Fabric overlock machine with automatic feeding device
Patent Information
- Application Number
- CN202611150357.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-31
- Publication Date
- 2026-11-03
AI Technical Summary
Traditional overlock machines rely on manual guidance for the fabric path, which can easily cause the fabric to deviate and affect the overlocking effect.
A fabric overlock machine with an automatic feeding device was designed, including a frame, unwinding roller, guide assembly and locking part. Through the cooperation of support shaft, conveying roller and limit plate, the automatic supply and precise path control of fabric are realized.
It enables automated fabric release and precise supply, reduces manual intervention, improves overlocking effect and processing efficiency, and simplifies the replacement process of the unwinding roller.
Smart Images
Figure CN123027702A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fabric processing technology, specifically a fabric overlocking machine with an automatic feeding device. Background Technology
[0002] Fabric overlock machine is a core specialized equipment in the garment sewing industry. It can quickly complete a round of wrap-around stitch sewing on the edge of the cut fabric, preventing the yarn from fraying and fraying at the edge of various fabrics such as polyester and knitted fabrics from the source, while making the seam smooth and beautiful. It is widely applicable to overlock operations of various fabrics such as T-shirts, underwear, and bedding. However, in the application of traditional fabric overlock machines, the fabric path mainly relies on manual guidance. During continuous overlock operations, the fabric path is very prone to deviation, affecting the overlock effect.
[0003] To address these issues, the present invention provides a fabric overlock machine with an automatic feeding device. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this invention provides a fabric overlock machine with an automatic feeding device, which solves the aforementioned problems.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a fabric overlock machine with an automatic feeding device, comprising: The frame has a locking mechanism at its top, an extension frame is fixedly connected to one end of the frame, and a support frame is provided at the top of the extension frame. An unwinding roller has an assembly hole in its middle. An assembly assembly is provided on the support frame. The assembly assembly has a support part and a locking part. The support part is used to cooperate with the assembly hole to form a pre-assembly of the unwinding roller. The locking part restricts the movement of the unwinding roller after the unwinding roller is pre-assembled. A guiding assembly is mounted on the top of the unwinding roller. The guiding assembly includes a settling frame and a conveying roller. The settling frame is fixedly connected to the top of the extension frame. A space for the fabric to pass through is formed between the conveying roller and the settling frame. When the unwinding roller is pre-assembled, the conveying roller increases the space for the fabric to pass through by following the locking part, so that the free end of the fabric can pass through. When the locking part restricts the unwinding roller, the conveying roller is adjusted by the locking part to contact the fabric and restrict the fabric within the space.
[0006] Preferably, the support part is a support shaft, which is rotatably connected to the top of the support frame. The unwinding roller is sleeved on the outside of the support shaft through the assembly hole. A baffle is fixedly connected to the outside of the support shaft. A positioning frame is fixedly connected to one side of the top of the support frame. A drive motor is fixedly connected to one end of the positioning frame, and the output end of the drive motor is fixedly connected to the support shaft.
[0007] Preferably, the locking part includes: An adjusting frame is fixedly connected to the bottom end of one side of a support frame. A transmission screw is rotatably connected to the adjusting frame. A transmission motor is fixedly connected to one end of the adjusting frame, and the output end of the transmission motor is also fixedly connected to the transmission screw. A displacement seat is threaded onto the transmission screw. The displacement rod is slidably connected to the middle of the support frame. The end of the displacement rod near the displacement seat is also fixedly connected to the displacement seat. The end of the displacement rod away from the adjustment frame is fixedly connected to a displacement plate. The top of the displacement plate is fixedly connected to a support plate. Multiple sliding rods are slidably connected to the edge of the support plate. A baffle is fixedly connected to one end of each sliding rod, and a helical spring is fixedly connected between the baffle and the support plate. A limit plate is fixedly connected to the other end of each sliding rod.
[0008] Preferably, both ends of the top of the placement frame are vertically slidably connected to limit rods, and an assembly frame is fixedly connected between the bottoms of the two limit rods. Both ends of the bottom of the assembly frame are rotatably connected to limit shafts, and the conveying roller is fixedly connected to the limit shafts. A linkage rod is fixedly connected between one side of the two limiting rods. A linkage plate is rotatably connected to the linkage rod. Support ears are fixedly connected to both ends of one side of the extension frame. An adjusting shaft is rotatably connected between the two support ears. An eccentric plate is fixedly connected to the middle of the adjusting shaft. The end of the linkage plate away from the linkage rod is also rotatably connected to the eccentric plate. A linkage spur gear is fixedly connected to the adjusting shaft near the displacement seat. A bearing frame is fixedly connected to the side of the displacement seat near the linkage spur gear. A transmission rack is fixedly connected to the bearing frame. The transmission rack is also meshed with the linkage spur gear.
[0009] Preferably, a transmission mechanism is provided between the support shaft and the limiting shaft. The transmission mechanism is used to obtain power from the support shaft to drive the conveyor roller to rotate. The transmission mechanism includes: Two mounting ears are fixedly connected to both ends of the storage rack, and a drive shaft is rotatably connected to the middle of each mounting ear. A sprocket A and a spur gear A are fixedly connected to the drive shaft, and the two sprockets A are connected by a chain. Two spur gears B are fixedly connected to the outside of two limiting shafts, and the two spur gears B are respectively meshed with two spur gears A. Two sprockets B, one of which is fixedly connected to one of the drive shafts, and the other sprocket B is fixedly connected to the outside of the support shaft, and the two sprockets B are connected by a chain.
[0010] Preferably, a tension adjustment assembly is provided on one side of the placement rack, the tension adjustment assembly comprising: A mounting shaft is rotatably connected to one side of the placement frame. An adjusting arm is fixedly connected to the outer side of the mounting shaft, and a support roller is rotatably connected to the end of the adjusting arm away from the mounting shaft. A guide arm is fixedly connected to one side of the bottom of the adjusting arm. A guide groove is provided in the middle of the guide arm. An adjusting ear is fixedly connected to the bottom end of the positioning frame. An adjusting screw is threadedly connected to the middle of the adjusting ear. The transfer ear is rotatably connected to the top of the adjusting screw, and a transfer rod is fixedly connected to the top of the transfer ear. The transfer rod is also movably connected inside the guide slot.
[0011] Preferably, a limiting strip is provided inside the assembly hole, the limiting strip is fixedly connected to the outside of the support shaft, and the limiting strip is also slidably connected inside the limiting groove.
[0012] Preferably, the limiting plate has multiple support holes on the edge away from the slide bar, and each support hole is movably connected to a ball bearing.
[0013] Preferably, both ends of the placement rack have clearance grooves, and both ends of the linkage rod are located inside the two clearance grooves respectively.
[0014] Preferably, an anti-rotation rod is vertically slidably connected to the middle of the adjusting ear, and the top end of the anti-rotation rod is also fixedly connected to the transfer ear.
[0015] Beneficial effects This invention provides a fabric overlock machine with an automatic feeding device. Compared with the prior art, it has the following advantages: This fabric overlocking machine with an automatic feeding device, through its overall structural coordination, can automatically release the fabric to be overlocked by coordinating with the rotation of the support shaft. By using a guide component to limit the transmission path of the fabric, the fabric can be accurately supplied to the overlocking mechanism, effectively reducing manpower input and ensuring the overlocking effect of the fabric.
[0016] This fabric overlock machine with an automatic feeding device, through the structural cooperation of the unwinding roller and assembly components, can not only ensure the applicability of the unwinding roller, but also achieve rapid replacement of the unwinding roller by means of the controllable separation of the limiting plate and the unwinding roller, which greatly shortens the replacement time of the unwinding roller.
[0017] This fabric overlocking machine with an automatic feeding device uses an assembly frame to adjust the support of the conveyor rollers and relies on the displacement of the displacement seat to adaptively change the space between the placement frame and the conveyor rollers. This allows the free end of the fabric to pass through during the change of the unwinding roller, thus enabling faster overlocking of the fabric and effectively ensuring overall processing efficiency. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the assembly components of the present invention; Figure 4 This is a schematic diagram of the structure of the guiding component of the present invention; Figure 5 This is a schematic diagram of the assembly structure of the displacement seat of the present invention; Figure 6 This is a schematic diagram of the assembly structure of the limiting disk of the present invention; Figure 7 This is a schematic diagram of the assembly structure of the linkage plate of the present invention; Figure 8 This is a schematic diagram of the separated structure of the transmission spur gear A and the transmission spur gear B of the present invention; Figure 9 This is a schematic diagram of the assembly structure of the adjusting arm of the present invention.
[0019] In the diagram: 1. Frame; 2. Seam locking mechanism; 3. Extension frame; 4. Support frame; 5. Unwinding roller; 6. Assembly hole; 7. Assembly assembly; 8. Guide assembly; 9. Support shaft; 10. Baffle plate; 11. Positioning frame; 12. Drive motor; 13. Adjusting frame; 14. Transmission screw; 15. Transmission motor; 16. Displacement rod; 17. Displacement plate; 18. Support plate; 19. Slide rod; 20. Baffle plate; 21. Helical spring; 22. Limiting plate; 23. Displacement seat; 24. Settling frame; 25. Limiting rod; 26. Assembly frame; 27. Limiting... 28. Shaft; 29. Conveyor roller; 30. Linkage rod; 31. Linkage plate; 32. Support ear; 33. Adjusting shaft; 34. Eccentric plate; 35. Linkage spur gear; 36. Bearing frame; 37. Transmission rack; 38. Mounting ear; 39. Transmission shaft; 40. Sprocket A; 41. Transmission spur gear B; 42. Sprocket B; 43. Mounting shaft; 44. Adjusting arm; 45. Support roller; 46. Guide arm; 47. Guide slot; 48. Adjusting ear; 49. Adjusting screw; 50. Transfer ear; 51. Transfer rod. Detailed Implementation
[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0021] Example 1: Please see Figure 1-9 A fabric overlock machine with an automatic feeding device, comprising: The frame 1 has a locking mechanism 2 at its top and an extension frame 3 fixedly connected to one end of the frame 1. The top of the extension frame 3 has a support frame 4. More specifically, the overlocking mechanism 2 consists of a machine head, needle plate, needle bar and looper mechanism, differential feed dog, thread tension adjustment system, presser foot and sewing table, and motor transmission system. Its working principle is that the main shaft drives the needle to pierce the fabric up and down to form a needle loop, while the lower looper and upper looper alternately enter the needle loop to form a chain stitch, so that multiple threads interweave at the edge of the fabric to form an overlock stitch, thereby completing the sewing and anti-fraying treatment of the fabric edge. This is a mature existing technology and will not be described in detail here. The unwinding roller 5 has an assembly hole 6 in the middle. The support frame 4 is provided with an assembly component 7. The assembly component 7 has a support part and a locking part. The support part is used to cooperate with the assembly hole 6 to form a pre-assembly of the unwinding roller 5. The locking part restricts the movement of the unwinding roller 5 after the unwinding roller 5 is pre-assembled. The guide assembly 8 is mounted on the top of the unwinding roller 5. The guide assembly 8 includes a settling frame 24 and a conveyor roller 28. The settling frame 24 is fixedly connected to the top of the extension frame 3. A space for the fabric to pass through is formed between the conveyor roller 28 and the settling frame 24. When the unwinding roller 5 is pre-assembled, the conveyor roller 28 increases the space for the fabric to pass through following the locking part, so that the free end of the fabric can pass through. When the locking part restricts the unwinding roller 5, the conveyor roller 28 is adjusted by the locking part to contact the fabric and restrict the fabric within the space. Please refer to Figure 5 In this embodiment, the support part is a support shaft 9, which is rotatably connected to the top of the support frame 4. The unwinding roller 5 is sleeved on the outside of the support shaft 9 through the assembly hole 6. A baffle 10 is fixedly connected to the outside of the support shaft 9. A positioning frame 11 is fixedly connected to one side of the top of the support frame 4. A drive motor 12 is fixedly connected to one end of the positioning frame 11, and the output end of the drive motor 12 is fixedly connected to the support shaft 9. Please refer to Figure 5 In this embodiment, a limiting strip is provided inside the assembly hole 6, and the limiting strip is fixedly connected to the outside of the support shaft 9. The limiting strip is also slidably connected inside the limiting groove. Through the structural cooperation of the limiting strip and the limiting groove, when the unwinding roller 5 is assembled, the limiting strip is first aligned with the limiting groove, and then the assembly hole 6 is pushed. When the limiting strip is inserted into the limiting groove, the position of the unwinding roller 5 can be guided, thus preventing the unwinding roller 5 from rotating uncontrollably on the support shaft 9. Please refer to Figure 6 In this embodiment, the locking part includes: Adjustment frame 13 is fixedly connected to the bottom end of one side of support frame 4. A transmission screw 14 is rotatably connected to the adjustment frame 13. A transmission motor 15 is fixedly connected to one end of the adjustment frame 13, and the output end of the transmission motor 15 is also fixedly connected to the transmission screw 14. A displacement seat 23 is threadedly connected to the transmission screw 14. Please refer to Figure 6 In this embodiment, a light rod is fixedly connected to the inner side of the adjusting frame 13, and a through hole is opened on the displacement seat 23. The through hole and the guide rod are in clearance fit. Through the structural fit between the light rod and the through hole, the displacement of the displacement seat 23 can be effectively guided, preventing the displacement seat 23 from rotating with the transmission screw 14, and greatly ensuring the stability of the displacement seat 23 during displacement.
[0022] The displacement rod 16 is slidably connected to the middle of the support frame 4. The end of the displacement rod 16 near the displacement seat 23 is also fixedly connected to the displacement seat 23. The end of the displacement rod 16 away from the adjustment frame 13 is fixedly connected to the displacement plate 17. The top of the displacement plate 17 is fixedly connected to the support plate 18. Multiple slide rods 19 are slidably connected to the edge of the support plate 18. A baffle 20 is fixedly connected to one end of the slide rod 19. A helical spring 21 is fixedly connected between the baffle 20 and the support plate 18. A limit plate 22 is fixedly connected to the other end of the slide rod 19. Please refer to Figure 6 In this embodiment, the limiting disk 22 has multiple support holes on the edge away from the slide bar 19. Each support hole is movably connected to a ball. The ball is mounted through the support hole. After the limiting disk 22 approaches the unwinding roller 5, the ball will contact the surface of the unwinding roller 5. During the subsequent rotation of the unwinding roller 5 following the support shaft 9, the ball will roll adaptively in the support hole. In this way, while effectively limiting the unwinding roller 5, the resistance of the unwinding roller 5 during rotation can also be reduced. Please refer to Figure 7 In this embodiment, both ends of the top of the placement frame 24 are vertically slidably connected to limit rods 25, and an assembly frame 26 is fixedly connected between the bottoms of the two limit rods 25. Both ends of the bottom of the assembly frame 26 are rotatably connected to limit shafts 27, and the conveying roller 28 is fixedly connected to the limit shafts 27. A linkage rod 29 is fixedly connected between one side of the two limit rods 25. A linkage plate 30 is rotatably connected to the linkage rod 29. Support ears 31 are fixedly connected to both ends of one side of the extension frame 3. An adjusting shaft 32 is rotatably connected between the two support ears 31. An eccentric plate 33 is fixedly connected to the middle of the adjusting shaft 32. The end of the linkage plate 30 away from the linkage rod 29 is also rotatably connected to the eccentric plate 33. A linkage spur gear 34 is fixedly connected to the adjusting shaft 32 near the displacement seat 23. A bearing frame 35 is fixedly connected to the side of the displacement seat 23 near the linkage spur gear 34. A transmission rack 36 is fixedly connected to the bearing frame 35. The transmission rack 36 is also meshed with the linkage spur gear 34. Please refer to Figure 7 In this embodiment, the end of the eccentric plate 33 away from the adjusting shaft 32 is provided with a rotating shaft, and the end of the linkage plate 30 away from the linkage rod 29 is connected to the rotating shaft. By setting the rotating shaft, the linkage plate 30 can be effectively assembled to ensure the linkage effect between the eccentric plate 33 and the linkage rod 29. Please refer to Figure 7 In this embodiment, both ends of the placement frame 24 have clearance grooves, and both ends of the linkage rod 29 are located inside the two clearance grooves respectively. By setting the clearance grooves, space can be provided for the vertical displacement of the linkage rod 29, and interference between the linkage rod 29 and the placement frame 24 can be avoided. Please refer to Figure 8 In this embodiment, a transmission mechanism is provided between the support shaft 9 and the limiting shaft 27. The transmission mechanism is used to obtain power from the support shaft 9 to drive the conveyor roller 28 to rotate. The transmission mechanism includes: Two mounting ears 37 are fixedly connected to both ends of the placement frame 24. A drive shaft 38 is rotatably connected to the middle of the mounting ears 37. A sprocket A39 and a drive spur gear A40 are fixedly connected to the drive shaft 38, and the two sprockets A39 are connected by a chain. Two spur gears B41 are fixedly connected to the outside of the two limiting shafts 27, and the two spur gears B41 are respectively meshed with the two spur gears A40. Two sprockets B42, one of which is fixedly connected to one of the drive shafts 38, and the other sprocket B42 is fixedly connected to the outside of the support shaft 9, and the two sprockets B42 are connected by a chain.
[0023] Example 2: Please see Figure 9 This embodiment provides a technical solution based on Embodiment 1: a tension adjustment assembly is provided on one side of the placement frame 24, the tension adjustment assembly including: A shaft 43 is mounted on one side of the placement frame 24. An adjusting arm 44 is fixedly connected to the outer side of the shaft 43. A support roller 45 is rotatably connected to the end of the adjusting arm 44 away from the shaft 43. The guide arm 46 is fixedly connected to one side of the bottom of the adjusting arm 44. The guide arm 46 has a guide groove 47 in the middle. The bottom end of the placement frame 24 is fixedly connected to an adjusting ear 48. The middle of the adjusting ear 48 is threadedly connected to an adjusting screw 49. Please refer to Figure 9 In this embodiment, an anti-rotation rod is vertically slidably connected to the middle of the adjusting ear 48, and the top end of the anti-rotation rod is fixedly connected to the transfer ear 50. Through the connection between the anti-rotation rod and the transfer ear 50, the displacement of the transfer ear 50 can be effectively guided, avoiding uncontrollable rotation during the adjustment of the transfer ear 50, and greatly ensuring the stability of the transfer ear 50 during application. The transfer ear 50 is rotatably connected to the top of the adjusting screw 49. The top of the transfer ear 50 is fixedly connected to the transfer rod 51, and the transfer rod 51 is also movably connected inside the guide groove 47.
[0024] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0025] Working principle: First, the unwinding roller 5 with the fabric is fitted onto the support shaft 9 through the assembly hole 6 until the unwinding roller 5 contacts the baffle plate 10, and the free end of the fabric is led out from the unwinding roller 5. Then, the fabric is passed through the space between the placement frame 24 and the conveying roller 28, and the fabric is laid on the support roller 45. Finally, the free end of the fabric is placed at the needle plate position in front of the presser foot. Then, the drive motor 15 is started to drive the drive screw 14 to rotate. With the connection between the drive screw 14 and the displacement seat 23, the displacement seat 23 can move along the drive screw 14. Under the drive of the displacement rod 16, the displacement plate 17 causes the support plate 18 to move closer to the unwinding roller 5. During the adjustment of the limiting plate 22 following the support plate 18, the limiting plate 22 will come into contact with the unwinding roller 5. Under the elastic potential energy of the spiral spring 21, the limiting plate 22 will position the unwinding roller 5 between the limiting plate 22 and the baffle plate 10, thereby locking the unwinding roller 5. Furthermore, in conjunction with the connection between the displacement seat 23 and the support frame 35, during the process of the support frame 35 following the displacement seat 23, the transmission rack 36 will drive the linkage spur gear 34, causing the adjusting shaft 32 to drive the eccentric plate 33 to rotate. Since the linkage plate 30 is connected between the linkage plate 30 and the linkage rod 29, when the eccentric plate 33 follows the adjusting shaft 32 to rotate, it can pull the linkage rod 29 with the help of the linkage plate 30, causing the limit rod 25 to drive the assembly frame 26 to adjust downward under the limit of the placement frame 24, thereby changing the vertical position of the conveyor roller 28. When the limit plate 22 is in close contact with the unwinding roller 5, the conveyor roller 28 will contact the fabric and cause the transmission spur gear B41 to mesh with the transmission spur gear A40. When the drive motor 12 is started and drives the support shaft 9 to rotate, it can drive the unwinding roller 5 to rotate synchronously and release the fabric. In conjunction with the chain, the power of the support shaft 9 can also be transmitted to one of the transmission shafts 38. Under the action of the sprocket A39 and the chain, the two transmission shafts 38 are made to rotate synchronously. The transmission spur gear A40 drives the transmission spur gear B41, which in turn drives the conveyor roller 28 to rotate through the limit shaft 27. Since the conveyor roller 28 is in contact with the fabric, the fabric can be conveyed to the overlock mechanism 2 during the rotation of the conveyor roller 28.
[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A fabric overlock machine with an automatic feeding device, characterized in that: include: A frame (1) is provided with a locking mechanism (2) at the top of the frame (1), and an extension frame (3) is fixedly connected to one end of the frame (1). A support frame (4) is provided at the top of the extension frame (3). An unwinding roller (5) has an assembly hole (6) in the middle. An assembly assembly (7) is provided on the support frame (4). The assembly assembly (7) has a support part and a locking part. The support part is used to cooperate with the assembly hole (6) to form a pre-assembly of the unwinding roller (5). The locking part restricts the movement of the unwinding roller (5) after the unwinding roller (5) is pre-assembled. The guide assembly (8) is mounted on the top of the unwinding roller (5). The guide assembly (8) includes a settling frame (24) and a conveyor roller (28). The settling frame (24) is fixedly connected to the top of the extension frame (3). A space for the fabric to pass through is formed between the conveyor roller (28) and the settling frame (24). When the unwinding roller (5) is pre-assembled, the conveyor roller (28) increases the space for the fabric to pass through by following the locking part, so that the free end of the fabric can pass through. When the locking part restricts the unwinding roller (5), the conveyor roller (28) is adjusted by the locking part to contact the fabric and restrict the fabric within the space.
2. A fabric overlock machine with an automatic feeding device according to claim 1, characterized in that: The support part is a support shaft (9), which is rotatably connected to the top of the support frame (4). The unwinding roller (5) is sleeved on the outside of the support shaft (9) through the assembly hole (6). A baffle (10) is fixedly connected to the outside of the support shaft (9). A positioning frame (11) is fixedly connected to one side of the top of the support frame (4). A drive motor (12) is fixedly connected to one end of the positioning frame (11), and the output end of the drive motor (12) is fixedly connected to the support shaft (9).
3. A fabric overlock machine with an automatic feeding device according to claim 2, characterized in that: The locking part includes: An adjustment frame (13) is fixedly connected to the bottom end of one side of the support frame (4). A transmission screw (14) is rotatably connected to the adjustment frame (13). A transmission motor (15) is fixedly connected to one end of the adjustment frame (13), and the output end of the transmission motor (15) is also fixedly connected to the transmission screw (14). A displacement seat (23) is threaded onto the transmission screw (14). The displacement rod (16) is slidably connected to the middle of the support frame (4). The end of the displacement rod (16) near the displacement seat (23) is also fixedly connected to the displacement seat (23). The end of the displacement rod (16) away from the adjustment frame (13) is fixedly connected to the displacement plate (17). The top of the displacement plate (17) is fixedly connected to the support plate (18). Multiple slide rods (19) are slidably connected to the edge of the support plate (18). A baffle (20) is fixedly connected to one end of each slide rod (19). A helical spring (21) is fixedly connected between the baffle (20) and the support plate (18). A limit plate (22) is fixedly connected to the other end of each slide rod (19).
4. A fabric overlock machine with an automatic feeding device according to claim 3, characterized in that: The top two ends of the placement frame (24) are vertically slidably connected to limit rods (25), and an assembly frame (26) is fixedly connected between the bottoms of the two limit rods (25). The bottom two ends of the assembly frame (26) are rotatably connected to limit shafts (27), and the conveying roller (28) is fixedly connected to the limit shafts (27). A linkage rod (29) is fixedly connected between one side of the two limiting rods (25). The linkage rod (29) is rotatably connected to a linkage plate (30). Support ears (31) are fixedly connected to both ends of one side of the extension frame (3). An adjusting shaft (32) is rotatably connected between the two support ears (31). An eccentric plate (33) is fixedly connected to the middle of the adjusting shaft (32). The end of the linkage plate (30) away from the linkage rod (29) is also rotatably connected to the eccentric plate (33). A linkage spur gear (34) is fixedly connected to the adjusting shaft (32) near the displacement seat (23). A bearing frame (35) is fixedly connected to the side of the displacement seat (23) near the linkage spur gear (34). A transmission rack (36) is fixedly connected to the bearing frame (35). The transmission rack (36) is also meshed with the linkage spur gear (34).
5. A fabric overlock machine with an automatic feeding device according to claim 4, characterized in that: A transmission mechanism is provided between the support shaft (9) and the limiting shaft (27). The transmission mechanism is used to obtain power from the support shaft (9) to drive the transmission roller (28) to rotate. The transmission mechanism includes: Two mounting ears (37) are fixedly connected to the two ends of the placement frame (24). A transmission shaft (38) is rotatably connected to the middle of the mounting ear (37). A sprocket A (39) and a transmission spur gear A (40) are fixedly connected to the transmission shaft (38), and the two sprockets A (39) are connected by a chain. Two transmission spur gears B (41) are fixedly connected to the outside of two limiting shafts (27), and the two transmission spur gears B (41) are respectively meshed with two transmission spur gears A (40); Two sprockets B (42), one of which is fixedly connected to one of the drive shafts (38), and the other is fixedly connected to the outside of the support shaft (9), and the two sprockets B (42) are connected by a chain.
6. A fabric overlock machine with an automatic feeding device according to claim 4, characterized in that: A tension adjustment assembly is provided on one side of the placement rack (24), the tension adjustment assembly comprising: A mounting shaft (43) is rotatably connected to one side of the placement frame (24). An adjusting arm (44) is fixedly connected to the outer side of the mounting shaft (43). A support roller (45) is rotatably connected to the end of the adjusting arm (44) away from the mounting shaft (43). The guide arm (46) is fixedly connected to one side of the bottom of the adjusting arm (44). The guide arm (46) has a guide groove (47) in the middle. The bottom end of the placement frame (24) is fixedly connected to an adjusting ear (48). The middle part of the adjusting ear (48) is threadedly connected to an adjusting screw (49). The transfer ear (50) is rotatably connected to the top of the adjusting screw (49), and the top of the transfer ear (50) is fixedly connected to the transfer rod (51), and the transfer rod (51) is also movably connected to the inside of the guide slot (47).
7. A fabric overlock machine with an automatic feeding device according to claim 1, characterized in that: A limiting strip is provided inside the assembly hole (6), and the limiting strip is fixedly connected to the outside of the support shaft (9), and the limiting strip is also slidably connected inside the limiting groove.
8. A fabric overlock machine with an automatic feeding device according to claim 3, characterized in that: The limiting plate (22) has multiple support holes on the edge away from the slide bar (19), and each support hole is movably connected with a ball.
9. A fabric overlock machine with an automatic feeding device according to claim 4, characterized in that: Both ends of the placement rack (24) have clearance grooves, and both ends of the linkage rod (29) are located inside the two clearance grooves respectively.
10. A fabric overlock machine with an automatic feeding device according to claim 6, characterized in that: The middle part of the adjusting ear (48) is vertically slidably connected to an anti-rotation rod, and the top end of the anti-rotation rod is also fixedly connected to the transfer ear (50).