Thin mattress longitudinal edge seaming device

Abstract

The utility model discloses a kind of longitudinal edge stitching devices of thin quilt, including intermediate rack, first cloth opening roller, longitudinal edge stitching unit, first driving mechanism, intermediate clamping unit, first cloth opening roller is movably connected with intermediate rack, longitudinal edge stitching unit is installed on intermediate rack and located downstream of first cloth opening roller, first driving mechanism is connected with longitudinal edge stitching unit and intermediate clamping unit, intermediate clamping unit is installed on intermediate rack and located downstream of longitudinal edge stitching unit, still include the first cloth storage unit of cloth automatic storage, first cloth storage unit is connected with intermediate rack, first cloth storage unit is located upstream of first cloth opening roller. The stitching device of the utility model can form continuous production, to improve production efficiency.

Description

Technical Field

[0001] This utility model relates to quilt production equipment, specifically to a longitudinal edge sewing device for a thin quilt. Background Technology

[0002] In daily life, quilts are a common household item. Thin quilts (such as air conditioning quilts) are one of the many types of quilts. Thin quilts are mainly made of one layer of cotton and two layers of fabric sewn together on all four sides.

[0003] In the early days, thin quilts were mostly processed manually by operating specific equipment in separate steps. This method not only required a large number of workers, resulting in high labor costs, but also had low overall production efficiency.

[0004] With the advancement of technology, mechanical equipment has been adopted to produce thin quilts. The specific production process is as follows: the first sewing equipment is used to fix the fabric and cotton material. That is, the upper fabric, cotton material and the lower fabric are transported to the first sewing equipment. The first sewing equipment sews the middle part of the upper fabric, cotton material and the lower fabric, that is, quilting, so that the three layers of raw materials are fixed and form a semi-finished product. The semi-finished product is sewn by the horizontal sewing mechanism and the vertical sewing mechanism respectively and then cut to obtain the finished thin quilt.

[0005] Since the longitudinal stitching of multiple layers of raw materials is followed by a cutting process, cutting the thin blanket takes time. If the longitudinal stitching continues, the stitched raw materials are continuously fed to the cutting equipment. However, when the blanket is finally cut and formed, the clamping unit in the cutting device needs to pause the clamping of the raw materials. The current equipment requires the transverse and longitudinal stitching mechanisms to also pause their work along with the cutting device. This results in the transverse and longitudinal stitching mechanisms not being able to work continuously. Although each interruption is short, it still reduces production efficiency. Summary of the Invention

[0006] This invention provides a longitudinal edge sewing device for thin quilts. The sewing device of this invention can form continuous production, thereby improving production efficiency.

[0007] The technical solutions to the above problems are as follows:

[0008] The quilt longitudinal edge sewing device includes an intermediate frame, a first fabric opening roller, a longitudinal edge sewing unit, a first drive mechanism, and an intermediate clamping unit. The first fabric opening roller is movably connected to the intermediate frame. The longitudinal edge sewing unit is installed on the intermediate frame and located downstream of the first fabric opening roller. The first drive mechanism is connected to the longitudinal edge sewing unit and the intermediate clamping unit. The intermediate clamping unit is installed on the intermediate frame and located downstream of the longitudinal edge sewing unit. The device also includes a first fabric storage unit for automatically storing the fabric. The first fabric storage unit is connected to the intermediate frame and located upstream of the first fabric opening roller.

[0009] Because the transverse edge sewing device of the thin blanket has a first clamping speed, while the longitudinal edge sewing device of the thin blanket in this invention has a second clamping speed, initially, under the control of the PLC controller, the first clamping speed is greater than the second clamping speed, resulting in more raw material remaining on the feed side of the longitudinal sewing device. Since the raw material cradles the first intermediate roller, under the gravity of the first intermediate roller, the first intermediate roller, carrying the first slide block, descends along the first guide rod, thus storing the excess raw material. When the first photoelectric sensor detects the first intermediate roller, it indicates that the set storage limit has been reached. The first photoelectric sensor feeds back the detected signal to the PLC controller, thereby... The PLC controller controls the first clamping speed to be lower than the second clamping speed. As the raw material is continuously fed into the longitudinal sewing device, the amount of raw material stored in the first fabric storage unit decreases. The forces exerted on the raw material by the upper and lower intermediate clamping rollers, and the tension exerted by the raw material on the first intermediate roller, cause the first intermediate roller, carrying the first slide block, to move upward along the first guide rod. When the first photoelectric sensor detects the first intermediate roller, it indicates that the first clamping speed is no longer sufficient to meet the requirements of the second clamping speed. The PLC controller then controls the first clamping speed to be higher than the second clamping speed. Through this process, the position of the first intermediate roller switches between the first and second photoelectric sensors. Because this invention has a fabric storage function, longitudinal sewing can be performed continuously. Attached Figure Description

[0010] Figure 1 A three-dimensional structural diagram of the longitudinal edge sewing device for a thin quilt in the first direction.

[0011] Figure 2 This is a three-dimensional structural diagram of the longitudinal edge sewing device for a thin quilt in the second direction.

[0012] Figure 3 A schematic diagram showing the part hidden by the longitudinal edge stitching device of the thin quilt.

[0013] Figure 4 This is a structural diagram of the intermediate conveying unit.

[0014] Figure 5 for Figure 3Enlarged view of part P in the image.

[0015] Figure 6 for Figure 3 Enlarged view of the Q part in the image.

[0016] Labels in the attached diagram:

[0017] Intermediate frame 1, first opening roller 2, intermediate first support 3, guide rail 3a, mounting plate 4, first lifting drive component 5, mounting frame 6, wheel-shaped pressing mold 7, ultrasonic welding assembly 8, motor 9, first transmission assembly 10, second transmission assembly 11, rotating shaft 12, third transmission assembly 13, intermediate second support 14, intermediate slider 15, second lifting drive component 16, intermediate upper pinch roller 17, intermediate lower pinch roller 18, first lower support 19, first upper support 20, first cloth guiding roller 21, first guide rod 22, first slide block 23, first intermediate Roller 23a, second feed roller 24, first lower connecting shaft 25, first upper connecting shaft 26, first sprocket and chain drive mechanism 27, first support rod 27a, first photoelectric sensor 27b, second photoelectric sensor 27c, second lower support 28, second upper support 29, third feed roller 30, fourth feed roller 31, second guide rod 32, second slide block 33, second intermediate roller 34, fifth feed roller 34a, sixth feed roller 34b, third intermediate roller 35, second lower connecting shaft 36, second upper connecting shaft 37, second sprocket and chain drive mechanism 38. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, 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.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing" and other such terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components, unless otherwise explicitly limited.

[0022] like Figures 1 to 6 The longitudinal edge sewing device for thin quilts of this utility model includes an intermediate frame 1, a first fabric opening roller 2, a longitudinal edge sewing unit, a first drive mechanism, an intermediate clamping unit, and a first fabric storage unit. The following is a detailed description of each part and the relationship between them.

[0023] The first opening roller 2 is movably connected to the intermediate frame 1. The longitudinal edge sewing unit is installed on the intermediate frame 1 and located downstream of the first opening roller 2. The longitudinal edge sewing unit includes a central first support 3, a mounting plate 4, a first lifting drive component 5, a mounting frame 6, a wheel-shaped pressing mold 7, and an ultrasonic welding assembly 8. The central first support 3 is fixed to the intermediate frame 1, and the mounting plate 4 is connected to the central first support 3. A guide rail 3a is provided on the central first support 3, and a slider is fixed on the mounting plate 4. The slider on the mounting plate 4 slides in cooperation with the guide rail 3a on the central first support 3. The mounting plate 4 has multiple threaded holes, and locking screws are threadedly connected to the threaded holes. The locking screws are tightened against the central first support 3 to fix the mounting plate 4 to the central first support 3. Loosening the locking screws and applying a pushing force to the mounting plate 4 causes the mounting plate 4 to slide along the guide rail 3a, thereby adjusting the position of the longitudinal edge sewing unit. After adjusting to the required position, the locking screws are tightened to fix the mounting plate 4 to the central first support 3. The first lifting drive component 5 is connected to the mounting plate 4. The first lifting drive component 5 is a linear drive component, and the linear drive component preferably uses a cylinder. The mounting frame 6 is connected to the first lifting drive component 5. The wheel-shaped mold 7 is movably connected to the mounting frame 6. The wheel-shaped mold 7 consists of a pressure roller and a shaft. The circumferential surface of the pressure roller is provided with patterns or teeth. The shaft is fixed to the pressure roller and rotates with the mounting frame 6. The first drive mechanism of the wheel-shaped mold 7 is connected to the mounting frame 6. The ultrasonic welding assembly 8 is connected to the intermediate frame 1. The ultrasonic welding assembly 8 cooperates with the wheel-shaped mold 7 to weld the longitudinal edge of the raw material.

[0024] The first drive mechanism is connected to the longitudinal edge sewing unit and the intermediate clamping unit. The first drive mechanism includes a motor 9, a first transmission assembly 10, a second transmission assembly 11, a rotating shaft 12, and a third transmission assembly 13. The output end of the motor 9 is connected to the first transmission assembly 10. The first transmission assembly 10 is connected to both the intermediate clamping unit and the second transmission assembly 11. The first transmission assembly 10 is preferably composed of a sprocket and chain drive mechanism and a gear drive mechanism. The sprocket and chain drive mechanism includes a driving sprocket, a chain, and a driven sprocket. The driving sprocket is fixed to the motor 9, and the chain is connected to both the driving sprocket and the driven sprocket. The sprocket connection is such that the driven sprocket is fixed to the intermediate lower pinch roller 18 in the intermediate pinch unit. The gear transmission mechanism includes a driving gear, a driven gear, and a first rotating shaft. The driving gear is fixed to the intermediate lower pinch roller 18, the driving gear meshes with the driven gear, the driven gear is fixed to the first rotating shaft, the first rotating shaft is rotatably connected to the intermediate frame 1, the first rotating shaft is connected to the second transmission assembly 11, the second transmission assembly 11 is connected to the rotating shaft 12, the rotating shaft 12 is connected to the third transmission assembly 13, the third transmission assembly 13 is connected to the longitudinal edge sewing unit, and the third transmission assembly 13 is connected to the wheel-shaped pressing mold 7.

[0025] The third transmission component 13 can be a sprocket and chain drive mechanism or a gear drive mechanism. The sprocket or gear on the rotating shaft 12 is provided with a radial threaded hole. After the set screw is threaded into the threaded hole, it abuts against the rotating shaft 12 to fix the rotating shaft 12 to the sprocket or gear. Before adjusting the position of the longitudinal edge sewing unit, the locking screw and the set screw are loosened, and a thrust is applied to the longitudinal edge sewing unit and the second transmission component 11. When the longitudinal edge sewing unit and the second transmission component 11 are moved to the required position, the locking screw and the set screw are tightened to fix the mounting plate 4 to the first bracket 3 and to fix the rotating shaft 12 to the sprocket or gear.

[0026] The intermediate clamping unit is installed on the intermediate frame 1 and located downstream of the longitudinal edge sewing unit. The intermediate clamping unit includes an intermediate second support 14, an intermediate slider 15, a second lifting drive component 16, an intermediate upper clamping roller 17, and an intermediate lower clamping roller 18. The intermediate second support 14 is fixed to the intermediate frame 1, and the intermediate slider 15 is slidably engaged with the intermediate second support 14. The second lifting drive component 16 is connected to the intermediate slider 15 and is a linear drive component, preferably a cylinder. The intermediate upper clamping roller 17 is movably connected to the intermediate slider 15, and the intermediate lower clamping roller 18 is movably connected to the intermediate second support 14. The second lifting drive component 16 drives the intermediate slider 15 to rise and fall on the intermediate second support 14, and the intermediate slider 15 drives the intermediate upper clamping roller 17 to rise and fall, thereby adjusting the distance between the intermediate upper clamping roller 17 and the intermediate lower clamping roller 18.

[0027] The first fabric storage unit automatically stores the fabric. It is connected to the intermediate frame 1 and located upstream of the first fabric opening roller 2. The first fabric storage unit includes a first lower support 19, a first upper support 20, a first fabric passing roller 21, a first guide rod 22, a first slide block 23, a first intermediate roller 23a, and a second fabric passing roller 24. The first lower support 19 and the first upper support 20 are fixed to the intermediate frame 1. The first fabric passing roller 21 is connected to the first lower support 19. One end of the first guide rod 22 is fixed to the first lower support 19, and the other end passes through the first slide block 23 and is fixed to the first upper support 20. The first slide block 23 and the first guide rod 22 are in sliding engagement. The first intermediate roller 23a is connected to the first slide block 23, and the second fabric passing roller 24 is connected to the first slide block 23.

[0028] The first fabric storage unit also includes a first transmission unit for synchronous lifting and lowering of both ends of the first intermediate roller 23a. The first transmission unit includes a first lower connecting shaft 25, a first upper connecting shaft 26, and a first sprocket and chain transmission mechanism 27. The first lower connecting shaft 25 is connected to the first lower support 19. The first lower connecting shaft 25 is preferably connected to the first lower support 19 through a bearing. The first lower connecting shaft 25 can rotate relative to the first lower support 19. The first upper connecting shaft 26 is connected to the first upper support 20. The first upper connecting shaft 26 is preferably connected to the first upper support 20 through a bearing. The first upper connecting shaft 26 can rotate relative to the first upper support 20. The first sprocket and chain transmission mechanism 27 is connected to the first lower connecting shaft 25 and the first upper connecting shaft 26 respectively. The first sprocket and chain transmission mechanism 27 is also connected to the first slide 23. That is, the two sprockets in the first sprocket and chain transmission mechanism 27 are fixedly connected to the first lower connecting shaft 25 and the first upper connecting shaft 26 respectively. The chain of the first sprocket and chain transmission mechanism 27 is connected to the first slide 23. Alternatively, a belt drive mechanism can be used to replace the first sprocket and chain drive mechanism 27 to achieve the same effect.

[0029] The first fabric storage unit also includes a first fabric storage detection component. The first fabric storage detection component includes a first support rod 27a, a first photoelectric sensor 27b and a second photoelectric sensor 27c for detecting the first slide block 23 or the first intermediate roller 23a. The two ends of the first support rod 27a are respectively fixed to the first lower support 19 and the first upper support 20. The first photoelectric sensor 27b and the second photoelectric sensor 27c are installed alternately on the first support rod 27a.

[0030] This utility model also includes a second fabric storage unit for automatic fabric storage. The second fabric storage unit is connected to the intermediate frame 1 and is located downstream of the intermediate clamping unit. The second fabric storage unit includes a second lower support 28, a second upper support 29, a third fabric guide roller 30, a fourth fabric guide roller 31, a second guide rod 32, a second slide block 33, a second intermediate roller 34, a fifth fabric guide roller 34a, a sixth fabric guide roller 34b, and a third intermediate roller 35. The second lower support 28 and the second upper support 29 are respectively fixed to the intermediate frame 1. The third fabric guide roller 30, the fourth fabric guide roller 31, the fifth fabric guide roller 34a, and the sixth fabric guide roller 34b are respectively connected to the intermediate frame 1. One end of the second guide rod 32 is connected to the second lower support 28, and the other end of the second guide rod 32 passes through the second slide block 33 and is connected to the second upper support 29. The second slide block 33 and the second guide rod 32 are in sliding engagement. The second intermediate roller 34 and the third intermediate roller 35 are respectively connected to the second slide block 33.

[0031] The second fabric storage unit also includes a second transmission unit for synchronously raising and lowering the second intermediate roller 34 and the third intermediate roller 35. The second transmission unit includes a second lower connecting shaft 36, a second upper connecting shaft 37, and a second sprocket and chain transmission mechanism 38. The second lower connecting shaft 36 and the second upper connecting shaft 37 are respectively connected to the intermediate frame 1. The second sprocket and chain transmission mechanism 38 is connected to both the second lower connecting shaft 36 and the second upper connecting shaft 37, and is also connected to the second slide block 33. The second lower connecting shaft 36 is fixed to the intermediate frame 1, and the second upper connecting shaft 37 is connected to the intermediate frame 1 via a bearing assembly. One sprocket in the second sprocket and chain transmission mechanism 38 is rotatably engaged with the second lower connecting shaft 36, while the other sprocket in the second sprocket and chain transmission mechanism 38 is fixed to the second upper connecting shaft 37. Alternatively, a belt drive mechanism can be used to replace the second sprocket and chain transmission mechanism 38 to achieve the same effect.

[0032] The second fabric storage unit also includes a second fabric storage detection component for detecting the second slide block 33. The second fabric storage detection component is connected to the intermediate frame 1. The remaining structure of the second fabric storage detection component is basically the same as that of the first fabric storage detection component, and will not be described in detail here.

[0033] The working process of this utility model is as follows: After being sewn by the transverse edge sewing device (the transverse edge sewing device of the thin quilt is located upstream of the longitudinal edge sewing device of the thin quilt, and the transverse edge sewing device of the thin quilt is not shown in this application), the raw material passes through the first pass-through roller 21, the second pass-through roller 24, the first intermediate roller 23a, and the first opening roller 2 in sequence. When the raw material passes through the wheel-shaped pressing mold 7 and the ultrasonic welding assembly 8, the raw material is pressed between the wheel-shaped pressing mold 7 and the ultrasonic welding assembly 8. Thus, under the action of the wheel-shaped pressing mold 7 and the ultrasonic welding assembly, the raw material is sewn. The sewn raw material then passes through the middle upper clamping roller 17 and the middle lower clamping roller 18 in sequence. Then, the raw material passes through the third pass-through roller 30, the fourth pass-through roller 31, the second intermediate roller 34, the fifth pass-through roller 34a, the third intermediate roller 35, and the sixth pass-through roller 34b in sequence, and is finally output from the sixth pass-through roller 34b. During this process, the raw material is respectively caught by the first intermediate roller 23a, the second intermediate roller 34, and the third intermediate roller 35.

[0034] The transverse edge sewing device for the thin quilt has a first clamping speed, while the longitudinal edge sewing device for the thin quilt in this invention has a second clamping speed. Initially, under the control of the PLC controller (the PLC controller is a known electrical control unit, not shown in the figure), the first clamping speed is greater than the second clamping speed, resulting in more raw material remaining on the feed side of the longitudinal sewing device. Since the raw material cradles the first intermediate roller 23a, under the gravity of the first intermediate roller 23a, the first intermediate roller 23a carries the first slide block 23 down along the first guide rod 22, thereby storing the excess raw material. When the second photoelectric sensor 27c detects the first intermediate roller 23a, it indicates that the set storage limit has been reached, and the second photoelectric sensor 27c feeds back the detected signal to the PLC controller. The PLC controller controls the first clamping speed to be less than the second clamping speed. As the raw material is continuously conveyed in the longitudinal sewing device, the raw material stored in the first fabric storage unit decreases. The force exerted on the raw material by the intermediate upper clamping roller 17 and the intermediate lower clamping roller 18, and the tension exerted by the raw material on the first intermediate roller 23a, cause the first intermediate roller 23a to move upward along the first guide rod 22 with the first slide block 23. When the first photoelectric sensor 27b detects the first intermediate roller 23a, it indicates that the first clamping speed of the feed can no longer meet the requirements of the second clamping speed. The PLC controller then controls the first clamping speed to be greater than the second clamping speed. Through the above process, the position of the first intermediate roller 23a is switched between the first photoelectric sensor 27b and the second photoelectric sensor 27c.

[0035] Since a cutting device for the thin quilt (not shown in the figure) is provided downstream of the longitudinal edge sewing device for the thin quilt, and the cutting device for the thin quilt has a raw material feeding unit for the thin quilt, the raw material feeding unit will temporarily convey the thin quilt when the cutting device for the thin quilt cuts it. Therefore, for the raw material output from the longitudinal sewing device, the raw material is stored by the same principle as described above because the raw material holds the second intermediate roller 34 and the third intermediate roller 35.

Claims

1. A device for sewing the longitudinal edges of a thin quilt, comprising an intermediate frame (1), a first opening roller (2), a longitudinal edge sewing unit, a first drive mechanism, and an intermediate feeding unit, wherein the first opening roller (2) is movably connected to the intermediate frame (1), the longitudinal edge sewing unit is mounted on the intermediate frame (1) and located downstream of the first opening roller (2), the first drive mechanism is connected to the longitudinal edge sewing unit and the intermediate feeding unit, and the intermediate feeding unit is mounted on the intermediate frame (1) and located downstream of the longitudinal edge sewing unit, characterized in that, It also includes a first fabric storage unit for automatic storage of fabric, which is connected to the intermediate frame (1) and is located upstream of the first fabric opening roller (2).

2. The longitudinal edge sewing device for a thin quilt according to claim 1, characterized in that, The longitudinal edge stitching unit includes a central first support (3), a mounting plate (4), a first lifting drive component (5), a mounting frame (6), a wheel-shaped pressing mold (7), and an ultrasonic welding assembly (8). The central first support (3) is fixed to the central frame (1), the mounting plate (4) is connected to the central first support (3), the first lifting drive component (5) is connected to the mounting plate (4), the mounting frame (6) is connected to the first lifting drive component (5), the wheel-shaped pressing mold (7) is movably connected to the mounting frame (6), the wheel-shaped pressing mold (7) is connected to the first drive mechanism, and the ultrasonic welding assembly (8) is connected to the central frame (1). The ultrasonic welding assembly (8) and the wheel-shaped pressing mold (7) cooperate to weld the longitudinal edge of the raw material.

3. The longitudinal edge sewing device for a thin quilt according to claim 1, characterized in that, The first drive mechanism includes a motor (9), a first transmission assembly (10), a second transmission assembly (11), a rotating shaft (12), and a third transmission assembly (13). The output end of the motor (9) is connected to the first transmission assembly (10). The first transmission assembly (10) is connected to the intermediate clamping unit and the second transmission assembly (11) respectively. The second transmission assembly (11) is connected to the rotating shaft (12). The rotating shaft (12) is connected to the third transmission assembly (13). The third transmission assembly (13) is connected to the longitudinal edge sewing unit.

4. The longitudinal edge sewing device for a thin quilt according to claim 1, characterized in that, The intermediate clamping unit includes an intermediate second support (14), an intermediate slider (15), a second lifting drive component (16), an intermediate upper clamping roller (17), and an intermediate lower clamping roller (18). The intermediate second support (14) is fixed to the intermediate frame (1), the intermediate slider (15) is slidably engaged with the intermediate second support (14), the second lifting drive component (16) is connected to the intermediate slider (15), the intermediate upper clamping roller (17) is movably connected to the intermediate slider (15), and the intermediate lower clamping roller (18) is movably connected to the intermediate second support (14).

5. The longitudinal edge sewing device for a thin quilt according to any one of claims 1 to 4, characterized in that, The first fabric storage unit includes a first lower support (19), a first upper support (20), a first fabric feed roller (21), a first guide rod (22), a first slide block (23), a first intermediate roller (23a), and a second fabric feed roller (24). The first lower support (19) and the first upper support (20) are respectively fixed to the intermediate frame (1). The first fabric feed roller (21) is connected to the first lower support (19). One end of the first guide rod (22) is fixed to the first lower support (19). The other end of the first guide rod (22) passes through the first slide block (23) and is fixed to the first upper support (20). The first slide block (23) and the first guide rod (22) are in sliding cooperation. The first intermediate roller (23a) is connected to the first slide block (23). The second fabric feed roller (24) is connected to the first slide block (23).

6. The longitudinal edge sewing device for a thin quilt according to claim 5, characterized in that, The first fabric storage unit also includes a first transmission unit for synchronous lifting and lowering of both ends of the first intermediate roller (23a). The first transmission unit includes a first lower connecting shaft (25), a first upper connecting shaft (26), and a first sprocket and chain transmission mechanism (27). The first lower connecting shaft (25) is connected to the first lower support (19), the first upper connecting shaft (26) is connected to the first upper support (20), and the first sprocket and chain transmission mechanism (27) is connected to the first lower connecting shaft (25) and the first upper connecting shaft (26) respectively. The first sprocket and chain transmission mechanism (27) is also connected to the first slide (23).

7. The longitudinal edge sewing device for a thin quilt according to claim 5, characterized in that, The first fabric storage unit also includes a first fabric storage detection component, which includes a first support rod (27a), a first photoelectric sensor (27b) and a second photoelectric sensor (27c) for detecting the first slide (23) or the first intermediate roller (23a). The two ends of the first support rod (27a) are fixed to the first lower support (19) and the first upper support (20) respectively. The first photoelectric sensor (27b) and the second photoelectric sensor (27c) are installed on the first support rod (27a) at intervals.

8. The longitudinal edge sewing device for a thin quilt according to any one of claims 1 to 4, characterized in that, It also includes a second fabric storage unit for automatic storage of fabric, which is connected to the intermediate frame (1) and is located downstream of the intermediate clamping unit.

9. The longitudinal edge sewing device for a thin quilt according to claim 8, characterized in that, The second fabric storage unit includes a second lower support (28), a second upper support (29), a third fabric roller (30), a fourth fabric roller (31), a second guide rod (32), a second slide block (33), a second intermediate roller (34), a fifth fabric roller (34a), a sixth fabric roller (34b), and a third intermediate roller (35). The second lower support (28) and the second upper support (29) are respectively fixed to the intermediate frame (1). The third fabric roller (30), the fourth fabric roller (31), the fifth fabric roller (34a), and the sixth fabric roller (34b) are respectively connected to the intermediate frame (1). One end of the second guide rod (32) is connected to the second lower support (28), and the other end of the second guide rod (32) passes through the second slide block (33) and is connected to the second upper support (29). The second slide block (33) and the second guide rod (32) are in sliding cooperation. The second intermediate roller (34) and the third intermediate roller (35) are respectively connected to the second slide block (33).

10. The longitudinal edge sewing device for a thin quilt according to claim 9, characterized in that, The second fabric storage unit also includes a second transmission unit for synchronously raising and lowering the two ends of the second intermediate roller (34) and the third intermediate roller (35). The second transmission unit includes a second lower connecting shaft (36), a second upper connecting shaft (37), and a second sprocket and chain transmission mechanism (38). The second lower connecting shaft (36) and the second upper connecting shaft (37) are respectively connected to the intermediate frame (1). The second sprocket and chain transmission mechanism (38) is respectively connected to the second lower connecting shaft (36) and the second upper connecting shaft (37). The second sprocket and chain transmission mechanism (38) is also connected to the second slide (33).

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