Anti-lifting suture mechanism

Abstract

This utility model discloses an anti-arching sewing mechanism, including a frame. From front to back, the frame is equipped with an active roller assembly, a tension adjusting device, and a sewing device. The tension adjusting device includes two symmetrical first pillars fixedly connected to the top of the frame. Each first pillar has a vertically oriented groove, and a screw is vertically rotatably connected to the inner wall of the bottom of the groove. This utility model utilizes the tension adjusting device and a first motor to drive a worm gear and screw transmission structure to dynamically adjust the material tension path length and precisely control the material tension, preventing arching caused by uneven tension, improving sewing quality and finished product quality. Simultaneously, a hydraulic rod on the mounting plate drives the sewing device to move up and down, allowing it to quickly contact the material to perform the sewing action or quickly detach from the material for easy material replacement and position adjustment, improving the convenience and efficiency of the sewing operation.

Description

Technical Field

[0001] This utility model relates to the field of garment production equipment technology, and in particular to an anti-arching sewing mechanism. Background Technology

[0002] In traditional sewing processes, material tension control is a key factor affecting sewing quality. Existing sewing mechanisms often struggle to precisely and dynamically adjust material tension, easily leading to uneven tension and arching at the seam. This not only affects the appearance of the finished product but also reduces its practicality and durability. Furthermore, existing sewing devices lack operational flexibility, making material changes or position adjustments cumbersome and reducing production efficiency.

[0003] Therefore, we propose an anti-arching stitching mechanism. Utility Model Content

[0004] The main purpose of this utility model is to provide an anti-arching sewing mechanism to prevent arching caused by uneven material tension during sewing, and to improve the problems of inflexible operation of sewing devices, cumbersome material replacement and position adjustment, thereby improving the appearance quality, practicality and durability of sewn products, while increasing production efficiency, and effectively solving the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An anti-arching sewing mechanism includes a frame. From front to back, the frame is equipped with an active roller assembly, a tension adjusting device, and a sewing device. The tension adjusting device includes two symmetrical first pillars fixedly connected to the top of the frame. A vertical groove is formed inside each first pillar. A screw is rotatably connected vertically to the inner wall of the bottom end of the groove. An auxiliary roller assembly that moves up and down is mounted on the screw. A square box is fixedly connected to the top of each first pillar. The top of the screw extends through the first pillar into the interior of the square box and is fixedly connected to a worm gear. A worm gear is rotatably connected longitudinally to the inner wall of the square box. The worm gear meshes with a worm wheel. A first motor is fixedly installed on the outer wall of one end of the square box. The output shaft of the first motor is coaxially connected to one end of the worm gear.

[0007] Two symmetrical mounting plates are fixedly installed at the top of the frame, and hydraulic rods are fixedly installed at the top of the mounting plates. The top of the hydraulic rods is connected to the sewing device.

[0008] By adopting the above technical solution, after the first motor starts, the output shaft drives the worm to rotate. The worm meshes with the worm wheel, transmitting the rotational motion to the screw. The screw and the worm wheel are fixed coaxially. When the screw rotates, its threaded structure drives the auxiliary roller assembly to move up and down along the slide groove of the first support column. When the auxiliary roller assembly moves down, it increases the tension path length of the material such as fabric, thus increasing the tension. When it moves up, it shortens the path length, thus reducing the tension. This allows for dynamic control of the material tension by adjusting the roller spacing, preventing arching caused by uneven tension during sewing. The two symmetrical first supports, screw, and auxiliary roller assembly move synchronously, ensuring consistent tension on both sides of the material and preventing offset or twisting.

[0009] The hydraulic rods on the mounting plate are powered by a hydraulic system to drive the sewing device to move up and down. When it descends, the sewing device, such as a sewing machine needle or presser foot, contacts the material and performs the sewing action. When it rises, it detaches from the material, making it easy to change the material or adjust the position.

[0010] Furthermore, the top of the frame is fixedly connected to two symmetrical second pillars, and the drive roller assembly includes a third crossbeam fixedly installed on the top of the two second pillars, with the drive roller rotatably connected to the inner side of the third crossbeam.

[0011] By adopting the above technical solution, two symmetrical second pillars are fixed at the top of the frame to form a stable support structure, ensuring the installation accuracy and force balance of the active roller assembly, avoiding the active roller from shifting due to unilateral force, and ensuring the straightness of the material conveying direction; the third crossbeam is fixed at the top of the second pillars as the mounting carrier of the active roller, and the active roller is rotatably connected to the inside of the third crossbeam through bearings, and can rotate freely around its own axis.

[0012] Furthermore, a second motor is fixedly installed on the upper side of one of the second pillars, and the output shaft of the second motor is coaxially connected to one end of the drive roller.

[0013] By adopting the above technical solution, after the second motor is powered on, the rotor drives the output shaft to rotate. The rotational motion of the output shaft is directly transmitted to the drive roller without any intermediate links, driving it to rotate around the axis.

[0014] Furthermore, the auxiliary roller assembly includes a first crossbeam threaded to the outside of the screw, the first crossbeam being slidably connected to the slide groove.

[0015] By adopting the above technical solution, the screw is vertically installed in the groove of the first support column, and its outer side is machined with threads to cooperate with the internal threaded hole of the first cross frame to form a screw transmission mechanism. The two sides of the first cross frame slide in contact with the inner wall of the groove, restricting its rotational freedom and allowing only vertical movement to avoid the cross frame from rotating due to the rotation of the screw. Since the tension adjustment device includes two symmetrical first supports, the screw in each support column is connected to the corresponding first cross frame through threads to ensure that the auxiliary rollers on both sides rise and fall synchronously, avoiding uneven force on the material.

[0016] The first motor drives the worm to rotate. The worm meshes with the worm wheel, transmitting the rotational motion to the screw. If the worm rotates clockwise, the worm wheel drives the screw to rotate clockwise. Assuming the thread direction is right-handed, the first crossbeam moves upward along the screw. Conversely, when the worm rotates counterclockwise, the first crossbeam moves downward. When the screw rotates, the first crossbeam converts the rotational motion of the screw into vertical linear motion due to the thread transmission and the limiting of the sliding groove.

[0017] Furthermore, two auxiliary rollers are rotatably connected to the inner side of the first crossbeam, and a channel for the fabric to pass through is opened between the two auxiliary rollers.

[0018] By adopting the above technical solution, two auxiliary rollers are arranged parallel to each other on the inner side of the first crossbeam to form a roller tension adjustment unit. The two rollers are rotatably connected to the crossbeam through bearings and can rotate freely to reduce the friction during fabric conveying. Rolling friction is much less than sliding friction. If the first crossbeam drives the auxiliary rollers to move downward, the curvature of the roller path increases, the fabric is stretched or straightened, and the tension rises. When the auxiliary rollers move upward, the fabric relaxes or the path shortens, and the tension decreases. By controlling the vertical position of the auxiliary rollers, the tension on the fabric can be changed in real time to avoid arching caused by uneven tension.

[0019] Furthermore, the suturing device includes a fixing frame that is fixedly installed on the top of two hydraulic rods respectively, and a second crossbeam is fixedly connected to the inner side of the fixing frame, and a suturing assembly is provided on the second crossbeam.

[0020] By adopting the above technical solution, two hydraulic rods are vertically fixed on the mounting plate of the frame, and the top end is connected to the fixed frame to form a double-support lifting mechanism. The hydraulic rods are symmetrically distributed to ensure that the fixed frame is subjected to uniform force when it is raised and lowered, avoiding tilting or jamming, and ensuring the verticality of the sewing assembly.

[0021] The fixed frame, as the actuator of the hydraulic rod, is fixedly connected to the second cross frame by bolts to form a rigid frame. The second cross frame spans the inside of the fixed frame and provides a mounting carrier for sewing components such as sewing machine needles, presser feet, and feed dogs, ensuring their positional accuracy.

[0022] When sewing is required, the hydraulic piston retracts, pulling the fixed frame and the second crossbeam downwards, so that the sewing assembly contacts the fabric. When sewing is completed or adjustments are needed, the piston rises, the fixed frame rises, and the sewing assembly detaches from the fabric. The hydraulic system can control the pressure of the sewing assembly on the fabric, such as the downward pressure of the presser foot, by adjusting the oil pressure, to avoid fabric deformation due to excessive pressure or weak sewing due to insufficient pressure. The sewing assembly on the second crossbeam, such as the needle, is usually driven by an independent transmission mechanism. The needle makes up-and-down piercing movements to complete the suture piercing.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This utility model discloses an anti-arching sewing mechanism. By setting up a tension adjustment device and using a transmission structure of a first motor driving a worm gear and screw, the auxiliary roller assembly can be moved up and down, thereby dynamically adjusting the tension path length of the material, accurately controlling the material tension, avoiding arching during sewing due to uneven tension, and effectively improving the sewing quality and finished product quality.

[0025] This utility model discloses an anti-arching sewing mechanism. The hydraulic rod on the mounting plate drives the sewing device to move up and down, so that the sewing device can quickly contact the material to perform the sewing action when needed, and quickly detach from the material when changing materials or adjusting the position, which greatly improves the convenience of sewing operation and production efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the anti-arching sewing mechanism of this utility model.

[0027] Figure 2 This is a schematic diagram of the tension adjustment device of the anti-arching sewing mechanism of this utility model.

[0028] Figure 3 This is a top view of the interior of a square box containing an anti-arching sewing mechanism according to this utility model.

[0029] In the diagram: 1. Frame; 2. Tension adjustment device; 3. First support column; 4. Slide groove; 5. Screw; 6. First cross frame; 7. Auxiliary roller; 8. Square box; 9. Worm gear; 10. Worm; 11. First motor; 12. Mounting plate; 13. Hydraulic rod; 14. Sewing device; 15. Fixing frame; 16. Second cross frame; 17. Second support column; 18. Third cross frame; 19. Drive roller; 20. Second motor. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0031] To prevent arching caused by uneven material tension during sewing, and to address the issues of inflexible operation of the sewing device, cumbersome material changes, and position adjustments, thereby improving the appearance quality, practicality, and durability of the sewn products, while also increasing production efficiency, such as... Figure 1 , Figure 2 , Figure 3 As shown, an anti-arching sewing mechanism includes a frame 1. From front to back, the frame 1 is equipped with an active roller assembly, a tension adjusting device 2, and a sewing device 14. The tension adjusting device 2 includes two symmetrical first pillars 3 fixedly connected to the top of the frame 1. A vertically oriented groove 4 is provided inside each first pillar 3. A screw 5 is vertically rotatably connected to the inner wall of the bottom end of the groove 4. An auxiliary roller assembly that moves up and down is provided on the screw 5. A square box 8 is fixedly connected to the top of each first pillar 3. The top of the screw 5 extends through the first pillar 3 into the interior of the square box 8 and is fixedly connected to a worm gear 10. The worm gear 10 is rotatably connected to the inner wall of the square box 8 and meshes with a worm wheel 9. A first motor 11 is fixedly installed on the outer wall of one end of the square box 8. The output shaft of the first motor 11 is coaxially connected to one end of the worm gear 10.

[0032] Two symmetrical mounting plates 12 are fixedly installed at the top of the frame 1. A hydraulic rod 13 is fixedly installed at the top of the mounting plate 12. The top of the hydraulic rod 13 is connected to the sewing device 14.

[0033] In use, after the first motor 11 starts, the output shaft drives the worm 10 to rotate. The worm 10 meshes with the worm wheel 9, transmitting the rotational motion to the screw 5. The screw and the worm wheel are fixed coaxially. When the screw 5 rotates, its threaded structure drives the auxiliary roller assembly to move up and down along the slide groove 4 of the first support column 3. When the auxiliary roller assembly moves down, it increases the tension path length of the material such as fabric, thus increasing the tension. When it moves up, it shortens the path length and reduces the tension. This allows for dynamic control of the material tension by adjusting the roller spacing, preventing arching caused by uneven tension during sewing. The two symmetrical first support columns 3, screw 5, and auxiliary roller assembly move synchronously to ensure consistent tension on both sides of the material, preventing offset or twisting.

[0034] The hydraulic rod 13 on the mounting plate 12 is powered by the hydraulic system to drive the sewing device 14 to move up and down. When it descends, the sewing device, such as the sewing machine needle or presser foot, contacts the material and performs the sewing action. When it rises, it detaches from the material, making it easy to replace the material or adjust the position.

[0035] For example, such as Figure 1 As shown, the present invention also includes two symmetrical second pillars 17 fixedly connected to the top of the frame 1, and the active roller assembly includes a third crossbeam 18 fixedly installed on the top of the two second pillars 17, with an active roller 19 rotatably connected to the inner side of the third crossbeam 18.

[0036] During use, two symmetrical second pillars 17 are fixed to the top of the frame 1 to form a stable support structure, ensuring the installation accuracy and force balance of the active roller assembly, preventing the active roller 19 from shifting due to unilateral force, and ensuring the straightness of the material conveying direction; the third crossbeam 18 is fixed to the top of the second pillars 17 and serves as the mounting carrier for the active roller 19. The active roller 19 is rotatably connected to the inside of the third crossbeam 18 through bearings and can rotate freely around its own axis.

[0037] For example, such as Figure 1 As shown, the present invention also includes a second motor 20 fixedly installed on the upper part of one side of one of the second support columns 17, and the output shaft of the second motor 20 is coaxially connected to one end of the drive roller 19.

[0038] When in use, after the second motor 20 is powered on, the rotor drives the output shaft to rotate. The rotational motion of the output shaft is directly transmitted to the drive roller 19 without any intermediate links, driving it to rotate around the axis.

[0039] For example, such as Figure 2 As shown, the present invention also includes an auxiliary roller assembly comprising a first crossbeam 6 threadedly connected to the outside of the screw 5, the first crossbeam 6 being slidably connected to the slide groove 4.

[0040] In use, the screw 5 is vertically installed in the groove 4 of the first support column 3. The outside of the screw 5 is threaded and mates with the internal threaded hole of the first crossbeam 6 to form a screw transmission mechanism. The two sides of the first crossbeam 6 slide in contact with the inner wall of the groove 4, restricting its rotational freedom and allowing only vertical movement to prevent the crossbeam from rotating due to the rotation of the screw. Since the tension adjustment device contains two symmetrical first support columns 3, the screw 5 in each support column is connected to the corresponding first crossbeam 6 through threads to ensure that the auxiliary rollers on both sides rise and fall synchronously and avoid uneven material stress.

[0041] The first motor 11 drives the worm 10 to rotate. The worm meshes with the worm wheel 9 and transmits the rotational motion to the screw 5. If the worm rotates clockwise, the worm wheel drives the screw to rotate clockwise. Assuming the thread direction is right-handed, the first crossbeam 6 moves upward along the screw. Conversely, when the worm rotates counterclockwise, the first crossbeam moves downward. When the screw rotates, the first crossbeam 6 converts the rotational motion of the screw into vertical linear motion due to the thread transmission and the limiting of the sliding groove.

[0042] For example, such as Figure 2 As shown, the present invention also includes two auxiliary rollers 7 rotatably connected to the inner side of the first cross frame 6, and a channel for the fabric to pass through is opened between the two auxiliary rollers 7.

[0043] In use, two auxiliary rollers 7 are arranged parallel to each other on the inner side of the first crossbeam 6 to form a roller tension adjustment unit. The two rollers are rotatably connected to the crossbeam through bearings and can rotate freely to reduce the friction during fabric conveying. Rolling friction is much less than sliding friction. If the first crossbeam 6 drives the auxiliary rollers to move downward, the curvature of the roller path increases, the fabric is stretched or straightened, and the tension rises. When the auxiliary rollers move upward, the fabric relaxes or the path shortens, and the tension decreases. By controlling the vertical position of the auxiliary rollers, the tension on the fabric can be changed in real time to avoid arching caused by uneven tension.

[0044] For example, such as Figure 1 As shown, the present invention also includes a suture device 14 comprising a fixing frame 15 respectively fixedly installed on the top ends of two hydraulic rods 13, a second crossbeam 16 fixedly connected to the inner side of the fixing frame 15, and a suture assembly provided on the second crossbeam 16.

[0045] In use, two hydraulic rods 13 are vertically fixed on the mounting plate 12 of the frame 1, and the top ends are connected to the fixed frame 15 to form a double-fulcrum lifting mechanism. The hydraulic rods are symmetrically distributed to ensure that the fixed frame 15 is subjected to uniform force when it is raised and lowered, avoids tilting or jamming, and ensures the verticality of the sewing assembly.

[0046] The fixed frame 15, as the actuator of the hydraulic rod, is fixedly connected to the second cross frame 16 by bolts to form a rigid frame. The second cross frame 16 spans the inside of the fixed frame and provides a mounting carrier for sewing components such as sewing machine needles, presser feet, and feed dogs to ensure their positional accuracy.

[0047] When sewing is required, the piston rod of hydraulic rod 13 retracts, pulling the fixed frame 15 and the second cross frame 16 down, so that the sewing assembly contacts the fabric; when sewing is completed or adjustment is required, the piston rod rises, the fixed frame rises, and the sewing assembly detaches from the fabric. The hydraulic system can control the pressure of the sewing assembly on the fabric, such as the downward pressure of the presser foot, by adjusting the oil pressure, so as to avoid the fabric deformation caused by excessive pressure or the sewing not being firm due to insufficient pressure. The sewing assembly on the second cross frame 16, such as the needle, is usually driven by an independent transmission mechanism. The needle makes up and down piercing movements to complete the suture piercing.

[0048] It should be noted that this utility model is an anti-arching sewing mechanism. When the second motor 20 is started, the output shaft directly drives the active roller 19 to rotate, so that the material, such as fabric, is smoothly transported from the front end of the frame to the rear. The symmetrical second support column 17 and the third cross frame 18 ensure that the active roller is installed stably and avoids deviation during material transportation.

[0049] The first motor 11 starts, driving the worm gear 10 to rotate. Through the meshing worm wheel 9, the worm gear 5 rotates. The threaded structure of the worm gear 5 drives the first crossbeam 6 to move up and down along the slide groove 4. The threaded transmission and slide groove limit prevent the crossbeam from rotating. When the auxiliary roller 7 moves down, the material tensioning path becomes longer and the tension increases. When the auxiliary roller moves up, the path shortens and the tension decreases. The first support column, worm gear and auxiliary roller on both sides move synchronously to ensure that the tension on both sides of the material is consistent and to prevent deviation or twisting.

[0050] The hydraulic rod 13 drives the fixed frame 15 and the second cross frame 16 to move up and down through the hydraulic system: Downward: The sewing components such as needles and presser feet come into contact with the material. The hydraulic system can adjust the presser foot pressure to avoid fabric deformation or poor sewing. Upward: After sewing is completed, the sewing components are separated from the material, which makes it easy to replace the material or adjust the position.

[0051] The suture components, such as the needle, are driven by an independent transmission mechanism to perform up-and-down puncture movements, completing the suture puncture and achieving material suturing.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A stitch prevention mechanism against tenting comprising a frame (1), characterized in that, The frame (1) is provided with an active roller assembly, a tension adjustment device (2) and a sewing device (14) in sequence from front to back. The tension adjustment device (2) includes two symmetrical first pillars (3) fixedly connected to the top of the frame (1). A slide groove (4) is vertically opened in the first pillar (3). A screw (5) is vertically rotatably connected to the inner wall of the bottom end of the slide groove (4). An auxiliary roller assembly that moves up and down is provided on the screw (5). A square box (8) is fixedly connected to the top of the first pillar (3). The top of the screw (5) extends through the first pillar (3) into the interior of the square box (8) and is fixedly connected to a worm (10). The worm (10) is rotatably connected to the inner wall of the square box (8). The worm (10) meshes with a worm wheel (9). A first motor (11) is fixedly installed on the outer wall of one end of the square box (8). The output shaft of the first motor (11) is coaxially connected to one end of the worm (10). Two symmetrical mounting plates (12) are fixedly installed at the top of the frame (1), and a hydraulic rod (13) is fixedly installed at the top of the mounting plate (12). The top of the hydraulic rod (13) is connected to the sewing device (14).

2. The anti-arching sewing mechanism according to claim 1, characterized in that: The top of the frame (1) is fixedly connected to two symmetrical second pillars (17), and the active roller assembly includes a third crossbeam (18) fixedly installed on the top of the two second pillars (17), and an active roller (19) is rotatably connected to the inner side of the third crossbeam (18).

3. The anti-arching sewing mechanism according to claim 2, characterized in that: A second motor (20) is fixedly installed on the upper side of one of the second support columns (17), and the output shaft of the second motor (20) is coaxially connected to one end of the drive roller (19).

4. The anti-arching sewing mechanism according to claim 1, characterized in that: The auxiliary roller assembly includes a first crossbeam (6) threaded to the outside of the screw (5), and the first crossbeam (6) is slidably connected to the slide groove (4).

5. The anti-arching stitching mechanism according to claim 4, characterized in that: The inner side of the first cross frame (6) is rotatably connected to two auxiliary rollers (7), and a channel for the fabric to pass through is opened between the two auxiliary rollers (7).

6. The anti-arching stitching mechanism according to claim 1, characterized in that: The suturing device (14) includes a fixing frame (15) fixedly installed on the top of two hydraulic rods (13), and a second crossbeam (16) is fixedly connected to the inner side of the fixing frame (15), and a suturing assembly is provided on the second crossbeam (16).

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