Single shaft driven car seat cover sewing apparatus

Abstract

The utility model discloses a single -shaft drive's car seat surface cover sewing equipment contains the workbench of horizontal work surface, is equipped with linear drive module, slide rail subassembly and sewing machine head on it. The guide rail of slide rail subassembly is perpendicular to linear drive module moving direction, and is fixed on its moving part, and slide seat connects the template, and the template can slide on the horizontal work surface. The guide assembly is equipped between the template and the workbench, and when linear drive module drives slide rail subassembly and template and moves along Y axle, the guide assembly guides the slide of slide seat relative to the guide rail, makes the template present curve compound track movement, and the surface cover fixed on the template can be sewed according to track. The utility model has the advantages of breaking through the complex procedure of traditional double -shaft linkage, simple structure, convenient operation, and the efficiency of car seat surface cover sewing and stitch precision are improved obviously.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat parts manufacturing, specifically to a single-axis driven automotive seat cover sewing device. Background Technology

[0002] In the field of decorative stitching for automotive seat covers, the industry currently widely uses pattern template machines to complete flat stitching and decorative stitching of curved lines. The working principle is as follows: the sewing trajectory is designed in advance in CAD software and a program is generated. This program is then imported into the pattern machine's control system, driving the X and Y axis dual motors to move the sewing machine head along the preset trajectory. Simultaneously, the template fixes the fabric, achieving curved stitching.

[0003] Traditional pattern-making machines are approximately twice the size of ordinary sewing machines, requiring a separate work area. They cannot be integrated into automotive seat production lines for continuous assembly line operation. Furthermore, pattern-making machines use domestically produced sewing machine heads, which lack the capacity to handle thick materials, making it difficult to meet the stitching requirements of multi-layered materials such as automotive seat covers, foam pads, and frame linings. The stitch accuracy also fails to meet the automotive industry's requirements for decorative stitching. In addition, pattern-making machines rely on CAD drawing programming and professional process engineers to debug and switch patterns. However, automotive seat covers come in a variety of styles, with significant differences in the curves and stitch patterns of seat covers across different car models. Frequent pattern changes result in high programming costs and low production efficiency, making it difficult to adapt to the needs of small-batch, multi-variety production.

[0004] Therefore, there is an urgent need for a sewing garment that is programming-free, simple in structure, and easy to operate. Utility Model Content

[0005] In view of this, the present invention provides a single-axis driven car seat cover sewing device, which breaks through the complex process of traditional dual-axis linkage and realizes efficient and precise sewing of decorative lines on car seat covers.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A single-axis driven car seat cover sewing device includes a worktable with a horizontal working surface on top. A linear drive module, a slide rail assembly, and a sewing machine head are mounted on the worktable. The slide rail assembly includes a guide rail and a slide block slidably disposed on the guide rail. The guide rail is fixed to a moving part of the linear drive module. One end of the slide block is connected to a template, and the template is slidably supported on the horizontal working surface.

[0008] The extension direction of the guide rail is perpendicular to the movement direction of the linear drive module. The template slides freely along the X-axis. The linear drive module is used to drive the slide rail assembly and the template as a whole to move along the Y-axis. A guide assembly is provided between the template and the worktable. During the movement of the slide rail assembly and the template as a whole, under the guidance of the guide assembly, the slide block can slide relative to the guide rail so that the template moves in a curved composite trajectory on the horizontal working surface.

[0009] The upper surface of the template is used to fix and install the cover to be sewn, and the sewing machine head has a sewing needle positioned directly opposite the template.

[0010] By adopting the above structure, the linear motion in a single direction is transformed into a composite motion of the planar curve of the template through a single-axis linear drive module combined with a guide rail assembly and a guide assembly. This enables complex sewing trajectories that do not require programming, simplifies the traditional multi-axis drive structure, eliminates the need for programming, reduces equipment costs, and improves sewing accuracy and efficiency.

[0011] Preferably, the guiding component includes a guide groove disposed on the template and a guide portion fixed on the horizontal working surface. The guide groove is slidably fitted onto the guide portion, and at least partially aligns with the sewing trajectory of the fabric cover. Using this structure, curved motion is achieved through a mechanical structure. The guide groove and guide portion cooperate to provide precise constraints for the template to move along the target sewing curve, resulting in a simple, reliable, and highly stable design.

[0012] Preferably, the slide rail assembly includes two sets of guide rails and a slide block slidably mounted on the two sets of guide rails. Below the slide block are two sliders that respectively cooperate with the two sets of guide rails. This structure enhances the sliding stability of the template, reduces offset and vibration during movement, and improves sewing quality.

[0013] Preferably, the template is detachably connected to one side of the slide via a quick-change assembly. The quick-change assembly includes two clamps fixed to one side of the slide, and two vertically upward-extending connecting posts are fixed to the end of the template. The two clamps respectively hold the two connecting posts. This structure enables rapid disassembly and replacement of the template, shortening changeover time, improving production efficiency, and adapting to diversified production. The clamps, by holding the connecting posts, provide a secure connection and are easy to operate.

[0014] Preferably, the template is provided with a positioning frame with an open side, the positioning frame is used to position and install the face cover to be sewn, and the template is provided with an avoidance groove on the open side of the positioning frame, the avoidance groove corresponding to the sewing trajectory of the face cover.

[0015] The positioning frame includes a bottom edge along the Y-axis and two side edges perpendicular to the bottom edge. With this structure, the positioning frame ensures accurate positioning of the sewing mask, and the clearance groove provides a path for the sewing needle, ensuring the needle can properly pierce the mask and guaranteeing sewing quality.

[0016] Preferably, a rolling support assembly is provided between the horizontal working surface and the template. The rolling support assembly includes multiple mounting holes arrayed on the horizontal working surface and rolling elements embedded in each mounting hole. The rolling elements protrude from the mounting holes and roll in contact with the bottom surface of the template. This structure supports the template, reduces friction between the template and the horizontal working surface, and makes the template move more smoothly.

[0017] Preferably, each clamp includes a fixed part and a movable part, which are arranged opposite each other. A groove adapted to the connecting column is formed near the end of each clamp. The movable part is driven by a telescopic cylinder. With this structure, the grooves of the fixed and movable parts cooperate to quickly and stably clamp the connecting column.

[0018] Preferably, the clearance groove includes straight segments extending at both ends along the Y-axis and a curved segment in the middle. The contour of the curved segment is the same as the sewing curve, and the contour of the guide groove is adapted to the clearance groove. With the above structure, the straight segments facilitate rapid needle movement, and the curved segment conforms to the sewing curve, ensuring that the template movement is consistent with the sewing path and improving sewing accuracy.

[0019] Preferably, the clearance groove and the guide groove are arranged opposite each other in parallel. This structure is compact and easy to manufacture.

[0020] Preferably, a sensor is installed on the horizontal working surface at the initial position corresponding to the clearance groove. This structure enables automated sewing start-up, improves production efficiency, and ensures safety.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. During the overall movement of the linear drive module, the slide rail assembly, and the template, the guide assembly forces the slide block to slide relative to the guide rail, enabling the template to achieve a curved trajectory movement with both X and Y directions on the horizontal working surface. Based on this, the face mask is fixed on the template, and the face mask moves along the curved trajectory of the template, allowing the sewing machine head above to sew the face mask along the curved trajectory.

[0023] 2. The dual-axis linkage control of traditional equipment is realized through a single linear drive module, which has the technical advantages of no programming required, simple structure, good equipment compactness, low cost and convenient operation.

[0024] 3. The single-axis drive combined with the guide component simplifies the structure compared to the traditional dual-axis pattern making machine, reduces the equipment's footprint, and can be embedded in the automotive seat production line to achieve assembly line operation.

[0025] 4. By replacing programming with physical templates, the structure is simple. When changing models, only the template needs to be replaced. There is no need for CAD drawings or professional debugging, which reduces the cost of changing models and significantly improves the flexibility of small-batch, multi-variety production. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 A schematic diagram illustrating guide groove 2a and clearance groove 2b;

[0028] Figure 3 To show an exploded view of quick-change component 7;

[0029] Figure 4 This is a schematic diagram illustrating the rolling support component 8;

[0030] Figure 5 This is a side view of the present invention. Detailed Implementation

[0031] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0032] like Figure 1 As shown, a single-axis driven car seat cover sewing device includes a worktable 1 with a horizontal working surface 11 on top. A sewing machine head 9 is installed on one side of the worktable 1, and the sewing needle 91 of the sewing machine head 9 is vertically aligned with the template 2 for sewing the cover A fixed on the template 2.

[0033] like Figure 1 and Figure 3 As shown, a linear drive module 3, a slide rail assembly 4, and a template 2 are arranged on the horizontal working surface 11. The linear drive module 3 is arranged along the Y-axis direction of the horizontal working surface 11. The slide rail assembly 4 includes two sets of guide rails 41 arranged along the X-axis direction of the horizontal working surface 11. The two sets of guide rails 41 are fixedly connected to the moving parts of the linear drive module 3. Slide seats 42 are slidably arranged on the two sets of guide rails 41. Two sliders 43 are provided below the slide seats 42, which respectively cooperate with the corresponding guide rails 41 to ensure the stability of the slide seats 42 sliding on the guide rails 41. The template 2 is detachably connected to one end of the slide seat 42 through a quick-change assembly 7, and the template 2 can be slidably supported on the horizontal working surface 11.

[0034] In this embodiment, the linear drive module 3 operates based on the precise control of a servo motor. The servo motor, in conjunction with a ball screw and other transmission devices, converts the motor's rotational motion into linear motion, thereby driving the template 2 to move along the Y-axis. This is conventional technology in the field and will not be elaborated upon further in this embodiment.

[0035] like Figure 2 As shown, a guide assembly 5 is provided between the template 2 and the worktable 1. The guide assembly 5 includes a guide groove 2a disposed on the template 2 and a guide part 11a fixed on the horizontal working surface 11. The guide groove 2a is at least partially aligned with the sewing trajectory of the seat cover, and the guide groove 2a is slidably fitted onto the guide part 11a. When the linear drive module 3 drives the slide rail assembly 4 and the template 2 as a whole to move along the Y-axis, under the guidance of the guide assembly 5, due to the cooperation constraint between the guide groove 2a and the guide part 11a, the slide block 42 can slide freely relative to the guide rail 41 along the X-axis, thereby causing the template 2 to form a curved composite trajectory movement on the horizontal working surface 11, meeting the requirements of complex curved sewing of automotive seat covers.

[0036] like Figure 1 and Figure 3 As shown, the upper surface of template 2 is provided with a positioning frame 2c with one open side. The positioning frame 2c consists of a bottom edge 2c1 along the Y-axis and two side edges 2c2 perpendicular to the bottom edge 2c1, used to position the cover A to be sewn and restrict the displacement of the cover A during the sewing process. Figure 5 As shown, a pressing mechanism 10 is also provided next to the positioning frame 2c. The pressing mechanism 10 can press the cover A to be sewn, and firmly fix the cover A to be sewn on the template 2, further ensuring that the cover A will not be displaced during the sewing process and ensuring sewing accuracy.

[0037] like Figure 3 As shown, on the open side of the positioning frame 2c, the template 2 is provided with an avoidance groove 2b. The avoidance groove 2b corresponds to the sewing trajectory of the face mask A. It includes a straight segment 2b1 extending along the Y-axis at both ends and a curved segment 2b2 in the middle. The contour of the curved segment 2b2 is the same as the actual required sewing curve. The straight segment 2b1 can provide a fast forward and backward channel for the sewing needle 91, shortening the idle travel time and improving sewing efficiency. Moreover, the straight segment 2b1 and the curved segment 2b2 are smoothly connected to ensure that the sewing stitch transition is natural and continuous. At the same time, the avoidance groove 2b and the guide groove 2a are arranged parallel to each other. The contour of the guide groove 2a is adapted to the avoidance groove 2b. The two cooperate with each other to guide the template 2 to move according to the preset sewing trajectory. A sensor 6 is installed on the horizontal working surface 11 at the initial position corresponding to the clearance groove 2b. The sensor 6 can detect whether the cover A to be sewn is fixed in place. Only when the cover A to be sewn is correctly fixed in the positioning frame 2c of the template 2 can the sewing machine head 9 be started to ensure the accuracy and safety of the sewing work.

[0038] like Figure 3 As shown, the quick-change assembly 7 includes two clamps 72 fixed to one side of the slide 42, and two vertically upward-extending connecting posts 73 fixed to the end of the template 2. Each clamp 72 includes a fixed part 721 and a movable part 722, which are arranged opposite each other. The near ends of both clamps have grooves 72a adapted to the connecting posts 73. The movable part 722 is driven by a telescopic cylinder 723. When the template 2 needs to be installed, the telescopic cylinder 723 is activated, and the movable part 722 moves closer to the fixed part 721, causing the grooves 72a to tightly clamp the connecting posts 73, thus firmly fixing the template 2 to the slide 42. When the template 2 needs to be replaced, the telescopic cylinder 723 is activated again, and the movable part 722 moves away from the fixed part 721, releasing the connecting posts 73. The template 2 can then be easily removed and a new template replaced. The operation is simple and quick, effectively shortening downtime caused by replacing the template 2 and improving production efficiency.

[0039] like Figure 4 As shown, to further improve the smoothness of the template 2 during movement, a rolling support assembly 8 is provided between the horizontal working surface 11 and the template 2. The rolling support assembly 8 includes multiple mounting holes 11b arrayed on the horizontal working surface 11 and rolling elements 81 embedded in each mounting hole 11b. In this embodiment, the rolling elements 81 are ball bearings, with the ball bearing portion protruding from the mounting hole 11b and making rolling contact with the bottom surface of the template 2. The rolling support assembly 8 can evenly support the template 2, greatly reducing the friction between the template 2 and the horizontal working surface 11. This not only reduces the driving force required for the template 2 to move but also improves the stability of the template 2's movement, further ensuring the accuracy of the sewing.

[0040] like Figures 1-3As shown, the workflow of the car seat cover sewing equipment is as follows: First, the connecting column 73 of the template 2 is clamped by the clamp 72 of the quick-change assembly 7 to complete the installation of the template 2; the cover A to be sewn is placed in the positioning frame 2c of the template 2, and the cover A is pressed with the retainer 10 to ensure that the cover A is firmly fixed; at this time, the sensor 6 on the horizontal working surface 11 detects whether the cover A is fixed in place. If the detection is qualified, the linear drive module 3 is started. The linear drive module 3 drives the slide rail assembly 4 and the template 2 to move linearly along the Y-axis. At the same time, the guide groove 2a on the template 2 slides relative to the guide part 11a. Constrained by the contour of the guide groove 2a and the guide part 11a, the slide block 42 slides relative to the guide rail 41 along the X-axis, driving the template 2 to move according to the preset curve. The curved segment 2b2 of the clearance groove 2b fits the sewing curve, and the straight segment 2b1 assists the sewing needle 91 to advance and retreat, so that the sewing needle 91 pierces the fabric along the clearance groove 2b to complete the curved sewing. If the cover style needs to be changed, the telescopic cylinder 723 is activated to release the clamp 72, and production can continue after quickly replacing the template 2. In this embodiment, the linear motion of the linear drive module 3 is converted into the curved motion of the template 2 through the cooperation of the guide groove 2a and the guide part 11a by a single-axis linear drive combined with mechanical guidance. No programming is required, the structure is simple, the operation is convenient, and it can achieve efficient and precise sewing of car seat covers.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A single-axis driven automotive seat cover sewing device, characterized in that: The machine includes a worktable (1) with a horizontal working surface (11) on top. A linear drive module (3), a slide rail assembly (4), and a sewing machine head (9) are installed on the worktable (1). The slide rail assembly (4) includes a guide rail (41) and a slide block (42) slidably disposed on the guide rail (41). The guide rail (41) is fixed to the moving part of the linear drive module (3). One end of the slide block (42) is connected to a template (2), which is slidably supported on the horizontal working surface (11). The extension direction of the guide rail (41) is perpendicular to the moving direction of the linear drive module (3). The template (2) slides freely along the X-axis. The linear drive module (3) is used to drive the slide rail assembly (4) and the template (2) to move along the Y-axis. A guide assembly (5) is provided between the template (2) and the worktable (1). During the movement of the slide rail assembly (4) and the template (2), under the guidance of the guide assembly (5), the slide block (42) can slide relative to the guide rail (41) so that the template (2) moves in a curved composite trajectory on the horizontal working surface (11). The upper surface of the template (2) is used to fix the face covering (A) to be sewn, and the sewing machine head (9) has a sewing needle (91) positioned opposite the template (2).

2. The single-axis driven automotive seat cover sewing device according to claim 1, characterized in that: The guide component (5) includes a guide groove (2a) disposed on the template (2) and a guide part (11a) fixed on the horizontal working surface (11). The guide groove (2a) is slidably sleeved on the guide part (11a), and the guide groove (2a) is at least partially consistent with the sewing trajectory of the face cover.

3. The single-axis driven automotive seat cover sewing equipment according to claim 1, characterized in that: The slide rail assembly (4) includes two sets of guide rails (41) and a slide block (42) slidably disposed on the two sets of guide rails (41). Below the slide block (42) are two sliders (43) that respectively cooperate with the two sets of guide rails (41).

4. The single-axis driven automotive seat cover sewing device according to claim 1, characterized in that: The template (2) is detachably connected to one side of the slide (42) via a quick-change assembly (7). The quick-change assembly (7) includes two clamps (72) fixed to one side of the slide (42). Two vertically upward extending connecting posts (73) are fixed at the end of the template (2). The two clamps (72) respectively clamp the two connecting posts (73).

5. A single-axis driven automotive seat cover sewing device according to claim 2, characterized in that: The template (2) is provided with a positioning frame (2c) with an open side. The positioning frame (2c) is used to position and install the face cover (A) to be sewn. The template (2) is provided with an avoidance groove (2b) on the open side of the positioning frame (2c). The avoidance groove (2b) corresponds to the sewing trajectory of the face cover (A). The positioning frame (2c) includes a bottom edge (2c1) along the Y-axis and two side edges (2c2) perpendicular to the bottom edge (2c1).

6. The single-axis driven automotive seat cover sewing device according to claim 1, characterized in that: A rolling support assembly (8) is provided between the horizontal working surface (11) and the template (2). The rolling support assembly (8) includes multiple mounting holes (11b) arrayed on the horizontal working surface (11) and rolling elements (81) embedded in each mounting hole (11b). The rolling elements (81) partially protrude from the mounting holes (11b) and roll in contact with the bottom surface of the template (2).

7. The single-axis driven automotive seat cover sewing equipment according to claim 4, characterized in that: Each clamp (72) includes a fixed part (721) and a movable part (722). The fixed part (721) and the movable part (722) are arranged opposite each other, and a groove (72a) adapted to the connecting column (73) is opened near the end. The movable part (722) is driven by a telescopic cylinder (723).

8. A single-axis driven automotive seat cover sewing device according to claim 5, characterized in that: The clearance groove (2b) includes straight segments (2b1) extending at both ends along the Y-axis and a curved segment (2b2) ​​in the middle. The contour of the curved segment (2b2) ​​is the same as the sewing curve, and the contour of the guide groove (2a) is adapted to the clearance groove (2b).

9. A single-axis driven automotive seat cover sewing device according to claim 5, characterized in that: The clearance groove (2b) and the guide groove (2a) are arranged in parallel opposite directions.

10. A single-axis driven automotive seat cover sewing device according to claim 5, characterized in that: A sensor (6) is installed on the horizontal working surface (11) at the initial position corresponding to the clearance groove (2b).

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