Auxiliary fabric straightening structure of serger

Abstract

The utility model relates to an overlocking machine fabric auxiliary straightening structure which comprises a machine frame, a feeding table arranged on the machine frame, an overlocking machine arranged on the feeding table, a sliding rail arranged on the feeding table on the feeding side of the overlocking machine, a first sliding block arranged on the sliding rail, a second sliding block arranged over the first sliding block, a guide hole vertically formed in the second sliding block, and a second sliding block arranged over the guide hole. A guide column is arranged on the upper end face of the first sliding block and penetrates through the guide hole, a fixing base is arranged at the upper end of the guide column, the guide column between the fixing base and the second sliding block is sleeved with a spring, the two ends of the spring are fixed to the fixing base and the second sliding block respectively, and an electromagnet is arranged on the upper end face of the second sliding block. A first insertion hole is formed in the upper side of the end, away from the overlocking machine, of the sliding rail, a positioning rod is inserted into the first insertion hole, a fixed pulley is arranged at the edge of the feeding table at the end, a traction rope is arranged on the first sliding block, and a balancing weight is arranged at the end of the traction rope after the traction rope bypasses the fixed pulley.

Description

Technical Field

[0001] The utility model relates to the technical field of overlocking, in particular to a fabric auxiliary straightening structure of an overlocking machine. Background Art

[0002] Overlocking, also known as lock edge, is a term in the clothing industry. It refers to using an overlocking machine to overlock the edge of the fabric so that the silk threads at the cut part of the fabric are not easy to unravel, and at the same time it has the effect of beautifying the cut part of the fabric.

[0003] The overlock machine in the related technology is provided with a feed table, and the overlock machine is also provided with a feed shaft and a feed dog. The feed shaft and the feed dog are connected by a feed crank transmission. The feed shaft is rotated to drive the feed dog to swing back and forth through the feed crank. The feed dog is located directly below the needle bar of the overlock machine. When overlocking, the fabric is first laid on the feed table, and the cut edge of the fabric is placed under the needle bar. The overlock machine is started, and the needle bar and feed shaft of the overlock machine move. While the needle bar overlocks the fabric, the feed dog pushes the fabric to move in a straight line, and the cut edge of the fabric is overlocked through the cooperation between the needle bar and the feed dog.

[0004] This process requires manual straightening of the sides of the garments, and workers are required to maintain consistency in the straightening force during the feeding process. However, in the actual production process, inconsistent proficiency often leads to inconsistent straightening force and uneven hemming. Utility Model Content

[0005] In order to solve the above technical deficiencies, the utility model provides a fabric auxiliary straightening structure for an overlocking machine, which can stably straighten the fabric and ensure the uniformity of the overlocking.

[0006] The utility model discloses an auxiliary fabric straightening structure for an overlock sewing machine, which comprises a frame. A feeding table is arranged on the frame, and an overlock sewing machine is arranged on the feeding table. A slide rail is arranged on the feeding table on the feeding side of the overlock sewing machine. One end of the slide rail is in contact with the overlock sewing machine, and the slide rail is parallel to the feeding direction. A first slider is slidably arranged on the slide rail. A second slider is arranged directly above the first slider. A plurality of guide holes are vertically arranged on the second slider. Guide posts are arranged at the positions corresponding to the guide holes on the upper end face of the first slider. The guide posts pass through the guide holes. A fixed seat is arranged at the upper end of the guide posts. A spring is sleeved on the guide posts between the fixed seat and the second slider. The upper end of the spring is fixed to the fixed seat, and the lower end of the spring is fixed to the second slider. An electromagnet is arranged on the upper end face of the second slider. It should be noted here that both the first slider and the second slider are made of ferromagnetic materials, and the slide rail is made of non-ferromagnetic materials. A first clip is horizontally arranged at the upper end of one side of the first slider, and a second clip is horizontally arranged at the lower end of the second slider on the same side. A first jack is arranged on the upper side of the end of the slide rail far from the overlock sewing machine. A positioning rod is inserted into the first jack, and a fixed pulley is arranged at the edge of the feeding table at this end. A traction rope is arranged at the end of the first slider close to the fixed pulley. The traction rope bypasses the fixed pulley and then hangs down, and a counterweight is arranged at the hanging end. The electromagnet is connected to a controller.

[0007] When in use, one end of the fabric is fed into the overlock sewing machine, and then the other end of the fabric is placed between the first clip and the second clip. The controller is used to control the electromagnet to be energized, so that the first slider and the second slider attract each other, thereby clamping the fabric by the first clip and the second clip. During the process of the overlock sewing machine overlocking the edge of the fabric, the counterweight pulls the first slider to straighten the fabric. And because the gravity of the counterweight remains unchanged, the straightening force applied to the fabric is good in consistency.

[0008] In order to facilitate the timely release of the fabric by the first clip and the second clip when the overlocking of the fabric is completed, a limit switch is arranged on the upper side of the end of the slide rail close to the overlock sewing machine. The limit switch is electrically connected to the controller. When the first slider contacts the limit switch, the controller controls the electromagnet to be powered off according to the electrical signal of the limit switch, so as to release the fabric in time.

[0009] In order to facilitate the control of the clamping of the fabric by the first clip and the second clip, an installation hole is arranged on the first clip, and a button facing upward is installed on the installation hole. The button is electrically connected to the controller. When the fabric is placed between the first clip and the second clip, the fabric is pressed downward on the button, and the controller controls the electromagnet to be energized according to the electrical signal of the button, so that the first clip and the second clip clamp the fabric.

[0010] In order to facilitate the clamping of fabrics of different lengths, a plurality of second jacks are arranged at intervals along the length direction on the upper end face of the slide rail. The position of the first slider is limited by inserting the positioning rod into different second jacks, so as to clamp fabrics of different lengths.

[0011] An auxiliary fabric straightening structure for an overlock sewing machine obtained by the present utility model has the beneficial effects that the fabric is first clamped by the first clamping piece and the second clamping piece, and during the process of overlocking the edge of the fabric by the overlock sewing machine, the first sliding block is pulled by the counterweight to straighten the fabric. Since the gravity of the counterweight remains unchanged, the straightening force applied to the fabric is good in consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The front view of Embodiment 1 of the present utility model;

[0013] Figure 2 In Embodiment 1 of the present utility model Figure 1 The partial enlarged view;

[0014] Figure 3 The top view of Embodiment 1 of the present utility model;

[0015] Figure 4 In Embodiment 1 of the present utility model Figure 3 The partial enlarged view. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following describes in detail the specific embodiments, structures, features, and effects according to the present utility model in combination with the accompanying drawings and preferred embodiments.

[0017] Embodiment 1:

[0018] As Figure 1 , 2, as shown in Figures 3 and 4, the present utility model discloses an auxiliary fabric straightening structure for an overlock sewing machine, which includes a frame 1. A feeding table 2 is arranged on the frame 1, and an overlock sewing machine 3 is arranged on the feeding table 2. A slide rail 5 is arranged on the feeding table 2 on the feeding side of the overlock sewing machine 3. One end of the slide rail 5 is in contact with the overlock sewing machine 3, and the slide rail 5 is parallel to the feeding direction. A first slider 7 is slidably arranged on the slide rail 5. A second slider 14 is arranged directly above the first slider 7. A plurality of guide holes are vertically arranged on the second slider 14. Guide posts 15 are arranged at positions corresponding to the guide holes on the upper end face of the first slider 7. The guide posts 15 pass through the guide holes. A fixed seat 12 is arranged at the upper end of the guide posts 15. A spring 11 is sleeved on the guide posts 15 between the fixed seat 12 and the second slider 14. The upper end of the spring 11 is fixed to the fixed seat 12, and the lower end of the spring 11 is fixed to the second slider 14. An electromagnet 13 is arranged on the upper end face of the second slider 14. It should be noted here that both the first slider 7 and the second slider 14 are made of ferromagnetic materials, and the slide rail 5 is made of non-ferromagnetic materials. A first clip 8 is horizontally arranged at the upper end of one side of the first slider 7, and a second clip 10 is horizontally arranged at the lower end of the second slider 14 on the same side. A first jack is arranged on the upper side of the end of the slide rail 5 away from the overlock sewing machine 3. A positioning rod 16 is inserted into the first jack, and a fixed pulley 17 is arranged at the edge of the feeding table 2 at this end. A traction rope 18 is arranged at the end of the first slider 7 close to the fixed pulley 17. The traction rope 18 bypasses the fixed pulley 17 and then hangs down. A counterweight 6 is arranged at the hanging end. The electromagnet 13 is connected to a controller.

[0019] During use, one end of the fabric is fed into the overlock sewing machine 3, and then the other end of the fabric is placed between the first clip 8 and the second clip 10. The controller is used to control the electromagnet 13 to be energized, so that the first slider 7 and the second slider 14 attract each other, thereby clamping the fabric with the first clip 8 and the second clip 10. During the process of the overlock sewing machine 3 overlocking the edge of the fabric, the counterweight 6 pulls the first slider 7 to straighten the fabric. And because the gravity of the counterweight 6 remains unchanged, the straightening force applied to the fabric is good in consistency.

[0020] In order to facilitate the timely release of the fabric by the first clip 8 and the second clip 10 when the fabric overlocking is completed, a limit switch 4 is arranged on the upper side of the end of the slide rail 5 close to the overlock sewing machine 3. The limit switch 4 is electrically connected to the controller. When the first slider 7 contacts the limit switch 4, the controller controls the electromagnet 13 to be powered off according to the electrical signal of the limit switch 4, so as to release the fabric in time.

[0021] In order to facilitate the control of the clamping of the fabric by the first clip 8 and the second clip 10, an installation hole is arranged on the first clip 8, and an upward button 9 is installed on the installation hole. The button 9 is electrically connected to the controller. When the fabric is placed between the first clip 8 and the second clip 10, the fabric is pressed downward on the button 9, and the controller controls the electromagnet 13 to be energized according to the electrical signal of the button 9, so that the first clip 8 and the second clip 10 clamp the fabric.

[0022] To facilitate the clamping of fabrics of different lengths, a number of second jacks 19 are arranged at intervals along the length direction on the upper end surface of the sliding rail 5. By inserting the positioning rod 16 into different second jacks 19, the position of the first slider 7 is defined, so as to clamp fabrics of different lengths.

[0023] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0024] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0025] In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0026] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes within the scope of the technical solution of the present utility model by using the above-disclosed technical content. However, as long as it does not depart from the content of the technical solution of the present utility model, any simplified modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An auxiliary fabric straightening structure for an overlock sewing machine, characterized in that It includes a frame (1), a feeding table (2) is arranged on the frame (1), an overlock sewing machine (3) is arranged on the feeding table (2), a slide rail (5) is arranged on the feeding table (2) on the feeding side of the overlock sewing machine (3), one end of the slide rail (5) is in contact with the overlock sewing machine (3), the slide rail (5) is parallel to the feeding direction, a first slider (7) is slidably arranged on the slide rail (5), a second slider (14) is arranged directly above the first slider (7), a plurality of guide holes are vertically arranged on the second slider (14), guide posts (15) are arranged at positions corresponding to the guide holes on the upper end face of the first slider (7), the guide posts (15) pass through the guide holes, a fixing seat (12) is arranged at the upper end of the guide posts (15), a spring (11) is sleeved on the guide posts (15) between the fixing seat (12) and the second slider (14), the upper end of the spring (11) is fixed to the fixing seat (12), the lower end of the spring (11) is fixed to the second slider (14), an electromagnet (13) is arranged on the upper end face of the second slider (14), a first clip (8) is horizontally arranged at the upper end of one side of the first slider (7), a second clip (10) is horizontally arranged at the lower end of the second slider (14) on the same side, a first jack is arranged on the upper side of the end of the slide rail (5) far from the overlock sewing machine (3), a positioning rod (16) is inserted into the first jack, and a fixed pulley (17) is arranged at the edge of the feeding table (2) at this end, a towing rope (18) is arranged at the end of the first slider (7) close to the fixed pulley (17), the towing rope (18) bypasses the fixed pulley (17) and then hangs down, and a counterweight (6) is arranged at the hanging end. The electromagnet (13) is connected to a controller.

2. The auxiliary fabric straightening structure of an overlock sewing machine according to claim 1, wherein, A limit switch (4) is arranged on the upper side of the end of the slide rail (5) close to the overlock sewing machine (3), and the limit switch (4) is electrically connected to the controller.

3. The auxiliary fabric straightening structure of an overlock sewing machine according to claim 2, wherein An installation hole is arranged on the first clip (8), and a button (9) facing upward is installed on the installation hole. The button (9) is electrically connected to the controller.

4. An auxiliary fabric straightening structure for an overlock sewing machine according to claim 3, characterized in that, A plurality of second jacks (19) are arranged at intervals along the length direction on the upper end face of the slide rail (5).

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