Four-needle six-thread presser foot capable of adapting to cloth with different thicknesses

Abstract

The utility model relates to clothing machinery, in particular to a four-needle six-thread presser foot capable of adapting to cloth with different thicknesses, which comprises a left foot plate and a right foot plate, a guide top plate is arranged between the left foot plate and the right foot plate, and the gradient of the guide top plate and the minimum distance from the guide top plate to the bottom surface of the foot are adaptive to the thickest cloth. A groove body is formed in the bottom surface of the left foot plate corresponding to the guide top plate, and a screw hole is formed in the bottom of the groove body; the adjusting plate comprises a base part corresponding to the groove body and a guide part extending from the base part to the guide top plate side, the top surface of the guide part fits the gradient of the guide top plate and is attached to the guide top plate, and the minimum distance between the bottom surface of the guide part and the bottom surface of the foot adapts to the thin cloth; a counterbore is formed in the base part, and a screw penetrates through the counterbore to be in threaded connection with the screw hole. Compared with the prior art, the presser foot can adapt to cloth with different thicknesses, different presser feet do not need to be replaced, and therefore the universality of sewing machinery is improved.

Description

Technical Field

[0001] The utility model relates to a clothing machine, in particular to a four-needle six-thread presser foot which can adapt to fabrics of different thicknesses. Background Art

[0002] In the garment manufacturing industry, the efficiency and adaptability of sewing machinery are key factors in ensuring a smooth production process. Traditional sewing machines often struggle to meet the stringent requirements for seam smoothness, tightness, and elasticity for highly elastic knitted fabrics, such as sportswear, underwear, and swimwear. To address this, the "four-needle, six-thread" stitching machine was developed. Its unique presser foot design enables efficient and high-quality sewing of fabrics.

[0003] like Figure 1-2 As shown, the traditional four-needle six-thread presser foot includes a left foot plate 1 and a right foot plate 2, each of which is equipped with an elastic shoe 3. A seam channel 4 for the cloth is formed between the left foot plate 1 and the right foot plate 2. A guide top plate 5 is also provided. The distance between the guide top plate 5 and the bottom surface of the left foot plate 1 or the right foot plate 2 gradually decreases from front to back to form a slope, thereby guiding the cloth in the vertical direction. The slope and the minimum distance are adapted to the thickness of the cloth.

[0004] However, existing technologies present a significant problem: sewing fabrics of varying thicknesses often requires replacing the presser foot and re-adjusting the machine. This process is not only time-consuming but also increases production costs and impacts efficiency. Especially in large-scale production environments, frequent presser foot replacement and machine adjustments significantly limit the flexibility and responsiveness of the production process. Utility Model Content

[0005] In response to the above technical problems, the present invention proposes an improved four-needle six-thread presser foot, which can switch between fabrics of different thicknesses through simple operations without having to replace the presser foot, thereby improving the versatility and production efficiency of the sewing machine. To achieve the above objectives, the technical solutions adopted by the present invention are:

[0006] A four-needle six-thread presser foot that can adapt to fabrics of different thicknesses, comprising a left foot plate and a right foot plate, a guide top plate being provided between the left and right foot plates, the slope of which and the minimum distance from the sole surface of the foot being adapted to the thickest fabric, and different from the prior art in that a groove body is provided on the sole surface of the left foot plate corresponding to the guide top plate, a screw hole being provided at the bottom of the groove body; an adjustment plate is also provided, the adjustment plate comprising a base corresponding to the groove body, a guide portion extending toward the guide top plate from the base, the top surface of the guide portion fitting the slope of the guide top plate and being in contact with it, the bottom surface of the guide portion and the minimum distance from the sole surface of the foot being adapted to thin fabrics; a countersunk hole is provided on the base, and a screw passes through the countersunk hole and is screwed to the screw hole.

[0007] Furthermore, a chamfer is provided on the inner side of the bottom of the groove body, and a reinforcement portion corresponding to the chamfer is provided at the junction of the base portion and the guide portion.

[0008] Furthermore, the thickness of the base is less than or equal to the depth of the trough body.

[0009] Furthermore, a guiding arc surface is provided on the bottom surface of the guiding portion.

[0010] Furthermore, elastic shoes are respectively installed on the left foot plate and the right foot plate, and there is a buffer space between the elastic shoes and the left foot plate or the right foot plate.

[0011] Furthermore, the rear end of the elastic shoe is respectively buckled with the left foot plate or the right foot plate, and the front end of the elastic shoe is respectively fixed to the left foot plate or the right foot plate by screws.

[0012] Compared with the prior art, the beneficial technical effects of the present invention are:

[0013] Enhanced versatility: The presser foot of the utility model can adapt to fabrics of different thicknesses without the need to replace different presser feet, thereby improving the versatility of the sewing machine.

[0014] Easy to operate: The process of switching the presser foot to adapt to different thicknesses of fabrics is simplified to a simple operation of adding or removing the corresponding adjustment plate, which greatly reduces the time and labor intensity required to replace the presser foot.

[0015] Improved production efficiency: Due to the reduction in time spent on changing presser feet and re-adjusting the machine, production efficiency has been significantly improved, especially in production environments where frequent changes in fabric thickness are required.

[0016] Cost saving: Reduce the extra cost of replacing the presser foot, and also reduce the material waste caused by improper debugging.

[0017] Strong adaptability: The design of the adjustment plate allows the presser foot to be finely adjusted according to the thickness of the fabric, making it adaptable to a wider variety of fabrics and expanding the application range of the presser foot.

[0018] Easy maintenance: Due to the reasonable structural design, maintenance and care become simpler, which helps to extend the service life of the presser foot.

[0019] User-friendly: The improved design takes into account the operator's usage habits and convenience, allowing operators to quickly get started and improve job satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of an existing four-needle six-thread presser foot.

[0021] Figure 2 This is a schematic diagram of the structure of the existing four-needle six-thread presser foot from another perspective with the elastic shoe hidden.

[0022] Figure 3 This is a structural diagram of the utility model without the adjustment plate and with the elastic shoe hidden.

[0023] Figure 4-6 It is a structural schematic diagram of the adjustment plate of the utility model from different viewing angles.

[0024] Figure 7 This is a structural diagram of the utility model after the adjustment plate is installed and the elastic shoe is hidden.

[0025] Figure 8 It is a structural schematic diagram of the utility model with an adjustment plate added.

[0026] Numbers in the figure: left foot plate -1, right foot plate -2, elastic shoe -3, joint channel -4, guide top plate -5, trough body -6, chamfer -61, screw hole -7, adjustment plate -8, base -81, guide part -82, countersunk hole -83, reinforcement part -84, guide arc surface -85, screw -9. DETAILED DESCRIPTION

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can readily understand the other advantages and benefits of the present invention from the contents disclosed in this specification. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0030] like Figure 3-8 The illustrated embodiment of a four-needle, six-thread presser foot capable of adapting to fabrics of varying thicknesses comprises a left footplate 1 and a right footplate 2. A guide top plate 5 is disposed between the left and right footplates 1 and 2, with a slope and minimum distance from the sole of the foot adapted to the thickest fabric. A groove 6 is defined on the sole of the left footplate 1, corresponding to the guide top plate 5, and a screw hole 7 is defined at the bottom of the groove. The footplate 8 also comprises an adjustment plate 8, comprising a base 81 corresponding to the groove 6 and a guide portion 82 extending toward the guide top plate 5. The top surface of the guide portion 82 conforms to the slope of the guide top plate 5 and is aligned therewith. The bottom surface of the guide portion 82 and the minimum distance from the sole of the foot are adapted to thin fabrics. A countersunk hole 83 is defined in the base 81, through which a screw 9 is threadedly engaged with the screw hole 7. In this embodiment, the thickness of the base 81 is equal to the depth of the groove 6. Elastic shoes 3 are mounted on the left and right footplates 1 and 2, respectively, with a buffer space between the elastic shoes 3 and the left or right footplates 1 and 2. A groove 6 is provided at the bottom of the left footplate 1, with a screw hole 7 at the bottom. An adjustment plate 8, consisting of a base 81 and a guide portion 82, can be installed through this screw hole 7. The top surface of the guide portion 82 of the adjustment plate 8 is designed to match the slope of the guide top plate 5, allowing it to fit snugly against the guide top plate 5. A countersunk hole 83 is provided in the base 81 of the adjustment plate 8, which is secured to the groove 6 by screws 9. When sewing thick fabrics, the adjustment plate 8 can be removed and the original height of the guide top plate 5 can be used. When sewing thin fabrics, the adjustment plate 8 can be reinstalled to adjust to the thickness of the thin fabric. Through the above design, the presser foot of the present invention can quickly adapt to fabrics of varying thicknesses without requiring a complex adjustment process, greatly improving sewing efficiency and fabric sewing quality.

[0031] In another preferred embodiment, the bottom of the trough body 6 is provided with a chamfer 61, and a corresponding reinforcement portion 84 corresponding to the chamfer 61 is provided at the intersection of the base portion 81 and the guide portion 82. The chamfer 61 facilitates installation of the adjustment plate 8 into the trough body 6 by providing a smooth transition, allowing the adjustment plate 8 to smoothly contact the inner surface of the trough body 6. The reinforcement portion 84 is a thickened portion designed to enhance the structural strength and stability of the adjustment plate 8, making the adjustment plate 8 more durable and reducing deformation that may occur during long-term operation.

[0032] In another preferred embodiment, the thickness of the base 81 is less than the depth of the groove 6. The thickness of the base 81 is less than the depth of the groove 6, so that the base 81 does not protrude beyond the sole surface of the left foot plate 1 after installation, maintaining the flatness of the bottom of the presser foot, and the basic functions and performance of the presser foot are not affected.

[0033] In another preferred embodiment, a guide arc surface 85 is provided on the bottom surface of the guide portion 82. The guide arc surface 85 can reduce the friction of the fabric when passing through the guide portion 82, allowing the fabric to slide more smoothly over the presser foot and reduce wear. The arc surface design helps to guide the fabric to move along a smooth curved path, which helps to reduce the stretching or twisting of the fabric and improve the quality of sewing. Since the fabric can pass through the presser foot more smoothly, the continuity and speed of the sewing process may be improved, thereby improving production efficiency. The guide arc surface 85 helps to reduce the uneven stretching of the fabric during the sewing process, thereby reducing wrinkles and unevenness after sewing. During high-speed sewing, the fabric passes through the presser foot faster, and the design of the guide arc surface 85 helps to ensure that the fabric remains stable and accurate when moving at high speed.

[0034] In another preferred embodiment, the rear end of the elastic shoe 3 engages with the left or right footboard 1 or 2, respectively, while the front end of the elastic shoe 3 is secured to the left or right footboard 1 or 2, respectively, via screws 9. This connection arrangement of the elastic shoe 3 allows for quick removal or replacement of the shoe, facilitating maintenance or cleaning. When installing or removing the adjustment plate 8, quick removal of the elastic shoe 3 provides greater ease of operation, making the adjustment process simpler and faster.

[0035] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, such modifications or improvements, without departing from the spirit of the present invention, are within the scope of protection claimed herein.

[0036] Any matters not described in detail in the present invention are prior art or common knowledge in the field.

Claims

1. A four-needle six-thread presser foot that can adapt to fabrics of different thicknesses, comprising a left foot plate (1) and a right foot plate (2), wherein a guide top plate (5) is provided between the left foot plate (1) and the right foot plate (2), the slope of which and the minimum distance from the sole surface of the foot being adapted to the thickest fabric, characterized in that: A groove body (6) is provided on the sole surface of the left foot plate (1) corresponding to the guide top plate (5), and a screw hole (7) is provided at the bottom of the groove body (6); more than one adjustment plate (8) is also provided, and the adjustment plate (8) includes a base (81) corresponding to the groove body (6), a guide portion (82) extending from the base (81) toward the guide top plate (5), the top surface of the guide portion (82) fits the slope of the guide top plate (5) and is in contact with it, and the bottom surface of the guide portion (82) and the minimum distance from the sole surface of the foot are adapted to fabrics of different thicknesses; a countersunk hole (83) is provided on the base (81), and a screw (9) passes through the countersunk hole (83) and is screwed to the screw hole (7).

2. The four-needle six-thread presser foot that can adapt to fabrics of different thicknesses according to claim 1, characterized in that: A chamfer (61) is provided on the inner side of the bottom of the groove body (6), and a reinforcement portion (84) corresponding to the chamfer (61) is provided at the junction of the base portion (81) and the guide portion (82).

3. The four-needle six-thread presser foot that can adapt to fabrics of different thicknesses according to claim 1, characterized in that: The thickness of the base (81) is less than or equal to the depth of the trough body (6).

4. The four-needle six-thread presser foot that can adapt to fabrics of different thicknesses according to claim 1, characterized in that: A guiding arc surface (85) is provided on the bottom surface of the guiding portion (82).

5. The four-needle six-thread presser foot that can adapt to fabrics of different thicknesses according to claim 1, characterized in that: Elastic shoes (3) are respectively installed on the left footboard (1) and the right footboard (2), and a buffer space exists between the elastic shoes (3) and the left footboard (1) or the right footboard (2).

6. The four-needle six-thread presser foot that can adapt to fabrics of different thicknesses according to claim 5, characterized in that: The rear end of the elastic shoe (3) is respectively engaged with the left foot plate (1) or the right foot plate (2), and the front end of the elastic shoe (3) is respectively fixed to the left foot plate (1) or the right foot plate (2) via screws (9).

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