A presser foot assembly and sewing apparatus

Abstract

The utility model discloses a presser foot assembly and sewing equipment, wherein the presser foot assembly comprises a presser foot body, the presser foot body is provided with a needle passing hole, the presser foot body is rotatably connected with a first cloth feeding wheel and a second cloth feeding wheel, the first cloth feeding wheel and the second cloth feeding wheel are respectively located at the upstream and downstream of the needle passing hole, the lower side of the first cloth feeding wheel and the lower side of the second cloth feeding wheel are both protruded from the lower side of the presser foot body to contact the cloth. By controlling the rotating speed of the first cloth feeding wheel, the feeding speed of the cloth located at the upper layer can be controlled, and the speed difference with the cloth located at the lower layer is formed, so as to generate the shrinkage effect, and different rotating speeds can be controlled to generate different degrees of shrinkage. In addition, the second cloth feeding wheel drags the cloth that has been sewn at the downstream position of the needle passing hole, so that according to different cloth characteristics and sewing effects, the speed cooperation of the second cloth feeding wheel and the first cloth feeding wheel can be flexibly adjusted to obtain better shrinkage effect, so as to meet different shrinkage process requirements.

Description

Technical Field

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

[0002] Gathering is a sewing technique that creates a smooth lower layer and a wrinkled upper layer by joining two layers of fabric. It is widely used in garment making. Currently, most gathering processes utilize sewing machines with differential toothing mechanisms or rely on hand sewing. However, hand sewing is inefficient, and existing differential mechanisms have fixed movements, making them prone to insufficient gathering depth or area, thus failing to meet the growing demands for different fabrics and gathering effects. Utility Model Content

[0003] The main purpose of this invention is to propose a presser foot assembly and sewing equipment, which aims to solve the technical problem that the differential structure in the prior art has a single kinetic energy and cannot meet the requirements of different shrinking processes.

[0004] To achieve the above objectives, this utility model proposes a presser foot assembly, including a presser foot body. The presser foot body has a needle hole for a sewing needle to pass through. A first feed wheel and a second feed wheel are rotatably connected to the presser foot body. The first feed wheel and the second feed wheel are located upstream and downstream of the needle hole along the fabric conveying direction, respectively. The lower sides of the first feed wheel and the second feed wheel both protrude from the lower side of the presser foot body to contact the fabric. A first transmission part for driving the first feed wheel to rotate is coaxially fixed on the first feed wheel, and a second transmission part for driving the second feed wheel to rotate is coaxially fixed on the second feed wheel.

[0005] The presser foot body is equipped with a first feed roller and a second feed roller on both sides of the needle hole. The first feed roller can be driven to rotate through the first transmission part, and the second feed roller can be driven to rotate through the second transmission part. During processing, the fabric to be sewn first passes under the first feed roller, then passes under the needle hole for sewing, and the sewn fabric then passes under the second feed roller.

[0006] By controlling the rotation speed of the first feed roller, the feeding speed of the upper layer of fabric can be controlled, creating a speed difference with the lower layer, thereby producing a wrinkling effect. Different rotation speeds can be controlled to produce different degrees of wrinkling. Additionally, the second feed roller drags the already sewn fabric downstream of the needle hole. By controlling the rotation speed of the second feed roller, the fabric output speed can be adjusted to influence the fabric. This allows for flexible adjustment of the speed coordination between the first and second feed rollers according to different fabric characteristics and sewing effects, achieving better wrinkling results and reducing fabric twisting, thus meeting various wrinkling process requirements.

[0007] Preferably, the presser foot body is provided with a first clearance groove and a second clearance groove. The first feed wheel is disposed in the first clearance groove, and its axial sides are rotatably connected to the two sides of the first clearance groove. The second feed wheel is disposed in the second clearance groove, and its axial sides are rotatably connected to the two sides of the second clearance groove. The connection between the two sides of the first feed wheel and the two sides of the second feed wheel and the presser foot body can improve the structural strength of the first feed wheel and the second feed wheel.

[0008] Preferably, the surfaces of the first feed wheel and the second feed wheel are provided with a toothed structure or a knurled structure.

[0009] In another aspect, this utility model also proposes a sewing device having the above-mentioned presser foot assembly. The sewing device further includes a sewing device body and a lower fabric feeding assembly disposed on the sewing device body. The sewing device body includes a sewing head, the presser foot assembly is disposed on the lower side of the sewing head and the upper side of the lower fabric feeding assembly, and a sewing needle is disposed on the lower side of the sewing head, the sewing needle being directly opposite the needle hole. The sewing device further includes a fabric wheel drive device, the fabric wheel drive device including a first drive motor and a second drive motor, both the first drive motor and the second drive motor being fixedly connected to the sewing device body, the first drive motor being drivenly connected to the first transmission part, and the second drive motor being drivenly connected to the second transmission part.

[0010] By using the presser foot assembly described above, the first drive motor drives the first feed roller to rotate, and the second drive motor drives the second feed roller to rotate. This allows for control and adjustment of the rotation speeds of the first and second feed rollers, resulting in different pleating and sewing effects to meet various pleating process requirements.

[0011] Preferably, a first master synchronous pulley is fixedly connected to the output shaft of the first drive motor, a first slave synchronous pulley is fixedly provided on the first transmission part, and a first synchronous belt is wound around the first master synchronous pulley and the first slave synchronous pulley; a second master synchronous pulley is fixedly connected to the output shaft of the second drive motor, a second slave synchronous pulley is fixedly provided on the second transmission part, and a second synchronous belt is wound around the second master synchronous pulley and the second slave synchronous pulley.

[0012] The first drive motor drives the first main synchronous pulley to rotate, which in turn drives the first driven synchronous pulley and the first feed roller to rotate via the first synchronous belt; the second drive motor drives the second main synchronous pulley to rotate, which in turn drives the second driven synchronous pulley and the second feed roller to rotate via the second synchronous belt. Using both the first and second synchronous belts better accommodates the vertical movement of the presser foot assembly.

[0013] Preferably, the cloth wheel drive device further includes a mounting plate, which is fixedly connected to the machine head. The first drive motor and the second drive motor are both fixedly connected to the mounting plate. A tensioning plate is rotatably connected to the mounting plate. The tensioning plate is provided with a first tensioning wheel and a second tensioning wheel. The first tensioning wheel abuts against the first synchronous belt, and the second tensioning wheel abuts against the second synchronous belt. The cloth wheel drive device further includes a tensioning spring. The two ends of the tensioning spring are respectively connected to the mounting plate and the tensioning plate. The tensioning spring can apply elastic force to the tensioning plate to make the first tensioning wheel press against the tensioning first synchronous belt and to make the second tensioning wheel press against the tensioning second synchronous belt.

[0014] The tension spring applies elastic force to the tension plate, causing the first tension wheel to press against the first synchronous belt to maintain tension, and the second tension wheel to press against the second synchronous belt to maintain tension, so as to maintain the drive of the first drive motor to the first feed wheel and the drive of the second drive motor to the second feed wheel, and the presser foot assembly also remains tensioned and will not disengage when moving up and down.

[0015] Preferably, the first main synchronizing pulley and the second main synchronizing pulley are located on one side downstream of the machine head, and are located above the first feed pulley and the second feed pulley. The second main synchronizing pulley is located on one side downstream of the first main synchronizing pulley. The presser foot body is also provided with a first guide shaft and a second guide shaft. The first guide shaft is located on one side downstream of the first driven synchronizing pulley and abuts against the first synchronous belt. The first guide shaft can cause the first synchronous belt to turn away from the machine head. The second guide shaft is located on one side downstream of the second driven synchronizing pulley and abuts against the second synchronous belt. The second guide shaft can cause the second synchronous belt to turn away from the first synchronous belt.

[0016] The first and second main synchronous pulleys are located on one side downstream of the machine head to avoid obstructing the operator's space and line of sight on the upstream side. A first guide shaft and a second guide shaft are provided on the pressure foot body. The first guide shaft allows the first synchronous belt to bend away from the machine head, and the second guide shaft allows the second synchronous belt to bend away from the first synchronous belt, thus preventing mutual interference.

[0017] Preferably, the sewing equipment further includes a speed detection element, which is matched with the lower fabric feeding assembly. The speed detection element is used to detect the fabric feeding speed of the lower fabric feeding assembly, and both the first drive motor and the second drive motor are signal connected to the speed detection element.

[0018] Preferably, the sewing equipment further includes a first speed regulator and a second speed regulator. The first speed regulator is electrically connected to the first drive motor and can adjust the rotational speed of the first drive motor. The second speed regulator is electrically connected to the second drive motor and can adjust the rotational speed of the second drive motor.

[0019] The speeds of the first and second drive motors can be adjusted by the first and second speed regulators respectively, allowing operators to make adjustments based on the sewing effect. Attached Figure Description

[0020] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the presser foot assembly of this utility model;

[0022] Figure 2 This is a structural schematic diagram of the presser foot assembly of this utility model from another angle;

[0023] Figure 3 This is a schematic diagram of the sewing equipment of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the cloth wheel drive device and the presser foot assembly of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the cloth wheel drive device of this utility model;

[0026] Figure 6 This is a schematic diagram of the presser foot assembly and the lower fabric feeding assembly of this utility model during fabric feeding.

[0027] In the attached diagram: 1-presser foot assembly, 11-presser foot body, 12-needle hole, 13-first feed roller, 14-second feed roller, 15-connecting hole, 2-sewing equipment body, 21-sewing head, 22-sewing needle, 3-lower feed assembly, 31-feed dog, 4-feed roller drive device, 5-first drive motor, 51-first main synchronous pulley, 52-first driven synchronous pulley, 53-first synchronous belt, 54-first guide shaft, 6-second drive motor, 61-second main synchronous pulley, 62-second driven synchronous pulley, 63-second synchronous belt, 64-second guide shaft, 71-mounting plate, 72-tensioning plate, 73-first tensioning roller, 74-second tensioning roller, 75-tensioning spring.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators, such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] like Figure 1 and Figure 2As shown, a presser foot assembly 1 includes a presser foot body 11, with a needle hole 12 for a sewing needle 22 to pass through. A first feed roller 13 and a second feed roller 14 are rotatably connected to the presser foot body 11. The first feed roller 13 and the second feed roller 14 are located upstream and downstream of the needle hole 12 along the fabric conveying direction, respectively. The lower side of the first feed roller 13 and the lower side of the second feed roller 14 both protrude from the lower side of the presser foot body 11 to contact the fabric. A first transmission part for driving the first feed roller 13 to rotate is coaxially fixed on the first feed roller 13, and a second transmission part for driving the second feed roller 14 to rotate is coaxially fixed on the second feed roller 14.

[0033] The presser foot body 11 is provided with a first feed roller 13 and a second feed roller 14 on both sides of the needle hole 12. The first feed roller 13 can be driven to rotate through the first transmission part, and the second feed roller 14 can be driven to rotate through the second transmission part. During processing, the fabric to be sewn first passes under the first feed roller 13, then passes under the needle hole 12 for sewing, and the sewn fabric then passes under the second feed roller 14.

[0034] By controlling the rotation speed of the first feed roller 13, the feeding speed of the upper layer of fabric can be controlled, creating a speed difference with the lower layer. When the feed amount of the upper layer fabric is greater than that of the lower layer fabric, the upper layer fabric will form wrinkles and be sewn together with the lower layer fabric by the sewing needle 22, thus producing a shrinkage effect. Different rotation speeds can be controlled to produce different degrees of shrinkage. Alternatively, the rotation speed of the first feed roller 13 can be controlled so that the feeding speed of the upper layer fabric is the same as that of the lower layer fabric, thus allowing for the sewing of a smooth fabric without a shrinkage effect.

[0035] In addition, the second feed roller 14 drags the sewn fabric downstream of the needle hole 12. By controlling the rotation speed of the second feed roller 14, the fabric output speed can be adjusted to influence the fabric. Because different fabrics have different softness, the shrinkage effect produced during fabric feeding or sewing between different fabrics varies, and wavy twists may form after sewing. This solution allows for flexible adjustment of the speed coordination between the second feed roller 14 and the first feed roller 13 according to different fabric materials and sewing effects to achieve better shrinkage effects and reduce fabric twisting, thus meeting the needs of different shrinkage processes.

[0036] In some specific embodiments, the presser foot body 11 is provided with a first clearance groove and a second clearance groove. A first feed wheel 13 is disposed in the first clearance groove, and its axial sides are rotatably connected to the two sides of the first clearance groove. A second feed wheel 14 is disposed in the second clearance groove, and its axial sides are rotatably connected to the two sides of the second clearance groove. A first transmission part is located outside the first clearance groove, and a second transmission part is located outside the second clearance groove. The two sides of the first feed wheel 13 and the two sides of the second feed wheel 14 are connected to the presser foot body 11, which can improve the structural strength of the first feed wheel 13 and the second feed wheel 14.

[0037] In some specific embodiments, the surfaces of the first feed roller 13 and the second feed roller 14 are provided with toothed or knurled structures. This increases the friction between the first feed roller 13 and the second feed roller 14 and the fabric, ensuring a good pushing effect. Depending on the fabric material, toothed or knurled structures can be selected, as well as the size of the teeth or the roughness of the knurling can be set to avoid damaging the fabric surface.

[0038] On the other hand, refer to Figures 1 to 6 A sewing machine having the presser foot assembly 1 described above, the sewing machine further includes a sewing machine body 2 and a lower feed assembly 3 disposed on the sewing machine body 2. The lower feed assembly 3 has a conventional structure and includes feed dogs 31, which can reciprocate to push the fabric located in the lower layer. The sewing machine body 2 includes a sewing head 21, the presser foot assembly 1 is disposed on the lower side of the sewing head 21 and the upper side of the lower feed assembly 3. A sewing needle 22 is disposed on the lower side of the sewing head 21. The sewing needle 22 has a conventional structure, and the movement of the sewing needle 22 is linked to the movement of the feed dogs 31. The sewing needle 22 is directly opposite the needle hole 12. A presser foot bar is also disposed on the lower side of the sewing head 21. The presser foot bar has a conventional structure, and a connecting hole 15 is provided on the presser foot body 11. The presser foot assembly 1 is fixed to the presser foot bar through the connecting hole 15.

[0039] The sewing equipment also includes a fabric wheel drive device 4, which includes a first drive motor 5 and a second drive motor 6. Both the first drive motor 5 and the second drive motor 6 are fixedly connected to the main body 2 of the sewing equipment. The first drive motor 5 is connected to the first transmission part, and the second drive motor 6 is connected to the second transmission part.

[0040] During sewing, the presser foot assembly 1 presses down on the fabric, and the lower feed assembly 3 and the sewing needle 22 feed the fabric in conjunction. Simultaneously, the first drive motor 5 drives the first feed roller 13 to rotate, and the second drive motor 6 drives the second feed roller 14 to rotate. By controlling and adjusting the rotation speeds of the first feed roller 13 and the second feed roller 14, different pleating effects can be achieved to meet various pleating process requirements. The sewing equipment can be an overlock sewing machine, a coverstitch sewing machine, a single-needle flatbed sewing machine, a multi-needle sewing machine, or a double-needle flatbed sewing machine, etc.

[0041] In some specific embodiments, reference is made to Figures 3 to 5 A first master synchronous pulley 51 is fixedly connected to the output shaft of the first drive motor 5, and a first slave synchronous pulley 52 is fixedly provided on the first transmission part. A first synchronous belt 53 is wound around the first master synchronous pulley 51 and the first slave synchronous pulley 52. ​​A second master synchronous pulley 61 is fixedly connected to the output shaft of the second drive motor 6, and a second slave synchronous pulley 62 is fixedly provided on the second transmission part. A second synchronous belt 63 is wound around the second master synchronous pulley 61 and the second slave synchronous pulley 62.

[0042] The first drive motor 5 drives the first main synchronous pulley 51 to rotate, which in turn drives the first driven synchronous pulley 52 and the first feed roller 13 to rotate via the first synchronous belt 53; the second drive motor 6 drives the second main synchronous pulley 61 to rotate, which in turn drives the second driven synchronous pulley 62 and the second feed roller 14 to rotate via the second synchronous belt 63. The use of the first synchronous belt 53 and the second synchronous belt 63 can better accommodate the up and down movement of the presser foot assembly 1.

[0043] Furthermore, the cloth wheel drive device 4 also includes a mounting plate 71, which is fixedly connected to the machine head 21. The first drive motor 5 and the second drive motor 6 are both fixedly connected to the mounting plate 71. A tensioning plate 72 is rotatably connected to the mounting plate 71. The tensioning plate 72 is provided with a first tensioning wheel 73 and a second tensioning wheel 74. The first tensioning wheel 73 abuts against the first synchronous belt 53, and the second tensioning wheel 74 abuts against the second synchronous belt 63. The cloth wheel drive device 4 also includes a tensioning spring 75. The two ends of the tensioning spring 75 are respectively connected to the mounting plate 71 and the tensioning plate 72. The tensioning spring 75 can apply elastic force to the tensioning plate 72 to make the first tensioning wheel 73 press against the tensioning first synchronous belt 53 and to make the second tensioning wheel 74 press against the tensioning second synchronous belt 63.

[0044] The tension spring 75 applies elastic force to the tension plate 72, causing the first tension wheel 73 to press against the first synchronous belt 53 to maintain tension, and the second tension wheel 74 to press against the second synchronous belt 63 to maintain tension, so as to maintain the drive of the first drive motor 5 to the first feed wheel 13 and the drive of the second drive motor 6 to the second feed wheel 14, and the presser foot assembly 1 also remains tensioned and will not disengage when moving up and down.

[0045] Furthermore, the first main synchronous pulley 51 and the second main synchronous pulley 61 are located on one side downstream of the machine head 21. The first main synchronous pulley 51 and the second main synchronous pulley 61 are located above the first feed roller 13 and the second feed roller 14. The second main synchronous pulley 61 is located on one side downstream of the first main synchronous pulley 51. The presser foot body 11 is also provided with a first guide shaft 54 ​​and a second guide shaft 64. The first guide shaft 54 ​​is located on one side downstream of the first driven synchronous pulley 52. ​​The first guide shaft 54 ​​abuts against the first synchronous belt 53. The first guide shaft 54 ​​can cause the first synchronous belt 53 to turn away from the machine head 21. The second guide shaft 64 is located on one side downstream of the second driven synchronous pulley 62. The second guide shaft 64 abuts against the second synchronous belt 63. The second guide shaft 64 can cause the second synchronous belt 63 to turn away from the first synchronous belt 53.

[0046] The first main synchronizing pulley 51 and the second main synchronizing pulley 61 are located on one side downstream of the machine head 21 to avoid obstructing the operator's space and line of sight on the upstream side. The presser foot body 11 is provided with a first guide shaft 54 ​​and a second guide shaft 64. The first guide shaft 54 ​​can cause the first synchronous belt 53 to turn away from the machine head 21, and the second guide shaft 64 can cause the second synchronous belt 63 to turn away from the first synchronous belt 53 to avoid mutual interference.

[0047] In some specific embodiments, the sewing equipment also includes a speed detection element, which is matched with the lower feed assembly 3. The speed detection element is used to detect the feed speed of the lower feed assembly 3. The first drive motor 5 and the second drive motor 6 are both signal connected to the speed detection element.

[0048] Since the feed dog 31 and the sewing needle 22 are linked, the speed detection element can be an encoder, which is connected to the motor that drives the feed dog 31 and the sewing needle 22. The speed detection element detects the feed speed of the lower feed assembly 3, which is the overall sewing speed. The first drive motor 5 and the second drive motor 6 adapt to the detected speed and change their speed accordingly to achieve the desired wrinkling effect.

[0049] In some specific embodiments, the sewing equipment further includes a first speed regulator and a second speed regulator. The first speed regulator is electrically connected to the first drive motor 5 and can adjust the rotational speed of the first drive motor 5. The second speed regulator is electrically connected to the second drive motor 6 and can adjust the rotational speed of the second drive motor 6.

[0050] The speeds of the first drive motor 5 and the second drive motor 6 can be adjusted by the first and second speed regulators, respectively, allowing operators to easily adjust them according to the actual sewing effect. The first and second speed regulators can be physical buttons or knobs, or they can be adjusted using a touchscreen.

[0051] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A presser foot assembly, characterized in that, The device includes a presser foot body (11), which has a needle hole (12) for a sewing needle (22) to pass through. A first feed roller (13) and a second feed roller (14) are rotatably connected to the presser foot body (11). The first feed roller (13) and the second feed roller (14) are located upstream and downstream of the needle hole (12) along the fabric conveying direction, respectively. The lower side of the first feed roller (13) and the lower side of the second feed roller (14) both protrude from the lower side of the presser foot body (11) to contact the fabric. A first transmission part for driving the first feed roller (13) to rotate is coaxially fixed on the first feed roller (13), and a second transmission part for driving the second feed roller (14) to rotate is coaxially fixed on the second feed roller (14).

2. The presser foot assembly as described in claim 1, characterized in that, The presser foot body (11) is provided with a first clearance groove and a second clearance groove. The first feed roller (13) is located in the first clearance groove. The axial sides of the first feed roller (13) are rotatably connected to the two sides of the first clearance groove. The second feed roller (14) is located in the second clearance groove. The axial sides of the second feed roller (14) are rotatably connected to the two sides of the second clearance groove.

3. The presser foot assembly as described in claim 1, characterized in that, The surfaces of the first feed roller (13) and the second feed roller (14) are provided with toothed or knurled structures.

4. A sewing machine, characterized in that, The sewing equipment includes a presser foot assembly (1) as described in any one of claims 1 to 3, and further includes a sewing equipment body (2) and a lower fabric feeding assembly (3) disposed on the sewing equipment body (2). The sewing equipment body (2) includes a machine head (21). The presser foot assembly (1) is disposed on the lower side of the machine head (21) and the upper side of the lower fabric feeding assembly (3). A sewing needle (22) is provided on the lower side of the machine head (21). The sewing needle (22) is directly opposite the needle hole (12). The sewing equipment also includes a fabric wheel drive device (4). The fabric wheel drive device (4) includes a first drive motor (5) and a second drive motor (6). The first drive motor (5) and the second drive motor (6) are both fixedly connected to the sewing equipment body (2). The first drive motor (5) is connected to the first transmission part, and the second drive motor (6) is connected to the second transmission part.

5. The sewing equipment as described in claim 4, characterized in that, A first main synchronous pulley (51) is fixedly connected to the output shaft of the first drive motor (5), and a first slave synchronous pulley (52) is fixedly provided on the first transmission part. A first synchronous belt (53) is wound around the first main synchronous pulley (51) and the first slave synchronous pulley (52). A second main synchronous pulley (61) is fixedly connected to the output shaft of the second drive motor (6), and a second slave synchronous pulley (62) is fixedly provided on the second transmission part. A second synchronous belt (63) is wound around the second main synchronous pulley (61) and the second slave synchronous pulley (62).

6. The sewing equipment as described in claim 5, characterized in that, The cloth wheel drive device (4) also includes a mounting plate (71), which is fixedly connected to the machine head (21). The first drive motor (5) and the second drive motor (6) are both fixedly connected to the mounting plate (71). A tensioning plate (72) is rotatably connected to the mounting plate (71). The tensioning plate (72) is provided with a first tensioning wheel (73) and a second tensioning wheel (74). The first tensioning wheel (73) abuts against the first synchronous belt (53), and the second tensioning wheel (74) abuts against the second synchronous belt (63). The cloth wheel drive device (4) also includes a tensioning spring (75). The two ends of the tensioning spring (75) are respectively connected to the mounting plate (71) and the tensioning plate (72). The tensioning spring (75) can apply elastic force to the tensioning plate (72) to make the first tensioning wheel (73) press against the tensioning first synchronous belt (53) and make the second tensioning wheel (74) press against the tensioning second synchronous belt (63).

7. The sewing equipment as described in claim 6, characterized in that, The first main synchronizing pulley (51) and the second main synchronizing pulley (61) are located on one side of the machine head (21) in the downstream direction. The first main synchronizing pulley (51) and the second main synchronizing pulley (61) are located on the upper side of the first feed roller (13) and the second feed roller (14). The second main synchronizing pulley (61) is located on one side of the first main synchronizing pulley (51) in the downstream direction. The presser foot body (11) is also provided with a first guide shaft (54) and a second guide shaft (64). The first guide shaft (54) is located on one side downstream of the first synchronous pulley (52). The first guide shaft (54) abuts against the first synchronous belt (53). The first guide shaft (54) can cause the first synchronous belt (53) to turn away from the machine head (21). The second guide shaft (64) is located on one side downstream of the second synchronous pulley (62). The second guide shaft (64) abuts against the second synchronous belt (63). The second guide shaft (64) can cause the second synchronous belt (63) to turn away from the first synchronous belt (53).

8. The sewing equipment as described in claim 4, characterized in that, The sewing equipment also includes a speed detection element, which is matched with the lower feed assembly (3). The speed detection element is used to detect the feed speed of the lower feed assembly (3). The first drive motor (5) and the second drive motor (6) are both signal connected to the speed detection element.

9. The sewing equipment as described in claim 4, characterized in that, The sewing equipment also includes a first speed regulator and a second speed regulator. The first speed regulator is electrically connected to the first drive motor (5) and can adjust the rotational speed of the first drive motor (5). The second speed regulator is electrically connected to the second drive motor (6) and can adjust the rotational speed of the second drive motor (6).

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