Feeding mechanism for a sewing machine

Abstract

The application relates to the technical field of garment overlock, and provides a sewing machine feeding mechanism, which comprises a fixing assembly, an overlock guide plate and an adjusting assembly, the fixing assembly is used for mounting the overlock guide plate on the sewing machine; the overlock guide plate is provided with a bending sliding part and a bending fixed part, the bending sliding part is slidingly mounted on one side of the overlock guide plate, and the adjusting assembly is used for changing the spacing between the bending sliding part and the bending fixed part. The sewing machine feeding mechanism can change the minimum spacing between the bending sliding part and the bending fixed part.

Description

Technical Field

[0001] This application relates to the field of garment edging technology, and in particular to a sewing machine feeding mechanism. Background Technology

[0002] In the garment processing industry, especially when binding the edges of clothing, binding machines have become an indispensable auxiliary device for sewing machines. Existing binding machines typically include a fixing component and a binding guide plate with a specific shape. The main body of the binding guide plate is elongated, with both ends bent to the same side to form two opposing bends. The distance between these two bends gradually decreases along the feeding direction, forming a tapering channel.

[0003] Its working principle is as follows: The operator first guides the rolled binding tape into the binding guide plate. As the tape travels along the guide plate to the position where the gap between the two bends is smallest, its shape has been folded to wrap around the edge of the fabric to be bound (such as a garment piece). At this point, the fabric to be bound is fed into this smallest gap, thus being initially held between the folded binding tape. Subsequently, this composite structure is fed together under the presser foot and feed dog of the sewing machine, where the needle completes the final sewing and fixing.

[0004] However, since the minimum gap between the two bends is fixed, it may be too tight when processing thicker fabrics, leading to excessive friction and clamping force between the binding tape and the main fabric. This not only increases feeding resistance and disrupts the sewing process, but more seriously, it easily causes wrinkles, twisting, and other quality problems at the sewing stitches, affecting the product's appearance and comfort. Conversely, when processing thinner fabrics, the fixed minimum gap may be too loose, failing to effectively pre-clamp and position the binding tape and the main fabric. This can cause relative slippage and misalignment between the binding tape and the main fabric during sewing, resulting in uneven binding width, asymmetry, or even loosening and detachment, making it difficult to guarantee product quality. Therefore, a feeding mechanism that allows for easy adjustment of the gap between the two bends is needed. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a sewing machine feeding mechanism.

[0006] The sewing machine feeding mechanism provided in this application adopts the following technical solution: A sewing machine feeding mechanism, installed on a sewing machine, includes a fixing component, an overlock guide plate, and an adjusting component. The fixing component is used to install the overlock guide plate on the sewing machine. The overlock guide plate is provided with a bending sliding part and a bending fixing part. The bending sliding part is slidably installed on one side of the overlock guide plate. The adjusting component is used to change the distance between the bending sliding part and the bending fixing part.

[0007] By adopting the above technical solution and using the adjustable components, the minimum distance between the bending sliding part and the bending fixing part can be changed. This allows the operator to adjust the gap in real time according to the thickness of the current sewing fabric (such as from heavy jeans to thin silk), thereby obtaining the most suitable clamping force; avoiding problems such as uneven sewing process, wrinkles, twisting, and uneven binding width caused by the gap being fixed too tight or too loose, thus ensuring sewing quality and product qualification rate.

[0008] Optionally, the adjustment assembly includes a mounting base and a screw. The mounting base is installed on the side of the edge guide plate away from the bending and sliding part, and the screw is vertically installed on the mounting base. One end of the screw is rotatably connected to the upper surface of the bending and sliding part.

[0009] By adopting the above technical solution, rotating the screw once causes the bending and sliding part to move only a tiny distance of one screw pitch, allowing the operator to make extremely precise and continuous control over the gap, thereby achieving precise adjustment of the clamping force.

[0010] Optionally, the edge-binding guide plate has a vertical sliding hole, and an extension is provided on one side of the bending sliding part. The extension passes through the sliding hole and is exposed on the side of the edge-binding guide plate away from the bending sliding part; the screw is rotatably connected to the extension.

[0011] By adopting the above technical solution, the adjusting components such as the screw and mounting base are located on the back or outside of the binding guide plate, completely avoiding the normal working area of ​​the sewing machine needle, presser foot, feed dog, and operator's hands. This ensures that the adjustment operation will not interfere with the sewing process, such as threading and placing the fabric.

[0012] Optionally, the mounting base has a vertically sliding slide rod, one end of which is fixed to the upper surface of the bent sliding part.

[0013] By adopting the above technical solution, the slide bar can usually be connected to the bending and sliding part by simple fixing. The assembly process is intuitive and fast, thereby reducing the cost of parts processing.

[0014] Optionally, a first magnetic sheet is provided on one side of the bending and sliding part, and a second magnetic sheet is provided on the edge guide plate for cooperating with the first magnetic sheet.

[0015] By adopting the above technical solution, the bending and sliding part can be kept in contact with the edge guide plate.

[0016] Optionally, a rotating part is installed at the end of the screw away from the bending and sliding part.

[0017] By adopting the above technical solution, it is convenient for operators to rotate the screw to adjust the distance between the bending sliding part and the bending fixing part.

[0018] Optionally, a scale is vertically mounted on the mounting base.

[0019] By adopting the above technical solution, it is easy to observe the spacing of the bending sliding plate adjustment.

[0020] Optionally, it also includes a feeding assembly, which includes a feeding roller and two clamping rollers. The feeding roller is vertically mounted on the sewing machine, and the binding fabric is wound onto the surface of the feeding roller. The two clamping rollers are vertically mounted on the sewing machine, and the binding fabric is clamped between the two clamping rollers.

[0021] By adopting the above technical solution, the feeding roller of the feeding assembly can roll up the edge-binding fabric, which is convenient for storage and transportation. The two clamping rollers can clamp the edge-binding fabric to ensure that the edge-binding fabric is in a taut state during the transportation process, thereby improving the stability of the transportation process.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The minimum gap between the bending sliding part and the bending fixing part can be changed by the set adjustment component; this allows the operator to adjust the gap according to the thickness of the current sewing fabric, avoiding problems such as uneven sewing process, wrinkles and twists, and uneven binding width caused by the gap being too tight or too loose, thus ensuring sewing quality and product qualification rate; 2. By setting a screw, rotating the screw once will cause the bending and sliding part to move only a tiny distance of one screw pitch, allowing the operator to make extremely fine and continuous control over the gap, thereby achieving precise adjustment of the clamping force. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of Example 1; Figure 2 This is a schematic diagram of the adjustment component in Example 1; Figure 3 yes Figure 1 A magnified view of a portion at point a; Figure 4 This is a structural schematic diagram of Example 2; Figure 5 yes Figure 4 A magnified view of a portion at point b.

[0024] Explanation of reference numerals in the attached drawings: 1. Edge guide plate; 11. Bending and sliding part; 12. Bending and fixing part; 13. Mounting plate; 14. Sliding hole; 15. Extension part; 2. Adjustment component; 21. Mounting seat; 22. Screw; 23. Rotating part; 24. Slide rod; 3. Fixing component; 4. Material feeding component; 41. Material feeding roller; 42. Clamping roller; 43. Connecting seat; 44. Movable seat; 45. Slide groove; 46. Locking bolt; 5. Sewing machine. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0026] Example 1: This application discloses a pocket trouser.

[0027] Reference Figure 1 A pocket trouser includes a fixing component 3, an edge guide plate 1, an adjusting component 2, and a feeding component 4. The fixing component 3 mounts the edge guide plate 1 onto a sewing machine 5. The fixing component 3 is configured as a fastening bolt. An mounting plate 13 is provided on one side of the edge guide plate 1. The fastening bolt is used to fix the mounting plate 13 to the sewing machine 5.

[0028] Reference Figure 2 The binding guide plate 1 is provided with a bending sliding part 11 and a bending fixing part 12. The bending sliding part 11 is slidably installed on one side of the binding guide plate 1, and the mounting plate 13 is located on the side of the binding guide plate 1 away from the bending sliding part 11. The bending sliding part 11 and the bending fixing part 12 have the same shape, and a gradually narrowing channel for folding the binding fabric is formed between the bending sliding part 11 and the bending fixing part 12.

[0029] The adjusting component 2 is used to change the distance between the bending sliding part 11 and the bending fixing part 12. The adjusting component 2 includes a mounting base 21 and a screw 22. The mounting base 21 is mounted above the mounting plate 13. The mounting base 21 is usually a metal block, which is fixed to the edge guide plate 1 by bolts or welding. The screw 22 is vertically mounted on the mounting base 21. The screw 22 is generally made of stainless steel, which has good wear resistance and corrosion resistance.

[0030] In this embodiment, the edge-binding guide plate 1 has a vertical sliding hole 14, and an extension 15 is provided on one side of the bent sliding portion 11. The extension 15 passes through the sliding hole 14 and is exposed on the side of the edge-binding guide plate 1 away from the bent sliding portion 11. The screw 22 is rotatably connected to the extension 15. The sliding hole 14 is a through hole machined on the edge-binding guide plate 1, and its shape is generally rectangular. The extension 15 is a metal strip extending from one side of the bent sliding portion 11, and its size is adapted to the sliding hole 14 so that it can slide smoothly within the sliding hole 14.

[0031] A rotating part 23 is installed at the end of the screw 22 away from the bending and sliding part 11, and the outer wall of the rotating part 23 is covered with a rubber layer; the rotating part 23 is provided to facilitate the rotation of the screw 22.

[0032] A first magnetic sheet is provided on one side of the bending sliding part 11, and a second magnetic sheet is provided on the edge guide plate 1 for cooperating with the first magnetic sheet. The first and second magnetic sheets are generally permanent magnets; the cooperation of the first and second magnetic sheets enables the bending sliding part 11 to maintain a contact state with the edge guide plate 1, increasing the stability of the bending sliding part 11 installed on the edge guide plate 1.

[0033] In other embodiments, a scale is vertically mounted on the mounting base 21. The scale is generally a metal or plastic strip with graduations, fixed to the mounting base 21 by adhesive or bolts. The purpose of the scale is to facilitate the operator in accurately adjusting the distance between the bending sliding part 11 and the bending fixing part 12, thereby improving the adjustment accuracy.

[0034] Reference Figure 3 The feeding assembly 4 includes a feeding roller 41 and two clamping rollers 42. The feeding roller 41 is vertically mounted on the sewing machine 5, and the binding fabric is wound onto the surface of the feeding roller 41. The feeding roller 41 is typically a cylindrical metal or plastic roller with a smooth surface to reduce friction with the binding fabric. The feeding roller 41 is mounted on the sewing machine 5 via bearings and can rotate freely.

[0035] The sewing machine 5 is equipped with a connecting seat 43, and two clamping rollers 42 are vertically installed on the connecting seat 43. The binding fabric is clamped between the two clamping rollers 42. The clamping rollers 42 are generally cylindrical, and each of the two clamping rollers 42 has a movable seat 44 rotatably installed at one end. One of the movable seats 44 is fixed to the mounting seat 21. The upper surface of the connecting seat 43 is provided with a groove 45. The other movable seat 44 is slidably installed in the groove 45, and the movable seat 44 is provided with a locking bolt 46, which is used to abut against the inner wall of the groove 45.

[0036] The implementation principle of a pocket trouser in this application embodiment is as follows: By rotating the screw 22, the minimum gap between the bending sliding part 11 and the bending fixing part 12 can be changed. This allows the operator to adjust the gap in real time according to the thickness of the current sewing fabric (such as from heavy jeans to light silk), thereby obtaining the most suitable clamping force. This avoids problems such as uneven sewing process, wrinkles, twisting, and uneven edge width caused by the gap being fixed too tight or too loose, thus ensuring sewing quality and product qualification rate.

[0037] Example 2: This application discloses a pocket trouser.

[0038] Reference Figure 4 and Figure 5The difference between Embodiment 2 and Embodiment 1 is that one end of the mounting base 21 extends above the side of the guide plate 1 with the bent sliding portion 11, and the end of the screw 22 away from the rotating portion 23 is rotatably connected to the upper surface of the bent sliding portion 11; a sliding rod 24 is slidably mounted on the mounting base 21, and one end of the sliding rod 24 is fixed to the upper surface of the bent sliding portion 11. The sliding rod 24 is generally a cylindrical metal rod, and a sliding hole 14 adapted to the sliding rod 24 is provided on the mounting base 21, allowing the sliding rod 24 to slide up and down within the sliding hole 14. The function of the sliding rod 24 is to guide the movement of the bent sliding portion 11, making its movement more stable and preventing wobbling or deviation.

[0039] The slide bar 24 can usually be connected to the bending sliding part 11 by simple fixing (such as screw locking or welding), which improves the ease of installation; and avoids processing on the edge guide plate 1, thus reducing costs.

[0040] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A feeding mechanism for a sewing machine, installed on a sewing machine (5), characterized in that: The assembly includes a fixing component (3), an edge guide plate (1), and an adjusting component (2). The fixing component (3) is used to install the edge guide plate (1) onto the sewing machine (5). The edge guide plate (1) is provided with a bending sliding part (11) and a bending fixing part (12). The bending sliding part (11) is slidably installed on one side of the edge guide plate (1). The adjusting component (2) is used to change the distance between the bending sliding part (11) and the bending fixing part (12). The adjusting component (2) includes a mounting base (21) and a screw (22). The mounting base (21) is installed on the side of the edge guide plate (1) away from the bending sliding part (11). The screw (22) is vertically installed on the mounting base (21). One end of the screw (22) is rotatably connected to the upper surface of the bending sliding part (11).

2. The feeding mechanism of a sewing machine (5) according to claim 1, characterized in that: The edge guide plate (1) has a vertical sliding hole (14), and an extension (15) is provided on one side of the bending sliding part (11). The extension (15) passes through the sliding hole (14) and is exposed on the side of the edge guide plate (1) away from the bending sliding part (11). The screw (22) is rotatably connected to the extension (15).

3. The feeding mechanism of a sewing machine (5) according to claim 1, characterized in that: The mounting base (21) has a vertically sliding slide rod (24), one end of which is fixed to the upper surface of the bent sliding part (11).

4. The feeding mechanism of a sewing machine (5) according to claim 1, characterized in that: A first magnetic sheet is provided on one side of the bending and sliding part (11), and a second magnetic sheet is provided on the edge guide plate (1) for cooperating with the first magnetic sheet.

5. The feeding mechanism of a sewing machine (5) according to claim 1, characterized in that: A rotating part (23) is installed at the end of the screw (22) away from the bending and sliding part (11).

6. The feeding mechanism of a sewing machine (5) according to claim 1, characterized in that: The mounting base (21) is vertically mounted with a scale.

7. The feeding mechanism of a sewing machine (5) according to claim 1, characterized in that: It also includes a feeding assembly (4), which includes a feeding roller (41) and two clamping rollers (42). The feeding roller (41) is vertically mounted on the sewing machine (5), and the binding fabric is rolled up on the surface of the feeding roller (41). The two clamping rollers (42) are vertically mounted on the sewing machine (5), and the binding fabric is clamped between the two clamping rollers (42).

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