Full-automatic folding and hemming device

Abstract

The application provides a full-automatic fold-seam edge device, which comprises a machine body, two traction rollers are rotationally connected inside the machine body, a first guide roller and a second guide roller are arranged on one side of the traction rollers, the first guide roller and the second guide roller are both rotationally connected inside the machine body, a tension control mechanism is arranged between the first guide roller and the second guide roller, a fixed cylinder is fixedly installed inside the machine body, a single-thread overlock machine is arranged on the upper side of the fixed cylinder, an adjusting mechanism is arranged between the single-thread overlock machine and the fixed cylinder, and a flattening roller is arranged on one side of the fixed cylinder. Through the use of the tension control mechanism, the handle is rotated to drive the rotating rod, the bevel gear is driven to rotate the threaded rod, the threaded cylinder and the fixed frame are further driven to move up and down, the position of the top roller is adjusted, the leather tension can be quickly adjusted. No matter what kind of elasticity and thickness of artificial leather is faced, it can be quickly adapted, the leather relaxation or tightness is avoided, and the seam quality and effect are effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of leather processing equipment, specifically to a fully automatic folding and sewing device. Background Technology

[0002] In the leather processing industry, the application of both synthetic and natural leather is becoming increasingly widespread, covering multiple sectors such as clothing, footwear, and furniture. As market demand for leather products grows, traditional manual or semi-automatic hemming methods have limited efficiency. The emergence of fully automatic folding hemming devices aligns with the trend towards automation and efficiency in leather processing, meeting the requirements for rapid and precise hemming operations in large-scale production.

[0003] The prior art disclosed in patent publication (announcement) number CN104652047B is a folding and sewing advancing mechanism for artificial leather, including a traction roller, a first guide roller, a second guide roller, a third guide roller, and a fourth guide roller arranged from left to right on the frame. The fabric advances from right to left through the fourth guide roller and exits from the traction roller. The key feature is that a fabric support beater is arranged between the first and second guide rollers, and a single-thread overlock sewing machine is arranged between the third and fourth guide rollers. The fabric support beater and the single-thread overlock sewing machine are respectively connected by a drive motor, and the drive motor drives the fabric support beater and the single-thread overlock sewing machine to work in linkage. The up-and-down movement speed of the needle of the single-thread overlock sewing machine is twice the rotation speed of the fabric support beater.

[0004] The aforementioned patent document discloses a folding and sewing advance mechanism for artificial leather. While it can solve the problem of needle breakage and reduced quality of artificial leather when the needle pitch of a conventional folding and sewing machine is at most 2 cm and the fabric is continuously advancing, its shortcomings are:

[0005] The artificial leather folding and sewing mechanism described in the aforementioned patent document is difficult to adjust to a suitable tension quickly when using artificial leathers of different elasticity and thickness. It cannot adapt to the characteristics of various types of leather and is prone to causing the leather to become loose or overly tight during sewing, affecting the quality and effect of the sewing.

[0006] Furthermore, when processing artificial leather of different sizes, the position of the single-thread overlock sewing machine often needs to be adjusted according to the actual condition of the leather. The artificial leather folding and sewing advancement mechanism in the aforementioned patent document is not convenient for adjusting the position of the single-thread overlock sewing machine.

[0007] Therefore, we have made improvements to this by proposing a fully automatic folding and sewing device. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a fully automatic folding and sewing device, which solves the problems mentioned in the background art.

[0009] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0010] A fully automatic folding and sewing device is used to solve the above problems.

[0011] The application is as follows:

[0012] The machine includes a body, inside which two traction rollers are rotatably connected. A first guide roller and a second guide roller are provided on one side of the traction rollers. The first guide roller and the second guide roller are rotatably connected inside the machine body. A tension control mechanism is provided between the first guide roller and the second guide roller. A fixed cylinder is fixedly installed inside the machine body. A single-thread overlock sewing machine is provided on the upper side of the fixed cylinder. An adjustment mechanism is provided between the single-thread overlock sewing machine and the fixed cylinder. A flattening roller is provided on one side of the fixed cylinder. A third guide roller is provided on the other side of the fixed cylinder.

[0013] The tension control mechanism includes a fixed frame, and a top roller is rotatably connected inside the fixed frame. A fixed box is fixedly installed inside the machine body, and a threaded rod is rotatably connected to the upper surface of the fixed box. A threaded cylinder is threadedly connected to the outside of the threaded rod, and the threaded cylinder is fixedly installed on the lower surface of the fixed frame.

[0014] As a preferred technical solution of this application, a first bevel gear is fixedly installed at the lower end of the threaded rod, and the first bevel gear is located inside the fixed box. A second bevel gear is meshed with one side of the first bevel gear, and a rotating rod is fixedly installed inside the second bevel gear. The rotating rod is rotatably connected inside the fixed box, and a rotating handle is fixedly installed at the other end of the rotating rod.

[0015] As a preferred technical solution of this application, a fixing rod is fixedly installed on the upper surface of the fixing box, and a sleeve is fixedly installed on the lower surface of the fixing frame, with the fixing rod and the sleeve being slidably connected.

[0016] As a preferred technical solution of this application, the adjustment mechanism includes a sliding plate, which is slidably connected inside the fixed cylinder, and the single-thread overlock sewing machine is fixedly installed on the upper surface of one end of the sliding plate.

[0017] As a preferred technical solution of this application, the sliding plate has a sliding groove inside, and a moving strip is slidably connected inside the sliding groove. A locking block is fixedly installed on the lower surface of one end of the moving strip. A plurality of locking slots are opened on the lower surface of one end of the fixed cylinder, and the locking block and the locking slots are connected by a locking connection.

[0018] As a preferred technical solution of this application, a push block is fixedly installed on the lower surface of the other end of the moving bar, and a spring is fixedly installed between the moving bar and the inner wall of the slide groove.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] In the scheme of this application:

[0021] 1. By using the tension control mechanism, turning the handle drives the rotating rod, which in turn drives the threaded rod to rotate via bevel gear transmission. This, in turn, moves the threaded cylinder and the fixed frame up and down, allowing for adjustment of the top roller position and rapid adjustment of the leather tension. It can quickly adapt to any type of artificial leather, regardless of its elasticity or thickness, preventing the leather from becoming too loose or too tight, and effectively ensuring the quality and effect of the stitching.

[0022] 2. By using the adjustment mechanism, the sliding plate slides within the fixed cylinder, allowing for initial adjustment of the single-thread overlock sewing machine's position. Pressing the button disengages the locking block from the slot, moving the sliding plate to the desired position, and then releasing the button allows the locking block to re-engage and secure itself. This facilitates quick adjustment of the single-thread overlock sewing machine's position according to different leather sizes, ensuring precise stitching and improving production efficiency and product quality. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below;

[0025] Figure 3 This is a cross-sectional structural diagram of the tension control mechanism of this utility model;

[0026] Figure 4 This is a cross-sectional structural diagram of the adjustment mechanism of this utility model.

[0027] The image shows:

[0028] 1. Machine body; 2. Traction roller; 3. First guide roller; 4. Second guide roller; 5. Tension control mechanism; 501. Fixed frame; 502. Top roller; 503. Fixed box; 504. Threaded rod; 505. Threaded cylinder; 506. First bevel gear; 507. Second bevel gear; 508. Rotating rod; 509. Rotating handle; 510. Fixed rod; 511. Sleeve; 6. Fixed cylinder; 7. Single-thread overlock sewing machine; 8. Adjustment mechanism; 801. Sliding plate; 802. Slide groove; 803. Moving bar; 804. Locking block; 805. Locking groove; 806. Pressing block; 807. Spring; 9. Flattening roller; 10. Third guide roller. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described examples are only some embodiments of this utility model, and not all embodiments.

[0030] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0031] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms 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, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] To address the technical problems in the background section, the following fully automatic folding and sewing device is provided:

[0035] Combination Figure 1 - Figure 4 As shown, the fully automatic folding and sewing device provided by this utility model includes a machine body 1. Two traction rollers 2 are rotatably connected inside the machine body 1. A first guide roller 3 and a second guide roller 4 are provided on one side of the traction rollers 2. The first guide roller 3 and the second guide roller 4 are rotatably connected inside the machine body 1. A tension control mechanism 5 is provided between the first guide roller 3 and the second guide roller 4. A fixed cylinder 6 is fixedly installed inside the machine body 1. A single-thread overlock sewing machine 7 is provided on the upper side of the fixed cylinder 6. An adjustment mechanism 8 is provided between the single-thread overlock sewing machine 7 and the fixed cylinder 6. A flattening roller 9 is provided on one side of the fixed cylinder 6. A third guide roller 10 is provided on the other side of the fixed cylinder 6. The tension control mechanism 5 includes a fixed frame 501. A top roller 502 is rotatably connected inside the fixed frame 501. A fixed box 503 is fixedly installed inside the machine body 1. A threaded rod 504 is rotatably connected to the upper surface of the fixed box 503. A threaded cylinder 505 is threadedly connected to the outside of the threaded rod 504. The threaded cylinder 505 is fixedly installed on the lower surface of the fixed frame 501.

[0036] In this embodiment: two traction rollers 2 rotatably connected inside the machine body are responsible for the initial positioning of the leather; on one side of the traction rollers 2, the first guide roller 3 and the second guide roller 4 work together to guide the stable transmission of the leather, and a tension control mechanism 5 is set between them. This mechanism, through the fixed frame 501 and its internal rotating top roller 502, cooperates with the threaded rod 504 rotatably connected on the fixed box 503 and the threaded cylinder 505 threadedly connected thereto, to adjust the tension of the leather and ensure that the leather maintains appropriate tension during the sewing process; the fixed cylinder 6 serves as the mounting base for the single-thread overlock sewing machine 7, and the single-thread overlock sewing machine 7 set on its upper side can be flexibly adjusted in position through the adjustment mechanism 8 to adapt to the sewing requirements of leather of different sizes; the flattening roller 9 on one side of the fixed cylinder 6 is used to further flatten the leather, while the third guide roller 10 on the other side assists in guiding the leather to ensure the smooth progress of the entire sewing process.

[0037] In a preferred embodiment, a first bevel gear 506 is fixedly installed at the lower end of the threaded rod 504, and the first bevel gear 506 is disposed inside the fixed box 503. A second bevel gear 507 is meshed with one side of the first bevel gear 506, and a rotating rod 508 is fixedly installed inside the second bevel gear 507. The rotating rod 508 is rotatably connected inside the fixed box 503, and a rotating handle 509 is fixedly installed at the other end of the rotating rod 508.

[0038] In this embodiment, a second bevel gear 507 is meshed with one side of the first bevel gear 506, achieving efficient power transmission and direction conversion. A rotating rod 508 is fixedly installed inside the second bevel gear 507 and rotates within the fixed box 503. The user only needs to rotate the rotating handle 509 on one side to drive the threaded rod 504 to rotate via the bevel gear transmission, thereby adjusting the position of the top roller 502, controlling the tension of the leather, and ensuring high-quality hemming operations.

[0039] In a preferred embodiment, a fixing rod 510 is fixedly installed on the upper surface of the fixing box 503, and a sleeve 511 is fixedly installed on the lower surface of the fixing frame 501, with the fixing rod 510 and the sleeve 511 slidably connected.

[0040] In this embodiment: during the process of the threaded rod 504 driving the fixed frame 501 to move up and down to adjust the position of the top roller 502, the fixed rod 510 slides smoothly in the sleeve 511, providing a reliable guide for the movement of the fixed frame 501, effectively preventing the fixed frame 501 from shaking or shifting during the movement, ensuring the accuracy of the top roller 502 position adjustment, and thus ensuring the stability and reliability of the leather tension adjustment.

[0041] In a preferred embodiment, the adjusting mechanism 8 includes a sliding plate 801, which is slidably connected within the fixed cylinder 6, and the single-thread overlock sewing machine 7 is fixedly installed on the upper surface of one end of the sliding plate 801.

[0042] In this embodiment, the operator can easily push or pull the sliding plate 801 according to the sewing requirements of different sizes of leather, thereby quickly adjusting the position of the single-thread overlock sewing machine 7, ensuring the accuracy and efficiency of the sewing operation, and further improving the practicality and adaptability of the fully automatic folding sewing device.

[0043] In a preferred embodiment, the sliding plate 801 has a sliding groove 802 inside, and a moving strip 803 is slidably connected inside the sliding groove 802. A locking block 804 is fixedly installed on the lower surface of one end of the moving strip 803. A plurality of locking slots 805 are opened on the lower surface of one end of the fixed cylinder 6, and the locking block 804 and the locking slots 805 are connected by a locking connection.

[0044] In this embodiment: when it is necessary to adjust the position of the single-thread overlock sewing machine 7, the operator can push the moving bar 803 to disengage the locking block 804 from the current slot 805, then slide the sliding plate 801 to the target position, and then release the moving bar 803 to reset it. The locking block 804 will then automatically lock into the new slot 805, achieving a stable lock-in of the position. This ensures the accuracy and stability of the position adjustment of the single-thread overlock sewing machine 7, and effectively improves the adjustment convenience and reliability of the fully automatic folding and sewing device.

[0045] In a preferred embodiment, a push block 806 is fixedly installed on the lower surface of the other end of the moving bar 803, and a spring 807 is fixedly installed between the moving bar 803 and the inner wall of the slide groove 802.

[0046] In this embodiment, a button 806 is cleverly fixedly installed on the lower surface of the other end of the moving strip 803, allowing the operator to easily control the movement of the moving strip 803 by pressing the button 806. Simultaneously, a spring 807 is fixedly installed between the moving strip 803 and the inner wall of the slide groove 802. The elasticity of the spring 807 automatically pushes the moving strip 803 back to its original position after the operator releases the button 806, ensuring that the locking block 804 accurately engages in the corresponding slot 805, thus achieving a stable lock on the position of the single-thread overlock sewing machine 7.

[0047] Specifically, the working principle of this solution is as follows:

[0048] During use, the two traction rollers 2 inside the machine body 1 rotate to initially limit the leather. After passing through the traction rollers 2, the leather is guided and transported by the first guide roller 3 and the second guide roller 4. During this process, the tension control mechanism 5 plays its role. Turning the rotating handle 509 drives the rotating rod 508 and the second bevel gear 507 to rotate, which in turn causes the threaded rod 504 to rotate through the first bevel gear 506. The threaded cylinder 505 drives the fixed frame 501 to move up and down, and the top roller 502 adjusts its position accordingly, thereby adjusting the tension of the leather. The sliding connection between the fixed rod 510 and the sleeve 511 ensures the stability of the adjustment.

[0049] The fixed cylinder 6 serves as the mounting base for the single-thread overlock sewing machine 7. The operator can push or pull the sliding plate 801 according to the leather size to adjust the position of the machine. During adjustment, pressing the button 806 moves the moving strip 803, causing the locking block 804 to disengage from the slot 805. Once in position, releasing the button 806 causes the spring 807 to push the moving strip 803 back to its original position, and the locking block 804 engages in the new slot 805 to lock the position. After the leather is further flattened by the flattening roller 9, the single-thread overlock sewing machine 7 sews the edges. The third guide roller 10 assists in guiding the leather, ensuring a smooth, precise, and efficient sewing process.

[0050] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0051] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A fully automatic folding and sewing device, comprising a machine body (1), characterized in that: The machine body (1) has two traction rollers (2) rotatably connected inside, and a first guide roller (3) and a second guide roller (4) are provided on one side of the traction roller (2). The first guide roller (3) and the second guide roller (4) are rotatably connected inside the machine body (1), and a tension control mechanism (5) is provided between the first guide roller (3) and the second guide roller (4). A fixed cylinder (6) is fixedly installed inside the machine body (1), and a single-thread overlock sewing machine (7) is provided on the upper side of the fixed cylinder (6). An adjustment mechanism (8) is provided between the single-thread overlock sewing machine (7) and the fixed cylinder (6). A flattening roller (9) is provided on one side of the fixed cylinder (6), and a third guide roller (10) is provided on the other side of the fixed cylinder (6). The tension control mechanism (5) includes a fixed frame (501), and a top roller (502) is rotatably connected inside the fixed frame (501). A fixed box (503) is fixedly installed inside the machine body (1), and a threaded rod (504) is rotatably connected to the upper surface of the fixed box (503). A threaded cylinder (505) is threadedly connected to the outside of the threaded rod (504), and the threaded cylinder (505) is fixedly installed on the lower surface of the fixed frame (501).

2. The fully automatic folding and sewing device according to claim 1, characterized in that: The lower end of the threaded rod (504) is fixedly installed with a first bevel gear (506), and the first bevel gear (506) is located inside the fixed box (503). A second bevel gear (507) is meshed with one side of the first bevel gear (506), and a rotating rod (508) is fixedly installed inside the second bevel gear (507). The rotating rod (508) is rotatably connected inside the fixed box (503), and a rotating handle (509) is fixedly installed at the other end of the rotating rod (508).

3. The fully automatic folding and sewing device according to claim 1, characterized in that: A fixing rod (510) is fixedly installed on the upper surface of the fixing box (503), and a sleeve (511) is fixedly installed on the lower surface of the fixing frame (501), and the fixing rod (510) and the sleeve (511) are slidably connected.

4. The fully automatic folding and sewing device according to claim 1, characterized in that: The adjustment mechanism (8) includes a sliding plate (801), and the sliding plate (801) is slidably connected inside the fixed cylinder (6). The single-thread overlock sewing machine (7) is fixedly installed on the upper surface of one end of the sliding plate (801).

5. The fully automatic folding and sewing device according to claim 4, characterized in that: The sliding plate (801) has a sliding groove (802) inside, and a moving strip (803) is slidably connected inside the sliding groove (802). A locking block (804) is fixedly installed on the lower surface of one end of the moving strip (803). A plurality of locking slots (805) are opened on the lower surface of one end of the fixed cylinder (6), and the locking block (804) and the locking slots (805) are connected by a locking connection.

6. The fully automatic folding and sewing device according to claim 5, characterized in that: A push block (806) is fixedly installed on the lower surface of the other end of the moving bar (803), and a spring (807) is fixedly installed between the moving bar (803) and the inner wall of the slide (802).

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