Modular combination presser foot and multi-needle machine

Abstract

The utility model provides a kind of modularization combination presser foot and multi-needle machine, belong to clothing processing equipment technical field, including base plate and several presser foot modules;The upper surface of base plate is fixedly provided with connecting seat, a plurality of needle holes are intervally provided on base plate, each needle hole is respectively one-to-one corresponding with each needle of multi-needle machine;Each presser foot module can be detachably connected to the lower surface of base plate, at least two needle holes are intervally provided on each presser foot module, each needle hole is respectively aligned with one of the upper and lower needle holes;Among them, each presser foot module has the first combination state of forming integral presser foot surface in turn adjacent, also has the second combination state of forming grooved presser foot surface by removing at least one presser foot module in the first combination state, grooved presser foot surface forms strip limiting groove based on the presser foot module removed.The modularization combination presser foot and multi-needle machine provided by the utility model can improve the efficiency and quality of clothing strip processing.

Description

Technical Field

[0001] This utility model belongs to the technical field of garment processing equipment, specifically relating to a modular combination presser foot and multi-needle machine. Background Technology

[0002] A multi-needle sewing machine is a multifunctional sewing device that can meet the sewing process requirements of various styles and effects by using different needle bobbin spacing and thread density, such as pleating, gathering, and elastic gathering. It can also be equipped with auxiliary devices to achieve more functions, such as adding a fabric guide tube to meet the sewing of different widths of sashes (decorative strips on clothing, commonly found in work uniforms and school uniforms).

[0003] When performing sliver sewing on a multi-needle sewing machine, the process requires uniform sliver width and parallel stitches to the fabric edge. However, because the presser foot of a multi-needle sewing machine is an integral structure that can simultaneously accommodate all stitch positions, although the sliver width is fixed by the fabric guide before entering the presser foot, the lack of constraint after the sliver enters below the presser foot not only affects sewing efficiency but also easily leads to quality problems such as inconsistent sliver width and uneven distance between the stitches and the edge of the sliver after sewing. A solution is urgently needed. Utility Model Content

[0004] This utility model provides a modular combination presser foot and multi-needle machine, which aims to improve the efficiency and quality of garment ribbing.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: Firstly, a modular combination presser foot is provided, including a base plate and a plurality of presser foot modules; a connecting seat is fixedly provided on the upper surface of the base plate, and a plurality of needle holes are spaced apart on the base plate, each needle hole corresponding to a needle of a multi-needle machine; each presser foot module is detachably connected to the lower surface of the base plate, and at least two needle-removing holes are spaced apart on each presser foot module, each needle-removing hole being vertically aligned with one of the needle holes; wherein, each presser foot module has a first combination state in which they are sequentially adjacent to form an integral presser foot surface, and also has a second combination state in which at least one presser foot module is removed in the first combination state to form a grooved presser foot surface, the grooved presser foot surface forming a climbing bar limiting groove based on the removed presser foot module.

[0006] In conjunction with the first aspect, in one possible implementation, both ends of the presser foot module are provided with upwardly curved flexible connectors, and the two flexible connectors are respectively engaged with the front and rear edges of the substrate.

[0007] In some embodiments, the presser foot module includes a rigid presser foot plate and two flexible connectors respectively vulcanized at both ends of the rigid presser foot plate; the rigid presser foot plate conforms to the lower surface of the substrate and is provided with pin holes.

[0008] For example, both ends of the rigid pressure foot plate are provided with connecting ribs that extend into the corresponding flexible connector, and the connecting ribs are provided with through holes.

[0009] For example, the substrate has at least one row of positioning holes, and the spacing between the positioning holes is the same as the spacing between the needle holes; each pressure foot module has at least one positioning pin on its rigid pressure foot plate, and each positioning pin is inserted into one of the positioning holes.

[0010] For example, two rows of positioning holes are provided on the substrate at intervals, and the center line connecting the corresponding positioning holes is located between adjacent needle holes.

[0011] In conjunction with the first aspect, in one possible implementation, two rows of threaded holes are provided on the substrate at intervals, and fasteners are provided at both ends of each pressure foot module, with each fastener corresponding to one of the threaded holes.

[0012] In some embodiments, the presser foot module is provided with a connection hole suitable for fasteners to be inserted, and the lower end of the connection hole is chamfered to form a space suitable for the insertion of the operating end of the fastener.

[0013] For example, the presser foot module has a double-hole module and a triple-hole module; wherein, the double-hole module has two needle holes spaced apart centrally in its width direction, and the width of the double-hole module is twice the distribution spacing of the needle holes; the triple-hole module has three needle holes spaced apart centrally in its width direction, and the width of the triple-hole module is three times the distribution spacing of the needle holes.

[0014] The advantages of the modular combination presser foot provided by this utility model are as follows: Compared with the prior art, the modular combination presser foot of this utility model has a base plate connected to the presser foot connecting rod of a multi-needle sewing machine via a connecting seat fixed to its upper surface. The base plate is equipped with needle holes corresponding to the number of needles and needle pitch of the multi-needle sewing machine. Based on this, several detachable presser foot modules are installed on the lower surface of the base plate, and each presser foot module has a needle-receiving hole aligned with the needle hole, avoiding movement interference between the presser foot module and the needle. This is suitable for various garment processing techniques. Specifically, when the multi-needle sewing machine needs to perform routine pleating, gathering, and elastic gathering sewing operations, only the individual presser feet need to be... The modules are installed sequentially on the lower surface of the base plate to form an integral presser foot surface, thus achieving the same fabric pressing effect as a traditional multi-needle machine presser foot. When the multi-needle machine needs to perform slick sewing, simply remove the presser foot module corresponding to the position of the multi-needle machine's guide tube. This will create a slick limiting groove on the integral presser foot surface. The slick limiting groove can be used to limit the slick, which not only prevents the slick from slipping and misaligning during sewing, thus affecting the stitch accuracy and preventing changes in slick width, thereby improving the slick sewing quality, but also reduces the difficulty of slick sewing operations by using the constraint effect of the slick limiting groove, thereby improving the slick sewing efficiency.

[0015] In addition, each presser foot module can be replaced individually after wear, which reduces the maintenance cost of multi-needle machines compared to the traditional method of replacing the entire presser foot after wear. When sewing crawlers, the width of the crawler limiting groove can be adjusted by removing the number of presser foot modules, thereby meeting the sewing needs of crawlers of different widths. Furthermore, for sewing multiple crawlers, the corresponding presser foot modules can be removed according to the spacing of the crawlers, thereby forming multiple crawler limiting grooves corresponding to the sewing positions of each crawler, enabling the sewing of multiple crawlers at one time and improving production efficiency.

[0016] Secondly, this utility model embodiment also provides a multi-needle machine, including the above-mentioned modular combination presser foot.

[0017] The beneficial effects of the multi-needle sewing machine provided by this utility model are as follows: Compared with the prior art, the multi-needle sewing machine of this utility model adopts the above-mentioned modular combination presser foot, which has the same fabric pressing effect as the traditional multi-needle sewing machine presser foot, thereby meeting the needs of conventional sewing processes such as pleating, gathering, and elastic gathering; after removing the presser foot module corresponding to the position of the guide tube of the multi-needle sewing machine, a crawler strip limiting groove can be formed on the surface of the overall presser foot. This crawler strip limiting groove can be used to limit the crawler strip, which can not only prevent the crawler strip from slipping and misaligning during the sewing process, thus affecting the stitch accuracy and preventing changes in the width of the crawler strip, thereby improving the crawler strip sewing quality, but also reduce the difficulty of crawler strip sewing operations by using the constraint effect of the crawler strip limiting groove, thereby improving the crawler strip sewing efficiency. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of the modular combination presser foot provided in the embodiment of this utility model. Figure 1 ; Figure 2 A three-dimensional structural diagram of the modular combination presser foot provided in the embodiment of this utility model. Figure 2 ; Figure 3 A three-dimensional structural diagram of the modular combination presser foot provided in this embodiment of the utility model, showing the removal of one of the presser foot modules to obtain the climbing bar limiting groove; Figure 4 A side view of the modular combination presser foot provided in an embodiment of this utility model; Figure 5 This is a three-dimensional structural diagram of the substrate (excluding the connector) used in the embodiment of this utility model; Figure 6 This is a cross-sectional view of the presser foot module used in an embodiment of the present invention. Figure 7 for Figure 6 A magnified schematic diagram of the local structure at point A; Figure 8This is a three-dimensional structural diagram of the dual-hole module used in the embodiment of this utility model; Figure 9 This is a three-dimensional structural diagram of the three-hole module used in the embodiment of this utility model; Figure 10 This is a schematic diagram of the connection structure between the pressure foot module and the substrate in another embodiment of the present invention; Figures 11 to 14 These are schematic diagrams showing the different widths and positions of the climbing bar limiting grooves formed by the modular combination presser feet provided by this utility model.

[0019] In the diagram: 10, base plate; 11, connector; 12, pin hole; 13, positioning hole; 14, threaded hole; 20, pressure foot module; 201, pin hole; 202, climbing bar limiting groove; 203, positioning pin; 204, connecting hole; 21, flexible connector; 22, rigid pressure foot plate; 221, connecting rib; 222, through hole; 23, fastener; 30, double-hole module; 40, triple-hole module. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] It should be noted that when an element is referred to as being "set on" or "connected to" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0022] Please refer to the following: Figures 1 to 14The modular combination presser foot provided by this utility model will now be described. The modular combination presser foot includes a base plate 10 and a plurality of presser foot modules 20; a connecting seat 11 is fixedly provided on the upper surface of the base plate 10, and a plurality of needle holes 12 are provided on the base plate 10 at intervals, each needle hole 12 corresponding to a needle of a multi-needle machine; each presser foot module 20 is detachably connected to the lower surface of the base plate 10, and each presser foot module 20 is provided with at least two needle-removing holes 201 at intervals, each needle-removing hole 201 being vertically aligned with one of the needle holes 12; wherein, each presser foot module 20 has a first combination state in which they are sequentially adjacent to form an integral presser foot surface, and also has a second combination state in which at least one presser foot module 20 is removed in the first combination state to form a grooved presser foot surface, and the grooved presser foot surface forms a climbing strip limiting groove 202 based on the removed presser foot module 20.

[0023] It should be noted that ribbing, often used as decorative strips or abrasion-resistant supplements in clothing, is frequently designed into workwear or school uniforms. The width, number, and spacing of ribbing vary depending on the garment. During sewing, at least one seam line must be formed along both edges of the ribbing, with the distance between the two seams typically equal to the distance between two or more adjacent needle holes. Furthermore, when sewing ribbing, a fabric guide tube is needed to create an inward fold along both edges to ensure the neatness of the ribbing edges after sewing. Because the presser foot of traditional multi-needle sewing machines has a flat lower surface, the lack of width constraint during sewing makes it easy for the inward fold to become misaligned, leading to variations in ribbing width. Moreover, it's difficult to ensure the ribbing moves in a straight line, resulting in crooked stitches. This causes the distance between the stitch and the ribbing edge to vary, ultimately affecting the finish and durability of the sewn ribbing.

[0024] It should be explained that, in this embodiment, the connecting seat 11 on the substrate 10 can be directly welded to the substrate 10, or it can be connected to the substrate 10 by fastening connectors such as screws; this is not limited here. The function of the connecting seat 11 is to fix it to the presser foot connecting rod of the multi-needle machine. Specifically, the presser foot connecting rod is inserted into the slotted hole on the connecting seat 11, and then a clamping force is applied to the slotted hole by fastening connectors such as bolts. This connection method is the same as the connection method of the presser foot in the prior art of multi-needle machines, and is not considered an innovation of this application, nor will it be described in detail.

[0025] Compared with the prior art, the modular presser foot provided in this embodiment has a base plate 10 connected to the presser foot connecting rod of a multi-needle sewing machine via a connecting seat 11 fixed to its upper surface. The base plate 10 is equipped with needle holes 12 corresponding to the number of needles and needle pitch of the multi-needle sewing machine. Based on this, several detachable presser foot modules 20 are installed on the lower surface of the base plate 10, and each presser foot module 20 is provided with a needle-receiving hole 201 aligned with the needle hole 12, preventing movement interference between the presser foot module 20 and the needle. This is suitable for various garment processing techniques. When the multi-needle sewing machine needs to perform conventional pleating, gathering, and elastic band gathering sewing operations, simply connect each presser foot module 20 sequentially. When mounted adjacent to the lower surface of the substrate 10, an integral presser foot surface is formed, thus achieving the same fabric pressing effect as a traditional multi-needle machine presser foot. When the multi-needle machine needs to perform slick sewing, simply remove the presser foot module 20 corresponding to the position of the multi-needle machine's guide tube. This will create a slick limiting groove 202 on the integral presser foot surface. The slick limiting groove 202 can be used to limit the slick, which not only prevents the slick from slipping and misaligning during sewing, thus affecting the stitch accuracy and preventing changes in slick width, thereby improving the slick sewing quality, but also reduces the difficulty of slick sewing operations by using the constraint effect of the slick limiting groove 202, thereby improving the slick sewing efficiency.

[0026] In addition, each presser foot module 20 can be replaced individually after wear, which is beneficial to reducing the maintenance cost of multi-needle machines compared to the traditional method of replacing the entire presser foot after wear. When sewing crawlers, the width of the crawler limiting groove 202 can be adjusted by removing the number of presser foot modules 20, thereby meeting the sewing needs of crawlers of different widths. Furthermore, for sewing multiple crawlers, the corresponding presser foot modules 20 can be removed according to the spacing of the crawlers, thereby forming multiple crawler limiting grooves 202 corresponding to the sewing positions of each crawler, realizing the sewing of multiple crawlers at one time and improving production efficiency.

[0027] In some embodiments, combined with Figure 4 and Figure 6 It is understood that the front and rear ends of the presser foot module 20 are provided with upwardly curved flexible connectors 21, and the two flexible connectors 21 are respectively engaged with the front and rear edges of the substrate 10.

[0028] The presser foot module 20 can be integrally molded from plastic material using a two-color injection molding process. Its main body, namely the area between the two flexible connectors 21, has high hardness, which ensures that its bottom surface has high smoothness and low coefficient of friction, thereby improving the smoothness of the fabric sliding over the lower surface of the presser foot module 20 during sewing operations. The flexible connectors 21 at both ends of the presser foot module 20 have a certain degree of flexibility, so that when the presser foot module 20 is fastened to the base plate 10, the flexible deformation of the flexible connectors 21 can be used to achieve snap-fit ​​with the edge of the base plate 10, improving the ease of assembly and disassembly of the presser foot module 20.

[0029] The presser foot module 20 can also be made of metal, and the flexible connectors 21 are fixed to both ends of the presser foot module 20 by adhesive bonding. It should be noted that, regardless of whether the above-mentioned two-color injection molding or adhesive fixing method is used, it should be ensured that there is no surface difference between the lower surfaces of the main body of the presser foot module 20 and the flexible connectors 21 at both ends, so as to avoid the phenomenon of jamming and wrinkling when the fabric enters under the presser foot module 20.

[0030] As one specific embodiment of the presser foot module 20 described above, please refer to Figure 6 and Figure 7 The presser foot module 20 includes a rigid presser foot plate 22 and two flexible connectors 21 respectively vulcanized at both ends of the rigid presser foot plate 22; the rigid presser foot plate 22 conforms to the lower surface of the substrate 10 and is provided with pinholes 201.

[0031] Here, the flexible connector 21 can be made of plastic material and the rigid presser foot 22 is made of metal plate. The flexible connector 21 is integrally formed with the rigid presser foot 22 through a vulcanization process, thereby improving the connection strength of the flexible connector 21 on the rigid presser foot 22. At the same time, it can also make the bottom surface of the rigid presser foot 22 and the bottom surface of the flexible connector 21 seamlessly and smoothly connected, thereby ensuring the smooth passage of the fabric under the presser foot module 20.

[0032] It should be explained that the rigid presser foot 22 is required to conform to the lower surface of the substrate 10 because although the substrate 10 is generally planar, it has an upward-curving part at one end for easy fabric feeding (similar to the upward-curving structure of the presser foot at the front end of the multi-needle machine in the prior art). Therefore, the front end of the rigid presser foot 22 also needs to be bent upward with the curvature of the substrate 10 to ensure that the rigid presser foot 22 is completely conformed to the lower surface of the substrate 10, thereby improving the connection stability of the presser foot module 20 on the substrate 10.

[0033] To further improve the connection reliability between the flexible connector 21 and the rigid pressure foot plate 22, such as Figure 7As shown, both ends of the rigid pressure foot plate 22 are provided with connecting ribs 221 extending into the corresponding flexible connector 21, and the connecting ribs 221 are provided with through holes 222. By providing connecting ribs 221 with through holes 222, on the one hand, plastic material can flow into the through holes 222 during the vulcanization molding of the flexible connector 21, thereby forming a structure through the connecting ribs 221 after the plastic material is cured, which can greatly improve the connection reliability between the flexible connector 21 and the rigid pressure foot plate 22. On the other hand, the connecting ribs 221 can extend into the flexible connector 21 for vulcanization fixation, ensuring that the bottom surface of the flexible connector 21 and the bottom surface of the rigid pressure foot plate 22 can be connected without surface difference, thereby ensuring the smooth passage of the fabric under the pressure foot module 20.

[0034] It should be noted that you should refer to [link / reference]. Figure 5 , Figure 8 and Figure 9 In this embodiment, the substrate 10 is provided with at least one row of positioning holes 13, and the spacing between the positioning holes 13 is the same as the spacing between the needle holes 12; each rigid pressure foot plate 22 of each pressure foot module 20 is provided with at least one positioning pin 203, and each positioning pin 203 is respectively inserted into one of the positioning holes 13.

[0035] Considering that the edge engagement between the flexible connector 21 and the substrate 10 cannot be limited in the width direction, there is a risk of lateral slippage and misalignment of the presser foot module 20 during the sewing process. Therefore, in this embodiment, the presser foot module 20 is locked in the width direction relative to the substrate 10 by setting the positioning pin 203 and the positioning hole 13 for insertion and engagement, thereby improving the connection stability between the presser foot module 20 and the substrate 10.

[0036] Furthermore, considering the adaptability to sewing for different widths of climbing strips, the arrangement spacing of the same row of positioning holes 13 on this substrate 10 corresponds to the arrangement spacing of the needle holes 12. This ensures that the mounting position of the presser foot module 20 on the substrate 10 can be adjusted in units of a single spacing of the needle holes 12, thereby improving the adaptability to sewing operations for different widths of climbing strips.

[0037] Specifically, such as Figure 5As shown, two rows of positioning holes 13 are spaced apart on the substrate 10, with the center line connecting the corresponding positioning holes 13 located between adjacent needle holes 12. The two rows of positioning holes 13 ensure that both ends of each presser foot module 20 can be inserted into the corresponding positioning hole 13 via positioning pins 203, thereby improving the connection stability of the presser foot module 20. Furthermore, the positioning holes 13 are positioned in the area between adjacent needle holes 12, meaning the positioning holes 13 and needle holes 12 are staggered in the width direction of the substrate 10. This not only avoids interference between the needle holes 12 and the positioning holes 13, but more importantly, it ensures that the mounting position of the presser foot module 20 on the substrate 10 can be adjusted in units of a single interval between the needle holes 12 (the center distance between two adjacent needle holes 12). This facilitates obtaining a crawler strip limiting groove 202 that matches the width of the crawler strip, improving adaptability for sewing operations with crawler strips of different widths.

[0038] As an optional connection method between the aforementioned pressure foot module 20 and the substrate 10, please refer to [link / reference]. Figure 10 The substrate 10 has two rows of threaded holes 14 spaced apart. Each pressure foot module 20 has fasteners 23 passing through its front and rear ends, and each fastener 23 is connected to one of the threaded holes 14. Each pressure foot module 20 is fixed to the substrate 10 by directly connecting the two fasteners 23 to the threaded holes 14. The structure is simple and the connection is stable and reliable.

[0039] It should be noted that, in order to prevent the fastener 23 from protruding from the lower surface of the pressure foot module 20 and snagging the fabric, such as Figure 9 As shown, in this embodiment, the presser foot module 20 is provided with a connecting hole 204 suitable for fastener 23 to pass through. The lower end of the connecting hole 204 is chamfered to form a space suitable for the operating end of the fastener 23 to be embedded. Here, the fastener 23 can be a tapered screw. The tapered end of the tapered screw is embedded in the connecting hole 204 by chamfering, thereby avoiding the fastener 23 from affecting the flatness of the lower surface of the presser foot module 20 and ensuring that the fabric can pass smoothly under the presser foot module 20.

[0040] For some possible implementations, please refer to [link / reference]. Figure 3 , Figures 11 to 14 The presser foot module 20 has a double-hole module 30 and a triple-hole module 40; wherein, the double-hole module 30 has two needle holes 201 spaced apart in the center of its width direction, and the width of the double-hole module 30 is twice the distribution spacing of the needle holes 12; the triple-hole module 40 has three needle holes 201 spaced apart in the center of its width direction, and the width of the triple-hole module 40 is three times the distribution spacing of the needle holes 12.

[0041] Specifically, regarding the single-strip sewing process, Figure 3The structure of obtaining the climbing bar limiting groove 202 by removing one of the double-hole modules 30 when the width of the climbing bar is twice the spacing of the needle hole 12 is shown. Figure 11 The structure of obtaining the climbing bar limiting groove 202 by removing one of the three-hole modules 40 when the width of the climbing bar is three times the spacing of the needle hole 12 is shown. Figure 12 The diagram shows the structure of obtaining the crawler limiting groove 202 by removing two adjacent double-hole modules 30 when the crawler width is four times the spacing of the needle hole 12. Similarly, when the crawler width is five times the spacing of the needle hole 12, only the adjacent double-hole modules 30 and triple-hole modules 40 need to be removed to obtain the crawler limiting groove 202 of the corresponding width. This process is repeated for each crawler width. Of course, the position of the crawler limiting groove 202 should be aligned with the guide tube of the crawler. This position can be adjusted by adjusting the mounting position of the unremoved pressure foot module 20 on the substrate 10.

[0042] For the double-strip sewing process, Figure 13 The structure of the climbing bar limiting groove 202 is shown, where the width of the two climbing bars is twice the spacing of the needle hole 12 and the spacing of the climbing bars is three times the spacing of the needle hole 12. Figure 14 The structure of two climbing strip limiting grooves 202 with a width of twice the spacing of the needle hole 12 and a climbing strip spacing of five times the spacing of the needle hole 12 is shown. Similarly, the corresponding climbing strip limiting grooves 202 can be obtained by removing and adjusting the presser foot module 20 according to the number, width and spacing of the climbing strips, which can basically meet the needs of all common climbing strip sewing processes.

[0043] Based on the above, since the width and spacing of the seams on different garments vary according to their own design requirements, the minimum width of the seam is twice the spacing of the needle hole 12, thus ensuring that stitches can be obtained on both sides of its edges. The combination of the double-hole module 30 and the triple-hole module 40 allows the grooved presser foot surface to have a seam limiting groove 202 with a spacing of twice or more than the needle hole 12, thereby improving adaptability to different seam sewing processes.

[0044] Based on the same inventive concept, combined with Figures 1 to 14 It is understood that this application embodiment also provides a multi-needle machine, including the above-described modular presser foot.

[0045] Compared with the prior art, the multi-needle machine provided in this embodiment adopts the above-mentioned modular combination presser foot, which is suitable for various garment processing processes. When the multi-needle machine needs to perform conventional sewing operations such as pleating, gathering, and elastic gathering, it is only necessary to install each presser foot module 20 adjacently on the lower surface of the base plate 10 to form an integral presser foot surface, thereby achieving the same fabric pressing effect as the presser foot of a traditional multi-needle machine. When the multi-needle machine needs to perform slick sewing, it is only necessary to remove the presser foot module 20 corresponding to the position of the guide tube of the multi-needle machine, so that a slick limiting groove 202 is formed on the integral presser foot surface. This allows the slick to be limited by the slick limiting groove 202, which not only prevents the slick from slipping and misaligning during sewing, thus affecting the stitch accuracy and preventing changes in the width of the slick, thereby improving the quality of slick sewing, but also reduces the difficulty of slick sewing operations by using the constraint effect of the slick limiting groove 202, thereby improving the efficiency of slick sewing.

[0046] In addition, each presser foot module 20 can be replaced individually after wear, which is beneficial to reducing the maintenance cost of multi-needle machines compared to the traditional method of replacing the entire presser foot after wear. When sewing crawlers, the width of the crawler limiting groove 202 can be adjusted by removing the number of presser foot modules 20, thereby meeting the sewing needs of crawlers of different widths. Furthermore, for sewing multiple crawlers, the corresponding presser foot modules 20 can be removed according to the spacing of the crawlers, thereby forming multiple crawler limiting grooves 202 corresponding to the sewing positions of each crawler, realizing the sewing of multiple crawlers at one time and improving production efficiency.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular combination presser foot, characterized in that, Includes a substrate and several pressure foot modules; A connecting seat is fixedly provided on the upper surface of the substrate, and a plurality of needle holes are provided on the substrate at intervals, each of the needle holes corresponding to each needle of the multi-needle machine. Each of the presser foot modules is detachably connected to the lower surface of the substrate. Each presser foot module is provided with at least two needle holes at intervals, and each needle hole is vertically aligned with one of the needle holes. Each of the presser foot modules has a first combined state in which they are sequentially adjacent to form an integral presser foot surface, and a second combined state in which at least one of the presser foot modules is removed in the first combined state to form a grooved presser foot surface, wherein the grooved presser foot surface forms a climbing bar limiting groove based on the removed presser foot module.

2. The modular combination presser foot as described in claim 1, characterized in that, The presser foot module has upwardly curved flexible connectors at both ends, and the two flexible connectors are respectively engaged with the front and rear edges of the substrate.

3. The modular combination presser foot as described in claim 2, characterized in that, The presser foot module includes a rigid presser foot plate and two flexible connectors respectively vulcanized at both ends of the rigid presser foot plate; the rigid presser foot plate conforms to the lower surface of the substrate and is provided with the pin holes.

4. The modular combination presser foot as described in claim 3, characterized in that, Both ends of the rigid pressure foot plate are provided with connecting ribs that extend into the corresponding flexible connector, and the connecting ribs are provided with through holes.

5. The modular combination presser foot as described in claim 3, characterized in that, The substrate is provided with at least one row of positioning holes, and the spacing between the positioning holes is the same as the spacing between the needle holes; each of the pressure foot modules has at least one positioning pin on its rigid pressure foot plate, and each positioning pin is respectively inserted into one of the positioning holes.

6. The modular combination presser foot as described in claim 5, characterized in that, The substrate has two rows of positioning holes spaced apart from each other, and the center line connecting the corresponding positioning holes is located between adjacent needle holes.

7. The modular combination presser foot as described in claim 1, characterized in that, The substrate has two rows of threaded holes spaced apart front and back. Fasteners are inserted at both ends of each of the presser foot modules, and each fastener is connected to one of the threaded holes.

8. The modular combination presser foot as described in claim 7, characterized in that, The presser foot module is provided with a connection hole suitable for inserting the fastener, and the lower end of the connection hole is chamfered to form a space suitable for embedding the operating end of the fastener.

9. The modular combination presser foot as described in any one of claims 1-8, characterized in that, The presser foot module has a double-hole module and a triple-hole module; wherein, the double-hole module has two needle-feeding holes spaced apart centrally in its width direction, and the width of the double-hole module is twice the distribution spacing of the needle-feeding holes; the triple-hole module has three needle-feeding holes spaced apart centrally in its width direction, and the width of the triple-hole module is three times the distribution spacing of the needle-feeding holes.

10. A multi-needle machine, characterized in that, Includes the modular combination presser foot as described in any one of claims 1-9.

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