A follow-up cloth hanging needle mechanism for an interior trim skin

Abstract

This utility model discloses a follow-up fabric hanging needle mechanism for automotive interior leather upholstery, comprising a base, a guide assembly, and a needle assembly. The guide assembly consists of a slide rail and a slider, and the needle assembly is connected to the slider via an adjustment mechanism, allowing it to move along the slide rail to adapt to complex curved surfaces. An adsorption device is provided at the bottom of the base to ensure stable fixation; the chamfered design at the front end of the needle body reduces resistance, and a spring plate at the rear end provides cushioning. This application significantly improves the follow-up performance of the fabric hanging needle, meets the processing needs of different leather materials, and protects the interior panels and leather. It features a simple and compact structure, low cost, and is suitable for large-scale applications.

Description

Technical Field

[0001] This utility model relates to the field of automotive interior manufacturing technology, and in particular to a follow-up fabric hanging needle mechanism for automotive interior upholstery. Background Technology

[0002] Currently, in the automotive interior leather processing industry, leather is typically sewn onto automotive interior panels to enhance aesthetics and comfort. In this process, the fabric hanging needle is widely used as a key tool to fix and guide the leather during sewing. However, in practice, due to the complex shapes and often curved surfaces of automotive interior panels, traditional fabric hanging needles require frequent adjustments to their position and angle, resulting in low operational efficiency. Furthermore, the insufficient follow-up performance of the fabric hanging needle can cause leather shifting or uneven tension during sewing, affecting the final sewing quality. In addition, with the diversification of automotive interior designs, fabric hanging needles need to adapt to leathers of different materials and thicknesses, placing higher demands on their functionality and adaptability. Utility Model Content

[0003] The purpose of this utility model is to provide a follow-up fabric hanging needle mechanism for automotive interior upholstery, which solves the problems mentioned in the background art.

[0004] This utility model is implemented as follows: a follow-up fabric hanging needle mechanism for automotive interior trim. The follow-up fabric hanging needle mechanism for automotive interior trim mainly consists of: a base, a guide component disposed on the base, and a needle assembly mounted on the guide component. The base is the main structure. The guide component and the needle assembly are both fixed to the base by connectors. The needle assembly can move along the trajectory of the guide component to adapt to the surface of automotive interior trim panels with different curvatures.

[0005] A further technical solution of this utility model is: the guide component includes a slide rail and a slider. The slide rail is fixed on the upper surface of the base, and the slider is nested in the slide rail and achieves rolling cooperation through ball bearings. The slider can move along the slide rail in a set direction, thereby driving the needle assembly to move synchronously.

[0006] A further technical solution of this utility model is: the cross-section of the slide rail is in the shape of an "I" and the inner side of the slider is provided with a groove that matches the shape of the slide rail. The slider achieves a stable connection with the slide rail through the tight fit of the groove. At the same time, the outer side of the slider is provided with a threaded hole for assembly with the connecting parts of the needle assembly.

[0007] A further technical solution of this utility model is: the bottom of the slider is provided with an elastic pad, which is fixed to the lower surface of the slider by screws. A certain frictional force is formed between the contact surface of the elastic pad and the slide rail to prevent the slider from displacing when it is not subjected to external force.

[0008] A further technical solution of this utility model is: the needle assembly includes a needle body, a needle seat, and an adjustment mechanism. The needle body is fixed at one end of the needle seat, and the other end of the needle seat is connected to the slider through the adjustment mechanism. The axis of the needle body is consistent with the extension direction of the slide rail, ensuring that the needle assembly maintains a stable posture during movement.

[0009] A further technical solution of this utility model is: the adjustment mechanism includes a knob, a screw, and a limiting block. The knob is fixed at one end of the screw, the screw passes through the needle seat and engages with the threaded hole on the slider, and the limiting block is fixed at the other end of the screw and contacts the inner wall of the needle seat. By rotating the knob, the screw moves axially, thereby adjusting the position of the needle seat relative to the slider.

[0010] A further technical solution of this utility model is: the inner wall of the needle holder is provided with a guide groove, and the outer side of the limiting block is provided with a protrusion that matches the guide groove. The limiting block achieves linear movement through the cooperation of the protrusion and the guide groove, thereby preventing the needle holder from deflecting during the adjustment process.

[0011] A further technical solution of this utility model is: the bottom of the base is provided with an adsorption device, which includes a magnetic base plate and a buffer layer. The magnetic base plate is fixed to the lower surface of the base by bolts, and the buffer layer is bonded to the bottom of the magnetic base plate. The buffer layer is made of flexible material and is used to protect the surface of the car interior panel from scratches.

[0012] A further technical solution of this utility model is: the edge of the magnetic base plate is provided with several through holes, and a rubber ring is embedded in the through holes. The outer side of the rubber ring is in contact with the surface of the car interior panel. By squeezing the rubber ring, it is deformed, thereby enhancing the adhesion between the adsorption device and the interior panel.

[0013] A further technical solution of this utility model is: the front end of the needle body is provided with a chamfer, and the surface of the chamfer is polished to reduce the resistance when the needle body pierces the leather. At the same time, the rear end of the needle body is provided with a groove, and a spring sheet is embedded in the groove. The two ends of the spring sheet are respectively in contact with the inner wall of the needle seat to provide a buffering effect when the needle body is subjected to force.

[0014] A further technical solution of this utility model is: the slide rail is provided with stop blocks at both ends, the stop blocks are fixed to the ends of the slide rail by screws, the inner side of the stop blocks is provided with buffer pads, the buffer pads are in contact with the end face of the slider, which is used to limit the movement range of the slider and prevent the slider from hitting the end of the slide rail and causing damage.

[0015] The beneficial effects of this utility model are as follows: The following utility model discloses a follow-up fabric hanging needle mechanism for automotive interior paneling. Through the cooperation of a slide rail and a slider, the needle assembly can move flexibly, adapting to the complex curved surface structure of automotive interior panels and significantly improving the follow-up performance of the hanging needle. The adsorption device design allows the base to be firmly fixed to the surface of the interior panel without additional manual support, improving operational stability. The introduction of the adjustment mechanism allows the position of the needle assembly to be precisely adjusted according to actual needs, meeting the processing requirements of leathers of different materials and thicknesses. Furthermore, the chamfered design of the needle body and the cushioning function of the spring sheet effectively reduce the risk of leather damage during sewing, ensuring sewing quality. The overall structure is simple and compact, low in cost, and suitable for large-scale application. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the guide component of this utility model.

[0019] The attached figures are labeled as follows:

[0020] 1. Base; 2. Guide assembly; 3. Needle assembly; 4. Slide rail; 5. Slider; 6. Elastic pad; 7. Needle body; 8. Needle seat; 9. Adjustment mechanism; 10. Adsorption device; 11. Magnetic base plate; 12. Buffer layer; 13. Knob; 14. Screw; 15. Limiting block; 16. Stop block. Detailed Implementation

[0021] like Figures 1 to 3 As shown, the following utility model discloses a follow-up fabric hanging needle mechanism for automotive interior upholstery, which consists of multiple components, including a base 1, a guide assembly 2, a needle assembly 3, and an adsorption device 10. The connection relationships, positional relationships, and mutual cooperation relationships of each component are described in detail below with reference to the accompanying drawings.

[0022] The base 1 is the main structure, and its overall shape is a rectangular plate made of high-strength aluminum alloy to ensure sufficient rigidity and lightweight. The upper surface of the base 1 has a mounting groove for installing the guide assembly 2. The mounting groove is arranged along the length of the base 1, and threaded holes are machined on both sides of the mounting groove for fixing the guide assembly 2 to the base 1 with bolts. The bottom of the base 1 has an adsorption device 10, which includes a magnetic base plate 11 and a buffer layer 12. The magnetic base plate 11 is fixed to the lower surface of the base 1 with four bolts. The bolts pass through through holes in the base 1 and are screwed into pre-drilled threaded holes in the magnetic base plate 11 to achieve a secure connection. The buffer layer 12 is made of flexible silicone material with a thickness of 3mm and is adhered to the lower surface of the magnetic base plate 11 with double-sided adhesive. The magnetic base plate 11 has several through holes on its edge, and a rubber ring is embedded in each through hole. The outer side of the rubber ring is in contact with the surface of the car interior panel. When the base 1 is placed on the interior panel, the rubber ring is squeezed and deformed, thereby enhancing the adhesion between the adsorption device 10 and the interior panel.

[0023] The guide assembly 2 includes a slide rail 4 and a slider 5. The slide rail 4 is fixed to a mounting groove on the upper surface of the base 1 by bolts. The slide rail 4 has an "I"-shaped cross-section, with protrusions at both ends to limit the movement range of the slider 5 within the slide rail 4. The slider 5 is nested within the slide rail 4. The inner side of the slider 5 has a groove that matches the shape of the slide rail 4. The groove is precisely machined to ensure a tight fit between the slider 5 and the slide rail 4. The outer side of the slider 5 has two threaded holes for assembly with the connector of the needle assembly 3. The bottom of the slider 5 has an elastic washer 6, which is fixed to the lower surface of the slider 5 by two screws. A certain friction is formed between the contact surface of the elastic washer 6 and the slide rail 4 to prevent the slider 5 from shifting when no external force is applied. The slide rail 4 has stop blocks 16 at both ends. The stop blocks 16 are fixed to the ends of the slide rail 4 by screws. The inner side of the stop block 16 is provided with a buffer pad. The buffer pad is made of polyurethane material with a thickness of 2mm. The buffer pad contacts the end face of the slider 5 to limit the movement range of the slider 5 and prevent the slider 5 from hitting the end of the slide rail 4 and causing damage.

[0024] The needle assembly 3 includes a needle body 7, a needle holder 8, and an adjustment mechanism 9. The needle body 7 is fixed to one end of the needle holder 8. The front end of the needle body 7 has a chamfer, the surface of which is polished, and the chamfer angle is 30° to reduce the resistance when the needle body 7 pierces the leather. The rear end of the needle body 7 has a retaining groove, in which a spring plate is embedded. The two ends of the spring plate contact the inner wall of the needle holder 8. The spring plate is made of stainless steel with a thickness of 0.5mm and is used to provide a cushioning effect when the needle body 7 is subjected to force. The other end of the needle holder 8 is connected to the slider 5 through the adjustment mechanism 9. The inner wall of the needle holder 8 has a guide groove that extends along the axial direction of the needle holder 8. The width of the guide groove is slightly larger than the protrusion width of the limiting block 15 to ensure that the limiting block 15 can slide freely within the guide groove. The adjustment mechanism 9 includes a knob 13, a screw 14, and a limiting block 15. The knob 13 is fixed to one end of the screw 14, which passes through the needle seat 8 and engages with a threaded hole on the slider 5. The limiting block 15 is fixed to the other end of the screw 14. The outer side of the limiting block 15 has a protrusion that matches the guide groove. The limiting block 15 achieves linear movement through the engagement of the protrusion and the guide groove, preventing the needle seat 8 from deflecting during adjustment. By rotating the knob 13, the screw 14 is moved axially, thereby adjusting the position of the needle seat 8 relative to the slider 5 with an adjustment accuracy of 0.1 mm.

[0025] In actual operation, the base 1 is first fixed to the surface of the car interior panel using the adsorption device 10. The magnetic base plate 11 in the adsorption device 10 is tightly attached to the surface of the interior panel, and the rubber ring is deformed by compression, thereby enhancing the adhesion between the adsorption device 10 and the interior panel. Subsequently, the position of the slider 5 on the slide rail 4 is adjusted according to the curvature of the interior panel. The slider 5 achieves rolling engagement through ball bearings, thereby driving the needle assembly 3 to move synchronously. The movement range of the slider 5 is limited by the stop block 16, and the buffer pad inside the stop block 16 effectively prevents the slider 5 from impacting the end of the slide rail 4 and causing damage. When the slider 5 moves to the target position, the friction between the elastic pad 6 and the slide rail 4 keeps the slider 5 stable. Next, the position of the needle seat 8 relative to the slider 5 is adjusted by the adjustment mechanism 9. Rotating the knob 13 causes the screw 14 to move axially, and the limiting block 15 achieves linear movement through the engagement of the protrusion and the guide groove, thereby precisely adjusting the position of the needle body 7. After adjustment, the axis of the needle body 7 is consistent with the extension direction of the slide rail 4, ensuring that the needle assembly 3 maintains a stable posture during movement. Finally, the leather is placed on the surface of the interior panel, and the device is started so that the needle 7 pierces the leather and completes the sewing operation. The chamfered design at the front end of the needle 7 and the spring buffer function at the rear end effectively reduce the risk of damage to the leather during the sewing process.

[0026] As can be seen from the above specific embodiments, the following-motion fabric hanging needle mechanism for automotive interior paneling of this utility model achieves flexible movement of the needle assembly 3 through the cooperation of the slide rail 4 and the slider 5, which can adapt to the complex curved surface structure of automotive interior panels. The design of the adsorption device 10 allows the base 1 to be firmly fixed to the surface of the interior panel without additional manual support, improving operational stability. The introduction of the adjustment mechanism 9 allows the position of the needle assembly 3 to be precisely adjusted according to actual needs, meeting the processing requirements of leathers of different materials and thicknesses. In addition, the chamfered design of the needle body 7 and the cushioning function of the spring sheet effectively reduce the risk of damage to the leather during the sewing process, ensuring sewing quality. The overall structure is simple and compact, low in cost, and suitable for large-scale promotion and application.

[0027] To enable those skilled in the art to fully understand and implement this utility model, the specific implementation principles of this utility model are further explained below in conjunction with specific application scenarios.

[0028] First, the base 1 is fixed to the surface of the automotive interior panel using the adsorption device 10. The magnetic base plate 11 in the adsorption device 10 is tightly fitted to the surface of the interior panel, and the rubber ring is deformed under pressure, thereby enhancing the adhesion between the adsorption device 10 and the interior panel. This design utilizes the magnetic adsorption function of the magnetic base plate 11, while simultaneously increasing friction through the elastic deformation of the rubber ring, ensuring that the base 1 can be stably fixed to the interior panel without additional manual support. This structural design is particularly suitable for interior panels with complex curved surfaces, avoiding the inefficiency caused by frequent position adjustments.

[0029] Subsequently, the position of slider 5 on slide rail 4 is adjusted according to the curvature of the interior panel. Slider 5 is nested within slide rail 4 and achieves rolling engagement through ball bearings, thereby driving the needle assembly 3 to move synchronously. The movement range of slider 5 is limited by stop block 16, and the buffer pad inside stop block 16 effectively prevents slider 5 from impacting the end of slide rail 4 and causing damage. When slider 5 moves to the target position, the friction between elastic pad 6 and slide rail 4 keeps slider 5 stable. The "I"-shaped design of slide rail 4 and the precision machining of the inner groove of slider 5 ensure a tight fit between the two, thereby improving follow-up performance and reducing the risk of leather shifting or uneven tension during sewing.

[0030] Next, the position of the needle holder 8 relative to the slider 5 is adjusted using the adjustment mechanism 9. Rotating the knob 13 causes the screw 14 to move axially, and the limiting block 15 achieves linear motion through the cooperation of its protrusion and guide groove, thereby precisely adjusting the position of the needle body 7. The inner wall of the needle holder 8 is provided with a guide groove, and the outer protrusion of the limiting block 15 matches the guide groove, ensuring that the needle holder 8 always maintains linear motion during adjustment and avoiding deflection. This adjustment method achieves a high-precision adjustment of 0.1mm, which can meet the processing needs of leathers of different materials and thicknesses. In addition, the axis of the needle body 7 is consistent with the extension direction of the slide rail 4, ensuring that the needle assembly 3 maintains a stable posture during movement, further improving the sewing quality.

[0031] Finally, the leather is placed on the interior panel surface, and the equipment is activated to allow the needle 7 to pierce the leather and complete the sewing operation. The chamfered front end of the needle 7 is polished and has a 30° chamfer angle to reduce resistance when the needle 7 pierces the leather. A spring sheet, made of stainless steel and 0.5mm thick, is embedded in the groove at the rear end of the needle 7 to provide cushioning when the needle 7 is under force. This design effectively reduces the risk of damage to the leather during the sewing process, ensuring the final sewing quality.

[0032] As can be seen from the above steps, the following-motion fabric hanging needle mechanism for automotive interior paneling of this utility model achieves flexible movement of the needle assembly 3 through the cooperation of the slide rail 4 and the slider 5, which can adapt to the complex curved surface structure of automotive interior panels. The design of the adsorption device 10 allows the base 1 to be firmly fixed to the surface of the interior panel, improving operational stability. The introduction of the adjustment mechanism 9 allows the position of the needle assembly 3 to be precisely adjusted according to actual needs, meeting the processing requirements of leathers of different materials and thicknesses. In addition, the chamfered design of the needle body 7 and the cushioning function of the spring sheet effectively reduce the risk of leather damage during sewing, ensuring sewing quality. The overall structure is simple and compact, low in cost, and suitable for large-scale promotion and application.

[0033] All content not described in detail in this specification is prior art known to those skilled in the art, and the model parameters of each component are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are prior art and are therefore not shown in the figures, nor will they be described further here.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A follower-type fabric hanging needle mechanism for automotive interior upholstery, characterized in that, The following fabric hanging needle mechanism for the interior leather of the car is mainly composed of a base (1), a guide component (2) set on the base (1), and a needle assembly (3) installed on the guide component (2). The guide component (2) includes a slide rail (4) and a slider (5). The slide rail (4) is fixed on the upper surface of the base (1), and the slider (5) is nested in the slide rail (4) and achieves rolling engagement through ball bearings. The needle assembly (3) is connected to the slider (5) through a connector.

2. The follower-type fabric hanging needle mechanism for automotive interior upholstery according to claim 1, characterized in that: The slide rail (4) has an "I" shaped cross section. The inner side of the slider (5) is provided with a groove that matches the shape of the slide rail (4). The outer side of the slider (5) is provided with a threaded hole for assembly with the connector of the needle assembly (3).

3. The follower-type fabric hanging needle mechanism for automotive interior upholstery according to claim 1, characterized in that: The bottom of the slider (5) is provided with an elastic pad (6), which is fixed to the lower surface of the slider (5) by screws. Friction is formed between the contact surface of the elastic pad (6) and the slide rail (4).

4. The follower-type fabric hanging needle mechanism for automotive interior upholstery according to claim 1, characterized in that: The needle assembly (3) includes a needle body (7), a needle seat (8), and an adjustment mechanism (9). The needle body (7) is fixed at one end of the needle seat (8), and the other end of the needle seat (8) is connected to the slider (5) through the adjustment mechanism (9). The axis of the needle body (7) is consistent with the extension direction of the slide rail (4).

5. The follower-type fabric hanging needle mechanism for automotive interior upholstery according to claim 4, characterized in that: The adjustment mechanism (9) includes a knob (13), a screw (14) and a limiting block (15). The knob (13) is fixed to one end of the screw (14). The screw (14) passes through the needle seat (8) and engages with the threaded hole on the slider (5). The limiting block (15) is fixed to the other end of the screw (14) and contacts the inner wall of the needle seat (8).

6. The follower-type fabric hanging needle mechanism for automotive interior upholstery according to claim 1, characterized in that: The base (1) is provided with an adsorption device (10) at the bottom. The adsorption device (10) includes a magnetic base plate (11) and a buffer layer (12). The magnetic base plate (11) is fixed to the lower surface of the base (1) by bolts, and the buffer layer (12) is bonded to the bottom of the magnetic base plate (11).

7. The follower-type fabric hanging needle mechanism for automotive interior upholstery according to claim 6, characterized in that: The edge of the magnetic base plate (11) is provided with several through holes, and a rubber ring is embedded in the through holes. The outer side of the rubber ring is in contact with the surface of the automotive interior panel.

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