Fabric side slit overlock machine

Abstract

The utility model discloses a fabric side cutting line overedger, including machine table, be equipped with overedging device on this machine table, still fixedly equipped with the mounting bracket of symmetrical distribution on the machine table, be provided with mounting piece on this mounting bracket, and open mounting groove on the mounting bracket of user seat one side, be provided with the conveying roller on mounting piece, be provided with the driving handle on the mounting bracket, this driving handle articulates in mounting groove, still be provided with the power handle in the mounting groove, one end of this power handle articulates in driving handle, and the both sides of the other end all articulate a group of power handle, and the upper portion of power handle articulates in mounting bracket, and the lower portion articulates in mounting piece. In the utility model, through driving handle, power handle, power handle forms a set of lever system to realize the labor -saving, convenient, fast adjustment of conveying roller height, and then significantly reduces operator labor intensity, and through the accurate control to conveying roller height, optimized the conveying stability of overedging process edge fabric, thereby finally promotes overedging quality and overall working efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fabric sewing equipment technology, and in particular to a fabric side-cutting overlock sewing machine. Background Technology

[0002] The fabric side-cutting and overlocking sewing machine is an industrial sewing equipment that integrates automatic edge cutting and overlocking functions. It is mainly used to process the raw edges of fabrics and simultaneously complete the stitch covering, thereby improving sewing efficiency and quality.

[0003] Existing overlock sewing machines feed fabric by hand when binding the edges. However, this method of feeding fabric requires the operator to maintain the same posture for a long time, which can easily lead to fatigue and soreness after long hours of work. It can also cause wrinkles due to the inability to feed the fabric in time, affecting work efficiency. Furthermore, if the operator is not focused, their hands are easily cut by the needle, posing a safety hazard. Utility Model Content

[0004] The purpose of this invention is to provide a fabric side-cutting overlock sewing machine to solve the above-mentioned problems.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides a fabric side-cut overlock sewing machine, including a machine base with an overlock sewing device. The machine base is also fixed with symmetrically distributed mounting frames. Mounting components are mounted on the mounting frames and can move up and down. The mounting frame facing the user's seat has a mounting groove. A conveying roller is rotatably mounted on the mounting component. A drive handle is mounted on the mounting frame and is hinged to the mounting groove. An assist handle is also mounted in the mounting groove. One end of the assist handle is hinged to the drive handle, and both sides of the other end are hinged to a set of power handles. The upper part of the power handle is hinged to the mounting frame, and the lower part is hinged to the mounting component.

[0007] In one embodiment, each set of power handles includes an identical upper handle and a lower handle, one end of the upper handle being hinged to the assist handle and the other end being hinged to the mounting bracket above the mounting member, one end of the lower handle being hinged to the assist handle and movably abutting against the upper handle, and the other end being hinged to the mounting member.

[0008] In one embodiment, the drive handle includes a long handle and a short handle that are fixedly connected to each other. The connection between the long handle and the short handle is hinged to a mounting groove, and the end of the short handle away from the long handle is hinged to an assist handle, while the long handle extends outward.

[0009] In one embodiment, the angle formed by the connection of the long handle and the short handle is an acute angle.

[0010] In one embodiment, the mounting bracket is further provided with a stop and a limiting member. One end of the limiting member is fixed to the mounting bracket. The stop has a through hole for engaging the limiting member. When the end of the long handle away from the short handle is at its highest point, the stop is fixed to the mounting bracket by connecting the limiting member, and at this time the stop abuts against the bottom of the long handle.

[0011] In one embodiment, a slide rail is fixed on one side of each of the two mounting brackets, and the two sides of the mounting member are slidably embedded in the slide rail.

[0012] The advantages or beneficial effects of the above technical solutions include at least the following:

[0013] In this invention, a lever system is formed by a drive handle, an assist handle, and a power handle. When the drive handle is moved up and down, as each component rotates around the hinge point, the power handle eventually drives the mounting part to move up and down, thereby achieving labor-saving, convenient, and rapid adjustment of the conveyor roller height. This significantly reduces the operator's labor intensity. Furthermore, by precisely controlling the height of the conveyor roller, the conveying stability of the edge fabric during the overlocking process is optimized, ultimately improving the overlocking quality and overall work efficiency. Attached Figure Description

[0014] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0015] Figure 1 This is a three-dimensional structural diagram of the external structure of the machine tool in this utility model.

[0016] Figure 2 for Figure 1 Enlarged schematic diagram of the structure of section A in the middle.

[0017] Figure 3 This is a schematic diagram of the planar structure of a partially cut section of the machine tool in this utility model.

[0018] Reference numerals in the attached drawings: 1. Machine base; 2. Overlocking device; 3. Mounting frame; 4. Mounting component; 5. Conveyor roller; 6. Drive handle; 601. Long handle; 602. Short handle; 7. Mounting groove; 8. Assist handle; 9. Power handle; 901. Upper handle; 902. Lower handle; 10. Stop; 11. Limiting component; 12. Slide rail. Detailed Implementation

[0019] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0020] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0022] It should be noted that the terms "a" and "a plurality of" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0023] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0024] Reference Figures 1-3A fabric side-cut overlock sewing machine includes a machine base 1, on which an overlock sewing device 2 is mounted. Symmetrically distributed mounting frames 3 are also fixed on the machine base 1. Mounting components 4 are movably mounted on the mounting frames 3, and a mounting groove 7 is formed on the side of the mounting frame 3 facing the user's seat. A conveyor roller 5 is rotatably mounted on the mounting component 4, and a motor for driving the conveyor roller 5 is provided. The motor is fixedly mounted on the mounting component 4. A drive handle 6 is provided on the mounting frame 3, and the drive handle 6 is hinged to the mounting groove 7. An assist handle 8 is also provided in the mounting groove 7. One end of the assist handle 8 is hinged to the drive handle 6, and both sides of the other end are hinged to power handles 9. The upper part of the power handle 9 is hinged to the mounting frame 3, and the lower part is hinged to the mounting component 4. With this configuration, when the fabric needs to be conveyed, the operator holds the drive handle 6 and moves it from top to bottom. Since one end of the drive handle 6 is a hinge point and fixed in the mounting groove 7, at this time… The drive handle 6, acting as the active arm of the lever, rotates around the hinge point. The rotation of the drive handle 6 causes one end of the assist handle 8, which is hinged to it, to move. Thus, the assist handle 8, acting as a transmission element, transmits the movement of this end to the other end, namely the power handle 9. When the assist handle 8 pulls or pushes the power handle 9, the power handle 9 begins to rotate around the upper hinge point. The movement of the other end of the power handle 9 is then converted into an upward or downward force applied to the mounting component 4 through the lower hinge point, driving the mounting component 4 to move smoothly up or down along the mounting frame 3. At this time, the up and down movement of the mounting component 4 directly drives the conveyor roller 5 on it to move up and down synchronously. In this way, the operator can easily adjust the conveyor roller 5 to the required working height by operating the drive handle 6. When the overlock sewing device 2 is working, the edge of the fabric will naturally enter below the conveyor roller 5. The freely rotating conveyor roller 5 provides a smooth and uniform forward conveying auxiliary force for the edge of the fabric.

[0025] In one specific embodiment, the power handle 9 is a lever, with its fulcrum being the hinge point between its upper end and the mounting bracket 3, its resistance point being the hinge point between its lower end and the mounting component 4, and its force point being the position where the assist handle 8 applies force. Since the distance from the force point to the fulcrum is significantly greater than the distance from the resistance point to the fulcrum, the power handle 9 can amplify the force transmitted by the operator through the drive handle 6 and the assist handle 8. Therefore, only a small force needs to be applied to the drive handle 6 to generate a large force at the lower end of the power handle 9. Thus, the operator can press or pull the fabric with one hand and easily control the conveyor roller 5 to move up and down by operating the drive handle 6 with the other hand.

[0026] During the above operation, the lever system effectively amplifies the force applied by the operator, making it easier to lift or lower the heavy mounting component 4 and conveyor roller 5. This avoids the operator having to lift or press the components directly, greatly reducing labor intensity. Moreover, the operator can easily and quickly adjust the height of the conveyor roller 5 without using tools or complicated steps, effectively improving efficiency. At the same time, the position of the drive handle 6 is ergonomic, allowing the operator to easily reach and operate it from the workstation without having to frequently get up to make large adjustments. The hands pulling the fabric can also be further away from the stitches of the overlock sewing device 2, greatly improving comfort and safety during the sewing process.

[0027] The adjustable-height conveyor roller 5 can always provide support and conveying force in the appropriate position, ensuring that the fabric is conveyed forward stably and evenly. This reduces problems such as uneven stitching, skipped stitches, and uneven edge binding caused by fabric wrinkles, skewing, or pulling during the feeding process, significantly improving the quality and aesthetics of the overlock stitches. Furthermore, the height of the conveyor roller 5 can be easily adjusted for fabrics of different thicknesses, ensuring that it always fits the fabric to provide the best auxiliary feeding effect, avoiding overpressure or suspension. The reasonable height of the conveyor roller 5 and the light pressure contact can effectively convey the fabric while avoiding excessive squeezing or damage to the relatively fragile edges of the fabric, and reducing the risk of the fabric being stretched and deformed.

[0028] Reference Figure 2 and Figure 3 Each set of power handles 9 includes an identical upper handle 901 and lower handle 902. One end of the upper handle 901 is hinged to the auxiliary handle 8, and the other end is hinged to the mounting bracket 3 above the mounting component 4. One end of the lower handle 902 is hinged to the auxiliary handle 8 and can movably abut against the upper handle 901, while the other end is hinged to the mounting component 4. With this configuration, when the operator operates the drive handle 6, the force is transmitted through the auxiliary handle 8. The auxiliary handle 8 simultaneously pulls or pushes the common end of the upper handle 901 and the lower handle 902. Since one end of the upper handle 901 is driven by the auxiliary handle 8, and the other end is hinged to the top of the fixed mounting bracket 3, when the auxiliary handle 8 moves... The upper handle 901 begins to swing around its top fulcrum to act as a controllable support arm. Similarly, the lower handle 902 begins to move around its bottom hinge point with the mounting member 4 when the assist handle 8 moves. During the lifting and lowering process, the movement trajectory of the lower handle 902 will naturally cause its rod body to contact the rod body of the upper handle 901 at different positions. When the mounting member 4 needs to be lowered, the upper handle 901 swings backward and the lower handle 902 swings downward. When the mounting member 4 needs to be raised, the upper handle 901 is pulled forward by the assist handle 8 and swings forward. At the same time, the lower handle 902 is also pulled upward. However, due to the different connection points, its rod body will gradually abut against the rod body of the upper handle 901.

[0029] In one specific embodiment, when the mounting component 4 begins to rise from its lower position, the lower handle 902 abuts against the upper handle 901. At this time, the upper handle 901 and the lower handle 902 form a temporary, rigid, strong support structure at the contact point. The hinge point of the top of the upper handle 901 on the mounting frame 3 becomes the fulcrum of the entire secondary lever, designated as point A. The common connection point of the assist handle 8 acting on the upper handle 901 and the lower handle 902 becomes the force point, designated as point B. The hinge point between the bottom of the lower handle 902 and the mounting component 4 becomes the resistance point, designated as point C. The distance from the force point B to the fulcrum A is significantly greater than the distance from the resistance point C to the fulcrum A. According to the lever principle, a smaller force acting on the force point B can generate a larger force at the resistance point C to lift the heavy mounting component 4 and the conveyor roller 5, allowing the operator to easily control the up and down movement of the mounting component 4.

[0030] During the above operation, when the conveyor roller 5 is in the working position where the fabric needs to be supported, the lower handle 902 will firmly abut against the upper handle 901, forming a solid triangular or near-triangular support structure. The upper handle 901 effectively transfers the load borne by the mounting component 4 to the sturdy mounting frame 3. This significantly reduces the possibility of the mounting component 4 bending, sinking, or shaking when under load, ensuring the precise maintenance of the height of the conveyor roller 5 and the stability of its movement, thereby improving the smoothness of the conveyed fabric and the quality of the overlock stitch. At the same time, the upper handle 901 mainly plays a guiding and final support role, while the lower handle 902 is mainly responsible for directly driving the mounting component 4. Due to the specific connection point and abutment relationship, the movement of the two makes the lifting trajectory of the mounting component 4 smoother and more controllable. At the end of the upward stroke, the limiting function of the upper handle 901 can also assist in precise positioning. The overall adjustment process is smooth, the gear feel may be clearer, and the user experience is improved.

[0031] In one specific embodiment, the identical upper handle 901 and lower handle 902 design simplifies manufacturing, procurement, and maintenance. The upper handle 901 is key to transmitting driving force during lifting and bears the main pressure and bending moment when under load. The lower handle 902 bears the driving force during lifting and bears the main pressure when under load. This division of labor avoids concentrating all the load on a single rod and its single hinge point, reduces the stress on key components, and improves the rigidity and durability of the entire mechanism. The stable support and greater lifting force enable the mechanism to more reliably adapt to the conveying needs of fabrics of different thicknesses, ensuring that the conveyor roller 5 operates under appropriate pressure without easily sinking.

[0032] Reference Figure 2 and Figure 3The drive handle 6 includes a long handle 601 and a short handle 602 fixedly connected to each other. The connection between the long handle 601 and the short handle 602 is hinged to the mounting groove 7, and the end of the short handle 602 away from the long handle 601 is hinged to the assist handle 8. The long handle 601 extends outward. With this configuration, the operator holds the outwardly extending end of the long handle 601 and performs an upward lifting or downward pressing operation. Since the connection point between the long handle 601 and the short handle 602 is hinged and fixed in the mounting groove 7, the operator applies pressure to the long handle 601. The force at the end of the drive handle 6 will cause the entire drive handle 6 to rotate around the fulcrum. The long handle 601 acts as a longer lever arm, and the short handle 602 acts as a relatively shorter resistance arm. According to the lever principle, the end of the short handle 602 can significantly amplify the force input at the end of the long handle 601. Then, through the hinge point between the short handle 602 and the assist handle 8, the assist handle 8 is pushed or pulled to move. The movement of the assist handle 8 will drive the power handle 9, which is hinged to it, and finally push the mounting part 4 to move the conveyor roller 5 up and down to complete the height adjustment.

[0033] In one embodiment, lifting the end of the long handle 601 upwards: the drive handle 6 rotates clockwise around the fulcrum, and the short handle 602 pulls the assist handle 8 downwards, which typically drives the mounting member 4 to rise; pressing the end of the long handle 601 downwards: the drive handle 6 rotates counterclockwise around the fulcrum, and the short handle 602 pushes the assist handle 8 upwards, which typically drives the mounting member 4 to fall.

[0034] Reference Figure 3 The angle formed by the connection between the long handle 601 and the short handle 602 is an acute angle. This design, in the retracted or initial position of the drive handle 6, allows the long handle 601 to be closer to the machine body plane, while the short handle 602 extends rearward or inward to connect to the assist handle 8. This configuration significantly reduces the space occupied by the drive handle 6 protruding towards the operator or sides when not in operation, avoiding potential collisions or interference with the operator's legs, body, or other tools. When the operator needs to operate, simply lifting the long handle 601 initiates an efficient operating stroke. Furthermore, the slightly raised handle position in the initial position is more ergonomic, resulting in a more natural operating posture and a smoother, more intuitive lifting motion. This ensures that the drive handle 6 is in a lever state with maximum effort reduction during the initial adjustment phase. The operator experiences minimal resistance when initially lifting the long handle 601, greatly reducing the operating force required to initiate adjustment and improving ease of use and control.

[0035] Reference Figure 2 and Figure 3The mounting frame 3 is also equipped with a stop 10 and a limiting member 11. One end of the limiting member 11 is fixed to the mounting frame 3. The stop 10 has a through hole for engaging the limiting member 11. When the end of the long handle 601 away from the short handle 602 is at its highest position, the stop 10 is fixed to the mounting frame 3 by connecting the limiting member 11. At this time, the stop 10 abuts against the bottom of the long handle 601. With this setting, when the end of the long handle 601 is at its highest position, the conveying roller 5 is also at its highest position. At this time, the stop 10 is inserted into the limiting member 11 along the through hole, so that the stop 10 is fixed below the long handle 601, thereby preventing the long handle 601 from falling down, so as to keep the conveying roller 5 at a high position and avoid damage caused by the conveying roller 5 continuously pressing on the table surface of the machine when it is not needed due to its own weight and the weight of the mounting member 4.

[0036] Reference Figure 1 and Figure 3 A slide rail 12 is fixed on one side of each of the two mounting brackets 3. The two sides of the mounting component 4 are slidably embedded in the slide rail 12. With this configuration, the vertical force on the mounting component 4 drives it to move vertically up and down along the path defined by the slide rail 12. The slide rail 12 and the sliding structure restrict the mounting component 4 to move only in the vertical direction, eliminating any degree of freedom in the horizontal direction and the possibility of rotation around any axis. The rigid structure of the slide rail 12 and the mounting bracket 3, together with the sliding embedded structure on both sides of the mounting component 4, bear the weight of the mounting component 4 itself, the weight of the conveying roller 5 on it, and the operating force and working load transmitted to the mounting component 4 by the entire lever system. This working load is evenly transmitted to the fixed mounting brackets 3 on both sides through the sliding contact surface, and finally to the base machine 1.

[0037] During the aforementioned operation, the slide rail 12 system forces the mounting component 4 to move only along a precise vertical trajectory, ensuring that its movement trajectory is strictly vertical when adjusting the height of the conveyor roller 5. This avoids left-right swaying, back-and-forth rocking, or tilting, ensuring adjustment accuracy. The operator can precisely position the conveyor roller 5 at the required height, which is crucial for maintaining the stability of the relative position of the stitch and the fabric edge. At the same time, the symmetrical slide rail 12 structure on both sides provides extremely robust rigid support, effectively bearing the mounting component 4, the conveyor roller 5, the power handle 9, and the working load on them. When sewing at high speed or handling thick fabrics, it effectively resists lateral forces or torsional loads, eliminating any swaying, sagging, skew, or twisting of the conveyor roller 5 during operation. This is crucial for ensuring high-quality, uniform stitches.

[0038] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 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.

[0039] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A fabric side-cut overlock sewing machine, comprising a machine base (1) on which an overlock sewing device (2) is provided, characterized in that: The machine base (1) is also fixed with symmetrically distributed mounting frames (3). Mounting components (4) are mounted on the mounting frames (3) and can move up and down. Mounting slots (7) are opened on the mounting frames (3) facing the user's seat. Conveying rollers (5) are rotatably mounted on the mounting components (4). A drive handle (6) is provided on the mounting frame (3). The drive handle (6) is hinged to the mounting slot (7). An assist handle (8) is also provided in the mounting slot (7). One end of the assist handle (8) is hinged to the drive handle (6), and a set of power handles (9) are hinged to both sides of the other end. The upper part of the power handle (9) is hinged to the mounting frame (3), and the lower part is hinged to the mounting component (4).

2. The fabric side-cutting overlock sewing machine according to claim 1, characterized in that: Each set of power handles (9) includes an identical upper handle (901) and lower handle (902). One end of the upper handle (901) is hinged to the assist handle (8), and the other end is hinged to the mounting bracket (3) above the mounting member (4). One end of the lower handle (902) is hinged to the assist handle (8) and can movably abut against the upper handle (901), and the other end is hinged to the mounting member (4).

3. The fabric side-cutting overlock sewing machine according to claim 1, characterized in that: The drive handle (6) includes a long handle (601) and a short handle (602) that are fixedly connected to each other. The connection between the long handle (601) and the short handle (602) is hinged to the mounting groove (7), and the end of the short handle (602) away from the long handle (601) is hinged to the assist handle (8). The long handle (601) extends outward.

4. A fabric side-cutting overlock sewing machine according to claim 3, characterized in that: The angle formed by the connection of the long handle (601) and the short handle (602) is an acute angle.

5. A fabric side-cutting overlock sewing machine according to claim 3, characterized in that: The mounting bracket (3) is also provided with a stop (10) and a limiting member (11). One end of the limiting member (11) is fixed to the mounting bracket (3). The stop (10) has a through hole for fitting the limiting member (11). When the end of the long handle (601) away from the short handle (602) is at its highest point, the stop (10) is fixed to the mounting bracket (3) by connecting the limiting member (11), and at this time the stop (10) abuts against the bottom of the long handle (601).

6. A fabric side-cutting overlock sewing machine according to claim 1, characterized in that: The two mounting brackets (3) are fixedly provided with slide rails (12) on opposite sides, and the two sides of the mounting component (4) are slidably embedded in the slide rails (12).

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