Width adjusting device of loop sewing machine

Abstract

A width adjusting device of a loop nailing machine mainly comprises a fixing support, a feeding mechanism, a cutter mechanism, a material pressing mechanism, a material rolling mechanism, a first adjusting frame and a second adjusting frame, and the first adjusting frame and the second adjusting frame are both connected with the fixing support in a sliding mode and are driven by a first driving piece and a second driving piece which are independent respectively to move transversely. The first material pressing assembly and the first material rolling assembly are arranged on the fixing support, the feeding mechanism, the cutter mechanism and the second material rolling assembly are arranged on the first adjusting frame, and the second material pressing assembly is arranged on the second adjusting frame, so that independent control over the width of the material pressing mechanism is achieved, adjustment of the width of the material pressing mechanism does not affect feeding, the cutter and the material rolling mechanism, and the material pressing efficiency is improved. The defect that in the prior art, width adjustment of a material pressing mechanism is linked with other mechanisms is overcome, influences caused by mutual interference are avoided, and the flexibility, accuracy and stability of the material pressing mechanism during parameter adjustment are improved.

Description

Technical Field

[0001] This utility model relates to the field of garment machinery technology, specifically to a width adjustment device for a stitching machine. Background Technology

[0002] A snap-fitting machine is an important production piece of equipment, mainly used for sewing various snaps onto clothing, leather goods, and other products, such as button snaps on garments, decorative snaps or functional snaps on leather goods. Its efficiency and stability play a crucial role in the production quality and efficiency of the products. A typical snap-fitting machine consists of several core components, including a feeding device, a sewing device, and a control system. Among these, the performance of the feeding device is critical to production efficiency and product quality. Traditional feeding devices have revealed many problems when dealing with the processing requirements of snaps of different widths.

[0003] Early examples, such as the Chinese invention patent application No. 201110395566.5 (publication number CN102493131A) which disclosed a feeding device for an automatic snap-fit ​​machine, could achieve basic functions such as feeding, cutting, rolling, and conveying the snaps to the sewing area. However, when dealing with snaps of different widths, it could only rely on manually adjusting the installation position of the feeding device. This manual adjustment method was not only time-consuming and labor-intensive, but also difficult to guarantee the adjustment accuracy, seriously affecting production efficiency. Furthermore, the processes of feeding, pulling, cutting, rolling, and conveying could only be carried out sequentially, with each link restricting the others and unable to achieve efficient collaborative work, resulting in low overall work efficiency.

[0004] In recent years, with the continuous development of technology, some improved feeding devices have gradually emerged. For example, the Chinese invention patent application No. 201410179626.3 (Publication No. CN03981644A) discloses a feeding device that sets up a fixed frame and an adjusting bracket, and enables the adjusting bracket to move linearly relative to the fixed frame, thereby adjusting the position of the first pressing component and the first winding component to adapt to belt loops of different widths. This design improves the convenience of adjustment to a certain extent and can automatically control the movement distance of the adjusting bracket, which is an improvement over manual adjustment.

[0005] However, such devices also have shortcomings: in actual production, the pressing mechanism of the feeding device is crucial for the stable fixation of the belt loops. Existing technology links the width adjustment of the pressing mechanism to the adjusting bracket. This means that when the adjusting bracket moves to accommodate belt loops of different widths, not only does the position of the pressing mechanism change, but the entire feeding mechanism, cutting mechanism, and winding mechanism connected to the adjusting bracket must also move. This holistic adjustment makes the equipment adjustment process complex, requiring high coordination between various mechanisms. If any link fails, it can affect the stability and accuracy of the entire feeding process. Moreover, because the width adjustment of the pressing mechanism is linked to other mechanisms, there are many limitations when optimizing or adjusting the pressing mechanism individually. It cannot be flexibly and precisely adjusted according to the actual pressing needs, making it difficult to meet increasingly diverse and sophisticated production requirements.

[0006] To address the aforementioned issues, this invention proposes a novel design approach. The width adjustment of the pressing mechanism is separated from the original adjustment bracket, and a separate drive mechanism is provided for individual adjustment of the pressing mechanism. This aims to improve the flexibility, accuracy, and stability of the feeding device when handling belt loops of different widths, thereby further enhancing production efficiency and product quality. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a width adjustment device for a hook-making machine that is compact in layout and can adjust the width of the pressing mechanism by setting a separate drive unit, so as to improve the flexibility, accuracy and stability of the feeding device when handling belt loops of different widths.

[0008] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the width adjustment device of the belt looper includes a fixed bracket, a feeding mechanism, a cutting mechanism, a pressing mechanism and a winding mechanism. The pressing mechanism includes a first pressing component and a second pressing component for fixing the two ends of the belt loop respectively. The winding mechanism includes a first winding component and a second winding component for clamping the two ends of the belt loop respectively. It also includes a first adjustment frame and a second adjustment frame.

[0009] Both the first adjusting frame and the second adjusting frame are slidably connected to the fixed bracket, and the first driving member and the second driving member respectively drive the first adjusting frame and the second adjusting frame to move laterally;

[0010] The first pressing assembly and the first roll assembly are both mounted on a fixed bracket, the feeding mechanism, the cutting mechanism and the second roll assembly are all mounted on a first adjusting frame, and the second pressing assembly is mounted on a second adjusting frame;

[0011] The lateral movement of the second adjusting frame is independent of the first adjusting frame, and the distance between the first pressing component and the second pressing component can be directly adjusted through the second driving component to achieve independent control of the width adjustment of the pressing mechanism.

[0012] In order to optimize the overall structure of the first driving component and ensure the positional accuracy of the belt loop during feeding, cutting and winding, the first driving component preferably includes a first driving motor, a first screw connected to the output shaft of the first driving motor, and a first slider threadedly connected to the first screw and connected to the first adjusting frame. The first driving motor drives the first screw to rotate, thereby driving the first slider and the first adjusting frame to move laterally synchronously.

[0013] To optimize the second driving component and the overall structure, ensure precise control of the lateral movement of the second adjusting frame, and provide stable and reliable power for adjusting the width of the pressing mechanism individually, thereby enabling more precise adjustment of the distance between the first pressing component and the second pressing component, preferably, the second driving component includes a second driving motor, a second screw connected to the output shaft of the second driving motor, and a second slider threaded onto the second screw and connected to the second adjusting frame. The second driving motor drives the second screw to rotate, thereby causing the second slider and the second adjusting frame to move laterally synchronously.

[0014] In order to provide stable guidance for the lateral movement of the second adjustment frame, ensure the smoothness of the second adjustment frame during movement, and reduce shaking and deviation, preferably, the fixed bracket is provided with a first mounting plate that extends laterally, the first mounting plate is provided with a guide rail that extends laterally, and the second slider is provided with a groove that matches the guide rail.

[0015] To provide better support for the end of the second screw and ensure its lateral stability during rotation, preferably, a vertically extending second mounting plate is provided on the first mounting plate, and the second mounting plate has a mounting hole through which the end of the second screw is rotatably connected.

[0016] In order to enable the first pressing assembly to move up and down more effectively and to provide appropriate clamping force for belt loops of different thicknesses, preferably, the fixed bracket is provided with a vertically extending fixed plate, the fixed plate is provided with a movable plate that can move up and down relative to the fixed plate and a cylinder that drives the movable plate to move up and down, the first pressing assembly is provided on the movable plate to realize up and down movement, and a first guide rail mechanism is provided between the fixed plate and the movable plate to facilitate the up and down movement of the movable plate.

[0017] To ensure that the second pressing component can adjust its height synchronously when the first pressing component moves up and down, so as to maintain a stable pressing state on both ends of the belt loop, preferably, the second adjusting frame is mounted on the second slider in a way that allows it to move up and down. The second adjusting frame has a laterally extending guide groove, and the movable plate is provided with a guide post that is adapted to the guide groove. A second guide rail mechanism is also provided between the second slider and the second adjusting frame to facilitate the second adjusting frame to move up and down with the movable plate.

[0018] In order to better set the second guide rail mechanism between the second slider and the second adjustment frame, preferably, the bottom of the second slider has a downwardly extending first connecting part, and the second guide rail mechanism is connected to the first connecting part.

[0019] In order to optimize the overall structure of the second adjustment frame so that the second pressing assembly can be better installed on the second adjustment frame, preferably, the second adjustment frame is further formed with a second connecting part extending towards the front end, and the second pressing assembly is installed on the second connecting part.

[0020] Compared with the prior art, the advantages of this utility model are as follows: By setting up independent first and second adjustment frames, both the first and second adjustment frames can be slidably connected to the fixed support, and each is driven laterally by an independent first and second driving component. This allows the second adjustment frame to directly adjust the distance between the first and second pressing components through the second driving component, thereby achieving independent control of the width adjustment of the pressing mechanism. This ensures that the width adjustment of the pressing mechanism will not affect the feeding mechanism, cutting mechanism, and winding mechanism, solving the drawback of the width adjustment of the pressing mechanism in the prior art, which requires linkage with other mechanisms. It avoids the adverse effects caused by mutual interference, improves the flexibility, accuracy, and stability of the pressing mechanism when adjusting parameters, and allows maintenance personnel to quickly locate and solve problems without worrying about affecting other mechanisms. Maintenance time and costs are significantly reduced, improving the practicality and service life of the equipment. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of this embodiment;

[0022] Figure 2 This is a schematic diagram of the cooperative structure of the fixed bracket, the first adjusting bracket, and the second adjusting bracket in this embodiment;

[0023] Figure 3 This is a schematic diagram of the local decomposition state structure in this embodiment;

[0024] Figure 4 This is a three-dimensional structural diagram of the second adjustment frame in this embodiment. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1-4 The diagram shows the preferred embodiment of this utility model. The width adjustment device of the belt looper in this embodiment mainly includes a fixed bracket 1, a feeding mechanism 2, a cutting mechanism 3, a pressing mechanism 4, a winding mechanism 5, a first adjusting frame 6, a second adjusting frame 7, etc., wherein the pressing mechanism 4 includes a first pressing component 4a and a second pressing component 4b for fixing the two ends of the belt loop respectively, and the winding mechanism 5 includes a first winding component 5a and a second winding component 5b for clamping the two ends of the belt loop respectively.

[0027] In practical production applications, the width adjustment device of this hook-attaching machine is installed on the main body of the machine and works in conjunction with the sewing device to complete the task of hook sewing. The specific implementation method is described in detail below.

[0028] Installation and foundation setup of fixed bracket 1: Refer to Figures 1 to 3 As shown, the fixed bracket 1 serves as the supporting foundation for the entire device and is generally made of high-strength metal. It is securely fixed to the workbench of the nailing machine with bolts. A first mounting plate 1a extends laterally from the fixed bracket 1. The first mounting plate 1a is connected to the fixed bracket 1 via welding or screws, ensuring a strong connection. A guide rail 1b is mounted laterally on the lower surface of the first mounting plate 1a. The guide rail 1b is a high-precision linear guide rail and is tightly connected to the first mounting plate 1a with bolts, ensuring its installation accuracy and providing stable guidance for the movement of subsequent components. Simultaneously, a second mounting plate 1c is vertically connected to the first mounting plate 1a. A mounting hole 1d is machined laterally through the second mounting plate 1c. The size and precision of the mounting hole 1d are precisely matched to the end of the second screw 9b, allowing the second screw 9b to rotate freely within the mounting hole 1d.

[0029] Installation and connection of the first adjusting frame 6 and its associated components: Reference Figure 2 and Figure 3As shown, the first adjusting frame 6 and the fixed bracket 1 are connected by a sliding connection to achieve lateral movement. Specifically, the first slider 8c in the first driving component 8 is firmly connected to the first adjusting frame 6 by bolts, and the internal thread of the first slider 8c is precisely engaged with the first screw 8b. The first drive motor 8a is installed at a specific position on the fixed bracket 1, and its output shaft is connected to the first screw 8b via a coupling to ensure stable power transmission. When the first drive motor 8a starts, it drives the first screw 8b to rotate, causing the first slider 8c and the first adjusting frame 6 to move laterally synchronously. The feeding mechanism 2, the cutting mechanism 3, and the second winding assembly 5b are all installed at corresponding positions on the first adjusting frame 6 to ensure that these components can move synchronously during the movement of the first adjusting frame 6, and work together to complete operations such as feeding, cutting, and winding.

[0030] Installation and connection of the second adjustment bracket 7 and its associated components: Refer to Figure 2 and Figure 4 As shown, the second adjusting frame 7 is also slidably connected to the fixed bracket 1, enabling lateral movement independent of the first adjusting frame 6. The second slider 9c in the second driving component 9 is bolted to the second adjusting frame 7. The second slider 9c has a groove 9c1 adapted to the guide rail 1b. The groove 9c1 and the guide rail 1b are in a sliding guide fit, ensuring smooth sliding of the second adjusting frame 7 while maintaining a certain level of accuracy and stability. The second drive motor 9a is installed in a suitable position, and its output shaft is connected to the second screw 9b via a coupling. The second screw 9b passes through the mounting hole 1d of the second mounting plate 1c. When the second drive motor 9a operates, it drives the second screw 9b to rotate, causing the second slider 9c and the second adjusting frame 7 to move laterally. The second adjusting frame 7 has a laterally extending guide groove 7a. The guide post 1f1 protruding from the movable plate 1f is embedded in the guide groove 7a, and the two are in a clearance fit, enabling vertical linkage between the movable plate 1f and the second adjusting frame 7. Meanwhile, at the bottom of the second slider 9c, a first connecting part 9c2 extends downward to form a second guide rail mechanism 7b, which is mounted on the first connecting part 9c2. The second adjusting frame 7 is connected to the second slider 9c via the second guide rail mechanism 7b, facilitating the second adjusting frame 7 to move up and down with the movable plate 1f. On the second adjusting frame 7, a second connecting part 7c extends towards the front end, and a second pressing assembly 4b is mounted on the second connecting part 7c, ensuring that the second pressing assembly 4b can move accurately with the second adjusting frame 7.

[0031] Installation and connection of the pressing mechanism 4 and related components: Refer to Figure 2 and Figure 3As shown, a cylinder 1g and a first guide rail mechanism 1e1 are installed on the vertical fixed plate 1e of the fixed bracket 1. The first guide rail mechanism 1e1 consists of a guide rail and a slider. The guide rail is installed on the fixed plate 1e, and the slider is connected to the movable plate 1f. The movable plate 1f is connected to the fixed plate 1e through the first guide rail mechanism 1e1 to realize the vertical lifting function. The piston rod of the cylinder 1g is connected to the movable plate 1f. When the cylinder 1g works, it pushes the movable plate 1f to move up and down along the first guide rail mechanism 1e1. The first pressing assembly 4a is installed on the movable plate 1f and can move up and down with the movable plate 1f to realize the pressing and releasing operation of the belt loop in the vertical direction.

[0032] Installation of coil mechanism 5: Refer to Figure 1 As shown, the first roll assembly 5a is directly installed in a suitable position on the fixed bracket 1 and can be fixed by bolts. The second roll assembly 5b is installed on the first adjusting frame 6 and works in conjunction with the first roll assembly 5a. During the feeding and sewing process, it clamps and winds both ends of the belt loop to ensure stable conveying and processing of the belt loop. The linkage method of the feeding mechanism 2, the cutting mechanism 3 and the roll mechanism 5 is existing technology and will not be elaborated here.

[0033] Here, it needs further explanation: In actual operation, when the width of the pressing mechanism 4 needs to be adjusted to accommodate belt loops of different widths, the second drive motor 9a is activated. The second drive motor 9a drives the second screw 9b to rotate, causing the second slider 9c and the second adjusting frame 7 to move laterally. This precisely adjusts the distance between the first pressing component 4a and the second pressing component 4b, thereby achieving independent control of the width adjustment of the pressing mechanism 4. This ensures that the width adjustment of the pressing mechanism 4 does not affect the feeding mechanism 2, the cutting mechanism 3, or the winding mechanism. This solves the drawback of the existing technology where the width adjustment of the pressing mechanism is linked with other mechanisms, avoiding the impact of mutual interference. It improves the flexibility, accuracy, and stability of the pressing mechanism 4 when adjusting parameters. During maintenance, repair personnel can quickly locate and solve problems without worrying about affecting other mechanisms. Maintenance time and costs are significantly reduced, improving the practicality and service life of the equipment.

[0034] It should be noted that in the description of this embodiment, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are merely 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. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. A width adjustment device for a belt looper, comprising a fixed bracket (1), a feeding mechanism (2), a cutting mechanism (3), a pressing mechanism (4), and a winding mechanism (5), wherein the pressing mechanism (4) comprises a first pressing component (4a) and a second pressing component (4b) for respectively fixing the two ends of the belt loop, and the winding mechanism (5) comprises a first winding component (5a) and a second winding component (5b) for respectively clamping the two ends of the belt loop, characterized in that: It also includes a first adjusting frame (6) and a second adjusting frame (7); The first adjusting frame (6) and the second adjusting frame (7) are slidably connected to the fixed bracket (1), and the first driving member (8) and the second driving member (9) respectively drive the first adjusting frame (6) and the second adjusting frame (7) to move laterally; The first pressing assembly (4a) and the first winding assembly (5a) are both mounted on the fixed bracket (1), the feeding mechanism (2), the cutting mechanism (3) and the second winding assembly (5b) are all mounted on the first adjusting frame (6), and the second pressing assembly (4b) is mounted on the second adjusting frame (7); The lateral movement of the second adjustment frame (7) is independent of the first adjustment frame (6), and the distance between the first pressing assembly (4a) and the second pressing assembly (4b) can be directly adjusted by the second driving member (9) to achieve independent control of the width adjustment of the pressing mechanism (4).

2. The width adjustment device of the stitching machine according to claim 1, characterized in that: The first driving component (8) includes a first driving motor (8a), a first screw (8b) connected to the output shaft of the first driving motor (8a), and a first slider (8c) threaded onto the first screw (8b) and connected to the first adjusting frame (6). The first driving motor (8a) drives the first screw (8b) to rotate, thereby causing the first slider (8c) and the first adjusting frame (6) to move laterally synchronously.

3. The width adjustment device of the stitching machine according to claim 1, characterized in that: The second driving component (9) includes a second driving motor (9a), a second screw (9b) connected to the output shaft of the second driving motor (9a), and a second slider (9c) threaded onto the second screw (9b) and connected to the second adjusting frame (7). The second driving motor (9a) drives the second screw (9b) to rotate, thereby causing the second slider (9c) and the second adjusting frame (7) to move laterally in sync.

4. The width adjustment device of the stitching machine according to claim 3, characterized in that: The fixed bracket (1) is provided with a first mounting plate (1a) extending laterally, and a guide rail (1b) extending laterally is provided on the first mounting plate (1a). The second slider (9c) is provided with a groove (9c1) that matches the guide rail (1b).

5. The width adjustment device of the stitching machine according to claim 4, characterized in that: The first mounting plate (1a) is provided with a vertically extending second mounting plate (1c), and the second mounting plate (1c) has a transversely extending mounting hole (1d) for rotatably connecting the end of the second screw (9b).

6. The width adjustment device of the stitching machine according to claim 3, characterized in that: The fixed bracket (1) is provided with a vertically extending fixed plate (1e), and the fixed plate (1e) is provided with a movable plate (1f) that can be raised and lowered relative to the fixed plate (1e) and a cylinder (1g) that drives the movable plate (1f) to be raised and lowered. The first pressing assembly (4a) is provided on the movable plate (1f) to realize the raising and lowering. A first guide rail mechanism (1e1) is provided between the fixed plate (1e) and the movable plate (1f) to facilitate the raising and lowering of the movable plate (1f).

7. The width adjustment device of the stitching machine according to claim 6, characterized in that: The second adjusting frame (7) is mounted on the second slider (9c) in a way that allows it to move up and down. A guide groove (7a) extending laterally is formed on the second adjusting frame (7). A guide post (1f1) is protruding on the movable plate (1f) and adapted to the guide groove (7a). A second guide rail mechanism (7b) is also provided between the second slider (9c) and the second adjusting frame (7) to facilitate the second adjusting frame (7) to move up and down with the movable plate (1f).

8. The width adjustment device of the stitching machine according to claim 7, characterized in that: The bottom of the second slider (9c) has a downwardly extending first connecting portion (9c2), and the second guide rail mechanism (7b) is connected to the first connecting portion (9c2).

9. The width adjustment device of the stitching machine according to claim 1, characterized in that: The second adjusting frame (7) also has a second connecting part (7c) extending toward the front end, and the second pressing assembly (4b) is mounted on the second connecting part (7c).

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