Flexible conduction presser foot and sewing machine

Abstract

The utility model belongs to the technical field of sewing machines, and particularly relates to a flexible conduction presser foot and a sewing machine. The flexible conduction presser foot comprises a shell, the shell is slidably connected with a pressing rod, the lower end of the pressing rod is connected with a presser foot, the shell is provided with a driving structure, the driving structure comprises a driving part and a transmission assembly arranged on the driving part, and the transmission assembly is connected between the driving part and the pressing rod; the driving part is used for controlling the transmission assembly to drive the pressing rod to slide up and down, the elastic part is arranged between the pressing rod and the transmission assembly, when the pressing foot descends, the pressing foot abuts against sewing materials, elasticity of the elastic part is used for pushing the pressing foot to be matched with the sewing materials, the elastic part provides self-adaptive adjusting capacity for the pressing foot, frequent replacement or adjustment of the pressing foot is not needed, and working efficiency is improved. And the sewing operation stability and the sewing effect are more uniform.

Description

Technical Field

[0001] The present invention relates to the technical field of sewing machines, and in particular to a flexible conductive presser foot and a sewing machine. Background Art

[0002] A sewing machine is a machine that uses sewing thread to form one or more stitches on the sewing material, so that one or more layers of sewing material are interwoven or sewn together.

[0003] For example, a Chinese sewing machine presser foot device with patent announcement number CN202227085U includes a presser foot and a presser foot lifting mechanism. The sewing machine main shaft drives a presser foot assembly to move up and down through a connecting rod mechanism. The presser foot assembly includes the presser foot. The presser foot lifting mechanism includes a stepping motor and a stepping motor driving shaft connected to the stepping motor. The output end of the stepping motor driving shaft extends out of a driving shaft sleeve and is fixedly connected to a swing arm. An arc groove is provided at the lower part of the swing arm. A rolling bearing is fixed at the end of a first axial screw after being connected to the connecting rod mechanism. The rolling bearing slides in the arc groove. The other end of the first axial screw is fixed on the presser foot assembly. Driven by the sewing machine main shaft, the presser foot moves synchronously with the up and down movement of the needle bar in the up and down direction, descends to a position pressing the sewing material before the sewing needle is inserted into the sewing material, and leaves the sewing material and rises after the sewing needle is pulled out of the sewing material.

[0004] The above-mentioned presser foot device of the sewing machine has different thicknesses of different sewing materials and the thickness of the sewing materials varies at different positions. When the fabric is moved, the presser foot will generate a lateral force on the sewing material, causing collision deformation or excessive resistance to the fabric, affecting the sewing effect. The lifting stroke of the presser foot needs to be repeatedly adjusted, which is inconvenient to use and needs to be improved. Summary of the Invention

[0005] In order to improve the problem of inconvenience caused by repeatedly adjusting the presser foot when the thickness of the sewing material is different, the present technical solution provides a flexible conductive presser foot and a sewing machine.

[0006] The purpose of this technical solution is achieved in this way:

[0007] A flexible conductive presser foot comprises a shell, the shell is slidably connected to a pressure rod, the pressure rod comprises a rod body and a connecting portion, the lower end of the rod body is connected to the presser foot, the shell is provided with a driving structure, the driving structure comprises a driving member and a transmission assembly arranged on the driving member, the transmission assembly is connected between the driving member and the pressure rod, the driving member controls the transmission assembly to drive the pressure rod to slide up and down, the connecting portion is provided with an elastic member, when the presser foot descends and approaches the sewing material, the elastic force of the elastic member is used to push the presser foot to cooperate with the sewing material.

[0008] When the presser foot is moved downwards, the sewing material is moved upwards or downwards, and the elastic force of the elastic member causes the presser foot to have a tendency to press the sewing material, so that the presser foot can adjust the elasticity of the sewing material, thereby making the sewing effect more uniform. The presser foot can stably and accurately guide the needle to pass through the sewing material. When the presser foot rises, the sewing material is released to adjust the position of the stitching line. The elastic member provides the presser foot with adaptive adjustment capability, and there is no need to frequently limit the movement range of the presser foot, thereby improving work efficiency and thus improving the stability and convenience of operation.

[0009] Preferably, the transmission assembly includes a transmission block, a connecting rod and a connecting block arranged on the connecting rod, the transmission block is arranged on the output shaft of the driving member, the connecting rod is hinged to the transmission block, the connecting block is located on the side of the connecting rod away from the transmission block, the connecting block is hinged to the connecting rod, the driving member drives the transmission block to reciprocate to drive the connecting rod to move, and the connecting rod is used to drive the connecting block to move so that the rod body slides up and down.

[0010] Through the above technical solution, the transmission block is fixedly connected to the output shaft of the driving member, and the driving member drives the transmission block to start reciprocating motion along the axial centerline direction of the output shaft. The transmission block is hinged to the connecting rod, and the swing of the transmission block drives the connecting rod to move and swing synchronously. The connecting rod is hinged to the connecting block, and the connecting rod moves and pushes the connecting block to move up and down. The connecting block drives the connecting part to move up and down along the sliding direction. The transmission block, the connecting rod and the connecting block cooperate with each other to ensure the efficiency and accuracy of power transmission, thereby improving the overall stability and reliability of adjustment.

[0011] Preferably, the connecting portion is provided with a fixing hole, the upper end of the rod body passes through the fixing hole, and the connecting portion is further provided with an expansion joint, the expansion joint passes through the connecting portion and extends to the fixing hole, and the expansion joint is used to adjust the gap width so that the connecting portion holds the rod body tightly to limit rotation.

[0012] Through the above technical solution, the rod body is a round rod, which is easy to rotate during operation. The connecting part is sleeved on the upper end of the pressure rod, and the width of the expansion joint gap of the connecting part is reduced, so that the connecting part is tightly clamped on the pressure rod. It is suitable for rod bodies with different round rod diameters, which improves applicability. The position of the rod body relative to the connecting part is fixed, which limits the loosening or rotation of the round rod during operation and avoids affecting normal operation.

[0013] Preferably, a sliding groove is provided on one side of the shell close to the connecting portion, and a slider for embedding in the sliding groove to achieve sliding guidance is fixed to the connecting portion, and the slider is embedded in the sliding groove to limit the circumferential rotation of the connecting portion.

[0014] Through the above technical solution, the slide groove passes through one side of the shell and contacts the slider. The shape and size of the slide groove are adapted to the slider. The slider can be embedded in the slide groove to cooperate with the guided sliding. The connecting part guides the sliding along the length direction of the guide groove to achieve precise control. The slider corresponds to the groove side walls on both sides of the slide groove, so that the connecting part limits circumferential rotation and improves stability.

[0015] Preferably, the connecting portion is provided with a mounting hole, the elastic member is embedded in the mounting hole, the connecting portion is provided with a sliding rod, the sliding rod is slidably connected relative to the connecting portion and is threadedly connected to the connecting block, the elastic member is connected to the sliding rod, and when the connecting block drives the sliding rod to move downward, the sliding rod overcomes the elastic force of the elastic member and slides to move the connecting portion.

[0016] Through the above technical solution, the elastic part is installed in the mounting hole, the connecting block is threadedly connected to the sliding rod so that the movement of the connecting block is directly transmitted to the sliding rod, one end of the elastic part is sleeved on the sliding rod, and the elastic part is guided along the length direction of the positioning hole for compression or reset to improve stability. When the connecting block drives the sliding rod to move downward, the sliding rod will overcome the elastic force of the elastic part and slide. At this time, the sliding rod compresses the elastic part downward and stores potential energy. When the sewing material moves, the presser foot compresses the elastic part upward according to the thickness of the sewing material for adjustment and adaptation.

[0017] Preferably, the connecting block is provided with a threaded hole, the sliding rod is threadedly connected to the threaded hole, the sliding rod is provided with a locking nut, and the locking nut is threadedly connected to the sliding rod. When the locking nut is tightened, the locking nut is pressed against the connecting block for positioning the sliding rod.

[0018] Through the above technical solution, the sliding rod and the connecting block are threadedly connected through threaded holes to adjust the fixed position, thereby reducing the shaking caused by external forces during operation. Different connection positions are changed to adjust the compression range of the elastic member, thereby improving the adjustment ability. After the locking nut is tightened along the thread direction, it is pressed against the corresponding end face of the connecting block, thereby improving the stability of the sliding rod connection and further improving the stability.

[0019] Preferably, a limiting ring 1 protrudes from one end of the sliding rod embedded in the mounting hole, and a limiting ring 2 protrudes from the position corresponding to the limiting ring 1 along the inner wall of the mounting hole. When the connecting block drives the sliding rod to move upward, the limiting ring 1 abuts against the lower end surface of the limiting ring 2 to lift the connecting part.

[0020] Through the above technical solution, the limit ring 2 is arranged on the side of the sliding rod that slides along the mounting hole and moves closer to the connecting block. As the sliding rod moves upward, the limit ring 1 will eventually abut against the lower end face of the limit ring 2. The limit ring 2 restricts the sliding rod from detaching from the upper end of the mounting hole. The limit ring 1 and the limit ring 2 cooperate to realize the lifting of the connecting part.

[0021] Preferably, the connection portion is further provided with a limiting bolt, the limiting bolt is located on a side of the elastic member away from the sliding rod, and the limiting bolt is threadedly connected to the mounting hole for the elastic member to abut against.

[0022] Through the above technical solution, the limiting bolt is threadedly connected to the through-opening at the lower end of the mounting hole, limiting the elastic part from protruding and detaching from the bottom of the mounting hole. The sliding rod cooperates with the limiting bolt so that the elastic part can be pressed against the limiting bolt to achieve compression, ensuring normal operation.

[0023] Preferably, the shell is provided with a guide hole, the guide hole is installed with a sliding rod sleeve, the sliding rod sleeve passes through the guide hole and is sleeved on the rod body to guide the sliding of the rod body, and the shell is provided with a limiting hole, the limiting hole is for the bolt to pass through to tighten the sliding rod sleeve to achieve positioning.

[0024] Through the above technical solution, the cross-sectional area of ​​the slide rod sleeve is consistent with the channel cross-sectional area of ​​the guide hole, the slide rod sleeve is embedded in the guide hole to a certain position, and the positioning is achieved by a bolt passing through the limiting hole of the shell and pressing against the slide rod sleeve. The rod body extends to the bottom of the shell through the slide rod sleeve. The slide rod sleeve can avoid direct contact between the rod body and the inner wall of the guide hole to reduce wear, thereby making the rod body slide up and down more smoothly and efficiently. The rod body is guided and slided along the length direction of the slide rod sleeve, thereby improving the accuracy of guiding the rod body and the sliding stability.

[0025] A sewing machine comprises a workbench and any one of the above-mentioned flexible conductive presser feet, wherein the shell is mounted on the workbench and the workbench is used for placing sewing materials.

[0026] Through the above technical solution, when the sewing machine is used normally, the sewing material is placed on the upper end surface of the workbench, the shell is installed above the workbench, and the position of the presser foot corresponds to the sewing material. The workbench and the presser foot are used together to sew the sewing material.

[0027] Compared with the existing technology, this technical solution has the following outstanding and beneficial technical effects:

[0028] 1. This technical solution provides an elastic member at the connection part. The driving member is used to control the transmission assembly to drive the presser rod to slide up and down. The rod body drives the presser foot to move closer to or away from the sewing material. The elastic member provides appropriate elastic force and adaptive adjustment capabilities. There is no need to frequently replace or adjust the presser foot, which improves work efficiency and makes sewing more stable and the sewing effect more uniform.

[0029] 2. This technical solution provides a sliding rod and a limiting bolt at the connecting part. The sliding rod is slidably connected relative to the connecting part and is threadedly connected to the connecting block. The sliding rod and the limiting bolt cooperate to control the elastic part so that the sliding of the connecting part drives the rod body to move synchronously to ensure normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0031] Figure 2 This is a partial explosion diagram of this embodiment;

[0032] Figure 3 It is a partial cross-sectional schematic diagram of this embodiment;

[0033] Figure 4 For this embodiment Figure 3 A partially enlarged schematic diagram.

[0034] 1. Housing; 2. Press rod; 21. Rod body; 22. Connecting part; 3. Presser foot; 5. Driving structure; 51. Driving member; 52. Transmission assembly; 521. Transmission block; 522. Connecting rod; 523. Connecting block; 6. Elastic member; 7. Limiting hole; 8. Fixing hole; 9. Expansion joint; 10. Mounting hole; 11. Sliding rod; 12. Threaded hole; 13. Locking nut; 14. Limiting ring 1; 15. Limiting ring 2; 16. Limiting bolt; 17. Slide groove; 18. Slider; 19. Guide hole; 20. Sliding rod sleeve. DETAILED DESCRIPTION

[0035] The specific implementation of the technical solution is further described in detail below with reference to the accompanying drawings.

[0036] Example:

[0037] See also Figure 1 A flexible conductive presser foot includes a shell 1, and an installation space for installation is opened on one side of the shell 1 along the depth direction. The shell 1 is connected to a pressure rod 2, which is slidably connected to the shell 1. The sliding direction of the pressure rod 2 is vertical relative to the shell 1. The pressure rod 2 includes a rod body 21 and a connecting part 22. The rod body of the rod body 21 is a round rod, and the rod body 21 passes through the lower end of the shell 1 and extends in a direction away from the shell 1. The rod body 21 is provided with a presser foot 3, which is located at one end of the rod body 21 away from the shell 1. The presser foot 3 is bolted to the rod body 21, and the rod body 21 drives the presser foot 3 to slide synchronously, and the presser foot 3 approaches or moves away from the sewing material. The presser foot 3 is used to guide the sewing needle to pass through the sewing material for sewing.

[0038] The shell 1 is provided with a guide hole 19, which passes through the lower end of the shell 1 in a vertical direction. A slide sleeve 20 is installed in the guide hole 19. The cross-sectional dimensions and size of the slide sleeve 20 are adapted to the channel cross-sectional dimensions of the guide hole 19. The slide sleeve 20 extends through the guide hole 19 in a direction away from the lower end face of the shell 1, and the slide sleeve 20 is sleeved on the rod body 21. The shell 1 also passes through a limiting hole 7, and the limiting hole 7 passes through the guide hole 19 at a position corresponding to the position of the guide hole 19. The penetration direction of the limiting hole 7 is perpendicular to the penetration direction of the guide hole 19. When the slide sleeve 20 passes through the guide hole 19 and is located at a certain position, the bolt passes through the limiting hole 7 and is pressed against the corresponding outer wall of the slide sleeve 20 to achieve positioning. The slide sleeve 20 is used to guide the sliding of the rod body 21.

[0039] See also Figure 2 and Figure 3 The connecting portion 22 is provided with a fixing hole 8, and the fixing hole 8 passes through the connecting portion 22 at the position corresponding to the rod body 21. The length direction of the fixing hole 8 is parallel to the sliding direction of the pressure rod 2. The upper end of the rod body 21 passes through the fixing hole 8, and the connecting portion 22 is provided with an expansion gap 9. The expansion gap 9 completely passes through the connecting portion 22 in the vertical direction and is opened from the side wall of the connecting portion 22 to the fixing hole 8. By adjusting the gap width of the expansion gap 9, the connecting portion 22 is tightly attached to the rod body 21 to limit rotation. The specific adjustment method can be to use a through hole through the side wall of the connecting portion 22 corresponding to the expansion gap 9, the bolt passes through the connecting portion 22 from the through hole and protrudes from the other side end face, and the gap width is controlled by adjusting the tightening degree of the nut and the bolt. Alternatively, the through holes at both ends of the through hole can be respectively hole one and hole two, and the inner circumferential wall of the through hole corresponding to the expansion gap 9 between hole one and the expansion gap 9 has a threaded section. The bolt passes through hole two and is threadedly connected by the threaded section, and the gap width is controlled by adjusting the tightening degree.

[0040] The connecting portion 22 is passed through by a mounting hole 10, and the penetration direction of the mounting hole 10 is parallel to the penetration direction of the fixing hole 8. The connecting portion 22 is provided with an elastic member 6, and the elastic member 6 adopts a reset spring. The elastic member 6 is embedded in the mounting hole 10. The connecting portion 22 is provided with a sliding rod 11, one end of the sliding rod 11 is embedded in the mounting hole 10 and the sliding rod 11 slides relative to the connecting portion 22, and the sliding rod 11 is provided with a locking nut 13, which is sleeved on the sliding rod 11. The locking nut 13 is located on the side of the connecting block 523 close to the connecting portion 22, and the locking nut 13 is threadedly connected to the sliding block. When the locking nut 13 is tightened along the thread direction, the locking nut 13 is pressed against the corresponding lower end surface of the connecting block 523.

[0041] The shell 1 is provided with a driving structure 5, which includes a driving member 51 and a transmission assembly 52. ​​In this example, the driving member 51 adopts a driving motor. The driving member 51 is installed on the side wall of the shell 1, and the output shaft of the driving member 51 extends into the shell 1 through the corresponding side wall. The driving member 51 is fixedly connected to the shell 1, and the transmission assembly 52 is connected between the driving member 51 and the pressure rod 2.

[0042] The transmission assembly 52 includes a transmission block 521, a connecting rod 522 and a connecting block 523. The transmission block 521 is arranged on the driving member 51. The transmission block 521 is clamped with the output shaft of the driving member 51 through bolts and nuts. The reciprocating motion of the output shaft of the driving member 51 drives the transmission block 521 to swing synchronously along the axis of the output shaft, and the rotation axis is set in the horizontal direction. The connecting rod 522 is located between the transmission block 521 and the connecting block 523, and the connecting rod 522 extends downward relative to the transmission block 521. One end of the connecting rod 522 is hinged to the transmission block 521, and the other end of the connecting rod 522 is hinged to the connecting block 523. The swing of the transmission block 521 drives the connecting rod 522 to move synchronously.

[0043] The connecting block 523 is located on the side of the connecting rod 522 away from the transmission block 521. The movement of the connecting rod 522 drives the connecting block 523 to move synchronously, so that the driving member 51 controls the transmission assembly 52 to transmit power to realize that the connecting part 22 drives the rod body 21 to slide up and down. The other end of the sliding rod 11 is fixedly connected to the connecting block 523. The sliding rod 11 and the connecting block 523 are fixedly connected in a specific way that the end face of the connecting block 523 facing the sliding rod 11 is penetrated by a threaded hole 12, and the sliding rod 11 is embedded in the threaded hole 12 and is threadedly connected to the threaded hole 12.

[0044] See also Figure 3 and Figure 4 The end of the sliding rod 11 away from the connecting block 523 is downwardly embedded in the mounting hole 10, and the sliding rod 11 is fixedly connected to the elastic member 6. The movement of the connecting block 523 drives the sliding rod 11 to move synchronously. The sliding rod 11 is slidably connected relative to the connecting portion 22 along the through-direction of the mounting hole 10. The sliding rod 11 is provided with a limiting ring 14. The limiting ring 14 is located at the end of the sliding rod 11 away from the connecting block 523. The limiting ring 14 protrudes from the corresponding outer peripheral wall of the sliding rod 11. The position of the mounting hole 10 corresponding to the limiting ring 14 protrudes along the inner peripheral wall of the limiting ring 2. When the sliding rod 11 slides upward, the upper end surface of the limiting ring 14 corresponds to the lower end surface of the limiting ring 2 15 and is used to drive the connecting portion 22 to lift.

[0045] The connecting portion 22 is also provided with a limiting bolt 16, which is located on the side of the elastic member 6 away from the sliding rod 11. The limiting bolt 16 is embedded in the through-hole at the lower end of the mounting hole 10, and the limiting bolt 16 is threadedly connected along the inner circumferential wall of the corresponding mounting hole 10 to achieve fixation. The elastic member 6 is arranged between the sliding rod 11 and the limiting bolt 16. When the sliding rod 11 slides downward, the elastic member 6 abuts against the corresponding end face of the limiting bolt 16. The sliding rod 11 overcomes the elastic force of the elastic member 6 and cooperates with the limiting bolt 16 to compress the elastic member 6, so that the presser foot 3 has a tendency to press the sewing material.

[0046] A slide groove 17 is provided on the end face of the shell 1 close to the connecting part 22. The penetration direction of the slide groove 17 is parallel to the sliding direction of the pressure rod 2. A slider 18 is provided on the side of the connecting part 22 close to the shell 1. The slider 18 is embedded in the slide groove 17. The two side walls of the slider 18 correspond one-to-one to the inner groove walls on both sides of the slide groove 17. The slider 18 cooperates with the slide groove 17 to limit the circumferential rotation of the connecting part 22.

[0047] The specific working process of this program is as follows:

[0048] The present technical solution is that a pressure rod 2 is slidably connected to the shell 1, and a driving structure 5 is also installed on the shell 1. The driving member 51 in the driving structure 5 drives the output shaft to rotate back and forth, and drives the sliding rod 11 to slide through the transmission component 52, so that the connecting part 22 drives the rod body 21 to lift or fall, thereby realizing the synchronous movement of the presser foot 3 toward or away from the sewing material. When the presser foot 3 descends with the rod body 21, the elastic member 6 provides appropriate elastic force for the presser foot 3. The elastic force of the elastic member 6 provides the presser foot 3 with a tendency to press against the sewing material, and the presser foot 3 can stably and accurately guide the sewing needle to pass through the sewing material. When the presser foot 3 rises with the rod body 21, the sewing material is released to readjust the position of the stitching line. The elastic member 6 provides the presser foot 3 with adaptive adjustment capability, and there is no need to frequently replace or adjust the presser foot 3, thereby improving work efficiency, improving the stability of the sewing operation and achieving better sewing effect.

[0049] This embodiment also discloses a sewing machine, including a workbench placed on a horizontal plane. The upper end surface of the workbench is used to place sewing materials. The shell 1 is located above the workbench and is fixedly connected to the workbench. The presser foot 3 is raised or lowered relative to the upper end surface of the workbench.

[0050] The specific working process of this program is as follows:

[0051] This technical solution ensures that the sewing material can be placed flatly by placing the sewing material on the upper end surface of the workbench, which is designed to be flat and stable. The rod body 21 of the shell 1 is located above the workbench, and the presser foot 3 is raised or lowered relative to the upper end surface of the workbench to ensure that the sewing material can remain stable during the sewing process, thereby improving stability.

[0052] The above shows and describes the basic principles and main features of the present technical solution and the advantages of the present technical solution. Those skilled in the art should understand that the present technical solution is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present technical solution. Various changes and improvements may be made to the present technical solution without departing from the spirit and scope of the present technical solution. Such changes and improvements fall within the scope of the present technical solution for which protection is sought. The scope of protection claimed by the present technical solution is defined by the appended claims and their equivalents.

Claims

1. A flexible conductive presser foot, comprising a housing (1), characterized in that: The housing (1) is slidably connected to a pressure rod (2), the pressure rod (2) comprising a rod body (21) and a connecting portion (22), the lower end of the rod body (21) being connected to a presser foot (3), the housing (1) being provided with a driving structure (5), the driving structure (5) comprising a driving member (51) and a transmission assembly (52) arranged on the driving member (51), the transmission assembly (52) being connected between the driving member (51) and the pressure rod (2), the driving member (51) controlling the transmission assembly (52) to drive the pressure rod (2) to slide up and down, the connecting portion (22) being provided with an elastic member (6), when the presser foot (3) descends and approaches the sewing material, the elastic force of the elastic member (6) is used to push the presser foot (3) to match the sewing material.

2. The flexible conductive presser foot according to claim 1, characterized in that: The transmission assembly (52) comprises a transmission block (521), a connecting rod (522) and a connecting block (523) arranged on the connecting rod (522); the transmission block (521) is arranged on the output shaft of the driving member (51); the connecting rod (522) is hinged to the transmission block (521); the connecting block (523) is located on a side of the connecting rod (522) away from the transmission block (521); the connecting block (523) is hinged to the connecting rod (522); the driving member (51) drives the transmission block (521) to reciprocate to drive the connecting rod (522) to move; the connecting rod (522) is used to drive the connecting block (523) to move so as to slide up and down on the rod body (21).

3. The flexible conductive presser foot according to claim 1, characterized in that: The connecting portion (22) is provided with a fixing hole (8), and the upper end of the rod body (21) passes through the fixing hole (8). The connecting portion (22) is also provided with an expansion joint (9), and the expansion joint (9) passes through the connecting portion (22) and extends to the fixing hole (8). The expansion joint (9) is used to adjust the gap width so that the connecting portion (22) hugs the rod body (21) to limit rotation.

4. The flexible conductive presser foot according to claim 3, characterized in that: A sliding groove (17) is provided on one side of the housing (1) close to the connecting portion (22); a sliding block (18) is fixed to the connecting portion (22) for being embedded in the sliding groove (17) to achieve sliding guidance; the sliding block (18) is embedded in the sliding groove (17) for limiting the circumferential rotation of the connecting portion (22).

5. The flexible conductive presser foot according to claim 2, characterized in that: The connecting portion (22) is provided with a mounting hole (10), the elastic member (6) is embedded in the mounting hole (10), the connecting portion (22) is provided with a sliding rod (11), the sliding rod (11) is slidably connected relative to the connecting portion (22) and is threadedly connected to the connecting block (523), the elastic member (6) is connected to the sliding rod (11), and when the connecting block (523) drives the sliding rod (11) to move downward, the sliding rod (11) overcomes the elastic force of the elastic member (6) and slides to move the connecting portion (22).

6. The flexible conductive presser foot according to claim 5, characterized in that: The connection block (523) is provided with a threaded hole (12), and the sliding rod (11) is threadedly connected to the threaded hole (12). The sliding rod (11) is provided with a locking nut (13), and the locking nut (13) is threadedly connected to the sliding rod (11). When the locking nut (13) is tightened, the locking nut (13) is pressed against the connection block (523) to position the sliding rod (11).

7. The flexible conductive presser foot according to claim 5, characterized in that: A limiting ring 1 (14) protrudes from one end of the sliding rod (11) embedded in the mounting hole (10), and a limiting ring 2 (15) protrudes from a position along the inner wall of the mounting hole (10) corresponding to the limiting ring 1 (14); when the connecting block (523) drives the sliding rod (11) to move upward, the limiting ring 1 (14) abuts against the lower end surface of the limiting ring 2 (15) to lift the connecting portion (22).

8. The flexible conductive presser foot according to claim 5, characterized in that: The connecting portion (22) is also provided with a limiting bolt (16), and the limiting bolt (16) is located on a side of the elastic member (6) away from the sliding rod (11), and the limiting bolt (16) is threadedly connected to the mounting hole (10) for the elastic member (6) to abut against.

9. The flexible conductive presser foot according to claim 1, characterized in that: The housing (1) is provided with a guide hole (19), and a slide rod sleeve (20) is installed in the guide hole (19). The slide rod sleeve (20) passes through the guide hole (19) and is sleeved on the rod body (21) to guide the rod body (21) to slide. The housing (1) is provided with a limiting hole (7), and the limiting hole (7) is used for a bolt to pass through and to press against the slide rod sleeve (20) to achieve positioning.

10. A sewing machine, comprising a workbench, characterized in that: It also comprises the flexible conductive presser foot as claimed in any one of claims 1 to 9, wherein the shell (1) is installed on a workbench, and the workbench is used for placing sewing materials.

Images