Presser foot and bar tacking machine

Abstract

The utility model discloses a presser foot and a bar tacking machine, the presser foot comprises two adjacent pressing parts which are symmetrically arranged left and right, each pressing part comprises an auxiliary plate, two presser foot sleeves, a driving part and a fixing part, and each auxiliary plate comprises a needle groove which extends along a first direction and penetrates through the auxiliary plate; each presser foot sleeve comprises a connecting body, a folded edge and a pressing body which are sequentially connected, the two connecting bodies are movably connected to the auxiliary plate, the two folded edges are oppositely arranged in the second direction, located in the needle groove and extend in the first direction, and a sewing area allowing a machine needle to penetrate in the first direction is formed between the two folded edges; the pressing body is located at the bottom of the auxiliary plate and used for pressing the fabric. The driving piece is used for driving the two connecting bodies to synchronously get away from and get close to each other in the second direction so as to adjust the distance between the two folded edges in the second direction; the fixing piece is used for fixing the connecting body adjusted by the driving piece to the auxiliary plate; through the arrangement, the size of the sewing area of the presser foot can be adjusted, so that the replacement frequency of the presser foot is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sewing equipment technology, and in particular to a presser foot and a button knotting machine. Background Technology

[0002] A bartacking machine, also known as a knotting machine or sealing machine, is a commonly used sewing equipment. It is usually used to reinforce stitches and is generally suitable for the production of clothing, knitwear, sweaters, suits, denim, etc. For a bartacking machine, the parts that have direct contact with the fabric are the needle and the presser foot. When sewing with a bartacking machine, with the movement of the needle and the pressing of the presser foot, the patterned stitches can be stably formed on the fabric.

[0003] Due to the diversity of patterns, there are also various types of presser feet. When the size of the pattern is larger or smaller than the sewing area inside the assembled presser foot, it is often necessary to replace it with a presser foot that matches the required pattern size so that the sewing area inside the presser foot can meet the sewing needs of the required pattern. The process of replacing the presser foot is quite complicated. For workers who are not professional maintenance personnel, replacing the presser foot takes a lot of time and seriously affects the production efficiency of the bartacking machine.

[0004] Therefore, how to achieve the same presser foot to meet the sewing requirements of multiple sizes and patterns, so as to reduce the frequency of presser foot replacement and improve production efficiency, is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a presser foot and a bartacking machine that can enable the same presser foot to meet the sewing requirements of various sizes and patterns, thereby reducing the frequency of presser foot replacement and improving production efficiency.

[0006] To achieve the above objectives, this utility model provides a presser foot, comprising two adjacent and symmetrically arranged pressing members, each of which includes:

[0007] An auxiliary plate includes a needle groove extending along a first direction and penetrating the auxiliary plate, the needle groove being located on one side of two opposing clamping members, the auxiliary plate being used to connect to a presser foot bar;

[0008] The two presser foot covers each include a connecting body, a folded edge, and a pressing body connected in sequence. The two connecting bodies are movably connected to the auxiliary plate. The two folded edges are arranged opposite each other in the second direction and located in the needle groove and extend along the first direction. A sewing area for the machine needle to pass through in the first direction is formed between the two folded edges. The pressing body is located at the bottom of the auxiliary plate. The presser foot rod can drive the auxiliary plate to move in the first direction so that the pressing body presses the fabric.

[0009] A driving element, connected to two connecting bodies, is used to drive the two connecting bodies to move away and closer synchronously in the second direction, so as to adjust the distance between the two folds in the second direction.

[0010] A fastener is used to fix the connector, after being adjusted by the drive component, to the auxiliary plate, with the first direction and the second direction being perpendicular to each other.

[0011] In one possible implementation, a long groove is provided on the opposite side of the two connecting bodies in the same clamping member, and the length direction of the long groove is parallel to the second direction.

[0012] The top of the auxiliary plate is provided with a protrusion extending in the second direction and adapted to the long groove. The driving member is used to drive the long groove to slide relative to the protrusion in the second direction, so that the two connecting bodies move away and closer in the second direction simultaneously.

[0013] In one possible implementation, the connector is further provided with a strip-shaped hole that extends through the connector along the first direction, and the length direction of the strip-shaped hole is parallel to the third direction, while the third direction is perpendicular to the first direction and the second direction.

[0014] The driving component includes a connector extending along a first direction and connected to an auxiliary plate, and an adjusting plate sleeved on the outer periphery of the connector and capable of rotating relative to the auxiliary plate about the axis of the connector. The adjusting plate is provided with a rod extending along the first direction into a corresponding slot. When the adjusting plate rotates, it can drive the rod to slide in the corresponding slot to adjust the distance between the slot and the axis of the connector in a second direction.

[0015] In one possible implementation, the two rods on the same adjustment plate are symmetrically arranged about the center of the connecting member axis.

[0016] In one possible implementation, one of the connecting bodies in the same clamping member is further provided with a first fixing hole, the length direction of the first fixing hole being parallel to the second direction;

[0017] The auxiliary plate is provided with a second fixing hole corresponding to the first fixing hole;

[0018] The fastener includes an end and a fixing rod. The fixing rod can pass through the first fixing hole in the first direction and then be screwed into and connected to the second fixing hole, so that the end presses against the end face of the first fixing hole facing the end, thereby restricting the movement of the connector in the second direction.

[0019] In one possible implementation, the auxiliary plate has a mounting hole with its axis extending along a first direction. The mounting hole is a stepped hole, which includes a first hole with a larger cross-sectional dimension perpendicular to the first direction and a second hole with a smaller cross-sectional dimension perpendicular to the first direction. The first hole is located on the side of the second hole away from the adjustment plate, and a shoulder is formed between the first hole and the second hole.

[0020] The connector includes an abutment and an extension rod connected to the abutment and extending in a first direction. The extension rod passes through a second hole and extends to the top of the auxiliary plate. An annular groove is provided on the extension rod above the auxiliary plate. A retaining spring is engaged in the annular groove. The retaining spring is used to prevent the adjusting plate located between the retaining spring and the auxiliary plate from disengaging from the extension rod. An elastic element is also provided between the adjusting plate and the auxiliary plate. The two ends of the elastic element in the first direction abut against the opposite sides of the adjusting plate and the auxiliary plate, so that the abutment abuts against the shoulder.

[0021] In one possible implementation, a presser foot bracket for connection with a clamping member is also included. The presser foot bracket includes a connecting plate that can fit against the upper surface of an auxiliary plate. The connecting plate has a first through hole and a second through hole extending along a first direction. The auxiliary plate also has a first threaded hole corresponding to the first through hole and a second threaded hole corresponding to the second through hole. One end of a first fastener passes through the first through hole and is screwed into the first threaded hole, and an elastic washer is provided between the other end of the first fastener and the connecting plate. One end of a second fastener passes through the second through hole and is screwed into the second threaded hole, and the other end of the second fastener abuts against the side of the connecting plate away from the auxiliary plate. The presser foot bracket also includes a fixing bracket connected to the connecting plate, and the fixing bracket is used to connect with the presser foot rod.

[0022] In one possible implementation, the clamping body is connected to the bottom of the folded edge, and both clamping bodies in the same clamping member are bent relative to the folded edge in opposite directions. The bending angle between the clamping body and the folded edge is greater than 90°, and the clamping body can deform and recover relative to the folded edge, so that the side of the clamping body away from the auxiliary plate abuts against and stretches the fabric.

[0023] In one possible implementation, the clamping body is specifically made of spring steel.

[0024] A knotting machine, comprising a presser foot as described above.

[0025] Compared to the aforementioned background technology, the presser foot provided by this utility model includes two adjacent and symmetrically arranged pressing members. Each pressing member includes an auxiliary plate, two presser foot sleeves, a driving member, and a fixing member. The auxiliary plate includes a needle groove extending along a first direction and penetrating the auxiliary plate. The needle groove is located on one side of the two pressing members facing each other. The auxiliary plate is used to connect with the presser foot rod. Each of the two presser foot sleeves includes a connecting body, a folded edge, and a pressing body connected in sequence. The two connecting bodies are movably connected to the auxiliary plate. The two folded edges are arranged opposite each other in a second direction and are located in the needle groove, extending along the first direction. A sewing area for the needle to pass through in the first direction is formed between the two folded edges. The pressing body is located at the bottom of the auxiliary plate. The presser foot rod can drive the auxiliary plate to move in the first direction, so that the pressing body presses the fabric. The driving member is connected to the two connecting bodies and is used to drive the two connecting bodies to move away and closer synchronously in the second direction to adjust the distance between the two folded edges in the second direction. The fixing member is used to fix the connecting body adjusted by the driving member to the auxiliary plate. The first direction and the second direction are perpendicular to each other.

[0026] Specifically, a sewing area is formed between two folded edges located within the needle groove and positioned opposite each other in the second direction, allowing the needle to pass through in the first direction. A drive unit drives the connecting body connected to the folded edges to move synchronously away and closer in the second direction, enabling the two folded edges of the same pressing element to move synchronously away and closer in the second direction. This changes the distance between the two folded edges in the second direction, allowing adjustment of the width of the sewing area in the second direction to accommodate different patterns and their varying width requirements. A fixing element secures the adjusted connecting body to an auxiliary plate, fixing its position. The presser foot lever moves the auxiliary plate in the first direction, causing the pressing body to press the fabric. The needle then passes through the fabric in the first direction to complete the sewing process for subsequent patterns. This allows a single presser foot to meet the sewing needs of various sizes and patterns, reducing the frequency of presser foot changes and improving production efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the presser foot provided in an embodiment of the present utility model;

[0029] Figure 2 A schematic diagram of the presser foot provided in an embodiment of this utility model from another perspective;

[0030] Figure 3 An exploded view of the presser foot provided in an embodiment of this utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the auxiliary plate provided in an embodiment of the present utility model;

[0032] Figure 5 This is a schematic diagram of the auxiliary plate provided in an embodiment of the present invention from another perspective;

[0033] Figure 6 This is a schematic diagram of the structure of a pressure foot sleeve with a first fixing hole provided in an embodiment of the present utility model;

[0034] Figure 7 for Figure 6 Top view;

[0035] Figure 8 for Figure 6 Side view;

[0036] Figure 9 A schematic diagram of the structure of a pressure foot sleeve without a first fixing hole provided in an embodiment of this utility model;

[0037] Figure 10 This is a schematic diagram of the structure of the adjustment plate provided in an embodiment of the present utility model.

[0038] in:

[0039] 100-Auxiliary plate, 110-Pin groove, 120-Protrusion strip, 130-Second fixing hole, 140-Mounting hole, 141-First hole, 142-Second hole, 150-First threaded hole, 160-Second threaded hole;

[0040] 200-Pressure foot sleeve, 210-Connector, 211-Long groove, 212-Strip hole, 213-First fixing hole, 220-Folded edge, 230-Clamping body;

[0041] 300-Driver component, 310-Connector component, 311-Abutment joint, 312-Extension rod, 313-Ring groove, 320-Adjusting plate, 321-Rod body, 330-Snap ring, 340-Elastic component;

[0042] 400 - Fixing component, 410 - End, 420 - Fixing rod;

[0043] 500-Pressure foot bracket, 510-Connecting plate, 511-First through hole, 512-Second through hole, 520-Fixing bracket;

[0044] 600 - First fastener, 610 - Elastic washer;

[0045] 700 - Second fastener. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] In the description of this utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model.

[0049] The purpose of this invention is to provide a presser foot and bartacking machine that can enable the same presser foot to meet the sewing requirements of various sizes and patterns, thereby reducing the frequency of presser foot replacement and improving production efficiency.

[0050] It should be noted that in this embodiment, the X direction in the attached drawings is defined as the first direction, the Y direction as the second direction, and the Z direction as the third direction. The first direction, the second direction, and the third direction are perpendicular to each other. In addition, for ease of understanding, the fabric and cloth will be collectively referred to as fabric in this embodiment.

[0051] Please see Figure 1 , Figure 2 and Figure 3 To achieve the above objectives, this utility model provides a presser foot, comprising two adjacent and symmetrically arranged pressing members. Each pressing member includes an auxiliary plate 100, two presser foot sleeves 200, a driving member 300, and a fixing member 400. The auxiliary plate 100 includes a needle groove 110 extending along a first direction and penetrating the auxiliary plate 100. The needle groove 110 is located on one side of the two pressing members facing each other. The two pressing members are adjacent or attached in a third direction, that is, the needle groove 110 is located on the side of the auxiliary plate 100 in a third direction. The needle grooves 110 of the two pressing members are connected so that the two needle grooves 110 together form the largest sewing area for the machine needle to pass through in the first direction. The auxiliary plate 100 is used to connect with the presser foot rod.

[0052] Both presser foot covers 200 include a connecting body 210, a folded edge 220, and a pressing body 230 connected in sequence. The two connecting bodies 210 are movably connected to the top of the auxiliary plate 100. The two folded edges 220 are arranged opposite each other in the second direction and are located in the needle groove 110 and extend along the first direction. A sewing area for the machine needle to pass through in the first direction is formed between the two folded edges 220. The pressing body 230 is located at the bottom of the auxiliary plate 100. The presser foot rod can drive the auxiliary plate 100 to move in the first direction, so that the pressing body 230 presses the fabric.

[0053] The driving member 300 is connected to the two connecting bodies 210. The driving member 300 is used to drive the two connecting bodies 210 to move away and closer synchronously in the second direction, so as to adjust the distance between the two folded edges 220 in the second direction. That is, the driving member 300 can drive the two connecting bodies 210 to move synchronously in opposite directions in the second direction, so as to increase the distance between the two folded edges 220 in the second direction. The driving member 300 can also drive the two connecting bodies 210 to move synchronously in opposite directions in the second direction, so as to decrease the distance between the two folded edges 220 in the second direction. The fixing member 400 is used to fix the connecting bodies 210 adjusted by the driving member 300 to the auxiliary plate 100, so as to prevent the connecting bodies 210 and the auxiliary plate 100 from moving or moving relative to each other during subsequent sewing.

[0054] It should be noted that the patterns have different lengths and widths. Patterns of different sizes can be understood as having different lengths or widths. The second direction mentioned above can be taken as the width direction of the pattern, and the third direction mentioned above can be taken as the length direction of the pattern, so as to facilitate the understanding of this solution. By adjusting the width of the sewing area in the second direction, the edge of the pattern can be placed against the edge of the sewing area during the sewing process. When the needle moves, the fabric on one side of the needle is pressed down, which can reduce the amount of fabric floating in the direction of needle movement and improve basic sewing efficiency.

[0055] A sewing area is formed between two folded edges 220 located within the needle groove 110 and arranged opposite each other in the second direction, for the needle to pass through in the first direction. The connecting body 210 connected to the folded edges 220 is driven by the drive member 300 to move away and closer in the second direction simultaneously. This allows the two folded edges 220 of the same pressing member to move away and closer in the second direction simultaneously, thereby changing the distance between the two folded edges 220 in the second direction and adjusting the width of the sewing area in the second direction to accommodate different requirements of the sewing area width in the second direction for different patterns. The connecting body 210, after being adjusted by the drive member 300, is fixed to the auxiliary plate 100 by the fixing member 400, so that the position of the adjusted connecting body 210 is fixed. The presser foot rod can drive the auxiliary plate 100 to move in the first direction, so that the pressing body 230 presses the fabric. Then, the needle passes through the fabric in the first direction to complete the sewing process of the subsequent patterns. This allows the same presser foot to meet the sewing needs of multiple sizes and patterns, thereby reducing the frequency of presser foot changes and improving production efficiency.

[0056] Please see Figure 4 , Figure 6 , Figure 7 and Figure 9 In one possible implementation, a long groove 211 is provided on the opposite side of the two connecting bodies 210 in the same clamping member. The length direction of the long groove 211 is parallel to the second direction. The top of the auxiliary plate 100 is provided with a protrusion 120 extending along the second direction and adapted to the long groove 211. The driving member 300 is used to drive the long groove 211 to slide relative to the protrusion 120 in the second direction. The long groove 211 penetrates the connecting body 210 along the first direction. The protrusion 120 protrudes from the upper surface of the auxiliary plate 100 along the first direction. The cooperation of the long groove 211 and the protrusion 120 can guide the relative movement of the connecting body 210 and the auxiliary plate 100, so that the two connecting bodies 210 move away and closer synchronously in the second direction. At the same time, the movement of the protrusion 120 in the third direction can be restricted by the inner wall of the long groove 211 in the third direction.

[0057] Please see Figure 10In one possible implementation, the connector 210 is further provided with a strip-shaped hole 212 extending through the connector 210 along a first direction, and the length direction of the strip-shaped hole 212 is parallel to a third direction; the driving member 300 includes a connector 310 extending along the first direction and connected to the auxiliary plate 100, and an adjusting plate 320 sleeved on the outer periphery of the connector 310 and rotatable relative to the auxiliary plate 100 about the axis of the connector 310. The adjusting plate 320 is provided with a rod 321 extending along the first direction into the corresponding strip-shaped hole 212. Two rods 321 are provided on the same adjusting plate 320, and the two rods 321 on the same adjusting plate 320 are symmetrically arranged about the axis of the connector 310. One rod 321 extends into one connector 310. The rod 321 extends into the slot 212 of the other connector 310, and the rod 321 extends into the slot 212 of the other connector 310. When the adjusting plate 320 rotates, it can drive the rod 321 to slide in the corresponding slot 212. The distance between the rod 321 and the axis of the connector 310 in the second direction changes. Through the abutment of the rod 321 against the inner wall of the slot 212, the two connectors 210 move. Through the cooperation of the long groove 211 and the protrusion 120, the relative movement of the connector 210 and the auxiliary plate 100 can be guided, so that the two connectors 210 move synchronously in the second direction, so as to move closer or further away from each other, thereby adjusting the distance between the slot 212 and the axis of the connector 310 in the second direction.

[0058] In one possible implementation, one of the connecting bodies 210 in the same clamping member is further provided with a first fixing hole 213, the length direction of the first fixing hole 213 being parallel to the second direction; the auxiliary plate 100 is provided with a second fixing hole 130 corresponding to the first fixing hole 213; the fixing member 400 includes an end 410 and a fixing rod 420, the fixing rod 420 being able to pass through the first fixing hole 213 along the first direction and then screw into and connect to the second fixing hole 130, so that the end 410 presses against the end face of the first fixing hole 213 facing the end 410, for limiting the movement of the connecting body 210 in the second direction, the fixing member 400 may be, but is not limited to, a slotted countersunk screw, wherein the end face of the first fixing hole 213 refers to the end face facing the auxiliary plate 100. Figure 6 The arc-shaped surface connected to the top surface of the medium pressure foot sleeve 200.

[0059] By fixing one of the connectors 210 in the clamping component, the connector 210 cannot move relative to the auxiliary plate 100, thereby fixing the position of the rod 321 that mates with the strip hole 212 in the connector 210, preventing the adjusting plate 320 from rotating. In other words, the position of the other rod 321 in the adjusting plate 320 is fixed, thus fixing the position of the connector 210 that mates with the other rod 321 relative to the auxiliary plate 100. That is, by fixing the position of any one connector 210 in the same clamping component with a fixing member 400, the position of the other connector 210 can be fixed.

[0060] The specific process of adjusting the relative position of the two pressure foot sleeves 200 in the same clamping component is as follows: loosen the fixing part 400 so that the connecting body 210 can move relative to the auxiliary plate 100. By rotating the adjusting plate 320 (changing the angle of the adjusting plate 320 relative to the second or third direction), the position of the rod 321 changes. The rod 321 and the slot 212 cooperate to drive the slot 212 to change position. This position change is guided by the long groove 211 and the protrusion 120, so that the two connecting bodies 210 move away from each other or move closer to each other in the second direction. After the adjustment process, tighten the fixing part 400 to fix the connecting body 210 relative to the auxiliary plate 100, thus completing the adjustment of the relative position of the two pressure foot sleeves 200 in the same clamping component.

[0061] Specifically, when the distance between the two rods 321 in the second direction increases, the distance between the two connecting bodies 210 in the second direction also increases; when the distance between the two rods 321 in the second direction decreases, the distance between the two connecting bodies 210 in the second direction also decreases.

[0062] Please see Figure 5In one possible implementation, the auxiliary plate 100 has a mounting hole 140 extending along a first direction. The mounting hole 140 is a stepped hole, which includes a first hole 141 with a larger cross-sectional dimension perpendicular to the first direction and a second hole 142 with a smaller cross-sectional dimension perpendicular to the first direction. The first hole 141 is located on the side of the second hole 142 away from the adjusting plate 320, and a shoulder is formed between the first hole 141 and the second hole 142. The connecting member 310 includes an abutment 311 and an extension rod 312 connected to the abutment 311 and extending along the first direction. The extension rod 312 passes through the second hole 142 and extends to the top of the auxiliary plate 100. An annular groove 313 is formed on the extension rod 312 above the auxiliary plate 100, and a retaining spring 330 (opening baffle) is engaged in the annular groove 313. The adjustment plate 320, located between the retaining ring 330 and the auxiliary plate 100, is used to restrict the extension rod 312 from moving away from the adjustment plate 320 in the first direction. An elastic element 340 is also provided between the adjustment plate 320 and the auxiliary plate 100. The elastic element 340 can be, but is not limited to, a spring or a spring washer. The two ends of the elastic element 340 in the first direction abut against the opposing sides of the adjustment plate 320 and the auxiliary plate 100, respectively, to drive the adjustment plate 320 away from the auxiliary plate 100. The adjustment plate 320 is blocked by the retaining ring 330 in the annular groove 313, which drives the extension rod 312 away from the auxiliary plate 100, so that the abutment 311 abuts against the shaft shoulder, making the position of the adjustment plate 320 in the first direction more stable. At the same time, the adjustment plate 320 extends to the top of the connecting body 210 to restrict the movement of the connecting body 210 in the first direction.

[0063] In one possible implementation, a presser foot 500 for connection with the clamping member is also included. The presser foot 500 includes a connecting plate 510 capable of conforming to the upper surface of the auxiliary plate 100. The connecting plate 510 has a first through hole 511 and a second through hole 512 extending along a first direction. The auxiliary plate 100 also has a first threaded hole 150 corresponding to the first through hole 511 and a second threaded hole 160 corresponding to the second through hole 512. One end of the first fastener 600 passes through the first through hole 511 and is screwed into the first threaded hole 150, and the other end of the first fastener 600 and... An elastic washer 610 is provided between the connecting plates 510. The elastic washer 610 can pre-tighten the first fastener 600. One end of the second fastener 700 passes through the second through hole 512 and is screwed into the second threaded hole 160. The other end of the second fastener 700 abuts against the side of the connecting plate 510 away from the auxiliary plate 100. The second fastener 700 enhances the stability of the connecting plate 510 and the auxiliary plate 100. The first fastener 600 can be, but is not limited to, a hexagon socket head cap screw, and the second fastener 700 can be, but is not limited to, a hexagon socket head cap set screw. The presser foot bracket 500 also includes a fixing bracket 520 connected to the connecting plate 510. The fixing bracket 520 is used to connect to the presser foot rod.

[0064] When sewing fabrics, the thickness and elasticity of the fabric have a significant impact on the sewing process. The relationship between fabric thickness and elasticity is as follows: the thicker the fabric, the less elastic it is; the thinner the fabric, the more elastic it is. When sewing thin and highly elastic fabrics, the fabric will float in the direction of the needle's movement, which greatly hinders the formation of stitches.

[0065] Please see Figure 8 In one possible implementation, the clamping body 230 is connected to the bottom of the folded edge 220, and both clamping bodies 230 in the same clamping member are bent relative to the folded edge 220 in opposite directions. The bending angle β between the clamping body 230 and the connected folded edge 220 is greater than 90°, for example 95°. The clamping body 230 can be, but is not limited to, spring steel material, so that the clamping body 230 can deform and recover relative to the folded edge 220, so that the side of the clamping body 230 away from the auxiliary plate 100 abuts against and stretches the fabric.

[0066] During use, the auxiliary plate 100 can abut against the bend of the folded edge 220 and the pressing body 230. When the auxiliary plate 100 pushes down the pressing body 230, the side of the pressing body 230 that is 95° away from the auxiliary plate 100 will be straightened by the downward force under the action of the auxiliary plate 100. In this process, the distance between the two pressing bodies 230 in the same pressing part that are opposite each other in the second direction is increased compared with the distance in the second direction when not pressed down. This movement will drive the fabric to stretch the fabric in the second direction. In this way, by utilizing the property that the spring steel material will recover after elastic deformation, elastic deformation will occur when the presser foot is pressed down. The parts that first contact the fabric at both ends will push the fabric to both sides. When the elastic fabric is in a slightly stretched state, the sewing performance will be greatly improved, thus achieving the best sewing state.

[0067] This application also provides a bartacking machine, including the presser foot as described above. The bartacking machine also has the beneficial effects of the presser foot. The bartacking machine also includes a head, on which a needle is disposed and can move up and down in a first direction. The remaining structure of the bartacking machine can be referred to the prior art, and will not be described in detail here.

[0068] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0069] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0070] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A presser foot, characterized in that, It includes two adjacent and symmetrically arranged clamping members, each of which includes: An auxiliary plate (100) includes a pin groove (110) extending along a first direction and penetrating the auxiliary plate (100), the pin groove (110) being located on one side of the two clamping members facing each other, the auxiliary plate (100) being used to connect to a presser foot rod; Two presser foot covers (200) each include a connecting body (210), a folded edge (220), and a pressing body (230) connected in sequence. The two connecting bodies (210) are movably connected to the auxiliary plate (100). The two folded edges (220) are arranged opposite to each other in a second direction and are located in the needle groove (110) and extend along the first direction. A sewing area for the needle to pass through in the first direction is formed between the two folded edges (220). The pressing body (230) is located at the bottom of the auxiliary plate (100). The presser foot rod can drive the auxiliary plate (100) to move in the first direction so that the pressing body (230) presses the fabric. A drive member (300) is connected to the two connecting bodies (210). The drive member (300) is used to drive the two connecting bodies (210) to move away and closer synchronously in the second direction, so as to adjust the distance between the two folded edges (220) in the second direction. A fastener (400) is used to fix the connector (210) after adjustment by the drive member (300) to the auxiliary plate (100); The first direction and the second direction are perpendicular to each other.

2. The presser foot according to claim 1, characterized in that, In the same clamping member, a long groove (211) is provided on one side of the two connecting bodies (210) facing away from each other, and the length direction of the long groove (211) is parallel to the second direction; The top of the auxiliary plate (100) is provided with a protrusion (120) extending along the second direction and adapted to the long groove (211). The driving member (300) is used to drive the long groove (211) to slide relative to the protrusion (120) in the second direction, so that the two connecting bodies (210) move away and closer in the second direction simultaneously.

3. The presser foot according to claim 1, characterized in that, The connector (210) is further provided with a strip hole (212) that extends through the connector (210) along the first direction, and the length direction of the strip hole (212) is parallel to the third direction, and the third direction is perpendicular to the first direction and the second direction; The driving component (300) includes a connector (310) extending along the first direction and connected to the auxiliary plate (100), and an adjusting plate (320) sleeved on the outer periphery of the connector (310) and rotatable relative to the auxiliary plate (100) about the axis of the connector (310). The adjusting plate (320) is provided with a rod (321) extending along the first direction into the corresponding slot (212). When the adjusting plate (320) rotates, it can drive the rod (321) to slide in the corresponding slot (212) to adjust the distance between the slot (212) and the axis of the connector (310) in the second direction.

4. The presser foot according to claim 3, characterized in that, The two rods (321) on the same adjustment plate (320) are symmetrically arranged about the axis of the connector (310).

5. The presser foot according to claim 1, characterized in that, One of the connecting bodies (210) in the same clamping member is also provided with a first fixing hole (213), the length direction of the first fixing hole (213) being parallel to the second direction; The auxiliary plate (100) is provided with a second fixing hole (130) corresponding to the first fixing hole (213); The fastener (400) includes an end (410) and a fixing rod (420). The fixing rod (420) can pass through the first fixing hole (213) in the first direction and then be screwed into and connected to the second fixing hole (130) so that the end (410) presses against the end face of the first fixing hole (213) facing the end (410) to limit the movement of the connector (210) in the second direction.

6. The presser foot according to claim 3, characterized in that, The auxiliary plate (100) has a mounting hole (140) with its axis extending along the first direction. The mounting hole (140) is a stepped hole, which includes a first hole (141) with a larger cross-sectional size perpendicular to the first direction and a second hole (142) with a smaller cross-sectional size perpendicular to the first direction. The first hole (141) is located on the side of the second hole (142) away from the adjustment plate (320), and a shoulder is formed between the first hole (141) and the second hole (142). The connector (310) includes an abutment (311) and an extension rod (312) connected to the abutment (311) and extending along the first direction. The extension rod (312) passes through the second hole (142) and extends above the auxiliary plate (100). An annular groove (313) is formed on the extension rod (312) above the auxiliary plate (100). A retaining ring (330) is engaged in the annular groove (313). The adjusting plate (320) located between the retaining ring (330) and the auxiliary plate (100) is used to restrict the adjusting plate (320) from disengaging from the extension rod (312). An elastic element (340) is also provided between the adjusting plate (320) and the auxiliary plate (100). The two ends of the elastic element (340) in the first direction respectively abut against the opposing sides of the adjusting plate (320) and the auxiliary plate (100) so that the abutment (311) abuts against the shoulder.

7. The presser foot according to claim 1, characterized in that, It also includes a presser foot bracket (500) for connection with the clamping member. The presser foot bracket (500) includes a connecting plate (510) that can fit against the upper surface of the auxiliary plate (100). The connecting plate (510) has a first through hole (511) and a second through hole (512) extending along the first through hole. The auxiliary plate (100) also has a first threaded hole (150) corresponding to the first through hole (511) and a second threaded hole (160) corresponding to the second through hole (512). One end of the first fastener (600) passes through the first through hole (511) and is screwed into the clamping member. An elastic washer (610) is provided in the first threaded hole (150) and between the other end of the first fastener (600) and the connecting plate (510). One end of the second fastener (700) passes through the second through hole (512) and is screwed into the second threaded hole (160). The other end of the second fastener (700) abuts against the side of the connecting plate (510) away from the auxiliary plate (100). The presser foot bracket (500) also includes a fixing bracket (520) connected to the connecting plate (510). The fixing bracket (520) is used to connect with the presser foot rod.

8. The presser foot according to any one of claims 1-7, characterized in that, The pressing body (230) is connected to the bottom of the folded edge (220), and the two pressing bodies (230) in the same pressing member are bent relative to the folded edge (220) in opposite directions. The bending angle between the pressing body (230) and the connected folded edge (220) is greater than 90°, and the pressing body (230) can deform and recover relative to the folded edge (220), so that the side of the pressing body (230) away from the auxiliary plate (100) abuts against and stretches the fabric.

9. The presser foot according to claim 8, characterized in that, The clamping body (230) is specifically made of spring steel.

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

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