Luggage case middle frame zipper sewing positioning device and sewing machine

Abstract

The utility model discloses luggage middle frame zipper sewing positioning device and sewing machine, wherein luggage middle frame zipper sewing positioning device, include: fixed base can supply middle frame and enter, guide component sets up in fixed base, and guide component includes misplacement first guide block and second guide block, first guide block is provided with the first channel groove of vertical extension in -through, to supply first zipper, and second guide block is provided with the second channel groove of vertical extension in -through, to supply second zipper, chain block, set up in fixed base and with fixed base between setting up sewing channel, and chain block is located the output side of first channel groove and second channel groove, and chain block is provided with the chain block groove of horizontal extension in -through, to supply first zipper and second zipper superposition pass, and when middle frame moves in sewing channel, and first zipper and second zipper after superposition can cooperate sewing machine head and sew in middle frame. Greatly improve production efficiency and sewing quality, reduce manual operation error.

Description

Technical Field

[0001] This utility model relates to the field of luggage manufacturing technology, and in particular to a luggage frame zipper sewing positioning device, and a sewing machine having a luggage frame zipper sewing positioning device. Background Technology

[0002] In the luggage manufacturing industry, the stitching of the frame and zipper is a crucial process affecting the overall quality and user experience of the product. With the continuous expansion of luggage functionality requirements, the application of double-layer zippers is becoming increasingly widespread, and their stitching process has become an important part of the manufacturing process. From an explosion-proof and reinforcement perspective, the double-layer fabric design significantly enhances the zipper's resistance to damage. The outer layer of fabric can resist scratches from sharp objects or damage from forced opening, while the inner layer, through double-layer zipper teeth, improves the closure strength. Even if the outer layer is damaged, the inner layer can still maintain a complete closure, effectively preventing accidental opening of luggage and providing more reliable security for the items inside. In terms of functional expansion, some designs using double-layer zippers can achieve capacity adjustment. For example, the outer zipper controls the main compartment capacity, while the inner zipper can expand additional space, such as expanding to a 22-inch capacity. This double-layer structure allows for flexible adjustment of the luggage's spatial layout to meet the diverse needs of different users.

[0003] In traditional manufacturing processes, the stitching of the frame and zipper relies primarily on manual labor. Operators must manually align the two zipper layers with the frame before sewing them together using a sewing machine. However, because the two zipper layers need to be precisely overlapped, achieving accurate alignment between them and the frame is extremely difficult. This easily leads to misalignment of the zipper and frame, or misalignment of the overlapping layers. This not only results in cosmetic defects in the finished product but can also affect the zipper's explosion-proof reinforcement and functional expansion capabilities. For example, if the outer zipper is damaged, the inner zipper may not function properly, and the capacity adjustment function may be limited. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a luggage frame zipper sewing and positioning device, which enables the first and second zippers to overlap and then be easily aligned and sewn with the frame, improving production efficiency and sewing quality while reducing human error.

[0005] This utility model also proposes a sewing machine having the above-mentioned luggage box frame zipper sewing positioning device.

[0006] The luggage frame zipper sewing positioning device according to this utility model includes:

[0007] The mounting bracket allows the middle frame to be fitted into it;

[0008] A guide assembly is disposed on the fixed base. The guide assembly includes a first guide block and a second guide block arranged in a staggered manner. The first guide block is provided with a vertically extending first channel groove for the passage of a first zipper, and the second guide block is provided with a vertically extending second channel groove for the passage of a second zipper.

[0009] A zipper block is disposed on the fixed base and a sewing channel is provided between the fixed base and the fixed base. The zipper block is located on the output side of the first channel groove and the second channel groove. The zipper block is provided with a transversely extending zipper groove so that the first zipper and the second zipper can overlap and pass through. When the middle frame moves in the sewing channel, the overlapped first zipper and second zipper can cooperate with the sewing machine head to sew to the middle frame.

[0010] The luggage frame zipper sewing and positioning device according to this utility model has at least the following beneficial effects: The fixed base provides basic support for the fitted frame, and the staggered first and second guide blocks, using their vertically extending first and second channel grooves respectively, accurately guide the independent vertical movement of the first and second zippers, avoiding mutual interference in the initial state of the two zippers; furthermore, the horizontally extending overlapping groove of the overlapping block guides the first and second zippers to the same plane and reliably overlaps, ensuring the alignment accuracy of the two zippers; in addition, the sewing channel formed between the overlapping block and the frame not only provides guidance for the movement of the frame, improving the stability of the frame movement process, but also allows for efficient completion of the sewing process in conjunction with the sewing machine head, effectively solving the problems of difficult alignment of the zipper and frame and easy sewing deviation in traditional manual operation, significantly improving sewing accuracy, consistency, and production efficiency.

[0011] According to some embodiments of the present invention, the zipper sewing positioning device for the middle frame of a suitcase has a cylindrical fixing seat. When the middle frame is inserted and moved, the circumferential surface of the fixing seat can abut against the inner surface of the middle frame.

[0012] According to some embodiments of the present invention, a zipper sewing and positioning device for a suitcase frame is provided between the zipper stacking block and the fixing seat, and the supporting block is used to support the inner peripheral wall of the frame.

[0013] According to some embodiments of the present invention, the luggage frame zipper sewing positioning device includes a support block comprising a first arc-shaped portion, a flat portion, and a second arc-shaped portion connected in sequence. The flat portion is used to horizontally support the middle frame. The first arc-shaped portion and the second arc-shaped portion are respectively located on both sides of the sewing machine head to support the corner positions of the middle frame.

[0014] According to some embodiments of the present invention, the luggage frame zipper sewing and positioning device has a positioning structure for positioning the first zipper and the second zipper.

[0015] According to some embodiments of the present invention, the zipper stitching positioning device for the inner frame of a suitcase includes a positioning post that passes through the zipper groove to position the sides of the first zipper and the second zipper.

[0016] According to some embodiments of the present invention, the luggage frame zipper sewing positioning device has one positioning post, and one positioning post positions the first zipper and the second zipper on the same single side.

[0017] According to some embodiments of the present invention, the zipper stitching positioning device for the middle frame of a suitcase includes an adjustment groove in which the stacked chain block communicates with the stacked chain groove. The adjustment groove extends along the width direction of the first zipper and the second zipper, and the positioning post is adjustablely installed in the adjustment groove along the extension direction of the adjustment groove.

[0018] According to some embodiments of the present invention, the zipper sewing positioning device for the middle frame of a suitcase is an elastic component, and the positioning post is interference-fitted with the wall of the adjusting groove.

[0019] The sewing machine according to this utility model includes the luggage frame zipper sewing positioning device of this utility model.

[0020] The sewing machine according to this utility model has at least the following beneficial effects: by combining the special positioning device with the sewing machine function, it realizes the assistance of manual operation in the whole process from zipper guidance, overlapping to sewing, which significantly improves production efficiency and sewing consistency, while reducing the impact of manual operation error on product quality, and meets the needs of industrial mass production for high-quality and high-efficiency sewing.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of the zipper sewing positioning device for the middle frame of a suitcase applied to a sewing machine according to an embodiment of this utility model;

[0024] Figure 2This is a schematic diagram of the structure of the zipper sewing positioning device for the middle frame of the suitcase according to an embodiment of the present invention. Figure 1 ;

[0025] Figure 3 This is a schematic diagram of the structure of the zipper sewing positioning device for the middle frame of the suitcase according to an embodiment of the present invention. Figure 2 ;

[0026] Figure 4 This is a schematic diagram of the structure of a luggage frame zipper sewing positioning device according to another embodiment of the present invention.

[0027] Explanation of icon numbers:

[0028] Fixed seat 100; sewing channel 101; support block 110; first arc-shaped part 111; flat part 112; second arc-shaped part 113;

[0029] Guide assembly 200; first guide block 210; first channel groove 2101; second guide block 220; second channel groove 2201; connecting post 221;

[0030] Stacking chain block 300; stacking chain groove 301; adjusting groove 302; positioning post 310;

[0031] Mid-frame 400;

[0032] First zipper 510; Second zipper 520;

[0033] Sewing machine head 600. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0037] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0038] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] In the luggage manufacturing industry, the stitching of the frame and zipper is a crucial process affecting the overall quality and user experience of the product. With the continuous expansion of luggage functionality requirements, the application of double-layer zippers is becoming increasingly widespread, and their stitching process has become an important part of the manufacturing process. From an explosion-proof and reinforcement perspective, the double-layer fabric design significantly enhances the zipper's resistance to damage. The outer layer of fabric can resist scratches from sharp objects or damage from forced opening, while the inner layer, through double-layer zipper teeth, improves the closure strength. Even if the outer layer is damaged, the inner layer can still maintain a complete closure, effectively preventing accidental opening of luggage and providing more reliable security for the items inside. In terms of functional expansion, some designs using double-layer zippers can achieve capacity adjustment. For example, the outer zipper controls the main compartment capacity, while the inner zipper can expand additional space, such as expanding to a 22-inch capacity. This double-layer structure allows for flexible adjustment of the luggage's spatial layout to meet the diverse needs of different users.

[0040] In traditional manufacturing processes, the stitching of the frame and zipper relies primarily on manual labor. Operators must manually align the two zipper layers with the frame before sewing them together using a sewing machine. However, because the two zipper layers need to be precisely overlapped, achieving accurate alignment between them and the frame is extremely difficult. This easily leads to misalignment of the zipper and frame, or misalignment of the overlapping layers. This not only results in cosmetic defects in the finished product but can also affect the zipper's explosion-proof reinforcement and functional expansion capabilities. For example, if the outer zipper is damaged, the inner zipper may not function properly, and the capacity adjustment function may be limited.

[0041] Therefore, such as Figures 1 to 4 As shown, this utility model presents a luggage frame zipper sewing and positioning device, including a fixing base 100 into which the frame 400 can be fitted, a guide component 200 disposed on the fixing base 100, and a stacked chain block 300 disposed on the fixing base 100 and having a sewing channel 101 between it and the fixing base 100. The guide component 200 includes a first guide block 210 and a second guide block 220 arranged in a staggered manner. The first guide block 210 has a vertically extending first channel groove 2101 through it for the first zipper 510 to pass through, and the second guide block 220 has a vertically extending second channel groove 2201 through it for the second zipper 520 to pass through. For example, see reference... Figures 1 to 3 The second guide block 220 is fixedly connected to the base of the sewing machine head 600, or, refer to... Figure 4The second guide block 220 is fixedly connected to the first guide block 210 via a connecting post 221. Further, the overlapping chain block 300 is located on the output side of the first channel groove 2101 and the second channel groove 2201. The overlapping chain block 300 is provided with a laterally extending overlapping chain groove 301 to allow the first zipper 510 and the second zipper 520 to overlap and pass through. In application, when the middle frame 400 moves in the sewing channel 101, the overlapped first zipper 510 and second zipper 520 can cooperate with the sewing machine head 600 to sew onto the middle frame 400, and move together with the middle frame 400 when it moves. It should be noted that the fixed seat 100 provides basic support for the inserted middle frame 400. In conjunction with the staggered arrangement of the first guide block 210 and the second guide block 220, the first zipper 510 and the second zipper 520 are precisely guided to move independently vertically using their vertically extending first channel groove 2101 and second channel groove 2201, respectively, avoiding mutual interference in the initial state of the two zippers. Furthermore, the horizontally extending overlapping groove 301 of the overlapping chain block 300 guides the first zipper 510 and the second zipper 520 to the same plane and reliably overlaps, ensuring the alignment accuracy of the two zippers. In addition, the sewing channel 101 formed between the overlapping chain block 300 and the middle frame 400 not only guides the movement of the middle frame 400, improving the stability of the middle frame 400's movement, but also allows for efficient completion of the sewing process in conjunction with the sewing machine head 600. This effectively solves the problems of difficult alignment between the zipper and the middle frame 400 and easy sewing deviation in traditional manual operation, significantly improving sewing accuracy, consistency, and production efficiency.

[0042] Refer to Figures 1 to 3In some embodiments of this utility model, the fixing seat 100 is cylindrical. When the middle frame 400 is inserted and moved, the circumferential surface of the fixing seat 100 can abut against the inner surface of the middle frame 400, making it easy to insert into the fixing seat 100. Furthermore, compared to the square fixing seat 100 with corners, the cylindrical fixing seat 100 has a smooth outer circumferential surface, reducing scratches and collision damage to the surface of the middle frame 400. Further, a support block 110 is provided between the chain block 300 and the fixing seat 100, and the support block 110 is used to support the inner circumferential wall of the middle frame 400. Understandably, the support block 110 fills the support gap between the inner peripheral wall of the middle frame 400 and the fixed seat 100, dispersing the traction force of the sewing machine head 600 and its own weight when the middle frame 400 moves, thus preventing deformation or displacement of the middle frame 400 due to uneven local stress. By directly supporting the inner peripheral wall of the middle frame 400, it further enhances the stability of the middle frame 400 within the sewing channel 101, providing a more reliable carrier support for the precise sewing of overlapping zippers. Specifically, the support block 110 includes a first arc-shaped portion 111, a flat portion 112, and a second arc-shaped portion 113 connected in sequence. The flat portion 112 is used to be fixedly connected to the fixed seat 100 and can horizontally support the middle frame 400. The first arc-shaped portion 111 and the second arc-shaped portion 113 are located on both sides of the sewing machine head 600 to support the corner positions of the middle frame 400. To address this, the flat portion 112 ensures stable support for the main areas of the middle frame 400. Simultaneously, when the middle frame 400 moves to a corner position during sewing, it continues sewing while rotating. At this time, the curved portion supports the corner position of the middle frame 400, ensuring that the middle frame 400 is supported by the support block 110 during the entire perimeter sewing process. This effectively reduces displacement deviation caused by corner changes during the movement of the middle frame 400, improves the accuracy of zipper sewing, and thus ensures the integrity of the zipper's function after sewing.

[0043] In some embodiments of this utility model, the zipper block 300 is provided with a positioning structure to position the first zipper 510 and the second zipper 520. This solves the problem of possible misalignment of the double zippers after overlapping due to traction force or movement of the middle frame 400 during sewing, ensuring that the first zipper 510 and the second zipper 520 remain tightly fitted and aligned during sewing. This avoids problems such as slanted stitching and poor zipper tooth engagement caused by zipper misalignment, significantly improving the reliability of the sewing quality. Specifically, refer to... Figure 2 and Figure 3The positioning structure includes a positioning post 310, which passes through the chain groove 301 to position the sides of the first zipper 510 and the second zipper 520. It should be noted that the contact positioning method of the positioning post 310 directly constrains the degree of freedom of movement of the zipper sides. Based on the lateral guidance of the chain groove 301, it strengthens the fixing effect on the zipper's overlapping state, ensuring that the double-layer zippers maintain a precise overlapping position throughout the sewing process. Furthermore, there is only one positioning post 310, which positions the first zipper 510 and the second zipper 520 on the same single side. This simplifies the design by reducing the number of positioning posts 310 while maintaining the positioning function, thus reducing the complexity of the device structure. Precise positioning on one side effectively controls the main offset direction during zipper overlapping, improving positioning efficiency while avoiding the problem of local compression deformation of the zipper that may be caused by multiple positioning posts 310, thus balancing positioning reliability and ease of operation. Furthermore, the single-sided positioning design allows for free space on the other side of the first zipper 510 and the second zipper 520, making it easier for manual insertion of the first zipper 510 and the second zipper 520 into the chain groove 301. Also, since there is no interference from the positioning post 310 on the other side, it is also beneficial for the horizontal feeding of the middle frame 400. For example, the positioning post 310 is set on the side away from the feeding of the middle frame 400 to abut and position the first zipper 510 and the second zipper 520.

[0044] Refer to Figure 2 and Figure 3 In some embodiments of this utility model, the stacking chain block 300 is provided with an adjustment groove 302 communicating with the stacking chain groove 301. The adjustment groove 302 extends along the width direction of the first zipper 510 and the second zipper 520. The positioning post 310 is adjustablely installed in the adjustment groove 302 along the extension direction of the adjustment groove 302, which can match the side positioning requirements of zippers of different widths. This solves the problem that traditional fixed positioning devices cannot adapt to zippers of multiple specifications, significantly improving the versatility and applicability of the device, while maintaining the controllability of positioning accuracy. Optionally, the positioning post 310 is an elastic component, and the positioning post 310 is interference-fitted with the groove wall of the adjustment groove 302. It is easy to understand that the elastic material positioning post 310, in the interference fit state, can achieve a stable installation with the adjustment groove 302 through slight elastic deformation to prevent accidental slippage, and can also achieve smooth position adjustment through external force compression during adjustment. In addition, the elastic component provides moderate cushioning when it comes into contact with the sides of the first zipper 510 and the second zipper 520, preventing wear or indentation of the zipper fabric caused by rigid positioning, thus balancing positioning stability and zipper protection requirements.

[0045] A sewing machine according to an embodiment of the present invention includes a luggage frame zipper sewing positioning device according to an embodiment of the present invention.

[0046] According to the sewing machine of this utility model embodiment, by combining a dedicated positioning device with the sewing machine function, the entire process from zipper guidance, overlapping to sewing is assisted by manual operation, which significantly improves production efficiency and sewing consistency, while reducing the impact of human operation errors on product quality, and meets the demand of industrial mass production for high-quality and high-efficiency sewing.

[0047] Other components and operations of the sewing machine according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0048] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A zipper sewing and positioning device for the inner frame of a suitcase, characterized in that, include: The mounting bracket allows the middle frame to be fitted into it; A guide assembly is disposed on the fixed base. The guide assembly includes a first guide block and a second guide block arranged in a staggered manner. The first guide block is provided with a vertically extending first channel groove for the passage of a first zipper, and the second guide block is provided with a vertically extending second channel groove for the passage of a second zipper. A zipper block is disposed on the fixed base and a sewing channel is provided between the fixed base and the fixed base. The zipper block is located on the output side of the first channel groove and the second channel groove. The zipper block is provided with a transversely extending zipper groove so that the first zipper and the second zipper can overlap and pass through. When the middle frame moves in the sewing channel, the overlapped first zipper and second zipper can be sewn to the middle frame with the sewing machine head.

2. The luggage frame zipper sewing positioning device according to claim 1, characterized in that: The fixing seat is cylindrical, and when the middle frame is inserted and moved, the circumferential surface of the fixing seat can abut against the inner surface of the middle frame.

3. The luggage frame zipper sewing positioning device according to claim 1, characterized in that: A support block is provided between the stacked chain block and the fixed seat, and the support block is used to support the inner peripheral wall of the middle frame.

4. The luggage frame zipper sewing positioning device according to claim 3, characterized in that: The support block includes a first arc-shaped part, a flat part, and a second arc-shaped part connected in sequence. The flat part is used to horizontally support the middle frame. The first arc-shaped part and the second arc-shaped part are located on both sides of the sewing machine head to support the corner positions of the middle frame.

5. The luggage frame zipper sewing positioning device according to claim 1, characterized in that: The stacked chain block is provided with a positioning structure to position the first zipper and the second zipper.

6. The luggage frame zipper sewing positioning device according to claim 5, characterized in that: The positioning structure includes a positioning post that passes through the chain groove to position the sides of the first zipper and the second zipper.

7. The luggage frame zipper sewing positioning device according to claim 6, characterized in that: There is one positioning post, and one positioning post positions the same single side of the first zipper and the second zipper.

8. The luggage frame zipper sewing positioning device according to claim 6 or 7, characterized in that: The stacked chain block is provided with an adjustment groove communicating with the stacked chain groove. The adjustment groove extends along the width direction of the first zipper and the second zipper. The positioning post is adjustablely installed in the adjustment groove along the extension direction of the adjustment groove.

9. The luggage frame zipper sewing positioning device according to claim 8, characterized in that: The positioning post is an elastic component, and the positioning post is interference-fitted with the wall of the adjustment groove.

10. A sewing machine, characterized in that: Includes the luggage frame zipper sewing positioning device as described in any one of claims 1 to 9.

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