Double-edge serger

Abstract

The utility model discloses a double-edge overlocking machine which comprises a bottom frame and a side frame, the side frame is arranged at the position, close to the side face, of the top of the bottom frame, a wire coil and a threading frame are arranged on the side frame, the wire coil is located under the threading frame, and a front hand overlocking machine body and a back hand overlocking machine body are arranged at the top of the bottom frame. The front hand overlocking machine body and the back hand overlocking machine body are arranged, the front hand overlocking machine body and the back hand overlocking machine body conduct synchronous overlocking on the two sides of cloth at the same time, the overlocking effect is improved, the sliding rail, the transmission connecting rod and the stabilizing rod are arranged, the sliding rail is used for controlling the distance between the front hand overlocking machine body and the back hand overlocking machine body, and therefore the overlocking effect is improved. And the stabilizing rod and the transmission connecting rod are matched with the distance between the front hand overlocking machine body and the back hand overlocking machine body through the telescopic function of the stabilizing rod and the transmission connecting rod, so that the stability of the front hand overlocking machine body and the back hand overlocking machine body is improved.

Description

Technical Field

[0001] This utility model relates to the field of overlock machine technology, and in particular to a double-sided overlock machine. Background Technology

[0002] Overlock machines, also known as sergers, are very important pieces of equipment in the textile and garment manufacturing industry. They are mainly used to sew the edges of fabrics to prevent fraying and rough edges, and also to enhance the appearance of the fabrics.

[0003] In the operation of overlock machines, the edge of the textile is usually overlocked on one side only. After one side of the textile is overlocked, the textile is adjusted to perform the next overlock operation. Only one side can be overlocked at a time, which affects the overlocking efficiency. Secondly, the overlock machine can only overlock the textile by simply pressing it tightly, which can cause the textile to slip and shift, affecting the overlocking quality.

[0004] Therefore, how to provide a double-sided overprinting machine is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] One objective of this invention is to provide a double-sided overlock machine. This invention solves the problems in the prior art where overlock machines can only overlock one side, thus affecting overlock efficiency, and where overlock machines simply press the textile fabric together before overlocking, causing the textile fabric to slip and shift, thus affecting overlock quality.

[0006] A double-sided overlock machine according to an embodiment of the present invention includes a base frame and side frames. The side frames are located on the top of the base frame near the side. A thread spool and a thread threading frame are respectively mounted on the side frames, with the thread spool directly below the thread threading frame. A forward-hand overlock machine body and a reverse-hand overlock machine body are respectively mounted on the top of the base frame. A front pressure roller is located on one side of the forward-hand overlock machine body and the reverse-hand overlock machine body. The thread spool and the thread threading frame are both located above the forward-hand overlock machine body and the reverse-hand overlock machine body. A transmission belt mechanism is provided opposite to both the forward-hand overlock machine body and the reverse-hand overlock machine body. The transmission belt mechanism includes a drive motor and a transmission... The machine comprises a moving connecting rod, a stabilizing rod, a mounting bracket, a positioning wheel, a transmission belt body, a tensioning mechanism, and a pressing mechanism. Two mounting brackets are positioned opposite each other on the front and back overlock machine bodies. The drive motor is mounted on the mounting bracket. Both ends of the transmission connecting rod are mounted on the positioning wheel. The output shaft of the drive motor is fixedly connected to the end face of the transmission connecting rod. Both ends of the stabilizing rod are also rotatably connected to the two mounting brackets. The stabilizing rod and the transmission connecting rod are parallel to each other. The positioning wheel, tensioning mechanism, and pressing mechanism are all mounted on the mounting bracket. The transmission belt body is movably sleeved on the positioning wheel, tensioning mechanism, and pressing mechanism.

[0007] The transmission connecting rod includes a fixed cylinder and a telescopic rod. The telescopic rod is movably connected inside the fixed cylinder. The telescopic rod and the fixed cylinder are rotatably connected to two mounting brackets, and the end of the telescopic rod away from the fixed cylinder is fixedly connected to the output shaft of the drive motor.

[0008] The structure of the stabilizer bar is the same as that of the transmission connecting rod, and the shape of the inner wall of the fixed cylinder is rectangular. The shape and size of the telescopic rod located at one end inside the fixed cylinder match the shape and size of the inner wall of the fixed cylinder.

[0009] The base frame is equipped with slide rails at the lower positions corresponding to the front and back overlock machine bodies, and the front and back overlock machine bodies are slidably connected to the surface of the slide rails.

[0010] The tensioning mechanism includes a tension spring, a first fixed joint, a tensioning swing arm, and a tensioning wheel. One end of the tension spring is mounted on the mounting bracket. The first fixed joint is mounted on the end face of the tensioning swing arm. The tensioning swing arm is rotatably connected to the mounting bracket through the first fixed joint. The tensioning wheel is located at the end of the tensioning swing arm away from the first fixed joint. The tensioning wheel is movably attached to the outer side of the transmission belt body. The other end of the tension spring is located on the surface of the tensioning swing arm near the tensioning wheel.

[0011] The clamping mechanism includes a second fixed joint, a rocker arm, a clamping wheel, a torsion spring, a third fixed joint, a foot drive cylinder, a crank arm, and a belt-driven foot wheel. The second fixed joint is located at the bottom of the mounting frame. The rocker arm is mounted on the second fixed joint, and the other end of the rocker arm is rotatably connected to the clamping wheel. The torsion spring is located on the surface of the mounting frame near the rocker arm, with one end of the torsion spring fitting against the mounting frame and the other end abutting against the surface of the rocker arm. The third fixed joint is located on the surface of the mounting frame and below the tension spring. The crank arm is rotatably connected to the mounting frame via the third fixed joint. The belt-driven foot wheel is located on the end face of the crank arm, and the other end of the crank arm is rotatably connected to the output shaft of the foot drive cylinder. The end of the foot drive cylinder away from the crank arm is rotatably connected to the surface of the mounting frame. The transmission belt body is movably sleeved on the surfaces of the clamping wheel and the belt-driven foot wheel.

[0012] A fabric sensor, which is an infrared sensor, is installed at the top of the base frame between the front overlock machine body and the back overlock machine body.

[0013] The beneficial effects of this utility model are:

[0014] By setting up a forward overlock machine and a reverse overlock machine, the forward overlock machine and the reverse overlock machine simultaneously overlock both sides of the fabric, thus improving the overlocking effect.

[0015] By setting up slide rails, transmission connecting rods, and stabilizing rods, the slide rails are used to control the distance between the overlock machine body and the reverse overlock machine body to match different sizes of textiles. The stabilizing rods and transmission connecting rods use their own telescopic function to match the distance between the overlock machine body and the reverse overlock machine body, thereby improving the stability of the overlock machine body and the reverse overlock machine body.

[0016] By setting up a transmission belt mechanism, the textile is pressed and positioned, which greatly improves the stability of the textile during the overlocking operation. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a frontal cross-sectional three-dimensional structural diagram of a double-sided overlock machine proposed in this utility model.

[0019] Figure 2 This is a partial structural diagram of the pulley mechanism in a double-sided overlock machine proposed in this utility model.

[0020] Figure 3 This is a partial three-dimensional structural diagram of the belt pulley mechanism, drive motor, transmission connecting rod and stabilizing rod connection state in a double-sided overlock machine proposed in this utility model.

[0021] Figure 4 This is a partial three-dimensional structural diagram of another position of the transmission belt mechanism in a double-sided overlock machine proposed in this utility model.

[0022] Figure 5 This is a partial three-dimensional structural diagram of the front-hand overlock machine body, the back-hand overlock machine body, and the slide rail connection state of a double-sided overlock machine proposed in this utility model.

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of the transmission connecting rod in a double-sided overlock machine proposed in this utility model.

[0024] Figure 7 This is a three-dimensional cross-sectional view of another position of the transmission connecting rod in a double-sided overlock machine proposed in this utility model.

[0025] The attached diagram shows: 1. Base frame; 2. Side frame; 3. Thread spool; 4. Threading frame; 5. Front overlock machine body; 6. Back overlock machine body; 7. Front pressure roller; 8. Transmission belt mechanism; 9. Drive motor; 10. Transmission connecting rod; 11. Stabilizer bar; 12. Mounting bracket; 13. Positioning roller; 14. Transmission belt body; 15. Tensioning mechanism; 16. Pressing mechanism; 17. Fixed cylinder; 18. Telescopic rod; 19. Slide rail; 20. Tension spring; 21. First fixed joint; 22. Tensioning swing arm; 23. Tensioning roller; 24. Second fixed joint; 25. Swing arm; 26. Pressing roller; 27. Torsion spring; 28. Third fixed joint; 29. ​​Presser foot drive cylinder; 30. Crank arm; 31. Belt presser foot roller; 32. Fabric sensor. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0027] refer to Figure 1-7 In this embodiment, a base frame 1 and a side frame 2 are included. The side frame 2 is located on the top of the base frame 1 near the side. A spool 3 and a threading frame 4 are respectively installed on the side frame 2. The spool 3 is located directly below the threading frame 4. A front overlock machine body 5 and a back overlock machine body 6 are respectively installed on the top of the base frame 1. A front pressure roller 7 is installed on one side of the front overlock machine body 5 and the back overlock machine body 6. The spool 3 and the threading frame 4 are both located above the front overlock machine body 5 and the back overlock machine body 6. There are two front overlock machines 5 and two back overlock machines 6, which are symmetrically arranged on the base frame 1. During operation, the front overlock machine body 5 and the back overlock machine body 6 simultaneously perform overlock operations on the textile, so that both sides of the textile can be overlocked at once, which greatly improves the efficiency of the overlock operation.

[0028] refer to Figure 1-7In this embodiment, both the front overlock machine body 5 and the back overlock machine body 6 are provided with a transmission belt mechanism 8 facing each other. The transmission belt mechanism 8 includes a drive motor 9, a transmission connecting rod 10, a stabilizing rod 11, a mounting bracket 12, a positioning wheel 13, a transmission belt body 14, a tensioning mechanism 15, and a pressing mechanism 16. There are two mounting brackets 12, which are arranged facing each other on the front overlock machine body 5 and the back overlock machine body 6. The drive motor 9 is mounted on the mounting bracket 12. The two ends of the transmission connecting rod 10 are respectively mounted on the positioning wheel 13. It should be noted that there are several positioning wheels 13. The two ends of the transmission connecting rod 10 are respectively fixed. The positioning wheels 13 are fixed in the corresponding positions. The transmission connecting rod 10 drives the positioning wheels 13 to rotate. The rotation of the positioning wheels 13 will drive the transmission belt body to rotate. The output shaft of the drive motor 9 is fixedly connected to the end face of the transmission connecting rod 10. The two ends of the stabilizer 11 are also rotatably connected to the two mounting brackets 12. The stabilizer 11 and the transmission connecting rod 10 are parallel to each other. The transmission connecting rod 10 is used for transmission operation. When the drive motor 9 starts, it will drive the transmission wheel mechanism on the front hand overlock machine body 5 and the back hand overlock machine body 6 to rotate synchronously through the transmission connecting rod 10. The stabilizer 11 improves the stability of the front hand overlock machine body 5 and the back hand overlock machine body 6.

[0029] The positioning wheel 13, tensioning mechanism 15, and pressing mechanism 16 are all mounted on the mounting frame 12. The transmission belt body 14 is movably sleeved on the positioning wheel 13, tensioning mechanism 15, and pressing mechanism 16. The positioning wheel 13 is rotatably connected to the mounting frame 12 to position the transmission belt body 14 at other positions, ensuring stable movement of the transmission belt body 14. The tensioning mechanism 15 includes a tension spring 20, a first fixing joint 21, a tensioning swing arm 22, and a tensioning wheel 23. One end of the tension spring 20 is mounted on the mounting frame 12. The first fixing joint 21 is mounted on the end face of the tensioning swing arm 22. The tensioning swing arm 22 is rotatably connected to the mounting frame 12 through the first fixing joint 21. The tensioning wheel 23... 3. The tensioning swing arm 22 is located at one end away from the first fixed joint 21. The tensioning wheel 23 is movably attached to the outer side of the transmission belt body 14. The other end of the tension spring 20 is located on the surface of the tensioning swing arm 22 near the tensioning wheel 23. As the tensioning swing arm 22 rotates around the first fixed joint 21, the tension spring 20 pulls the tensioning swing arm 22. The rotation of the tensioning swing arm 22 will drive the tensioning wheel 23 to move towards the mounting bracket 12. In this way, the movement of the tensioning wheel 23 will pull the transmission belt body 14, thereby tightening the transmission belt body 14, increasing the tension of the transmission belt body 14, making the transmission belt body 14 less prone to loosening, and also improving the working stability of the transmission belt body 14.

[0030] The clamping mechanism 16 includes a second fixed joint 24, a rocker arm 25, a clamping wheel 26, a torsion spring 27, a third fixed joint 28, a foot-driven cylinder 29, a crank arm 30, and a belt-driven foot wheel 31. The second fixed joint 24 is located at the bottom of the mounting frame 12. The rocker arm 25 is mounted on the second fixed joint 24, and the other end of the rocker arm 25 is rotatably connected to the clamping wheel 26. The torsion spring 27 is located on the surface of the mounting frame 12 near the rocker arm 25, with one end of the torsion spring 27 fitting against the mounting frame 12 and the other end abutting against the surface of the rocker arm 25. The third fixed joint 28 is located on the surface of the mounting frame 12 and below the tension spring 20. The crank arm 30 is rotatably connected to the mounting frame 12 via the third fixed joint 28. The belt-driven foot wheel 31 is located on the end face of the crank arm 30, and the other end of the crank arm 30 is rotatably connected to the output shaft of the foot-driven cylinder 29. One end of the crank arm 30 is rotatably connected to the surface of the mounting frame 12. The transmission belt body 14 is movably sleeved on the surface of the pressure wheel 26 and the belt pressure foot wheel 31. During operation, firstly, the front pressure wheel 7 is removed by operating the front pressure wheel 7. Then, the pressure foot drive cylinder 29 is contracted to pull the crank arm 30 to rotate around the third fixed joint 28. At this time, the rotation of the crank arm 30 will drive the belt pressure foot wheel 31 to move upward, which makes it convenient to put the textile into this position. When the textile is put into the position of the belt pressure foot wheel 31, the pressure wheel will move upward and drive the rocker arm 25 to rotate. The rotation of the rocker arm 25 will squeeze the torsion spring 27. Under the reaction of the torsion spring 27, the textile is stably pressed onto the top of the base frame 1 by the pressure foot wheel. The transmission belt body will drive the textile to move by rotating the positioning wheel 13. In this way, the textile is completely laid out by the transmission belt body 14 and pressed by the pressure wheel 26 to prevent the textile from shifting during the overlocking operation.

[0031] refer to Figure 1-7 In this embodiment, a fabric sensor 32 is installed at the top of the base frame 1, located between the front overlock machine body 5 and the back overlock machine body 6. The fabric sensor 32 is an infrared sensor. When the fabric sensor 32 senses the textile, it controls the presser foot drive cylinder 29 to push the crank arm 30 to rotate around the third fixed joint 28 through the internal controller (not shown in the figure, which is a prior art component and will not be described in detail here). At this time, the rotation of the crank arm 30 will drive the belt presser foot wheel 31 to move downward and press on the placed object to improve the pressing effect on the textile and improve the stability of the placed object.

[0032] refer to Figure 1-7In this embodiment, the transmission connecting rod 10 includes a fixed cylinder 17 and a telescopic rod 18. The telescopic rod 18 is movably connected inside the fixed cylinder 17. The telescopic rod 18 and the fixed cylinder 17 are rotatably connected to two mounting brackets 12, respectively. The end of the telescopic rod 18 away from the fixed cylinder 17 is fixedly connected to the output shaft of the drive motor 9. The structure of the stabilizing rod 11 is the same as that of the transmission connecting rod 10, and the inner wall of the fixed cylinder 17 is rectangular to prevent the telescopic rod 18 from rotating on the fixed cylinder 17. The shape and size of the end of the telescopic rod 18 inside the fixed cylinder 17 match the shape and size of the inner wall of the fixed cylinder 17 to reduce shaking and improve overall stability. The base frame 1 is located below the front overlock machine body 5 and the back overlock machine body 6. The machine is equipped with a slide rail 19. The overlock machine body 5 and the reverse overlock machine body 6 are slidably connected to the surface of the slide rail 19. During operation, when it is necessary to move the overlock machine body 5 or the reverse overlock machine body 6, simply push the overlock machine body 5 or the reverse overlock machine body 6 to make it slide on the slide rail 19. This changes the distance between the overlock machine body 5 and the reverse overlock machine body 6, allowing it to perform overlocking operations on textiles of different specifications. Before adjusting the distance, the drive motor 9 needs to be turned off. When the overlock machine body 5 and the reverse overlock machine body 6 move, they will drive the telescopic rod 18 and the fixed cylinder 17 to move. Thus, the extension or retraction of the telescopic rod 18 and the fixed cylinder 17 can match the distance between the overlock machine body 5 and the reverse overlock machine body 6.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A double-sided overlock machine, characterized in that, Includes a base frame (1) and a side frame (2). The side frame (2) is located on the top of the base frame (1) near the side. A wire spool (3) and a wire threading frame (4) are respectively installed on the side frame (2). The wire spool (3) is located directly below the wire threading frame (4). A front hand overlock machine body (5) and a back hand overlock machine body (6) are respectively installed on the top of the base frame (1). A front pressure wheel (7) is installed on one side of the front hand overlock machine body (5) and the back hand overlock machine body (6) on the top of the base frame (1). The wire spool (3) and the wire threading frame (4) are both located above the front hand overlock machine body (5) and the back hand overlock machine body (6). A transmission belt mechanism (8) is installed on opposite sides of the front hand overlock machine body (5) and the back hand overlock machine body (6). The transmission belt mechanism (8) includes a drive motor (9), a transmission connecting rod (10), a stabilizing rod (11), a mounting bracket (12), a positioning wheel (13), a transmission belt body (14), a tensioning mechanism (15), and a pressing mechanism (16). There are two mounting brackets (12), which are set opposite to the front hand-over-edge machine body (5) and the back hand-over-edge machine body (6). The drive motor (9) is set on the mounting bracket (12), and the two ends of the transmission connecting rod (10) are respectively set with On the positioning wheel (13), the output shaft of the drive motor (9) is fixedly connected to the end face of the transmission connecting rod (10). The two ends of the stabilizer (11) are also rotatably connected to the two mounting brackets (12). The stabilizer (11) and the transmission connecting rod (10) are parallel to each other. The positioning wheel (13), the tensioning mechanism (15) and the pressing mechanism (16) are all set on the mounting bracket (12). The transmission belt body (14) is movably sleeved on the positioning wheel (13), the tensioning mechanism (15) and the pressing mechanism (16).

2. The double-sided overlock machine according to claim 1, characterized in that, The transmission connecting rod (10) includes a fixed cylinder (17) and a telescopic rod (18). The telescopic rod (18) is movably connected inside the fixed cylinder (17). The telescopic rod (18) and the fixed cylinder (17) are rotatably connected to two mounting brackets (12) respectively. The end of the telescopic rod (18) away from the fixed cylinder (17) is fixedly connected to the output shaft of the drive motor (9).

3. A double-sided overlock machine according to claim 2, characterized in that, The structure of the stabilizer (11) is the same as that of the transmission connecting rod (10), and the inner wall of the fixed cylinder (17) is rectangular. The shape and size of the telescopic rod (18) located at one end inside the fixed cylinder (17) match the shape and size of the inner wall of the fixed cylinder (17).

4. A double-sided overlock machine according to claim 3, characterized in that, The base frame (1) is provided with a slide rail (19) at the lower position corresponding to the front hand overlock machine body (5) and the back hand overlock machine body (6), and the front hand overlock machine body (5) and the back hand overlock machine body (6) are slidably connected to the surface of the slide rail (19).

5. A double-sided overlock machine according to claim 4, characterized in that, The tensioning mechanism (15) includes a tension spring (20), a first fixed joint (21), a tensioning swing arm (22), and a tensioning wheel (23). One end of the tension spring (20) is mounted on the mounting frame (12). The first fixed joint (21) is mounted on the end face of the tensioning swing arm (22). The tensioning swing arm (22) is rotatably connected to the mounting frame (12) through the first fixed joint (21). The tensioning wheel (23) is located at the end of the tensioning swing arm (22) away from the first fixed joint (21). The tensioning wheel (23) is movably attached to the outer side of the transmission belt body (14). The other end of the tension spring (20) is located on the surface of the tensioning swing arm (22) near the tensioning wheel (23).

6. A double-sided overlock machine according to claim 5, characterized in that, The clamping mechanism (16) includes a second fixed joint (24), a rocker arm (25), a clamping wheel (26), a torsion spring (27), a third fixed joint (28), a foot drive cylinder (29), a crank arm (30), and a belt-driven foot wheel (31). The second fixed joint (24) is located at the bottom of the mounting bracket (12). The rocker arm (25) is located on the second fixed joint (24). The other end of the rocker arm (25) is rotatably connected to the clamping wheel (26). The torsion spring (27) is located on the surface of the mounting bracket (12) near the rocker arm (25). One end of the torsion spring (27) is attached to the mounting bracket (12). 7) The other end abuts against the surface of the rocker arm (25). The third fixed joint (28) is set on the surface of the mounting bracket (12) and located below the tension spring (20). The crank arm (30) is rotatably connected to the mounting bracket (12) through the third fixed joint (28). The belt presser wheel (31) is set on the end face of the crank arm (30). The other end of the crank arm (30) is rotatably connected to the output shaft of the presser foot drive cylinder (29). The end of the presser foot drive cylinder (29) away from the crank arm (30) is rotatably connected to the surface of the mounting bracket (12). The transmission belt body (14) is movably sleeved on the surface of the pressure wheel (26) and the belt presser wheel (31).

7. A double-sided overlock machine according to claim 6, characterized in that, A fabric sensor (32) is provided at the top of the base frame (1) between the front overlock machine body (5) and the back overlock machine body (6). The fabric sensor (32) is an infrared sensor.

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