Automobile seat cover cutting and sewing positioning mechanism

Abstract

This utility model discloses a sewing positioning mechanism for automotive seat cover panels, including a positioning base plate. The positioning base plate has at least one receiving groove for accommodating a lower and upper panel to be sewn. The bottom of the receiving groove has two upward-protruding stepped positioning structures, each including a first column and a second column at the top of the first column. The diameter of the second column is smaller than that of the first column, and the second column is coaxially arranged with the first column, respectively used for positioning and installing clearance holes on the lower and upper panel panels. The circumferential contour of the receiving groove matches the outer contour of the upper panel, and the bottom of the receiving groove has a recessed groove whose circumferential contour matches the outer contour of the lower panel. The beneficial effect of this utility model is that it replaces traditional outer contour positioning with internal feature positioning, thus balancing the accuracy and efficiency of sewing positioning.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing, specifically to a sewing and positioning mechanism for automotive seat cover panels. Background Technology

[0002] In the manufacturing process of car seats, the sewing quality of the seat covers directly affects the overall performance and appearance of the seats. Traditional seat cover sewing has significant technical bottlenecks: manual operation is inefficient, product quality is difficult to guarantee, and the defect rate remains high. As the automotive manufacturing industry continues to demand higher production efficiency and product quality, the industry has gradually developed automated sewing technology, but most of these technologies rely on the outer contour positioning of the cut pieces, depending entirely on the shape and size of the outer edges of the cut pieces.

[0003] Seat covers typically consist of a lower layer and an upper layer. The lower layer is often made of stiff carpet fabric for support and shaping, while the upper layer is made of decorative fabrics such as genuine leather or imitation leather, which combine aesthetics and durability. At the top of the seat back, where the headrest rod is inserted, the cover has two sets of clearance holes. During sewing, ensuring that these clearance holes on the lower and upper layers are coaxially aligned is crucial for guaranteeing the quality of the seat cover installation. However, in traditional sewing processes, positioning the cover using its outer contour only indirectly calibrates the coaxial accuracy of the clearance holes, resulting in significant deviations between the hole center and the design reference, severely impacting subsequent assembly compatibility. For precise calibration, operators must compare the clearance hole positions with the edge reference lines on a piece-by-piece basis, leading to low processing efficiency in this area and making it impossible to balance efficiency and accuracy. Utility Model Content

[0004] In view of this, the present invention provides a sewing positioning mechanism for automotive seat cover pieces, which uses internal features for positioning, taking into account both positioning accuracy and positioning efficiency.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A sewing positioning mechanism for automotive seat cover panels includes a positioning base plate. The positioning base plate has at least one receiving groove for receiving a lower panel and an upper panel to be sewn. The bottom of the receiving groove has two upwardly protruding stepped positioning structures. Each stepped positioning structure includes a first column and a second column located at the top of the first column. The diameter of the second column is smaller than the diameter of the first column. The second column and the first column are coaxially arranged and are used to position and install clearance holes on the lower panel and the upper panel, respectively.

[0007] The circumferential contour of the receiving groove matches the outer contour of the upper layer fabric piece, and the bottom of the receiving groove is provided with a sink groove, the circumferential contour of which matches the outer contour of the lower layer fabric piece.

[0008] By adopting the above structure, the upper and lower cut pieces and their clearance holes are directly positioned through the receiving groove, sink, and stepped positioning structure. There is no need for manual drawing and comparison. This not only avoids the hole position deviation problem caused by relying solely on the outer contour positioning, but also reduces the manual calibration time, effectively improves sewing efficiency and assembly accuracy, reduces the defect rate, and balances production efficiency and product quality.

[0009] Preferably, the receiving groove has inwardly protruding first positioning teeth distributed on its groove wall. This structure creates an embedded positioning system, further securing the upper cut piece.

[0010] Preferably, the wall of the settling tank has inwardly protruding second positioning teeth. This structure further secures the lower layer of cut pieces.

[0011] Preferably, both the first and second positioning teeth are V-shaped. Using this structure, the guiding and self-clamping properties allow the cut piece opening to quickly engage with the positioning teeth.

[0012] Preferably, the positioning base plate is provided with a connecting component for connecting to a moving module, thereby moving the positioning base plate along a preset sewing path. The connecting component includes two connecting blocks protruding outwards from one side of the positioning base plate. Each connecting block has a connecting hole at its end furthest from the positioning base plate. These connecting holes can be used to directly connect to a positioning pin on the moving module, or to connect a positioning strip. The positioning strip extends along the length of the positioning base plate and has upward-extending connecting posts at both ends. The moving module can securely clamp the connecting posts. This structure enables quick docking with the moving module via the connecting component, providing two connection methods that are compatible with different types of quilting equipment, thus improving the tooling's versatility.

[0013] Preferably, each end of the positioning strip is provided with a horizontally protruding limiting block, which abuts against the moving module when the positioning base plate reaches the connection position. This structure restricts the position of the positioning base plate, facilitating quick and easy switching and installation of the positioning plate.

[0014] Preferably, the bottom edge of the settling trough is provided with a clearance groove, which is used to avoid the puncture path of the sewing machine needle. This structure provides puncture space for the sewing machine needle.

[0015] Preferably, two receiving slots are arranged side by side on the positioning base plate. This structure improves production efficiency.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The automotive seat cover sewing positioning mechanism provided by this utility model reduces calibration time and improves positioning efficiency and accuracy compared with the traditional outer contour positioning method by using a stepped positioning structure in conjunction with the positioning holes inside the cut piece.

[0018] 2. A connecting component is set on the positioning base plate, which can be detachably connected to the mobile module. The structure is simple and the connection is convenient, which can realize quick template replacement and improve the versatility of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 A schematic diagram illustrating the internal structure of the receiving tank 1a;

[0021] Figure 3 A schematic diagram for positioning the lower layer piece 2;

[0022] Figure 4 A schematic diagram for positioning the upper layer cut piece 3;

[0023] Figure 5 This is a schematic diagram showing the connection via connection hole 41a;

[0024] Figure 6 An exploded view showing the positioning method of the lower layer piece 2 and the upper layer piece 3;

[0025] Figure 7 A cross-sectional view showing the lower layer piece 2 and the upper layer piece 3 after they have been positioned. Detailed Implementation

[0026] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0027] like Figure 1 and Figure 6 As shown, a car seat cover fabric sewing positioning mechanism includes a horizontally arranged positioning base plate 1. The positioning base plate 1 has high strength and good flatness. The positioning base plate 1 is provided with at least one receiving groove 1a. Each receiving groove 1a is used to receive the lower layer fabric piece 2 and the upper layer fabric piece 3 to be sewn. The lower layer fabric piece 2 is usually made of hard carpet fabric, and the upper layer fabric piece 3 is made of leather or fabric.

[0028] like Figure 3 , Figure 4 and Figure 6 As shown, the lower layer fabric piece 2 and the upper layer fabric piece 3 each have two first clearance holes 2a and two second clearance holes 3a, as follows: Figure 2The bottom of the receiving groove 1a shown has two upward-protruding stepped positioning structures 1b. Each stepped positioning structure 1b is a columnar body, including a first column 1b1 and a second column 1b2 located on top of the first column 1b1. The diameter of the second column 1b2 is smaller than that of the first column 1b1. The second column 1b2 is coaxially arranged with the first column 1b1. The two first columns 1b1 are used to position and install the two first clearance holes 2a on the lower layer fabric piece 2, and the two second columns 1b2 are used to position and install the two second clearance holes 3a on the upper layer fabric piece 3. This stepped design allows the lower layer fabric piece 2 and the upper layer fabric piece 3 to be nested and positioned in sequence, ensuring the relative positional accuracy of the two layers of fabric pieces.

[0029] like Figure 7 As shown, the circumferential contour of the receiving groove 1a perfectly matches the outer contour of the upper piece 3, ensuring that the edge of the upper piece 3 fits snugly against the groove wall after it is placed inside. A recessed groove 1c is provided at the bottom of the receiving groove 1a, and its circumferential contour matches the outer contour of the lower piece 2. The lower piece 2 is placed inside the recessed groove 1c, further improving positioning stability. An avoidance groove 1d is provided at the bottom edge of the recessed groove 1c. This avoidance groove 1d perfectly matches the puncture path of the sewing machine needle, preventing the needle from contacting the positioning base plate 1 during sewing and extending the needle's lifespan.

[0030] like Figure 3 , Figure 4 and Figure 6 As shown, the wall of the receiving groove 1a has inwardly protruding first positioning teeth 1a1, and the edge of the upper piece 3 has corresponding first positioning notches 3b that match the first positioning teeth 1a1 one by one. The wall of the sink 1c has inwardly protruding second positioning teeth 1c1, and the edge of the lower piece 2 has corresponding second positioning notches 2b that match the second positioning teeth 1c1. Both the first positioning teeth 1a1 and the second positioning teeth 1c1 are V-shaped. This V-shaped design can automatically guide the piece to fall accurately into the corresponding position during positioning, and prevent the piece from shifting during sewing through the cooperation of the teeth and notches.

[0031] like Figure 1 and 5As shown, the positioning base plate 1 is equipped with a connecting component 4 for connecting to the moving module of the automated sewing equipment. The connecting component 4 has two connection methods: the first is a direct connection, where two connecting blocks 41 protrude outwards from one side of the positioning base plate 1. Each connecting block 41 has a connecting hole 41a at its end furthest from the positioning base plate 1. The connecting hole 41a engages with a positioning pin on the moving module, enabling a detachable connection between the positioning base plate 1 and the moving module. The second connection method is an indirect connection via a positioning strip 42 fixedly connected through the connecting hole 41a. The positioning strip 42 extends along the length of the positioning base plate 1, and both ends are fixed with upward-extending cylindrical connecting posts 43. The moving module can clamp the connecting posts 43 using pneumatic grippers, enabling quick disassembly and replacement. Both ends of the positioning strip 42 have horizontally protruding rectangular limiting blocks 44. When the positioning base plate 1 reaches the connection position, the limiting blocks 44 tightly abut against the positioning surface of the moving module, restricting the position of the positioning base plate 1 and facilitating quick switching and installation of the positioning plate.

[0032] like Figure 6 As shown, the positioning process of the cut pieces is as follows: After connecting the positioning base plate 1 to the moving module via the connecting component 4, the operator first places the lower cut piece 2 in the recess 1c, aligning the first clearance hole 2a on the lower cut piece 2 with the first column 1b1, while the second positioning notch 2b engages with the second positioning tooth 1c1; then, the upper cut piece 3 is placed on top of the lower cut piece 2, aligning the second clearance hole 3a on the upper cut piece 3 with the second column 1b2, while the first positioning notch 3b engages with the first positioning tooth 1a1, ensuring that the two cut pieces are completely aligned. After positioning, the moving module moves the positioning base plate 1 along the preset sewing path, and the sewing machine needle sews along the clearance groove 1d path, completing the edge stitching of the lower cut piece 2 and the upper cut piece 3. After sewing, the cut piece is removed, and the above steps are repeated to prepare for the next sewing. This positioning mechanism uses internal features for positioning, which can significantly improve the sewing accuracy and production efficiency of automotive seat cover pieces, reduce human error, and is suitable for large-scale automated production.

[0033] like Figure 1 As shown in this embodiment, two receiving slots 1a are arranged side by side on the positioning base plate 1. The operator can pre-load two sets of upper and lower cut pieces for the headrest perforation parts into the two receiving slots 1a at the same time. Then, the moving module drives the positioning base plate 1 to move to the sewing machine working area. Through program control, the sewing machine needle will sew the cut pieces in the two receiving slots 1a in sequence, which can efficiently utilize equipment resources, improve efficiency, and avoid the operator from frequently loading and unloading materials.

[0034] 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 sewing and positioning mechanism for automotive seat cover panels, characterized in that: The system includes a positioning base plate (1), which has at least one receiving groove (1a) for receiving a lower layer piece (2) and an upper layer piece (3) to be sewn. The bottom of the receiving groove (1a) has two upward-protruding stepped positioning structures (1b). Each stepped positioning structure (1b) includes a first column (1b1) and a second column (1b2) located on top of the first column (1b1). The diameter of the second column (1b2) is smaller than that of the first column (1b1). The second column (1b2) is coaxially arranged with the first column (1b1) and is used to position and install the clearance holes on the lower layer piece (2) and the upper layer piece (3), respectively. The circumferential contour of the receiving groove (1a) matches the outer contour of the upper piece (3), and the bottom of the receiving groove (1a) is provided with a sink groove (1c), the circumferential contour of the sink groove (1c) matches the outer contour of the lower piece (2).

2. The sewing and positioning mechanism for automotive seat cover pieces according to claim 1, characterized in that: The receiving groove (1a) has inwardly protruding first positioning teeth (1a1) distributed on the groove wall.

3. The sewing and positioning mechanism for automotive seat cover pieces according to claim 2, characterized in that: The wall of the settling tank (1c) has inwardly protruding second positioning teeth (1c1).

4. The sewing and positioning mechanism for automotive seat cover panels according to claim 3, characterized in that: Both the first positioning tooth (1a1) and the second positioning tooth (1c1) are V-shaped.

5. The sewing and positioning mechanism for automotive seat cover panels according to claim 1, characterized in that: The positioning base plate (1) is provided with a connecting component (4). The connecting component (4) is used to connect the moving module to drive the positioning base plate (1) to move along a preset sewing path. The connecting component (4) includes two connecting blocks (41) protruding outward from one side of the positioning base plate (1). The ends of the two connecting blocks (41) away from the positioning base plate (1) are provided with connecting holes (41a). The connecting holes (41a) can be used to directly connect the positioning pin on the moving module, or to connect the positioning strip (42). The positioning strip (42) extends along the length direction of the positioning base plate (1) and has connecting posts (43) extending upward at both ends. The moving module can fix and clamp the connecting posts (43).

6. The sewing and positioning mechanism for automotive seat cover pieces according to claim 5, characterized in that: Both ends of the positioning strip (42) are provided with horizontally protruding limiting blocks (44). When the positioning base plate (1) reaches the connection position, the limiting blocks (44) abut against the moving module.

7. The sewing and positioning mechanism for automotive seat cover pieces according to claim 1, characterized in that: The bottom edge of the sink (1c) is provided with a relief groove (1d), which is used to avoid the puncture path of the sewing machine needle.

8. The sewing and positioning mechanism for automobile seat cover pieces according to claim 1, characterized in that: Two receiving grooves (1a) are arranged side by side on the positioning base plate (1).

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