Cloth overlock device for canvas processing

Abstract

The utility model relates to the technical field of cloth overlock, in particular to a cloth overlock device for canvas processing, which comprises a sewing table, a sliding platform, a support frame, a thread leading ring, an upper thread table, a threading assembly and a thread hooking assembly, the sliding platform is slidably connected to the top of the sewing table, the support frame is mounted on the outer side of the sewing table, and the thread leading ring is mounted on the top of the support frame; the upper thread table is installed at the lower end of the supporting frame, the threading assembly is arranged above the upper thread table and movably connected to the interior of the supporting frame, and the thread hooking assembly is installed in the upper thread table. According to the cloth overlock device for canvas processing, double-thread sewing operation is adopted, threading of the threading needle body and synchronous movement of an upper thread of the wooden spool shuttle can be achieved through a single motor, the upper thread is captured from the threading needle, accordingly, a link ring is formed, the upper thread on the threading needle and a lower bottom thread in the wooden spool shuttle are wound together, and the sewing efficiency is improved. Stable cloth overlock can be achieved through repeated operation, and the risk of thread loosening is avoided.

Description

Technical Field

[0001] This application relates to the field of fabric overlocking technology, and in particular to a fabric overlocking device for canvas processing. Background Technology

[0002] The main function of an overlock machine is generally to prevent the seams of garments from fraying. Overlock machines can be used not only for binding edges, but also for sewing T-shirts, sportswear, underwear, knitwear and other fabrics. At the same time, most fabrics are prone to fraying at the edges after cutting. Before the finished product is made, the edges need to be overlocked to prevent the fabric from fraying. Therefore, special processes are required in the sewing production of garments, and overlock machines are indispensable.

[0003] A search revealed that publication number CN215561474U discloses a sewing device for preventing loosening of textile fabric during slitting. This device uses two sets of conveying components to transport the fabric. A motor rotates, driving a second gear, which in turn drives a first gear. The first gear then drives a rotating shaft, which in turn drives rollers. The rotation of the rollers moves the fabric located on the upper surface of the base. The conveying component closer to the roll drum transports the unslit fabric, while the component further away transports the slit fabric. Simultaneously, a control device controls the operation of the two motors and their operating conditions, thereby controlling the speed of the reciprocating screw and rollers, and consequently, the ironing time and the fabric conveying speed. Depending on the fabric material, the ironing time can be adjusted accordingly.

[0004] Regarding the aforementioned technologies, the inventors believe that the following technical defects exist and require improvement:

[0005] This device only softens the fabric. However, the traditional hook and button sewing method still causes jamming during double-line sewing, affecting the sewing accuracy of the overlock and posing a risk of unraveling. Utility Model Content

[0006] This application provides a fabric overlocking device for canvas processing to improve the following technical problems:

[0007] Common fabric overlocking devices only soften the fabric, while traditional hook and button sewing methods still experience jamming during double-stitching, affecting the sewing precision and posing a risk of unraveling.

[0008] This application provides a fabric overlocking device for canvas processing, which adopts the following technical solution:

[0009] A fabric overlocking device for canvas processing includes a sewing table, a sliding platform, a support frame, a lead wire, a threading platform, a threading assembly, and a hook assembly. The sliding platform is slidably connected to the top of the sewing table, the support frame is installed on the outside of the sewing table, the lead wire is installed on the top of the support frame, the threading platform is installed at the lower end of the support frame, the threading assembly is disposed above the threading platform and movably connected to the inside of the support frame, and the hook assembly is installed inside the threading platform.

[0010] The sliding platform holds the canvas, and the sewing table, in conjunction with the sliding platform, smoothly pushes the canvas above to the threading point above the threading table. The lead wire is used to fix the wiring, and the threading assembly is used to thread and fix the end of the lead wire and pass the end through the interior of the canvas. The hook assembly captures the thread at the point where the threading assembly passes through the canvas and hooks it into a connecting loop.

[0011] In one feasible technical solution of this application, the threading assembly includes a stepper motor, a drive shaft, a cam, a positioning plate, and a threading needle body. The motor shaft of the stepper motor is fixedly connected to one end of the drive shaft via a coupling. The cam is fitted on the outside of the drive shaft, and the protruding end surface of the cam contacts the positioning plate and is used to press the positioning plate. The bottom of the positioning plate is fixedly connected to the top of the threading needle body. The thread hole of the threading needle body is fixedly connected to the thread end and is used to pass through the canvas.

[0012] In one feasible technical solution of this application, the hook assembly includes a guide shaft, a second cam, a second positioning plate, an L-shaped bracket, a rotating shaft, an arc-shaped contact plate, and a wooden spool shuttle. The guide shaft is rotatably connected inside the face plate. The second cam is sleeved on the outer wall of the guide shaft, and the protruding end surface of the second cam abuts against the surface of the second positioning plate. The L-shaped bracket is fixedly connected to the outer side of the second positioning plate. The rotating shaft is rotatably connected to the inner side of the L-shaped bracket. The arc-shaped contact plate is fixedly connected to the outer side of the rotating shaft. The wooden spool shuttle is sleeved on the other side of the rotating shaft.

[0013] In one feasible technical solution of this application, a transmission belt is also closely attached to the outer side of the drive shaft and the guide shaft.

[0014] In one feasible technical solution of this application, magnet blocks are also adhered to the opposite side surfaces of the arc-shaped contact plates, and the magnet blocks are used to attract the contact surfaces of the two sets of arc-shaped contact plates together.

[0015] In one feasible technical solution of this application, both the support frame and the surface platform are provided with spring support rods and fixing blocks inside. The fixing block is fixedly connected to one side of the spring support rod, and the spring support rod is used to contact the positioning plate one and the positioning plate two.

[0016] In one feasible technical solution of this application, a wire inlet hole is also provided at the center of the top of the wooden spool shuttle.

[0017] In one feasible technical solution of this application, the top of the sewing table is further provided with a groove that is adapted to the bottom of the sliding platform.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] This product uses a double-thread sewing operation. A single motor can realize the synchronous movement of the threading needle body and the top thread of the wooden bobbin shuttle, and capture the top thread from the threading needle to form a linking loop. The top thread on the threading needle is wrapped with the bottom thread inside the wooden bobbin shuttle. Repeated operation can achieve stable fabric edge locking and eliminate the risk of unraveling. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the fabric overlocking device for canvas processing according to an embodiment of this application.

[0022] Figure 2 This is a schematic diagram of the structure of the back of the support frame in an embodiment of this application.

[0023] Figure 3 This is a distribution diagram of the thread platform and the threading needle body in the embodiments of this application.

[0024] Figure 4 This is a schematic diagram of the threading assembly structure in an embodiment of this application.

[0025] Figure 5 This is a schematic diagram of the hook assembly in an embodiment of this application.

[0026] Figure 6 This is a line drawing of the arc-shaped contact plate in the embodiments of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Sewing table; 2. Sliding platform; 3. Support frame; 4. Lead thread; 5. Threading table;

[0029] 6. Threading assembly; 61. Stepper motor; 62. Drive shaft; 63. Cam 1; 64. Positioning plate 1; 65. Threading needle body;

[0030] 7. Hook assembly; 71. Guide shaft; 72. Cam II; 73. Positioning plate II; 74. L-shaped bracket; 75. Rotating shaft; 76. Arc-shaped contact plate; 77. Wooden spool shuttle;

[0031] 8. Conveyor belt; 9. Magnet block; 10. Spring support rod; 11. Fixing block; 12. Wire inlet hole; 13. Slide groove; 14. Bottom coil. Detailed Implementation

[0032] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0035] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0036] The following is combined with Figure 1-6 This application is described in further detail.

[0037] This application discloses a fabric overlocking device for canvas processing. (Refer to...) Figures 1 to 6The fabric overlocking device for canvas processing includes a sewing table 1, a sliding platform 2, a support frame 3, a lead wire 4, a top thread table 5, a threading assembly 6, and a hook assembly 7. The sliding platform 2 is slidably connected to the top of the sewing table 1. The support frame 3 is installed on the outside of the sewing table 1. The lead wire 4 is installed on the top of the support frame 3. The top thread table 5 is installed at the lower end of the support frame 3. The threading assembly 6 is located above the top thread table 5 and is movably connected to the inside of the support frame 3. The hook assembly 7 is installed inside the top thread table 5.

[0038] The sliding platform 2 holds the canvas, and the sewing table 1, in conjunction with the sliding platform 2, is used to smoothly push the canvas above to the threading point above the threading table 5. The lead wire 4 is used to fix the wiring, and the threading assembly 6 is used to thread and fix the end of the lead wire 4 and pass the end of the wire through the inside of the canvas. The hook assembly 7 captures the thread at the point where the threading assembly 6 passes through the canvas and hooks it into a connecting loop.

[0039] The threading assembly 6 includes a stepper motor 61, a drive shaft 62, a cam 63, a positioning plate 64, and a threading needle body 65. The motor shaft of the stepper motor 61 is fixedly connected to one end of the drive shaft 62 via a coupling. The cam 63 is sleeved on the outside of the drive shaft 62, and the protruding end surface of the cam 63 contacts the positioning plate 64 and is used to press the positioning plate 64. The bottom of the positioning plate 64 is fixedly connected to the top of the threading needle body 65. The thread hole of the threading needle body 65 is fixedly connected to the thread end and is used to pass through the canvas.

[0040] The thread-hooking assembly 7 includes a guide shaft 71, a second cam 72, a second positioning plate 73, an L-shaped bracket 74, a rotating shaft 75, an arc-shaped contact plate 76, and a wooden spool shuttle 77. The guide shaft 71 is rotatably connected to the inside of the thread table 5. The second cam 72 is sleeved on the outer wall of the guide shaft 71, and the protruding end surface of the second cam 72 abuts against the surface of the second positioning plate 73. The L-shaped bracket 74 is fixedly connected to the outside of the second positioning plate 73. The rotating shaft 75 is rotatably connected to the inside of the L-shaped bracket 74. The arc-shaped contact plate 76 is fixedly connected to the outside of the rotating shaft 75. The wooden spool shuttle 77 is sleeved on the other side of the rotating shaft 75.

[0041] The drive shaft 62 and guide shaft 71 are also closely fitted with a transmission belt 8.

[0042] Magnet blocks 9 are also attached to the opposite side surfaces of the arc-shaped contact plates 76. The magnet blocks 9 are used to attract the contact surfaces of the two sets of arc-shaped contact plates 76.

[0043] Both the support frame 3 and the surface table 5 are equipped with spring support rods 10 and fixing blocks 11. The fixing blocks 11 are fixedly connected to one side of the spring support rods 10. The spring support rods 10 are used to contact the positioning plate 64 and the positioning plate 73.

[0044] The top center of the wooden spool shuttle 77 is also provided with a wire inlet hole 12.

[0045] The top of the sewing table 1 is also provided with a groove 13 that is compatible with the bottom of the sliding platform 2.

[0046] The usage process of the fabric overlocking device for canvas processing according to the embodiments of this application is roughly as follows:

[0047] Place the canvas to be hemmed on the sliding platform 2, then push the sliding platform 2 along the slotting direction of the slide groove 13 to push the canvas to the working position of the thread table 5. Then, wrap and knot the end of the lead coil 4 above the support frame 3 in the retention hole of the threading needle body. Then, start the stepper motor 61 and drive the cam 63 to rotate through the drive shaft 62. Under the elastic cooperation of the spring support rod 10, the positioning plate 64 is always in contact with the surface of the cam 63. The irregular surface of the cam 63 repeatedly pushes the positioning plate 64 downward when rotating. 64, so that the threading needle body located below can drive the thread end through the canvas and into the thread table 5. After the thread end passes through the lower end of the fabric and is pulled out to 2-3 cm, during this process, the guide shaft 71, which is started synchronously by the conveyor belt 8, drives the second cam 72 to rotate. The second cam 72 pushes the second positioning plate 73, and through the L-shaped bracket 74, drives the outer tip of the wooden bobbin shuttle 77 to pass through the thread end and form a connecting ring. The thread on the threading needle body 65 is wrapped together with the thread end on the bottom coil 14 inside the wooden bobbin shuttle 77. As the threading needle moves upward, the thread end applies the waste to the arc-shaped contact plate 76. With the rotation of the rotating shaft 75, the thread end moves the magnet block 9 upward along the arc-shaped contact plate 76 and enters between the arc-shaped contact plates 76. Finally, it passes through the connection of the upper arc-shaped contact plate 76. During this process, the two sets of arc-shaped contact plates 76 are always attracted and are not completely disconnected, thus completing a complete hooking operation. The threading and hooking operations can be synchronized with a single motor, effectively saving costs and ensuring stable edge locking.

[0048] The beneficial technical effects of the fabric overlocking device for canvas processing according to the embodiments of this application are roughly as follows:

[0049] This product uses a double-thread sewing operation. A single motor can realize the synchronous movement of the threading needle body 65 and the top thread of the wooden bobbin shuttle 77, and capture the top thread from the threading needle to form a connecting loop. The top thread on the threading needle is wrapped with the bottom thread inside the wooden bobbin shuttle 77. Repeated operation can achieve stable fabric edge locking and eliminate the risk of unraveling.

[0050] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fabric overlocking device for canvas processing, characterized in that, The sewing table (1), sliding platform (2), support frame (3), lead wire (4), threading table (5), threading assembly (6), and hook assembly (7) are included. The sliding platform (2) is slidably connected to the top of the sewing table (1). The support frame (3) is installed on the outside of the sewing table (1). The lead wire (4) is installed on the top of the support frame (3). The threading table (5) is installed at the lower end of the support frame (3). The threading assembly (6) is located above the threading table (5) and is movably connected to the inside of the support frame (3). The hook assembly (7) is installed inside the threading table (5). The sliding platform (2) holds the canvas, and the sewing table (1) works in conjunction with the sliding platform (2) to smoothly push the canvas above to the threading point above the threading table (5). The lead coil (4) is used to fix the wiring, and the threading assembly (6) is used to thread and fix the end of the lead coil (4) and pass the end of the thread through the inside of the canvas. The hook assembly (7) captures the thread at the point where the threading assembly (6) passes through the canvas and hooks it into a connecting loop.

2. The fabric overlocking device for canvas processing according to claim 1, characterized in that, The threading assembly (6) includes a stepper motor (61), a drive shaft (62), a cam (63), a positioning plate (64), and a threading needle body (65). The motor shaft of the stepper motor (61) is fixedly connected to one end of the drive shaft (62) via a coupling. The cam (63) is sleeved on the outside of the drive shaft (62), and the protruding end surface of the cam (63) contacts the positioning plate (64) and is used to press the positioning plate (64). The bottom of the positioning plate (64) is fixedly connected to the top of the threading needle body (65). The thread hole of the threading needle body (65) is fixedly connected to the thread end and is used to pass through the canvas.

3. The fabric overlocking device for canvas processing according to claim 2, characterized in that, The hook assembly (7) includes a guide shaft (71), a second cam (72), a second positioning plate (73), an L-shaped bracket (74), a rotating shaft (75), an arc-shaped contact plate (76), and a wooden bobbin shuttle (77). The guide shaft (71) is rotatably connected inside the face plate (5), and the second cam (72) is sleeved on the guide shaft (71). The outer wall of the cam (72) and the protruding end surface of the cam (72) abut against the surface of the positioning plate (73). The L-shaped bracket (74) is fixedly connected to the outside of the positioning plate (73). The rotating shaft (75) is rotatably connected to the inside of the L-shaped bracket (74). The arc-shaped contact plate (76) is fixedly connected to the outside of the rotating shaft (75). The wooden bobbin shuttle (77) is sleeved on the other side of the rotating shaft (75).

4. The fabric overlocking device for canvas processing according to claim 3, characterized in that, A transmission belt (8) is also closely attached to the outer side of the drive shaft (62) and the guide shaft (71).

5. The fabric overlocking device for canvas processing according to claim 3, characterized in that, The opposite side surfaces of the arc-shaped contact plate (76) are also bonded with magnet blocks (9), which are used to attract the contact surfaces of the two sets of arc-shaped contact plates (76).

6. The fabric overlocking device for canvas processing according to claim 3, characterized in that, The support frame (3) and the surface platform (5) are both equipped with spring support rods (10) and fixing blocks (11). The fixing blocks (11) are fixedly connected to one side of the spring support rods (10). The spring support rods (10) are used to contact the first positioning plate (64) and the second positioning plate (73).

7. The fabric overlocking device for canvas processing according to claim 3, characterized in that, The wooden spool shuttle (77) also has a wire inlet hole (12) at the top center.

8. The fabric overlocking device for canvas processing according to claim 1, characterized in that, The top of the sewing table (1) is also provided with a groove (13) that is adapted to the bottom of the sliding platform (2).

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