper surface of the vertically downward clamping block 2021 is an inclined surface; the vertical rod of the car seat back net is located on the vertically downward clamping block 2021.

[0057] Specifically, the vertically pressing block 2021 serves as the bottom support component for the back net vertical pole, and it is vertically mounted on the base 1 by bolts. Its top surface is machined into an inclined surface that matches the installation angle of the back net vertical pole. The inclined surface is polished and coated with anti-slip rubber pads, which not only ensures that the back net vertical pole is placed stably, but also increases friction to prevent the vertical pole from sliding; at the same time, the rubber pads can prevent direct contact between the metal and the back net fabric, preventing scratches on the back net.

[0058] The vertical support and clamping structure 202 further includes a vertical clamping cylinder 2022, which is installed in the inclined groove of the base 1; the bottom surface of the inclined groove is parallel to the upper surface of the vertical clamping block 2021.

[0059] Specifically, the vertical clamping cylinder 2022, serving as the power source for vertical clamping, is installed within a pre-set inclined groove in the base 1. The bottom surface of this inclined groove is parallel to the upper surface of the vertical clamping block 2021, ensuring that the cylinder's extension and retraction direction matches the axial direction of the vertical rod, allowing the clamping force to be precisely applied to the vertical rod. Simultaneously, the vertical clamping cylinder 2022 is also equipped with a buffer device to achieve smooth clamping.

[0060] The vertical support and clamping structure 202 further includes a vertical clamping block 2023, one end of which is hinged to the telescopic end of the vertical clamping cylinder 2022.

[0061] Specifically, the vertical clamping block 2023, as a clamping component that directly contacts the vertical pole of the back net, has its clamping surface machined into an arc-shaped groove that matches the surface of the vertical pole, and is fitted with an anti-slip rubber pad to improve clamping stability and protect the back net fabric. One end of the vertical clamping block 2023 is hinged to the telescopic end of the vertical clamping cylinder 2022 via a hinge shaft, which can adapt to the tilt angle of the vertical pole and ensure that the clamping surfaces are fully in contact.

[0062] The vertical support and clamping structure 202 further includes a vertical flipping mounting block 2024, which is mounted on the vertical clamping cylinder 2022.

[0063] Specifically, the vertical flip mounting block 2024 is similar in structure to the horizontal flip mounting block 2016. It is fixedly mounted on the cylinder body of the vertical clamping cylinder 2022 by bolts. The vertical flip mounting block 2024 is used to install the vertical flip connecting block 2025.

[0064] The vertical support and pressing structure 202 further includes: at least two parallel vertical flip connecting blocks 2025, which are used to connect the vertical flip mounting block 2024 and the vertical pressing block 2023; one end of the two parallel vertical flip connecting blocks 2025 is coaxially hinged to the vertical flip mounting block 2024, and the other end is coaxially hinged to the vertical pressing block 2023; wherein, the vertical pressing cylinder 2022 drives the vertical pressing block 2023 to press the vertical rod of the car seat back net, so that the vertical rod of the car seat back net is in close contact with the upper surface of the vertical pressing block 2021.

[0065] Specifically, the vertical flipping connecting block 2025 uses at least two parallel links to form a parallelogram linkage mechanism, connecting the vertical flipping mounting block 2024 and the vertical pressing block 2023, ensuring that the vertical pressing block 2023 always maintains an inclined posture that matches the vertical rod during the flipping process.

[0066] In this embodiment, after the back net vertical rod is placed on the inclined surface of the vertically downward pressing block 2021, the vertical pressing cylinder 2022 is activated, the telescopic end extends, and the vertically upward pressing block 2023 is driven to rotate smoothly and move diagonally downward through the parallelogram linkage mechanism, so as to press the back net vertical rod tightly on the inclined surface of the vertically downward pressing block 2021, thereby achieving precise positioning and stable clamping of the back net vertical rod.

[0067] Meanwhile, the back net positioning and clamping mechanism 2, the transverse support wire clamping mechanism 3, and the vertical support clamping structure 202 are designed with a stepped height: the transverse support and clamping structure 201 is the tallest, the transverse support wire clamping mechanism 3 is the next tallest, and the vertical support and clamping structure 202 is the shortest. This stepped design allows the car seat back net to present an inclined posture consistent with the actual assembly state after positioning, ensuring that the extended section of the transverse support wire can naturally extend to the processing station of the bending mechanism, thus guaranteeing the accuracy of subsequent bending processing.

[0068] The device also includes at least two transverse support wire clamping mechanisms 3, which are used to position and clamp the corresponding transverse support wires at the points where they are wrapped with the back net.

[0069] Specifically, the transverse support wire clamping mechanism 3 is used to precisely position and clamp the transverse support wire at the connection point between the transverse support wire and the back net. Its function is to fix the reference position of the transverse support wire, prevent displacement of the wire during bending, and ensure the dimensional and positional accuracy of the bent structure. At least two transverse support wire clamping mechanisms 3 are used, symmetrically installed on the base 1 corresponding to the transverse support wires on both sides of the back net, and located in the middle area of ​​the back net positioning and clamping mechanism 2. Furthermore, the transverse support wire clamping mechanism 3 includes: a transverse support wire clamping mounting column 301, which is fixedly mounted on the base 1; the upper surface of the transverse support wire clamping mounting column 301 is an inclined surface.

[0070] Specifically, the transverse support wire clamping mechanism 3 serves as the mounting base for the entire clamping mechanism, and it is fixedly mounted on the base 1 with bolts. Its top surface is machined into an inclined surface that matches the tilting posture of the back net, ensuring that the winding point between the transverse support wire and the back net can be stably placed on the top surface and is consistent with the processing direction of the subsequent bending mechanism.

[0071] The transverse support wire clamping mechanism 3 further includes: a transverse support wire support groove 302, which is located on the upper surface of the transverse support wire clamping and mounting column 301; the transverse support wire and the vertical rod of the back net are wrapped together at the transverse part of the transverse support wire support groove 302, and the vertical rod of the back net is located in the vertical part of the transverse support wire support groove 302.

[0072] Specifically, the transverse support wire support groove 302 is formed on the upper surface of the transverse support wire clamping and mounting column 301, and adopts a cross-shaped groove structure, divided into a transverse part and a vertical part. The cross-sectional shape of the transverse part matches the diameter of the transverse support wire and is used to place the transverse support wire and the point where the transverse support wire intersects with the back net vertical pole; the cross-sectional shape of the vertical part matches the diameter of the back net vertical pole and is used to place the back net vertical pole. This cross-shaped groove enables precise positioning of the point where the transverse support wire intersects with the back net vertical pole, ensuring that their relative positions remain fixed.

[0073] The transverse support wire clamping mechanism 3 further includes a locking structure 303, which is used to lock the vertical rod of the back net in the transverse support wire support groove 302; the locking structure 303 is located on one side of the transverse support wire support groove 302.

[0074] Specifically, the locking structure 303 is used to lock the back net vertical rod in the vertical part of the support groove, and further indirectly fixes the position of the horizontal support wire by fixing the vertical rod, thereby improving the clamping stability.

[0075] Furthermore, the locking structure 303 includes a locking mounting plate 3031, which is fixedly mounted on the transverse support wire clamping mounting column 301.

[0076] Specifically, the locking mounting plate 3031 is fixedly mounted on the side of the transverse support steel wire clamping mounting column 301 by bolts. Its mounting plane is perpendicular to the axial direction of the back net vertical rod, providing a stable mounting reference for the locking cylinder 3032.

[0077] The locking structure 303 further includes a locking cylinder 3032, which is mounted on the locking mounting plate 3031; the telescopic end of the locking cylinder 3032 is perpendicular to the vertical rod of the back net.

[0078] Specifically, the locking cylinder 3032 serves as the power source for the locking action. It is installed on the locking mounting plate 3031 via a flange connection. The axial direction of its telescopic end is perpendicular to the vertical bar of the back net, ensuring that the locking force can be accurately applied to the side of the vertical bar.

[0079] The locking structure 303 further includes a locking push plate 3033, which is installed on the telescopic end of the locking cylinder 3032.

[0080] Specifically, the locking push plate 3033 is bolted to the telescopic end of the locking cylinder 3032 to transmit the thrust of the cylinder. An anti-slip rubber pad is affixed to the side that contacts the vertical bar of the back net to increase friction with the bar and prevent damage to the back net fabric.

[0081] The locking structure 303 further includes a locking guide plate 3034, which is mounted on the locking push plate 3033 and is parallel to the locking push plate 3033.

[0082] Specifically, the locking guide plate 3034 is parallel to the locking push plate 3033 and is bolted to the side of the locking push plate 3033 away from the vertical rod. It is used to install the locking push post 3035 and guide its movement.

[0083] The locking structure 303 further includes at least two parallel locking push pins 3035, one end of which is respectively installed on the locking guide plate 3034; wherein, the locking cylinder 3032 drives the locking push pins 3035 to extend into the positioning holes of the transverse support wire support groove 302, and locks the vertical rod of the back net in the transverse support wire support groove 302.

[0084] Specifically, the locking push pin 3035 uses at least two parallel metal cylinders, one end of which is installed on the locking guide plate 3034 by a threaded connection, and the other end is a smooth cylindrical surface. A positioning hole matching the locking push pin 3035 is provided on one side of the vertical portion of the transverse support wire support groove 302, and the position of the positioning hole is precisely aligned with the axis of the push pin.

[0085] In this embodiment, when the back net vertical rod is placed in the vertical part of the transverse support wire support groove 302, the locking cylinder 3032 is activated, the telescopic end extends, and drives the locking push plate 3033, the locking guide plate 3034 and the locking push column 3035 to move together in the direction of the vertical rod. Finally, the end of the locking push column 3035 extends into the positioning hole of the support groove, pressing the back net vertical rod tightly against the inner wall of the other side of the support groove, thereby locking and fixing the vertical rod, and indirectly fixing the position of the transverse support wire.

[0086] The device also includes: a lateral support wire extension section bending mechanism 4, which is used to form a hook-shaped, snap-fit, or fitted bending structure for the extension section of the lateral support wire; wherein, the back net positioning clamping mechanism 2, the lateral support wire clamping mechanism 3, and the lateral support wire extension section bending mechanism 4 are all mounted on the base 1; the lateral support wire clamping mechanism 3 is located in the middle of the back net positioning clamping mechanism 2; the lateral support wire extension section bending mechanism 4 is located on the outside of the corresponding lateral support wire clamping mechanism 3; the height of the back net positioning clamping mechanism 2 and the height of the lateral support wire clamping mechanism 3 decrease in a stepped manner, so that the car seat back net and the base 1 are in an inclined state.

[0087] Specifically, the transverse support wire extension section bending mechanism 4 is the actuator for bending and forming the transverse support wire extension section. It can complete multi-step bending actions according to processing requirements, ultimately forming a hook-shaped, snap-fit, or fitted bending structure. This mechanism adopts a modular design. A set of bending mechanisms is installed on the outer side of each transverse support wire clamping mechanism 3, mainly composed of a first bending structure 401 and a second bending structure 402. The first bending structure 401 is used to complete the first upward bend of the wire extension section, forming the first bending part. The second bending structure 402 is installed on the first bending structure 401 and is used to perform a second downward bend on the wire extension section after the first bend, forming the second bending part. The preset bending shape is achieved through the coordinated cooperation of the two bends.

[0088] Furthermore, the bending mechanism 4 for the extension section of the transverse support wire includes: a first bending structure 401, which is used to bend the first bending portion of the extension section of the transverse support wire upward.

[0089] Specifically, the first bending structure 401 achieves precise upward bending of the extended section of the transverse support steel wire through a motor-driven rotary bending method, and features adjustable bending angle and precise positioning.

[0090] Furthermore, the first bending structure 401 includes a first bending mounting post 4011, which is fixedly mounted on the base 1.

[0091] Specifically, the first bending mounting column 4011 serves as the mounting base for the first bending structure. It is fixedly mounted on the base 1 with bolts. Its height is precisely calibrated to ensure that the bending component installed at the top can be precisely matched with the height of the extension section of the transverse support steel wire.

[0092] The first bending structure 401 further includes a bending push cylinder 4012, which is fixedly installed on the first bending mounting column 4011.

[0093] Specifically, the bending push cylinder 4012 serves as the power source for the overall feeding of the bending mechanism. It is fixedly installed on the top of the first bending mounting column 4011 via a flange connection. Its extension and retraction direction is consistent with the axial direction of the transverse support steel wire, enabling the entire bending actuator to be fed or retracted towards the steel wire, achieving alignment before bending and reset after bending.

[0094] The first bending structure 401 further includes a bending push slide rail 4013, which is mounted on the bending push cylinder 4012.

[0095] Specifically, the bending push slide rail 4013 adopts a linear slide rail assembly, which is installed on the cylinder body of the bending push cylinder 4012. Its sliding direction is consistent with the extension and retraction direction of the cylinder, which is used to provide precise guidance for the movement of the bending push plate 4014 and ensure the smoothness and straightness of the feeding process.

[0096] The first bending structure 401 further includes a bending push plate 4014, one end of which is mounted on one end of the bending push slide rail 4013, and the other end is mounted on the bending push cylinder 4012.

[0097] Specifically, the bending push plate 4014 serves as the mounting carrier for the bending execution component. It can slide smoothly along the slide rail under the drive of the cylinder, thereby driving the subsequent bending components to achieve the feeding action.

[0098] The first bending structure 401 further includes a first bending mounting body 4015, which is mounted at the other end of the bending push slide rail 4013.

[0099] Specifically, the first bending mounting body 4015 is fixedly mounted on the other end of the bending push slide rail 4013 away from the cylinder by bolts, and the interior has reserved space for motor installation, for installing the first bending motor 40114 and related transmission components.

[0100] The first bending structure 401 further includes a first bending mounting shaft 4016, one end of which is fixedly mounted on the first bending mounting body 4015 and perpendicular to the first bending mounting body 4015.

[0101] Specifically, one end of the first bending mounting shaft 4016 is fixedly mounted on the side of the first bending mounting body 4015 via a key connection, and remains perpendicular to the side of the first bending mounting body 4015. Its axial direction is perpendicular to the axial direction of the transverse support wire, providing an installation reference for the fan-shaped bending rotating plate 4017 and the first guide mounting plate 4019.

[0102] The first bending structure 401 further includes: a fan-shaped bending rotating plate 4017, the center of which is mounted on the first bending mounting shaft 4016 via a bearing; the side surface of the fan-shaped bending rotating plate 4017 near the center is provided with a first driven tooth 4018.

[0103] Specifically, the center of the fan-shaped bending rotating plate 4017 is mounted on the first bending mounting shaft 4016 via a deep groove ball bearing, allowing it to rotate flexibly around the mounting shaft. A ring of first driven teeth 4018 is machined on the side surface of the fan-shaped bending rotating plate 4017 near the center, for meshing and transmission with the first drive gear 40115.

[0104] The first bending structure 401 further includes a first guide mounting plate 4019, the center of which is fixedly mounted on the first bending mounting shaft 4016.

[0105] Specifically, the first guide mounting plate 4019 is fixedly mounted on the first bending mounting shaft 4016 by a key connection, located outside the fan-shaped bending rotating plate 4017, and coaxial with the mounting shaft, for mounting the first guide block 40110 and the first limit block 40111.

[0106] The first bending structure 401 further includes a first guide block 40110, which is fixedly installed on the first guide mounting plate 4019.

[0107] Specifically, the first guide block 40110 is fixedly installed on the first guide mounting plate 4019 by bolts. The side of the guide block closest to the steel wire is machined into an arc surface. The radius of the arc surface matches the bending radius requirement and is used to guide the steel wire during the bending process to ensure the accuracy of the bending arc.

[0108] The first bending structure 401 further includes: a first limiting block 40111, which is fixedly installed on the first guide mounting plate 4019 and forms a first gap with the first guide block 40110; the extension section of the transverse support steel wire is located in the first gap.

[0109] Specifically, the first limiting block 40111 is fixedly mounted on the first guide mounting plate 4019 by bolts, located on one side of the first guide block 40110, forming a first gap between the two that matches the diameter of the transverse support wire. This gap is used to accommodate the extension section of the transverse support wire, circumferentially limiting it and preventing the wire from shifting during bending.

[0110] The first bending structure 401 further includes: a first bending block 40112, which is mounted on the fan-shaped bending rotating plate 4017; the first bending block 40112 is provided with a first bending groove 40113.

[0111] Specifically, the first bending block 40112 is fixedly installed on the fan-shaped edge of the fan-shaped bending rotating plate 4017 by bolts, and a first bending groove 40113 is formed on the side of the first guide block 40110. The cross-sectional shape of the first bending groove is semi-circular, and the diameter matches the diameter of the transverse support wire. It is used to apply bending force to the wire during rotation and push the wire to bend along the arc surface of the first guide block 40110.

[0112] The first bending structure 401 further includes a first bending motor 40114, which is mounted on the first bending mounting body 4015.

[0113] Specifically, the first bending motor 40114 is fixedly installed inside the first bending mounting body 4015 by bolts, and its rotating end extends out of the outside of the mounting body to drive the first drive gear 40115 to rotate.

[0114] The first bending structure 401 further includes: a first driving gear 40115, which is mounted on the rotating end of the first bending motor 40114; the first driving gear 40115 meshes with the first driven gear 4018.

[0115] Specifically, the first drive gear 40115 is mounted on the rotating end of the first bending motor 40114 via a key connection, and precisely meshes with the first driven gear 4018 on the fan-shaped bending rotating plate 4017 to form a gear transmission mechanism, which transmits the rotational motion of the motor to the fan-shaped bending rotating plate 4017.

[0116] The first bending structure 401 further includes: a first limiting post 40116, which is fixedly installed on the base 1; a first limiting groove 40117 is provided on the first limiting post 40116; the width of the first limiting groove 40117 is the same as the thickness of the fan-shaped bending rotating plate 4017; wherein, the first bending motor 40114 drives the first bending block 40112 on the fan-shaped bending rotating plate 4017 to rotate upward, so that the extension section of the transverse support steel wire located in the first gap bends upward along the arc edge of the first guide block 40110 to form the first bending part; when the edge of the fan-shaped bending rotating plate 4017 moves into the first limiting groove 40117, the upward bending of the extension section of the transverse support steel wire stops, and this state is maintained.

[0117] Specifically, the first limiting post 40116 is fixedly installed on the base 1 by bolts, located within the rotation trajectory range of the fan-shaped bending rotating plate 4017. A first limiting groove 40117 is provided on its top, the width of which is the same as the thickness of the fan-shaped bending rotating plate 4017. This groove is used to limit the maximum rotation angle of the fan-shaped bending rotating plate 4017, ensuring that the bending angle of the first bending section accurately meets the design requirements.

[0118] In this embodiment, before bending, the bending push cylinder 4012 is activated, driving the bending push plate 4014, the first bending mounting body, and the subsequent bending components to feed towards the extension section of the transverse support steel wire, so that the extension section of the steel wire enters the first gap between the first guide block 40110 and the first limiting block 40111, and the first bending groove of the first bending block 40112 is in contact with the steel wire; then the first bending motor 40114 is activated, driving the first drive gear 40115 and the first driven gear 40112 to engage with the steel wire. The meshing transmission of 018 drives the fan-shaped bending rotating plate 4017 to rotate upward around the first bending mounting shaft 4016. The first bending block 40112 pushes the steel wire extension section to bend upward along the arc surface of the first guide block 40110, forming the first bending part. When the edge of the fan-shaped bending rotating plate 4017 rotates into the first limiting groove 40117 of the first limiting post 40116, the motor stops rotating and maintains this posture for a period of time to ensure that the bending shape is stable and complete the first upward bending.

[0119] The bending mechanism 4 for the extension section of the transverse support wire further includes: a second bending structure 402, which is used to bend the second bending section of the extension section of the transverse support wire downward after the first bending section of the extension section of the transverse support wire has completed the upward bending; wherein, the first bending structure 401 is disposed on the base 1; and the second bending structure 402 is mounted on the first bending structure 401.

[0120] Specifically, the second bending structure 402 is similar in structure to the first bending structure 401, employing a motor-driven rotary bending method. It is used to perform a second downward bend on the extended section of the steel wire after the first bend, forming the second bending section. This structure is mounted on the bending push slide rail 4013 of the first bending structure 401 and can perform feeding actions together with the first bending structure.

[0121] Furthermore, the second bending structure 402 includes a second bending mounting block 4021, which is mounted on the bending push slide rail 4013.

[0122] Specifically, the second bending mounting block 4021 is fixedly mounted on the slider of the bending push slide rail 4013 by bolts, and is relatively fixed to the first bending mounting body 4015, for mounting the second bending mounting body 4022.

[0123] The second bending structure 402 further includes a second bending mounting body 4022, which is mounted on the second bending mounting block 4021.

[0124] Specifically, the second bending mounting body 4022 adopts a box-type structure similar to the first bending mounting body 4015, and is fixedly mounted on the second bending mounting block 4021 by bolts. The interior has reserved space for motor installation, which is used to install the second bending motor 4029 and related transmission components.

[0125] The second bending structure 402 further includes: a second bending mounting shaft 4023, one end of which is fixedly mounted on the second bending mounting body 4022; the second bending mounting shaft 4023 is inclinedly arranged on the second bending mounting block 4021.

[0126] Specifically, one end of the second bending mounting shaft 4023 is fixedly mounted on the side of the second bending mounting body 4022 via a key connection. Because it matches the angle requirement of the second bend, it is inclined to provide an installation reference for the second bending rotating plate 4024 and the second guide block 4026. The second bending structure 402 also includes: a second bending rotating plate 4024, the center of which is mounted on the second bending mounting shaft 4023 via a bearing; a second driven tooth 4025 is provided on the side surface of the second bending rotating plate 4024.

[0127] The second bending structure 402 further includes: a second guide block 4026, the center of which is fixedly mounted on the second bending mounting shaft 4023; the second guide block 4026 is located outside the second bending rotating plate 4024.

[0128] Specifically, the second guide block 4026 is fixedly mounted on the second bending mounting shaft 4023 via a key connection, located outside the second bending rotating plate 4024, and coaxial with the mounting shaft. Its side closest to the steel wire is machined into an arc surface matching the radius of the second bend, used to guide the steel wire during the bending process.

[0129] The second bending structure 402 further includes: a second bending block 4027, which is mounted on the second bending rotating plate 4024; the second bending block 4027 is provided with a second bending groove 4028; a second gap is formed between the second bending groove 4028 and the second guide block 4026, and the extension section of the transverse support steel wire is located in the second gap.

[0130] Specifically, the second bending block 4027 is bolted to the edge of the second bending rotating plate 4024, and a second bending groove 4028 is formed on the side near the second guide block 4026. The cross-sectional shape of the second bending groove is semi-circular, and its diameter matches the diameter of the transverse support wire, which is used to apply bending force to the wire during rotation. A second gap matching the diameter of the wire is formed between the second bending groove 4028 and the second guide block 4026, which is used to accommodate the extended section of the wire after the first bend.

[0131] The second bending structure 402 also includes a second bending motor 4029, which is mounted on the second bending mounting body 4022.

[0132] Specifically, the second bending motor 4029 is fixedly installed inside the second bending mounting body 4022 by bolts, and its rotating end extends out of the outside of the mounting body to drive the second drive gear 40210 to rotate.

[0133] The second bending structure 402 further includes: a second driving gear 40210, which is mounted on the rotating end of the second bending motor 4029; the second driving gear 40210 meshes with the second driven gear 4025; wherein, the second bending motor 4029 drives the second bending block 4027 on the second bending rotating plate 4024 to move downward, so that the extension section of the transverse support steel wire located in the second gap bends downward along the arc edge of the second guide block 4026 to form the second bending part.

[0134] Specifically, the second drive gear 40210 is mounted on the rotating end of the second bending motor 4029 via a key connection, and precisely meshes with the second driven gear 4025 on the second bending rotating plate 4024 to form a gear transmission mechanism, which transmits the rotational motion of the motor to the second bending rotating plate 4024.

[0135] In this embodiment, after the first bend is completed, the second bending motor 4029 starts, and through the meshing transmission of the second drive gear 40210 and the second driven gear 4025, it drives the second bending rotating plate 4024 to rotate downward around the second bending mounting shaft 4023; the second bending block 4027 rotates together with the rotating plate, and applies a downward bending force to the steel wire extension section located in the second gap through the second bending groove, pushing the steel wire to bend downward along the arc surface of the second guide block 4026 to form the second bend; when the bending angle reaches the preset value, the second bending motor 4029 stops rotating, completing the second bend. After the two bends are completed, each motor reverses and resets, and the bending push cylinder 4012 retracts and resets, waiting for the next processing cycle.

[0136] Example 2 The bending method is applicable to the bending forming device described in Embodiment 1 above. The method includes: S1, confirming that the base 1 is stably fixed, and that the back net positioning clamping mechanism 2, the transverse support wire clamping mechanism 3, and the transverse support wire extension bending mechanism 4 are all in the initial reset state; checking that the extension and retraction states of the transverse pressing cylinder 2014, the vertical pressing cylinder 2022, the locking cylinder 3032, and the bending pushing cylinder 4012 are normal, and that the first bending motor 40114 and the second bending motor 4029 operate without abnormalities; confirming that there are no foreign objects in the first limit groove 40117, each support groove, and the bending groove to ensure smooth subsequent operations.

[0137] Meanwhile, position sensors are installed at both ends of each cylinder body. The position sensors are used to detect whether the cylinder extension and retraction ends are fully retracted or extended to the correct position, so as to avoid cylinder jamming and abnormal mechanism posture. Incremental encoders are installed at the output shaft ends of the first and second bending motors. The incremental encoders are used to provide real-time feedback on motor speed and rotation angle, and to verify whether the motor operating status meets the preset parameters, so as to prevent speed fluctuations or angle deviations. Contact photoelectric sensors are embedded in the inner walls of the first limit groove, each support groove and bending groove. The contact photoelectric sensors are used to detect whether there are residual iron filings, dust and other debris in the groove. If there are debris, an alarm is triggered to prevent debris from affecting the fit accuracy of the parts or scratching the steel wire and back mesh.

[0138] Specifically, a comprehensive inspection of the equipment status must be completed before operation to ensure that all components are in normal working condition, thus guaranteeing the smoothness and safety of subsequent operations. First, confirm that the base 1 is stably fixed by the bottom anchor bolts, the top surface is level as required, and there is no looseness or shaking; at the same time, confirm through the feedback signals of the magnetic switches of each cylinder and the encoder of the motor that the back net positioning clamping mechanism 2, the transverse support steel wire clamping mechanism 3, and the transverse support steel wire extension bending mechanism 4 are all in the initial reset state, such as each clamping block is in the loose position, the cylinder extension end is fully retracted, and the bending and rotating plate has returned to the initial angle. Secondly, the core components of the pneumatic system were inspected. Magnetic switches were used to check the smooth and flexible extension and retraction of the horizontal clamping cylinder 2014, vertical clamping cylinder 2022, locking cylinder 3032, and bending push cylinder 4012, ensuring no jamming or air leakage, and that the cylinder pressure values ​​met the preset standards. Encoders and motor controllers were used to check that the first bending motor 40114 and the second bending motor 4029 operated without abnormal noise or vibration, and that the motor speed and angle control were precise. Finally, a cleaning inspection was performed using in-slot contact photoelectric sensors to confirm the absence of debris. If debris was found, it was cleaned with a high-pressure air gun or brush to prevent it from affecting the component fit accuracy or scratching the steel wire and back mesh.

[0139] S2. Place the car seat back net to be processed onto the back net positioning and clamping mechanism 2: embed the crossbar of the back net into the transverse support groove 2012 of the transverse support mounting column 2011, so that the crossbar fits against the inner wall of the transverse support groove 2012; place the two vertical bars of the back net on the inclined surfaces of the vertical downward clamping blocks 2021 of the two symmetrically arranged vertical support clamping structures 202, ensuring that the vertical bars are placed flat; at the same time, adjust the position of the back net so that the wrapping part of the transverse support wire and the back net vertical bar is aligned with the transverse support wire support groove 302 of the transverse support wire clamping mechanism 3.

[0140] Specifically, the car seat back net to be processed is placed on the back net positioning and clamping mechanism 2 according to the preset posture to complete the initial positioning and alignment. The operation requires precise placement in three steps: First, slowly insert the horizontal bar of the back net into the horizontal support groove 2012 of the horizontal support mounting column 2011, ensuring that the horizontal bar is completely flush with the arc-shaped inner wall of the horizontal support groove 2012 and that the two ends of the horizontal bar extend symmetrically to avoid misalignment. Second, place the two vertical bars of the back net on the inclined surfaces of the vertical downward pressing blocks 2021 of the two symmetrically arranged vertical support pressing structures 202, and gently adjust the position of the vertical bars to ensure that they are placed flat along the inclined surfaces without twisting or warping. Third, simultaneously adjust the overall position of the back net so that the connection point between the horizontal support wire and the vertical bar of the back net is precisely aligned with the horizontal support wire support groove 302 of the horizontal support wire clamping mechanism 3, ensuring that the wire at the connection point can fall smoothly into the horizontal part of the support groove and the vertical bar of the back net falls into the vertical part of the support groove, laying the foundation for subsequent precise clamping. Handle with care during placement to avoid damage caused by severe friction between the back net fabric and metal parts.

[0141] S3. Start the transverse pressing cylinder 2014. The telescopic end of the transverse pressing cylinder 2014 drives the transverse upper pressing block 2015 to move. Under the guidance of the transverse flipping connecting block 2017, the transverse upper pressing block 2015 flips smoothly and presses the crossbar of the back net, so that the crossbar is in close contact with the surface of the transverse support mounting column 2011, thus completing the positioning and fixing of the crossbar.

[0142] Meanwhile, a miniature pressure sensor is embedded in the arc-shaped groove on the bottom surface of the horizontal clamping block 2015. The miniature pressure sensor is used to detect the pressure value of the clamping block on the crossbar, ensuring that the pressure meets the preset standard, which ensures rigid fixation and avoids damage to the crossbar or back mesh due to excessive pressure. If the pressure is abnormal, the cylinder is controlled to stop. A displacement sensor is installed on the side of the horizontal support mounting column 2011. The displacement sensor is used to monitor the displacement of the crossbar after clamping, confirming that the crossbar is not loose or offset, and ensuring positioning stability.

[0143] Specifically, the control system activates the transverse clamping cylinder 2014. Under a preset pressure, the cylinder's telescopic end slowly extends, causing the transverse upper clamping block 2015 to begin moving. Guided by the parallelogram linkage mechanism composed of the transverse flipping connecting block 2017, the transverse upper clamping block 2015 smoothly flips along the hinge axis while simultaneously pressing slowly downwards towards the back net crossbar. A miniature pressure sensor monitors the pressure in real time, and a displacement sensor monitors the crossbar's position, ensuring that the arc-shaped groove on the bottom surface of the clamping block precisely fits the crossbar's surface. Ultimately, the crossbar is tightly pressed between the surface of the transverse support mounting column 2011 and the inner wall of the transverse support groove 2012, achieving rigid positioning and fixation of the crossbar. After clamping is complete, the sensor sends a positioning signal, and the system proceeds to the next step.

[0144] S4. Simultaneously start the vertical clamping cylinders 2022 of the two vertical support clamping structures 202. The telescopic end of the vertical clamping cylinder 2022 drives the vertical upward clamping block 2023 to flip and press down with the cooperation of the vertical flipping connecting block 2025, pressing the vertical rod of the back net onto the inclined surface of the vertical downward clamping block 2021, thus completing the overall positioning and clamping of the back net. At this time, the back net is in an inclined state and fits the device due to the stepped height difference between the back net positioning and clamping mechanism 2 and the transverse support steel wire clamping mechanism 3.

[0145] Meanwhile, a pressure sensor is installed on the pressing surface of each of the two vertical pressing blocks 2023. The pressure sensor is used to synchronously monitor the pressing pressure of the two vertical rods to ensure that the pressure on both sides is balanced and to avoid the back net shift caused by unilateral force. An inclination sensor is installed on the edge area of ​​the positioning reference surface of the back net bonding device. The inclination sensor is used to detect whether the tilt angle of the back net is consistent with the actual assembly posture, to ensure that the tilt angle is accurate and to provide a guarantee for the alignment of the bending station of the steel wire extension section.

[0146] Specifically, the control system synchronously activates the vertical clamping cylinders 2022 of the two vertical support clamping structures 202, and the pressure sensor feedback signal ensures that the clamping actions on both sides are synchronized and the pressure is balanced. The telescopic end of the vertical clamping cylinder 2022 drives the vertical upward clamping block 2023, which, with the cooperation of the vertical flipping connecting block 2025, smoothly flips along the hinge axis and presses down obliquely, finally pressing the vertical rod of the back net tightly against the inclined surface of the vertical downward clamping block 2021. The tilt angle of the back net is checked by the tilt sensor, confirming that the back net, under the combined action of the horizontal support clamping structure 201, the vertical support clamping structure 202, and the horizontal support wire clamping mechanism 3, presents an tilt posture consistent with the actual assembly state, completely conforming to the positioning reference surface of the device, and achieving stable positioning and clamping of the entire back net.

[0147] S5. Activate the locking cylinder 3032 of the transverse support wire clamping mechanism 3. The telescopic end of the locking cylinder 3032 pushes the locking push plate 3033 and the locking guide plate 3034 to move, causing at least two parallel locking push pins 3035 to extend into the positioning holes of the transverse support wire support groove 302. At this time, the entanglement between the transverse support wire and the back net vertical rod, and the transverse support wire are both limited to the transverse part of the transverse support wire support groove 302, while the back net vertical rod is limited to the vertical part. The locking push pins 3035 lock and fix the vertical rod, preventing the transverse support wire from shifting during subsequent bending.

[0148] Meanwhile, a contact-type limit switch is installed at the end of the locking push post 3035. The contact-type limit switch is used to detect whether the locking push post is fully inserted into the positioning hole and presses against the vertical rod, confirming that the locking is in place and avoiding loosening due to the push post not being in place. A tension sensor is installed on the inner wall of the transverse part of the transverse support wire support groove 302. The tension sensor is used to monitor the tension value of the transverse support wire, ensuring that the wire is in a stable tension state after locking, without the risk of axial movement or radial swing.

[0149] Specifically, the locking cylinder 3032 of the transverse support wire clamping mechanism 3 is activated. The telescopic end of the locking cylinder 3032 extends under the preset pressure, pushing the locking push plate 3033, the locking guide plate 3034, and the locking push column 3035 together to move towards the vertical rod. When the limit switch at the end of the locking push column is triggered, it is confirmed that the push column is accurately inserted into the positioning hole and presses against the vertical rod; at the same time, the tension sensor feeds back a signal to confirm that the entanglement of the transverse support wire and the back net vertical rod, and the main body of the wire are firmly fixed in the support groove, and the wire tension is stable. The rigid fixation of the transverse support wire is indirectly achieved by fixing the vertical rod, fundamentally avoiding wire displacement during subsequent bending.

[0150] S6. Confirm that the extension section of the transverse support steel wire passes through the first gap formed by the first guide block 40110 and the first limiting block 40111, and corresponds to the first bending groove 40113 of the first bending block 40112.

[0151] Meanwhile, a laser photoelectric sensor is installed at both the entrance and exit of the first gap. The laser photoelectric sensor is used to detect whether the extension section of the steel wire passes through the first gap smoothly without deviation or skew, ensuring that the direction of the steel wire is consistent with the bending trajectory. A capacitive proximity sensor is installed on the inner wall of the first bending groove 40113. The capacitive proximity sensor is used to detect whether the steel wire is completely in contact with the semi-circular inner wall of the bending groove, ensuring that the bending force can be evenly applied to the steel wire and preventing the steel wire from detaching from the groove during the bending process.

[0152] Specifically, the position of the extended section of the transverse support wire is confirmed by a combination of laser photoelectric sensors and capacitive proximity sensors: ensuring that the wire passes smoothly through the first gap, with its surface tightly fitted to the inner wall of the gap without any offset; simultaneously confirming that the wire corresponds to and fits the first bending groove 40113, with the inner wall of the bending groove completely fitted to the wire. If the sensor detects an alignment deviation, an alarm is immediately triggered, the system controls all mechanisms to reset, and the back net position is readjusted until accurate alignment is achieved.

[0153] S7. Start the first bending motor 40114. The first bending motor 40114 drives the first drive gear 40115 to rotate. Through the meshing transmission between the first drive gear 40115 and the first driven gear 4018 on the fan-shaped bending rotating plate 4017, the fan-shaped bending rotating plate 4017 is driven to rotate upward around the first bending mounting shaft 4016.

[0154] Meanwhile, a vision sensor is installed next to the meshing area of ​​the first drive gear 40115 and the first driven gear 4018. The vision sensor is used to monitor the meshing state of the gears in real time, detect abnormalities such as tooth jamming and tooth skipping in a timely manner, and avoid bending deviation caused by transmission failure. An angle sensor is installed on the side of the fan-shaped bending rotating plate 4017. The angle sensor is used to accurately feed back the rotation angle of the fan-shaped bending rotating plate, ensuring that the rotation speed and angle meet the preset parameters, and forming a double verification with the motor encoder.

[0155] Specifically, the control system starts the first bending motor 40114, which runs smoothly at a preset speed, driving the first drive gear 40115 to rotate synchronously. A vision sensor monitors the gear meshing status in real time to ensure that there is no jamming or skipping of gears; the angle sensor works in conjunction with the motor encoder to provide feedback on the angle and speed at which the fan-shaped bending rotating plate 4017 rotates smoothly upward around the first bending mounting shaft 4016, ensuring that the rotation process is uniform and stable.

[0156] S8. The fan-shaped bending rotating plate 4017 drives the first bending block 40112 to rotate upward synchronously. Under the constraint of the first bending groove 40113, the extended section of the transverse support steel wire bends upward along the arc edge of the first guide block 40110. When the edge of the fan-shaped bending rotating plate 4017 enters the first limiting groove 40117 of the first limiting post 40116, the first bending motor 40114 stops running, maintains the current state, and completes the forming of the first bending part.

[0157] Meanwhile, a Hall sensor is installed on the inner wall of the first limiting groove 40117. The Hall sensor is used to detect whether the fan-shaped bending rotating plate has fully entered the limiting groove and reached the preset position, and accurately triggers the motor to stop, ensuring that the angle of the first bending part meets the design requirements. A laser contour sensor is installed next to the forming area of ​​the first bending part. The laser contour sensor is used to scan the contour shape of the first bending part and verify whether the bending arc is regular and free from defects such as deformation and cracks.

[0158] Specifically, as the fan-shaped bending rotating plate 4017 rotates upward, it drives the first bending block 40112 to move upward synchronously. Under the constraint and guidance of the first bending groove, the extended section of the steel wire slowly bends upward along the arc edge of the first guide block. When the Hall sensor detects that the edge of the rotating plate has entered the limiting groove and is in place, it controls the first bending motor 40114 to stop running and maintains the posture for a short period of pressure holding; at the same time, the laser contour sensor scans the contour of the bent part to confirm that the bending arc is precisely controlled by the radius of the arc surface of the guide block, the shape is stable, and the angle deviation caused by elastic rebound is avoided, thus completing the forming of the first bent part.

[0159] S9. After confirming the formation of the first bend, the subsequent part of the transverse support wire extension enters the second gap formed by the second bending groove 4028 of the second guide block 4026 and the second bending block 4027.

[0160] Meanwhile, an infrared photoelectric sensor is installed at the entrance of the second gap. The infrared photoelectric sensor is used to detect whether the subsequent part of the steel wire extension section enters the second gap smoothly, ensuring accurate alignment with the second bending groove. A displacement sensor is installed on the side of the second bending block 4027. The displacement sensor is used to monitor the position of the second bending block, ensuring that its distance from the steel wire meets the preset bending requirements, and avoiding alignment deviation from affecting the forming quality of the second bending part.

[0161] Specifically, after the first bend is formed, an infrared photoelectric sensor confirms that the subsequent part of the extended steel wire has naturally entered the second gap formed by the second guide block 4026 and the second bending groove 4028. A displacement sensor verifies the position of the second bending block to ensure that the steel wire is completely in contact with the inner wall of the second gap and the inner wall of the bending groove, without any offset or loosening. If there is a misalignment, precise alignment is achieved by adjusting the position of the second bend structure or fine-tuning the posture of the steel wire.

[0162] S10. Start the second bending motor 4029. The second bending motor 4029 drives the second drive gear 40210 to rotate. Through the meshing transmission between the second drive gear 40210 and the second driven gear 4025 on the second bending rotating plate 4024, the second bending rotating plate 4024 is driven to rotate downward around the second bending mounting shaft 4023.

[0163] Meanwhile, a vibration sensor is installed in the meshing area of ​​the second drive gear 40210 and the second driven gear 4025. The vibration sensor is used to monitor the vibration value during the gear transmission process, detect abnormal vibration in time, and avoid bending deviation caused by transmission instability. A torque sensor is installed at the end of the second bending mounting shaft 4023. The torque sensor is used to detect the output torque of the motor to ensure that the torque matches the bending requirements of the steel wire, and avoid the steel wire breaking due to excessive torque or insufficient bending due to insufficient torque.

[0164] Specifically, the second bending motor 4029 is started, and the motor runs smoothly at the preset speed, driving the second drive gear 40210 to rotate synchronously. The vibration sensor monitors the transmission vibration in real time, and the torque sensor provides feedback on the output torque to ensure smooth gear transmission, that the rotation speed is coordinated with the first bending stage, and that the torque meets the requirements, thus avoiding stress concentration at the wire bending point due to sudden speed changes or abnormal torque.

[0165] S11. The second bending rotating plate 4024 drives the second bending block 4027 to move downward synchronously. Under the constraint of the second bending groove 4028, the extended section of the transverse support steel wire bends downward along the arc edge of the second guide block 4026 to form the second bending part. According to the design requirements, by controlling the running angle of the second bending motor 4029, the two bending structures are made to form a hook-shaped, snap-fit, or fit-fitting target bending structure, and then the second bending motor 4029 is stopped. Meanwhile, an angle sensor is installed on the side of the second bending rotating plate 4024. The angle sensor is used to precisely control the rotation angle of the second bending rotating plate to ensure that the angle of the second bending part is accurate and works with the first bending part to form a preset bending structure. A 3D vision sensor is installed on the outside of the target bending structure. The 3D vision sensor is used to scan the three-dimensional shape of the overall bending structure to verify whether it meets the design requirements such as hook shape and snap-fit ​​shape, and at the same time detect whether there are defects such as micro-cracks and deformation at the bending point.

[0166] Specifically, when the second bending rotating plate 4024 rotates downwards, it drives the second bending block 4027 to move downwards synchronously. Under the constraint of the second bending groove, the extended section of the steel wire slowly bends downwards along the arc edge of the second guide block. A high-precision angle sensor provides feedback on the rotation angle, and the control system precisely controls the operating angle of the second bending motor 4029, so that the first and second bending parts work together to form the target bending structure that meets the design requirements. After the motor stops, the overall structure is scanned by a 3D vision sensor to confirm that the shape is qualified and without defects, thus completing the forming of the second bending part.

[0167] S12. Sequentially control the second bending motor 4029 and the first bending motor 40114 to reverse, driving the second bending rotating plate 4024 and the fan-shaped bending rotating plate 4017 back to their initial positions; start the bending push cylinder 4012, driving the bending push slide rail 4013 and each bending component to reset.

[0168] Meanwhile, using the motor encoder and cylinder magnetic switch from S1, a position sensor is installed at the end of the bending push slide rail 4013. The position sensor is used to detect whether the slide rail and bending components have been fully reset to the initial feed position, ensuring that the reset is in place and reserving sufficient space for the next processing; the motor encoder and cylinder magnetic switch work together to verify that each mechanism has returned to its initial posture and there is no component jamming.

[0169] Specifically, after bending is completed, the control system sequentially controls the second and first bending motors to reverse, and the motor encoder confirms that the second bending rotating plate 4024 and the fan-shaped bending rotating plate 4017 have returned to their initial positions; the bending push cylinder 4012 is started, and the slide rail end position sensor and cylinder magnetic switch feedback signal confirm that the slide rail and each bending component have moved backward in the direction away from the steel wire and have been completely reset to the initial feed position.

[0170] S13, sequentially control the locking cylinder 3032, vertical pressing cylinder 2022, and horizontal pressing cylinder 2014 to reset, the locking push column 3035 to exit the positioning hole, and the vertical pressing block 2023 and the horizontal pressing block 2015 to release the pressing on the back net.

[0171] Meanwhile, the magnetic switches for each cylinder and the travel switches for the locking push pins are reused, and pressure release sensors are installed in the contact areas between each clamping block and the back mesh. The pressure release sensors are used to detect whether the pressure of the clamping block on the back mesh has been completely released, ensuring that there is no residual pressure on the back mesh after unlocking, and avoiding deformation or damage to the back mesh when removing the part; the magnetic switches and travel switches confirm that each cylinder and push pin has been fully reset and unlocked.

[0172] Specifically, the cylinders are reset sequentially, following the order of locking mechanism first, then vertical clamping, and finally horizontal clamping. The push pin is confirmed to have exited the positioning hole by the locking push pin travel switch; the vertical clamping block 2023 and the horizontal clamping block 2015 are confirmed to be completely released from the back net with no residual pressure by the pressure release sensor; and the cylinder magnetic switch is confirmed to have completely retracted the telescopic ends of each cylinder, indicating that all constraints have been released and the part can be removed.

[0173] S14. Remove the bent car seat back net from the device to complete a single bending operation; if continuous processing is required, repeat S2-S13.

[0174] Meanwhile, a diffuse reflection photoelectric sensor is installed in the part-removal area of ​​the device. The diffuse reflection photoelectric sensor is used to detect whether the back net has been successfully removed. If the removal is successful, the system is triggered to prepare for the next processing cycle; if the removal is unsuccessful, an alarm is issued to avoid repeated feeding that could cause damage to the parts due to collision.

[0175] Specifically, the operator uses a special tool to remove the back mesh. Once the diffuse reflection photoelectric sensor detects that the removal is complete, the system automatically resets to standby mode. After removal, the forming quality of the bent structure is checked to confirm there are no cracks, deformations, angle deviations, or other issues, thus completing a single bending operation. If continuous processing is required, the S2-S13 process is repeated. Once the operation is complete, the system shuts off the power and air supply and prompts for equipment cleaning and maintenance.

[0176] In this embodiment, by positioning the horizontal and vertical bars of the back net in stages and precisely aligning the point where the steel wire is wrapped with the vertical bar with the support groove, combined with the cylinder-driven clamping structure and the rigid fixation of the locking push column, axial movement and radial swaying of the back net and steel wire during the bending process are avoided from the source, ensuring the uniformity of the bending reference. A motor-driven gear transmission is used to drive the bending rotating plate, and with the mechanical limiting effect of the limiting groove, the bending angle of the first and second bending parts can be precisely controlled. By adjusting the motor operating parameters, various target bending structures such as hooks and snaps can be flexibly formed to meet the design requirements of different seat back nets, effectively avoiding the angle deviation problem of manual bending. During the bending process, the steel wire always adheres to the arc-shaped inner wall of the bending groove and bends smoothly along the arc edge of the guide block, avoiding defects such as steel wire cracks and deformation caused by stress concentration, ensuring the mechanical performance and appearance consistency of the bent structure.

[0177] The foregoing detailed one embodiment of the present invention, but this is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A bending and forming device, characterized in that, This device is used to bend the extended sections of the transverse support wires on the car seat back mesh to form hook-shaped, snap-fit, or fitted bending structures, which are then embedded into the pre-drilled slots or positioning holes of the plastic frame or metal bracket of the seat back. This bending structure restricts the axial and radial displacement of the transverse support wires during vehicle movement, seat back adjustment, or passenger leaning, preventing the mesh from collapsing, wrinkling, or making abnormal noises due to loose wires. The device includes: The base (1) is used to support all the components of the device; Back net positioning clamping mechanism (2), which is used to clamp the car seat back net onto the back net positioning clamping mechanism (2); At least two transverse support wire clamping mechanisms (3) are used to position and clamp the corresponding transverse support wires and the back mesh at the point where they are wrapped. The transverse support wire extension section bending mechanism (4) is used to form a hook-shaped, snap-shaped or fitting bending structure for the extension section of the transverse support wire. Among them, the back net positioning clamping mechanism (2), the transverse support wire clamping mechanism (3) and the transverse support wire extension bending mechanism (4) are all installed on the base (1); the transverse support wire clamping mechanism (3) is located in the middle of the back net positioning clamping mechanism (2); the transverse support wire extension bending mechanism (4) is located on the outside of the corresponding transverse support wire clamping mechanism (3); the height of the back net positioning clamping mechanism (2) and the height of the transverse support wire clamping mechanism (3) decrease in a step-like manner, so that the car seat back net and the base (1) are tilted.

2. The bending and forming apparatus according to claim 1, characterized in that, The back net positioning and clamping mechanism (2) includes: A transverse support and clamping structure (201) is used to support the crossbar of the corresponding car seat back net and clamp the crossbar of the car seat back net. At least two vertical support clamping structures (202) are used to support the vertical bars of the corresponding car seat back net respectively; The two vertical support and clamping structures (202) are arranged symmetrically to each other; the height of the horizontal support and clamping structure (201) is higher than the height of the horizontal support wire clamping mechanism (3), and the height of the horizontal support wire clamping mechanism (3) is higher than the height of the vertical support and clamping structure (202).

3. The bending and forming apparatus according to claim 2, characterized in that, The lateral support and clamping structure (201) includes: At least two transverse support mounting posts (2011) are vertically mounted on the base (1); each of the transverse support mounting posts (2011) is provided with a transverse support groove (2012); the crossbar of the car seat back net is located in the corresponding transverse support groove (2012); A transverse clamping mounting post (2013) is vertically mounted on the base (1); the transverse clamping mounting post (2013) is located between two transverse support mounting posts (2011); A transverse clamping cylinder (2014) is mounted on a transverse clamping mounting post (2013); A transverse pressing block (2015) has one end hinged to the telescopic end of a transverse pressing cylinder (2014); A lateral tilting mounting block (2016) is mounted on a lateral clamping cylinder (2014); At least two parallel transverse flip connecting blocks (2017) are used to connect the transverse flip mounting block (2016) and the transverse upper clamping block (2015); one end of the two parallel transverse flip connecting blocks (2017) is coaxially hinged to the transverse flip mounting block (2016), and the other end is coaxially hinged to the transverse upper clamping block (2015); Among them, the transverse pressing cylinder (2014) drives the transverse upper pressing block (2015) to press the cross bar of the car seat back net, so that the cross bar of the car seat back net is in close contact with the surface of the transverse support mounting column (2011).

4. The bending and forming apparatus according to claim 3, characterized in that, The vertical support and clamping structure (202) includes: A vertically downward pressing block (2021) is vertically mounted on a base (1); the upper surface of the vertically downward pressing block (2021) is an inclined surface; the vertical rod of the car seat back net is located on the vertically downward pressing block (2021); A vertical clamping cylinder (2022) is installed in an inclined groove in the base (1); the bottom surface of the inclined groove is parallel to the upper surface of the vertically downward clamping block (2021); A vertical clamping block (2023) has one end hinged to the telescopic end of a vertical clamping cylinder (2022); A vertically flipping mounting block (2024) is mounted on a vertically clamping cylinder (2022); At least two parallel vertical flip connecting blocks (2025) are used to connect the vertical flip mounting block (2024) and the vertical pressing block (2023); one end of the two parallel vertical flip connecting blocks (2025) is coaxially hinged to the vertical flip mounting block (2024), and the other end is coaxially hinged to the vertical pressing block (2023); Among them, the vertical pressing cylinder (2022) drives the vertical pressing block (2023) to press the vertical bar of the car seat back net, so that the vertical bar of the car seat back net is in close contact with the upper surface of the vertical pressing block (2021).

5. The bending and forming apparatus according to claim 4, characterized in that, The transverse support wire clamping mechanism (3) includes: A transverse support wire clamping mounting column (301) is fixedly mounted on a base (1); the upper surface of the transverse support wire clamping mounting column (301) is an inclined surface; The transverse support wire support groove (302) is located on the upper surface of the transverse support wire clamping and mounting column (301); the transverse support wire and the vertical rod of the back net are wrapped together, and the transverse support wire is located in the transverse part of the transverse support wire support groove (302), and the vertical rod of the back net is located in the vertical part of the transverse support wire support groove (302). A locking structure (303) is used to lock the vertical rod of the back net into the transverse support wire support groove (302); the locking structure (303) is located on one side of the transverse support wire support groove (302).

6. The bending and forming apparatus according to claim 5, characterized in that, The locking structure (303) includes: Locking mounting plate (3031) is fixedly mounted on transverse support steel wire clamping mounting column (301); A locking cylinder (3032) is mounted on a locking mounting plate (3031); the telescopic end of the locking cylinder (3032) is perpendicular to the vertical rod of the back net; Locking push plate (3033), which is installed on the telescopic end of locking cylinder (3032); A locking guide plate (3034) is mounted on a locking push plate (3033) and is parallel to the locking push plate (3033); At least two parallel locking push pins (3035), one end of which is mounted on a locking guide plate (3034); Among them, the locking cylinder (3032) drives the locking push column (3035) to extend into the positioning hole of the transverse support wire support groove (302) and locks the vertical rod of the back net in the transverse support wire support groove (302).

7. The bending and forming apparatus according to claim 1, characterized in that, The bending mechanism (4) for the extension section of the transverse support steel wire includes: The first bending structure (401) is used to bend the first bending portion of the transverse support wire extension upward. The second bending structure (402) is used to bend the second bending part of the transverse support wire extension section downward after the first bending part of the transverse support wire extension section has completed the upward bending. The first bending structure (401) is disposed on the base (1); the second bending structure (402) is installed on the first bending structure (401).

8. The bending and forming apparatus according to claim 7, characterized in that, The first bending structure (401) includes: The first bent mounting post (4011) is fixedly mounted on the base (1); A bending push cylinder (4012) is fixedly mounted on a first bending mounting post (4011); A bending push slide rail (4013) is mounted on a bending push cylinder (4012); A bending push plate (4014) is mounted on one end of a bending push slide rail (4013) and on the other end of a bending push cylinder (4012); The first bending mount (4015) is mounted at the other end of the bending push slide rail (4013); The first bending mounting shaft (4016) has one end fixedly mounted on the first bending mounting body (4015) and is perpendicular to the first bending mounting body (4015); A fan-shaped bending and rotating plate (4017) is mounted on a first bending mounting shaft (4016) via a bearing; a first driven tooth (4018) is provided on the side surface of the fan-shaped bending and rotating plate (4017) near the center. The first guide mounting plate (4019) is fixedly mounted on the first bending mounting shaft (4016) at its center; The first guide block (40110) is fixedly installed on the first guide mounting plate (4019); The first limiting block (40111) is fixedly installed on the first guide mounting plate (4019) and forms a first gap with the first guide block (40110); the extension section of the transverse support steel wire is located in the first gap; The first bending block (40112) is mounted on the fan-shaped bending rotating plate (4017); the first bending block (40112) is provided with a first bending groove (40113). The first bending motor (40114) is mounted on the first bending mounting body (4015); The first drive gear (40115) is mounted on the rotating end of the first bending motor (40114); the first drive gear (40115) meshes with the first driven gear (4018); The first limiting post (40116) is fixedly installed on the base (1); the first limiting post (40116) is provided with a first limiting groove (40117); the width of the first limiting groove (40117) is the same as the thickness of the fan-shaped bending and rotating plate (4017); The first bending motor (40114) drives the first bending block (40112) on the fan-shaped bending rotating plate (4017) to rotate upward, so that the extension section of the transverse support steel wire located in the first gap bends upward along the arc edge of the first guide block (40110) to form the first bending part; when the edge of the fan-shaped bending rotating plate (4017) moves into the first limiting groove (40117), the bending of the extension section of the transverse support steel wire is stopped and this state is maintained.

9. The bending and forming apparatus according to claim 8, characterized in that, The second bending structure (402) includes: The second bending mounting block (4021) is mounted on the bending push slide rail (4013); The second bending mount (4022) is mounted on the second bending mount (4021); The second bending mounting shaft (4023) is fixedly mounted at one end on the second bending mounting body (4022); the second bending mounting shaft (4023) is inclinedly mounted on the second bending mounting block (4021); The second bending rotating plate (4024) is mounted on the second bending mounting shaft (4023) by a bearing; the side surface of the second bending rotating plate (4024) is provided with a second driven tooth (4025). The second guide block (4026) is fixedly mounted on the second bending mounting shaft (4023) at its center; the second guide block (4026) is located outside the second bending rotating plate (4024); The second bending block (4027) is mounted on the second bending rotating plate (4024); the second bending block (4027) is provided with a second bending groove (4028); a second gap is formed between the second bending groove (4028) and the second guide block (4026), and the extension section of the transverse support steel wire is located in the second gap; The second bending motor (4029) is mounted on the second bending mounting body (4022); The second drive gear (40210) is mounted on the rotating end of the second bending motor (4029); the second drive gear (40210) meshes with the second driven gear (4025); The second bending motor (4029) drives the second bending block (4027) on the second bending rotating plate (4024) to move downward, so that the extension section of the transverse support steel wire located in the second gap bends downward along the arc edge of the second guide block (4026) to form the second bending part.

10. A bending method, characterized in that, This method is applicable to the bending forming apparatus according to any one of claims 1-9, and the method includes: S1. Confirm that the base (1) is stable and fixed, and that the back net positioning clamping mechanism (2), the transverse support wire clamping mechanism (3), and the transverse support wire extension bending mechanism (4) are all in the initial reset state; check that the extension and retraction states of the transverse pressing cylinder (2014), the vertical pressing cylinder (2022), the locking cylinder (3032), and the bending pushing cylinder (4012) are normal, and that the first bending motor (40114) and the second bending motor (4029) are operating without abnormalities; confirm that there are no foreign objects in the first limit groove (40117), each support groove, and the bending groove to ensure smooth subsequent operations; S2. Place the car seat back net to be processed on the back net positioning and clamping mechanism (2): embed the crossbar of the back net into the transverse support groove (2012) of the transverse support mounting column (2011) so that the crossbar fits against the inner wall of the transverse support groove (2012); place the two vertical bars of the back net on the inclined surface of the vertical downward clamping block (2021) of the two symmetrically arranged vertical support clamping structures (202) to ensure that the vertical bars are placed flat; at the same time, adjust the position of the back net so that the wrapping part of the transverse support wire and the back net vertical bar is aligned with the transverse support wire support groove (302) of the transverse support wire clamping mechanism (3). S3. Start the transverse pressing cylinder (2014). The telescopic end of the transverse pressing cylinder (2014) drives the transverse upper pressing block (2015) to move. Under the guidance of the transverse flipping connecting block (2017), the transverse upper pressing block (2015) flips smoothly and presses the crossbar of the back net, so that the crossbar is in close contact with the surface of the transverse support mounting column (2011), and the positioning and fixing of the crossbar is completed. S4. Simultaneously start the vertical clamping cylinders (2022) of the two vertical support clamping structures (202). The telescopic end of the vertical clamping cylinder (2022) drives the vertical upward clamping block (2023), which flips and presses down with the cooperation of the vertical flipping connecting block (2025), pressing the vertical rod of the back net onto the inclined surface of the vertical downward clamping block (2021), thus completing the overall positioning and clamping of the back net. At this time, the back net is in an inclined state and fits the device due to the stepped height difference between the back net positioning and clamping mechanism (2) and the transverse support steel wire clamping mechanism (3). S5. Start the locking cylinder (3032) of the transverse support wire clamping mechanism (3). The telescopic end of the locking cylinder (3032) pushes the locking push plate (3033) and the locking guide plate (3034) to move, driving at least two parallel locking push pins (3035) to extend into the positioning holes of the transverse support wire support groove (302). At this time, the entanglement of the transverse support wire and the back net vertical rod, and the transverse support wire are all limited to the transverse part of the transverse support wire support groove (302), and the back net vertical rod is limited to the vertical part. The locking push pin (3035) locks and fixes the vertical rod to prevent the transverse support wire from shifting during the subsequent bending process. S6. Confirm that the extension of the transverse support steel wire passes through the first gap formed by the first guide block (40110) and the first limiting block (40111), and corresponds to the first bending groove (40113) of the first bending block (40112). S7. Start the first bending motor (40114). The first bending motor (40114) drives the first drive gear (40115) to rotate. Through the meshing transmission between the first drive gear (40115) and the first driven gear (4018) on the fan-shaped bending rotating plate (4017), the fan-shaped bending rotating plate (4017) is driven to rotate upward around the first bending mounting shaft (4016). S8. The fan-shaped bending rotating plate (4017) drives the first bending block (40112) to rotate upward synchronously. Under the constraint of the first bending groove (40113), the extended section of the transverse support steel wire bends upward along the arc edge of the first guide block (40110). When the edge of the fan-shaped bending rotating plate (4017) enters the first limiting groove (40117) of the first limiting post (40116), the first bending motor (40114) stops running, maintains the current state, and completes the forming of the first bending part. S9. After confirming the formation of the first bend, the subsequent part of the transverse support wire extension enters the second gap formed by the second bending groove (4028) of the second guide block (4026) and the second bending block (4027); S10. Start the second bending motor (4029). The second bending motor (4029) drives the second drive gear (40210) to rotate. Through the meshing transmission between the second drive gear (40210) and the second driven gear (4025) on the second bending rotating plate (4024), the second bending rotating plate (4024) is driven to rotate downward around the second bending mounting shaft (4023). S11. The second bending rotating plate (4024) drives the second bending block (4027) to move downward synchronously. Under the constraint of the second bending groove (4028), the extended section of the transverse support steel wire bends downward along the arc edge of the second guide block (4026) to form the second bending part. According to the design requirements, by controlling the running angle of the second bending motor (4029), the two bending structures are made to form a hook-shaped, snap-fit ​​or fit-fitting target bending structure, and then the second bending motor (4029) is stopped. S12. Sequentially control the second bending motor (4029) and the first bending motor (40114) to reverse, driving the second bending rotating plate (4024) and the fan-shaped bending rotating plate (4017) back to their initial positions; start the bending push cylinder (4012), driving the bending push slide rail (4013) and each bending component to reset; S13. Sequentially control the locking cylinder (3032), vertical pressing cylinder (2022), and horizontal pressing cylinder (2014) to reset, the locking push column (3035) to exit the positioning hole, and the vertical pressing block (2023) and horizontal pressing block (2015) to release the pressing on the back net. S14. Remove the bent car seat back net from the device to complete a single bending operation; if continuous processing is required, repeat S2-S13.

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