Four-thread overlock sewing machine with adjustable cloth overlock sewing width

Abstract

The utility model relates to the field of four-thread overlock machines, and discloses a cloth overlock width-adjustable four-thread overlock machine which comprises a base, the top of the base is fixedly connected with a four-thread overlock machine body, a sewing needle is arranged on the four-thread overlock machine body, a guide plate is movably arranged on the top of the base, and the guide plate is fixedly connected with the four-thread overlock machine body. A precise adjusting mechanism is arranged between the guide plate and the base, and a thread stand mechanism used for placing sewing threads is arranged at the top of the four-thread overlock machine body. The sewing machine has the following advantages and effects that the width of the overlock can be effectively and accurately adjusted through the accurate adjusting mechanism, diversified production requirements of garment factories can be met, the quality and attractiveness of garments are ensured, four sewing thread rolls can be conveniently limited and placed through the thread stand mechanism, it is ensured that sewing threads are smoothly provided, and the production efficiency is improved. The smoothness of four-thread overlock sewing is improved, and meanwhile, the sewing thread coil is convenient to disassemble, assemble and replace.

Description

Technical Field

[0001] This utility model relates to the technical field of four-thread overlock machine, and in particular to a four-thread overlock machine with adjustable fabric overlock width. Background Technology

[0002] In the production of various garments, such as shirts, dresses, and jeans, four-thread overlock machines are used to overlock the edges of cuffs, hems, collars, and trouser legs.

[0003] However, the four-thread overlock machine in the relevant technology still has shortcomings. It is inconvenient to effectively adjust the width of the overlock. For different styles and designs of clothing, the requirements for the width of the overlock vary, which cannot meet the diverse production needs of garment factories. Therefore, we propose a four-thread overlock machine with adjustable fabric overlock width to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a four-thread overlock machine with adjustable fabric overlock width. It features a precision adjustment mechanism that allows for effective and accurate adjustment of the overlock width, meeting the diverse production needs of garment factories and ensuring the quality and aesthetics of garments. The thread holder mechanism facilitates the placement of four sewing thread spools, ensuring a smooth supply of sewing thread and improving the smoothness of four-thread overlock sewing. It also facilitates the disassembly and replacement of sewing thread spools.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a four-thread overlock machine with adjustable fabric overlock width, comprising a base, a four-thread overlock machine body fixedly connected to the top of the base, a sewing needle provided on the four-thread overlock machine body, a guide plate movably provided on the top of the base, a precision adjustment mechanism provided between the guide plate and the base, and a thread rack mechanism for placing sewing threads provided on the top of the four-thread overlock machine body.

[0006] By adopting the above technical solution, the precision adjustment mechanism includes a groove formed on the top of the base, a threaded rod rotatably connected to the inner walls of both sides of the groove, a driven bevel gear fixedly sleeved on the outer side of the threaded rod, a top plate fixedly connected inside the groove, a drive shaft rotatably connected to the top of the top plate, a driving bevel gear fixedly connected to the bottom end of the drive shaft, the driving bevel gear meshing with the driven bevel gear, a drive block threadedly sleeved on the outer side of the threaded rod, a support plate fixedly connected to the top of the drive block, a connecting plate fixedly connected to one side of the support plate, the connecting plate fixedly connected to one side of the guide plate, a scale fixedly connected to the bottom of the base, and the guide plate slidably connected to the top of the base.

[0007] By adopting the above technical solution, the guide plate can guide and limit the position of the fabric edge. The distance between the guide plate and the sewing needle is the overlock width. When the overlock width needs to be adjusted, the drive shaft is rotated by the anti-slip texture and knob. The drive shaft drives the rotation of the active bevel gear, which in turn drives the rotation of the driven bevel gear and the threaded rod. The threaded rod drives the lateral movement of the drive block, support plate, connecting plate, and guide plate. The lateral position of the guide plate can be precisely adjusted by the scale, which in turn allows for precise adjustment of the distance between the guide plate and the sewing needle, and thus precise adjustment of the overlock width. This can meet the diverse overlock production needs of garment factories and ensure the quality and aesthetics of the garments.

[0008] A further feature of this invention is that a knob is fixedly connected to the top of the drive shaft, and the outer side of the knob is provided with anti-slip texture.

[0009] By adopting the above technical solution, it is beneficial to rotate the drive shaft.

[0010] A further feature of this invention is that: a bearing 1 is fixedly connected to the inner walls of both sides of the groove; the threaded rod is fixedly sleeved inside the inner rings of the two bearing 1s; a bearing 2 is fixedly sleeved inside the top plate; and the drive shaft is fixedly sleeved inside the inner ring of the bearing 2.

[0011] By adopting the above technical solution, it is beneficial to support the drive shaft and the threaded rod, making their rotation more stable and smooth.

[0012] A further feature of this invention is that the thread frame mechanism includes a column fixedly connected to the top of the four-thread overlock machine body, a support plate fixedly connected to the top of the column, four vertical rods for placing sewing thread rolls fixedly connected to the top of the support plate, a central column fixedly connected to the top of the support plate, a base plate fixedly sleeved on the outer side of the central column, a limiting plate movably placed on the top of the base plate and the tops of the four vertical rods, and a nut threadedly sleeved on the outer side of the central column, the nut movably abutting against the top of the limiting plate.

[0013] By adopting the above technical solution, four sewing thread rolls are placed on the outside of the vertical rod and on the support plate. To prevent the sewing thread rolls from detaching from the vertical rod, a limiting plate is placed on the central column and abuts against the top of the base plate. Finally, the nut is tightened so that the nut is firmly abutted against the top of the limiting plate. Through the limiting plate, the sewing thread rolls are effectively prevented from detaching during four-thread overlock sewing, thus ensuring the smoothness of four-thread overlock sewing. When the sewing thread rolls are used up, the steps above are reversed to loosen the nuts, remove the limiting plate, and the used sewing thread rolls can be removed and replaced.

[0014] A further feature of this invention is that the top of the limiting plate has a through hole, and the central column is movably sleeved within the through hole.

[0015] By adopting the above technical solution, it is convenient to fit the limiting plate on the outside of the central column.

[0016] A further feature of this invention is that the outer side of the central column is provided with an external thread, and the nut is threaded onto the outer side of the external thread.

[0017] By adopting the above technical solution, it is convenient to thread the nut onto the outside of the central column.

[0018] The beneficial effects of this utility model are:

[0019] 1. This utility model uses a guide plate to guide and limit the position of the fabric edge. The distance between the guide plate and the sewing needle is the overlock width. When the overlock width needs to be adjusted, the drive shaft is rotated by the anti-slip texture and knob. The drive shaft drives the rotation of the active bevel gear, which in turn drives the rotation of the driven bevel gear and the threaded rod. The threaded rod drives the lateral movement of the drive block, support plate, connecting plate, and guide plate. The lateral position of the guide plate can be precisely adjusted by a scale, which in turn allows for precise adjustment of the distance between the guide plate and the sewing needle, and thus precise adjustment of the overlock width. This can meet the diverse overlock production needs of garment factories and ensure the quality and aesthetics of the garments.

[0020] 2. In this invention, four sewing thread rolls are placed on the outside of the vertical rod and on the support plate. To prevent the sewing thread rolls from detaching from the vertical rod, a limiting plate is placed on the central column and abuts against the top of the base plate. Finally, the nut is tightened so that the nut is firmly abutting against the top of the limiting plate. Through the limiting plate, the sewing thread rolls are effectively prevented from detaching during four-thread overlock sewing, thus ensuring the smoothness of four-thread overlock sewing. When the sewing thread rolls are used up, the steps above are reversed to loosen the nuts, remove the limiting plate, and the used sewing thread rolls can be removed and replaced.

[0021] 3. This utility model, through a precise adjustment mechanism, can effectively and accurately adjust the width of the overlock edge, which can meet the diverse production needs of garment factories, ensure the quality and aesthetics of garments, and facilitate the placement of four sewing thread spools through the thread frame mechanism, ensuring a smooth supply of sewing thread, improving the smoothness of four-thread overlock sewing, and also facilitating the disassembly and replacement of sewing thread spools. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a four-thread overlock machine with adjustable fabric overlock width proposed in this utility model;

[0024] Figure 2 This is a partial sectional view of the base of a four-thread overlock machine with adjustable fabric overlock width proposed in this utility model.

[0025] Figure 3 for Figure 2 A schematic diagram of the structure of part A;

[0026] Figure 4 This is a sectional perspective view of the thread frame mechanism of a four-thread overlock machine with adjustable fabric overlock width proposed in this utility model.

[0027] In the diagram: 1. Base; 2. Four-thread overlock machine body; 3. Sewing needle; 4. Guide plate; 5. Precision adjustment mechanism; 6. Thread frame mechanism; 501. Groove; 502. Threaded rod; 503. Drive block; 504. Support plate; 505. Connecting plate; 506. Scale; 507. Bearing 1; 508. Driven bevel gear; 509. Driven bevel gear; 510. Top plate; 511. Bearing 2; 512. Drive shaft; 513. Knob; 514. Anti-slip texture; 61. Column; 62. Support plate; 63. Vertical rod; 64. Center column; 65. Chassis; 66. Limiting plate; 67. Nut; 68. External thread; 69. Through hole. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] See Figure 1 — Figure 4This utility model provides a four-thread overlock machine with adjustable fabric overlock width, including a base 1, a four-thread overlock machine body 2 fixedly connected to the top of the base 1, a sewing needle 3 provided on the four-thread overlock machine body 2, a guide plate 4 movably provided on the top of the base 1, a precision adjustment mechanism 5 provided between the guide plate 4 and the base 1, and a thread rack mechanism 6 for placing sewing threads provided on the top of the four-thread overlock machine body 2.

[0030] Specifically, the precision adjustment mechanism 5 includes a groove 501 on the top of the base 1. The same threaded rod 502 is rotatably connected to the inner walls of both sides of the groove 501. A driven bevel gear 508 is fixedly sleeved on the outer side of the threaded rod 502. A top plate 510 is fixedly connected inside the groove 501. A drive shaft 512 is rotatably connected to the top of the top plate 510. A drive bevel gear 509 is fixedly connected to the bottom end of the drive shaft 512. The drive bevel gear 509 meshes with the driven bevel gear 508. A drive block 503 is threadedly sleeved on the outer side of the threaded rod 502. A support plate 504 is fixedly connected to the top of the drive block 503. A connecting plate 505 is fixedly connected to one side of the support plate 504. The connecting plate 505 is fixedly connected to one side of the guide plate 4.

[0031] Specifically, a scale 506 is fixedly connected to the bottom of the base 1, and a guide plate 4 is slidably connected to the top of the base 1.

[0032] Specifically, bearings 507 are fixedly connected to the inner walls on both sides of the groove 501, and threaded rods 502 are fixedly sleeved inside the inner rings of the two bearings 507.

[0033] Specifically, a knob 513 is fixedly connected to the top of the drive shaft 512, and anti-slip texture 514 is provided on the outer side of the knob 513.

[0034] Specifically, a bearing 511 is fixedly sleeved inside the top plate 510, and a drive shaft 512 is fixedly sleeved inside the inner ring of the bearing 511.

[0035] Specifically, the thread frame mechanism 6 includes a column 61 fixedly connected to the top of the four-thread overlock machine body 2, a support plate 62 fixedly connected to the top of the column 61, and four vertical rods 63 fixedly connected to the top of the support plate 62 for placing sewing thread rolls.

[0036] Specifically, a central column 64 is fixedly connected to the top of the support plate 62, and a base plate 65 is fixedly sleeved on the outside of the central column 64. The top of the base plate 65 and the top of the four vertical rods 63 are movably placed with the same limiting plate 66. A nut 67 is threaded on the outside of the central column 64, and the nut 67 movably abuts against the top of the limiting plate 66.

[0037] Specifically, the top of the limiting plate 66 has a through hole 69, and the central post 64 is movably fitted inside the through hole 69.

[0038] Specifically, the outer side of the central column 64 is provided with an external thread 68, and the nut 67 is threaded onto the outer side of the external thread 68.

[0039] In use, this invention guides and limits the position of the fabric edge using the guide plate 4. The distance between the guide plate 4 and the sewing needle 3 is the overlock width. When the overlock width needs to be adjusted, the drive shaft 512 is rotated via the anti-slip texture 514 and the knob 513. The drive shaft 512 drives the rotation of the active bevel gear 509, which in turn drives the rotation of the driven bevel gear 508 and the threaded rod 502. The threaded rod 502 drives the lateral movement of the drive block 503, the support plate 504, the connecting plate 505, and the guide plate 4. The lateral position of the guide plate 4 can be precisely adjusted using the scale 506, thereby precisely adjusting the distance between the guide plate 4 and the sewing needle 3, and thus precisely adjusting the overlock width. This meets the diverse overlock production needs of garment factories, ensuring the quality and aesthetics of the garments.

[0040] Place four sewing thread rolls around the outside of the vertical rod 63 and onto the support plate 62. To prevent the sewing thread rolls from detaching from the vertical rod 63, place the limiting plate 66 onto the central post 64 and abut against the top of the base plate 65. Finally, tighten the nut 67 so that the nut 67 is firmly abutted against the top of the limiting plate 66. The limiting plate 66 effectively prevents the sewing thread rolls from detaching during four-thread overlock sewing, thus ensuring the smoothness of four-thread overlock sewing. After the sewing thread rolls are used up, reverse the above steps, loosen the nut 67, remove the limiting plate 66, and then remove the used sewing thread rolls for replacement.

Claims

1. A four-thread overlock machine with adjustable fabric overlock width, characterized in that, Includes a base (1), a four-thread overlock machine body (2) is fixedly connected to the top of the base (1), a sewing needle (3) is provided on the four-thread overlock machine body (2), a guide plate (4) is movably provided on the top of the base (1), a precision adjustment mechanism (5) is provided between the guide plate (4) and the base (1), and a thread rack mechanism (6) for placing sewing threads is provided on the top of the four-thread overlock machine body (2).

2. The four-thread overlock machine with adjustable fabric overlock width according to claim 1, characterized in that: The precision adjustment mechanism (5) includes a groove (501) on the top of the base (1). The same threaded rod (502) is rotatably connected to the inner walls of both sides of the groove (501). A driven bevel gear (508) is fixedly sleeved on the outer side of the threaded rod (502). A top plate (510) is fixedly connected inside the groove (501). A drive shaft (512) is rotatably connected to the top of the top plate (510). A drive bevel gear (509) is fixedly connected to the bottom end of the drive shaft (512). The drive bevel gear (509) meshes with the driven bevel gear (508). A drive block (503) is threadedly sleeved on the outer side of the threaded rod (502). A support plate (504) is fixedly connected to the top of the drive block (503). A connecting plate (505) is fixedly connected to one side of the support plate (504). The connecting plate (505) is fixedly connected to one side of the guide plate (4).

3. The four-thread overlock machine with adjustable fabric overlock width according to claim 2, characterized in that: A scale (506) is fixedly connected to the bottom of the base (1), and the guide plate (4) is slidably connected to the top of the base (1).

4. A four-thread overlock machine with adjustable fabric overlock width according to claim 2, characterized in that: Bearings (507) are fixedly connected to the inner walls on both sides of the groove (501), and the threaded rod (502) is fixedly sleeved inside the inner rings of the two bearings (507).

5. A four-thread overlock machine with adjustable fabric overlock width according to claim 2, characterized in that: A knob (513) is fixedly connected to the top of the drive shaft (512), and anti-slip texture (514) is provided on the outer side of the knob (513).

6. A four-thread overlock machine with adjustable fabric overlock width according to claim 2, characterized in that: The top plate (510) is fixedly fitted with a bearing (511), and the drive shaft (512) is fixedly fitted inside the inner ring of the bearing (511).

7. A four-thread overlock machine with adjustable fabric overlock width according to claim 1, characterized in that: The thread frame mechanism (6) includes a column (61) fixedly connected to the top of the four-thread overlock machine body (2), a support plate (62) fixedly connected to the top of the column (61), and four vertical rods (63) fixedly connected to the top of the support plate (62) for placing sewing thread rolls.

8. A four-thread overlock machine with adjustable fabric overlock width according to claim 7, characterized in that: A central column (64) is fixedly connected to the top of the support plate (62). A base plate (65) is fixedly sleeved on the outside of the central column (64). The top of the base plate (65) and the top of the four vertical rods (63) are movably placed on the same limiting plate (66). A nut (67) is threaded on the outside of the central column (64). The nut (67) movably abuts against the top of the limiting plate (66).

9. A four-thread overlock machine with adjustable fabric overlock width according to claim 8, characterized in that: The top of the limiting plate (66) is provided with a through hole (69), and the central column (64) is movably sleeved in the through hole (69).

10. A four-thread overlock machine with adjustable fabric overlock width according to claim 8, characterized in that: The outer side of the central column (64) is provided with an external thread (68), and the nut (67) is threaded on the outer side of the external thread (68).

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